Sensor fault detector

Details Sensor fault detector Sensor fault detector

1988-01-20

1989-07-04

Karlsen, Ernest F.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

340635, G01R 3102, G08B 2100

Patent

active

048454354

ABSTRACT:
A sensor fault detector for detecting a missing or shorted environment condition sensor of a plurality of sensors includes a sensor circuit for supplying a concurrent output signal from each sensor, a reference voltage circuit for supplying a predetermined reference voltage, a plurality of comparators, each of the comparators concurrently comparing a repective one of the output signals with the reference signal to produce a corresponding comparator output signal representative of a predetermined relationship between the compared signals assure the presence of properly working and connected sensors and a monitoring circuit responsive to the concurrent effect of output signals from all of the comparators to produce a control signal representative of a concurrent properly working and connected state of all of the sensors.

REFERENCES:
patent: 3746981 (1973-07-01), Stone
patent: 3829849 (1974-08-01), Stauffer
patent: 3863034 (1975-01-01), Morrison
patent: 4590533 (1986-05-01), Murata

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