Application of Motion Capture System Based on MEMS Inertial Sensor in Martial Arts Competition
W. H. Yao
W. H. Yao, Application of Motion Capture System Based on MEMS Inertial Sensor in Martial Arts Competition, Journal of Mechanical Engineering Research and Developments, vol. 40, no. 1, pp. 7-13, 2017.
ABSTRACT: Aiming at the difficult problems in martial arts motion, such as complexity, coherence and instantaneous motion capture, which results in the defects of the motion capture inaccurate, this paper designs a motion capture measurement system based on MEMS inertial sensor’s integrated module ADIS16355. Firstly, the paper introduces the basic function modules of ADIS16355, elaborates the method of measuring real-time attitude angle by two sensors fusion and gives the Calman iterative filtering algorithm; secondly, using ADIS16355 as the martial arts motion capture unit, uses the accelerometer to observe the gravity vector to correct the attitude information of martial arts motion given by the gyro; then, applies Calman filter sensor information fusion to calculate motion vector of attitude angle; finally, designs the hardware of martial arts motion capture system based on Cotex-M3 microprocessor of the ARMv7 architecture. The experimental results show that the motion capture system based on MEMS can control the motion capture error in the martial arts competition in a small range of stability, which lays the technical foundation for the capture of complex movements.
Keywords: MEMS; ADISI16355; Motion capture system; Cotex-M3 microprocessor; Martial arts competition.