ARINC818视频总线信号测试方法研究  

Research on Signal Testing Method of ARINC818 Video Bus

作　　者：杨宏伟[1] 韩福财 艾华龙 YANG Hongwei;HAN Fucai;AI Hualong(AVIC Shenyang Aircraft Corporation,Shenyang 110034,China)

机构地区：[1]航空工业沈阳飞机工业(集团)有限公司,沈阳110034

出　　处：《计算机测量与控制》2022年第10期22-26,共5页Computer Measurement &Control

摘　　要：ARINC818是新型航电系统通信技术,具有高带宽、低延时的特性,在航空器上应用越来越广泛;在某型号飞机上,提出多幅显示器ARINC818视频信号采集和遥测监控的要求;视频采集要求信号与采集设备接口匹配,遥测传输要求在较低的码率下进行,也就是要对高码率、非压缩原始视频信号大比率压缩,并且要保证传输画面质量、传输时延及遥测系统作用距离等技术指标;通过对视频信号和测试接口进行研究分析,采用视频转换、H264视频压缩等关键技术在飞机上实现多幅显示器画面采集及遥测传输,经试飞验证表明,测试方法正确,工程应用稳定性好、可靠性高,传输画面质量清晰流畅,链路时延和遥测系统作用距离能够满足实时监控要求。Based on the protocol of ARINC 818,a new communication technology of avionics system has the characteristics of high bandwidth and low delay,and is widely used in aircraft.On a certain type of aircraft,the requirements of the ARINC818 video signal acquisition and telemetry monitoring with multiple displays are put forward.Video acquisition requires the interface to match with the acquisition equipment,and telemetry transmission requires under the condition of low bit rate,that is,the original video signal with high bit rate and no compression should be compressed at large ratio,and the technical indicators such as transmission picture quality,transmission delay and telemetry system operating distance should be ensured.Through the research and analysis of video signal and test interface,the key technologies of video conversion,H264 video compression and pulse code modulation are adopted to realize the acquisition and telemetry transmission of multiple display images on the aircraft.The flight test shows that the test method is correct,the engineering application is stable and reliable,the transmission image quality is clear and smooth,and the link delay and operating distance of telemetry system can meet the requirements of the real-time monitoring.

关 键 词：ARINC818 DVI 帧率 分辨率 分光器 H264 带宽 遥测系统 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]