公开(公告)号：US11372107B2

公开(公告)日：2022-06-28

申请号：US16257470

申请日：2019-01-25

Applicant: SICK AG

Inventor： Kai Waslowski

IPC: G01S17/48 ,  G01S17/02 ,  G08B13/183 ,  G01S7/497 ,  G01S17/04

Abstract: Triangulation photoelectric proximity sensor (1) having a first light emitter (2) for emitting transmitted light into a detection zone (3), a transmitting optical system (4), in particular a lens, being arranged upstream of the light emitter (2), a first light receiver (6) having an array of receiving elements (5) for receiving light from the detection zone (3), which is remitted by an object (7) to be detected, the receiving elements (5) generating respective received signals, a receiving optical system (8) arranged in the beam path between detection zone (3) and first light receiver (6) for generating a light spot from the remitted light on the first light receiver (6), wherein the position of the light spot in the triangulation direction on the first light receiver (6) results in dependence on the distance of the object (7), and a control and evaluation unit (9) for generating a detection signal from the received signals on the basis of the position of the light spot on the first light receiver (6), wherein a further second light transmitter (2) is provided as a reference light transmitter (12) for safety-oriented self-testing.

公开(公告)号：US10401482B2

公开(公告)日：2019-09-03

申请号：US15343851

申请日：2016-11-04

Applicant: SICK AG

Inventor： Stefan Kienzler ,  Martin Köhl ,  Kai Waslowski ,  Ulrich Zwölfer

IPC: G01C3/08 ,  G01S7/486 ,  G01S17/10 ,  G01S7/487

Abstract: An optoelectronic sensor for measuring a distance comprises a light transmitter (20) for transmitting a sequence of individual light pulses (22) and a light receiver (26) for receiving the individual light pulses (24). An individual time of flight measuring unit (28) determines a sequence of individual times of flight of the individual light pulses (22, 24) as the duration between a transmission point in time and its reception point in time. An evaluation unit (30, 32) accumulates individual times of flight and determines a common measurement value for the distance from the accumulated individual times of flight. The evaluation unit (30) comprises a filter (36) for accumulating an individual time of flight only if it coincides, within a time window, with a preceding individual time of flight.

公开(公告)号：US09989641B2

公开(公告)日：2018-06-05

申请号：US15277517

申请日：2016-09-27

Applicant: SICK AG

Inventor： Kai Waslowski ,  Ulrich Zwölfer

IPC: G01S17/02 ,  G01S7/486

CPC classification number: G01S17/026 ,  G01S7/4816 ,  G01S7/486 ,  G01S7/4865 ,  G01S7/487 ,  G01S7/497 ,  G01S17/10

Abstract: The invention relates to a method of detecting an object in which pulses of transmitted light are repeatedly transmitted into a transmission zone by means of a light source; reception light received from the detection zone is detected by means of a detection apparatus which has a plurality of detectors; and an evaluation zone is defined which comprises a plurality of detectors and within which reception light is incident onto the detectors. The method is characterized in that a plurality of part regions are fixed within the evaluation zone; the part regions are at least partly successively evaluated while using a plurality of consecutive pulses of transmitted light; and the evaluations of the part regions are combined to determine the presence of an object in the detection zone.

公开(公告)号：US10761209B2

公开(公告)日：2020-09-01

申请号：US16213061

申请日：2018-12-07

Applicant: SICK AG

Inventor： Kai Waslowski ,  Ingolf Hörsch ,  Gerhard Merettig ,  Matthias Götz

IPC: G01S17/04 ,  G01S7/481 ,  G01S17/48 ,  G01V8/20

Abstract: The present invention relates to a triangulation light sensor for the detection of objects on a conveying path having a light transmitter for transmitting transmitted light into a detection zone that extends over a part region of the conveying path, having a light receiver, a reception optics arranged in an optical path between the detection zone and the light receiver, and an evaluation unit that is configured for generating an object detection signal from the received signals.

公开(公告)号：US10948575B2

公开(公告)日：2021-03-16

申请号：US16013313

申请日：2018-06-20

Applicant: SICK AG

Inventor： Stefan Kienzler ,  Martin Köhl ,  Kai Waslowski ,  Ulrich Zwölfer ,  Christophe Thil

IPC: G01S7/4863 ,  G01S17/10 ,  G01S7/4865 ,  G01S7/487 ,  G01S7/497 ,  G01S17/18 ,  G01S17/894

Abstract: An optoelectronic sensor is provided for measuring the distance from an object in a monitored zone that has a light transmitter for transmitting light signals into the monitored zone; a light receiver having at least one avalanche photodiode operated in Geiger mode for receiving the light signals reflected or remitted by the object; an individual time of flight measurement unit for determining an individual time of flight of a light signal from the sensor to the object; and an evaluation unit that is configured to generate a common measured value for the distance from a plurality of individual times of flight.