Thermoregulation of human hands in cold environments and its modeling approach: A comprehensive review

Zhang, Mengying; Li, Rui; Wu, Yulin; Song, Guowen

doi:10.1016/j.buildenv.2023.111093

Cited by 3 publications

(2 citation statements)

References 103 publications

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“…Based on the calibration results shown in Figure 7e, the interrogator can decouple the temperature-sensing information from the SAW resonant frequency signal, and finally display the real-time temperature monitoring data on the mobile phone as shown in Figure 7f. It is clear that the monitoring temperature is around 25 • C rather than 37 • C, which can be attributed to the following reasons: (1) The temperature of the human hand is usually lower than the body temperature and is affected by the indoor environment temperature [35]. (2) In the preliminary demonstration, the heat conduction between the human body and the SAW temperature sensor has not been optimized, and integrating flexible materials with high heat conductivity can solve this problem.…”

Section: Demonstration Of Wearable Body Temperature Monitoringmentioning

confidence: 99%

“…reasons: (1) The temperature of the human hand is usually lower than the body temperature and is affected by the indoor environment temperature [35]. (2) In the preliminary demonstration, the heat conduction between the human body and the SAW temperature sensor has not been optimized, and integrating flexible materials with high heat conductivity can solve this problem.…”

Section: Demonstration Of Wearable Body Temperature Monitoringmentioning

confidence: 99%

See 1 more Smart Citation

Rational Design of a Surface Acoustic Wave Device for Wearable Body Temperature Monitoring

Xie,

Deng,

Chen

et al. 2024

Micromachines

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Continuous monitoring of vital signs based on advanced sensing technologies has attracted extensive attention due to the ravages of COVID-19. A maintenance-free and low-cost passive wireless sensing system based on surface acoustic wave (SAW) device can be used to continuously monitor temperature. However, the current SAW-based passive sensing system is mostly designed at a low frequency around 433 MHz, which leads to the relatively large size of SAW devices and antenna, hindering their application in wearable devices. In this paper, SAW devices with a resonant frequency distributed in the 870 MHz to 960 MHz range are rationally designed and fabricated. Based on the finite-element method (FEM) and coupling-of-modes (COM) model, the device parameters, including interdigital transducer (IDT) pairs, aperture size, and reflector pairs, are systematically optimized, and the theoretical and experimental results show high consistency. Finally, SAW temperature sensors with a quality factor greater than 2200 are obtained for real-time temperature monitoring ranging from 20 to 50 °C. Benefitting from the higher operating frequency, the size of the sensing system can be reduced for human body temperature monitoring, showing its potential to be used as a wearable monitoring device in the future.

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Section: Demonstration Of Wearable Body Temperature Monitoringmentioning

confidence: 99%

Section: Demonstration Of Wearable Body Temperature Monitoringmentioning

confidence: 99%