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System and method for rapid data collection from pressure sensors in a pressure sensing system

  • US 9,513,177 B2
  • Filed: 03/10/2011
  • Issued: 12/06/2016
  • Est. Priority Date: 03/12/2010
  • Status: Active Grant
First Claim
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1. A method of measuring capacitances of n capacitors in a pressure sensing system including the pressure sensing system comprising:

  • a plurality of linear conductor columns and a plurality of linear conductor rows, wherein the columns are not parallel to the rows, and an array of n capacitors each formed at an overlying region of a column and a row, and wherein the columns and rows are respectively disposed on opposite sides of a sheet of a compressible dielectric, the method comprising;

    applying an alternating known voltage to n circuits, each of the n circuits comprising a different bank of n−

    1 capacitors interconnected in parallel and the one remaining capacitor connected in series with the bank;

    measuring the alternating current of each of the n circuits;

    applying an alternating known voltage to an n+1 circuit comprising the n capacitors interconnected in parallel;

    measuring the alternating current of the n+1 circuit; and

    deriving from the measured current of each of the n circuits and the n+1 circuit and the known voltages of each of the n circuits and the n+1 circuits the capacitance of each of the n capacitors.

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