Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1992-06-10
1994-08-09
Wieder, Kenneth A.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324503, 307 101, 307 34, 340439, 36442403, G01R 3102
Patent
active
053370139
ABSTRACT:
Method and apparatus for monitoring the operation of a plurality of electrical loads in an automotive vehicle with a single current sensor. The current sensor detects the change in the total output current associated with the electrical loads and generates an output signal based on the current change. The apparatus also includes a controller which activates each electrical load at a given time to obtain a like plurality of timing signals so that each electrical load receives a portion of the output current. The controller processes the output signal and the timing signals to obtain a diagnostic signal related to an operating condition of at least one of the electrical loads. Finally, the controller controls an operating state of the at least one of the electrical loads based on the diagnostic signal.
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patent: 4310770 (1982-01-01), Keener et al.
patent: 4661717 (1987-04-01), Nishioka
patent: 4774510 (1988-09-01), Steinke
patent: 4894648 (1990-01-01), Talbot
patent: 4931778 (1990-06-01), Guajardo
patent: 4962350 (1990-10-01), Fukuda
Patent Abstracts of Japan, vol. 12, No. 235 (P-725) (3082) Jul. 6, 1988 and JP, A, 63 27 769 (Jidosha Kiki) Feb. 5, 1988.
Langer Peter
Snover Todd A.
Wojcik Karl W.
Brown Glenn W.
Ford Motor Company
Godwin Jr. Paul K.
May Roger L.
Wieder Kenneth A.
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