MVB ring network with roundabout path redundancy

Abstract

The invention discloses an MVB ring network with a roundabout path redundancy, wherein the ring network supports an MVB main device in dynamic reconnection. The MVB ring network comprises a plurality of nodes, a first redundant loop line, and a second redundant loop line. The first redundant loop line and the second redundant loop line are connected in parallel and are connected in series with the multiple nodes successively. Each node consists of a multifunctional vehicle bus controller and terminal circuits; the multifunctional vehicle bus controllers are connected with the multiple terminal circuits electrically by the first redundant loop line and the second redundant loop line; and the first redundant loop line and the second redundant loop line are connected in series with the terminal circuits in each node successively. In each node, a crossed control circuit is formed between the first redundant loop line and the second redundant loop line. According to the invention the MVB ring network has the following beneficial effects: the MVB ring network can identify a breaking point position of an MVB bus line automatically; and usability of the MVB ring network and the MVB bus completeness can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of train communication, in particular to an MVB ring network with circuitous path redundancy. Background technique [0002] Multifunctional Vehicle Bus (MVB) is a serial data communication bus mainly used (but not exclusively) for interconnected devices requiring interoperability and interchangeability. The current train communication network based on the IEC61375 international standard usually uses MVB for vehicle-level communication control, and uses dual-line redundancy for system backup. [0003] However, since MVB is a bus-type network, disconnection at any point along the line will cause network interruption. In order to improve the fault recovery capability of the system, it is necessary to add an additional line switching mechanism to ensure that the line breakpoint can be automatically bypassed when one or more line faults occur, and the integrity of at least one line is guaranteed to maintain norm...

AI Technical Summary

Problems solved by technology

[0003] However, since MVB is a bus-type network, disconnection at any point along the line will cause network interruption

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