Solenoid valve abnormality detection device, automatic medical analysis apparatus using same, and solenoid valve abnormality detection method

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United States of America

PATENT NO 12142423
APP PUB NO 20230230741A1
SERIAL NO

17997382

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention accurately estimates the opening state of a solenoid valve using a feature amount based on driving current information of the solenoid valve. A solenoid valve abnormality detection device, which uses a driving current pattern associated with valve opening of a solenoid valve and detected by a current sensor to detect an abnormality of the solenoid valve, comprises: a feature amount extraction unit that determines a feature amount of a driving current pattern associated with valve opening of the solenoid valve within a predetermined detection period; a feature amount correction unit that estimates the valve temperature of the solenoid valve; and an opening state estimation unit that estimates the opening state of the solenoid valve using the feature amount value corrected by the feature amount correction unit.

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Patent Owner(s)

Patent OwnerAddress
HITACHI HIGH-TECH CORPORATION17-1 TORANOMON 1-CHOME MINATO-KU TOKYO 1056409 ?1056409

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Suzuki, Hiroshi Tokyo, JP 997 14336
Tanaka, Kazuhiro Tokyo, JP 167 1940
Yoshida, Gorou Tokyo, JP 9 5
Zhou, Guangbin Tokyo, JP 21 120

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