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Search Coil Assembly and System for Metal Detection

  • US 20130307531A1
  • Filed: 05/17/2012
  • Published: 11/21/2013
  • Est. Priority Date: 05/17/2012
  • Status: Active Grant
First Claim
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1. A search coil assembly comprising:

  • a transmit coil being configured to be operable for radiating a magnetic field in response to a time varying electrical current, said transmit coil comprising a conductive path being disposed at least within a transmit plane for radiating the magnetic field; and

    at least one receive coil being configured to be operable for inducting an electrical current in response to a time varying magnetic field, said receive coil comprising a conductive path being disposed at least within a receive plane for inducting the electrical current, said receive coil being positionable to place said receive plane and said transmit plane in a substantially orthogonal orientation with said receive plane being substantially within null regions of said transmit coil'"'"'s magnetic field, in which a metallic object, at a distance from the search coil assembly, reacts to a radiated magnetic field from said transmit coil, and said receive coil inducts an electrical current in response to the reaction.

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