双极信号与合线圈对进行诱导合,用于模拟被动心电图传感器,使用PPy涂层的pvCNT干电极
Mohammad Abu-Saude1, Bashir I Morshed2
1Department of Electrical and Computer Engineering, University of Memphis, Memphis, TN 38152, USA.
Sensors (Basel, Switzerland)
|June 10, 2023
概括
这项研究引入了一种无电池无线心电图 (ECG) 传感器,使用了新型的结合线圈和聚烯涂层碳纳米管电极. 该系统能够长期无捕获差异生物信号,而无需功率限制.
科学领域:
- 生物医学工程 生物医学工程
- 传感器技术 传感器技术
- 无线通信无线通信
背景情况:
- 无线捕获ECG等差异生物信号具有挑战性,特别是在没有电池的系统中.
- 现有的解决方案通常需要电源,这限制了长期监控应用.
研究的目的:
- 开发一种新的无线系统,用于从完全被动 (无电池) 传感器捕获模拟差分信号.
- 为了整合一个新的结合线圈设计与先进的干电极,用于无线电阻模拟被动 (WRAP) ECG传感器.
主要方法:
- 设计了一台WRAP心电图传感器,采用了一种新型的合线圈对,用于无线差分信号传输.
- 集成传感器与导电聚合物聚烯 (PPy) 涂层的垂直碳纳米管 (pvCNT) 干电极.
- 采用双门耗尽模式的MOSFET来将生物潜能信号转换为电阻变化,从而实现常态信号拒绝 (17.24 dB).
主要成果:
- 成功演示了使用新型WRAP传感器和PPy涂层pvCNT电极的零功耗,无电池的心电图捕获系统.
- 通过振幅调制的射频载波信号 (8.37 MHz) 实现了差异信号的无线传输,并具有信封检测.
- 收集和处理了ECG信号,显示了与商业对应器可比的性能.
结论:
- 开发的无电池 WRAP ECG 传感器为长时间的生理监测提供了一个有前途的解决方案.
- 新型结合线圈和先进的干电极的集成为不引人注目的,身上的电子电路补丁铺平了道路.
- 这项技术具有持续,稳定的心电图监测的巨大潜力,无需频繁更换电池.
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