Robotics
Electromagnetic (EMF) motion tracking
ActivePublished
Key
innovation
6-DoF tracking without line of sight and independent of lighting, robust to hand/finger occlusion.
Category
Robotics
Abstraction level
Building block
Operation level
Robot controlSystem
How it works
The transmitter produces a magnetic field with known characteristics; the sensor coils measure the field components, and the 6-DoF pose is computed from a field model. Accuracy is higher near the transmitter; nearby metals can introduce interference. In data gloves this enables millimeter-level fingertip tracking with low latency.
Problem solved
Optical motion tracking (cameras) fails under hand occlusion, poor lighting and finger self-occlusion, hindering precise teleoperation and hand-motion data collection.