基于51单片机的POV-LED旋转时钟设计(附电路图,元器件清单,程序清单)(论文12000字)
摘要：现如今，LED显示屏在银行、学校、步行街等场所都有着广泛的应用。较之于普通的海报和静态的图片，它拥有更多样的变化，并且它的功耗小、使用寿命长，但是，由于在实际应用中要用很大的显示屏以达到目的，LED显示屏通常需要花费较大的成本，且它的加工工艺也较麻烦；同时，如果你在离显示屏很近的地方观看，你会有一种刺眼的感觉，并且它显示出的结果也不一定能合人心意。
本文提出了一种基于视觉暂留技术的LED旋转时钟。它利用旋转LED的方式代替传统LED显示屏的扫描方式，且使用较少的LED就可以显示出需要的功能。较之于传统LED显示屏，旋转LED有着许多突出的优点。本文会对旋转时钟的工作原理、方案的选取以及整体框架的设计作出说明，同时也会阐明硬件、软件两方面的设计过程。此外，本文还给出了设计中遇到的一些问题的解决方法。
关键字：LED显示屏；视觉暂留；无线电源
Design Of POV-LED Rotating Clock Based On 51 MCU
Abstract：Nowadays, the LED display has a wide application in the bank, school, pedestrian street and other places. Compared with ordinary posters and static pictures, it has more varieties, small power consumption and long service life. However, because of the large screen used in practical applications to achieve the goal, LED display usually needs to spend more cost, and its machining technology is very trouble; At the same time, if you watch the screen in a close distance, your will have a sense of glare, and the effect it shows may not be satisfactory.
This paper presents a LED rotating clock technology based on the persistence of vision. It uses the rotating LED mode instead of the traditional LED screen scanning mode, and you can display the function you need with less LED. Compared with the traditional LED display, rotating LED has outstanding advantages. This paper not only puts out the work principle of rotation of the clock, the selection of the plan and the design of the overall framework, but also illuminates the design process of the hardware and software.In addition, this paper also gives some solutions to the problems encountered in the design.
Key words：LED display;persistence of vision;Wireless power
目 录
摘要.......................................................1
Abstract...................................................2
1.引言.....................................................3
1.1 背景...................................................................3
1.2 国内外研究现状.........................................................4
2.旋转时钟原理.............................................5
2.2 视觉暂留...............................................................5
2.3 旋转时钟原理...........................................................5
3.设计方案.................................................7
3.1 设计目标...............................................................7
3.2 系统方案...............................................................7
3.3 显示板供电.............................................................7
3.4 显示板供电.............................................................8
4.硬件设计.................................................9
4.1 整体电路图.............................................................9
4.2 单片机相关电路.........................................................9
4.3 无线供电电路和供电板电路..............................................12
4.4 LED驱动电路..........................................................13
4.5 时钟电路和红外对管电路................................................15
4.6 红外遥控..............................................................16
5.软件设计................................................18
5.1 主程序流程图..........................................................18
5.2 DS1302与单片机通讯程序...............................................19
5.3 红外接收电路程序设计..................................................20
6.设计结果................................................21
6.1 设计相关软件..........................................................21
6.2 测试方法..............................................................23
7.结语....................................................24
参考文献..................................................25
致谢......................................................26
附录......................................................27
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