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Wireless, battery-less, asset sensor and communication system: apparatus and method

  • US 20040002835A1
  • Filed: 06/26/2002
  • Published: 01/01/2004
  • Est. Priority Date: 06/26/2002
  • Status: Abandoned Application
First Claim
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1. - A battery-less sensor for an asset sensing and communication system, said battery-less sensor comprising in combination:

  • a transducer operatively coupled to an asset for sensing physical asset parameters and outputting analog signals correlative thereto;

    means for receiving and deriving power from a wirelessly transmitted signal;

    means, operatively coupled to both said power deriving means and said transducer, for sampling and digitizing said analog signals into digitized signals;

    means, operatively coupled to both said receiving means and to said sampling and digitizing means, for modulating said received transmitted signal as a function of said digitized signals for transmitting data correlative to said sensed physical asset parameters such that said received transmitted signal is used both for wirelessly providing power to said battery-less sensor and for wirelessly transmitting data from said battery-less sensor which is correlative to said sensed physical asset parameters.

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