Compact Vital-Sensing Band with Uninterrupted Power Supply for Core Body Temperature and Pulse Rate Monitoring

• DOI: 10.1021/acssensors.4c01456
• Publication Date: 2024-11-01T09:29:54Z
• Authors: Salman Khan; Jiyong Kim; Tae-Uk Kang; Gimin Park; Sungbin Lee; Jin-Woo Park; Woochul Kim
• Keywords: Pulse rate

Although wearable devices for continuous monitoring of vital signs have undergone significant advancements, their need frequent recharging precludes operation, potentially leading to adverse outcomes being overlooked. Additionally, the scattered locations sensors hamper wearability. Herein, we present a compact vital-sensing band with uninterrupted power supply designed core body temperature (CBT) and pulse rate. The band─which comprises two sensors, source (i.e., flexible thermoelectric generator (TEG) battery), circuit─is worn on forearm. CBT is calculated by measuring skin heat flux, while triboelectric nanogenerator-based self-powered pressure sensor utilized rate monitoring. TEG unit that converts into electricity, accumulating total energy 314 mJ (100%). Out this energy, only 43.2 (7.2%) measurements, remaining 270.80 (92.8%) stored in battery. This enables reliable operation band, highlighting its potential use healthcare applications.