Patent ID: 11971706
Assignee: BASF SE
Field: Control (Instruments)
Classification: CPC G  Y | IPC G

Claim 6:
7. The method according to claim 1, wherein the method further comprises:
determining, in response to the anomaly event signal, at least one root cause of the anomaly, by performing any one or more of the: checking for which of the sensors in the sensor object the sensor's measured output changed from the sensor's expected output at the same given time as the occurrence of the anomaly event; analyzing the time series residual signal of each sensor within the sensor object to determine one or more main drivers or most dominant contributors to the level signal value; analyzing the time series residual signal of each sensor within the sensor object to determine one or more main drivers or most dominant contributors to the association signal value; and analyzing covariance of time series residual signals of each pair combination of the sensor residual signals within the sensor object to determine one or more main drivers or most dominant contributors to the association signal value.