Title:
OBJECT DETECTION SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2020/185540
Kind Code:
A3
Abstract:
In one aspect, an object detection system is provided that adapts to the distance between the emitter and receiver. The system may utilize a range determining operation whereby the receiver will adjust an operation threshold, such as the detected signal strength required for the receiver to indicate that no object is present. The system may increase the threshold of the receiver as the strength of the received signal from the emitter increases, and upon certain conditions, decrease the threshold of the receiver as the strength of the received signal decreases. The system may utilize different receiver thresholds corresponding with different distance ranges between the emitter and receiver. By increasing the threshold of the receiver, the system may disregard low-level reflected light, thereby avoiding ignoring legitimate obstructions, while allowing the system to operate reliably over a wide physical range between the emitter and receiver.
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Inventors:
BRATTON PAUL D (US)
DAVIES MICHAEL JOSEPH (US)
GAVETT SCOTT E (US)
DAVIES MICHAEL JOSEPH (US)
GAVETT SCOTT E (US)
Application Number:
PCT/US2020/021329
Publication Date:
October 29, 2020
Filing Date:
March 06, 2020
Export Citation:
Assignee:
CHAMBERLAIN GROUP INC (US)
International Classes:
G01V8/12; G08B5/36; G08B21/02
Foreign References:
| JP2013213680A | 2013-10-17 | |||
| JPS5317004B2 | 1978-06-05 | |||
| JP2012247410A | 2012-12-13 | |||
| KR20180049934A | 2018-05-14 | |||
| US20030155488A1 | 2003-08-21 |
Attorney, Agent or Firm:
KRATZ, Rudy et al. (US)
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