JSSC 2020第11期Medical & Bio0.18-µmBiosignal

A Batteryless Motion-Adaptive Heartbeat Detection System-on-Chip Powered by Huma

利用人体热能供电的无电池自适应心跳检测SoC

0.18-µm CMOS, 20 µW最小输入功率, 20 mV输入电压, 0.5°C温度梯度

无电池心跳检测热电发电机自适应阈值穿戴设备

▸基于人体热能的无电池供电

▸采用脉宽锁定环的自适应阈值架构

▸集成热电发电机和升压转换器的电源管理系统

Abstract

This article presents a batteryless heartbeat detec- tion system-on-chip (SoC) powered by human body heat. An adaptive threshold generation architecture using a pulsewidth- locked loop (PWLL) is developed to detect heartbeats from electrocardiogram (ECG) in the presence of motion artifacts. The sensing system is autonomously powered by harvesting thermal energy from human body heat using a thermoelectric generator (TEG) coupled to a low-voltage, self-starting boost converter and integrated power