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FREQUENCY DOMAIN PROJECTION ALGORITHM

  • US 20160051157A1
  • Filed: 08/22/2014
  • Published: 02/25/2016
  • Est. Priority Date: 08/22/2014
  • Status: Active Grant
First Claim
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1. A device for predicting heart rate (HR), comprising:

  • a first sensor configured to generate raw HR signals;

    a second sensor configured to generate acceleration signals along at least a first direction; and

    processing circuitry capable of;

    generating a frequency domain (FD) representation of the raw HR signals to provide a FD raw HR signal waveform;

    generating a FD representation of the acceleration signals to provide a FD acceleration signal waveform along the first direction;

    scaling a peak in the FD acceleration signal waveform at a first frequency to represent a peak at the same first frequency in the FD raw HR signal waveform;

    subtracting the scaled peak of the FD acceleration signal waveform from the FD raw HR signal waveform to obtain a FD projected HR signal waveform;

    selecting the frequency corresponding to the maximum peak of the FD projected HR signal waveform; and

    predicting a HR based on the selected frequency.

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