Condition monitoring apparatus, condition monitoring system, and condition monitoring method
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United States of America Patent
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Sep 13, 2022
Grant Date -
May 21, 2020
app pub date -
Apr 4, 2018
filing date -
Apr 13, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A data processing device includes a peak detector that detects a peak from a frequency spectrum and a map generator that generates an abnormality map for the frequency spectrum. The abnormality map includes as abnormal components, a frequency of a detected peak of interest and a frequency of a peak that appears together with the peak of interest when the peak of interest is assumed as the peak originating from abnormality. The data processing device includes an abnormal peak extractor that extracts as an abnormal peak, a peak at a frequency that matches with any of the abnormal components included in the abnormality map and a first criterion value calculator that calculates a first criterion value representing occurrence of abnormality corresponding to the abnormality map based on a spectral density of the abnormal peak.
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