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Printed capacitive sensor

  • US 7,368,921 B2
  • Filed: 04/04/2007
  • Issued: 05/06/2008
  • Est. Priority Date: 02/10/2006
  • Status: Expired due to Fees
First Claim
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1. A capacitive sensor comprising:

  • a first flexible, resilient dielectric layer having a first and second side, wherein the first dielectric layer comprises a spacer fabric;

    an electrically conductive detector and trace layer on the first side of the first dielectric layer comprising a detector and trace;

    a first electrically conductive reference layer on a second side of the first dielectric layer; and

    ,a capacitance meter electrically connected to the detector and trace layer and to the first conductive reference layer,wherein the first conductive reference layer has a first voltage and the detector and trace layer has a second voltage, and wherein the first and second voltages have a difference of at least 0.1 volts.

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