文献类型：期刊文献

英文题名：Piezoelectret-Based Dual-Mode Flexible Pressure Sensor for Accurate Wrist Pulse Signal Acquisition in Health Monitoring

作者：Qiu, Xunlin[1]; Gao, Tiantian[1]; Xu, Peng[1]; Hu, Zheng[1]; Yan, Jianjun[1]; Xiang, Yanxun[1]; Xuan, Fu-Zhen[1]

机构：[1] Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240255063)

语种：英文

外文关键词：Piezoelectricity - Signal detection - Wearable sensors

摘要：Acquirement of high-quality pulse signals has attracted much attention in recent years. Here, dual-mode pressure sensors capable of detecting both static force and dynamic pulse signals are achieved based on piezoelectret films. Thanks to the high piezoelectric sensitivity, piezoelectret sensors can effectively detect ultra-low pressure radial artery pulses. Moreover, due to their anisotropic foam structure, piezoelectrets are highly compressible in the thickness direction. The capacitance of the piezoelectret sensors is taken for monitoring the static force applied on wrist to compress the radial artery. Our results show that the profile of the detected pulse signals strongly depends on the static force. Clear pulse signals with detailed information are detected at moderate optimal static force. This work showcases that single piezoelectret-based pressure sensors can be employed for multimodal measurement for both static and dynamic pressures, exhibiting great potential in flexible and wearable sensors for accurate pulse detection in health monitoring. ? 2024, The Authors. All rights reserved.