Fault indicating systems in vehicles

Details Fault indicating systems in vehicles Fault indicating systems in vehicles

1974-09-26

1976-03-30

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340183, 340324R, 340413, G08B 1900

Patent

active

039478114

ABSTRACT:
A fault indicating system in a vehicle includes a d.c. source, a plurality of electrically operated devices operated by the d.c. source and a plurality of fault indicating units, one for each device. Each fault indicating unit is operable by a predetermined address signal, and on being operated produces after a delay an output representative of the operation condition of its device, each fault indicating unit having a different delay. A monitoring unit produces the predetermined address signal and receives the output signals from the fault indicating units. The monitoring unit operates in cycles, in each of which it has a transmission period in which it feeds the address signal to all the fault indicating units, and a plurality of receiving periods during which it receives the output signals from the fault indicating units in turn, warning means being operable by the monitoring unit to indicate a fault in any of the devices.

REFERENCES:
patent: 3651454 (1972-03-01), Venema et al.
patent: 3835450 (1974-09-01), Reck
patent: 3846639 (1974-11-01), Veda et al.

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