Movement monitoring systems and associated methods

  • US 8,463,573 B2
  • Filed: 03/31/2011
  • Issued: 06/11/2013
  • Est. Priority Date: 11/21/1994
  • Status: Expired due to Fees
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First Claim
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1. An apparatus comprising:

  • a motion sensor comprising multiple accelerometers and configured to be attached to a user for transport by the user while performing an athletic activity, to generate acceleration signals in response to user movement; and

    a processor configured for processing the acceleration signals to determine;

    (i) acceleration due to gravity;

    (ii) orientation of the multiple accelerometers from the acceleration due to gravity;

    (iii) a centripedal compensation;

    (iv) an earth rate compensation; and

    (v) speed from the acceleration signals, the orientation, the centripedal compensation and the earth rate compensation;

    wherein the multiple accelerometers comprise a pitch accelerometer, a yaw accelerometer, a roll accelerometer, a surge accelerometer, a heave accelerometer and a sway accelerometer.

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