Communication quality evaluation method and device for multifunctional vehicle bus network

Abstract

The invention provides a communication quality evaluation method and device for a multifunctional vehicle bus network. The cThe method comprises the following steps: obtaining communication quality ofan MVB network is obtained by analyzing at least one complete physical waveform of signals of an MVB communication message and a transmission message;. aAnalyzing each index of the MVB communicationmessage in the bus message dimension to obtain a bus communication quality score value; and for a communication port in the MVB network, respectively analyzing indexes of a port message error code dimension, a port message interval dimension and a physical waveform dimension to obtain a port communication quality score value. And; finally, obtaining a communication quality score value of the MVB network according to the bus communication quality score value and the port communication quality score value. According to the schemesolution, the communication quality of the whole MVB network is obtained by statistically analyzing the communication quality of the bus and the port in each dimension, so that the communication quality of the whole vehicle can be accurately evaluated during daily maintenance, potential communication faults can be detected in time, and the communication stability and the operation safety of the train are improved.

Description

technical field [0001] The invention belongs to the field of train communication protection, in particular to a communication quality evaluation method and device for a multifunctional vehicle bus network. Background technique [0002] The multifunction vehicle bus (MVB) is a part of the train communication network. The MVB bus transmits control commands and feeds back status information of each device, so as to realize vehicle control. [0003] Abnormal MVB bus communication will lead to a decrease in the carrying capacity of the train, and even lead to unpredictable safety hazards. Therefore, how to correctly evaluate the MVB communication instructions in the daily maintenance of the train and give timely warnings before the MVB bus communication failure of the train is an urgent need in this field. A problem solved. Contents of the invention [0004] In view of this, the purpose of this application is to provide a method and device for evaluating the communication qual...

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Problems solved by technology

[0003] Abnormal MVB bus communication will lead to a decrease in the carrying capacity of the train, and even lead to unpredictable safety hazards. Therefore, how to correctly evaluate the MVB communication instructions in the daily maintenance of the train and give timely warnings before the MVB bus communication failure of the train is an urgent need in this field. a problem solved

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