A Ring Communication Network for Urban Rail Trains

Abstract

The invention discloses an annular communication network of an urban rail train. The annular communication network comprises two or more than two annular local area networks which are independently communicated with each other; each annular local area network is formed by exchangers through communication connection, wherein the exchangers are arranged in compartments of the urban rail train respectively; the annular networks are separated into the local area networks which are independently communicated with each other through the configuration on ports of the exchangers so as to transmit different types of data. According to the annular communication network of the urban rail train, train operation state data, train diagnostic data and train operation control instructions can be transmitted, the safety, the real-time performance and the reliability of the network communication in a train are enhanced, and accordingly the development of the subsequent extension application such as the remote update of equipment applications, the train informatization and intellectualization and the multimedia data transmission in the train can be possible.

Description

technical field [0001] The invention relates to the technical field of rail transit communication, in particular to a ring communication network inside an urban rail train. Background technique [0002] Urban rail transit (urban rail) has become the first choice for most cities to relieve traffic pressure due to its large capacity and fast speed. During the operation of urban rail trains, in order to monitor the running status of the train, realize the fault diagnosis of the train, and achieve the automatic control of the train operation, the related monitoring and control equipment in the train will generate a large number of commands related to the running status of the train, train fault diagnosis, and train operation control. related data. The generation and consumption of these data are often located in different on-board equipment, so it is necessary to build a communication network inside the train to transmit these data from its production equipment to its consumpti...

AI Technical Summary

Problems solved by technology

This reduces the real-time performance of the data to a certain extent

[0008] 4. In the bus-type TCN topology based on MVB communication technology, the communication mode is half-duplex communication, and the communication performance is not high

This undoubtedly increases the manufacturing cost of urban rail trains

[0009] 5. In the bus-type TCN topology based on MVB communication technology, due to the limited data transmission capacity, all communication equipment cannot be updated and maintained remotely, requiring staff to operate on-site

This is time consuming and laborious

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