Dual bumper-light curtain obstacle detection sensor

Details Dual bumper-light curtain obstacle detection sensor Dual bumper-light curtain obstacle detection sensor

1989-12-28

1990-11-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

180168, G01V 904

Patent

active

049688782

ABSTRACT:
An obstacle detection and position sensing system for autonomous mobile vehicles is described. The system includes two spaced-apart contact and position sensitive bumpers disposed across the frontal cross section of the vehicle. Light beams are directed by transceivers and retroreflectors across the frontal cross section area between the two bumpers, forming a light curtain. The combination of the bumpers and light curtain provides complete frontal coverage of the potential collision cross-section of a fairly large vehicle, without obstructing the field of view of sonar, optical, or other forward-looking sensors.

REFERENCES:
patent: 4423998 (1984-01-01), Inaba et al.
patent: 4651074 (1987-03-01), Wise
patent: 4668859 (1987-05-01), Winterer
patent: 4829174 (1989-05-01), Booth et al.

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