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MVB line redundancy switching method and system, vehicle

A redundant switching and line technology, applied in the field of rail transit, can solve the problems of frame data loss, unable to switch observation lines in time, etc., to achieve the effect of improving reliability, fast, safe and reliable line switching, and avoiding data loss

Active Publication Date: 2021-12-03
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Abstract
  • Description
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Problems solved by technology

However, the existing MVB line redundancy switching method may not be able to switch to the observation line in time due to the uncertainty of the time lag between the A line and the B line when the line is cut, resulting in the loss of frame data

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  • MVB line redundancy switching method and system, vehicle
  • MVB line redundancy switching method and system, vehicle

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Embodiment Construction

[0042] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0043] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0044] In order to solve the technical problem of t...

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Abstract

The present invention relates to a MVB line redundancy switching method and system, and a vehicle. The method includes: connecting a trust line and an observation line to a first register and a second register respectively, so as to respectively cache the received data of the trust line and the observation line One frame of data; and when it is judged that the data received by the trust line is wrong, the wrong data is not sent, and the following operations are performed: if it is judged that the data received by the observation line is not wrong, then send the same The data in the second register connected to the observation line, and when the transmission is completed, switch the observation line to a new trust line, and switch the trust line to a new observation line; and if it is determined that the If the data received by the observation line is wrong, the observation line is directly switched to a new trust line, and the trust line is switched to a new observation line.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to an FPGA-based MVB line redundancy switching method and system, and a vehicle. Background technique [0002] The redundancy scheme of the Multifunction Vehicle Bus (MVB for short) network is usually composed of two lines, A line and B line, one of which is a trust line, and the other line is an observation line. The two lines receive data from the MVB network at the same time. When there is a problem with the trust line, such as when the frame data cannot be received or the received frame data is wrong, the trust line and the observation line are switched. However, the existing MVB line redundancy switching method may not be able to switch to the observation line in time due to the uncertainty of the time lag between the A line and the B line when the line is cut, resulting in the loss of frame data. [0003] Therefore, there is an urgent need for a fast, safe and reliable M...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40
CPCH04L12/40176H04L2012/40273
Inventor 申超群全清华唐军蒋国涛周学勋张泰然陆琦任懋华
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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