Design And Implementation Of Remote Monitoring Communication System On Track Maintenance Machinery

With the rapid development of high-speed railway,ordinary railway and intercity railway,higher requirements have been put forward for the new repair,overhaul,maintenance and rail testing of track lines.As a highly efficient way to realize the construction and maintenance of track lines,track maintenance machinery is getting more and more attention.Once a track maintenance machinery fails in the field construction operation,the technician can't solve it in time,which will affect the normal operation of the train.Track maintenance machinery products distribution in each country along the railway,but the enterprise informatization construction is relatively backward.Therefore,the implementation of a remote monitoring and multi-type of track maintenance machinery system will help the customers to better manage the track maintenance machinery,and improve the efficiency and quality of the product.This thesis designs and implements an on-line remote real-time monitoring system for track maintenance machinery.The system is mainly divided into three parts: monitoring management center,data communication subsystem and vehicle terminal.During the period of one and a half years of universities and enterprises joint cultivation company,the writer has been involved in the work of remote monitoring projects.It analyzes the requirement of remote monitoring of track maintenance machinery,analyze and design the overall framework of the system,and the function modules of the monitoring management center,such as user management,electronic map,real-time monitoring,data replay,operation and maintenance management,etc.Research and use of WebGIS and Anychart and other related technologies to implement the visual monitoring of track maintenance machinery,it mainly take response for real-time detailed monitoring of vehicles such as tamping and stabilizing vehicles,inspection cars,grinding cars,sieving car,etc.And designs an intermediate communication subsystem,on the one hand,it receives the vehicle information from the vehicle terminal,on the other hand,it receives the request information from the monitoring center.The communication subsystem adopts the "UDP+TCP" communication strategy,designs the corresponding custom communication protocol,and implements the communication server based on the IOCP model,and analyses the development of the service and the performance of the communication server.At last,the load balancing technology of LVS is studied deeply,and a scheduling optimization scheme based on load balancer feedback is put forward based on the application of this idea to projects.The load balancer is designed by using the Least-Connections algorithm,and it implements the optimization from single communication server to multiple communication servers.In conclusion,this Thesis optimizes the communication subsystem by adding a load balancer,improves the maximum load of the whole communication subsystem.At the same time,implements remote real-time monitoring of multi-type track maintenance machinery by browser.According to the running environment of the project,the function of the remote monitoring system work normal and stable.The communication performance after the optimization satisfy the development requirement of the enterprise at the present stage.