| 摘要 |
[Problem] To infer whether an anomaly is present in an object subjected to sensing, and what is causing the anomaly. [Solution] Provided is an anomaly sensing device, comprising: one or more sensors which measure various states of an object subjected to sensing; a measurement data acquisition unit which acquires, from the sensors, measurement data for prediction computation and measurement data for inference computation; a model database which stores a normal behavior model which represents behavior when the object subjected to sensing is operating normally, and a plurality of anomalous behavior models which represents behaviors of the object subjected to sensing when an anomaly has occurred due to various causes; a normal behavior model prediction means which calculates, from the measurement data for prediction computation and the normal behavior model, predicted values of the measurement data for inference computation with respect to a normal state of the object subjected to sensing; an anomalous behavior model prediction means which calculates, from the measurement data for prediction computation and the plurality of anomalous behavior models, predicted values of the measurement data for inference computation with respect to an anomalous state of the object subjected to sensing, said anomalous state arising from the various causes; and an anomaly cause inference means which infers, on the basis of the measurement data for inference computation, the predicted values of the normal behavior model prediction means, and the predicted values of the anomalous behavior model prediction means, whether an anomaly is present in the object subjected to sensing and what is causing the anomaly. |
