Importance

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Abstract

According to one embodiment, a multi-layer force sensor can comprise two or more Force Sensitive Resistors (FSRs), Force Sensitive Capacitors (FSCs), or other force sensitive devices. Each of these force sensitive devices can comprise a different layer of the multi-layer force sensor. Additionally, each of these different layers can be constructed of a different material providing different responses, i.e., different resistance, conductance, etc., over the same range of pressure or force. As a force is applied to the multi-layer sensor, this difference in response to the force between the layers can be used to determine a value for the force. The multi-layer force sensor can be implemented in a bridge circuit. The bridge circuit can be used to measure the differences in resistance, conductance, etc. between the different layers of the multi-layer sensor.

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First Claim