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LINE NOISE ANALYSIS AND DETECTION AND MEASUREMENT ERROR REDUCTION

  • US 20100259434A1
  • Filed: 04/08/2009
  • Published: 10/14/2010
  • Est. Priority Date: 04/08/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • sensing a process parameter to generate a sensor signal that includes a process signal and line noise components;

    digitizing the sensor signal at a sample rate;

    detecting line noise zero crossings in the sensor signal;

    determining a line noise frequency as a function of the detected line noise zero crossings; and

    adjusting the sample rate as a function of the line noise frequency to reduce an impact of line noise on the digitized sensor signal.

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