Monitoring device, monitoring procedure and program

Abstract

The purpose of the present invention is to provide a monitoring device capable of preventing excessive anomaly detection by increasing monitoring accuracy using a MD value. The monitoring device includes: computational means configured to calculate an MD value based on a process value of a rotating machine; computational means configured to calculate a gap value, which represents the ratio of a difference between a measured value of the process value and the estimated value of the process value, with respect to a difference between a threshold for detecting an anomaly of the process value and an estimated value of the process value; and detection means configured to determine an operating state of the rotating machine based on the MD value and the gap value.