The Application Research Of Semi-Physical Simulation Platform Based On CRH2Control Network

The requirement of train equipment localization is increasing continually along with the rapid development of high speed railway. Especially the train control network as one of the train key technologies is particularly important in the development of high-speed trains. At present, the control networks of the high-speed trains are mainly imported from abroad in China. Namely, the "nervous centralis" of the high-speed trains are still under control in several foreign major companies, therefore it is extremely urgent to research and develop the train control network with independent intellectual property rights. It is still in its infancy for the research of the train control network in our country and the gap from the practical application still exists. It is indispensable for the pure software and semi-physical simulation of the train control network system in order to provide reference to the real vehicle network control system and shorten its development time to avoid some detours.The central device site functional simulation of CRH2control network semi-physical simulation platform was designed and realized and accomplished the functional simulation of the terminal unit and displayer cooperation with the other members of the project group. The ARCNET fiber double loop network communications by hot standby redundancy system was achieved meanwhile. The semi-physical simulation platform of CRH2control network was set up and the application information interaction and processing among various function simulation sites of the optical fiber ring network were realized together with the other members of the project group based on "11th five-year plan" national science and technology support plan corpus "high-speed train network control system"(project number:2009BAG12A06,2009-2012)-network system semi-physical simulation.The main work of the thesis includes:(1) The design and implementation of the central device site functional simulation mainly include the network data sending and receiving, data parsing, the driver console simulation function, the central device internal logic operations, the central device simulation site hot standby redundancy, etc. And the partial data management of the terminal unit and displayer function simulation sites was achieved simultaneously. The network interfaces between the various functional simulation sites and the ARCNET fiber double loop network were designed and realized.(2) The networking communication of ARCNET fiber double loop network was implemented. Besides, the information real time transmission was realized in the double loop network by the hot standby redundancy mechanism.(3) The definition of various applications communication messages (air-condition, braking, traction, DIDO, faults, etc.) in the CRH2train control network was accomplished. And the application messages transmission and relevant processing among various function simulation sites were implemented in the ARCNET optical fiber ring network.Various application information interaction in CRH2train control network is implemented. And it has certain reference significance to the research of CRH2train control network system.