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SYSTEMS AND METHODS FOR DETECTING PARTICLES

  • US 20070220953A1
  • Filed: 03/16/2007
  • Published: 09/27/2007
  • Est. Priority Date: 03/21/2006
  • Status: Active Grant
First Claim
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1. A method of detecting particles during inspection, said method comprising:

  • establishing a security checkpoint including a detection system, the detection system comprising a chamber defining a passage and including a plurality of jets;

    passing an individual through the passage and enhancing a convection plume including particles from the individual by blowing air through at least one of the plurality of jets;

    absorbing the particles in a preconcentrator comprising a filter encased in a frame having a high thermal conductivity; and

    evaporating the particles absorbed in the preconcentrator; and

    using a detector to determine whether the particles are from at least one of an explosive material and a narcotic substance.

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