SIGN DETECTION DEVICE AND SIGN DETECTION METHOD
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United States of America Patent
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Issued Date -
May 18, 2023
app pub date -
Mar 26, 2021
filing date -
Mar 26, 2021
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Abstract
A sign detection device includes: a plurality of sensors disposed at a plurality of positions on a detection target object and configured to measure physical quantities at each position; a data acquisition unit for acquiring time-series fluctuation data of the physical quantities from the plurality of sensors; a calculation unit for calculating, from the time-series fluctuation data, a parameter indicating a correlation between the physical quantities at arbitrary two positions among the plurality of positions; and a detection unit for detecting a sign of sudden change in vibration of the detection object based on the parameter.
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