Design Of Monitoring System For Urban Rail Transit Dynamic Simulation

The rapid development of the social economy has caused a significant increase in the urban population,and the problems of urban public transportation have gradually become prominent.The characteristics of energy saving,safety,and large traffic volume of urban rail transit have gradually become a mode of transportation vigorously constructed and developed by large and medium scale cities.The establishment of a systematic rail transit traction power supply simulation platform has a great effect on the safety and the development of new technologies of urban rail transit.The subject of this paper comes from "Dynamic Simulation Platform for Traction Power Supply of Urban Rail Transit",referred to as "Dynamic Simulation Platform".It built a small proportion of the real rail transit traction power supply system to simulate various operating conditions and fault status and energy flow of each traction substations during actual subway operation.The monitoring system of dynamic simulation is designed according to the needs of the entire platform for monitoring.It mainly completes two functions.First,it designs communication networking,so that the upper-layer instructions and multiple bottom-layer data can communicate in both directions.The second is to design the host computer software.The software serves as a visual monitoring window to present the operating status of the bottom layer and send real-time instructions to the bottom layer.This paper first describes the structure of the underlying system of the traction power supply simulation platform for urban rail transit.According to the characteristics of the underlying control board DSP28377 and CPLD and the requirements of the platform,HLK-RM08 K was selected as the communication chip.According to the characteristics of the construction site environment of the experimental platform,a specific networking plan was formulated.The communication information between the upper system and the lower layer is determined,and a communication protocol is formulated.The above three constitute the communication part of the monitoring system.Secondly,according to the known line conditions,train information and comprehensive optimization control principles,the traction calculation of the train operation is carried out according to the principle of traction calculation,and the speed,power,traction force and other information per meter when the train is running are obtained,which is displayed in the form of a line chart result.At the same time,save the traction calculation results to the Access database as a type of data information for theplatform.The Winform application program is written in the C # language of the.Net platform.The application program uses C/S network communication mode,it can intuitively display the bottom structure of the dynamic simulation platform,and control the bottom layer,it realize the human-computer interaction mode.53 pictures,5 tables,61 references.