Abstract

The present invention relates to an automatic addressing method and system, and a computer-readable medium. The method includes: a configuration information querying step: each slave sends its own configuration information to a master based on a delayed reply time parameter and a current communication address, where the configuration information includes a slave serial number and an addressing record number; an addressing screening step: the master determines whether there is a conflict between the respective current communication addresses of the slaves, obtains a slave whose communication address needs to be updated through screening based on a preset addressing algorithm and the addressing record numbers if it is determined that there is a conflict, and generates an addressing slave list; a new address setting step: the master sends a new address setting command to the corresponding slave based on the addressing slave list; and the slave updates the current communication address; and an addressing confirming step: the master sends an addressing record number of this batch to each slave; and each slave uses the addressing record number of this batch as a latest addressing record number. The present invention can improve the addressing efficiency of sensors. (Fig. 1)

IPC Classes  ?

• H04L 61/5038 - Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
• H04L 61/5046 - Resolving address allocation conflictsTesting of addresses

Abstract

A hydraulic system micro-adjustment device and a tank calibration system including same are disclosed. The device includes a base, a piston, valve body, valve core, and handle. The valve body includes an inner cavity for receiving the valve core from an upper portion of the valve body, the valve core being in threaded connection with the inner cavity. The piston is inserted into the inner cavity from a lower portion of the valve body and abuts the valve core. The lower portion of the valve body is mounted in the base and is in communication with oil passages therein. The handle is connected to a top of the valve core, which is movable along the inner cavity upon rotation of the handle thereby pushing the piston along the inner cavity so as to change the volume of a cavity formed by the base, the valve body, and the piston.

IPC Classes  ?

• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F16K 1/36 - Valve members
• F16K 31/60 - Handles

Abstract

A method for determining the reliability of a weighing result, a computer-readable medium, and a related system are disclosed. The method for determining the reliability of a weighing result includes: using an AI classification algorithm trained by data including event data related to a weight system and weighing data obtained by a sensor thereof, and making an inference about a weighing result, including providing latest data obtained by the same weighting system or a weigh system of a same kind to the AI classification algorithm, including latest event data and latest weighing data representing the weighing result. The method, the computer-readable medium, and the system disclosed herewith determine whether a weighing system is operating normally and whether displayed data is reliable.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/44 - Coding devices therefor

Abstract

The present application provides a weighing method and system for a dynamic forklift scale. The weighing method includes: calculating a tilt angle of an acceleration sensor relative to a traveling direction of a forklift; determining whether a data drift occurs in axis data of the acceleration sensor on a traveling direction axis based on the axis data; obtaining a data drift trend when the data drift occurs; and when the forklift enters a constant speed phase, enabling fine filtering, and starting a data drift compensation algorithm at the same time to process a weighing signal, to obtain the compensated weighing signal, where the fine filtering is to remove dynamic noise, and the data drift compensation algorithm includes calculating the compensated weighing signal based on the tilt angle, the data drift trend, and the weighing signal. The present application facilitates obtaining a high-accuracy weighing result of the high-speed dynamic forklift scale.

IPC Classes  ?

• G01G 19/08 - Weighing apparatus or methods adapted for special purposes not provided for in groups for incorporation in vehicles
• G01G 23/00 - Auxiliary devices for weighing apparatus
• G01G 23/10 - Means for damping oscillations, e.g. of weigh-beams by electric or magnetic means

Abstract

The present application provides a weighing method and system for a dynamic forklift scale. The weighing method includes: obtaining weighing data and acceleration data of a forklift during operation; determining a motion state of the forklift based on the weighing data, the motion state including a static state and a dynamic state; determining, based on first data of the acceleration data in a traveling direction of the forklift, whether the forklift is in a constant speed operation phase or a constant acceleration operation phase; obtaining a vibration frequency of the forklift during operation based on second data of the acceleration data in a vertical direction; and when it is determined that the forklift is in the dynamic state and is in the constant speed operation phase or the constant acceleration operation phase, setting a cut-off frequency of a second-stage filter based on the second data, and processing the weighing data using the second-stage filter, to obtain processed data. According to the present application, a high-accuracy weighing result in the dynamic state can be obtained.

IPC Classes  ?

• G01G 19/08 - Weighing apparatus or methods adapted for special purposes not provided for in groups for incorporation in vehicles

Abstract

The present invention provides an overload protection device for an electromagnetic weighing module and a weighing module. The overload protection device comprises: at least two oppositely arranged resilient support assemblies, which are mounted on an upper end face of the weighing module, respectively, on either side of a pan; an overload protection plate provided with a through hole through which the pan passes, the overload protection plate being located above the resilient support assemblies; and at least two positioning assemblies fixed on the upper end face of the weighing module, respectively outside two lateral ends of the overload protection plate; an upper end of each of the positioning assemblies being provided with a position-adjustable limiting plate. In the present invention, the overload protection function is implemented by adding an overload protection accessory to the outside of the weighing module without affecting the performance of the weighing module, meeting the customer's applications in various situations, and reducing the customer's loss due to human-caused damage to the module.

IPC Classes  ?

• G01G 7/04 - Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups by electromagnetic action with means for regulating the current to solenoids
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

The present application provides a method and system for determining a repeatability anomaly of a measuring instrument, and a computer-readable medium. The method for determining the repeatability anomaly includes: obtaining a plurality of real-time images and/or real-time measurement data of the measuring instrument in operation; determining at least one repeated action of the measuring instrument based on the plurality of real-time images and/or the real-time measurement data, analysing the measurement data associated with the repeated action and obtaining a plurality of valid measurement data pieces corresponding to the repeated actions, and calculating a repeatability error based on the plurality of valid measurement data pieces, and if the repeatability error exceeds a preset threshold, then determining that the measuring instrument has a repeatability anomaly. According to the present application, without disturbing the daily operation of the measuring instrument, the repeatability anomaly of the measuring instrument can be detected in time, and it can be determined whether the measuring instrument needs to be verified and delivered to be inspected is determined, so as to improve the efficiency of verifying the measuring instrument.

IPC Classes  ?

• G01M 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

The present application provides a raw material mixing control method and system based on multi-agent reinforcement learning, and a computer-readable medium. The raw material mixing control method includes: constructing a multi-agent reinforcement learning model with each material tank as an independent agent, where model parameters of the multi-agent reinforcement learning model include a state, an action, and a reward, with the state including an actual weight of each material tank, the action including adjusting a feeding speed of a single material tank, and the reward involving giving a positive reward if a mixing proportion reaches a target proportion; training the multi-agent reinforcement learning model to obtain a trained model; obtaining a current state of each of n material tanks in a raw material mixing apparatus, inputting the current state into the trained model, and outputting, by the trained model, a target action corresponding to the current state of each of the material tanks; and controlling an action of each of the material tanks to be the target action.

IPC Classes  ?

• G06N 7/01 - Probabilistic graphical models, e.g. probabilistic networks
• G06N 3/045 - Combinations of networks
• G06N 3/092 - Reinforcement learning

Abstract

The present disclosures relate generally to a tilt compensation apparatus and a tilt compensation method therefor. The tilt compensation method includes: S1: performing tilt angle calibration and horizontal rotation angle calibration on a weighing system; S2: selecting to set different specified tilt angles and different specified horizontal rotation angles, and measuring weights, tilt angles, and horizontal rotation angles under different loads; S3: calculating a weight compensation value based on the set specified tilt angles and the set specified horizontal rotation angles as well as the weights, tilt angles, and horizontal rotation angles obtained through measurement; and S4: calculating an actual weighing weight based on an actual measured weight of the weighing system and the weight compensation value. These disclosures provide more, accurate tilt compensation for weighing systems having a column-type load cell.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 19/02 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing wheeled or rolling bodies, e.g. vehicles

Abstract

A U-shaped plate for a weighing module and a weighing module having the same are disclosed. The U-shaped plate includes an upper end surface connecting a first and second side surface, each including a bottom end and an upper portion together forming four corners of the U-shaped plate and providing an inverted U-shaped structure formed by bending a flat and straight metal sheet. A lower width of the U-shaped plate is greater than an upper width thereof. The U-shaped plate includes an opening for mounting a sensor which extends from the bottom end of the first side surface to the upper portion of the second side surface via the upper end surface. Each of the four corners provide a recessed structure. When used with a weighing module, the U-shaped plate matches the sensor. An integrated molding design overcomes defects and, realizes safety and practicability.

IPC Classes  ?

• G01G 21/28 - FramesHousings

Abstract

The present invention provides a system (100) and a method for controlling a verification process of a measuring device (10) based on low-code technology. The system (100) includes a remote verification system cloud service (40), a verification process creation tool (30), an access point (20) for a verification competent authority to the verification process creation tool (30), and an access point for verification personnel to the remote verification system cloud service (40), wherein access to the remote verification system cloud service (40) is given by at least one of the measuring device (10) and a verification personnel terminal device (50). The remote verification system cloud service (40) is connectable to the verification process providing tool (30). The method comprises at least one of a step of providing said system (100) and a step of using said system (100). In embodiments, the method comprises a step S1 of creating a verification flowchart (80, A1, B1, A2, B2) and a step S2 of implementing at least one verification task represented by the verification flowchart. The present invention employs a graphical and visual verification process creation tool to address the challenges posed by the wide variety of types of measuring devices and the complexity and variability of verification processes. Additionally, the present invention significantly simplifies the operations of verification personnel, reduces the requirements for skills and experience of the verification personnel, and improves the objectivity and fairness of verification results.

IPC Classes  ?

