刺しゅう式自己容量型体圧・接近センサを用いた 介護動作計測システムの開発

抄録

This study aims to enhance caregiving skills to alleviate the burden on novice caregivers， addressing the high cost and spatial demands of traditional motion-capture systems. We introduce a novel， cost-effective measurement system using capacitive sensors crafted from conductive embroidery fibers for assessing transfer caregiving movements. The system's principle， construction， and durability against washing are detailed， alongside its proficiency in evaluating seating positions and speed. Employing this system， we compare the seating position and velocity of care recipients during transfers between inexperienced caregivers and experts，validating our system against established threedimensional motion-capture systems and force plates. Our findings reveal a correlation between the center of pressure changes and the center of gravity (CoG)， and between the actual seating speed measured by conventional systems and the speed coefficient derived from our sensor outputs. Significant differences in seating speed between novice caregivers and professional therapists were observed. Conclusively， the proposed system effectively measures differences in the care-giving behaviour of novice carers in transferring patients from a bed to a wheelchair in terms of the seating position and velocity.