Infrastructure monitoring system on expressway using optical axis control

With the aging of infrastructure, the need for efficient inspection methods has become increasingly important. The use of traveling inspection vehicles has made it possible to inspect structures more efficiently than before. However, increasing the speed of such vehicles to enhance efficiency introduces motion blur in imaging, leading to reduced spatial resolution and loss of accuracy. To address this issue, this research introduces high-speed tracking technology based on optical axis control using a galvanometer mirror, which enables image capture while moving at high speeds. Finally, we present examples of the application of this technology for detecting cracks, floating, and peeling in infrastructure inspections, drawing primarily on our recent research.