Train network control system and fusion method based on fusion of software and hardware

Abstract

The present invention relates to a train network control system and a fusion method based on software and hardware fusion, the system includes a CPU board, an MVB main card, a WTB board, and a bus backplane; the CPU board is the main control board, through the The bus backplane is connected with the MVB main card and the WTB board at the same time, and the MVB process and the WTB process are running at the same time, and the MVB process and the WTB process carry out data interaction through the shared memory; the MVB main card is used for the MVB bus Network management and MVB data communication functions; the WTB board is used for network management and WTB data communication functions of the WTB bus. The train network control system of the present invention integrates the central control unit and the gateway, the MVB process and the WTB process share the CPU, simplifies the network system structure, reduces the communication nodes between devices, and has stronger real-time performance. At the same time, the MVB process and the WTB process exchange information through the shared memory, which greatly reduces the data transmission time and has stronger real-time performance.

Description

technical field [0001] The invention belongs to the technical field of TCN train communication network, and in particular relates to a train network control system and a fusion method based on fusion of software and hardware. Background technique [0002] The train communication network TCN defines a two-level hierarchical structure, corresponding to the twisted train bus WTB and the multifunctional vehicle bus MVB. Among them, the central control unit and the gateway are two independent core system components in the existing train control network. The central control unit is mainly responsible for the functions of MVB bus management, logic control, monitoring and fault diagnosis of the train network control system. The central control unit Communicate with the traction unit subsystem through the vehicle bus to realize the control and diagnosis of the MVB vehicle subsystem. The gateway adopts two types of buses, MVB and WTB, to realize cross-marshalling transmission of trai...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing train network control system, the central control unit and the gateway are two independent devices, resulting in complex design structure, many communication nodes between devices, and the hidden danger of increased communication failure rate

At the same time, in the existing train network control system, the central control unit and the gateway exchange key vehicle control information and status information through the MVB bus. The minimum polling cycle of the MVB bus is 32ms, and the maximum cycle is 1024ms. The maximum transmission size of each MVB port It is 32 bytes, there is a certain bus transmission delay and data packet transmission size limitations, the real-time communication is low, and the amount of one-time data exchange information is small

[0004] Therefore, the present invention considers improving the existing train network control system and integrating two mutually independent central control units and gateways to solve the problems of complex design structure and poor real-time performance of the existing central control unit and gateway equipment

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