An mvb master device supporting dynamic reconnection of mvb bus

Abstract

The invention discloses MVB master equipment for supporting dynamic reconnection of a MVB bus. One MVB master equipment is correspondingly arranged in each MVB network segment of the MVB bus of a train; the MVB master equipment comprises a master equipment body and a plurality of MVB slave equipment positioned in the same MVB network segment of the master equipment; furthermore, the master equipment body and the plurality of MVB slave equipment are in communication connection; and furthermore, each the master equipment body comprises a relay for disconnecting physical connection in the two reconnection directions. The MVB master equipment disclosed by the invention has the benefits that: the MVB master equipment can detect reconnection / disconnection actions of adjacent two segments of MVB buses, and automatically trigger re-distribution of related node addresses and port addresses of various MVB equipment in respective buses after communication handshake; and thus, the dynamic reconnection function of the MVB bus is realized.

Description

technical field [0001] The invention relates to the technical field of train communication, in particular to an MVB master device supporting dynamic reconnection of an MVB bus. Background technique [0002] The current train communication network based on the IEC61375 international standard usually uses a fixed-configuration MVB bus to achieve vehicle-level communication control. Due to the effective networking span of more than 200m, the MVB bus using the transformer coupling access mode (EMD) is also often used as a cross-vehicle short marshalling network communication carrier. [0003] The traditional MVB technology uses a fixed network configuration, so it is necessary to introduce a train-level network with dynamic grouping functions, such as the WTB bus, when performing network expansion or reconnection; or manually reassign the addresses of all devices in the MVB bus. These strategies all have cost or efficiency deficiencies, and when the WTB bus is introduced, it wi...

AI Technical Summary

Problems solved by technology

These strategies all have insufficient cost or efficiency, and when the WTB bus is introduced, it will bring additional communication delay, which is not conducive to the improvement of real-time system monitoring

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