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Systems and methods for object localization and path identification based on RFID sensing

  • US 10,635,867 B2
  • Filed: 06/19/2013
  • Issued: 04/28/2020
  • Est. Priority Date: 07/27/2007
  • Status: Active Grant
First Claim
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1. A radio frequency identification (RFID) system for localizing an RFID tag, the system comprising:

  • a plurality of radio frequency identification (RFID) tag readers;

    a computer system communicatively coupled with the plurality of RFID tag readers over a network;

    a memory associated with the computer system, the memory storing a network semantic model having a plurality of endpoints and oriented links between the endpoints, wherein the endpoints are associated with physical locations in space, each of the endpoints having associated with it one or more radio frequency identification (RFID) tag readers, the network semantic model further comprising at least one semantic attribute associated with at least one of the oriented links;

    at least one sensor;

    the computer system being configured to localize the RFID tag based on data received from the RFID tag readers;

    the computer system further being configured to associate an RFID tag rating with the RFID tag;

    the computer system further being configured to adjust the network semantic model as a function of a measured parameter from the sensor;

    the computer system further being configured to determine that the RFID tag has traversed the oriented link and further to adjust the RFID tag rating associated with the RFID tag based on the determination that the RFID tag has traversed the oriented link, the adjusted RFID tag rating further being a function of the semantic attribute associated with the oriented link.

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