超音波による歩幅の測定システム(3部運動の解析)

概要

論文の詳細を見る
In a study of the human gait, it is important to know about variations in stride. The author has formulated a measurement system of stride during gait by using an ultrasonic technique. This measurement system is composed of a pair of shoes, a device that measures human gait stride, and a microcomputer. Each shoe has an ultrasonic wave radiator attached to its toe, and an ultrasonic microphone to its heel. The device for measuring stride was made from a digital circuit assembled with CMOS IC. This device is 650g in weight. The measurable time for one battery charge cycle was about 4 hours. Output signals of this device are serial electric signals with CMOS level, serial optic signals by LED, and audio frequency shift keying signals in the form of RS 232 C standard. The user can select one of these output signals and collect them on the diskette of a microcomputer. As a result of the experiment, the following conclusions were obtained: 1. Measureable distance from the right toe to the left heel or from the left toe to the right heel was up to 700mm. 2. This system measures only one-dimentional distance; however, the dynamic variations in distance during gait are measurable except for a period when one leg is passed by the other. 3. This system is useful for outdoor working.
バイオメカニズム学会の論文
1984-04-25