Anomaly detecting method, and apparatus for the same

摘要

A method of detecting anomaly in a facility or an apparatus by using multi-dimensional time series sensor signals outputted from sensors attached to the facility or apparatus during operation, comprising: a step of generating anomaly model by using sensor signals in a pre-designated period out of the multidimensional time series sensor signals and calculating anomaly determining thresholds; a step of extracting feature vectors from the multidimensional time series sensor signals as observed vectors; a step of calculating anomaly measurements of the observed vectors by using the extracted observed vectors and the generated normal model; and a step of detecting any anomaly in the facility or apparatus by comparing the calculated anomaly measurements of the observed vectors and the anomaly determining thresholds, wherein: the normal model is generated by using multidimensional time series sensor signals cleared of signals of some periods in the pre-designated period out of all the multi-dimensional time series sensor signals.