基于FPGA的8路VGA长线传输系统设计
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摘要
从军用多路长线传输系统的应用需求出发,以长线传输和多路切换的核心功能为研究对象,通过研究现有军用切换矩阵中存在的问题,从芯片级设计着手,研制具有长距离传输能力的切换矩阵收发设备。在目前切换矩阵的基础上,采用FPGA硬件平台与差分传输技术,将差分长线传输功能与切换矩阵功能相结合,设计一套包含发送端和接收端的8路VGA长线传输系统。试验结果表明,该系统有效改善了切换矩阵性能,保证了信号可靠、稳定地进行长距离传输。
Based on the need of multi-channel long-distance military transmission system,this paper studied the long-term transmission function and multi-switching function. By studying the current problems in military switch matrix,and proceeding from the chip-level design,a set of sending and receiving devices is developed. To analyze the current problems of switch matrix in depth,we studied the differential cable transmission technology. Based on the use of FPGA hardware platform and the differential transmission technology,we combined the long-term transmission with the differential switching matrix innovatively to design an eight channels VGA long-distance transmission system. The results showed that the system improved the performance of switch matrix and the signal quality in long-distance transmission.
Based on the need of multi-channel long-distance military transmission system,this paper studied the long-term transmission function and multi-switching function. By studying the current problems in military switch matrix,and proceeding from the chip-level design,a set of sending and receiving devices is developed. To analyze the current problems of switch matrix in depth,we studied the differential cable transmission technology. Based on the use of FPGA hardware platform and the differential transmission technology,we combined the long-term transmission with the differential switching matrix innovatively to design an eight channels VGA long-distance transmission system. The results showed that the system improved the performance of switch matrix and the signal quality in long-distance transmission.
引文
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[8]薛小刚,葛毅敏.Xilinx ISE 9.x FPGA/CPLD设计指南[M].北京:人民邮电出版社,2007.
[9]刘韬,楼兴华.FPGA数字电子系统设计与开发示例导航[M].北京:人民邮电出版社,2006.
[10]夏宇闻.Verilog数字系统设计教程[M].2版.北京:北京航空航天大学出版社,2008.
[11]赵家凤.视频信号的双绞线传输和应用[Z].北京兆科恒业电子技术有限公司,2005.
[12]Miles Bekgran.如何利用差分信令获得更好的模拟视频信号[Z].美信公司,2005.
[13]DS16EV5110A Video Equalizer(3D+C)for DVI,HDMI Source/Repeater/Sink applications[Z].National Semiconductor,2009.
[14]顾海洲,马双武.PCB电磁兼容技术——设计实践[M].北京:清华大学出版社,2004.
[15]吕文红,郭银景,唐富华,等.电磁兼容原理及应用教程[M].2版.北京:清华大学出版社,2008.
[16]李小平.高速PCB信号完整性、电源完整性和电磁兼容性研究[D].成都:四川大学,2005.
[17]百度文库.音频/视频接口的EMI/EMC抑制[DB/OL].http://wenku.baidu.com/view/00066e12a216147917112-83d.html,2016-05-20.