A 3.9mW 25-Electrode Reconfigured Thoracic Impedance/ECG SoC with Body-Channel Transponder

📋 论文概要

该论文提出了一款功耗3.9mW、集成25个电极的可重构胸部阻抗/ECG SoC，并带有体信道收发器。解决了现有可穿戴体感网络（WBSN）只能感知ECG信号且网络覆盖有限的问题，通过同时监测胸部阻抗变化（TIV）提供血流动力学信息。

💡 主要创新点

• 提出了一种25电极可重构的SoC架构，可同时采集ECG和胸部阻抗（TIV）信号，提供更全面的心血管健康信息。
• 集成了低功耗体信道收发器，实现了短距离无线通信，降低了系统功耗至3.9mW。
• 通过可重构的前端电路，灵活配置电极以优化信号质量，适应不同的身体活动和佩戴位置。

🏷 关键词

📄 原文摘要

cardiovascular-related disease [1] with wearable body sensor network (WBSN) [2-3]. The WBSN introduced in [3] monitored ECG at maximum 48 points, and transferred data using arrayed inductive link for cm-range wireless inter-connectivity. However, most of the previous attempts were limited to sense only ECG signals at limited points [2] on the body with limited network coverage [3]. Thoracic impedance variance (TIV) from the change of aortic blood volume and velocity at each cardiac cycle provides important hemodynamic information (stroke volume, cardiac output). Combined with ECG signals from more than 6 points, it enables the early detection of abnormal symptoms of pandemic diseases like hypertension and heart failure so that the patients can take prophylactic measures [6]. In spite of its importance, the TIV detection was not realized in WBSN

👥 作者与机构

Long Yan, Joonsung Bae, Seulki Lee, Binhee Kim, Taehwan Roh,

Kiseok Song, Hoi-Jun Yoo KAIST, Daejeon, Korea Recently, wearable heart monitoring systems have been developed for