Phase discriminating capacitive array sensor system

Details Phase discriminating capacitive array sensor system Phase discriminating capacitive array sensor system

G - Physics

01

B

G01B 7/14 (2006.01) G01D 5/24 (2006.01) H03K 17/955 (2006.01) H03K 17/96 (2006.01)

Patent

CA 2096174

PHASE DISCRIMINATING CAPACITIVE ARRAY SENSOR SYSTEM Abstract of the Disclosure A phase discriminating capacitive sensor array system which provides multiple sensor elements which are maintained at a phase and amplitude based on a frequency reference provided by a single frequency stabilized oscillator. Sensor signals provided by the multiple sensor elements are controlled by multiple phase control units, which correspond to the multiple sensor elements, to adjust the sensor signals from the multiple sensor elements based on the frequency reference. The adjustment made to the sensor signals is indicated by output signals which indicate the proximity of the object. The output signals may also indicate the closing speed of the object based on the rate of change of the adjustment made, and the edges of the object based on a sudden decrease in the adjustment made.

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