摘要:
An optoelectronic sensor (10) for monitoring a working area (42) is provided, the working area (42) being located within a detection area (20) of the sensor (10) and in a first distance from the sensor (10), wherein the sensor (10) comprises an illumination unit (22) with a light source (24) for at least partially illuminating the working area (42), and an object detection unit (30) for detecting forbidden objects in the working area (42), wherein an illumination control (28) of the illumination unit (22) is configured to, during a startup period, initially activate the illumination unit (28) with a lower power such that a provisional working area (40, 40a-c) in a second distance from the sensor (10) less than the first distance is illuminated at most with a predetermined maximum light output; test whether there is a forbidden object intrusion into the provisional working area (40, 40a-c); and if no forbidden object intrusion is detected, activate the illumination unit (28) with a higher power such that the working area (42) is illuminated at most with the predetermined maximum light output. The illumination control (28) comprises a short range object detection unit (39) configured to test the provisional working area (40, 40a-c) in a different way than the object detection unit (30) tests the working area (42).
摘要:
The invention relates to an apparatus, in particular to a bending apparatus, including at least one movable apparatus part; an operating device for the operation of the apparatus, with at least one first signal for the actuation of the apparatus and one second signal for the stopping of the apparatus being able to be triggered via the operating device; a protection device for the monitoring of a protected zone of the apparatus; and a device for the selective adaptation of the protected zone before the actuation of the apparatus, with the device for the adaptation of the protected zone being able to be acted on by means of a third signal of the operating device. Alternatively, the device for the selective adaptation of the protected zone can include a voice input device.
摘要:
A potentially dangerous machine is secured to protect against injuries and has first and second tool parts that define an opening gap between them. At least the first tool part is movable relative to the second tool part in a movement direction during an operating cycle for deforming a workpiece between them by reducing a size of the opening gap in the movement direction. The protected zone precedes the first tool part and extends over at least a portion of the opening gap in the direction of relative movement. The protected zone is monitored with an optoelectronic sensor, and a danger signal is generated in response to a breach of the protected zone. When the size of the opening gap in the movement direction becomes smaller than the protected zone, the size of the protected zone is correspondingly reduced until during subsequent closing movements of the first tool part substantially the entire opening gap is within the protected zone.
摘要:
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.
摘要:
The invention relates to a method for securing a machine tool comprising a first tool part that carries out work movements in the direction of a second tool part in order thereby to carry out a machining process on a workpiece, wherein an optoelectronic sensor monitors a three-dimensional protected field between the tool parts in that light is transmitted along an open gap formed between the tool parts by means of a transmitter device and is detected by means of a receiver device which includes a matrix of light-sensitive elements, wherein the first tool part is stopped if individual light-sensitive elements or specific groups of the light-sensitive elements do not receive any light. In the method in accordance with the invention, relative positions between individual workpiece areas or measured values related to individual workpiece areas are determined from the signals delivered by the light-sensitive elements. The invention furthermore relates to an optoelectronic sensor by means of which the named method can be carried out.
摘要:
The invention relates to a cell for an ophthalmic lens, for testing the latter with an optical inspection system, said cell comprising a hollow space (11, 31) which is filled with a liquid and has an axis (12, 32) coinciding, in the test position, with the optical axis of an inspection system and, in the test position of the cell, is delimited from above by a viewing glass (13, 33) for the optical test and has, underneath the viewing glass, a test trough (14, 34) for the ophthalmic lens. Between viewing glass (13, 33) and test trough (14, 34), at least one insertion channel (15, 35) opens into the hollow space (11, 31), the ophthalmic lens being able to be inserted into the hollow space (11, 31) through the outer insertion opening (16, 36) of said insertion channel (15, 35)
摘要:
A method and device for monitoring a monitored area with at least one camera and in which the monitored area has a contrast strip with at least one bright partial strip and/or at least one dark partial strip that extend in the longitudinal direction. A control unit recognizes the obscuration of a minimum area of the bright partial strip and/or the dark partial strip as the entry of an object into the monitored area. The control unit detects from an image of the camera the obscuration in columns which are oriented transverse to the contrast strip. A violation of the signature of the contrast strip is recognized when a first minimum number of bright pixels between the bright beginning and the bright end of the bright partial strip and/or a second minimum number of dark pixels between the dark beginning and the dark end of the dark partial strip in the respective columns, and the obscuration of the minimum area as the obscuration of a predetermined number of side-by-side columns have been detected.
摘要:
In a method for the monitoring of a monitored zone next to and/or in an apparatus having at least one driven movable part, video images are used which were detected in time sequence by at least two video cameras whose fields of view overlap at least partly in an overlap region in the monitored zone. On the basis of the first video images detected by a first one of the video cameras, a first recognition and/or tracking of virtual objects is carried out and, on the basis of the second video images detected by a second one of the video cameras, a second recognition and/or tracking of virtual objects is carried out, the virtual objects corresponding to real objects at least in the overlap region. For the classification and/or determination of the position and/or the movement of at least one real object in the overlap region, virtual objects corresponding to the real object from the first and second virtual object recognition and/or tracking processes are determined and data determined in each case for both virtual objects on their virtual object recognition and/or tracking are evaluated. At least one monitoring signal is formed in dependence on the evaluation.
摘要:
A method of controlling at least one safety-specific function of a machine. The method includes monitoring a monitoring region with at least one location-resolving and time-resolving sensor, where the monitoring region includes a safety boundary which separates off a danger region and defines a safe distance from a danger zone of the machine. The method also includes detecting at least one of a position, a movement direction and a movement speed of an object. The method also includes establishing a position of the safety boundary in a variable manner depending on the at least one of a detected position, movement direction and movement speed of the object. The method also includes triggering the safety-specific function of the machine when entry into the danger region by the object is detected. An apparatus corresponding to the method is also described.
摘要:
A distance-measuring optoelectronic sensor for the monitoring of a working zone is provided which is located within a detection zone of the sensor and at a first distance from the sensor, wherein the sensor has a lighting unit having a light source to illuminate the working zone at least partly as well as an object detection unit by means of which unauthorized objects in the working zone can be detected. In this respect, an illumination control is designed, in a switching-on phase, first to activate the lighting unit with a lower power so that a provisional working zone at a second distance from the sensor less than the first distance is illuminated with at most a preset maximum power; to check by means of the object detection unit whether an unauthorized object intrusion is taking place into the provisional working zone; and if no unauthorized object intrusion is recognized, to activate the lighting unit at a higher power so that the working zone is illuminated with at most the preset maximum power.