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Monitoring Device With An Accelerometer, Method And System

  • US 20130178754A1
  • Filed: 02/24/2013
  • Published: 07/11/2013
  • Est. Priority Date: 07/28/2010
  • Status: Active Grant
First Claim
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1. A device for monitoring a real-time heart rate of a user, the device comprising:

  • an article attached to the user;

    an optical sensor connected to the article, the optical sensor configured to generate a real-time digitized optical signal corresponding to a flow of blood through tissue of the user, the optical sensor comprising a photodetector, a first LED emitting a green light, a second LED emitting a green light, and a light barrier, the light barrier preventing the photodetector from receiving direct light from the first LED or the second LED;

    an accelerometer connected to the article, the accelerometer generating a real-time accelerometer data comprising a X-axis signal, a Y-axis signal and a Z-axis signal based on a movement of the user; and

    a processor configured to receive the real-time digital signal from the optical sensor and configured to receive the real-time accelerometer data from the accelerometer, the processor configured to generate a period of motion filter value from the real-time accelerometer data utilizing an array of filters, and the processor configured to generate a real-time heart rate for the user based on the real-time digital signal filtered by suppressing the period of motion filter value and a heart rate filter value.

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