Detection method, detection device, and detection system
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United States of America
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Apr 1, 2025
Grant Date -
Sep 26, 2024
app pub date -
Jul 21, 2022
filing date -
Jul 21, 2022
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Abstract
A detection method includes: obtaining periodically and repeatedly sensor values output from a capacitive sensor; determining whether the sensor values obtained exceed threshold Th1; calculating, as first difference value Δ1X of each of target sensor values CX, a difference between target sensor value CX and sensor value CX+1 immediately before the target sensor value; calculating, as second difference value Δ2X of each of target sensor values CX, a difference between (i) first difference value Δ1X of target sensor value CX and (ii) first difference value Δ1X+1 of sensor value CX+1 immediately before target sensor value CX; comparing each of second difference values Δ2X calculated and threshold Th2, and selecting one sensor value CRet based on a result of the comparing; and outputting the one sensor value CRet selected.
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