Obstacle detection system

Details Obstacle detection system Obstacle detection system

1988-09-23

1990-02-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250239, 180275, G01N 2186

Patent

active

049030540

ABSTRACT:
An obstacle detection system for protecting a frame upper end portion and laser scanning device of a self guided vehicle from damage by external objects includes a device for delivering a light signal in a direction along a preselected elevationally oriented axis and a device for receiving a reflection of the delivered light signal and delivering a condition control signal in response to receiving the reflected light signal. A supporting assembly is connected to the frame upper end portion and a guide frame is connected to the supporting assembly and defines a plane passing through the elevationally oriented axis. A reflecting member is supported on the guide frame and a connecting device connects the reflecting member to the support assembly and maintains the reflecting member for movement between a first position at which the reflecting member reflects the light signal towards the receiving device and a second position spaced from the first position at which the reflecting member is free from reflecting the light signal towards the receiving device.

REFERENCES:
patent: 2522637 (1950-09-01), Pripeton
patent: 3664701 (1972-05-01), Kondur
patent: 4722410 (1988-02-01), Melocik et al.
patent: 4730690 (1988-03-01), McNutt et al.

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