Vehicle guidance system employing radio blocking

Details Vehicle guidance system employing radio blocking Vehicle guidance system employing radio blocking

1979-03-19

1981-08-18

Mitchell, David M.

Motor vehicles

With means for controlling operation responsive to...

Having controlling means adapted to interact with stationary...

104299, 318587, B62D 124

Patent

active

042841607

ABSTRACT:
A guidance system for guiding a plurality of unmanned vehicles along a traffic layout includes a plurality of code devices which divide the traffic layout into a plurality of zones and identify each zone by a unique identifying code. Each vehicle includes control circuits having code sensors which sense the identifying code as the vehicle enters a zone and provide data to a present memory which stores present address data representing the identity of the zone in which the vehicle is now traveling. A past memory, which receives data from the present memory, stores past address data representing the identity of the zone in which the vehicle was previously traveling. The control circuits further include a time slot generator which provides timing signals defining a plurality of time slots each of which is assigned to a different zone. A comparator circuit responds to the past address data and the timing signals to effect transmission of a position signal during the time slot assigned to the zone in which the vehicle was previously traveling, and a further comparator circuit responds to the present address data and the timing signals to cause the vehicle to be halted whenever a position signal is received during the time slot assigned to the zone in which the vehicle is presently traveling.

REFERENCES:
patent: 2847080 (1958-08-01), Zworykin
patent: 3147817 (1964-04-01), DeLiban
patent: 3245493 (1966-04-01), Barrett, Jr.
patent: 3411603 (1968-11-01), Kohls
patent: 3544788 (1970-12-01), Guzik
patent: 3661092 (1972-05-01), Morley
patent: 3669206 (1972-06-01), Tax et al.
patent: 3734229 (1973-05-01), Comer

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