Component state monitoring

Details Component state monitoring Component state monitoring

1982-08-05

1986-03-11

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

340644, 340686, 137554, H04Q 100, G08B 2100

Patent

active

045757186

ABSTRACT:
Apparatus suitable for use with an operative system for monitoring the operational state of at least one system component such as a valve, which can adopt three possible states. The apparatus includes a state signal generator for operative association with the component and is responsive to the state of the component. The apparatus generates a first steady state signal whenever the component is in first state, a second steady state signal when the component is in a second state and a time varying signal such as a square wave when the component is in a third state.

REFERENCES:
patent: 3571800 (1971-03-01), Taylor et al.
patent: 3832629 (1974-08-01), Cernek, Jr.
patent: 4007380 (1977-02-01), Thurgood
patent: 4381507 (1983-04-01), Parmer
patent: 4456908 (1984-06-01), Morroll et al.

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