现代电子技术2017，Vol.40Issue(19)：67-70,4.DOI:10.16652/j.issn.1004-373x.2017.19.017
基于DMX512-A的LED视频控制系统
LED video control system based on DMX512-A
摘要
Abstract
Aiming at the issues such as high development cost and complex control of the current ARM+FPGA LED video control system in the market,a single-chip LED video control system based on DMX512-A protocol is proposed. The distributed storage technology is used in the system to achieve load balancing between controllers. With the MQX real-time operating sys-tem,the proposed system has high concurrency and real-time performance. The program execution efficiency was greatly im-proved by means of the memory management mode adopting multi-linked list,and in combination with prefetching and caching technologies. The remote update of the LED video is realized by using the Ethernet. The system separates the image processing from signal generation to reduce the burden for each controller. It has low cost and flexible controllability,and is suitable for small- and medium-sized outdoor LED video play.关键词
DMX512-A/LED视频/MQX/内存管理/远程更新Key words
DMX512-A/LED video/MQX/memory management/remote update分类
信息技术与安全科学引用本文复制引用
陆伟国,王宜怀,刘辉..基于DMX512-A的LED视频控制系统[J].现代电子技术,2017,40(19):67-70,4.基金项目
国家自然科学基金资助项目(60871086) （60871086）
