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RFID Asset Tracking Method and Apparatus

  • US 20090207022A1
  • Filed: 02/19/2008
  • Published: 08/20/2009
  • Est. Priority Date: 02/19/2008
  • Status: Abandoned Application
First Claim
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1. A system for detecting, in an equipment rack comprising a plurality of slots, the presence and specific slot of devices bearing a radio frequency identification (RFID) tag in the rack, the system comprising:

  • a plurality of resonator circuits, each resonator circuit corresponding to and disposed adjacent to a slot in the equipment rack;

    a first circuit for driving the plurality of resonator circuits with a drive signal for exciting RFID tags via magnetic field excitation;

    a multiplexer having a plurality of input terminals, each input terminal coupled to one of the plurality of resonator circuits, and an output terminal; and

    a signal processing circuit coupled to the output terminal of the multiplexer for reading the signals of the resonator circuits and determining the identification of any RFID tags excited by the resonator circuits.

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