Systems and methods of object detection in wireless power charging systems

  • US 10,270,261 B2
  • Filed: 02/25/2016
  • Issued: 04/23/2019
  • Est. Priority Date: 09/16/2015
  • Status: Active Grant
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First Claim
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1. A method for wireless power transmission comprising:

  • transmitting, by a transmitter, radio frequency (RF) power waves that converge to form constructive interference at a location associated with a receiver;

    receiving, from at least one thermal imaging camera in communication with the transmitter, a thermal image of at least a portion of a transmission field of the transmitter;

    identifying, by the transmitter, a living being within a field of view of the at least one thermal imaging camera, the field of view including at least the transmission field of the transmitter, and the living being is identified based upon temperature data in the thermal image;

    after transmitting the RF power waves that converge to form constructive interference at the location associated with the receiver, determining, by the transmitter, a proximity of the identified living being to the RF power waves; and

    adjusting, by the transmitter, a power level of the RF power waves upon determining that the proximity of the living being is within a predefined distance from the RF power waves.

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