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Systems and methods for non-invasive respiratory rate measurement

  • US 9,943,267 B2
  • Filed: 12/02/2016
  • Issued: 04/17/2018
  • Est. Priority Date: 12/02/2015
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a wearable member including;

    an energy transmitter configured to project energy into tissue of a user; and

    an energy receiver configured to generate a multichannel signal based on a first received portion of the energy, the first received portion of the energy being received through the tissue of the user; and

    a respiratory rate calculation system including;

    a pre-processing module configured to filter noise from the multichannel signal;

    a spectrum module configured to determine a spectrum of the multichannel signal;

    a respiratory rate processing module configured to;

    determine a first respiratory rate from the spectrum of the multichannel signal;

    obtain a noise reference;

    obtain one or more second respiratory rates; and

    determine a third respiratory rate based on the first respiratory rate, the noise reference, and the one or more second respiratory rates; and

    a communication module configured to provide a message including or being based on the third respiratory rate.

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