The Research And Implementation Of The Related Interfaces In Train Communication Network

With the development of the embedded technology and the intelligent devices, and the expansion of the railway, the information collation,the traffic control and the analysis of the communications network becomes an importment part of the high speed trains.This major study on the interface of the communications networks :the PCI interface, the LCD and the keyboard interfaces based on WindML.In the TCN gateway, the two modules transmit data by the PCI, so guarantee rapid and reliable transmission of data. Because of the complexity of the PCI standard, we choose the PLX company's special PCI interface chip PCI9056. Through testing achieve data transmission between the two modules based on the PCI.In the VxWorks system, LCD display and the keyboard interface base on WindML library to implete the drivers. LCD can display the graphic and Chinese character, and show the user's information clearly and intuitively. According to the requirements of user's instructions, the lower drivers read the key value and the higher drivers encapsulate and deal with the package. The design of the keyboard solves the practical problems.