压力传感器
信号(编程语言)
光容积图
材料科学
计算机科学
灵敏度(控制系统)
波形
生物医学工程
桡动脉
手腕
声学
脉搏(音乐)
电子工程
计算机视觉
工程类
机械工程
动脉
医学
外科
电信
物理
探测器
滤波器(信号处理)
程序设计语言
雷达
作者
Qiupeng Lin,Jun Huang,Junlong Yang,Yi Huang,Yifan Zhang,Yueji Wang,Jianming Zhang,Yan Wang,Linlin Yuan,Minkun Cai,Xingyu Hou,Weixing Zhang,Yunlong Zhou,Shiguo Chen,Chuan Fei Guo
标识
DOI:10.1002/adhm.202001023
摘要
Abstract The pulse is a key biomedical signal containing various human physiological and pathological information highly related to cardiovascular diseases. Pulse signals are often collected from the radial artery based on Traditional Chinese Medicine, or by using flexible pressure sensors. However, the wrist wrapped with a flexible pressure sensor exhibits unstable signals under hand motion because of the concave surface of the wrist. By contrast, fingertips have a convex surface and therefore show great promises in stable and long‐term pulse monitoring. Despite the promising potential, the fingertip pulse signal is weak, calling for highly sensitive detecting devices. Here, a highly sensitive and flexible iontronic pressure sensor with a linear sensitivity of 13.5 kPa −1 , a swift response, and remarkable stability over 5000 loading/unloading cycles is developed. This sensor enables stable and high‐resolution detection of pulse waveform under both static condition and finger motion. Fingertip pulse waveforms from subjects of different genders, age, and health conditions are collected and analyzed, suggesting that fingertip pulse information is highly similar to that of the radial artery. This work justifies that fingertip is an ideal platform for pulse signals monitoring, which would be a competitive alternative to existing complex health monitoring systems.
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