Automatic fault detection system in electrical sensing circuit

Details Automatic fault detection system in electrical sensing circuit Automatic fault detection system in electrical sensing circuit

1992-05-21

1993-10-05

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324503, 324539, 324556, 340650, 340651, 340946, G01R 3102

Patent

active

052509095

ABSTRACT:
An electrical sensing circuit has a sensor device and an indicator such as a warning light. The system of the present invention continuously monitors the operational status of the sensing circuit. Normally open sensors are provided with a resistance across the open circuit contacts to provide a small leakage current. For each sensor, high and low comparators are provided. The high comparator is ground seeking and is used to detect closure of open circuit sensors, grounded connections and systems tests. The low comparator detects open circuits or high resistances such as might be caused by broken or loose wires, improperly connected sensors or electrically degrated sensors. The comparators drive logic components, which in turn drive indicators of circuit operational readiness.

REFERENCES:
patent: 3629816 (1971-12-01), Gillund
patent: 3825307 (1974-07-01), Carr et al.
patent: 3955183 (1976-05-01), McBrian
patent: 3963981 (1976-06-01), Vis
patent: 4001818 (1977-01-01), Radichel et al.
patent: 4070660 (1978-01-01), Tauber
patent: 4086570 (1978-04-01), Wakasa et al.
patent: 4166243 (1979-08-01), West et al.
patent: 4219805 (1980-08-01), Magee et al.
patent: 4667187 (1987-05-01), Volk et al.
patent: 4673912 (1987-06-01), Kumasaka et al.
patent: 4728898 (1988-03-01), Staley, Jr.
patent: 4783631 (1988-11-01), Nakashima et al.
patent: 4845435 (1989-07-01), Bohan, Jr.
patent: 5045840 (1991-09-01), Berrier et al.
patent: 5166880 (1992-11-01), Furui
patent: 5187465 (1993-02-01), Stonerook et al.

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