Journal of the Institute of Electronics Engineers of Korea SC (전자공학회논문지SC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Design of Digital Inclinometer for Measuring Postural Balance

자세 균형 측정을 위한 디지털 경사계 설계

  • Published : 2008.01.25
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Abstract

In this paper, a digital inclinometer to measure the angle and acceleration signals of subject laid on Roll was designed. The designed system consists of a tilt sensor, biaxial accelerometer, single chip microprocessor and Bluetooth module. The designed digital inclinometer was easy to handle and to wear. To evaluate the performance of the system, we measured simultaneously the angle and acceleration signals from the 3 subjects on the Roll using two instruments which are ZEBRIS and designed system. The measured signals were processed by statistical method and then the correlation coefficient of 0.93 was shown. From the results, the designed digital inclinometer is shown to be useful in assessment of body movement.

본 논문에서는 롤(Roll)에 누워 있는 피검자의 각도와 가속도 신호를 측정하기 위한 디지털 경사계 설계하였다. 개발된 시스템은 기울기 센서(tilt sensor), 2축 가속도 센서(biaxial accelerometer), 마이크로프로세서(single chip microprocessor)와 블루투스(BlueTooth module)로 구성된다. 개발된 디지털 시스템은 다루기 쉽고 쉽게 착용 할 수 있다. 시스템을 성능을 평가하기 위해서 Roll위의 3명의 피검자로부터 각도와 가속도 신호는 ZEBRIS와 디지털 경사계에 의해서 동기화하여 측정하였다. 측정된 신호는 정량적인 방법에 의해서 처리되며 그때의 상관계수가 0.93임을 보여 준다. 이와 같은 결과로부터 디지털 경사계는 몸의 움직임을 평가하는데 유용할 것으로 보여 진다.

Keywords

References

  1. Jung-Byung Chae, Byung-Jo Kim and Sung-Soo Bae, 'A study on the control factors of posture and balance,' The Journal of Korean Society of Physical Therapy, Vol. 13, No. 2, pp. 421-431, 2001
  2. H. Cohen, C. A. Blatchly and L. L. Combash, 'A study of the clinical test of sensory interaction and balance,' Physical Therapy, Vol. 73, pp. 346-354. 1993 https://doi.org/10.1093/ptj/73.6.346
  3. G. L. Almeida, R. L. Carvalho and V. L. Talis, 'Postural strategy to keep balance on the seesaw,' Gait & Posture, Vol. 23, no. 1, pp 17-21, 2006 https://doi.org/10.1016/j.gaitpost.2004.11.020
  4. Anne-Marie Ainscough-Potts, Matthew C Morrissey and Duncan Critchley, 'The response of the transverse abdominis and internal oblique muscles to different postures,' Manual Therapy 11, pp 54-60, 2006 https://doi.org/10.1016/j.math.2005.03.007
  5. A. Shumway-Cool, D. Anson and S. Haller, 'Effect on balance and locomotion on hemiparetic adult,' Arch. Phys. Med. Rehabil, Vol. 69, pp.395-400, 1989
  6. 이재영, 이경중, 김영호, 이성호, 박시운, '가속도계를 이용한 편마비 환자의 보행 분석 알고리즘 개발,' 전자공학회논문지, 제41권, SC편, 4호, 2004
  7. Eva Bernmark and Christina Wiktorin, 'A triaxial accelerometer for measuring arm movement,' Applied Ergonomics 33, pp 541-547, 2002 https://doi.org/10.1016/S0003-6870(02)00072-8
  8. E. Cattrysse, S. Provyn, P. Kool, O, Gagey, J. P. Clarys and P. Van Roy, 'Reproducibility of kinematic motion coupling parameters during manual upper cervical axial rotation mobilization_ A 3-dimensional in vitro study of the atlanto-axial joint', Journal of Electromyography and Kinesiology, accepted 21 June 2007