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SYSTEMS AND METHODS FOR SENSOR CALIBRATION IN PHOTOPLETHSYMOGRAPHY

  • US 20140275890A1
  • Filed: 03/15/2013
  • Published: 09/18/2014
  • Est. Priority Date: 03/15/2013
  • Status: Abandoned Application
First Claim
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1. A photoplethysmography sensor, comprising:

  • a light emitting element configured to emit light at a first wavelength and having an electrical input and an electrical output;

    a light detecting element configured to receive the light emitted by the light emitting element; and

    a calibration device coupled to the electrical input of the light emitting element to measure a first voltage present at the electrical input, and coupled to the electrical output of the light emitting element to measure a second voltage present at the electrical output,wherein the calibration device comprises a controller configured to determine a voltage difference between the first voltage and the second voltage when a current is passed through the light emitting element, and to determine calibration information for the sensor based on the voltage difference.

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