Fault detection in electronic vehicle controls

Details Fault detection in electronic vehicle controls Fault detection in electronic vehicle controls

1982-05-17

1984-04-17

Trafton, David L.

Communications: electrical

Selective

Having indication or alarm

340520, B60Q 100

Patent

active

044437846

ABSTRACT:
A fault signal indicating system which contains a bistable memory device which changes from a first to a second stable state in response to a fault signal. Simple logic circuitry is provided for disabling the memory device while it is in the second state so that it will not be affected by secondary fault signals. In systems where a plurality of bistable memory devices are used, each being associated with a respective one of plural fault signal outputs, logic circuitry is employed to disable predetermined ones of the memories in response to any one of them being in the second state. Voltage regulation and power interruption circuitry is provided to disable the memory devices when power supply voltages fall below predetermined levels. Circuitry is provided for resetting all of the memories simultaneously to the first stable state.

REFERENCES:
patent: 3960011 (1976-06-01), Renz et al.
patent: 4031363 (1977-06-01), Freeman et al.
patent: 4053868 (1977-10-01), Cox et al.
patent: 4184146 (1980-01-01), Fratzke et al.
patent: 4188618 (1980-02-01), Weisbart
patent: 4246493 (1981-01-01), Beeghly
patent: 4246566 (1981-01-01), Endo et al.

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