Abstract
Pulse wave monitoring is critical for the evaluation of human health. In this paper, a wearable multi-sensor pulse wave monitoring system is proposed and demonstrated. The monitoring system consists of a measuring unit and an analog circuit processing unit. The main part of the measuring unit is a flexible printed circuit board (PCB) with a thickness of 0.15 mm, which includes three micro-electromechanical system (MEMS) pressure sensors softly packaged by polydimethylsiloxane (PDMS), a blood oxygen detector and a MEMS three-axis accelerometer. The MEMS pressure sensors，the blood oxygen detector and the accelerometer are fixed on the expected locations of the flexible PCB. The analog circuit processing unit includes a power supply module, a filter and an amplifier. The pulse waves of two volunteers are detected by the monitoring system in this study. The output signals of the analog circuit processing module are processed and analyzed. In the preliminary test, the time delay of the three pressure pulse waves has been detected and the calculated pulse wave velocities (PWVs) are 12.50 and 11.36 m/s, respectively. The K value, related to the area of the pulse wave, can be obtained. Both the PWV and K value meet the health parameter standards.
Highlights
Pulse diagnosis is one of the important diagnostic techniques in traditional Chinese medicine.The theory of pulse diagnosis has been applied and studied by many Chinese medicine practitioners.Many scholars have studied the pulse wave and quantitatively analyzed pulse wave information, including velocity, amplitude and so on, which is closely related to some diseases of the human body, such as diabetes, renal disease and arteriosclerosis [1,2,3,4,5]
With one’s fingers placed on the wrist, one can feel the pulse of the artery, which is the traditional way of Chinese medicine pulse diagnosis
The pressure pulse wave and the volume pulse wave of the radial radial artery and the movement state of the wrist can be detected by the wearable pulse pulse wave wave of of the the radial artery artery and and the the movement movement state state of of the the wrist wrist can can be be detected detected by by the the wearable wearable pulse wave monitoring system
Summary
Pulse diagnosis is one of the important diagnostic techniques in traditional Chinese medicine. Reference [7] reported a microfluidics-based flexible skin-coupled personal wearable ambulatory pulse wave velocity monitoring system [4]. T. Kaneko proposed a piezoresistive cantilever on wearable electrocardiogram (ECG) and continuous blood pressure monitoring system for liquidcardiovascular that can measure pulse at various points on the humancantilever body with sensitivity diseases [9].waves. A blood oxygen detector is used to detect the volume of the pulse wave and a is used to monitor the movement of the wrist for compensation. By fixing the flexible PCB a small and wearable pulse wave monitoring system has been developed. The panorama of the system on the glove structure, a small and wearable pulse wave monitoring system has been developed.
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