Motion capture system using MEMS inertia sensors for Alpine skiing

Research Project

Project/Area Number	23700754
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Sports science
Research Institution	The University of Tokyo (2013-2014) Ritsumeikan University (2011-2012)
Principal Investigator	YOSHIOKA Shinsuke 東京大学, 総合文化研究科, 准教授 (20512312)
Project Period (FY)	2011-04-28 – 2015-03-31
Project Status	Completed (Fiscal Year 2014)
Budget Amount *help	¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000) Fiscal Year 2013: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000) Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000) Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords	ジャイロセンサ / モーションキャプチャ / 遠心力 / 慣性センサ / 屋外動作計測 / スキー動作計測 / 慣性センサー
Outline of Final Research Achievements	The purpose of this study was to develop a motion capture system with MEMS inertia sensors which we can use under the environment affected by centrifugal force such as alpine skiing. Many previous studies have developed it with gyroscope, accelerometer and magnetometer. However, those systems have the problem that the measured data is disturbed by centrifugal force and/or magnetic field distortion. In order to prevent it, we developed the measurement method in which accelerometer and magnetometer are not used, in other words, only gyroscopes is used. The accuracy of this method was similar to those of other studies.