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Methods and Systems for Tracking RFID Devices

  • US 20090303047A1
  • Filed: 06/10/2008
  • Published: 12/10/2009
  • Est. Priority Date: 06/10/2008
  • Status: Active Grant
First Claim
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1. A system for tracking movement of employees and/or inventory, comprising:

  • an RFID reader including;

    a power control module configured to modify the output power of the RFID reader for each read cycle in a set of read cycle;

    reader circuitry configured to perform the set of read cycle according to the output power levels determined by the power control module; and

    a location/orientation module coupled to the power control module and the reader circuitry, the location/orientation module configured to compare data obtained by the reader circuitry during each read cycle and the associated power level of the read cycle to determine location and/or orientation information for the RFID reader.

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