公开(公告)号：US20180372851A1

公开(公告)日：2018-12-27

申请号：US16013582

申请日：2018-06-20

Applicant: SICK AG

Inventor： Stefan KIENZLER ,  Martin KÖHL ,  Kai WASLOWSKI ,  Ulrich ZWÖLFER ,  Christophe THIL

IPC: G01S7/486 ,  G01S17/42 ,  G01S17/89

Abstract: An optoelectronic sensor is provided for measuring the distance from an object in a monitored zone that has a light transmitter for transmitting individual light signals into the monitored zone; a light receiver having at least one avalanche photodiode operated in Geiger mode for receiving the individual light pulses reflected or remitted by the object; an individual time of flight measurement unit for determining an individual time of flight of an individual light pulse as a duration between a transmitted point in time of the respective individual light pulse and its received point in time at the avalanche photodiode; and an evaluation unit that is configured to determine a common measured value for the distance from a plurality of individual times of flight and to estimate how many individual times of flight are to be expected in a time interval on the basis of background events.

公开(公告)号：US20180372849A1

公开(公告)日：2018-12-27

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: G01S7/486 ,  G01S17/10

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.

公开(公告)号：US20240310492A1

公开(公告)日：2024-09-19

申请号：US18605535

申请日：2024-03-14

Applicant: SICK AG

Inventor： Fabian Tobias WÜLKER ,  Ulrich ZWÖLFER

IPC: G01S7/481 ,  G01S7/4865

CPC classification number: G01S7/4816 ,  G01S7/4813 ,  G01S7/4865

Abstract: An optoelectronic sensor for the detection of objects in a monitored zone having a light transmitter for transmitting transmitted light, having a measurement light receiver for generating a received signal from transmitted light reflected by objects in the monitored zone, having a control and evaluation unit for determining information on objects in the monitored zone using the received signal, and having one or more optical elements that are arranged in the optical path of the transmitted light of the light transmitter such that some of the transmitted light moves into the monitored zone as detection light, wherein the optical element conducts some of the transmitted light to a reference light receiver, wherein the measurement light receiver and the reference light receiver are arranged on a semiconductor component, with the semiconductor component being arranged on a circuit board, and with the measurement light receiver only being illuminated by the portion of the transmitted light through the side of the semiconductor component facing the circuit board.

公开(公告)号：US20170184709A1

公开(公告)日：2017-06-29

申请号：US15343851

申请日：2016-11-04

Applicant: SICK AG

Inventor： Stefan KIENZLER ,  Martin KÖHL ,  Kai WASLOWSKI ,  Ulrich ZWÖLFER

IPC: G01S7/486 ,  G01S17/10

CPC classification number: G01S7/4865 ,  G01S7/487 ,  G01S17/10 ,  G01S17/107

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：US20220113413A1

公开(公告)日：2022-04-14

申请号：US17498396

申请日：2021-10-11

Applicant: SICK AG

Inventor： Ulrich ZWÖLFER ,  Michael ALBERT ,  Stephan KOLB

IPC: G01S17/10 ,  G01S7/4863 ,  G01S7/4865 ,  G01S7/487

Abstract: An optoelectronic sensor for measuring a distance using a light time of flight method, comprising a light transmitter for transmitting a light signal, a light receiver having a plurality of light receiving elements for detecting received light, a plurality of light time of flight measuring units for determining respective individual light times of flight, a memory for collecting individual light times of flight, and a control and evaluation unit configured to determine a distance value by evaluating the collected individual light times of flight, wherein a readdressing unit is configured to write individual light times of flight to specific addresses of a same uniform memory depending on the assignment of a light time of flight measuring unit to a group, so that the control and evaluation unit can assign the stored individual light times of flight via the address to a group and thus to a distance value.

公开(公告)号：US20180210084A1

公开(公告)日：2018-07-26

申请号：US15876466

申请日：2018-01-22

Applicant: SICK AG

Inventor： Ulrich ZWÖLFER ,  Alexander BOHLI ,  Michael ALBERT

IPC: G01S17/10 ,  G01S7/486

CPC classification number: G01S17/10 ,  G01J1/44 ,  G01J2001/4466 ,  G01S7/4817 ,  G01S7/4863 ,  G01S7/4865 ,  G01S7/497 ,  G01S17/105 ,  G01S17/89

Abstract: An optoelectronic sensor for determining the distance of an object having a light transmitter for transmitting a light pulse; having a SPAD light receiver with a measurement reception element and a reference reception element; and having an evaluation unit that is configured to determine a time of flight between the transmission of the light pulse and the reception of the remitted light pulse and from this the distance of the object from the received signals of the measurement reception element and of the reference reception element. The invention further relates to a method of determining an object in a monitored zone.

公开(公告)号：US20170090029A1

公开(公告)日：2017-03-30

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.