Method for detecting contact on a capacitive sensor element

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United States of America Patent

PATENT NO 10788941
APP PUB NO 20190212845A1
SERIAL NO

16354699

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Abstract

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A method for detecting contact of a capacitive sensor includes transferring charge quantities in multiple successive cycles from the capacitive sensor to an integration capacitor having a known capacitance value. A voltage of the integration capacitor is measured. The measured voltage is processed to generate a sensor amplitude that is indicative of a capacitance value of the capacitive sensor. Contact of the capacitive sensor is detected based on a temporal behavior of the sensor amplitude. For instance, contact of the capacitive sensor is detected based on the rate of change of the sensor amplitude.

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Patent Owner(s)

Patent OwnerAddress
LEOPOLD KOSTAL GMBH & CO KGAN DER BELLMEREI 10 LUEDENSCHEID 58513

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Borgmann, Uwe Recklinghausen, DE 12 26

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