×

Gas Sensor

  • US 20100107735A1
  • Filed: 01/11/2010
  • Published: 05/06/2010
  • Est. Priority Date: 09/22/2005
  • Status: Abandoned Application
First Claim
Patent Images

1. A gas sensor comprising:

  • a first oscillator sealed in a hermetic package and having a first frequency output;

    a second oscillator exposed to an environment containing a gas to be sensed, and having a second frequency output;

    circuitry configured for determining if the gas is sensed by the second oscillator by producing a first frequency difference signal that is a difference between the first and second frequency outputs;

    one or more environmental sensors configured for measuring an environmental variable of the environment containing the gas to be sensed, and having one or more environmental sensor outputs; and

    a controller configured to determine a concentration of the sensed gas as a function of the first frequency difference signal and the one or more environmental sensor outputs.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×