AIR PRESSURE SENSOR WITH TEMPERATURE COMPENSATION

  • US 20100242617A1
  • Filed: 06/14/2010
  • Published: 09/30/2010
  • Est. Priority Date: 10/18/2004
  • Status: Active Grant
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First Claim
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1. An air pressure sensor comprising:

  • a first conductive membrane configured for deflection in response to pressure differences between air at a reference pressure and air at a pressure to be sensed;

    a second conductive membrane configured for deflection in response to a change in temperature which the pressure sensor is exposed thereto; and

    a circuit in electrical communication with the first and second conductive membranes, wherein the circuit is configured to obtain a first signal and second signal from the first and second conductive membranes respectively, the first and second signals being indicative of the deflection of the first and second conductive membranes, wherein the circuit adjusts the first signal by the second signal to generate an output signal indicative of the air pressure.

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