• G06F 21/44 - Program or device authentication
• G06F 11/22 - Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
• G06F 11/30 - Monitoring
• G06F 21/57 - Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
• G06F 21/73 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by creating or determining hardware identification, e.g. serial numbers
• H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

A volume measurement method and apparatus using a depth camera, and a computer-readable medium, are provided. A first depth image of a reference countertop is acquired which includes coordinate and depth data of pixels, the reference countertop adapted for placement of a measured object. The coordinate and depth data are substituted into countertop empirical equations to obtain simulated images. Each of the countertop empirical equations represent a height variation pattern of the reference countertop. A correlation between each of the simulated images and the first depth image is calculated. A simulated image with the highest correlation is used as a target image of the reference countertop. A countertop height of the reference countertop is obtained based on the target image, a height of the measured object is calculated using the countertop height, and a volume of the measured object is calculated using the height. These disclosures improve accuracy of object volume measurement.

IPC Classes  ?

• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume
• G01F 17/00 - Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies

Abstract

The present invention provides a hinged foldable rod and a commercial weighing instrument comprising same. The hinged foldable rod comprises a first rod (10), a upright rod (20), an cover (30) and a hinge assembly (40). A first end portion (31) of the cover is connected to a first end portion (11) of the first rod. The cover may be sleeved on the hinge assembly. A first end portion (42, 43) of the hinge assembly is connected to the first end portion of the first rod, and a second end portion (45, 46) of the hinge assembly is connected to a first end portion (21) of the second rod. For example when the hinged foldable rod needs to be stored, the first rod can be rotated with respect to the second rod by means of the hinge assembly, wherein the hinge assembly is configured to exert a torque on the first rod, this torque being caused by friction.

IPC Classes  ?

• G01G 23/18 - Indicating devices, e.g. for remote indicationRecording devicesScales, e.g. graduated
• F16M 11/10 - Means for attachment of apparatusMeans allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only

Abstract

A metrological instrument digital verification method, i.e., a computer-implemented verification method for a metrological instrument 110, and a related system are provided. In the method, verification personnel 131 provide, through the metrological instrument 110 and/or a detection client 130, identity information to a metrological management organization 120. After a verification request is accepted, the metrological instrument 110 and/or the detection client 130 are/is used to display a verification step to the verification personnel 131, and record/records a real-time image when the verification personnel perform a test. Verification information is transmitted to the metrological management organization. The management platform obtains the verification information, and generates a digital verification certificate 40 if the verification information meets a verification requirement. The digital verification certificate includes built-in component information of the metrological instrument 110. According to the foregoing method and system, compliance and accuracy of a metrological verification process can be improved. The digital verification certificate is bound to a built-in component, in particular a built-in core component, of the metrological instrument, so that a certification range of the digital verification certificate is enlarged.

IPC Classes  ?

• G06F 21/44 - Program or device authentication
• G06F 21/57 - Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
• G06F 21/73 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by creating or determining hardware identification, e.g. serial numbers
• H04L 9/40 - Network security protocols

Abstract

These disclosures provide a filtering method and control apparatus for a load cell. The method includes: filtering, by using a plurality of filtering units, first weighing data obtained by the load cell to obtain a plurality of pieces of second weighing data, where the filtering units have different settling times. Obtaining a fluctuation index of each piece of second weighing data, and establishing a correspondence between a fluctuation index and a settling time of each filtering unit. Determining a target filtering unit based on the correspondence according to a weighing requirement, where a fluctuation index of the target filtering unit matches a target precision in the weighing requirement, and a settling time of the target filtering unit matches a target speed in the weighing requirement. The method and apparatus disclosed improves speed and user experience in a weighing process.

IPC Classes  ?

• G01G 23/10 - Means for damping oscillations, e.g. of weigh-beams by electric or magnetic means

Abstract

Provided is a weighing module for weighing a weighed part, the weighing module comprising a housing, a force transmission assembly and a bush ring, wherein the housing defines an accommodating space; the force transmission assembly is disposed in the accommodating space and comprises a force transmission connector with a spherical surface and a load cell, the spherical surface being configured to be in contact with the weighed part to reduce the friction force during movement of the weighed part; and the bush ring is disposed between the housing and the force transmission connector, and the bushing ring is made of a hard material to reduce the offset of the force transmission connector to avoid contact between the force transmission connector and the housing. The weighing module can allow deformation and slip of the weighed part and ensure the weighing accuracy.

IPC Classes  ?

• G01G 21/23 - Support or suspension of weighing platforms

Abstract

An integrated high-precision weighing module is provided which includes a scale pan, a lever, an internal calibration system, a bottom plate assembly, and a sensor main body. The scale pan is mounted on the lever, and the lever is connected to the sensor main body. The internal calibration system, the sensor main body and the lever are arranged transversely, and the internal calibration system and the sensor main body are respectively attached to the bottom plate assembly.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 7/02 - Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups by electromagnetic action

Abstract

These disclosures relate to a method for detecting and removing personnel interference while measuring volume of an object. An image of an object is obtained, a background information of the image is removed, and the image is converted into a binary image. An outline of the object is detected from the binary image. A determination is made whether the outline extends towards a boundary of the field of view. If the outline of the object does not extend to the boundary of the field of view, the volume of the object is measured. Otherwise, an extending part is removed from the outline using a morphological method, if removable. If the extending part is removed, the volume of the object is measured based on an outline of the object obtained after the extended part is removed, and a class 1 warning is issued. Otherwise, a class 2 warning is issued and the measurement is ended. This approach improves efficiency of the object volume measurement.

IPC Classes  ?

• G06T 7/194 - SegmentationEdge detection involving foreground-background segmentation
• G01B 11/02 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness
• G06T 7/12 - Edge-based segmentation
• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume

Abstract

The present invention provides a weighing protection device for a large-tonnage feed bin and a feed bin system thereof. The weighing protection device comprises a top plate assembly, a bottom plate assembly and a long screw rod assembly. The top plate assembly is a frame-shaped structure, which is mounted on the bottom plate assembly, and the top plate assembly is in clearance fit with the bottom plate assembly. The long screw rod assembly fixedly connects the top plate assembly and the bottom plate assembly to prevent the top plate assembly and the bottom plate assembly from separating from each other. The present invention implements the protection functions for weighing the large-tonnage feed bin, which functions comprise the functions of horizontal limiting, anti-overturn protection, vertical support protection, wind load resistance, and the like. The protection device is high in integration, convenient for mounting and maintenance, and low in cost. The design of the long screw rod assembly reduces the impact of the wind load on the metrological performance, and the self-return function of the feed bin can be implemented.

IPC Classes  ?

• G01G 21/22 - Weigh-pans or other weighing receptaclesWeighing platforms
• G01G 21/23 - Support or suspension of weighing platforms

Abstract

A method for correcting the level of a load cell in a weighing system comprising N load cells configured to weigh an object includes steps of: obtaining an actual load value from N load cells and performing a summation of the actual load values obtained from the N load cells, and calculating centre of mass of the object to be weighed in an X direction and a Y direction based on position coordinates of the N load cells; selecting a load cell from the N load cells and expressing the ideal load value of the (N-1) load cells in terms of an ideal load value of the selected load cell; calculating the ideal load value of each load cell based on a proportional relationship of the summation of the ideal load values of the N load cells and the summation of actual load value, wherein the proportional relationship is based on a principle that the centre of mass of the object to be weighed on a horizontal plane is constant; and calculating a load difference between the ideal load value and the actual load value of each load cell, and determining the least load difference Δwi of N load cells and output an instruction for correcting the level of the load cells. According to the adjustment method, the load cell can be conveniently and quickly adjusted based on the instructions.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/14 - Devices for determining tare weight or for cancelling out the tare by zeroising, e.g. mechanically operated
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A mechanical apparatus levelling mechanism has a base (10), an adjusting screw rod (20), an adjusting plate (30) and a support plate (40). The adjusting screw rod penetrates into the adjusting plate in an axial direction and is connected to the base. The adjusting plate is located on the base; the support plate is mounted at a top end of the adjusting screw rod and is located above the adjusting plate; and the adjusting plate rotates to drive the adjusting screw rod to rotate, such that the support plate is adjusted vertically. This simplifies the operation procedure, improving the assembly accuracy and improving the working efficiency. The method is simple to operate. These adjusting mechanisms are convenient to move and simple to adjust, are time-saving and labour-saving, and have adjustment dimensions that can be quantified. Moreover, the installation is simple, and the adjusting mechanisms themselves can be reused.

IPC Classes  ?

• F16M 7/00 - Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or baseAttaching non-moving engine parts, e.g. cylinder blocks
• F16M 5/00 - Engine beds, i.e. means for supporting engines or machines on foundations
• G01G 21/28 - FramesHousings

Abstract

The present invention provides a digital load cell with redundancy design, the digital load cell including: at least one force measuring element that measures a load force applied to the digital load cell, where each force measuring element converts the load force into one analog signal; and one or more analog-to-digital conversion modules, where each force measuring element is connected to at least one analog-to-digital conversion module, and the analog-to-digital conversion module converts the analog signal into a digital signal. According to the digital load cell of the present invention, redundancy design is provided at least for both the force measuring element and the analog-to-digital conversion module, which can effectively ensure the proper operation of the digital load cell.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/18 - Indicating devices, e.g. for remote indicationRecording devicesScales, e.g. graduated

Abstract

The present invention provides a weighing module having a lifting assembly and a weighing device comprising the same. The weighing module comprises a top plate, an inverted U-shaped plate with an upward opening, a sensor, a base plate a lifting assembly and a bearing head detachably connected to the top plate. An upper portion of the inverted U-shaped plate is connected to the top plate, a fixed parallelogram leg of the sensor is fixed to the base plate, and a movable parallelogram leg of the sensor is connected to the top plate the bearing head. The lifting assembly comprises a one end portion and the other end portion. The one end portion of the lifting assembly passes through a lower portion of the U-shaped plate and is fixed to the base plate, and the other end portion of the lifting assembly is arranged in the inverted U-shaped plate and is located under the top plate. When the weighing module is in a lifting state, the other end portion of the lifting assembly is raised up until the top plate is lifted, such that there is a spacing between the top plate and the bearing head. The present invention develops a set of components having a lifting function, which are organically integrated with the weighing module for use as a whole in a mobile weighing system. It can be used perfectly for retrofitting and upgrading of the old or conventional weighing systems. Meanwhile, the performance of the original weighing system remains unchanged.

