A 160µW 8-Channel Active Electrode System for EEG Monitoring

📋 论文概要

本文提出了一种160µW的8通道有源电极系统，用于EEG监测，解决了使用干电极时因高接触阻抗导致的干扰问题。该系统通过在有源电极处集成放大器来降低阻抗影响，实现了低功耗和多通道监测。

💡 主要创新点

• 设计了一种低功耗有源电极架构，将放大器集成在电极处，有效降低干电极的高接触阻抗带来的干扰。
• 实现了8通道同时监测，总功耗仅160µW，适合便携式EEG应用。

🏷 关键词

📄 原文摘要

2 imec - Holst Centre, Eindhoven, The Netherlands, Delft University of Technology, Delft, The Netherlands, 3imec, Leuven, Belgium An important drawback of current biopotential monitoring systems is their dependence on gel electrodes, which can dry out, cause skin irritation, and necessitate skilled personnel. These associated drawbacks increase the running costs and significantly hamper their use in consumer healthcare and lifestyle applications. Unfortunately, the use of gel-free, or dry, electrodes increases the electrode-tissue contact impedance, thus exacerbating the effects of interference and cable motion artifacts. A solution is the use of active electrodes, i.e. electrodes in which an amplifier with high input impedance, low noise and good electrode offset rejection is co-integrated (Fig. 17.1.1). Previous active electrodes employed voltage buffers to facilitate the inter-channel gain matching

👥 作者与机构

Jiawei Xu1,2, Refet Firat Yazicioglu3, Pieter Harpe1, Kofi A.A. Makinwa2, Chris Van Hoof3