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Pick verification using moving RFID tags

  • US 9,830,485 B1
  • Filed: 10/03/2016
  • Issued: 11/28/2017
  • Est. Priority Date: 08/25/2014
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a robotic picker configured to move an item storage structure containing a plurality of items, wherein individual ones of the plurality of items have a radio frequency identification (RFID) tag affixed; and

    an RFID tag identification device configured to;

    energize a plurality of RFID tags affixed to respective ones of the plurality of items;

    receive a respective plurality of responses from respective ones of the plurality of RFID tags, each of the respective plurality of responses from the respective ones of the plurality of RFID tags comprising velocity data for the respective ones of the plurality of RFID tags;

    determine that a particular RFID tag within the plurality of RFID tags is in motion based at least in part on the velocity data in a respective response received from the particular RFID tag; and

    determine an identifier for the particular RFID tag.

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