Accurate Prediction of Smartphones’ Skin Temperature by Considering Exothermic Components
Jihoon Parka, Seokjun Leeb and Hojung Chac
Dept. of Computer Science, Yonsei Univercsty, Korea
ajihoonpark@yonsei.ac.kr
bseokjunlee@yonsei.ac.kr
chjcha@yonsei.ac.kr
ABSTRACT
Smartphones’ surface temperature, also called skin temperature, can rapidly heat up in certain cases, and this causes a variety of safety problems. Therefore, the thermal management of smartphones should consider the skin temperature, and its accurate prediction is important. However, due to the complicated relationship among the many exothermic components in the device, predicting skin temperature is extremely difficult. In this paper, we develop a thermal prediction model that accurately predicts the skin temperature of a mobile device. In an experiment with smartphones, we show that the proposed model achieves an accuracy of 98%, with a ±0.4 °C margin of error. To the best of our knowledge, our work is the first to reveal the complex relationship between the various components inside of a smartphone and its skin temperature.
Keywords: Thermal management, Skin temperature prediction.
