PORTAL TRACE DETECTION SYSTEMS FOR DETECTION OF IMBEDDED PARTICLES
First Claim
1. A trace detection system, comprising:
- a walkthrough portal having sidewalls and a ceiling that form a passage;
one or more jets each configured to direct a puff of air into the passage; and
a detection apparatus having an inlet in communication with the passage, the detection apparatus configured to detect a presence of a substance of interest included in air from the passage.
1 Assignment
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Accused Products
Abstract
A portal trace detection apparatus is provided for detecting minute particles of interest, such as traces of narcotics, explosives and other contraband. The apparatus includes a portal through which a human suspect will pass. A detection apparatus is disposed at least partly in the ceiling of the portal, and hence above the human subject in the portal. Particles of interest will be entrained in the human thermal plume that exists in the boundary adjacent the suspect, and will flow upwardly from the suspect to the detection apparatus in the ceiling of the portal. The ceiling is coated with an anti-static material so that particles are more likely to flow towards the detector and less likely to be affixed electrostatically to the ceiling.
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Citations
10 Claims
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1. A trace detection system, comprising:
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a walkthrough portal having sidewalls and a ceiling that form a passage;
one or more jets each configured to direct a puff of air into the passage; and
a detection apparatus having an inlet in communication with the passage, the detection apparatus configured to detect a presence of a substance of interest included in air from the passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification