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SYSTEMS AND METHODS FOR OBJECT LOCALIZATION AND PATH IDENTIFICATION BASED ON RFID SENSING

  • US 20130278388A1
  • Filed: 06/19/2013
  • Published: 10/24/2013
  • 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 in signal communication with the plurality of RFID tag readers over a network;

    a memory associated with the computer, the memory storing a network 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 computer being configured to operate a software module that localizes the RFID tag based on data received from the RFID tag readers;

    the software module further being configured to associate a composite semantic attribute to the RFID tag by;

    assigning a first semantic attribute to a first oriented link;

    assigning a second semantic attribute to a second oriented link;

    defining the composite semantic attribute based on a combination of the first semantic attribute and the second semantic attribute;

    determining that the RFID tag passed the first oriented link at a first time value;

    determining that the RFID tag passed a second oriented link at a second time value; and

    associating the composite semantic attribute to the RFID tag.

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