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MVB line redundancy switching method and system and vehicle

A redundant switch and line technology, applied in the field of rail transit, can solve the problems of frame data loss and failure to switch observation lines in time

Active Publication Date: 2021-02-02
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 and 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 invention relates to an MVB line redundancy switching method and system and a vehicle, and the method comprises the steps: connecting a trust line and an observation line to a first register and asecond register, so as to cache a frame of data received by the trust line and the observation line; when judging that the data received by the trust line is wrong, not sending the wrong data and performing steps of if judging that the data received by the observation line is not wrong, sending the data in the second register connected with the observation line and when sending of the data is completed, switching the observation line into a new trust line, and switching the trust line into a new observation line; and if judging that the data received by the observation line is wrong, directlyswitching the observation line to a new trust line, and switching the trust line to the 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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