Simulation verification system for AFDX (Avionics Full Duplex Switch Ethernet) network of avionics system based on OPNET

Abstract

The invention provides a simulation verification system for an AFDX (Avionics Full Duplex Switch Ethernet) network of an avionics system based on OPNET. The system comprises an end system sending data module, a switch forwarding data module, an end system receiving data module and an AFDX network transmission link module, wherein the end system sending data module is used for generating a data packet which conforms to an AFDX network protocol and sending the data packet to a switch; the switch forwarding data module is used for managing and forwarding the data packet sent by the end system sending data module; the end system receiving data module is used for carrying out unpacking processing on the received data packet forwarded by the switch forwarding data module; and the AFDX network transmission link module is used for connecting a physical device in an AFDX network. The system in the embodiment of the invention is constructed by the AFDX network based on OPNET, the network structure is integrated, the function is complete, the system is convenient to verify the network performance and perfectly research the AFDX protocol standard, and meanwhile, fault injection is carried out on each level, so that a data source can be provided for development of a network health management algorithm.

Description

technical field [0001] The invention relates to the field of avionics, in particular to an OPNET-based avionics system AFDX network simulation verification system. Background technique [0002] With the development of avionics systems toward integration, modularization, and integration, and the robustness of avionics systems, the AFDX (AvionicsFullDuplexSwitchEthernet, avionicsFullDuplexSwitchEthernet) protocol standard has become the standard for large aircraft. The mainstream data communication standard. AFDX is an aviation bus technology developed on the commercial Ethernet IEEE802.3, but some special technologies are added to ensure the bandwidth requirements and service quality of the avionics network. At present, AFDX has been widely used in large passenger aircraft such as Airbus A380 and Boeing B787. In the large aircraft C919 project being developed in my country, AFDX bus technology has also been introduced. As the mainstream avionics bus technology, the applicat...

AI Technical Summary

Problems solved by technology

[0004] In addition, for the current simulation verification of the AFDX network, the data packets transmitted in the network are often simply used as a transmission unit, and the specific content and format involved in the data packets are not simulated.

Therefore, when studying network fault injection, it is not possible to further subdivide the content of fault injection

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