Foreign object detection in wireless energy transfer systems

  • US 9,442,172 B2
  • Filed: 09/10/2012
  • Issued: 09/13/2016
  • Est. Priority Date: 09/09/2011
  • Status: Active Grant
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First Claim
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1. A foreign object debris detection system for a wireless energy transfer system, comprising:

  • at least one magnetic field sensor comprising at least one magnetic field gradiometer; and

    at least one readout circuit to measure electrical parameters of the at least one magnetic field sensor,wherein the at least one magnetic field sensor is positioned within a magnetic field of the wireless energy transfer system.

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