机载多路DVI视频信号转换器设计

Design of Airborne Multi Channel DVI Video Signal Converter

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。

Abstract:

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.