Research Article

Realization of a CORDIC-Based Plug-In Accelerometer Module for PSG System in Head Position Monitoring for OSAS Patients

Figure 4

(a) Attached accelerometer on the forehead and the orientation. (b) Definition of the head position angles accordingly.
(a) Accelerometer-attached position and its orientation
(b) Definition of head rotation angle θ and inclination angle ϕ with attached accelerometer