Ferromagnetic detection pillar and variable aperture portal
First Claim
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1. An apparatus for detecting a ferromagnetic threat object, comprising:
- a free-standing pillar;
at least one applied magnetic field source mounted on said pillar;
at least one magnetic sensor mounted on said pillar; and
at least one alarm device;
wherein said at least one sensor is adapted to detect the magnetization of a ferromagnetic threat object by said magnetic field source; and
wherein said at least one sensor is adapted to activate said at least one alarm device upon detection of a threat object.
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Abstract
A ferromagnetic detection pillar having one or more applied magnetic field sources and one or more magnetic field sensors, with the magnets and sensors arranged and adapted to detect a ferromagnetic threat object on any side of the pillar. A single free-standing pillar can be used to provide protection in an MRI facility, or two or more free-standing pillars can be arranged to constitute a variable aperture detection portal. Single sensors or multiple-sensor configurations can be used.
73 Citations
21 Claims
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1. An apparatus for detecting a ferromagnetic threat object, comprising:
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a free-standing pillar;
at least one applied magnetic field source mounted on said pillar;
at least one magnetic sensor mounted on said pillar; and
at least one alarm device;
wherein said at least one sensor is adapted to detect the magnetization of a ferromagnetic threat object by said magnetic field source; and
wherein said at least one sensor is adapted to activate said at least one alarm device upon detection of a threat object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for detecting a ferromagnetic threat object, comprising:
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providing a free-standing pillar having at least one applied magnetic field source and at least one magnetic sensor;
providing at least one alarm device;
detecting the magnetization of a ferromagnetic threat object by said magnetic field source, with said sensor; and
activating said at least one alarm device upon detection of a threat object by said sensor. - View Dependent Claims (18, 19, 20, 21)
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Specification