Research On The Existing Railway Cutting Slope Information Recognition Algorithm And Analysis System Based On Lidar Technology

With the development of intellectualization and informatization of railway,data acquisition and management of railway infrastructure information are becoming increasingly perfect.Railway cutting is one of the important infrastructures in railway operation,so it is the focus of current research to quickly obtain its basic information data and carry out efficient data management.At present,data acquisition methods are inefficient,and multi-source data entry is prone to errors affecting data quality,which can not meet the needs of intelligent and information development of railway.Therefore,it is of great significance to study the technology of railway cutting information acquisition algorithm and analysis system.In this thesis,by combining with the new data acquisition equipment,a more targeted cutting information acquisition algorithm is studied and a railway cutting information analysis system is developed.And according to the demand analysis to determine the acquisition of cutting information content,lidar scanner and other equipment comparison,completed the construction of information acquisition system;Combined with the characteristics of railway site environment,the railway cutting information acquisition and analysis scheme is determined.Combined with track structure and different cutting section forms,geometric characteristics of cutting top,slope foot distance from center line,number and height of slope platform were analyzed,and cutting information acquisition algorithm was studied.In addition,the noise point removal algorithm is studied under the influence of railway transportation equipment and slope vegetation.The railway cutting information acquisition and analysis system is developed with the railway cutting information acquisition algorithm as the core,C# as the system development language and Access as the database management system.The system realizes the rapid acquisition and analysis of cutting data,and its functions include the analysis and storage of various information of cutting section,the browsing of cutting section image,the query and output of cutting data.The system test and field measurement are completed by Shijiazhuang Tiedao University railway experimental base and Xinle-Jingxing special line.The error source is analyzed and the error control method is put forward.The comparison and analysis of the calculated values of the system with the traditional measurement results on site proves that the data acquisition results of the system are accurate and the accuracy meets the actual needs.