Simple simulation testing device for AFDX (avionics full duplex switched Ethernet) switch and testing method for simple simulation testing device

Abstract

The invention discloses a simple simulation testing device for an AFDX (avionics full duplex switched Ethernet) switch. The simple simulation testing device comprises a testing host, and is characterized by also comprising a loopback device; the testing host comprises two testing ports; the loopback device comprises two first ports and N second ports, wherein the two first ports are respectively connected with the testing ports of the testing host, and the N second ports are respectively connected with N switch ports of a tested AFDX switch; the first ports are connected with the second ports in the loopback device according to the connecting number of the first ports and the testing ports, and loopback processing is performed among the remaining second ports; the invention also discloses a testing method for the simple simulation testing device for the AFDX switch. According to the simple simulation testing device and the testing method thereof disclosed by the invention, the weight and the size of a testing cable are greatly reduced, and the space requirements of environmental testing sites, environmental testing equipment and the like can be met very well.

Description

technical field [0001] The invention relates to a device and method for performing simulation test on an AFDX exchange. Background technique [0002] With the development of AFDX (Aviation Full Duplex Switched Ethernet ARINC 664), AFDX is more and more widely used in avionics systems; as AFDX technology is more and more integrated into various application modules, it involves The safety level evaluation obtained is getting higher and higher, and with it comes higher and higher safety and reliability indicators and more and more stringent environmental experiment requirements. Such as figure 1 As shown, the AFDX switch simulation test device in the traditional network laboratory can fully test the functional performance of the AFDX switch, but the traditional AFDX switch network test adopts a point-to-point test method, that is, each channel of the AFDX switch under test has an independent The simulation test channel is directly connected to it, so it is necessary to config...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the AFDX switch simulation test device in the traditional network laboratory can fully test the functional performance of the AFDX switch, but the traditional AFDX switch network test adopts a point-to-point test method, that is, each channel of the AFDX switch under test has an independent The simulation test channel is directly connected to it, so it is necessary to configure N / 2 AFDX boards and core processors in the traditional AFDX simulation test device, and all AFDX boards need to be synchronized. The traditional AFDX simulation test device and the AFDX switch under test The length of the cables connected between them is usually in the "meter" level, resulting in the simulation test environment, the simulation test equipment is bulky, heavy, and difficult to transport, and it is difficult to evaluate the transport and construction costs involved in the process of switching test sites alone

Moreover, the experimental sites and experimental equipment involved in some environmental tests have limited space and cannot accommodate large-scale test cables and huge simulation test equipment. The AFDX switch simulation test environment in traditional network laboratories has been unable to be used in some environmental test sites.

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