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本文提出了一款利用人体热能自供电的心跳检测系统级芯片(SoC),功耗仅20µW,可实现自维持的穿戴式医疗设备,解决了电池供电设备在长期连续监测中的续航问题。
*Equally-Credited Authors (ECAs) Wearable devices are expanding beyond consumer and entertainment applications, including continuous monitoring of vital signs for medical diagnostics, due to extended ambulatory measurement capabilities compared to fixed clinical environments. Continuous long-term use is difficult for battery-powered devices in a wearable form-factor, whereas ambient energy harvesting promises power autonomy to enable indefinite lifetime for true battery-less devices. However, accurate vitals measurement under real-world motion conditions is energy intensive [1], making it difficult to provide reliable and medically relevant data using typical micro-watt power levels available from energy harvesting. In this work, we present a battery-less heartbeat monitoring system that operates continuously using only energy harvested from human body heat. The systemon-chip (SoC) architecture shown in Fig. 26.5.1 includes a power management
Soumya Bose*, Boyu Shen*, Matthew L. Johnston
Oregon State University, Corvallis, OR