Structure Gauge Measuring Equipment using Laser Range Scanners

Periodic measurement of the structure gauge is of extreme importance to ensure the safety of train operations. This measurement is labor intensive and time consuming because there is a considerable number of wayside facilities. Therefore, we have developed an inexpensive and efficient measuring equipment using laser range scanners. In addition, we have developed a management system that maps the measured three-dimensional point cloud data to the facilities data. This paper describes these problems, provides solutions for applying laser range scanners to structure gauging, and discusses the experimental results.