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MMW Enhanced Infrared Concealed Object Detection with Closed-Loop Control of Illumination Energy

  • US 20110205367A1
  • Filed: 02/23/2010
  • Published: 08/25/2011
  • Est. Priority Date: 02/23/2010
  • Status: Active Grant
First Claim
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1. An active infrared sensor apparatus, comprising:

  • an imaging infrared sensor to provide an output signal conveying time-sequential images of a scene which includes a subject;

    a beam generator to generate a millimeter wave energy beam; and

    a processor coupled to the imaging infrared sensor and the beam generator, the processor for performing actions including;

    storing an initial infrared image of the scene in a memory,after storing the initial infrared image, causing the beam generator to illuminate the subject with the millimeter wave energy beam,estimating a temperature change across the subject due to the millimeter wave energy beam based on the output signal and the stored initial infrared image, andcausing the beam generator to stop illuminating the subject when a highest temperature change across the subject is at least equal to a predetermined temperature change limit.

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