基于接触力和汗水的基础上,描述干式电子织物电极的阻抗性能
Vignesh Ravichandran1, Izabela Ciesielska-Wrobel2, Md Abdullah Al Rumon1
1Department of Electrical, Computer and Biomedical Engineering, University of Rhode Island, Kingston, RI 02881, USA.
Biosensors
|July 28, 2023
概括
干式电子织电极显示出不同阻抗与水分. 针织电极E7和刺的E2/E6为可穿戴生物潜能监测提供了卓越的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 可穿戴技术可穿戴技术
背景情况:
- 生物电位电极对于捕获ECG,EMG和EEG等重要信号的智能可穿戴设备至关重要.
- 干式电子织电极为传统湿式电极提供了一种舒适的替代方案,用于持续监控.
研究的目的:
- 在不同的湿度和接触力条件下评估各种干式电子织物电极的阻抗特性.
- 在心电图 (ECG) 数据采集过程中评估选定的电极的信号噪声比 (SNR).
主要方法:
- 测试了六个干式电子织物电极 (E1-E6) 和一个针织电极 (E7) 的阻抗.
- 使用湿度管理测试仪应用合成汗水,在暴露前后测量阻抗,并在24小时干燥后测量阻抗.
- 在健康参与者身上评估了ECG信号质量和SNR.
主要成果:
- 最初,电极E7,E5和E2的阻抗低于200欧姆,在暴露后降至120欧姆以下.
- 刺电极E6和E4在暴露于水分后显示阻抗下降超过25%.
- 电极E1,E2,E3和E4在干燥后阻抗增加了30%以上.
结论:
- 针织电极E7和刺电极E2和E6表现出优越的阻抗,水分处理和心电图信号质量.
- 这些发现突出了可穿戴应用中先进生物电位电极的有希望的设计策略.
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