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Integrated breath alcohol sensor system

  • US 9,823,237 B2
  • Filed: 04/05/2016
  • Issued: 11/21/2017
  • Est. Priority Date: 06/05/2015
  • Status: Active Grant
First Claim
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1. A breath test system comprising:

  • an air inlet configured to receive an air flow for a breath sample;

    a detection cavity connected to the air inlet in which the air flow circulates, the detection cavity comprising;

    a first electromagnetic detection path configured to generate a first signal based on the presence of a reference gas in the air flow, anda second electromagnetic detection path configured to generate a second signal based on the presence of a volatile substance in the air flow, wherein the first electromagnetic detection path is thermally isolated from the second electromagnetic detection path; and

    logic in signal communication with the first detection path and the second detection path configured to determine a concentration of the volatile substance in the air flow based on the first signal and the second signal.

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