IPC Classes  ?

• G01G 21/23 - Support or suspension of weighing platforms
• G01G 23/02 - Relieving mechanismsArrestment mechanisms

Abstract

A digital load cell includes: a strain bridge including a Wheatstone bridge formed by connecting four resistive strain gauges and a temperature sensing resistance element connected in series to the Wheatstone bridge. An analog-to-digital conversion circuit excites the strain bridge, and includes a plurality of input channels and an output terminal. The input channels receive feedback signals from the strain bridge, and the output terminal outputs the feedback signals after analog-to-digital conversion. A signal processor includes a load force calculation unit and a state information matrix calculation unit. The load force calculation unit calculates a differential voltage and a compensation function based on the feedback signals obtained from the output terminal, and calculates a load force value based on the differential voltage and the compensation function. The digital load cell and related weighing system; can provide comprehensive and effective real-time health state monitoring for the digital load cell.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 3/147 - Circuits specially adapted therefor involving digital counting

Abstract

These disclosures provide a weight stability control method for a deadweight force standard machine. For each weight in a sequence until all weights are loaded: weight platform is relatively rapidly moved downwards from an initial position, lifting a first-stage weight by a weight disk, and starting to load the first-stage weight starts; the first-stage weight is displaced relatively slowly when the first-stage weight communicates with a second-stage weight via corresponding lifting components for the first time; after the first-stage weight is completely separated from the second-stage weight, relatively rapidly displacing the weight platform downwards again until a gap between the first-stage weight and the second-stage weight reaches half of a pre-set gap value. The method provides control over the stability of the weights, effectively solving the weight shaking problem and improving testing efficiency.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A hanging scale sensor apparatus and hanging scale are disclosed. The hanging scale sensor apparatus includes an adapter beam connected to one end of a bottom face of a weighing sensor with a support base is connected to the other end of the bottom face of the weighing sensor. The adapter beam and a support base are positioned directly below the weighing sensor; and a scale pan suspension structure is connected to the adapter beam for positioning the hanging scale sensor apparatus.

IPC Classes  ?

• G01G 19/14 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing suspended loads
• G01G 21/22 - Weigh-pans or other weighing receptaclesWeighing platforms
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A load cell with a Roberval structure having an anti-offset function, and a weighing device are disclosed. The load cell includes strain detection elements mounted on an elastic element which includes a loading portion for receiving a load from a connector, a fixing portion for fixing the elastic element, a strain generation portion for converting the load into deformation, and a parallel guide beam for transferring the load and keeping the loading portion translational when loaded. The strain generation portion includes at least one hollow cavity body. The loading portion and the fixing portion are respectively located on left and right sides of the strain generation portion. The parallel guide beam is located at upper and lower portions of the strain generation portion A center of rotation and a geometric center of the strain generation portion coincide when the load cell with the Roberval structure is loaded.

IPC Classes  ?

• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 21/24 - Guides or linkages for ensuring parallel motion of the weigh-pans

Abstract

The present invention provides an automatic piston-gripping apparatus (100) and a pipette comprising the same. The automatic piston-gripping apparatus comprises a gripping mechanism (10), a holding shank (20), a first spring (30), and optionally a piston (40). The gripping mechanism (10) is arranged in the holding shank, (20) and the first spring (30) sleeves over the gripping mechanism (10) and is located between the gripping mechanism (10) and the holding shank (20). The piston-gripping apparatus (100) is configured for inserting a piston (40) from an end portion of the holding shank (20) that faces a collet (11) of the gripping mechanism (10) A locking ring (12) is arranged at a head of the collet (11). The end portion of the holding shank (20) is provided with a first limiting portion (21) for positioning the locking ring (12). The piston-gripping apparatus is configured for the collet (11) to extend out of the locking ring (12) when the locking ring (12) moves and/or moved to the first limiting portion (21) and to automatically grip the piston (40). The automatic piston-gripping apparatus (100) can quickly and adaptively grip the piston (40), and can produce a sound in the process of gripping the piston, this sound indicating a soon successful gripping, thereby avoiding a faulty operation by a user r.

IPC Classes  ?

• B01L 3/02 - BurettesPipettes

Abstract

The present invention relates to a method for determining the reliability of a weighing result, a computer-readable medium, and a related system. The method for determining the reliability of a weighing result includes: a step S1 of providing data comprising event data 3 and weighing data 4; a step S2 of training an Al classification algorithm using the data; and a step S3 of making inference about a weighing result 1. The method, the computer-readable medium, and the system 100 proposed by the present invention are able to determine whether a weighing system 101, 101', 101" operates normally and whether data displayed are reliable.

IPC Classes  ?

• G01G 23/06 - Means for damping oscillations, e.g. of weigh-beams

Abstract

Methods and systems for eccentric load error correction are disclosed. A plurality of weighing data sets for a weight having a mass value are obtained, where the weight is loaded at different positions on a weighing platform of a weighing device. Differences between each of the weighing data sets and the average value of the plurality of weighing data sets or the mass value of the weight are calculated. Sensor correction coefficients are calculated and updated when the maximum absolute value of the differences exceeds a pre-set threshold. The weighing data sets are updated. The above steps are repeated until the absolute values of all the differences are less than the pre-set threshold.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

1) lies on the horizontal line (H) through the center of the calibration lever fulcrum. The calibration error caused by inclination in the force sensor is reduced by practice of this method.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

The present invention provides a hydraulic system micro-adjustment device and a tank calibration system comprising same. The hydraulic system micro-adjustment device comprises a base, a piston, a valve body, a valve core and a handle, characterized in that the valve body is internally provided with an inner cavity for receiving the valve core from an upper portion of the valve body, wherein the valve core is in threaded connection with the inner cavity; the piston is inserted into the inner cavity from a lower portion of the valve body, the piston abuts against the valve core, the lower portion of the valve body is mounted in the base and is in communication with oil passages in the base, and the handle is connected to a top of the valve core; and the valve core is movable along the inner cavity upon rotation of the handle thereby pushing the piston to move along the inner cavity, so as to change the volume of a cavity formed by the base, the valve body, and the piston. According to the present invention, the adjustment of pressure in a local range can be achieved, thereby reducing the number of times of pressurization to improve the calibration efficiency. The target pressure value can be reached quickly and stably, thereby reducing uncertainty and improving the calibration accuracy.

IPC Classes  ?

• F16K 31/60 - Handles

Abstract

The present invention relates to a tilt compensation apparatus and a tilt compensation method for a weighing system comprising a column-type load cell. The tilt compensation method includes: S1: performing tilt angle calibration and horizontal rotation angle calibration on the weighing system; S2: aligning the column-type load cell to a specified tilt angle and a specified horizontal rotation angle, and measuring a weight, a tilt angle, and a horizontal rotation angle under load; S3: calculating a weight compensation value based on the specified tilt angle and the specified horizontal rotation angle as well as the measured weight, tilt angle, and horizontal rotation angle; and S4: calculating an actual weighing weight based on an actual measured weight of the weighing system and the weight compensation value. According to the tilt compensation apparatus and the tilt compensation method therefor proposed in the present invention, accurate tilt compensation can be provided for the weighing system having a column-type load cell.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

The present invention relates to a tilt compensation apparatus and a tilt compensation method for a weighing system comprising a column-type load cell. The tilt compensation method includes: S1: performing tilt angle calibration and horizontal rotation angle calibration on the weighing system; S2: aligning the column-type load cell to a specified tilt angle and a specified horizontal rotation angle, and measuring a weight, a tilt angle, and a horizontal rotation angle under load; S3: calculating a weight compensation value based on the specified tilt angle and the specified horizontal rotation angle as well as the measured weight, tilt angle, and horizontal rotation angle; and S4: calculating an actual weighing weight based on an actual measured weight of the weighing system and the weight compensation value. According to the tilt compensation apparatus and the tilt compensation method therefor proposed in the present invention, accurate tilt compensation can be provided for the weighing system having a column-type load cell.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A discharge flow rate of a loss-in-weight scale is controlled by continuously changing control outputs to save the time necessary for data stabilization. A curve relating the discharge flow rate and the control output is obtained by using the functional relationship between the control output and time and the functional relationship between the material weight and time. The discharge flow rate can be precisely controlled by directly selecting or inputting a value of the control output, to achieve the objectives of direct controlling and of avoiding the time for data stabilization.

IPC Classes  ?

• G01G 11/08 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers having means for controlling the rate of feed or discharge
• G05D 7/06 - Control of flow characterised by the use of electric means
• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors

Abstract

The present invention provides a U-shaped plate for a weighing module and a weighing module comprising same. The U-shaped plate comprising a first side surface and a second side surface and an upper end surface connecting the first side surface and the second side surface the first and the second side each comprising a bottom end and an upper portion together forming four corners of the U-shaped plate wherein said U-shaped plate is of an inverted U-shaped structure formed by bending a flat and straight metal sheet. A lower width of the U-shaped plate is greater than an upper width thereof. The U-shaped plate is further characterized by an opening for mounting the sensor. The opening extends from the bottom end of the first side surface to the upper portion of the second side surface via an upper end surface. Each of the four corners of the U-shaped plate is configured as a recessed structure According to the present invention, the U-shaped plate having a novel structure, a nice appearance and a reliable performance, when used with a weighing module, perfectly matches the sensor. The design of integrated molding overcomes the defects, realizes safety and practicability, improves competitiveness and provides solution that meets various requirements.

IPC Classes  ?

