Research On The Incentive Technology Of Avionics System Based On Virtual Link

The simulation and verification of avionics system is an important step in the development of avionics system, and it provides functional verification, interfaces verification for avionics unit. As the core of avionics simulation system, the avionics incentive system provides incentive signal, receives and processes response signal, and completes other work.AFDX is the communication bus of integrated modular avionics architecture, and improves the bandwidth of aviation bus and quality of service with virtual link and redundancy technology. To establish the incentive system based on AFDX, it can adapt to the development of new avionics architecture, and provides protection for the simulation and verification of new avionics system.A general, flexible, extensible incentive system is designed, and it based on AFDX,researched on the communication and navigation system. The incentive system can provide AFDX signal through the virtual link of the system configured, and receives the response signal from avionics units. The incentive system observes the running status of avionics system through the display of response signal, and meets the requirement of simulation. The incentive system can provide incentive signal for different avionics structures.Firstly, the development of the avionics architecture is introduced, and the article indicates the advantage of the AFDX bus through comparing with the traditional avionics bus.And the article introduces the characteristic, fundamental part and protocol system of AFDX through analyzing the ARINC664 protocol.Secondly, the functional requirement of the incentive system is analyzed. The incentive signal and corresponding parameter type on the need of communication and navigation system, and the different real-time requirements of the signal, and the mode of the incentive system in the simulation process are researched.Thirdly, the incentive system is overall designed, and it is summarized the design principles. Follow the principles, the hierarchical model of the incentive system is established,the functional modules of the incentive system are divided in accordance with the function,and the man-machine interface is designed.Finally, the main functions of the incentive system are tested, including transmit and receive AFDX signal function of the incentive system, and verifies whether the incentive system achieve the desired effect.