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WIRELESS POWER TRANSMISSION

  • US 20130236038A1
  • Filed: 02/20/2013
  • Published: 09/12/2013
  • Est. Priority Date: 02/20/2012
  • Status: Active Grant
First Claim
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1. A method for wireless power transmission between one or more piezoelectric power harvesting devices attached to a structure a piezoelectric generator attached to said structure, said generator being arranged to generate vibrations in said structure, said method comprising the steps of:

  • determining the harvested voltage for the or each power harvesting device in response to a plurality of test generation frequencies for said generator;

    selecting a generation frequency from one of said test frequencies based on said harvested voltages in accordance with a predetermined formula; and

    driving said generator to generate vibrations in said structure at said generation frequency.

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