• G01G 21/28 - FramesHousings

Abstract

The present invention provides an integrated high-precision weighing module, comprising a scale pan (10), a lever (20), an internal calibration system (30), a bottom plate assembly (40),and a sensor main body (50). The scale pan (10) is mounted on the lever (20), and the lever (20) is connected to the sensor main body (50); wherein the internal calibration system (30), the sensor main body (50), and the lever (20) are arranged transversely, and the internal calibration system (30) and the sensor main body (50) are respectively attached to the bottom plate assembly (40). The weighing module of the present invention has less number of parts, smaller in size, and is easy to manufacture, and the internal calibration system and a weighing unit can be implemented with one lever. The weighing module has a great cost advantage over existing products and has additional features such as the internal calibration system, being highly dustproof and waterproof, easy to clean, and the weighing module can ensure long-term reliability of a product and is easy for customers to operate.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A key determination method for a metal key. The method comprises a step of determining whether values output by an electrical parameter converter on a metal key satisfy multiple levels of thresholds, and, a step of setting a press flag of the metal key according to multiple levels of thresholds; and after the metal key is released, determining whether a release flag is valid according to a press model, and if so, clearing the press flag that was previously set. Different press models and different thresholds are selected and configured by means of software, so that personalized choices are provided for respective metal keys, which effectively facilitates different operators in configuring a metal keyboard according to usage habits, thereby improving the operating efficiency. In addition, the setting of different thresholds effectively protects the operational details mean for the exclusive use of operators, thereby achieving the required confidentiality.

IPC Classes  ?

• G06F 3/03 - Arrangements for converting the position or the displacement of a member into a coded form
• G06F 3/02 - Input arrangements using manually operated switches, e.g. using keyboards or dials

Abstract

The present invention relates to an apparatus and a method for compensating tilt. The method for compensating tilt comprises the steps of, S1: generating a tilt compensation model f (θ) for a weighing system on basis of a gravity decomposition model, which is a trigonometric function; S2: obtaining a plurality of calibration data sets based on a calibration performed on the weighing system in a level state and in a tilted state; S3: calculating correlation between the plurality of calibration data sets and the tilt compensation model f (θ); and S4: substituting a measured tilt angle θ into the tilt compensation model f (θ), to calculate a compensated weighing weight based on an uncompensated measurement weight output of the weighing system. The apparatus and the method for compensating tilt proposed in the present invention can provide accurate tilt compensation for a weighing system.

IPC Classes  ?

• G01G 23/00 - Auxiliary devices for weighing apparatus
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

The present invention provides a filtering method and a filtering control apparatus for a load cell. The filtering method includes: filtering, by using a plurality of filtering units, first weighing data obtained by the load cell, to obtain a plurality of pieces of second weighing data, where the plurality of filtering units have different settling times; obtaining a fluctuation index of each piece of second weighing data, and establishing a correspondence between a fluctuation index and a settling time of each filtering unit; and determining a target filtering unit based on the correspondence according to a weighing requirement, where a fluctuation index of the target filtering unit matches a target precision in the weighing requirement, and a settling time of the target filtering unit matches a target speed in the weighing requirement. The filtering method and the filtering control apparatus of the present invention can achieve fast and good user experience in a weighing process.

IPC Classes  ?

• G01G 23/10 - Means for damping oscillations, e.g. of weigh-beams by electric or magnetic means

Abstract

The present invention provides a dynamic modular checkweigher, comprising: a weighing and conveying matrix unit having a weighing and conveying surface composed of a plurality of weighing and conveying sub-units; a weighed object identification unit for identifying a weighed object and a coverage thereof by means of images or weights of the weighing and conveying sub-units; a weighed object conveying movement control unit for controlling arrangements of a plurality of weighed objects on the weighing and conveying matrix unit; a weighed object movement tracking unit for identifying a movement trajectory of a weighed object and creating a time sequence-based data set of movement state, movement position, and weighing signal from data of the weighing and conveying sub-units covered by the weighed object; and a weighed object weighing module unit for acquiring a weighed object data set created on the basis of the weighed object movement tracking unit. The various parts mentioned above are connected to a host system to form a star topology. According to the present invention, package separation functions such as unpacking, arranging, and pulling of a package separation system can be achieved, and mutual interferences in weighing objects by the checkweighercan be reduced.

IPC Classes  ?

• G01G 19/03 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion

Abstract

The present invention relates to a method for detecting and removing personnel interference while measuring volume of an object. The method includes the following steps of S1: obtaining an image of an object, removing a background information of the image, and converting the image into a binary image; S2: detecting an outline of the object from the binary image, and determining whether the outline of the object extends towards a boundary of the field of view; and if the outline of the object does not extend to the boundary of the field of view, performing S3;S3: measuring the volume of the object; else performing step S4; S4: removing an extending part from the outline of the object, using a morphological method; and if the extending part is removable, then performing S5; S5: measuring the volume of the object based on an outline of the object obtained after the extended part is removed, and issuing a class 1 warning; else performing step S6; S6: issuing a class 2 warning, and performing S7; S7: ending the measurement. The method of detecting and removing the personnel interference while measuring the volume of an object as disclosed in the present invention can effectively improve efficiency of the object volume measurement.

IPC Classes  ?

• G06T 7/13 - Edge detection
• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume
• G06T 7/194 - SegmentationEdge detection involving foreground-background segmentation

Abstract

The present invention relates to a volume measurement method and apparatus based on a depth camera, and a computer-readable medium. The method includes: acquiring a first depth image of a reference countertop, where the first depth image includes coordinate data and depth data of a plurality of pixels, and the reference countertop is adapted to the placement of a measured object; substituting the coordinate data and the depth data into at least two countertop empirical equations, to obtain at least two simulated images, wherein each of the countertop empirical equations is used to represent a height variation pattern of the reference countertop; calculating a correlation between each of the simulated images and the first depth image; using a simulated image with the highest correlation as a target image of the reference countertop; and obtaining a countertop height of the reference countertop based on the target image, wherein the countertop height is used to calculate a height of the measured object, and the height is used to calculate a volume of the measured object. The present invention improves the accuracy of object volume measurement.

IPC Classes  ?

• G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
• G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
• G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points

Abstract

The present invention provides a display device, and an electronic weighing instrument or a cash register comprising the same. The display device comprises a commercial high-definition liquid crystal display screen (10) having a viewing side and a mounting side, and further comprises a sheet metal support frame (10-2) on the mounting side; a metal-stud support plate (20) provided on the mounting side of the liquid crystal display screen (10); and at least one ground isolator (40) having a first terminal and a second terminal; wherein the ground isolator (40) is mounted between the sheet metal support frame (10-2) and the metal-stud support plate (20), and the first terminal (40B-3) of the ground isolator (40) is connected to the sheet metal support frame (10-2), and the second terminal (40B-4) of the ground isolator (40) is connected to the metal-stud support plate (20). According to the present invention, inserting a plurality of ground isolators (40) between the sheet metal support frame (10-2) and the metal-stud support plate (20) can eliminate a high-frequency eddy current induced on the sheet metal support frame, and alleviate spatial coupling interference of electrostatic discharge (ESD).

IPC Classes  ?

• G02F 1/1333 - Constructional arrangements
• G02F 1/1362 - Active matrix addressed cells

Abstract

The present invention relates to a method for associating a commodity and a picture thereof. The method of associating includes: step S1 of creating a commodity list; step S2 of selecting commodities in the commodity list one by one, and obtaining corresponding pictures based on the commodities selected; step S3 of generating a mapping association between the commodity list and the corresponding pictures which is achieved by changing a name of the corresponding picture to a number of the commodity selected or by changing an attribute of the corresponding picture to a number of the commodity selected; and step S4 of delivering the pictures and the mapping association to a retail device, so that the retail device displays the pictures corresponding to the commodity list, according to the mapping association generated. The method of associating a commodity and a picture thereof proposed in the present invention can avoid the work of renaming the pictures, and can effectively improve the efficiency of associating a commodity with a picture thereof.

IPC Classes  ?

• G06Q 30/06 - Buying, selling or leasing transactions
• G07F 9/02 - Devices for alarm or indication, e.g. when emptyAdvertising arrangements in coin-freed apparatus

Abstract

The present invention relates to a method of activating an electronic device. The activation method includes: step S1: converting, by the electronic device, its identification number into a first identifiable code, and displaying the first identifiable code; step S2: scanning the first identifiable code to obtain an identification code of the electronic device; step S3: sending the identification code to an authentication system, for generating an activation code; step S4: obtaining the activation code, converting the activation code into a second identifiable code, and displaying the second identifiable code; and step S5: scanning the second identifiable code using electronic device to obtain the activation code. According to the method proposed in the present invention, an activation code of the electronic device does not need to be manually entered, thereby shortening an activation period of the electronic device.

IPC Classes  ?

• G07B 15/06 - Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
• A61B 90/98 - Identification means for patients or instruments, e.g. tags using electromagnetic means, e.g. transponders
• G06F 21/34 - User authentication involving the use of external additional devices, e.g. dongles or smart cards
• G06Q 20/32 - Payment architectures, schemes or protocols characterised by the use of specific devices using wireless devices
• G06Q 20/34 - Payment architectures, schemes or protocols characterised by the use of specific devices using cards, e.g. integrated circuit [IC] cards or magnetic cards
• H04L 9/40 - Network security protocols
• H04W 4/50 - Service provisioning or reconfiguring
• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• H04W 8/20 - Transfer of user or subscriber data
• H04W 12/30 - Security of mobile devicesSecurity of mobile applications

Abstract

The present invention provides a modular camera and a scale body comprising same. The modular camera comprises a camera module and a plurality of accessories, wherein the camera module comprises a camera, a camera housing and an anti-fouling lens; a camera fixing screw bore and an extended screw bore are formed in the camera housing; and the camera is fixed to the camera fixing screw bore and the extended screw bore and is interconnected with the plurality of accessories to form a consolidated structure. In the present invention, a basic module of the camera and plurality of accessories are combined to be conveniently mounted on different scale bodies, and other auxiliary accessories can be assembled by using adapters, thereby achieving cooperative use of various structures, and remarkably reducing research and development and production costs.

