摘要
研制了基于一种多壁碳纳米管(MWCNT)和粘性聚二甲基硅氧烷(PDMS)混合物干电极的可穿戴生理信号采集系统。干电极主体采用聚酰亚胺(PI)-铜箔-聚酰亚胺三明治结构,表面具有MWCNT掺杂的粘性PDMS涂层,可直接粘附于表皮采集生理信号,并提供了良好的接触性能。采样系统包括发送端及接收端,使用ADS1299集成模拟前端进行采集及模数转换。信号传输使用蓝牙协议,整体尺寸为45 mm×20 mm×10 mm,使用锂电池供电,数据可直接使用MATLAB程序接收并进行分析。系统使用CNT/aPDMS电极采样的信号质量和传统湿电极获取的信号质量相当。
A wearable physiological signal acquisition system based on multiwalled carbon nanotube(MWCNT)and viscous PDMS composite dry electrodes is developed.The dry electrode body is made of polyimide(PI)-copper-polyimide sandwich structure and an adhesive PDMS coating with MWCNT,which can directly adhere to the epidermis,to collect physiological signals,and provide good contact performance.The sampling system includes the transmitting end and the receiving end,and uses the ADS1299 integrated analog front-end for acquisition and analog-digital conversion(ADC).The signal transmission uses Bluetooth protocol and the overall size of the transmitting end is 45 mm×20 mm×10 mm.The system is powered by lithium battery.The data can be directly received by MATLAB program and analyzed.The signal quality acquired by the CNT/aPDMS electrode is comparable to that obtained by conventional wet electrode.
作者
杨汉嘉
赵楠
高鲲鹏
廖璐璐
刘景全
YANG Hanjia;ZHAO Nan;GAO Kunpeng;LIAO Lulu;LIU Jingquan(National Key Laboratory of Science and Technology on Micro/Nano Fabrication,Department of Micro/Nano Electronics,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《传感器与微系统》
CSCD
2020年第1期60-62,67,共4页
Transducer and Microsystem Technologies
基金
国家自然科学基金资助项目(51475307)
关键词
碳纳米管
柔性电极
可穿戴
生理信号
carbon nano-tube
flexible electronics
wearable
physiological signals
