G - Physics – 01 – D
Patent
G - Physics
01
D
G01D 1/00 (2006.01) G05B 23/02 (2006.01)
Patent
CA 2079613
56,201 ABSTRACT OF THE DISCLOSURE An electrohydraulic fluid system monitors the fluid line 1, reservoir 2, motor pumps 4 and 6, accumulators 10 and drain line 13 in an electrohydraulic fluid system. The electrohydraulic fluid monitor system includes sensors 14-40 to detect temperature, pressure, fluid level and motor pump current in the electrohydraulic fluid system. Signals from these sensors are converted 54 by an analog to digital convertor into digital signals read by a processor unit 58 and stored by the processor unit as data for diagnostic analysis. In one embodiment of the present invention, the processor unit 58 stores the information and compares the information to predetermined threshold amounts or to previous values and outputs a malfunction indication to a status display, responsive to results of these comparisons, which indicates the presence or nonpresence of a malfunction in the electrohydraulic fluid system. In another embodiment of the present invention, the microprocessor outputs the information to an artificial intelligence system 94. The artificial intelligence system 94 applies a set of diagnostic rules from a rule storage 96 to obtain a malfunction diagnosis or hypothesis that indicates other rules to be applied to diagnose the malfunction. As a result, the present invention rapidly detects or diagnoses malfunctions in the electrohydraulic fluid system.
Gray Robert F.
Jenkins Maurice A.
Wilhelm Peter L.
Bereskin & Parr
Gray Robert F.
Jenkins Maurice A.
Westinghouse Electric Corporation
Wilhelm Peter L.
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