Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
권호 표지
DOI QR코드

DOI QR Code

A monitoring apparatus for pulse shape of human heartbeats by magnetic impedance sensors

자기 임피던스 센서를 이용한 맥박 측정 장치

  • Kim, Cheong-Worl (Department of Bio-Electronics Engineering, Graduate School, Andong National University) ;
  • Gu, Bon-Ju (Department of Bio-Electronics Engineering, Graduate School, Andong National University) ;
  • Kim, Jong-Seong (Department of Bio-Electronics Engineering, Graduate School, Andong National University)
  • 김청월 (안동대학교 대학원 바이오전자공학과) ;
  • 구본주 (안동대학교 대학원 바이오전자공학과) ;
  • 김종성 (안동대학교 대학원 바이오전자공학과)
  • Published : 2006.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

A monitoring apparatus for pulse shapes of human heartbeats has been developed using an amorphous MI(Magnetic Impedance) sensor. The pulse shapes are successfully obtained from voltage signals due to the variations of magnetic impedance in the amorphous MI sensor, which is attached to a patient's wrist. This voltage signal was fed into a signal processing module to extract the pulse shapes of heartbeats. The signal processing module, which is proposed to detect a weak variations of impedance in MI sensor under a noisy measurement environment, consists of a high frequency current source, an amplifier stage and a synchronous detection circuit. To evaluate the characteristics of a newly developed apparatus, various experiments were performed. The experimental results show that the developed apparatus could be used as a diagnosis tool for traditional Korean medicine with further systematic clinical studies.

Keywords

References

  1. 김철기, '자기적 방법에 의한 맥박 측정기 및 그 측정 방법', 공개특허, 특 2002-0035395
  2. L. P. Shen, T. Uchiyama, K. Mohri, E. Kita and K. Bushida, 'Sensitive stress-impedance micro sensor using amorphous magnetostrictive wire', IEEE Transactions on Magnetics, vol. 33, no. 5, pp. 3355-3357, September, 1997 https://doi.org/10.1109/20.617942
  3. T. Uchiyama, K. Mohri, IEEE Fellow, M. Shinkai, A. Ohshima, H. Hond, T. Kobayashi, T. Wakabayashi and J. Yoshida, 'Position sensing of magnetite gel using mi sensor for brain tumor detection', IEEE Transactions on Magnetics, vol. 33, no. 5, pp. 4266-4268, September, 1997 https://doi.org/10.1109/20.619731
  4. T. Kanno, K. Mohri, T. Yagi, T. Uchiyama, and L. P. Shen, 'Amorphous wire MI micro sensor using C-MOS IC multivibrator', IEEE Transactions on Magnetics, vol. 33, no. 5, pp. 3358-3360, September, 1997 https://doi.org/10.1109/20.617943
  5. 허진, 김영화, 신광호, 사공건, 'CoZrNb막을 이용한 MI센서 소자의 제작 및 특성', 전기전자재료학회논문지, 제17권, pp. 52-58, 2004 https://doi.org/10.4313/JKEM.2004.17.1.052
  6. 김영학, 신광호, '자기임피던스 효과를 이용한 자기센서', 전기전자재료학회지, 제14권, 제5호, pp. 25-32, 2001
  7. 유영재, '3축 자기센서를 이용한 자기차선상의 차량위치 및 방향 추정', 센서학회지, 제9권, 제5호, pp. 40-46, 2000
  8. 신광호, 박경일, 송재연, 김영학, 사공건, 'Co계 아몰퍼스리본을 이용한 자계센서', 센서학회지, 제12권, 제5호, pp. 205-210, 2003 https://doi.org/10.5369/JSST.2003.12.5.205