Abstract: The invention relates to an optoelectronic safety device with a light transmitter (14), a light receiver (30) for receiving received light beams (26) from reflections on at least one object (24) in the monitored region (22), an evaluation unit (32) for evaluating the received signals and for outputting a safety signal as a function of the received signals, the evaluation unit (32) comprising a standard multicore processor which is formed on only one semiconductor substrate and has at least two CPUs (44, 46), the standard multi-core processor (42) not being a dedicated safety module and the evaluation being carried out redundantly on both CPUs (44 and 46) of the computing unit (42), and the evaluation unit (32) having a watchdog controller (50) which monitors the function of the computing unit (42), the watchdog controller (50) being able to cause the evaluation unit (32) to output the safety signal independently of the computing unit (42).

Abstract: A safety laser scanner for detecting objects in a monitored zone having a light transmitter for transmitting a light beam into the monitored zone; having a light receiver for generating a received signal from the light beam remitted by the objects; having a rotatable deflection unit for a periodic deflection of the light beam to scan the monitored zone in the course of the movement; having an internal reference target that reflects the transmitted light beam within the safety laser scanner to the light receiver to generate a reference signal; and having a control and evaluation unit that is configured to detect objects with reference to the received signal and to check the operability of the safety laser scanner with reference to the reference signal, The control and evaluation unit is here configured to change the sensitivity of the detection in dependence on the reference signal.

Abstract: A method of operating a monitoring sensor comprising a light transmitter; a light receiver; and a deflection unit is described, with the method comprising the steps: a) detecting a respective detected signal that comprises a time curve of a reception signal received for an angle of rotation; b) determining the number of reception light pulses in the detected signal; c) generating a detection signal that comprises information on the determined position of an object, wherein checks are made in accordance with first, second and third test conditions, and with the first test condition being checked in a first test step, and one of the second and third test conditions being checked in possibly performed second and/or third test steps respectively.

Abstract: A sensor is provided for the detection of objects in a monitored zone that has at least one light transmitter for transmitting a plurality of mutually separated light beams, at least one light receiver for generating a respective received signal from the light beams remitted in the monitored zone, a movable deflection unit with whose aid the transmitted light beams are periodically guided through the monitored zone to respectively scan a scanning layer in the course of the movement of the scanning unit by the separated light beams, and a control and evaluation unit that is configured to acquire information on the objects in the monitored zone from the respective received signal. The presence of a safety-relevant object is determined per scanning layer and a decision whether a safety-directed response is triggered is made by a common evaluation of the presence of a safety-relevant object determined per scanning layer.

Abstract: The invention relates to an optoelectronic safety device with a light transmitter (14), a light receiver (30) for receiving received light beams (26) from reflections on at least one object (24) in the monitored region (22), an evaluation unit (32) for evaluating the received signals and for outputting a safety signal as a function of the received signals, the evaluation unit (32) comprising a standard multicore processor which is formed on only one semiconductor substrate and has at least two CPUs (44, 46), the standard multi-core processor (42) not being a dedicated safety module and the evaluation being carried out redundantly on both CPUs (44 and 46) of the computing unit (42), and the evaluation unit (32) having a watchdog controller (50) which monitors the function of the computing unit (42), the watchdog controller (50) being able to cause the evaluation unit (32) to output the safety signal independently of the computing unit (42).

Abstract: An optoelectronic sensor for detecting objects in a monitoring area, the sensor comprising a light transmitter for transmitting a scanning beam, a movable deflection unit for periodically scanning the monitoring area with the scanning beam, a light receiver for generating a received signal from the scanning beam remitted by the objects, a front window, and a control and evaluation unit configured to obtain information about the objects in the monitoring area from the received signal and to detect impaired light transmissivity of the front window in a front window monitoring that evaluates a front window reflection that is generated at the front window by the scanning beam, wherein the control and evaluation unit is further configured to increase the sensitivity of the detection for the front window monitoring.

Abstract: A distance-measuring optoelectronic sensor (10) uses two sampling memories for detection of objects in a monitoring zone (20). The sensor (10) has a light transmitter (12) for transmitting a transmission light pulse (16) into the monitoring area (20), a light receiver (26) for generating a reception signal from the light pulse (22) remitted by objects in the monitoring area (20), a control and evaluation unit (32) configured to determine a reception point in time from the reception signal and the distance of the object by means of a light time of flight method, and a first and second sampling memory (34a, 34b) having a plurality of memory cells each for storing a section of the reception signal. Partially overlapping recording regions are used, with each alternately recording a reception signal for a longer duration than a time interval between two successive transmission light pulses (16).

Abstract: The present invention relates to a monitoring sensor for the spatially resolved detection of objects in a monitored zone in accordance with the principle of triangulation, comprising a light transmitter for transmitting transmitted light into the monitored zone, wherein the light transmitter comprises a light source and a transmission optics that has an optical axis; a light receiver that has a plurality of receiver elements for receiving light from the monitored zone that is remitted by an object to be detected; and a reception optics arranged upstream of the light receiver. The invention further relates to a floor-bound vehicle having a monitoring sensor.

