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：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.