Difference between revisions of "EM Field Head Tracking System specifications"

Revision as of 14:52, 20 November 2023

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)

@@ Line 4: / Line 4: @@
 ==Parts==
 [[EMF Head Tracking System Schematics.png]] %todo
-*X, Y and Z Oscillators
+===Oscillators===
-*three amplifiers
+===Amplifiers===
-*three resonance circuits
+===Resonance circuits===
-*three sets of opposite facing wall coils
+===Wall coils===
-*pick-up coil
+===Pick-up coil===
-*three lock-in amplifiers
+===Lock-in amplifiers===
-*three ADC's
+===ADC's===
-*recording device (RZ6 or RA16)
+===recording device===
+(RZ6 or RA16)