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POSTURE SENSOR AUTOMATIC CALIBRATION

  • US 20120191155A1
  • Filed: 04/02/2012
  • Published: 07/26/2012
  • Est. Priority Date: 06/12/2008
  • Status: Active Grant
First Claim
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1. A device comprising:

  • an accelerometer configured to sense an acceleration signal from a patient;

    a filter circuit configured to extract a characteristic of the acceleration signal;

    a comparison circuit configured to perform a comparison between the characteristic of the acceleration signal and a stored template to distinguish a walking state of the patient from a non-walking activity state of the patient; and

    a posture calibration circuit configured to use an orientation of the accelerometer in the walking state to perform a posture calibration of the acceleration signal of the accelerometer.

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