Method for automatically testing the operational status of a wireless power receiver in a wireless power transmission system

  • US 10,008,889 B2
  • Filed: 08/21/2014
  • Issued: 06/26/2018
  • Est. Priority Date: 08/21/2014
  • Status: Active Grant
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First Claim
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1. A wireless power receiver, comprising:

  • a plurality of antenna elements configured to receive power from a controlled constructive interference formed by a set of radio frequency (RF) wireless power waves that are transmitted by a far-field wireless power transmitter that is separate from the wireless power receiver;

    a rectifier, coupled to the plurality of antenna elements, and configured to rectify AC voltage received from the plurality of antenna elements into DC voltage;

    a communications component that is distinct and separate from the plurality of antenna elements;

    a processor coupled to the plurality of antenna elements, the communications component, and the rectifier, the processor being configured to;

    measure the AC voltage and the DC voltage, andupon an occurrence of a predetermined event, perform a test of the wireless power receiver to test one or more operational metrics;

    generate a status message indicating one or more statuses of the wireless power receiver based upon comparing a set of the one or more operational metrics associated with at least one of the AC voltage and the DC voltage against a set of one or more reference metrics, wherein the one or more statuses includes an error status upon determining that at least one operational metric does not satisfy a threshold value associated with at least one reference metric in the set of one or more reference metrics;

    determine whether a communication connection between the wireless power receiver and the far-field wireless power transmitter is available;

    in accordance with a determination that the communication connection between the wireless power receiver and the far-field wireless power transmitter is available;

    cause the communication component to transmit the status message to the far-field wireless power transmitter;

    receive, via the communication component, a response to the status message directly from the far-field wireless power transmitter; and

    perform an action at the wireless power receiver in accordance with the response received directly from the far-field wireless power transmitter.

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