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

US10188903B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Niels Hadaschik · Erlangen, DE
• Ferdinand KEMETH · Erlangen, DE
• Matthias Schaefer · Philippine, NL
• Thomas Von Der Gruen · Kleinsendelbach, DE

Key dates

• Filing date: Jan 18, 2013
• Grant date: Jan 29, 2019
• Expiry date: Apr 12, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V40/23
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Embodiments relate to 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. Based on the multidimensional acceleration data, at least one correction quantity may be determined taking into account a rotation of the local coordinate system relative to the global coordinate system during the multidimensional motion. The speed of the multidimensional motion may be determined based on an integration of the multidimensional acceleration data and in consideration of the at least one correction quantity.