Dual bumper-light curtain obstacle detection sensor
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United States of America Patent
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-
Sep 18, 1990
Issued Date -
N/A
app pub date -
Jul 28, 1989
filing date -
Nov 1, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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