Fig. 10.
a An auto-reset algorithm with b “quasi-static and dynamic moment detector” for calculation of the sensor orientation. Rectified signals S(t), which derived from the variation of the inclination derived from the accelerometer’s signals (Tacc), compared with the threshold to identify the condition is quasi-static or dynamic. The orientation of the sensor along the x and y axes (Tangle) was calculated from the integration of the gyroscope’s signals (ωgyro) at dynamic moment (condition) and the inclination derived from the accelerometer’s signals at quasi-static moment (condition)