Vehicle guidance system

Details Vehicle guidance system Vehicle guidance system

1988-09-09

1990-04-17

Lall, Parshotam S.

Boots, shoes, and leggings

364457, 364449, 364443, 180169, G06F 1550, B62D 100

Patent

active

049186078

ABSTRACT:
A navigation system for use in a self guided material handling vehicle provides guidance during operation in areas having densely stacked rows of containers and reduces the potential of deviation of the self guided vehicle from the desired path of travel. A laser signaling device is mounted on the vehicle and rotatable about an axis of rotation extending generally perpendicularly to the longitudinal axis of the self guided vehicle. The laser signaling device is adapted to delivery a light beam signal at a first preselected angle relative to the axis of rotation and a directing device is provided for directing the delivered light beam signal, during a preselected portion of rotation of the laser signaling device, at a second different preselected angle relative to the axis of rotation. A receiving device receives a reflection of the light beam signal and delivers a position signal in response to the light beam signal received. The navigation system is particularly suited for use in automatic storage and retrieval systems.

REFERENCES:
patent: 4114711 (1978-09-01), Wilkins
patent: 4488233 (1984-12-01), Tsumura
patent: 4647784 (1987-03-01), Stephens
patent: 4703820 (1987-11-01), Reinaud
patent: 4790402 (1988-12-01), Field et al.
patent: 4811228 (1989-03-01), Hyyppa
patent: 4816998 (1989-03-01), Ahlbom

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