Prediction of Individual Dynamic Thermal Sensation in Subway Commute Using Smart Face Mask

Autor: Md Hasib Fakir, Seong Eun Yoon, Abdul Mohizin, Jung Kyung Kim
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Biosensors, Vol 12, Iss 12, p 1093 (2022)
Druh dokumentu: article
ISSN: 2079-6374
DOI: 10.3390/bios12121093
Popis: Wearable sensors and machine learning algorithms are widely used for predicting an individual’s thermal sensation. However, most of the studies are limited to controlled laboratory experiments with inconvenient wearable sensors without considering the dynamic behavior of ambient conditions. In this study, we focused on predicting individual dynamic thermal sensation based on physiological and psychological data. We designed a smart face mask that can measure skin temperature (SKT) and exhaled breath temperature (EBT) and is powered by a rechargeable battery. Real-time human experiments were performed in a subway cabin with twenty male students under natural conditions. The data were collected using a smartphone application, and we created features using the wavelet decomposition technique. The bagged tree algorithm was selected to train the individual model, which showed an overall accuracy and f-1 score of 98.14% and 96.33%, respectively. An individual’s thermal sensation was significantly correlated with SKT, EBT, and associated features.
Databáze: Directory of Open Access Journals