A method and system for realizing MVB configuration and communication based on backplane

Abstract

The invention discloses a method and system for realizing MVB configuration and communication based on a backplane. The method comprises the following steps: (1), a backplane used for exchanging data is configured between an MVB configuration and using part and an MVB protocol implementation part in advance; and furthermore, multiple channels are divided in different areas on the backplane, so that different types of data can be transmitted; and (2), when MVB configuration needs to be executed, the MVB configuration and using part sends configuration data to the MVB protocol implementation part through an appointed channel in the backplane; and, when MVB communication needs to be executed, communication data is transmitted between the MVB configuration and using part and the MVB protocol implementation part through an appointed channel in the backplane. The system comprises the MVB configuration and using part and the MVB protocol implementation part; data is exchanged through the backplane; and the multiple channels are divided in the different areas on the backplane. The method and the system disclosed by the invention have the advantages of being simple in implementation method, flexible to control, high in MVB configuration and communication efficiency, real-time performance and reliability, expandable and the like.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a method and system for realizing MVB (Multifunction Vehicle Bus, twisted train bus) configuration and communication based on a backplane. Background technique [0002] With the improvement of the modularization, informatization and intelligence level of the train network system, MVB, as a sub-component of communication, is gradually becoming smaller and more intelligent. Among the MVB components, the MVB protocol implementation component (MVB communication component) is a component that includes an MVBC (Multifunction Vehicle Bus Controller) chip and has the function of MVB communication; the MVB configuration and use component (MVB application component) Components for programs that use MVB communication results. In order to further realize the chassis, miniaturization and intelligence of the train network, the realization of MVB communication is usually separated from re...

AI Technical Summary

Problems solved by technology

In theory, MVB can be configured with 4095 ports, but this type of MVB configuration and communication requires that these ports must be operated within a specified time, and MVB status needs to be queried, so the backplane communication load is very high, requiring the backplane Need to have a higher communication rate;

[0006] (2) The design and implementation of hardware and software have high requirements

The high-load backplane operation will further bring difficulties to the realization of other functions. For example, the reception of MVB protocol implementation components is usually realized by interrupts. At this time, it is also necessary to process the communication from the control board. Therefore, MVB protocol implementation components must be required. The processing power is good enough to meet the processing needs

[0007] (3) Poor stability and reliability

This type of MVB configuration and communication method uses a single backplane command communication. MVB configuration, communication, status, etc. are all realized by commands. If there is an error in the transmitted command, it will affect the entire MVB protocol implementation components, MVB configuration and use components. normal communication between

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