抄録
The purpose of this paper is to investigate a method for detecting a fall-down event based on body's vertical displacement. The vertical displacement is computed from data of a wearable device with a tri-axial accelerometer and three single axis gyroscopes. In order to remove the intrinsic offsets in these sensors, an ofset compensation method is proposed. The effectiveness of the fall-down detection is evaluated by experiments with subjects. Experiments of various kinds of fall-down are carried out. As a result, a threshold to detect the fall-down is fbund. This threshold is 70%of the distance from the ground to the mounted device.
