Sick Ag

Martin Wuestefeld

Georg Plasberg

Christof J Meyer

Ralf Friedrich

Olaf Henkel

Ingolf Braune

Daniel Rieger

Matthias Elbert

Claus Melder

Christoph Meyer

Guenter Bockel

Guenter Fetzer

Guenter Boeckel

Heiner Juers

Heike Haarmann

Gehard Mutter

An optoelectronic sensor and method for detecting an object in a three-dimensional monitored region uses a plurality of video sensors. Each sensor has a multiplicity of light-receiving elements that are configured to take a pixel picture of the monitored space, and a control unit identifies an object in the monitored space from video data of the pixel picture. Each video sensor has at least one pixel line that is formed by light-receiving elements. The video sensors are spaced from each other so that each sensor monitors an associated plane of the monitored space.

Optoelectronic multiplane sensor and method for monitoring objects

Monitoring the functioning and/or adjustment of an optoelectronic sensor arrangement () exhibiting at least two optical transmitters (S, S, S), to each of which a laterally-resolving optical receiver is assigned, such that each of the optical transmitters (S, S, S) and the corresponding optical receivers (E, E, E) are so positioned relative to each other that a light ray (L, L, L) emitted from the optical transmitter (S, S, S) can be detected by the corresponding optical receiver (E, E, E) after being reflected by a boundary surface (F), which process involves the following steps:

Process for monitoring the functioning and/or adjustment of an optoelectronic sensor arrangement, as well as an optoelectronic sensor arrangement

An optoelectronic sensor arrangement (), with a plurality of optical transmitters () positioned side by side in an optical transmitter strip (), such that each optical transmitter () transmits the light of a transmitted cone (&#x3b1;) into a surveillance area (), and with a plurality of optical receivers () positioned side by side in an optical receiver strip (), which optical receivers () receive the light of a received cone (&#x3b2;) from the surveillance area (), where each receiver ()comprises a spatially-resolving element (), such that each optical transmitter () and optical receiver () form an optical receiver/transmitter pair, and a control unit contains means for determining the optical incident point (L, L', L, L) on one of the optical receivers () of the transmitted cone (&#x3b1;) of each optical transmitter () and/or of a foreign light source (G).

Optoelectronic sensor arrangement and process for monitoring a surveillance area

The disclosure relates to a safety switching device for a hazardous area defined by motor-driven components, the device being switchable into at least two control stages, wherein in a first control stage at least some of the motor-driven components can be switched into a state of reduced risk potential and in at least one second control stage at least some of the motor-driven components can be shut off, and wherein the safety switching device comprises an apparatus for determining the position of the safety switching device inside the hazardous area.

Safety switching device and method for monitoring a hazardous area defined by motor-driven components

An optoelectronic monitoring device () with at least one light source () and at least one receiving element () which receives light from light source () that was reflected by an object. The receiving element determines the distance of the object. A testing unit (-) of the monitoring device checks the functionality of the receiving element () and modifies light received by the receiving element so that the receiving element () receives light which has been falsified by a predetermined or a known amount. A corresponding testing method is also described.

Optoelectronic monitor including dynamic testing unit

A device for optoelectronic monitoring of an object () contains a transmitting unit () and a receiving unit () that are located in a housing () covered by a faceplate (). The transmitting unit () emits light beams () in a structured illuminating pattern. The illuminating pattern of the illuminated object () is recorded on an image recorder () by the receiving unit (). Soiling () on the faceplate () is indicated by recording the light beams () diffusely scattered at the faceplate () on the image recorder ().

