The Design Of Driving Unit Of Train Cab Based On TCN

The driving unit of the train cab is used for the driver to exchange information with the vehicle equipments. It is an important component in the train control system. With the rapid development of modern train, the information and data that should be processed in the driving unit of the cab are increasingly more. Therefore, an effective data processing system unit and a man-machine interface which can display a variety of information and was friendly to the users play an increasingly significant part in the train control system. It can not only send the control commands emitted by the cab to train equipments accurately and in real time, but also receive the running status information and fault information of the train equipments in real time for the driver and trainman, so it is the protection of train running safely at a rather high speed.Firstly, beginning with the application situation and developing trend of train network control technology, the background and significance of the research and design of train driving unit is described. The composition of the Train Communication Network (TCN standard) is described. The communication theory of the Multiple Vehicie Bus and Wired Train Bus which constitute the train communication network is introduced. Secondly, the design and implementation of the driving unit of the cab is described from the software part. By learning and using Observer design pattern and Factory design pattern, the scalability of the software of the system is enhanced and the redundancy of the software is reduced. The software system of the driving unit is designed based on Qt-creator. The data communication of the system is implemented, and the functions of processing the data from the bus and diagnosing the fault that happened in the train equipments are also implemented. Finally, the TCN network configuration tool for configuring the entire train network is designed and implemented, and a small control network test platform is configured by the configuration tool to test accuracy of the driving unit of the train cab.By the experiments of the small network test platform, it is revealed that the driving unit of the cab can communicate with the train control subsystem normally and accurately, man-machine interface of the cab can correctly display the device status information of the train, and the entire driving unit is stable, reliability and real-time.