Anomaly monitoring device and method

Details Anomaly monitoring device and method Anomaly monitoring device and method

2007-08-28

2009-06-30

Raymond, Edward (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Performance or efficiency evaluation

C703S001000

Reexamination Certificate

active

07555407

ABSTRACT:
An anomaly monitoring device includes: a signal input unit for receiving a periodic target signal generated by an operating apparatus; a storage unit for storing therein segmented target signals provided from the target signal in a form of a queue; a dividing unit for providing comparing portions of each segmented target signal; a power calculating unit for calculating a power of each comparing portion in each segmented target signal. The device further includes an anomalous input detecting unit which judges that a comparing portion of a latest segmented target signal is abnormal if a power of the comparing portion is in a range of abnormal values when compared with a corresponding comparing portion in a previous segmented target signal, and determines that the signal input unit is abnormal if the number of abnormal comparing portions in the latest segmented target signal exceeds a threshold.

REFERENCES:
patent: 2005/0143976 (2005-06-01), Steniford

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