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Arterial stiffness is causing the serious problems for human who is suffered from hypertension and metabolic syndrome. So it isimportant that measure the arterial stiffness for early prevention. Many researches point out that pulse wave velocity(PWV) is the reliableand simple method to predict arterial stiffness. In this paper, we developed the sensing parts that detect the pulse wave and ECG by usingpiezoelectric film and conductive textile with elastic band. Our system could detect 3ch pulse wave and ECG. Simultaneously, ouralgorithm 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 thedevices. In conclusion, we assume that the suggested sensor could be more comfortable and faithful method for arterial stiffness.

Fabrication and Evaluation of Sensor for Measuring Pulse Wave Velocity using Piezo Film and Conductive Textile