IPC Classes  ?

• F16M 13/04 - Other supports for positioning apparatus or articlesMeans for steadying hand-held apparatus or articles for supporting on, or holding steady relative to, a person, e.g. by chains

Abstract

The present invention provides a digital load cell with redundancy design, the digital load cell including: at least one force measuring element that measures a load force applied to the digital load cell, where each force measuring element converts the load force into one analog signal; and one or more analog-to-digital conversion modules, where each force measuring element is connected to at least one analog-to-digital conversion module, and the analog-to-digital conversion module converts the analog signal into a digital signal. According to the digital load cell of the present invention, redundancy design is provided at least for both the force measuring element and the analog-to-digital conversion module, which can effectively ensure the proper operation of the digital load cell.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

The present invention relates to a digital load cell and a weighing system. The digital load cell includes: a strain bridge including a Wheatstone bridge formed by connecting four resistive strain gauges and a temperature sensing resistance element connected in series to the Wheatstone bridge; an analog-to-digital conversion circuit that excites the strain bridge, where the analog-to-digital conversion circuit includes a plurality of input channels and an output terminal, the input channels are configured to receive feedback signals from the strain bridge, and the output terminal is configured to output the feedback signals after analog-to-digital conversion; and a signal processor including a load force calculation unit and a state information matrix calculation unit, where the load force calculation unit calculates a differential voltage and a compensation function based on the feedback signals obtained from the output terminal of the analog-to-digital conversion circuit, and calculates a load force value based on the differential voltage and the compensation function. The present invention proposes the digital load cell and the weighing system, which can provide comprehensive and effective real-time health state monitoring for the digital load cell.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance

Abstract

The present invention provides a weight stability control method for a deadweight force standard machine, which method comprises the steps: S1, rapidly moving a weight platform downwards from an initial position, lifting a first-stage weight by a weight disk, and starting to load the first-stage weight starts; S2, starting to slowly displace the first-stage weight when the first-stage weight communicates with a second-stage weight via corresponding lifting components for the first time; S3, after the first-stage weight is completely separated from the second-stage weight, rapidly displacing the weight platform downwards again until a gap between the first-stage weight and the second-stage weight reaches half of a pre-set gap value; and S4, repeating steps S1-S3 in the loading process of the first-stage weight for the second-stage weight to the nth-stage weight in sequence until all the weights are loaded. The present invention can achieve control over the stability of the weights, effectively solve the weight shaking problem and improve the testing efficiency.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A hysteresis compensation method, in which a hysteresis error is calculated for an obtained weighing value by means of an ideal hysteresis error model, and an ideal compensation value is further calculated by means of an ideal hysteresis compensation model, wherein by using a proportional relationship between a system hysteresis error model established in hysteresis calibration and the ideal hysteresis error model, the ideal compensation value is corrected to a final compensation value. The method establishes a mapping relationship between the system's own hysteresis compensation and the ideal state hysteresis compensation, and realizes the transformation of a complicated hysteresis error compensation situation into an ideal hysteresis error compensation situation. The method not only has a good compensation effect for the hysteresis error compensation under ideal situations, but also can obtain an excellent hysteresis compensation effect under complicated hysteresis situations.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/37 - Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting

Abstract

A method of weighing using a scale (10) comprises the steps of: recognizing at least one of a plurality of objects placed within an object recognition area (A) of a platform (20) of the scale (10), and weighing the plurality of objects placed on the platform (20) of the scale (10) to determine a total weight of the plurality of objects. A weighing device (10) comprises the platform (20) configured as a plane, and utilizes the aforementioned weighing method. The method of weighing is advantageous in that it reduces the difficulty of object recognition using an algorithm by increasing the degree to which the object on the weighing platform fits the algorithm, reduces the complexity of the operation flow and the time required, and effectively increases the precision and accuracy of object recognition.

IPC Classes  ?

• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
• G01G 21/22 - Weigh-pans or other weighing receptaclesWeighing platforms
• G06V 10/22 - Image preprocessing by selection of a specific region containing or referencing a patternLocating or processing of specific regions to guide the detection or recognition
• G06V 10/70 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning
• G06V 20/50 - Context or environment of the image
• G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects

Abstract

A weighing method comprises the steps of: recognizing one or more objects to be detected on a first scale platform top (A) or within an object recognition area of the first scale platform top (A), and weighing the objects to be detected that are placed on a second scale platform top (B). A weighing system comprises at least two scales having scale platform tops utilizing the weighing method outlined above. The weighing method reduces the difficulty of algorithm recognition by increasing the degree to which the object on the weighting platform fits the algorithm, reduces the complexity of operation flow and the time required, and effectively increases the precision and accuracy of object recognition.

IPC Classes  ?

• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
• G01G 19/415 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only combined with recording means

Abstract

A telescoping electric pipette controller has a handle, a head end portion, an outer shell and a manual retainer. One end of the head end portion is arranged in an end portion of the handle in a penetrating manner, the outer shell is sheathed over an outer surface of the end portion of the handle, and one end portion of the manual retainer is rotatably connected to the outer shell. By means of opening or fastening the manual retainer, one end portion of the manual retainer is released outwards or pressed inwards against the head end portion, allowing extension and retraction of the head end portion relative to the handle. The extension and retraction, as well as the locking of part of a grip structure, are controlled by means of a switch, allowing the grip to change the length within a specific range.

IPC Classes  ?

• B01L 3/02 - BurettesPipettes
• G01N 35/10 - Devices for transferring samples to, in, or from, the analysis apparatus, e.g. suction devices, injection devices

Abstract

A hanging scale sensor apparatus (1) and a hanging scale (100) are provided. The hanging scale sensor apparatus (1) comprising a weighing sensor (10), an adapter beam (20), a support base (30) and a scale pan suspension structure (40).The adapter beam (20) is connected to one end of a bottom face of the weighing sensor (10). The support base (30) is connected to the other end of the bottom face of the weighing sensor (10). The adapter beam (20) and the support base (30) are positioned directly below the weighing sensor (10); and the scale pan suspension structure (40) is connected to the adapter beam (20) for positioning the hanging scale sensor apparatus (1).The hanging scale sensor apparatus (1) may be assembled separately, may be placed inside a scale body (50) according to requirements, and may further adjust the internal space of the scale body (50). The hanging scale sensor apparatus (1) has an adjustable installation position, and can realize two-way limitations, prevent overloading, and occupy small installation space. The hanging scale sensor apparatus (1) has a small overall size and thus has little influence on the structural layout of the scale body (50), and is suitable for the design of a super-thin scale body structure.

IPC Classes  ?

• G01G 23/00 - Auxiliary devices for weighing apparatus
• G01G 19/14 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing suspended loads

Abstract

The present invention provides a load cell with a Roberval structure having an anti-offset function, and a weighing device. The load cell comprises: an elastic element and a plurality of strain detection elements, the strain detection elements being mounted on the elastic element; the elastic element comprises: a loading portion for receiving a load from a connector, a fixing portion for fixing the elastic element, a strain generation portion for converting the load into deformation, and a parallel guide beam for transferring the load and keeping the loading portion translational when loaded; the strain generation portion is composed of at least one hollow cavity body, the loading portion and the fixing portion are respectively located on left and right sides of the strain generation portion, and the parallel guide beam is located at upper and lower portions of the strain generation portion; and the centre of rotation and the geometric centre of the strain generation portion coincide when the load cell with the Roberval structure is loaded. The load cell and the weighing device of the present invention can effectively compensate a non-linear offset error. By adjusting the stiffness of upper and lower beams of the elastic element, the non-linear offset error is compensated from the aspect of mechanical structure design.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 21/24 - Guides or linkages for ensuring parallel motion of the weigh-pans

Abstract

The present invention discloses a method and system for eccentric load error correction. The correction method comprises the steps of: obtaining a plurality of weighing data sets for a weight having a mass value, when the weight is loaded at different positions on a weighing platform of a weighing device; calculating differences between each of the weighing data sets and the average value of the plurality of weighing data sets or the mass value of the weight; calculating and updating sensor correction coefficients when the maximum absolute value of the differences exceeds a pre-set threshold; then updating the weighing data sets; and repeating the above steps until the absolute values of all the differences are less than the pre-set threshold. The correction system comprises a processing device and a communication device, wherein the processing device and the communication device perform the above correction method.

IPC Classes  ?

• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

The present invention discloses force sensor (100) and a method for configuring a calibration mechanism in such a force sensor (100), the method comprising the steps of: coupling an end of the calibration lever (1071) to a loading end (103) of the force sensor (100); adjusting, in a no-load condition, the gravity centre (G0) of the unloaded calibration lever (1071), so that the gravity centre (G0) is lying on a substantially horizontal line (H) which goes through the centre of a calibration lever fulcrum (1031) at a fixed end (103) of the force sensor (100); and adjusting, in a full-load condition, the gravity centre (G1) of the calibration lever (1071) loaded with the calibration weight (106), so that the gravity centre (G1) is lying on the substantially horizontal line (H) which goes through the centre of the calibration lever fulcrum (1031). By controlling the position of the lever and the position of the fulcrum in the force sensor to be approximately on the same horizontal line, the calibration error caused by the inclination in force sensor is reduced.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

A method and device are provided for diagnosing a weighing system. In the method, the weighing system acquires an intrinsic parameter, a status parameter, and an operating parameter of various components of the weighing system, environmental parameters of the weighing system application, and communication data and interaction data among all the components. A first-level prompt is sent when the status of any of the components is abnormal, such that the system stops operating. A second-level prompt is sent when the status of each of the components is normal and the service life status of at least one of the components reaches a preset threshold. A third-level prompt is sent when the status of each of the components is normal and a system performance abnormality event is identified for the performance status of the system. A fourth-level prompt is sent when the status of each of the components is normal.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G05B 23/02 - Electric testing or monitoring

Abstract

A method and a system measure interfering influences on a checkweighing device. In the method, external interference data are obtained, as are interference data from the checkweighing device itself and interference data from an object being weighed, by calculating or mapping the weighing error data in the stationary state, in the operating state, and in the weighing state. The system for measuring the interference uses a meter and a processing apparatus. The meter and the processing apparatus perform an interference measurement and a compensation method. The amount of interference in the checkweighing device in each state and the amount of influence of the interference on the weighing performance is obtained, thereby facilitating the production, debugging, maintenance, and use of a checkweighing device.

