×

Determining a speed of a multidimensional motion in a global coordinate system

  • US 10,188,903 B2
  • Filed: 01/18/2013
  • Issued: 01/29/2019
  • Est. Priority Date: 01/18/2013
  • Status: Active Grant
First Claim
Patent Images

1. A method for determining a speed of a multidimensional motion of an athlete in a global coordinate system based on multidimensional acceleration data from a multidimensional accelerometer placed at a movable limb of the athlete, the movable limb being at least one of translatory and rotatable, and the movable limb defining a local coordinate system, the method comprising:

  • determining, based on the multidimensional acceleration data, at least one correction quantity taking into account a rotation of the local coordinate system relative to the global coordinate system during the multidimensional motion; and

    determining the speed of the multidimensional motion based on an integration of the multidimensional acceleration data and in consideration of the at least one correction quantity; and

    detecting at least one of the multidimensional motion and a period of motion inactivity based on at least one of (i) detecting an excess of an acceleration threshold using the multidimensional acceleration data, (ii) detecting a saturation of one or more dimensions of the multidimensional acceleration data, and (iii) detecting an oscillation of the multidimensional acceleration data.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×