Monitoring apparatus and method
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United States of America Patent
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Sep 9, 2014
Grant Date -
Aug 30, 2012
app pub date -
Mar 22, 2012
filing date -
Sep 28, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
According to one embodiment, a monitoring apparatus includes an acquisition unit, an analysis unit, a calculation unit, a storage, a determination unit. The acquisition unit acquires an environmental sound. The analysis unit performs frequency analysis to extract characteristic frequency components. The calculation unit calculates first values of metrics. The storage stores contour data generated by second values of the metrics. The determination unit determines whether or not there is a first measurement point in which a first value and a second value match, if there is no first measurement point or the change is not less than the threshold value, determines that the machines is abnormal.
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