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SYSTEMS AND METHODS FOR FILTERING AUTOCORRELATION PEAKS AND DETECTING HARMONICS

  • US 20150230759A1
  • Filed: 02/20/2015
  • Published: 08/20/2015
  • Est. Priority Date: 02/20/2014
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a photoplethysmograph (PPG) signal;

    processing, with processing equipment, the PPG signal to generate at least one respiration information signal;

    generating, with the processing equipment, an autocorrelation sequence based on the at least one respiration information signal;

    identifying, with the processing equipment, a respiration peak of the autocorrelation sequence;

    generating, with the processing equipment, a composite peak based on the respiration peak and at least one previous respiration peak; and

    calculating, with the processing equipment, respiration information based at least in part on the composite peak.

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