Abstract
This paper introduces the wearable motion sensor system for motion analysis and the application to sport fields of this sensor system. We have developed the measurement system installing the inertial and magnetic field sensors as the wearable motion sensor system, and we have mainly applied to the motion analysis of snow sports. The wearable motion sensor can simply measure the motion by attaching to the equipment and body segments. The inertial sensor measures the angular velocity and the acceleration. Furthermore, the 3D posture can be estimated by applying the sensor fusion, and the inverse dynamics analysis and the velocity estimation can be used by combining the force sensors and the GPS receiver. The performance of motion sensor and the measurement method are progressing on a daily basis. Therefore, the wearable motion sensor system will be much further applied to the motion analysis in sports and other fields.
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