Abrégé

A method and a sensor arrangement for monitoring a protective field on a system is shown and described. The protective field is formed by a light grid. The light grid is created by a plurality of light beams. When an object enters the protective field, the protective field is divided into a first, a second and a tolerance range, wherein the second range is defined by all but the outermost light beams interrupted by the object and a first range is present at all times. After release of an interrupted light beam in the second range, a shutdown signal is generated if not all light beams in the protective field are free after the predefined first time period.

Classes IPC  ?

• G01V 8/20 - Détection, p. ex. en utilisant des barrières de lumière en utilisant plusieurs émetteurs ou récepteurs
• F16P 3/14 - Dispositifs de sécurité agissant en conjonction avec la commande ou le fonctionnement d'une machineCommandes exigeant l'emploi simultané de plusieurs parties du corps humain avec dispositifs, p. ex. des éléments sensibles, qui agissent sur la commande ou le fonctionnement de la machine lorsqu'une partie du corps humain se trouve dans ou près de la zone de danger les dispositifs étant des cellules photo-électriques ou d'autres dispositifs sensibles sans contact mécanique

Abrégé

A device and a method for detecting an actuator by sonicating the actuator with sound waves through a sensor. The device is used in particular in a safety application. The sensor and actuator can be moved relative to each other. The sensor includes a sound wave transmitter, a sound wave receiver and a computing unit. The sound wave transmitter is designed to send sound waves in the direction of the actuator. The sound wave receiver, in turn, is designed to pick up the sound waves reflected by the actuator and convert them into an analog signal. The computing unit converts the analog signal into a digital signal and detects the actuator by comparing it with a reference signal.

Classes IPC  ?

• G01S 7/539 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible
• G01S 7/524 - Émetteurs
• G01S 7/527 - Extraction des signaux d'écho désirés
• G01S 7/53 - Moyens pour transformer les coordonnées ou pour évaluer les données, p. ex. utilisant des calculateurs
• G01S 15/10 - Systèmes pour mesurer la distance uniquement utilisant la transmission de trains discontinus d'ondes modulées par impulsions
• H03K 17/945 - Commutateurs de proximité

Abrégé

The invention relates to a photoelectric sensor, in particular a light curtain, comprising an elongate housing and an optical module that is arranged in the housing. Transmitting and/or receiving elements are arranged, spaced apart from one another, on the optical module, and the optical module is in contact with the housing via contact points, the contact points being flat. The optical module and the housing comprise plastics materials. According to the invention, at least one part of the contact points is formed as weld connections, wherein the housing forms a welded connection with the optical module.

Classes IPC  ?

• G01V 8/20 - Détection, p. ex. en utilisant des barrières de lumière en utilisant plusieurs émetteurs ou récepteurs

Abrégé

An electromagnetic double-armature relay with an excitation coil comprises a first yoke and a second yoke, which are arranged on the excitation coil. The first leg of the first yoke serves as a support for a first armature and the first leg of the second yoke serves as a support for a second armature. The double-armature relay has a first comb which cooperates with the first armature, and a second comb cooperates with the second armature. In addition, the double-armature relay has at least two contact bridges, each of which is detachably arranged with a first end in the first comb and the second end in the second comb and comprises two contact rivets oriented in opposite directions, and fixed contacts which are arranged opposite the contact rivets of the contact bridge. The arrangement of the two yokes and armatures are such that the two combs perform opposing translational movements.

Classes IPC  ?

• H01H 50/36 - Éléments immobiles de circuit magnétique, p. ex. culasse
• H01H 50/54 - Dispositions de contact
• H01H 50/44 - Bobines ou enroulements d'excitation
• H01H 50/24 - Éléments rotatifs ou basculants à l'extérieur de la bobine

Abrégé

A method for operating a photoelectric barrier as well as a photoelectric barrier with at least one first and one second optoelectronic machine guard. The first optoelectronic machine guard has a first transmitter and the second optoelectronic machine guard has a second transmitter and receiver unit. The transmitters of the first optoelectronic machine guard are successively activated during a run of a first cycle so as to emit a single light pulse, and the transmitters of the second optoelectronic machine guard are successively activated during a run of a second cycle so as to emit a single light pulse. The cycles occur substantially simultaneously. A duration of the first cycle is lengthened or shortened by the duration of a first phase offset ΔA and that the duration of the second cycle is lengthened or shortened by the duration of a second phase offset ΔB.

