心跳
应变计
材料科学
光容积图
制作
信号(编程语言)
可穿戴技术
聚酰亚胺
标度系数
光电子学
可穿戴计算机
计算机科学
声学
纳米技术
嵌入式系统
复合材料
电信
物理
图层(电子)
病理
程序设计语言
替代医学
无线
医学
计算机安全
作者
Do Yeon Kwak,Won-Hyo Kim,Kwang Suk Park,Kunnyun Kim,Aydogan Ozcan
标识
DOI:10.1016/j.bios.2017.03.016
摘要
We demonstrate a flexible strain-gauge sensor and its use in a wearable application for heart rate detection. This polymer-based strain-gauge sensor was fabricated using a double-sided fabrication method with polymer and metal, i.e., polyimide and nickel-chrome. The fabrication process for this strain-gauge sensor is compatible with the conventional flexible printed circuit board (FPCB) processes facilitating its commercialization. The fabricated sensor showed a linear relation for an applied normal force of more than 930 kPa, with a minimum detectable force of 6.25Pa. This sensor can also linearly detect a bending radius from 5mm to 100mm. It is a thin, flexible, compact, and inexpensive (for mass production) heart rate detection sensor that is highly sensitive compared to the established optical photoplethysmography (PPG) sensors. It can detect not only the timing of heart pulsation, but also the amplitude or shape of the pulse signal. The proposed strain-gauge sensor can be applicable to various applications for smart devices requiring heartbeat detection.
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