Design And Implementation Of Railway Intelligent Display Guidance System

The railway display guidance system is mainly composed of data server,LED controller,LED display screen,scheduling program and other soft and hardware equipment.These equipment can transmit and display the traffic information in time,and have the ability of intelligent analysis to realize the directional transmission of information.In the early stage,limited to computer and transmission technology,the main use of RS-232 or RS-485 serial interface to carry out information transmission,in this interface mode,the transmission of data is less,the deployment method can only use the C/S(Client/Server)architecture,the C/S architecture has a better advantage.This mode makes full use of the client.And the software and hardware environment of each end device of the server can give full play to the performance of the two ends,and the execution tasks are also separated.They each undertake certain tasks and greatly reduce the pressure at one end.The advantages of this deployment method also contribute to the deployment of most of the guiding systems.But with the development of technology,the malpractice of serial communication technology under C/S mode is becoming more and more obvious.On the one hand,the transmission distance of serial communication is limited,and there is only one serial port on a computer(the serial port has basically been eliminated in the current computer).In the actual production environment,the guiding information is usually transmitted concurrently.To multiple displays,now to meet the multichannel high concurrency,the serial port can only be multiplexed.The problem is that once a fault occurs,all communications will be interrupted in this chain,and the direction of the line can not work,and the troubleshooting is also difficult.With the development of network technology,LED controller based on network interface transmission has been developed,and each LED controller corresponds to the unique IP address.The network transmission mode has the advantages of large data transmission,long distance,flexible deployment,and convenient control based on IP address mode,and easy to troubleshoot.The network transmission mode also brings the change of the system deployment mode,which provides the technical basis for the guidance system using the Browser/Server(B/S structure).Using the star network topology layout,the guiding failure rate has also been greatly reduced,and there is very little one line fault caused the whole line can not be used.On the premise of current technical support,this paper studies the construction of intelligent guidance system,focuses on the research of the technology architecture,the intelligent operation scheduling and the realization of key functions.The research includes the B/S architecture,the Java EE technology architecture,the JFinal open source framework and the intelligent scheduling open source operation framework Quartz.The functions of train dispatching management,train management,LED equipment,LED configuration,dictionary management and log management are realized.With the deployment of B/S structure,the upgrading and maintenance are simpler than the C/S deployment,the cost of the system design is low,the communication line fault is easy to be checked,and it has better scalability and security.This can not only meet the needs of the railway display management,but also bring the better management experience to the users.