Hardware Design And Implementation Of Train LED Controller Based On MVB Communication

In the recent two decades, China’s economy has been maintaining a high growth rate, following is that more and more cities are building rail transit systems in order to facilitate citizens for travel and to establish the mutual trade with neighboring cities. At the same time, People also put forward higher requirements on the quality of travel, urban rail transit with high quality of service and operational level will become the people’s first choice for trip. Therefore, the Urban rail transit operators will pay more attention to the standard of passenger service, especially the service of supplying train information. Given the above situation, the concept of passenger information system is emerged. It refers to the system which can convey various travel-related information to the passengers at a particular time. As the major carriers of the passengers information display system, LED panels could supply the daily and travel information to the passengers, especially in the emergency situations they play an important role and could direct passengers to evacuate.By the research on the needs of the vehicle LED controller, the scheme of designing the LED controller based on the spartan-6 series FPGA and MVB has been proposed. In addition, the FPGA will connect an external DDR2 memory, when the circuit board works, microblaze soft-core program, application program, fonts, site and switch information’s datum will run in the memory. The proposed scheme is verified by the selection of the chips, the design of the hardware circuit and PCB, and functional test of the cards, the plan is verified.This thesis firstly introduces the passenger information system development and basic knowledge of LED. Then according to actual needs of customers, the designing plan based on FPGA and MVB Communication bus is selected. Next, the hardware design platform and developing procedure, schematic design and PCB design are described in detail. Schematic design includes system power circuit, memory circuit, MVB interface and 4 bit serial Flash circuit. PCB design includes PCB layer structure design, the layout of PCB and post-treatment. Finally, the LED controller is debugged and tested. The conclusion and the future work are discussed in the end of the thesis.