Classes IPC  ?

• G01V 8/20 - Détection, p. ex. en utilisant des barrières de lumière en utilisant plusieurs émetteurs ou récepteurs
• F16P 3/14 - Dispositifs de sécurité agissant en conjonction avec la commande ou le fonctionnement d'une machineCommandes exigeant l'emploi simultané de plusieurs parties du corps humain avec dispositifs, p. ex. des éléments sensibles, qui agissent sur la commande ou le fonctionnement de la machine lorsqu'une partie du corps humain se trouve dans ou près de la zone de danger les dispositifs étant des cellules photo-électriques ou d'autres dispositifs sensibles sans contact mécanique

Abrégé

A device includes a sensor and an actuator. The sensor has a receiving circuit with a sensor and a detector, as well as a computer connected to the detector. The sensor cooperates with the actuator to generate a first receiving circuit signal during a normal operation when a switching distance between the sensor and the actuator is undershot. The detector generates a first output signal as a function of the first receiving circuit signal, and to transmit transmits the first output signal to the computer. The receiving circuit includes a signal emulator and a switch-over element. The signal emulator generates a second receiving circuit signal during a test operation. The detector generates a second output signal as a function of the second receiving circuit signal and transmits the second output signal to the computer. The device can repeatedly switch between normal operation and test operation.

Classes IPC  ?

• G08B 21/00 - Alarmes réagissant à une seule condition particulière, indésirable ou anormale, et non prévues ailleurs
• E05B 17/22 - Moyens de fonctionnement ou de commande d'accessoires de serrures ou dispositifs d'immobilisation, c.-à-d. autres que les moyens d'immobilisation, p. ex. interrupteurs, indicateurs
• G08B 21/18 - Alarmes de situation
• E05B 47/00 - Fonctionnement ou commande des serrures ou autres dispositifs d'immobilisation par des moyens électriques ou magnétiques

Abrégé

The invention relates to a relay, having an electromagnetic drive with a field coil arranged around an iron core which defines a plane, and a yoke. The electromagnetic drive works together with a movable armature which can switch a movable electrical contact via an actuating arrangement. The relay is accommodated in a housing, wherein an intermediate base and/or partition is included between the electromagnetic drive and the contact. The electromagnetic drive is arranged on one side of the partition, and the movable electrical contact is arranged on the other side of the partition. The partition has an opening through which the mechanical actuation of the contact is carried out. Because the armature is pivotable about an axis of rotation perpendicular to the plane of the iron core, the relay can have a lower constructed height than a conventional relay.

Classes IPC  ?

• H01H 3/00 - Mécanismes pour actionner les contacts
• H01H 50/24 - Éléments rotatifs ou basculants à l'extérieur de la bobine
• H01H 50/28 - Éléments mobiles par flexion d'une lame ou d'une tige
• H01H 50/34 - Moyens de réglage des limites de mouvementMoyens mécaniques de réglage de la force de retour
• H01H 50/36 - Éléments immobiles de circuit magnétique, p. ex. culasse
• H01H 50/44 - Bobines ou enroulements d'excitation
• H01H 50/54 - Dispositions de contact

Produits et services

Electromagnetic and electronic signalling, controlling, regulating, safety and checking apparatus; relays, especially, especially safety relays; relays with forcibly guided (mechanically linked) contacts; software. Technical advice and support, development of electromechanical and electric components and devices.

Produits et services

Scientific apparatus and instruments, surveying, optical, measuring, signalling, control and checking (supervision) apparatus and instruments, in particular optical, electronic, opto-electronic, photo-electric and acoustic-electric apparatus; opto-electronic apparatus and sensors for safeguarding and monitoring room areas, danger zones and danger areas; light barriers, light curtains working in the infra-red, visual and ultra-violet spectrum; apparatus for the automatic detection of objects in a predetermined space and for the automatic inspection of materials or objects with respect to their dimensions and to their surface quality, respectively; opto-electronic sensors; apparatus for the detection of the position, orientation and shape of objects; electrical and electronic parts; light control devices; dusk-dawn switches. Assembly, installation, calibration, maintenance and repair of electronic and opto-electronic apparatus and security devices, in particular of light barriers and of other sensors as well as of their components and accessories. Technical advice and support; design and manufacture of electrical, electronic and opto-electronic parts, sensors and devices.