IPC Classes  ?

• G01G 11/00 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers
• G01G 15/00 - Arrangements for check-weighing of materials dispensed into removable containers
• G01G 19/387 - Weighing apparatus or methods adapted for special purposes not provided for in groups for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value
• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

An integrated high-precision weighing module has a shell, an electromagnetic force sensor, a printed circuit board (PCB), a weighing pan component, a support ring, and an air baffle ring. The electromagnetic force sensor and the PCB are mounted in the shell. A bearing head of the electromagnetic force sensor extends upward from an upper end portion of the shell. The support ring sheathes the bearing head. The weighing pan component is mounted on the bearing head, with the support ring located between the weighing pan component and the shell. The air baffle ring is disposed around the weighing pan component and located on the support ring. A first airflow channel is formed among the shell, the support ring, and the air baffle ring. At least part of airflow in the shell flows to the outside through the first airflow channel.

IPC Classes  ?

• G01G 7/02 - Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups by electromagnetic action
• G01G 21/02 - Arrangements of bearings
• G01G 21/22 - Weigh-pans or other weighing receptaclesWeighing platforms
• G01G 21/28 - FramesHousings
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A scale having a sealing structure is provided. The scale comprises a platform (100), a load cell assembly (200), a sealing assembly (300), and a fixed base (400). The load cell assembly (200) is mounted on the fixed base (400). The sealing assembly (300) is connected to the platform (100), forming a hollow cavity (D). The load cell assembly (200) is securely sealed in the cavity (D). Because of addition of a protective arrangement such as the sealing assembly (300) on the periphery of a load cell (210) and its related components, the scale makes cleaning/washing of the scale easier and widens the application scope of the weighing product. Due to the use of an integrally formed sealing technology, dust and dirt cannot enter the space surrounding the load cell (210) and its peripheral components. The presence of sealing component makes it convenient for the user to clean and wash the weighing device.

IPC Classes  ?

• G01G 19/62 - Over or under weighing apparatus
• G01G 21/28 - FramesHousings
• G01G 21/30 - Means for preventing contamination by dust

Abstract

A method for controlling a discharge flow rate of a loss-in-weight scale is provided, wherein control outputs are continuously changed to save the time necessary for data stabilization, and a curve of relationship between the discharge flow rate and the control output is obtained by using the functional relationship between the control output and time and the functional relationship between the material weight and time. The discharge flow rate can be precisely controlled by directly selecting or inputting a value of the control output, to achieve the objectives of direct controlling and of avoiding the time for data stabilization.

IPC Classes  ?

• G01G 13/24 - Weighing mechanism control arrangements for automatic feed or discharge
• G05B 19/05 - Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
• G01G 11/08 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers having means for controlling the rate of feed or discharge

Abstract

A mechanical apparatus levelling mechanism and a levelling method therefor. The mechanical apparatus levelling mechanism comprises a base (10), an adjusting screw rod (20), an adjusting plate (30) and a support plate (40), wherein the adjusting screw rod (20) penetrates into the adjusting plate (30) in an axial direction and is connected to the base (10); the adjusting plate (30) is located on the base (10); the support plate (40) is mounted at a top end of the adjusting screw rod (20) and is located above the adjusting plate (30); and the adjusting plate (30) rotates to drive the adjusting screw rod (20) to rotate, such that the support plate (40) is adjusted vertically. The mechanism achieves the purposes of simplifying the operation procedure, improving the assembly accuracy and improving the working efficiency. The method is simple to operate. These adjusting mechanisms are convenient to move and simple to adjust, are time-saving and labour-saving, and have adjustment dimensions that can be quantified. Moreover, the installation is simple, and the adjusting mechanisms themselves can be reused.

IPC Classes  ?

• F16M 7/00 - Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or baseAttaching non-moving engine parts, e.g. cylinder blocks

Abstract

A weighing method has an automatic micro-calibration function. In the method, an automatic adjustment is performed by a self-calibration weighing module. When the result of the adjustment does not meet a requirement, an automatic calibration is performed by the self-calibration weighing module, followed by weighing fine formulation materials. In the weighing method, the self-calibration module is used to perform the automatic calibration function to weigh the fine formulation materials. This provides a high degree of automation, and greatly reduced cost in equipment and labor for a formulating process, saving on time and labor, and with no risk of cross-contamination.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 13/02 - Means for automatically loading weigh-pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism

Abstract

A method and apparatus for managing information about a measurement device, which is applied to a network system including a plurality of blockchains that includes a first blockchain and a second blockchain, data sender node devices and data manager node devices, the method can comprise receiving a cross-chain request from a data manager node device for device state information associated with a measurement device stored in the first blockchain, wherein the data manager node device is a node device for a second blockchain, verifying, in response to the cross-chain request, that a data manager associated with the data manager node is authorized to manage the device state information, obtaining a target depository transaction corresponding to the device state information, wherein the target depository transaction is stored on the first blockchain and was previously saved to the first blockchain by a data sender node device, wherein the data sender node device is a node device for the first blockchain, and performing management of the device state information based on the target depository transaction.

IPC Classes  ?

• G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules
• G06F 8/65 - Updates
• G06F 16/27 - Replication, distribution or synchronisation of data between databases or within a distributed database systemDistributed database system architectures therefor

Abstract

A method and apparatus are disclosed for managing a measurement device based on a blockchain, which is applied to node devices in a blockchain network. The method can include obtaining device state data of the measurement device at various stages in the life cycle of the measurement device; constructing a target transaction based on the obtained device state data, and then sending the target transaction to other node devices in the blockchain network to perform consensus processing on the target transaction; and storing, when a consensus of the target transaction is reached, the target transaction into a distributed ledger of the blockchain network, wherein the target transaction stored in the distributed ledger of the blockchain network is used for life cycle management of the measurement device.

IPC Classes  ?

• G06F 16/23 - Updating
• G06F 11/07 - Responding to the occurrence of a fault, e.g. fault tolerance

Abstract

A key determination method for a metal key. The method comprises a step of determining whether values output by an electrical parameter converter on a metal key satisfy multiple levels of thresholds, and, a step of setting a press flag of the metal key according to multiple levels of thresholds; and after the metal key is released, determining whether a release flag is valid according to a press model, and if so, clearing the press flag that was previously set. Different press models and different thresholds are selected and configured by means of software, so that personalized choices are provided for respective metal keys, which effectively facilitates different operators in configuring a metal keyboard according to usage habits, thereby improving the operating efficiency. In addition, the setting of different thresholds effectively protects the operational details meant for the exclusive use of operators, thereby achieving the required confidentiality.

IPC Classes  ?

• H03M 11/20 - Dynamic coding, i.e. by key scanning

Abstract

The present invention discloses a checkweigher comprising a conveying belt (1,1a)for conveying an object. The checkweigher comprises an object shape recognition apparatus for detecting and recognizing information about the shape of a contact surface between the object conveyed on the conveying belt (1,1a) of the checkweigher and the conveying belt (1,1a) and information about the position of the object on the conveying belt (1,1a). The checkweigher further comprises a calculation unit for querying or calculating a correction parameter with the information about the shape and the information about the position of the object on the conveying belt (1,1a), and correcting the weight of the object obtained by the checkweigher with the correction parameter. By means of the present invention, weighing data is compensated and corrected by recognizing the dimension of the object on the conveying belt(1,1a) and the position thereof on the conveying belt (1,1a), to remove impact of the detected object on dynamic weighing, thereby improving the weighing precision.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

A hysteresis compensation method, in which a hysteresis error is calculated for an obtained weighing value by means of an ideal hysteresis error model, and an ideal compensation value is further calculated by means of an ideal hysteresis compensation model, wherein by using a proportional relationship between a system hysteresis error model established in hysteresis calibration and the ideal hysteresis error model, the ideal compensation value is corrected to a final compensation value. The method establishes a mapping relationship between the system's own hysteresis compensation and the ideal state hysteresis compensation, and realizes the transformation of a complicated hysteresis error compensation situation into an ideal hysteresis error compensation situation. The method not only has a good compensation effect for the hysteresis error compensation under ideal situations, but also can obtain an excellent hysteresis compensation effect under complicated hysteresis situations.

IPC Classes  ?

• G01G 23/01 - Testing or calibrating of weighing apparatus

Abstract

An object recognition apparatus, system and method. The object recognition apparatus, comprising: a first image matching module, configured to perform comparison and screening on first image feature information in image feature information of each type of object and a first image feature of a target object; a counting module, configured to weigh and count the target objects one by one according to mass distribution information of each type of objects; a calculation module, configured to calculate, according to the mass distribution information of each type of objects and the corresponding weighing and counting data, a counting error allowed due to a statistical error of each type of objects; and a determination module, configured to perform screening by determining whether the weighing and counting data is within the range of the counting error allowed due to the statistical error of the corresponding type of objects.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A counting check device, a counting system and a method are disclosed. The counting check device, comprising: a processing unit for performing image recognition based counting on an image of objects being counted; a calculation unit for counting by weighing based on a total weight of the objects being counted and a pre-stored mass distribution information; and a determination unit for determining, based on the pre-stored mass distribution information, whether a count obtained in the image recognition based counting is within a count error range of the count obtained in the counting by weighing; if true, the count obtained in the image recognition based counting is determined to be the count of the objects; and if false, the processing unit performing the image recognition counting again. The counting check device, and a counting system and method can ensure a count result to be accurate.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A weighing method comprises the steps of: recognizing one or more objects to be detected on a first scale platform top (A) or within an object recognition area of the first scale platform top (A), and weighing the objects to be detected that are placed on a second scale platform top (B). A weighing system comprises at least two scales having scale platform tops utilizing the weighing method outlined above. The weighing method reduces the difficulty of algorithm recognition by increasing the degree to which the object on the weighting platform fits the algorithm, reduces the complexity of operation flow and the time required, and effectively increases the precision and accuracy of object recognition.

