A 75µW Real-Time Scalable Network Controller and a 25µW ExG Sensor IC for Compact Sleep-Monitoring Applications

📋 论文概要

本文提出了一款用于紧凑睡眠监测应用的超低功耗系统，包括一个75µW可扩展网络控制器和一个25µW ExG传感器IC。该系统解决了现有睡眠监测设备体积大、功耗高的问题，实现了5克重量和低于500µW的总功耗。

💡 主要创新点

• 实现了极低功耗的传感器IC（25µW）和网络控制器（75µW），显著降低系统总功耗至sub-500µW。
• 采用可扩展的网络控制器架构，支持多种ExG信号（EEG/EMG/EOG/ECG）的灵活管理。
• 系统集成度高，体积小巧（5克），适合睡眠佩戴，克服了以往设备笨重的缺点。

🏷 关键词

📄 原文摘要

Recently, a wearable body-sensor network realized continuous sleep monitoring by ExG (EEG, EMG, EOG, and ECG) extraction from a sleeper’s face [1]. At least 14 sensors were placed on the face, and were managed by a network controller for sleep monitoring. However, the system in [2] was too bulky and heavy (127×63.5×28mm3, 210g) to wear during sleep, and consumed high power (>100mW). Another system used a CMOS IC sensor for smaller power consumption (5 to 10mW/sensor), but it was still inconvenient to wear due to its cumbersome size (49×19×6mm3) [3]. This paper presents a 5g sub-500μW compact sleep-monitoring system based on a low-power network controller and ExG sensors, and Planar Fashionable Circuit Board (P-FCB) technology [4]. The entire sleep monitor operates on a 1.5V 10mAh single tiny coin battery (φ=5.8mm, T=2.1mm, 200mg) stacked on the controller chip. The power dissipation of 14 sensors and a controller is below 425μW, which is <1.5% of previous works [2-3]. Its low power con

👥 作者与机构

Seulki Lee, Long Yan, Taehwan Roh, Sunjoo Hong, Hoi-Jun Yoo

KAIST, Daejeon, Korea