Abstract
The purpose of this study is to develop the gait analysis by using a motion sensor. Gait analysis is useful method for efficient physical rehabilitation and training of sport. In the past, gait analysis was measured by3D motion analysis system and force plates. Recently, gait analysis is measured by using a wearable sensor system, which is composed of a lot of motion sensor modules and ground reaction force sensor systems. This system is available everywhere and continuous walking. However this system is expensive price and take a long time to set. In this paper, a new estimation method for estimating walking state and ground reaction force of vertical direction by using a motion sensor is proposed. This system is low cost and easy to measure. From output of the sensor, walking state and ground reaction force of vertical direction is estimated by acceleration. Experimental study is carried out to evaluate accuracy of the proposed estimation system. Experimental result of the proposed system is confirmed to be valid.