IPC Classes  ?

• G01G 19/40 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A method of weighing using a scale (10) comprises the steps of: recognizing at least one of a plurality of objects placed within an object recognition area (A) of a platform (20) of the scale (10), and weighing the plurality of objects placed on the platform (20) of the scale (10) to determine a total weight of the plurality of objects. A weighing device (10) comprises the platform (20) configured as a plane, and utilizes the aforementioned weighing method. The method of weighing is advantageous in that it reduces the difficulty of object recognition using an algorithm by increasing the degree to which the object on the weighing platform fits the algorithm, reduces the complexity of the operation flow and the time required, and effectively increases the precision and accuracy of object recognition.

IPC Classes  ?

• G01G 19/40 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
• G01G 19/414 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A device and a method for improving weighing reliability comprises a light source (11) arranged on a side surface of a frame of weighing equipment (1) and used for projecting light beams (13) to the outside of the weighing equipment (1). The device also comprises an image capture device (12) arranged on the side surface on which the light source (11) is arranged and the image capture device (12) is used for capturing a projection image of the light beams (13) on a projection surface. The device further comprises an image processor used for validating whether the projection image is incomplete and thereby determining whether an object to be weighed overlaps the ground surface or the frame of the weighing equipment (1). The device and the method for improving weighing reliability can improve the application range of an exceeding detection and reliability in the weighing process.

IPC Classes  ?

• G01G 21/22 - Weigh-pans or other weighing receptaclesWeighing platforms
• G01G 21/28 - FramesHousings
• G01G 23/00 - Auxiliary devices for weighing apparatus

Abstract

The present invention provides a method of continuously performing weighing, counting and packaging using a weighing scale, which comprises a controller, a weighing platform, and a display screen. The method comprising steps for reading parameters of each type of items in the list, identifying the items on the weighing platform and determining parameters of the items and carrying out weighing and counting before packaging. The method also involves reporting an error in case of a parameter mismatch and drawing the attention of an operator for performing a manual check. The present method simplifies the operation, shortens the counting and packaging time, reduces the error, and improves work efficiency.

IPC Classes  ?

• B65B 57/20 - Applications of counting devices for controlling the feed of articles
• G01G 19/42 - Weighing apparatus or methods adapted for special purposes not provided for in groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight for counting by weighing

Abstract

A force sensor has a first end portion (1), a second end portion (2), a parallel-guiding mechanism (3), a beam (4), and a strain gauge (5). The parallel-guiding mechanism (3) connects the first end portion (1) to the second end portion (2). A main beam (43) of the beam has a flexible wall (435) and a rigid wall (432). A first connecting part (41) connects the flexible wall to the first end portion, and a second connecting part (42) connects the rigid wall to the second end portion. The strain gauge (5) is fixed to the flexible wall (435). The force sensor can measure a relatively small force.

IPC Classes  ?

• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
• G01G 21/24 - Guides or linkages for ensuring parallel motion of the weigh-pans
• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance

Abstract

Disclosed is a method and a device for fixing a strain gauge (4), the method including: applying an adhesive to a surface of an object (2) to be measured, fixing a strain gauge (4) to the surface of the object (2) to be measured with the adhesive, and fixing the strain gauge (4) with a high-temperature resistant film, so that the space between the strain gauge (4) and the object (2) to be measured is filled up with the adhesive; placing a high-temperature resistant pad (3) on the outer side of the strain gauge (4), so that pressure can be uniformly distributed on the strain gauge (4) by means of the high-temperature resistant pad (3), and the high-temperature resistant film is used to space the adhesive from and the high-temperature resistant pad (3) so as to prevent the high-temperature resistant pad (3) from coming into contact with the adhesive; placing a heating source on the outer side of the high-temperature resistant pad (3) for heating and curing the adhesive; heating for a period of time, turning off the heating source after the adhesive is cured, that is, after the strain gauge (4) is fixed, and cooling to room temperature; and removing the heating source, the high-temperature resistant pad (3) and the high-temperature resistant film.

IPC Classes  ?

• G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge

Abstract

Provided is a force sensor, comprising a first end portion (1), a second end portion (2), a parallel guiding mechanism (3), a beam (4) and a strain gage (5). The parallel guiding mechanism (3) is used for connecting the first end portion (1) to the second end portion (2). The beam (4) comprises a main beam (43), a first connecting part (41) for connecting the main beam (43) to the first end portion (1), and a second connecting part (42) for connecting the main beam (43) to the second end portion (2). The main beam (43) comprises a flexible wall (435) connected to the first connecting part (41) and a rigid wall (432) connected to the second connecting part (42), wherein the strain gage (5) is fixed on the flexible wall (435). The force sensor can be used for measuring a relatively small force.

IPC Classes  ?

• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges

Abstract

A digital load cell has a force measurement element, a power incentive module, a signal detection module, a microprocessor, a communication module, a current control module and a configuration control module. First configuration control information configures the signal detection module to use a corresponding detection mode to perform signal conversion. Second configuration control information configures the processor to use one or more corresponding kernels or processors for running. Third configuration control information configures the communication module to use a corresponding communication protocol, terminal matching and impedance control for communication. Fourth configuration control information configures the current control module to use the on/off, voltage values and current values of the power incentive module, the signal detection module, the microprocessor and the communication module. The configuration control module sends the first to fourth configuration control information according to a working mode selected by a user.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• H04W 84/18 - Self-organising networks, e.g. ad hoc networks or sensor networks
• G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge

Abstract

An analog sensor with digital compensation function includes a deformation part generating a deformation relating to a pressure sensed by the analog sensor; a strain gauge connected to the deformation part and generating a change in resistance relating to the deformation; a strain gauge bridge connected to the strain gauge and transferring the change in the resistance of the at least one strain gauge to output a first analog signal; and an analog-to-digital conversion module converting the first analog signal to a first digital signal, representative of weight. A signal processing and output circuit compensates the first digital signal and converts it into a second analog signal.

IPC Classes  ?

• G01G 3/18 - Temperature-compensating arrangements
• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
• G01L 19/04 - Means for compensating for effects of changes of temperature
• G01L 9/04 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers of resistance strain gauges
• G06J 1/00 - Hybrid computing arrangements
• G01L 19/00 - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
• G01L 9/00 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means

Abstract

A weighing sensor (100), comprising four resistance-type strain gauges (SG1, SG2, SG3, SG4), a digital/analogue conversion circuit and a signal processor (MP). The signal processor (MP) outputs a real time loading force value Fn and a real time status information matrix St. A weighing network (200), comprising a weighing sensor array (202) consisting of a plurality of the above weighing sensors (100), a collection device (204) collecting external information and a control terminal (206). A monitoring method for the weighing network (200), applied to the above weighing network (200). The control terminal (206) collects real time external information, and the real time loading force values Fn and the real time status information matrices St of the various weighing sensors (100) in real time; the real time external information, and the real time loading force values Fn and the real time status information matrices St of the various weighing sensors (100) are compared with data stored in a weighing process database, and the status of the weighing network (200) is monitored.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance

Abstract

A digital weighing sensor, comprising: a force-measuring element, a power excitation module, a signal detection module, a microprocessor, a communication module, a line current control module, and a configuration control module. The signal detection module may be configured by first configuration control information to use a corresponding detection mode to perform signal conversion. The processor may be configured by second configuration control information to use one or a plurality of corresponding cores or processors to run. The communication module may be configured by third configuration control information to use a corresponding communication protocol, terminal matching and impedance control to perform communication. The line current control module may configure the connection/disconnection, voltage values and current values of the power excitation module, the signal detection module, the microprocessor and the communication module according to fourth configuration control information. The configuration control module emits the first to fourth configuration control information according to a selected operating mode. Also provided is a multi-configuration technology-based digital weighing sensor smart network.

IPC Classes  ?

• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• H04W 84/18 - Self-organising networks, e.g. ad hoc networks or sensor networks

Abstract

The present invention relate to a bus network having a safety gate of a substantial safety isolation type. The bus network comprises a first region, a second region, and signal isolators. The first region has disposed therein a first bus and has distributed therein one or more first processing devices, one or more first transceivers, one or more first controllers, and one or more gateways. The second region has disposed therein a second bus and has distributed therein one or more second processing devices and one or more second transceivers. The signal isolators are disposed between the first region and the second region. An isolation device driving terminal and an output terminal on one side of the signal isolator are respectively connected to a transmitting terminal and a receiving terminal of a second controller. An output terminal and an isolation device driving terminal on the other side of the signal isolator are respectively connected to a transmitting terminal and a receiving terminal of a second transceiver.

IPC Classes  ?

• H04L 12/933 - Switch core, e.g. crossbar, shared memory or shared medium
• H04L 12/64 - Hybrid switching systems

Abstract

A CAN bus explosion proof node structure is disclosed which includes a physical parameter sensor, a physical parameter measurement circuit, a master controller, a data storage module, a communication interface module, and a power voltage and current limiting module. The master controller performs service processing of the digital signals, compares them with respective threshold levels to determine whether dangerous situations occur for the explosion proof node, and sends out an alarm when dangerous situations occur for the explosion proof node. The power voltage and current limiting module limits a maximum open circuit voltage and a maximum short circuit current of input power so that explosive gas and dust will not ignite when the nodes are in normal operation or experience failures.

IPC Classes  ?

