ABNORMALITY DETECTION SYSTEM, DETERMINATION DEVICE, ABNORMALITY DETECTION METHOD, DETERMINATION METHOD, AND PROGRAM
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United States of America Patent
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Issued Date -
Sep 12, 2024
app pub date -
Oct 26, 2021
filing date -
Mar 4, 2021
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Abstract
This abnormality detection system comprises: a solenoid valve; a power supply which applies a voltage to a load terminal of the solenoid valve via a switch circuit and a diode; a drive circuit which drives the solenoid valve via the load terminal; a first detection unit which detects a voltage indicating the state of the drive circuit; a second detection unit which detects a voltage associated with a voltage of the load terminal of the solenoid valve; and a determination unit which determines whether the load terminal is in a ground fault state on the basis of the detection result by the first detection unit and the detection result by the second detection unit when the switch circuit is in an ON state.
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