Design And Implementation Of Railway Accident Investigation Assistant System

The accident investigation is to find out the cause of the accident,clarify the responsibility,learn the lesson,and avoid repeated accidents.The rapid development of railways and the rapid development of scientific and technological information have placed higher demands on the automation and intelligence of railway accident investigations.China's railway accident investigation has room for improvement in accident data management and statistical analysis,and accident investigation process control.This paper applies computer technology,network technology and database technology to develop the railway accident investigation auxiliary system.It is of practical significance to investigate the auxiliary support accident,further standardize the accident investigation process and improve the work efficiency of the accident investigation personnel.The main work of the thesis is as follows:(1)The research status of railway accident investigation methods and accident investigation support systems at home and abroad were analyzed.The shortcomings of accident investigation in China were summarized.The necessity of research and development of railway accident auxiliary investigation system were clarified.Relevant technologies for system development and related knowledge of railway accidents were introduced.(2)According to the problems existing in the railway accident investigation,the functional requirements such as system management requirements,information management requirements of accident investigation process,accident assistance identification requirements,and accident information management requirements were analyzed.The non-functional requirements of the system were analyzed for the user experience.The functional modules and performance indicators of the system were finally determined.(3)The overall architecture of the system for the functional requirements of the system was designed.Based on the overall architecture of the system,the functional modules and class diagrams of the system were designed in detail,and the E-R model and data table of the railway accident investigation support system were designed.(4)Based on the system design,various functional modules were realized by using programming languages such as Java and JSP.The system was functionally tested through test cases,and the system was tested for performance using dedicated software.The test results showed that the system could meet the functional requirements.