Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2023 - September 06, 2023
Jet fans are installed in tunnels on the Metropolitan Expressway to ensure the air quality in tunnels and to provide an evacuation environment in case of fire. The jet fans are suspended above the roadway in the tunnels, and lane restrictions are required for many days for inspection. This experiment was started with the purpose of developing a new inspection method and reducing lane restrictions. In this experiment, the motion was analyzed using an acceleration sensor for the purpose of grasping the abnormality detection of the jet fan motion. From the analysis results, it was possible to obtain data that could be used to two types of abnormality detection: a method based on frequency analysis and a method based on trajectory analysis.
