Programmable near-infrared ranging system

Details Programmable near-infrared ranging system Programmable near-infrared ranging system

1988-02-26

1989-07-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502221, G01V 904

Patent

active

048516619

ABSTRACT:
A high angular resolution ranging system particularly suitable for indoor plications involving mobile robot navigation and collision avoidance uses a programmable array of light emitters that can be sequentially incremented by a microprocessor. A plurality of adjustable level threshold detectors are used in an optical receiver for detecting the threshold level of the light echoes produced when light emitted from one or more of the emitters is reflected by a target or object in the scan path of the ranging system.

REFERENCES:
patent: 3951549 (1976-04-01), Fowler et al.
patent: 4458146 (1984-07-01), Reiner et al.
patent: 4713545 (1987-12-01), Norrgren et al.

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