The design of rail straightness detector based on the laser displacement sensor

The straightness of the rail track not only affects the running speed and comfort of the train, but also leads to violent noise and damage to the accelerated train, and even endangers the traffic safety. Therefore, the detection of the rail straightness is crucial to the maintenance of the track. This paper designed a rail straightness detector based on laser displacement sensor. According to the detection requirements of rail straightness, through the design of the detector structure and hardware and software, the manufacturing of the mechanical structure of the experimental prototype and the debugging of the software system were completed. And the detection accuracy of the detector was tested experimentally. The results show that the rail straightness detector has the characteristics of reliable detection performance and many detection points, which provides technical support for the rail straightness detection.