| The slope of the railway is being enlarged to exploit the deeper mine. The traction of the mine locomotive must be strengthened, with which to climb the slope. The double-unit or several-unit traction is the useful way to reach the goal. The paper studies and designs the train communication networks of the double-unit traction for the mine locomotive.The paper first analyzes the electrical devices in the ShaoFeng and ShaoShan locomotives, then the train communication network settings and its data stream, last analyzes the characteristics of physical layer and transfer layer of the train communication network. It was the basic theory of the design about CAN and MVB in double-unit traction for mine locomotive.Investigations on the actuality of the railway traffic, the paper present the particular double-unit traction system in the old locomotive to strengthen the ability to climb the slope. The paper particularizes the design. In the double-unit traction system, the train bus of communication networks is realized by using MVB, which is the standard of TCN. The vehicle bus is realized with CAN bus, which possesses strong real-time performance, it achieves the nodes communication of the motorman's dictate, the state of the motor, the central control unit and the display of the data. The central control unit used as gateway receives all the data of the train, and processes the data, get the controlling strategy to control the tractors. The MVB I species equipment communication is designed in FPGA, the hardware of the CAN communication is designed with the C8051F040 which has a CAN controller in the system, the application layer specification of CAN bus is defined on the data stream of the train. All the data of the nodes are watched and saved in the MCGS.The double-unit traction has been tested with heavy load. The. The behavior of the two locomotives is the same. The climbing ability of the tractor is successful enhanced, and the system has been proved to be popularized. |
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