Automatic test device and method for initial running time of train backbone network switch

Abstract

The invention discloses an automatic test device for the initial running time of a train backbone network switch, comprising a power supply unit, an Ethernet analysis unit, a control unit and a switch unit, the power supply unit is connected to at least one switch through the switch unit, and the Ethernet analysis unit is respectively It is connected with each switch; the control unit is respectively connected with the Ethernet analysis unit and the switch unit. The invention also discloses a test method, including: S01, providing power to each switch in the backbone network; S02, the control unit controls the rate of the data flow sent by the Ethernet analysis unit, and sends the data flow to the switch through the sending end; S03, The action of the switch unit triggers the initial operation of the switch connected to the Ethernet analysis unit; S04, counting the Ethernet data packets lost at the receiving end of the Ethernet analysis unit; S05, obtaining the initial operation time through the rate of the Ethernet data packets and data streams. Both the device and the method of the invention have the advantages of high degree of automation, high reliability and the like.

Description

Automatic testing device and method for initial running time of train backbone network switches technical field The present invention mainly relates to the technical field of train network testing, and particularly refers to the initial running time of a train backbone network switch The automatic testing device and method. Background technique With the rapid development of Ethernet technology, the application of Ethernet technology to train communication network has become a research topic in recent years. the key of. The IEC 61375‑2‑5 international standard stipulates that the train bus adopts the Ethernet train backbone network. Backbone, ETB). The ETB network adopts a two-layer network topology, in which the ETB is the backbone network, and the vehicle equipment is structured through the bus bus. Each network is formed, and inter-group communication is carried out through the nodes on the backbone network. The initial operation of the train backbone network s...

AI Technical Summary

Problems solved by technology

The initial running time is: T2-T1, the disadvantage of this method is:

Considering a situation: the record of the initial operation has been completed in the record, but in fact, the initial operation was not successful, and the communication across the marshalling has not been restored

Using this method is prone to large deviations;

[0011] 2. Low reliability: when the flash hardware is damaged or the module record fails, the test result cannot be calculated;

[0012] 3. Low efficiency: because it is necessary to manually download the flash data each time, check the time in the record, and then manually calculate the time difference between the two records, resulting in low calculation efficiency;

[0013] 4. Poor portability: Due to the different flash sizes and recording modes of ETBN in different projects, the initial run of ETBN in some projects may not trigger recording, so this method is not portable

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