Design And Implementation Of Airborne Digital Video Transmission System Based On ADVB Bus

With the development of modern avionics technology,the digital information exchange of airborne electronic devices has increased dramatically,and the demand for high-performance digital video transmission has become increasingly urgent.The new aviation bus technology is gradually turning to the research direction of Fibre Channel,so the release of avionics digital video bus(ADVB)standard.It is a new digital video interface and protocol standard based on the Fibre Channel protocol(FC)and Fiber Channel Audio Video(FC-AE)standards.It has the advantages of high bandwidth,low delay,long transmission distance and anti-interference.This paper based on ADVB bus designs a digital video transmission system.It is used in an aircraft airborne mission system data management device.This paper first analyzes the research status of related ADVB video transmission systems at home and abroad,and puts forward the significance and value of this paper.A brief introduction to Fibre Channel protocols and fiber-optic audio and video channel protocols.Based on this,the ADVB avionics digital video bus protocol is studied,It mainly discusses the hierarchicalstructure,container definition and frame header control protocol in the ADVB protocol container system.Secondly,according to the technical requirements of the project,the overall design plan and design idea of the system are proposed.Considering the product environment adaptability requirements,the hardware architecture uses a ruggedized VPX structure.The system uses a Kintex-7 FPGA as the core processor and a I.MX6 Q auxiliary image processor design.Briefly introduce the core hardware components and working principle of the product,including power module circuit,clock module circuit,bus communication circuit and high-speed GTX interface circuit.In terms of software and logic design,based on the Xilinx ISE 14.7 software development tool and the Modelsim 10.1a simulation debugging software,the Verilog HDL hardware description language is used to implement the logic design,and the logical operation process of each module realized by video transmission and video reception is described in detail.By simulating the test data source,the simulation software is used to capture the key signal simulation waveform and perform timing analysis.Finally,explain the principle of product testing and develop a test process plan.Set up a test platform to perform functional tests on the designed video transmission system.After verifying that the system hardware is working properly,ChipScope logic analysis software is used to capture and analyze the signal timing of key modules such as design frame packing,data parsing and buffer sending.After testing and verification,the product design meets the intended design goals.The system is designed to comply with the FC,FC-AV,and FC-ADVB protocol specifications,and supports multiple independent configurable 2.125 Gbps port rate ARINC 818 lossless HD HD 1080 video image processing requirements with high bandwidth,low latency,and high reliability.Thedesignhas been successfully applied to the prototype design of an enhanced integrated data management equipment for a certain aircraft.It has been successfully applied to the prototype design of an enhanced integrated data management equipment for a certain aircraft.