Equipment condition monitoring manner, monitoring system and executive program

摘要

Anomaly sign detection methods such as those found in plants cannot detect anomalies when relevant sensor information is not acquired, and while it is possible to detect anomalies through changes in sensor output when MANUAL operations are performed and it is difficult to distinguish between anomalies such as those caused only by the sensor signal and actual anomalies which should be detected. The disclosed method uses event signals and which contain a signal based ON the status of a unit unable to acquire sensor information and a signal based ON human operations. An event sequence is extracted from an event signal outputted from a piece of equipment and grouped by clustering, then a frequency matrix is created for the alarms generated within a prescribed interval of an event sequence and a prediction of alarms with a high probability of occurring for an event sequence is output ON the basis of the frequency matrix.