An ultrasonic sensor, which is installed on a test device, includes a shell, one end is open, the other end is closed surface; a cover sheet, bonded to the open end of the shell; a copper foil, a lower surface of the copper foil is bonded to an inner bottom surface of the closed surface of the shell; a piezoelectric chip, a lower surface of the piezoelectric chip is bonded to a upper surface of the copper foil, and when the test device vibrates, the piezoelectric chip converts a vibration signal into a voltage response signal; a cable, a positive electrode is welded on a upper surface of the piezoelectric chip, and a negative electrode is welded on the upper surface of the copper foil, configured to connect to an external detection device and transmit the voltage response signal to the external detection device.
G01H 11/08 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
G01R 31/12 - Testing dielectric strength or breakdown voltage
H10N 30/03 - Assembling devices that include piezoelectric or electrostrictive parts
H10N 30/87 - Electrodes or interconnections, e.g. leads or terminals
A personnel contact history recording method executable by an electronic device, comprising: scanning surrounding devices via Bluetooth by a preset time interval; requesting a device name and an IMSI of the scanned device, when at least one device is scanned, and generating a surrounding phone list according to the scanned devices; comparing the surrounding phone list with a daily list to determine whether the devices recording in the surrounding phone list are recorded in the daily list; and, if at least one device recording in the surrounding phone list is recorded in the daily list, sending a warning message to the electronic device and a server.
H04M 1/2757 - Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time using static electronic memories, e.g. chips providing data content by data transmission, e.g. downloading
H04M 1/27453 - Directories allowing storage of additional subscriber data, e.g. metadata
H04M 1/275 - Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time using static electronic memories, e.g. chips implemented by means of portable electronic directories
H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
3.
Method for data processing, system and computer readable storage medium
In a method of data processing executed in a gateway, a communication protocol matched with a target device is selected from a device driver database of the gateway; a connection with the target device is established according to the matched communication protocol; a sensing data of the target device is acquired; a data cleaning processing is performed on the acquired sensing data; and the processed data is shared to a third-party platform.
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
H04L 41/06 - Management of faults, events, alarms or notifications
A method providing guidance to a vehicle for parking includes: obtaining information of potential parking space. Information of the parking space includes likelihood of finding unoccupied parking space and navigating to the parking space according to the information of parking space. The information of the parking space guides a driver to quickly find the parking space, thereby reducing parking time, improving parking space utilization, and efficiency of road traffic management. Calculating the likelihood of finding an unoccupied space is of great assistance to a driver.
G08G 1/14 - Traffic control systems for road vehicles indicating individual free spaces in parking areas
G07B 15/02 - Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points taking into account a variable factor such as distance or time, e.g. for passenger transport, parking systems or car rental systems
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06K 9/46 - Extraction of features or characteristics of the image
G06N 7/00 - Computing arrangements based on specific mathematical models
G08G 1/01 - Detecting movement of traffic to be counted or controlled
H04N 5/235 - Circuitry for compensating for variation in the brightness of the object
5.
Efficiently collecting and distributing multicast data
A more efficient method of data collecting using multicast instead of individual slave-by-slave requests for data defines a multicast address through a master station. Slave stations are divided into feature groups according to their feature value and a mapping relationship table between the multicast addresses and the feature groups is established. Data request frames from the master station to the slave stations include a destination address which is parsed by all the slave stations, and if the destination address is the same as the multicast address in the mapping relationship table, the slave stations in the feature group associated with the destination address transmit data in response to the master station, the data request being discarded by other slave stations which are not associated.
A method and system for detecting pin misalignment of ICs when being inserted into IC sockets includes a pressure sensing unit obtaining information as to pin insertion and pressure exerted by the pin and outputting the sensed information. A microprocessor receives the sensed information and obtains a pressure value correspondingly. Any misalignment of the pin is determined according to the pressure value so calculated.
A method for optimizing camera layout for areas requiring surveillance comprises constructing a three-dimensional model of a scene subject to surveillance and related scene variables, configuring a computation range, constructing a plurality of simulation scenes using the three-dimensional model and the scene variables and recording the framing of pixels in the plurality of simulation scenes by a plurality of cameras according to the computation range, and further calculating the number of pixels required for visibility of an object to be recognized from the recorded framing of pixels. A camera set is selected from the plurality of cameras according to a convergence requirement, and a computation as to camera optimization layout is performed with the camera set to obtain one or more layout schemes.
A method for ensuring safety of humans within operating area or in close proximity to an automatic apparatus is applied in and by a control apparatus. The control apparatus is coupled to one or more cameras arranged around the operating area of the automatic apparatus. The control apparatus uses deep learning techniques to analyze images captured by the cameras to determine whether there is a person in the operating area and powers off the automatic apparatus if any person is deemed present.
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