Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Fabrication and Evaluation of Sensor for Measuring Pulse Wave Velocity using Piezo Film and Conductive Textile

압전 필름과 전도성 섬유를 이용한 맥파 전달 속도 측정을 위한 센서의 제작 및 성능평가

  • Kim, Jung-Chae (Graduate School of Biomedial Engineering, Yonsei University) ;
  • Jee, Sun-Ha (Department of Epidemiology and Health Promotion, Graduate School of Public Health, Yonsei University) ;
  • Yoo, Sun-Kook (Department of Medical Engineering, College of Medicine, Yonsei University)
  • 김정채 (연세대학교 일반대학원 생체공학협동과정) ;
  • 지선하 (연세대학교 보건대학원 역학건강증진학과) ;
  • 유선국 (연세대학교 의과대학 의학공학교실)
  • Received : 2011.11.05
  • Accepted : 2012.02.04
  • Published : 2012.03.31
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Abstract

Arterial stiffness is causing the serious problems for human who is suffered from hypertension and metabolic syndrome. So it is important that measure the arterial stiffness for early prevention. Many researches point out that pulse wave velocity(PWV) is the reliable and simple method to predict arterial stiffness. In this paper, we developed the sensing parts that detect the pulse wave and ECG by using piezoelectric film and conductive textile with elastic band. Our system could detect 3ch pulse wave and ECG. Simultaneously, our algorithm extracts the features for calculating the delays among pulse waves. The delays are the significant parameter to estimate PWV, thus we design the experiment for evaluating the performance of our sensing parts. The reference is PP-1000(HanByul Meditech, Korea) that is good for performance evaluation. As a result, the start point of the pulse wave was the most reliable feature for comparing with PP-1000(r=0.691, P=0.00). The results between two operators showed that there is only a slight difference in the reproducibility of the devices. In conclusion, we assume that the suggested sensor could be more comfortable and faithful method for arterial stiffness.

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