Wireless Inertial Measurements

Wireless Inertial Measurements

Inertial based motion capture systems are becoming increasingly prominent. They provide an attractive alternative to optical based systems, which are expensive, susceptible to marker occlusion, and have limited capture areas. However, current inertial based systems are often bulky and inaccurate. Accuracy issues arise when calculating displacement. Inertial measurement units output acceleration and rotational velocities, which are then integrated to give displacement. The integration of the accelerations and rotational velocities include errors that cause the predicted motion of the sensor to drift from its true value. This wireless motion capture system uses a dynamic model to constrain the drift due to integration. The use of a model with the sensor measurements will lead to a motion capture system whose accuracy is comparable to optical systems at a fraction of the cost.

Unique Selling Propositions
  • Real time, high-speed data logging
  • Upgradable and inexpensive
  • Sealed and protected for use in rough conditions
  • Small, portable and mobile
  • Complete wireless sensor solution
  • Equipped with inductive power transfer for wireless charging
  • Possible applications can be found in many fields where there is an advantage in gaining information about specific movements. Examples include gait analysis, sports, performing arts, gaming, real time monitoring of people or livestock.
IP Strategy

Provisional Patent filed.

Project Status

Proof of Concept - Early prototype built