Patent ID: 11886178
Assignee: YANTAI JEREH OILFIELD SERVICES GROUP CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  F | IPC F  G

Claim 6:
7. The fault diagnosis method according to claim 4, wherein:
the sample data of the discharge end comprises first sample data of the discharge end obtained when the fluid device is in the normal state, and second sample data of the discharge end obtained when the fluid device is in the fault state;
both the first sample data of the discharge end and the second sample data of the discharge end contain data correspond to the number M of statistical indicators;
based on the sample data of the discharge end, selecting at least one statistical indicator with the difference significance parameter greater than the second threshold value from the number M of statistical indicators as the number Q of discharge end statistical indicators comprises:
for each of the number M of statistical indicators, determining difference significance parameters based on data of corresponding indicators in the first sample data of the discharge end and in the second sample data of the discharge end;
selecting at least one statistical indicator with the difference significance parameter greater than the second threshold value from the number M of statistical indicators as the number Q of discharge end statistical indicators.