Open AccessOptimization of a Wearable Device for Core Body Temperature Monitoring Based on the Dual-Heat-Flux Model
Author(s) -
Jiayueyuan Fang,
Congcong Zhou,
Xuesong Ye
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/677/3/032006
Subject(s) - heat flux , frustum , cylinder , core (optical fiber) , mechanical engineering , materials science , mechanics , computer science , simulation , heat transfer , composite material , engineering , physics
This paper presents an improved structure of core body temperature (CBT) probe based on the dual-heat-flux (DHF) principle. A new frustum-shaped architecture of sensor, instead of traditionally cylinder-shaped, is presented to decrease the transverse heat flow which is the major obstacle to fit the DHF theory. Besides, finite element simulation is conducted to compare the heat concentration in those two structures and reveal the relationship between the measuring accuracy and the thermal conductivity of the shell. Nylon Glass Fiber Mixture (NGFC) is introduced to improve the performance of probes based on the above simulation. Finally, to verify the effectiveness of the models simulated accordingly, wearable probes based on CBT monitoring system is presented and hot-plate (produced by Thermo Scientific) experiments are carried out. The new probe shows an error, i.e. 0.09±0.05°C, at different CBTs, which promises higher stability within acceptable error in congeneric researches.