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SYSTEMS AND METHODS FOR MEASUREMENT OF DEPTH OF BREATH AND PARADOXICAL BREATHING

  • US 20100292568A1
  • Filed: 05/28/2010
  • Published: 11/18/2010
  • Est. Priority Date: 04/03/2008
  • Status: Abandoned Application
First Claim
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1. A method of sensing motion using a motion sensor, the method comprising:

  • generating electromagnetic radiation from a source of radiation, wherein the frequency of the electromagnetic radiation is in the radio frequency range;

    transmitting the electromagnetic radiation towards a subject using one or more transmitters;

    receiving a radiation scattered at least by the subject using one or more receivers;

    extracting a Doppler shifted signal from the scattered radiation;

    transforming the Doppler shifted signal to a digitized motion signal, said digitized motion signal comprising one or more frames, wherein the one or more frames comprise time sampled quadrature values of the digitized motion signal;

    processing said one or more frames to distinguish, at least in part, information corresponding to the cardiopulmonary movement of the subject or a part of the subject, substantially separate from non-cardiopulmonary motion or other signal interference;

    estimating the subject'"'"'s depth of breath from the cardiopulmonary movement information; and

    communicating the information to an output system that is configured to perform an output action.

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