A study on gait analysis method using wearable sensor system

Abstract

This study deals with the application to gait analysis of the established method in the previous studies. This method estimates the position vector from the joint to the sensor. We extended the estimation method using the output of the wearable force plates. The condition contacting to ground and the stationary condition are detected by using the resultant force and the resultant angular velocity in the wearable force plate. The estimation method is performed by limiting to between implementing the conditions. We conducted the measurement experiment the gait measurement by the subject attaching the wearable sensor system, and we apply the method to the measurement information. The estimation results indicated the position vector from the knee joint to the sensor attached to the lower thigh. The proposed method can extend to parameter estimation in total body. Therefore, the method can be used to the development of more simply motion measurement method by wearable sensor system.