抄録
Measuring human movement is important in various fields such as ergonomics, rehabilitation, and sports. An optical system is generally used for motion measurement. However, this method is expensive and has limited measurement space. Therefore, in this study, we measure the motion using inertial sensors. Research has already been conducted on the lower limbs, but there have been few studies on the upper body with many complex joints. Therefore, in this study, we determine the joint positions of the upper body and connect them with vectors to construct upper body motion measurement model. We also propose a system for estimating the human spine curve.