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Sensor array for toxic gas detection

  • US 4,670,405 A
  • Filed: 03/02/1984
  • Issued: 06/02/1987
  • Est. Priority Date: 03/02/1984
  • Status: Expired due to Fees
First Claim
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1. A method for identifying at least one component in a gas sample, comprising the steps of:

  • introducing a gas sample suspected of containing at least one component to an array of sensors for exposure of said component or a derivative thereof to said sensors,said array including plural sensors having differing electrical responses to said at least one component of said derivative thereof dependent on the chemical interaction of said at least one component or said derivative thereof with each of said sensors and also dependent on an operational condition of at least one of said plurality of sensors;

    changing said operational condition during the exposure of said sensors to the gas sample to provide a plurality of different responses from said at least one sensor,forming a response pattern from the responses of said sensors, andcomparing the formed response pattern with a set of previously established response patterns to identify said at least one component.

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