CPC G06F 3/046 (2013.01) [G01L 1/146 (2013.01); G01L 1/205 (2013.01); G06F 3/03545 (2013.01); G06F 3/045 (2013.01); G06F 3/047 (2013.01); G06F 3/0441 (2019.05); G06F 3/0442 (2019.05); G06F 3/0445 (2019.05); G06F 3/0446 (2019.05); G06F 3/0447 (2019.05); G06F 3/04146 (2019.05); G06F 3/04162 (2019.05); G06F 3/04166 (2019.05); G06F 3/04182 (2019.05); G06F 3/04186 (2019.05); G06F 3/041661 (2019.05); G06F 3/0448 (2019.05); G06F 2203/04103 (2013.01); G06F 2203/04104 (2013.01); G06F 2203/04105 (2013.01); G06F 2203/04106 (2013.01)] | 13 Claims |
1. A sensor, comprising:
a sensing area comprising a grid of force sensing elements, where force sensing elements of the grid of force sensing elements are connected between respective row electrodes of a group of row electrodes and respective column electrodes of a group of column electrodes;
an AC signal source operatively connected between column multiplexing circuitry and a control circuit; and
an analog switch operatively connected between the control circuit and the sensing area, wherein the analog switch facilitates alternating, for respective force sensing elements being scanned, between a first scan of the sensing area via the AC signal source and a second scan of the sensing area via a DC voltage source.
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