pp. 2497-2509
S&M2633 Technical Paper https://doi.org/10.18494/SAM.2021.3350 Published: July 27, 2021 Application of Wireless Power Transfer Technologies for Soil Temperature Measurement System of Reinforced Soil Wall in Cold and Snowy Environments [PDF] Akinobu Ogasawara, Shunzo Kawajiri, Teruo Fujiwara, Naoya Momohara, Masato Sakurai, and Koshiro Matsushita (Received March 2, 2021; Accepted June 17, 2021) Keywords: wireless power transfer (WPT), soil temperature, reinforced soil wall, cold and snowy environment
Reinforced soil walls, which are civil engineering structures, are subjected to catastrophic collapse when concrete panels fall off in cold and snowy environments. One of the methods to predict such collapse is soil temperature monitoring of the reinforced soil wall. However, in cold and snowy environments, health monitoring requires a lot of effort because the snow load breaks the wires connecting the data logger to the sensors, whereby the collected data fail to reach the logger. In this study, we developed a prototype wireless and battery-free soil temperature measurement system using wireless power transfer (WPT), and conducted field observation experiments for about nine months on a full-scale test reinforced soil wall and an in-service highway. The seasonal variation of the temperature data obtained from the WPT method was consistent with that of the temperature data obtained continuously by the traditional method.
Corresponding author: Shunzo KawajiriThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Akinobu Ogasawara, Shunzo Kawajiri, Teruo Fujiwara, Naoya Momohara, Masato Sakurai, and Koshiro Matsushita, Application of Wireless Power Transfer Technologies for Soil Temperature Measurement System of Reinforced Soil Wall in Cold and Snowy Environments, Sens. Mater., Vol. 33, No. 7, 2021, p. 2497-2509. |