Abstract: A safety laser scanner for detecting objects in a monitored zone having a light transmitter for transmitting a light beam into the monitored zone; having a light receiver for generating a received signal from the light beam remitted by the objects; having a rotatable deflection unit for a periodic deflection of the light beam to scan the monitored zone in the course of the movement; having an internal reference target that reflects the transmitted light beam within the safety laser scanner to the light receiver to generate a reference signal; and having a control and evaluation unit that is configured to detect objects with reference to the received signal and to check the operability of the safety laser scanner with reference to the reference signal, The control and evaluation unit is here configured to change the sensitivity of the detection in dependence on the reference signal.

Abstract: The invention relates to an optoelectronic sensor for monitoring a monitored zone. The sensor comprises a main light transmitter for transmitting sensing light signals that propagate through a protective screen into the monitored zone; a main light receiver for receiving light that emanates from the monitored zone; and a control unit for controlling the sensor. The sensor is configured in this respect to carry out a contamination recognition in which the degree of contamination of the protective screen is determined by means of a measured contamination value. The sensor in accordance with the invention is characterized in that the control unit is adapted to recognize the approach of a hand and/or of a finger toward the protective screen with reference to the contamination recognition and to output an action signal on the recognition of the hand and/or of the finger.

Abstract: The present invention relates to a monitoring sensor for the spatially resolved detection of objects in a monitored zone in accordance with the principle of triangulation, comprising a light transmitter for transmitting transmitted light into the monitored zone, wherein the light transmitter comprises a light source and a transmission optics that has an optical axis; a light receiver that has a plurality of receiver elements for receiving light from the monitored zone that is remitted by an object to be detected; and a reception optics arranged upstream of the light receiver. The invention further relates to a floor-bound vehicle having a monitoring sensor.

Abstract: A distance-measuring sensor (10) is provided for detecting and determining the distance of objects (18) in a monitored zone comprising a transmitter (12) for transmitting transmitted pulses; a receiver (20) for generating a received signal from the transmitted pulses remitted in the monitored zone; a first comparator unit (36a) for digitizing the received signal with reference to a first threshold; and a control and evaluation unit (30) which is configured to transmit a plurality of transmitted pulses via the transmitter (12), to collect the received signals thereupon generated by the receiver (20) in a histogram and to determine a received time point from the histogram and thus to determine a measured value for the signal transit time from the sensor (10) to the object (18).

Abstract: The present invention relates to a method of operating a distance-measuring monitoring sensor for monitoring an at least two-dimensional protected field that is divided into a plurality of sector-shaped, cyclically scannable monitored fields, wherein the monitoring sensor comprises at least one light transmitter and at least one light receiver. The invention further relates to a monitoring sensor.

Abstract: A distance-measuring optoelectronic sensor (10) for detection of objects in a monitoring zone (20), the sensor (10) comprising: a light transmitter (12) for transmitting a transmission light pulse (16) into the monitoring area (20), a light receiver (26) for generating a reception signal from the light pulse (22) remitted by objects in the monitoring area (20), a control and evaluation unit (32) configured to determine a reception point in time from the reception signal and the distance of the object by means of a light time of flight method, and a first and second sampling memory (34a) having a plurality of memory cells each for storing a section of the reception signal and having partially overlapping recording regions, each being configured to record a reception signal for a longer duration than a time interval between two successive transmission light pulses (16).

Abstract: The present invention relates to a method of operating a distance-measuring monitoring sensor for monitoring an at least two-dimensional protected field that is divided into a plurality of sector-shaped, cyclically scannable monitored fields, wherein the monitoring sensor comprises at least one light transmitter and at least one light receiver. The invention further relates to a monitoring sensor.

Abstract: The invention relates to an optoelectronic sensor for monitoring a monitored zone. The sensor comprises a main light transmitter for transmitting sensing light signals that propagate through a protective screen into the monitored zone; a main light receiver for receiving light that emanates from the monitored zone; and a control unit for controlling the sensor. The sensor is configured in this respect to carry out a contamination recognition in which the degree of contamination of the protective screen is determined by means of a measured contamination value. The sensor in accordance with the invention is characterized in that the control unit is adapted to recognize the approach of a hand and/or of a finger toward the protective screen with reference to the contamination recognition and to output an action signal on the recognition of the hand and/or of the finger.

Abstract: An optoelectronic sensor (10) for the detection of objects in a monitoring area (20) comprises a light transmitter (12) for transmitting a light signal (16) into the monitoring area (20), a light receiver (26) for converting the light signal (22) reflected or remitted by an object into an electrical reception signal, a supplementary circuit (38) for operating the light receiver (26), and an evaluation (32) which is configured to determine a reception level of the reception signal and to determine object information about the object from the reception signal, wherein the evaluation unit (32) is further configured to determine the reception level from measurement information in the supplementary circuit (36, 38).

Abstract: A distance-measuring sensor (10) is provided for detecting and determining the distance of objects (18) in a monitored zone comprising a transmitter (12) for transmitting transmitted pulses; a receiver (20) for generating a received signal from the transmitted pulses remitted in the monitored zone; a first comparator unit (36a) for digitizing the received signal with reference to a first threshold; and a control and evaluation unit (30) which is configured to transmit a plurality of transmitted pulses via the transmitter (12), to collect the received signals thereupon generated by the receiver (20) in a histogram and to determine a received time point from the histogram and thus to determine a measured value for the signal transit time from the sensor (10) to the object (18).