Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 28, 2023 - July 01, 2023
If elderly people fall, the fear of falling may lead to decreased activity and abnormal gait, which may increase the risk of falling over the long term. Falls often occur during the terminal swing when the heel just before contact with the ground. In this study, we develop a detection algorithm for the terminal swing that does not depend on walking speed using 6-axis sensor. We propose the terminal swing detection algorithm that focuses on angular velocity in the direction of vertical and acceleration in the direction of travel. We used motion capture to verify that the onset of the terminal swing can be detected when the tibia becomes vertical. As a result, it was possible to detect a mean absolute error of 66.1ms or less at walking speeds of 2km/h to 5km/h.
