Self-Powered Wearable Electrocardiography Using a Wearable Thermoelectric Power Generator

A self-powered wearable electrocardiography (ECG) system is demonstrated. The ECG sensing circuit was fabricated on a flexible PCB and powered by a wearable thermoelectric generator (w-TEG) using body heat as the energy source. To allow the TEG to obtain a large temperature difference for high power generation and also be wearable, a polymer-based flexible heat sink (PHS) comprised of a superabsorbent polymer (SAP) and a fiber that promotes liquid evaporation was devised. Parametric studies on the PHS were conducted, and the structure of the w-TEG was also optimized for the PHS. The output power density from the w-TEG with the PHS was over 38 mu W/cm(2) for the first 10 min and over 13 mu W/cm(2) even after 22 consecutive hours of driving the circuits. This power level is high enough to continuously drive the wearable ECG system, including the sensors and the power management circuits.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-03
Language
English
Article Type
Article
Keywords

DESIGN; ENERGY; DEVICES; ELECTRONICS; FABRICATION; EFFICIENCY; SENSORS; SYSTEM; FILM

Citation

ACS ENERGY LETTERS , v.3, no.3, pp.501 - 507

ISSN
2380-8195
DOI
10.1021/acsenergylett.7b01237
URI
http://hdl.handle.net/10203/241350
Appears in Collection
EE-Journal Papers(저널논문)
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