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Correct Posture Guidance System using 3-axis Acceleration Sensor for Scoliosis Patient

3축 가속도 센서를 이용한 자세 교정 유도 시스템

  • 안양수 (전북대 대학원 전자정보공학부) ;
  • 김거식 (전북대 대학원 전자정보공학부) ;
  • 서정환 (전북대 의학전문대학원 재활의학교실) ;
  • 송철규 (전북대 전기전자컴퓨터공학부, 영상정보신기술연구소)
  • Published : 2010.01.01

Abstract

In this study, we designed a device for consecutively observing position, utilizing 3-axises acceleration sensor. This method offer to check his or her wrong position and developed could to help derived a position appliance. And, we developed a Cobb's angle value in three dimensional using 3-axises acceleration sensor. A proposed device with integrated accelerometers, which can detect postural changes in terms of curvature variation of the spine in the sagittal and coronal planes, has been developed with intention to facilitate posture training. The proposed device was evaluated with 3 normal subjects daily activities. We evaluated the performance of our designed device as calculating the correlation coefficients and mean errors between the angle measured by an electro-goniometer and that estimated by a gravity accelerometer and verified the accuracy and sensitivity. The results showed that the angle obtained from the proposed device revealed a linear characteristic at the range of $\pm60^{\circ}$(correlation coefficient 0.99, error range $\pm2^{\circ}$). We demonstrated that our device could detect the changes of the motion in upper trunk accurately. Also, our device showed good potential for treatment of the patients with scoliosis and prevention of the unbalance position during a daily life.

References

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