Research On The Train-Ground Simulation System Of The Simulation Test Platform For LKJ-15 Train Operation Monitoring System

The train operation monitoring system(LKJ)is part of the train control system of China railway architecture,which is an important driving control device used to prevent train from overrunning signals and running overspeed,and assist drivers to operate.In the development process of on-board equipment for the new generation of LKJ(LKJ-15)train operation monitoring system,it is necessary to realize the train-ground simulation environment to simulate the interactive procedure between locomotive equipment and ground system,and use it to debug and test the function of the on-board main control unit.Due to the inability to use the real locomotive driving platform and ground equipment in the research and development process of the LKJ-15 system,and in order to improve the research progress and reduce costs,the train-ground simulation system of LKJ-15 train operation monitoring system simulation test platform that can simulate the function of the locomotive driving platform and ground equipment was designed and developed without affecting the research and development of the system function.First of all,according to the technical specifications of the LKJ-15 train operation monitoring system,the functional requirements of the train-ground simulation system and the data interaction between the on-board equipment,driving cab and ground equipment are analyzed.Secondly,the calculation model of train speed is designed based on the principle of train dynamics and the train motion model.Then,according to the functional requirements and data interaction requirements,we design the overall architecture,system interface and man-machine interactive interface of the train-ground simulation system,and definite the function and work scheduling of each module.At the same time,based on the Microsoft Foundation Classes(MFC)of the Visual Studio 2008 development environment,we drawn the interactive interface,and realize the simulation function of train operation,driving cab,track circuit,transponder,frequency signal input and shunting signal input.Finally,based on the Jingha line data from Shijiapu to Dayushu and the Hening line from Quanjiao to Chaobei,we compile the data script of the track circuit and transponder,and input to the train-ground simulation system,and realize the simulation and testing of the stand-alone main controlling application software and Driver-Machine Interface(DMI)application software of the LKJ-15 train operation monitoring system in the train-ground simulation environment to verify the feasibility of the simulation system.