Abstract: 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.

Abstract: An optoelectronic monitoring device (1) with at least one light source (2) and at least one receiving element (4) which receives light from light source (2) that was reflected by an object. The receiving element determines the distance of the object. A testing unit (5-7) of the monitoring device checks the functionality of the receiving element (4) and modifies light received by the receiving element so that the receiving element (4) receives light which has been falsified by a predetermined or a known amount. A corresponding testing method is also described.

Abstract: A device for optoelectronic monitoring of an object (26) contains a transmitting unit (12) and a receiving unit (14) that are located in a housing (10) covered by a faceplate (16). The transmitting unit (12) emits light beams (24) in a structured illuminating pattern. The illuminating pattern of the illuminated object (26) is recorded on an image recorder (28) by the receiving unit (14). Soiling (38) on the faceplate (16) is indicated by recording the light beams (24) diffusely scattered at the faceplate (16) on the image recorder (28).

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to an optoelectronic sensor arrangement (1), with a plurality of optical transmitters (21, 22) positioned side by side in an optical transmitter strip (12), such that each optical transmitter (21, 22) transmits the light of a transmitted cone (?1, ?2) into a surveillance area (50), and with a plurality of optical receivers (31, 32) positioned side by side in an optical receiver strip (14), which optical receivers (31, 32) receive the light of a received cone (?1, ?2) from the surveillance area (50), where each receiver (31, 32) exhibits a laterally-resolving element (41, 42), such that each optical transmitter (21, 22) and optical receiver (31, 32) form an optical receiver/transmitter pair, and a control unit contains means for determining the optical incident point (L1, L1?, L2, L3) on one of the optical receivers (31, 32) of the transmitted cone (?1, ?2) of each optical transmitter (21, 22) and/or of a foreign light source (G1).

Abstract: 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.

Abstract: The invention 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.

Abstract: The invention relates to a process for monitoring the functioning and/or adjustment of an optoelectronic sensor arrangement (10) exhibiting at least two optical transmitters (S1, S2, S3), to each of which an optical receiver is assigned, such that each optical receiver (E1, E2, E3) is designed as a laterally-resolving optical receiver and such that each of the optical transmitters (S1, S2, S3) and the corresponding optical receivers (E1, E2, E3) are so positioned relative to each other that a light ray (L1a, L2a, L3a) emitted from the optical transmitter (S1, S2, S3) can be detected by the corresponding optical receiver (E1, E2, E3) after being reflected by a boundary surface (F), which process involves the following steps: a) detecting the current position-proportional reception values for each optical transmitter (S1, S2, S3) and corresponding optical receiver (E1, E2, E3), b) determining the current relative positions for the reception values of any two adjacent optical transmitters (S1, S2, S3), c) com

Abstract: An optoelectronic sensor for detecting objects in a monitored region which has light emitters and associated light receivers adjustably arranged relative to each other so that light emitted by the light emitter is directly received by the light receiver. The light emitter and the light receiver conform to normed requirements which define a normed region that is free of reflecting surfaces so that light emitted by the light emitter which passed beyond the normed region cannot be received by the light receiver due to a reflection of such light. In the normed region, an emitted light cone generated by the light emitter and a received light cone defined by the light receiver overlap within a normed opening angle. An evaluation unit interprets the interruption in the light directed to the light receiving element as a detection of an object in the monitored region.

Abstract: An optoelectronic monitoring device (1) with at least one light source (2) and at least one receiving element (4) which receives light from light source (2) that was reflected by an object. The receiving element determines the distance of the object. A testing unit (5-7) of the monitoring device checks the functionality of the receiving element (4) and modifies light received by the receiving element so that the receiving element (4) receives light which has been falsified by a predetermined or a known amount. A corresponding testing method is also described.

Abstract: 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.

Abstract: 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.

Abstract: An axial piston machine having a swashplate or an oblique axis which can be adjusted by means of servopistons and has a valve segment and an adjustment unit for the electrically proportional adjustment of the volumetric displacement. The adjustment unit comprises proportional magnets which can be activated electrically, and a control piston for controlling the oil pressure which moves the servopistons. The proportional magnets act on the control piston along a common tappet axis, a feedback device for feeding back the current swashplate or oblique-axis valve-segment position to the control piston being provided. The feedback device comprises spring levers 6, 6? which can pivot about an axis, the spring levers 6, 6? each being mounted on the pivot axis 5 with a bearing shell 15, which are each composed of two component shells which support the spring lever 6, 6? at separate locations on the pivot axis 5, and which each essentially enclose a half-space about the pivot axis 5.

Abstract: A device for optoelectronic monitoring of an object (26) contains a transmitting unit (12) and a receiving unit (14) that are located in a housing (10) covered by a faceplate (16). The transmitting unit (12) emits light beams (24) in a structured illuminating pattern. The illuminating pattern of the illuminated object (26) is recorded on an image recorder (28) by the receiving unit (14). Soiling (38) on the faceplate (16) is indicated by recording the light beams (24) diffusely scattered at the faceplate (16) on the image recorder (28).

Abstract: Apparatus for monitoring a dangerous zone 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 applied to the optical unit of the other picture-taking unit can be viewed by the first-named picture-taking unit. A processing and switching unit includes a comparison unit for comparing a picture taken by a picture-taking unit 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.

Abstract: An axial piston machine having a swash plate or oblique axis which can be adjusted by means of servopistons and has a valve segment and an adjustment unit for the electrically proportional adjustment of the volumetric displacement, the adjustment unit comprising proportional magnets which can be activated electrically, and a control piston for controlling the oil pressure which moves the servopistons, the proportional magnets acting on this control piston along a common tappet axis. A feedback device for feeding back the current swash plate or oblique axis valve segment position is provided. The feedback device comprises spring levers and a pointer which can be pivoted about an axis, the pointer which is embodied as a two-armed lever engaging in the control piston on one side of the pivot axis, and between the spring levers on the other side.

Abstract: The invention relates to an apparatus and a method for the detection of an object moving in the monitored region of a camera, wherein measured values are compared with reference values and an object detection reaction is triggered when the measured value deviates in a predetermined manner from the reference value. In this respect, both the measured values and the reference values are derived from differences which exist between at least two different image regions.

Abstract: 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.

Abstract: 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.