抄録
The motion analysis method of the non-parabolic jumping motion using wearable sensor is proposed. The wireless inertial measurement sensor unit version2 (WIMU2) uniquely developed consists of 3D accelerometer, 3D gyroscope, 3D geomagnetic sensor, 9 AD channels, memory and wireless communication module. Twelve WIMU2 are mounted on upper body and lower one. The posture of the body is estimated using the axis direction of sensor that is modified by extended Kalman filter. When the hand or foot touches the wall or ground, touching position is considered as the origination of calculation, and 3D posture of whole body is constructed. The trajectory of the body during jumping is calculated by the double integration of measured acceleration from the trunk. To confirm the efficacy of proposed motion analysis method, one subject pushes the wall forward during jumping and lands backward. The experimental result shows that the proposed motion analysis method is able to estimate the posture and trajectory of the whole body during non-parabolic jumping motion.
