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Electronic lockset with multi-source energy harvesting circuit

  • US 9,644,401 B2
  • Filed: 05/02/2016
  • Issued: 05/09/2017
  • Est. Priority Date: 03/12/2013
  • Status: Active Grant
First Claim
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1. An electronic lockset for use with a radio frequency (“

  • RF”

    ) transmitter configured to transmit at one or more predetermined frequencies, the electronic locket comprising;

    a locking device moveable between a locked position and an unlocked position;

    one or more energy consumption devices configured to actuate the locking device between the locked position and the unlocked position;

    at least one rechargeable battery configured to provide power to the one or more energy consumption devices;

    a RF energy harvesting circuit configured to be electrically coupled with the rechargeable battery, wherein the RF energy harvesting circuit is configured to convert RF energy to a direct current (“

    DC”

    ) power source for recharging the rechargeable battery;

    wherein the RF energy harvesting circuit includes an RF receiver tunable to a plurality of predetermined frequencies; and

    wherein the RF receiver includes a user-selectable switch configured to tune the RF receiver to one of the plurality of predetermined frequencies by user actuation of the switch.

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