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Dual network system and switching method

A dual-network, dual-bus technology, applied in transmission systems, bus networks, digital transmission systems, etc., can solve problems such as system breakage and achieve the effect of improving operational reliability

Active Publication Date: 2018-10-16
CRRC DALIAN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] This application provides a dual-network system and a switching method, aiming to solve the technical problem in the prior art that some terminals are switched to the faulty line by using the overall switching bus strategy, which leads to the system being broken, and improves the reliability of the dual-network system

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] figure 1 It is a topology diagram of a dual network system provided by an embodiment of the present application. Such as figure 1 As shown, the dual-network system provided in this embodiment includes J dual-bus terminals 101, K first single-bus terminals 102, L second single-bus terminals 103, first bus 104, and second bus 105, wherein, J is an integer greater than or equal to 1. K and L are integers greater than or equal to 0.

[0043] Above-menti...

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Abstract

The application provides a dual network system and a switching method. The system comprises at least one dual-bus terminal, a first bus and a second bus, wherein the dual-bus terminal comprises a dual-bus memory; the dual-bus memory is respectively connected with the first bus and the second bus; the dual-bus memory comprises a first data partition and a second data partition, wherein a first datasub-partition in the first data partition is used for storing the first data received by the dual-bus terminal through the first bus; the second data sub-partition in the second data partition is used for storing the first data received by the dual-bus terminal through the second bus; the first data sub-partition only corresponds to the second data sub-partition; when the bus currently used by the dual-bus terminal is the first bus, and the communication state between the dual-bus terminal and the first bus is in a fault state, the dual-bus terminal switches the currently used bus to the second bus. When a fault occurs, only the failed dual-bus terminal is switched so as to improve the reliability of the dual network system.

Description

technical field [0001] The present application relates to the technical field of train control, in particular to a dual network system and a switching method. Background technique [0002] As the central nerve of data communication and logic control of high-speed trains, the network control system has extremely high requirements for real-time and reliability of data. [0003] In order to ensure the communication quality of the whole vehicle, the redundant switching algorithm of the existing vehicle adopts the switching strategy of the whole network. When the computer central control unit fails to communicate with the preferred network of some terminals, the maintenance personnel will evaluate the network status of all terminals in the vehicle to determine whether to switch the network. If the evaluator determines that the failure of the preferred network needs to be switched to the alternative network, the maintenance personnel will switch the communication network of each ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/40
CPCH04L12/40176H04L41/0663
Inventor 贾峰蔡志伟赵鑫陆璐卢舒宁李哲
Owner CRRC DALIAN CO LTD
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