EM Field Head Tracking System specifications
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Introduction
The EMF head tracking system consists of field coils in the walls of a booth that create X,Y and Z (or Horizontal, Frontal and Vertical) oscillating EM fields with different frequencies. The fields are sensed by a small pick-up coil mounted on a glasses frame worn by a subject. The signal is analysed and converted into a position of the subjects head relative to his/her default forward looking resting position.
Parts
EMF Head Tracking System Schematics.png %todo
Oscillators
Amplifiers
Resonance circuits
Wall coils
Pick-up coil
Lock-in amplifiers
ADC's
recording device
(RZ6 or RA16)