US 11,913,846 B2
Force sensing systems
Matthew Beardsworth, Austin, TX (US); Vadim Konradi, Austin, TX (US); and Bill Diehl, Austin, TX (US)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Mar. 22, 2021, as Appl. No. 17/208,317.
Claims priority of provisional application 63/013,122, filed on Apr. 21, 2020.
Claims priority of application No. 2008339 (GB), filed on Jun. 3, 2020.
Prior Publication US 2021/0325265 A1, Oct. 21, 2021
Int. Cl. G01L 1/00 (2006.01); G01L 1/22 (2006.01)
CPC G01L 1/2281 (2013.01) [G01L 1/225 (2013.01); G01L 1/2287 (2013.01)] 16 Claims
OG exemplary drawing
 
1. Compensation circuitry for compensating for a thermal effect on a resistive force sensor in a force sensor system, the compensation circuitry comprising:
monitoring circuitry configured to monitor a voltage across the resistive force sensor and a current through the resistive force sensor; and
processing circuitry, wherein the processing circuitry is configured to:
determine an absolute resistance value for the force sensor based on the monitored voltage across the force sensor and the monitored current through the force sensor; and
adjust one or more operational parameters of the force sensor system based at least in part on the determined absolute resistance value.