Railway transportation is one of the most important modes of transportation in China, and it has been developing continuously in recent years, with bullet trains, high-speed trains, intercity trains, and train speeds getting faster and faster. However, with greater speed comes greater danger, and accidents abound. Although the state requires the limit of speed, but the limit of speed can not solve the fundamental problem, how to ensure driving safety, to create a stable and efficient driving environment is the most urgent need at present.

The train is a special means of transport running on the railway track. Its use environment is complex and changeable, and it is often affected by various factors such as wind, snow, earthquake, debris flow, landslide, tunnel foreign matter, geological mutation, etc. It is easy to cause deformation of the railway track and be covered by foreign matter, which seriously threatens the safety of the train. AXISENSE-2 USB-90 not only accurately measures the inclination and deformation of the track, but also monitors the inclination changes of the surrounding environment of the track in real time, especially in some places where there are few people, and makes preventive alarms in advance to avoid major accidents.