Research on railway limit measurement application based on railway survey robot

With the gradual improvement of China's infrastructure construction level, the importance of ensuring railway safety is increasing. The traditional railway limit measurement has the disadvantages of no data retention and difficult operation. How to obtain measurement data efficiently and accurately has become an urgent problem to be solved. This paper proposes to apply the three-dimensional mobile laser scanning technology to the limit measurement, and carry the technology on the railway measurement robot, and compare the measurement results with the traditional total station. It has been proved that the railway measurement robot has the advantages of high degree of automation, fast data acquisition speed, large amount of point cloud data, high accuracy and reliability, and rapid data processing. In the future, this technology can be promoted and applied in similar engineering measurement projects.