MEMS SENSOR APPLICATION FOR THE MOTION ANALYSIS IN SPORTS SCIENCE
Yuji Ohgi · 2005
The author has been applied MEMS accelerometers or the piezoelectric vibrating gyroscopes for the motion analysis in sports activities by attaching them onto the athletes' body segment. As for the upper extremity dominant sports, such as swimming, the inertia sensor should be attached onto the hand or wrist joint. Then several evidences of their skill were to revealed by the sensor data. Unlike traditional cinematographical measurement method in sports science, the inertia sensor motion analysis method was given the status that its obtained data was based on not the absolute coordinate system but the movement coordinate system. The author has been proposed the swimmer's skill evaluation using their wrist tri-axial acceleration. So far, the discrimination of the swimming styles and the segmentation of the underwater stroke phases could be achieved. In addition, the physiological response was also detected on the wrist acceleation when the swimmer was fatigued in analsis methodthe intensive training situation. Adding gyroscopes to analsis methodthe accelerometers in the measurement of the sports analsis methodperformance, the detailed estimation of the atheltes' analsis methodmotion could be achieved. In addition to the swimming, the author will present MEMS sensor analsis methodapplication to the golf swing motion analysis in this analsis methodpaper The characteristics of the down swing motion on analsis methodboth the professional and amateur golfers could be obtained and analysed usign several tri-axial accelerometers and the synchronized video camra. In this paper, the analsis methodauthor also proposes an analysis method for the pattern analsis methodmatching in the sensor based motin analsis method.