Device for detecting the failure of a sensor

Details Device for detecting the failure of a sensor Device for detecting the failure of a sensor

1983-03-03

1985-06-04

Gill, James J.

Communications: electrical

Condition responsive indicating system

Specific condition

73 1R, 73 35, 123479, G01L 2322

Patent

active

045217696

ABSTRACT:
A device for detecting the failure of a sensor which is installed on machine elements which are fitted with rotating parts, a reference signal being obtained from the output signal of the sensor, the reference signal being compared, in a comparator, with the output signal of the sensor, the output pulses from the comparator being employed to trigger a retriggerable one-shot multivibrator circuit. The absence of the output signal initiates an alarm and/or an adjustment of certain machine sub-systems. The arrangement can be employed for monitoring the most diverse types of sensor, for example for monitoring knock sensors in internal combustion engines.

REFERENCES:
patent: 4320729 (1982-03-01), Sawada et al.
patent: 4418567 (1983-12-01), Boning et al.

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