加速度センサを用いた歩行計測によるリハビリテーションプロセスの評価

抄録

Gait is one of the common motion for human. The purpose of this research is to assess the rehabilitation process for the patient injured right knee by gait measurement using accelerometer. The sensor was attached to lower back of the subject. Subjects were instructed to walk on the hallway with metronome. The metronome was set to 116 bpm. We estimated the center of mass (CoM) after calculating the second integral of the acceleration date obtained from the experiment. Relative displacement fitted regression formula is calculated because integration error noise and drift exude calculated displacement. The result shows the healthy subjects gait drawing a symmetry CoM. The patient gait draws oblique lines, because the patient walked with protecting right knee. The patient gait comes to healthy subject's trajectory because the patient putting weight on right by rehabilitation effects. We could assess the gait improvement by using our proposal method.