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Preventing False Locks in a System that Communicates With an Implanted Wireless Sensor

  • US 20070100215A1
  • Filed: 09/06/2006
  • Published: 05/03/2007
  • Est. Priority Date: 09/06/2005
  • Status: Active Grant
First Claim
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1. A method for identifying a false lock, comprising:

  • generating an energizing signal with a first phase and a first frequency;

    receiving a calibration signal;

    determining a first phase difference between the calibration signal and the energizing signal;

    based on the first phase difference adjusting the first phase of the energizing signal to reduce the first phase difference;

    energizing a wireless sensor with an energizing signal having the first frequency;

    receiving a sensor signal;

    determining whether the sensor signal includes a predetermined beat frequency; and

    if the sensor signal includes the predetermined beat frequency, then determining that the first frequency of the energizing signal corresponds to a false lock.

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