Train multi-professional-Ethernet comprehensive bearing method and device based on TSN

Abstract

The embodiment of the invention discloses a train multi-professional-Ethernet comprehensive bearing method and device based on a TSN. The method comprises the steps: building a train communication control network based on the TSN; setting the TSN transmission rate of the train communication control network according to the train communication bandwidth requirement; determining service data havinga requirement for transmission delay in train communication, and configuring a frame preemption mark of the TSN for the service data in the transmission process of the service data; and performing train communication control based on the TSN transmission rate and a frame preemption mark carried on the service data. According to the embodiment of the invention, the train communication control network is established based on the TSN, so the high bandwidth, low delay and unique frame preemption technology of the TSN can be fully utilized to provide support for priority transmission of train key data information, and the performance of the train communication control network can be improved.

Description

technical field [0001] The invention relates to the technical field of train control, in particular to a TSN-based multi-specialty Ethernet comprehensive bearing method and device for trains. Background technique [0002] Today's train communication network mainly adopts two technologies of Lonworks, WTB and MVB. The existing train communication network in my country is mainly composed of train bus WTB and train bus MVB. Including train control, fault diagnosis data communication network, etc., it effectively connects various parts and levels of the control system organically, so as to achieve information exchange and data sharing, and realize the intelligence, networking and informatization of the train control system. MVB is a serial data communication bus used between interconnected devices that require high interoperability and interchangeability. WTB can transmit process data periodically, and its transmission period is an integer multiple of the basic period (25ms), a...

AI Technical Summary

Problems solved by technology

Although Lonworks, WTB, and MVB technologies have their own advantages, with the intelligent development of train systems, these technologies have also exposed their own shortcomings.

Lonworks has relatively loose requirements on transmission media and topological forms, and can be used as both a train bus and a train bus. However, its biggest defect is that the transmission rate is relatively low. When the train communication network transmits a large amount of data, It is difficult to meet site requirements; during train operation, the amount of train-level communication data is usually larger than that of train-level communication data, while the transmission rate of WTB is lower than that of MVB, and the contradiction between communication volume and communication rate needs to be resolved

Images