Passenger inspection system and methods for using the same
First Claim
1. A method for detecting a weapon in at least one of a first shoe and a second shoe worn by a person, the method comprising:
- positioning the first shoe and the second shoe within an inspection system comprising a first metal detector trace and a second metal detector trace, the first metal detector trace mounted substantially horizontally on a first sidewall of the inspection system with current that flows in a first direction, and the second metal detector trace mounted substantially horizontally on a second sidewall of the inspection system opposite the first sidewall with current that flows in a second direction;
generating at a predetermined quadrupole resonance frequency a first magnetic field around the first shoe by energizing the first metal detector trace to scan the first shoe;
simultaneously generating at the predetermined quadrupole frequency a second magnetic field around the second shoe by energizing the second metal detector trace to scan the second shoe simultaneously with the first shoe;
generating a quadrupole resonance current in at least one electrically conductive trace positioned below at least one of the first shoe and the second shoe; and
detecting a perturbation in the quadrupole resonance current when a weapon is present on at least one side of a longitudinal medial plane that bisects the inspection system.
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Accused Products
Abstract
A passenger inspection system includes a metal detection sensor integrated with a quadrupole resonance sensor and configured to detect weapons and/or explosives that may be present proximate the feet and/or lower legs of a person. Additionally, a weapons detection sensor may include one or more pairs of transmit coils and receive coils that are vertically mounted to the interior sidewalls of the passenger inspection system and configured to detect symmetrical and nonsymmetrical threats present on a portion of a person'"'"'s legs. Methods for operating embodiments of the passenger inspection system are also disclosed.
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Citations
12 Claims
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1. A method for detecting a weapon in at least one of a first shoe and a second shoe worn by a person, the method comprising:
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positioning the first shoe and the second shoe within an inspection system comprising a first metal detector trace and a second metal detector trace, the first metal detector trace mounted substantially horizontally on a first sidewall of the inspection system with current that flows in a first direction, and the second metal detector trace mounted substantially horizontally on a second sidewall of the inspection system opposite the first sidewall with current that flows in a second direction; generating at a predetermined quadrupole resonance frequency a first magnetic field around the first shoe by energizing the first metal detector trace to scan the first shoe; simultaneously generating at the predetermined quadrupole frequency a second magnetic field around the second shoe by energizing the second metal detector trace to scan the second shoe simultaneously with the first shoe; generating a quadrupole resonance current in at least one electrically conductive trace positioned below at least one of the first shoe and the second shoe; and detecting a perturbation in the quadrupole resonance current when a weapon is present on at least one side of a longitudinal medial plane that bisects the inspection system. - View Dependent Claims (2, 3, 4)
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5. An inspection system for detecting a weapon proximate at least one leg of a person, the inspection system comprising:
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a first metal detector trace mounted substantially horizontally on a first sidewall of the inspection system, the first metal detector trace shown to scan a first leg of the person; at least one transmit coil mounted substantially vertically to the first sidewall of the inspection system and configured to generate at least one of a longitudinal magnetic field and a transverse magnetic field within a scanning area of the inspection system; and a second metal detector trace mounted substantially horizontally on a second sidewall of the inspection system, the second sidewall opposite the first sidewall, the second metal detector trace configured to scan a second leg of the person simultaneously with the first leg. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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Specification