• H02K 9/00 - Arrangements for cooling or ventilating
• H04L 12/00 - Data switching networks
• H02H 9/00 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
• H04L 12/40 - Bus networks

Abstract

The present invention relates to a load cell topology network comprising at least one multi-branch cable and a plurality of load cells. Each multi-branch cable comprises at least three connectors and one or more groups of signal lines; each group of signal lines comprise at least three branch signal lines, with one end of each branch signal line connected to at least three connectors described respectively and correspondingly, and the other end of each branch signal line connected to a common node, thereby realizing the interconnection of the same kinds of electrical signals between respective connectors; each connector is adapted to be connected to another multi-branch cable or a load cell. The plurality of load cells are electrically connected by the multi-branch cable to form a topology network.

IPC Classes  ?

• H01P 5/12 - Coupling devices having more than two ports
• G01G 23/00 - Auxiliary devices for weighing apparatus
• G01G 23/37 - Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting

Abstract

A load cell wireless kit as disclosed can include a load cell and a kit component removably attached to an outside of the load cell. Exemplary embodiments are free of cables and a junction box, and can provide a great convenience for use and save power consumption, without affecting normal system functions.

IPC Classes  ?

• H05K 7/14 - Mounting supporting structure in casing or on frame or rack
• H04L 23/00 - Apparatus or local circuits for telegraphic systems other than those covered by groups
• G01G 21/28 - FramesHousings
• G01G 23/37 - Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting
• H04L 29/08 - Transmission control procedure, e.g. data link level control procedure
• G01D 21/00 - Measuring or testing not otherwise provided for

Abstract

A measurement system (100) is constituted by a plurality of sensors (110, 120) coupled together via a bus (130). Each of the sensors (110, 120) is identical in physical structure and comprises a master system part (210, 310) and a slave system part (220, 320). The measurement system (100) comprises: one master sensor (110), wherein the master system part (210) of the master sensor (110) is activated, the mater sensor (110) is used to collect, aggregate, and analyze information form all the slave sensors (120) and/or from the master sensor (110) per se; and a plurality of slave sensors (120), wherein the master system part (210, 310) of each slave sensor (120) is dormant while the slave system part (220, 320) of each slave sensor (120) is activated, the slave sensor (120) is used to collect and press information and deliver the collected information to the master sensor (110), wherein when a fault occurs in the master sensor (110), one of the plurality of slave sensors (120) switches to a new master sensor. The measurement system has a low complexity, supports multi-machine hot back-up, and has strong tolerance to the environment.

IPC Classes  ?

• G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]

Abstract

An analog sensor (100, 500, 600, 700, 800, 900) with digital compensation function comprises: a deformation part (102) generating a deformation according to a pressure sensed by the analog sensor (100, 500, 600, 700, 800, 900), a strain gauge (104) connected to the deformation part (102) and generating a change in the resistance according to the deformation, a strain gauge bridge (106) connected to the strain gauge (104) and transferring the change in the resistance of the at least one strain gauge (104) to output a first analog signal, an analog-to-digital conversion module (108, 508, 708, 808, 908) connected to an output of the strain gauge bridge (106), receiving the first analog signal from the strain gauge bridge (106) and converting the first analog signal to a first digital signal, where the first analog signal is an analog signal representative of weight, an analog output port (116) for outputting a second analog signal, and a signal processing and output circuit (110, 510, 610, 710, 810, 910) connected between the output of the analog-to-digital conversion module (108) and the analog output port(116), compensating and converting the first digital signal into the second analog signal. The analog sensor (100, 500, 600, 700, 800, 900) may achieve high-accuracy compensation while keeping the interfaces of the analog weighing sensor to be simple.

IPC Classes  ?

• G01G 3/18 - Temperature-compensating arrangements

Abstract

A method is disclosed for detecting power interruption duration of an electronic device. The method can include establishing a curve model of linearly synthesized values of temperature sensor readings versus time; after power-on, acquiring each of the initial temperature values by respective temperature sensors mounted on the electronic device, and transmitting the temperature initial values to a microprocessor; calculating a linearly synthesized value of the temperature sensor readings of the electronic device according to a power-on duration for this time and a stored curve model, and storing the linearly synthesized value of the temperature sensor readings as a basis for calculating the power interruption duration thereafter. When the electronic device is powered on again after power interruption, a linearly synthesized value of the temperature sensor readings according to the power-on time for this time can be calculated, and used for calculating the power interruption duration thereafter.

IPC Classes  ?

• G01K 17/00 - Measuring quantity of heat
• G01R 21/00 - Arrangements for measuring electric power or power factor
• G01R 19/15 - Indicating the presence of current
• G04F 10/10 - Apparatus for measuring unknown time intervals by electric means by measuring electric or magnetic quantities changing in proportion to time
• G01K 13/00 - Thermometers specially adapted for specific purposes

Abstract

An autorotating metal detector installation structure, which comprises: a frame, which is provided with a guide groove; a castor structure, which is mounted at the installation bottom legs of the metal detector, and which has two roller wheels supported on a support surface of the frame and a guide wheel contacting tangentially with a guide groove of the frame and rolling therein; a rotation drive structure, which comprises a rotation drive element and a rotation connector, wherein the rotation connector connects the rotation drive element with the guide wheel, so as to convert the rectilinear motion of the rotation drive element into the rotational motion of the guide wheel. When detecting the products with high requirements on metal directivity, the autorotating metal detector installation structure of the present invention drives the metal detector to rotate automatically in a certain angular range, thereby avoiding the influences of the directivity of the metals within the product to the reliability of the detection, thus capable of obtaining a high-precision detection of the products which requires consistent detection of metal objects with high directivity.

IPC Classes  ?

• G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves

Abstract

An elastomer structure of a multi-range weighing sensor comprises a fixed part and a strain part. The strain part comprises at least two sensitive strain areas of different ranges arranged on an elastomer (2). The first sensitive strain area is provided with a first strain hole (6), and a first strain gage group (5) for measuring a first range load is fixed on the thin wall of the first strain hole (6). The second sensitive strain area is provided with a second strain hole (12), and a second strain gage group (11) for measuring a second range load is fixed on the thin wall of the second strain hole (12). A first notch (15) having a first overload gap α is arranged on a first overload beam (14) inside the second strain hole (12) or on the corresponding elastomer (2). The elastomer structure is reasonable, can achieve the measurement for both wide-range loads and small-range loads on the elastomer (2) and can be processed according to conventional manufacturing technologies, and moreover, the processing precision can be ensured without precision improvement.

IPC Classes  ?

• G01G 3/12 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing

Abstract

A CAN bus explosion-proof node structure (100), comprising a physical quantity parameter sensor (110), a physical quantity parameter measurement circuit (120), a main controller (130), a data storage module (140), a communication interface module (150), and a power source voltage-limiting and current-limiting module (160). The physical quantity parameter sensor (110) acquires one or a plurality of physical quantities and converts said physical quantities into electrical signals; the physical quantity parameter measurement circuit (120) converts the electrical signals of the various physical quantities into digital signals following filtering, amplification, signal conditioning, and analogue-to-digital conversion processing; the main controller (130) respectively compares the digital signals of the various physical quantities to corresponding threshold values in order to determine whether the explosion-proof node is at risk, and when the explosion-proof node is at risk, transmits alarm information; the data storage module (140) is used for storage of the threshold values corresponding to various physical quantities, the communication interface module (150) transmits processed digital signals; the power source voltage-limiting and current-limiting module (160) is connected to the physical quantity parameter measurement circuit (120), and inputs a power source, limiting the maximum open circuit voltage and maximum short circuit current. By limiting the voltage and current energy of the internal circuit within the node, the present CAN bus explosion-proof node structure ensures that both when working normally and when faults occur, dangerous explosive gases and dust mixtures in the environment cannot be ignited, thus improving intrinsic safety. Also disclosed is a CAN bus explosion-proof network.

IPC Classes  ?

• G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
• H04L 12/28 - Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

Abstract

The present invention relates to a bus network having an intrinsically secure isolated security barrier, comprising a first area, a second area, and signal isolators. The first area is provided therein with a first bus and has distributed one or multiple first processing devices, first transceivers, first processors, and gateways. The second area is provided therein with a second bus and has distributed one or multiple second processing devices and second transceivers. Optoelectronic isolators are provided between the first area and the second area. Optoelectronic device driving ends and output ends on one side of the optoelectronic isolators respectively are connected to transmitting ends and receiving ends of second controllers. Output ends and optoelectronic component driving ends on the other side of the optoelectronic isolators respectively are connected to transmitting ends and receiving ends of the second transceivers.

IPC Classes  ?

• H04L 12/40 - Bus networks

Abstract

An elastic body of a weighing sensor comprises a fixed part (2) and an adaptive part (3). The fixed part (2) comprises a printed plate mounting hole (4) on the elastic body and a printed plate (5) disposed in the printed plate mounting hole (4), the printed plate (5) being connected to a cable joint (1). The adaptive part (3) comprises an adaptive hole (8) on the elastic body and an adaptive sheet (7) fixed in the adaptive hole (8), and a sealing member fixed on the elastic body seals the adaptive hole (8), wherein an overload protection mechanism is disposed in the adaptive hole (8), and the overload protection mechanism has an overload gap. In another aspect, the fixed part (2) comprises the printed plate mounting hole (4) disposed on the elastic body, the adaptive part (3) comprises the adaptive hole (8) disposed on the elastic body and a group of adaptive sheets (7) fixed in the adaptive hole (8), and a crossed overload beam (6) is disposed in the adaptive hole (8). The elastic body is of a compact structure; by disposing the overload protection mechanism inside the elastic body, the overload protection is provided, and the use of the weighing sensor is not affected due to dust accumulation, thereby meeting the food safety requirements.

IPC Classes  ?

• G01G 21/00 - Details of weighing apparatus
• G01G 3/14 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• G01G 23/00 - Auxiliary devices for weighing apparatus