Research On MVB Class 4 Device Controller

Automatic coupling of railway vehicles has existed since the mechanical Jenny coupler at the turn of the 19th century. The railway industry's next challenge is automatic coupling of the vehicle's electronic equipments through a data bus. This requires a worldwide standardization of onboard data communication. The TCN was adopted as the international standard IEC-61375 in 1999.1.The IEEE Rail Transit Vehicle Interface Standards Committee Working Group 1 contributed to this work in the late phase and adopted TCN as IEEE Std. 1473-1999 Type T with no modifications the same year.The TCN architecture addresses all relevant configurations found in rail vehicles. It comprises the train bus connecting the vehicles and the vehicle bus connecting the equipment aboard a vehicle or group of vehicles. To simplify assembly, commissioning, and subsystem reuse, the TCN architecture specifies the Multifunction Vehicle Bus (MVB) as a vehicle bus. The MVB connects equipment within a vehicle or within different vehicles in closed train sets. Standard MVB interface controller is needed to connect various equipments to the vehicle bus.TCN has been studied, tested and applied widely abroad, especially in Europe. It is researched actively in China in recent years. Self-developed standard TCN devices with own intellectual property are of great importance and have great market potentials.There exist five classes of devices attached to the MVB, which differ in their capabilities. In this essay, design and realization of Class 4 MVB device controller are discussed. Related technologies such embedded system and fieldbus are also introduced in advance, then a general description of IEC61375-1 Train Communication Network is given, hardware system design and software system design are discussed in detail at last.