机载多路DVI视频信号转换器设计

摘要

为了实现基于高速航电总线的多路DVI视频信号的采集及实时检测,提出了机载多路DVI视频信号转换器的设计方案;针对高速航电总线多路DVI视频信号速率高、实时性强的特点,完成了信号均衡、信号预加重及高速信号全交叉设计,采用单片机完成对转轮开关的采集、消抖和判断,通过配置相应寄存器完成测试DVI口的通道切换功能;实验结果表明,该机载多路DVI视频信号转换器稳定性好、可靠性高、实时性强,解决了高速航电总线多路DVI视频信号的检测难题,满足设计需求.%In order to realize multi channel DVI video signal acquisition and real-time detection based on high speed avionics bus,a design scheme of airborne multi-channel DVI video signal converter is proposed.According to the characteristics of high speed and high real -time of multi channel DVI video signal in high speed avionics bus,According to the characteristics of multi-channel DVI video signal rate high speed avionics bus,high real-time,complete the signal equalization,signal pre emphasis and high-speed signal crossover design,using MCU to wheel switch acquisition,debounce and judgment,by configuring the corresponding register complete channel switching function test DVI port.The experimental results show that the airborne multi-channel DVI video signal converter has the advantages of good stability,high reliability and strong real-time performance,and solves the problem of detecting the multi-channel DVI video signal of high-speed avionics bus.