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Robust RFID-Based System and Method for Precise In-House Positioning

  • US 20070109125A1
  • Filed: 07/24/2006
  • Published: 05/17/2007
  • Est. Priority Date: 07/25/2005
  • Status: Active Grant
First Claim
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1. A method for locating a moving object in an in-door environment, comprising:

  • receiving signals from a plurality of radio frequency identification (RFID) tags, wherein each of the plurality of RFID tags has an associated identification information transmitted in the signals and the plurality of tags is scattered in the in-door environment with a distribution density high enough to distinguish the in-door environment into a plurality of locations; and

    matching a set of associated identification information in the received signals with a set of stored location map to select one location from the plurality of locations for the moving object;

    wherein the moving object carrying an RFID antenna and an RFID reader for receiving signals from the plurality of RFID elements and the plurality of RFID elements being only capable of transmitting signals up to a certain distance.

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