US 12,736,060 B2Granted

Cause-of-anomaly estimation device for fluid machine, cause-of anomaly estimation method therefor, and cause-of-anomaly estimation system for fluid machine

AssigneeHitachi Industrial Products, Ltd.

InventorsYohei Magara, Masaki Kanada, Takayasu Kasahara, Naohiko Takahashi, Kohei Nishida

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Abstract

In order to obtain a cause-of-anomaly estimation device for a fluid machine that enables simple and convenient, and highly precise estimation of a cause of an anomaly of the fluid machine, the present invention includes: a measurement value input unit to which a measurement value obtained from a sensor installed in the fluid machine is input; a performance calculation unit that calculates the performance of the fluid machine from the measurement value obtained by the measurement value input unit; an anomaly determination unit that determines the presence or absence of an anomaly in the measurement value obtained by the measurement value input unit and in the performance of the fluid machine as calculated by the performance calculation unit; a cause-of-anomaly estimation unit that estimates a cause of an anomaly of the fluid machine on the basis of a determination result regarding the presence or absence of an anomaly in the performance of the fluid machine as determined by the anomaly determination unit, and a cause of an anomaly of the fluid machine pre-stored in a cause-of-anomaly database; and a results output unit that outputs a cause-of-anomaly estimation result regarding the fluid machine as estimated by the cause-of-anomaly estimation unit.

Claims9

Dependent claims

A cause-of-anomaly estimation device for a fluid machine that monitors a state of the fluid machine, and, in a case where there is an anomaly, estimates a cause of the anomaly, the cause-of-anomaly estimation device comprising:

a measurement value input unit to which measurement values obtained from one or more sensors installed in the fluid machine is input;
a performance calculation unit that calculates performance of the fluid machine from the measurement value obtained by the measurement value input unit;
an anomaly determination unit that determines presence or absence of an anomaly in the measurement value obtained by the measurement value input unit and in the performance of the fluid machine as calculated by the performance calculation unit;
a cause-of-anomaly estimation unit that estimates a cause of an anomaly of the fluid machine on a basis of a determination result regarding the presence or absence of an anomaly in the performance of the fluid machine as determined by the anomaly determination unit, and a cause of an anomaly of the fluid machine estimated from a relationship between a cause of an anomaly of the fluid machine pre-stored in a cause-of-anomaly database, and a measurement value and performance correlated with occurrence of the anomaly;
and
a results output unit that outputs a cause-of-anomaly estimation result regarding the fluid machine as estimated by the cause-of-anomaly estimation unit, wherein
the anomaly determination unit acquires a normally measured value and performance of the fluid machine pre-stored in a normally measured-value database, and determines whether or not there is an anomaly in the measurement value obtained by the measurement value input unit and in the performance as calculated by the performance calculation unit relative to the normally measured value and performance acquired from the normally measured-value database.

4 more elements

A cause-of-anomaly estimation method for a fluid machine in which a state of a fluid machine is monitored, and, in a case where there is an anomaly, a cause of the anomaly is estimated, the cause-of-anomaly estimation method comprising:

inputting, to a measurement value input unit, a measurement value obtained from a sensor installed in the fluid machine;
by a performance calculation unit, calculating performance of the fluid machine from the measurement value obtained by the measurement value input unit;
by an anomaly determination unit, determining presence or absence of an anomaly in the measurement value obtained by the measurement value input unit and in the performance of the fluid machine as calculated by the performance calculation unit;
by a cause-of-anomaly estimation unit, estimating a cause of an anomaly of the fluid machine on a basis of a determination result regarding the presence or absence of an anomaly in the performance of the fluid machine as determined by the anomaly determination unit, and a cause of an anomaly of the fluid machine estimated from a relationship between a cause of an anomaly of the fluid machine pre-stored in a cause-of-anomaly database, and a measurement value and performance correlated with occurrence of the anomaly;
thereafter outputting, to a results output unit, a cause-of-anomaly estimation result regarding the fluid machine as estimated by the cause-of-anomaly estimation unit;
and
by the anomaly determination unit, acquiring a normally measured value and performance of the fluid machine pre-stored in a normally measured-value database, and determining whether or not there is an anomaly in the measurement value obtained by the measurement value input unit and in the performance as calculated by the performance calculation unit relative to the normally measured value and performance acquired from the normally measured-value database.

4 more elements

Dependencies are inferred from the claim text.