遥控LED广告牌 雷开卓，童 琦，张立杰，黄建国 (西北工业大学航海学院，陕西 西安 710072） 摘 要： 提出了通过手持发射机遥控LED广告牌的新方案，讨论了高稳定性无线数字通信的系统方案，分析 了图像点阵抽取和移动算法、信源编码译码、高频发射接收、单片机控制及馈电系统等关键技术，给出了硬件结构框图和软件流程图。实验结果表明，整机性能可靠，使用方便，性价比高。 关键词： LED广告牌；无线遥控；编码译码；抽取和移动算法；码分多址 A Remoteª²controlling LED Billboard LEI Kaizhuo, TONG Qi, ZHANG Lijie, HUANG Jianguo (College of Marine, Northwestern Polytechnical University, Xi ′ an Shaanxi 710072 China) Abstract: A new project that remoteª²controlling LED billboard through a portable transmitter is brought forward, the system schemes of wireless digital communicating with high stability are discussed, some key techniques such as image lattice sampling and removing algorithm, highª²frequency sending and receiving, MCU control system and power supply are analyzed, and the hardware frame block and software flow……
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