Full-bridge strain-gauge array of finger thermal compensation
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United States of America Patent
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May 21, 2019
Grant Date -
Mar 1, 2018
app pub date -
Aug 31, 2016
filing date -
Aug 31, 2016
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Abstract
A force sensor having a strain gauge array including force sensing electrodes arranged in a full-bridge configuration comprising at least two of a first resistor type and at least two of a second resistor type, wherein the at least two of the first resistor type form a first force sensing node and the at least two of the second resistor type form a second force sensing node, a processing system communicatively coupled to the force sensing electrodes, the processing system being configured to receive a first signal from the first force sensing node and a second signal from the second force sensing node, wherein the first signal includes a thermal response, and the second signal includes the thermal response and an applied force, and remove the thermal response by comparing the first and second signals to obtain the applied force.
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