Dual-network-based rail transit train-ground communication detection platform

Abstract

The invention provides a dual-network-based rail transit train-ground communication detection platform comprising a to-be-detected communication based train control (CBTC) system, a trackside PC, n vehicle-mounted PCs, and a switch. The n is the number of to-be-detected zone trains. The trackside PC and the vehicle-mounted PCs are configured with dual-network cards; and one network card is connected to the to-be-detected CBTC system by a cable to form a train-ground communication network to transmit train-ground communication data and the other network card is connected to the switch by a cable to form a time synchronization network to realize time synchronization of the vehicle-mounted PCs and the trackside PC. With the platform, a CBTC system train-ground communication situation can be simulated indoors; and the communication performance of the CBTC system can be tested. A testing data statistic management system of the trackside PC can gather testing results of all vehicle-mounted PCs to the local unit; and an intelligent testing data retrieval system can carry out retrieving rapidly to obtain loss data packet information. Therefore, the CBTC system testing work efficiency can be improved; and a reference can be provided for testing researches and development of the CBTC system.

Description

technical field [0001] This patent relates to the field of rail transit technology, in particular to a dual-network-based rail transit vehicle-ground communication detection platform. Background technique [0002] Communication Based Train Control (CBTC, Communication Based Train Control) has become the dominant train control system in the field of urban rail transit due to its safety, efficiency and easy maintenance. CBTC includes multiple subsystems, among which the vehicle-ground communication subsystem is the core of the CBTC system. It is particularly important to test and verify the reliability, security and real-time performance of the vehicle-ground communication subsystem. [0003] At present, for the indoor simulation test of the CBTC vehicle-ground communication subsystem, network test platforms such as PC or IXIA equipped with network layer test software are widely used, but there is no test platform dedicated to testing the CBTC vehicle-ground communication netw...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the high cost and time overhead of CBTC vehicle-ground communication field test, and the existing indoor simulation test method cannot measure the one-way delay of vehicle-ground communication due to the asynchronous time of the vehicle-ground, the present invention provides a dual-network-based rail transit The vehicle-to-ground communication detection platform is suitable for the indoor simulation test of the CBTC vehicle-to-ground communication subsystem. At the same time, a dual-network mechanism is introduced. The A network transmits the CBTC vehicle-to-ground communication data through the CBTC system to be tested, and the B network realizes each vehicle-mounted PC through the switch. The time synchronization of the trackside PC, so as to obtain the one-way delay of the train-ground communication data

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