led图文显示系统论文

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1、电子信息工程学院电子设计大赛论文LED图文显示系统报告参赛人员：任毅超王悦润孙立财参赛时间：2014.5.11——2014.6.16指导教师：邵清亮目录摘要···············································3一、任务要求·······································41.基本要求····································42.发挥部分····································4二、总体方

2、案设计···································51.系统分析·····································52.方案论证·····································53.方案设计46·····································64.系统总体方框图·······························6三、电路与程序设计·································73.1电路设

3、计···································73.1.1单片机选择及系统电路···················73.1.2亮度自动调节装置·······················83.1.3电路稳压模块···························83.1.4电平检测电路···························93.2程序设计···································93.2.146主函数·······················

4、··········93.2.2定义STC12C5A16S2的各拐角功能·········103.2.3二极管检测····························103.2.4从大到小亮同心圆······················113.2.5从小到大亮同心圆······················123.2.6显示“IT”·····························133.2.7显示“电”·····························143.2.8显示“时钟”········

5、··················163.2.9电机起转函数·························173.2.10电机停转函数·························18463.2.11消息等待·····························19四、测试结果······································214.1测试工具··································214.2测试结果完整性························

6、····214.3测试结果分析······························21五、参考文献······································22六、附录··········································23附录一控制电路电路图·························23附录二设计源程46序·····························24附录三元器件清单·····························43摘要LED

7、旋转显示器时基于视觉暂留原理，开发的一种旋转式LED显示屏。本设计基于STC89C52RC单片机，通过步进电机带动旋转，在具有一定转速地载体上安装16个LED发光器件，各LED发光管等间距排位一条直线，随着旋转速度的加快，不断扫描出预设的文字，图案等。46针对传统LED显示屏视角单一、体积较大、需要的发光二极管数目较多等特点，利用电机带动LED显示阵列高速旋转实现环形显示，达到360全视角，在相同显示信息量上降低产品体积，减少对发光二极管的使用，设计一个可以经常方便变换内容、能够携带方便、信息容量大、价格低廉、结构简单的

8、信息播放系统，即旋转LED显示屏。实际制作的LED旋转显示屏技术参数的测试结果，以及实际的运行效果表明，本文设计和制作的旋转显示屏基本符合设计的基本要求，具有一定的创新性与实际应用价值。设计关键词：STC12C5A16S2单片机，视觉暂留，步进电机。一、任务要求1.基本要求（1）制作一个由16只LED构成的线状点阵及