Device for optoelectronic monitoring of objects and detecting of light beams scattered at a faceplate

An optoelectronic protective device for providing switching signals when an unauthorized object is present in a passageway or an opening through a wall. A light source illuminates the opening, and a camera forms a picture of at least one of the wall surfaces defining the opening. A camera forms a picture of at least one of the wall surfaces and directs it onto a position resolving light receiver that generates picture signals for evaluation to determine if an unauthorized project is in the opening. The light source, the light receiver, the camera, as well as a control unit, are mounted in a housing that is configured to be secured to at least one of the wall surfaces of the opening so that it extends only negligibly into the opening, and the light source illuminates a spatial angle and the camera has an angular field of view that are sufficiently large so that objects having a predetermined minimum size present in the opening are reliably detected.

Optoelectronic protection device

Apparatus with an optical system for monitoring a protected field has at least two opposing optical units arranged so that the protected field is between them. Each optical unit includes a picture-taking unit and a processing and switching unit that is operatively connected with the picture-taking unit for generating a danger signal. A marking is applied to each optical unit, and each picture-taking unit is arranged so that the marking on an opposite side of the protected field can be viewed by the first-named picture-taking unit. A processing and switching unit includes a comparison unit for comparing a picture with a reference picture. Each optical unit further has at least one lighting unit for illuminating the oppositely positioned marking on the oppositely positioned optical unit. The picture-taking unit, the markings and the lighting units are arranged in mutual alignment and on a common housing.

Apparatus for securing a dangerous zone

A light grid which has a housing made from an extruded profile. An electronic component plate is movably insertable into the interior of the housing and carries the optical components of an emitter unit or a receiver unit, respectively. The housing has a support plate and an intermediate web which connect spaced-apart side walls of the profile and include openings. The support plate also has openings into which corresponding optical function elements are inserted. The openings in the intermediate webs serve as apertures. To precisely align the component plate with the optoelectronic components thereon relative to the housing, positioning pins are inserted through openings in the support plate and the intermediate web and which further engage locating holes in the component plate.

Light grid with housing

A light barrier or light grid which has at least one light emitter arranged in a first housing and at least one associated light receiver arranged in a second housing. At least one emitter of visible alignment light installed in the first or the second housing generates one or more alignment light beams which is used to geometrically orient the light emitter relative to the opposite light receiver. For optically aligning the two housings, at least one alignment mechanism is present in the housing which receives the alignment beam. The alignment mechanism has at least one surface which optically deflects the alignment beam towards a target plane.

Light barrier or light grid with alignment mechanism

A strip-like housing of a light grid has two side walls that extend over its entire housing length and that are joined together by cross braces. The cross braces form a honeycomb structure, in which the transmitting and receiving elements of the light grid are installed.

Light barrier

The invention relates to an optoelectronic monitoring device for the detection of objects intruding into a monitored zone comprising at least one transmitter, in particular a light grid, arranged at an end of the monitored zone and having a group of transmission elements spaced apart from one another and each transmitting electromagnetic radiation into the monitored zone, at least one reflector arranged at an end of the monitored zone opposite the transmitter for radiation transmitted by the transmission elements, at least one receiver which has at least one spatially resolving reception element for radiation reflected by the reflector, and an evaluation device coupled with the reception element, wherein the transmitter, the reflector and the receiver are made and arranged such that, during the monitoring operation, at least a part of the group of transmission elements comprising a plurality of transmission elements is imaged on the reception element by means of the reflector and a check is made by means of the evaluation device as to whether a pattern on the reception element formed by the imaged transmission elements deviates from an expected image of the transmission elements. The invention further relates to a method of detecting objects intruding into a monitored zone.

Optoelectronic monitoring device

An opto-electronic apparatus for the monitoring of a protection area which has at least one protection device, which works in a non-contact manner, is described. The protection device, which works in a non-contact manner, has an evaluation unit for the generation of an object detection signal on the intrusion of an object into the protection area. An image detection unit is coupled to the protection device, which works in a non-contact manner, for the detection of an areal or spatial image detection area, with a secondary monitoring area disposed close to the protection area, but outside the protection area, being detected by the image detection unit. The protection device, which works in a non-contact manner, is controllable by the image detection unit.

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Sexau, Germany

Martin Wuestefeld