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Methods for improving signal quality in wearable biometric monitoring devices

  • US 10,382,839 B2
  • Filed: 08/07/2017
  • Issued: 08/13/2019
  • Est. Priority Date: 09/27/2014
  • Status: Active Grant
First Claim
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1. A method of detecting if a biometric monitoring device is being worn by a subject, wherein the biometric monitoring device includes a PPG sensor, the method comprising:

  • receiving a signal produced by the PPG sensor;

    processing the signal produced by the PPG sensor via at least one processor to determine a statistical distribution of a group of consecutive peaks in the signal;

    determining via the at least one processor that the device is being worn if the statistical distribution of the group of consecutive peaks in the signal is consistent with R-R intervals of a living person or that the device is not being worn if the statistical distribution of the group of consecutive peaks in the signal is not consistent with R-R intervals of a living person; and

    autonomously adjusting an adjustment mechanism of the biometric monitoring device responsive to the determination that the device is being worn.

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