Motor vehicles – With means for controlling operation responsive to... – Radiation – force – or waves reflected from external object or...
Patent
1986-06-26
1988-02-02
Love, John J.
Motor vehicles
With means for controlling operation responsive to...
Radiation, force, or waves reflected from external object or...
180275, 303 20, B60T 712
Patent
active
047224100
ABSTRACT:
Collision detection systems are commonly provided on automatic guided industrial vehicles. Such systems should be as reliable as possible and can advantageously utilize a fault detection apparatus. The subject apparatus provides a plurality of radiant energy emitting devices and receiving devices positioned along a vehicle at locations sufficient that an obstacle in a respective path of the vehicle interrupts the reception of radiant energy by respective ones of the receiving devices. Interruptable devices controllably connect a power supply to a brake control circuit in response to continuous reception of radiant energy by the respective receiving devices, and disconnect the power supply from the brake control circuit in response to any of the receiving devices failing to continue to receive radiant energy from the respective emitting device. A vehicle control circuit controllably produces first and second energization signals in response to a predetermined condition of the vehicle, and first and second switches receive respective ones of the first and second energization signals and responsively controllably supply electrical power from the power supply to predetermined ones of the emitting devices and the receiving devices.
REFERENCES:
patent: 3560922 (1971-02-01), Wilson
patent: 3664701 (1972-05-01), Kondur
patent: 4087782 (1978-05-01), Oishi et al.
patent: 4280580 (1981-07-01), Wojcik
patent: 4363376 (1982-12-01), Sjoberg et al.
patent: 4425622 (1984-01-01), Arikawa
patent: 4499543 (1985-02-01), Matsuda
Harding Joseph J.
Melocik Grant C.
Caterpillar Industrial Inc.
Love John J.
Mar Michael
Noe Stephen L.
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