标题: | 大型LED显示器扫描机构之设计与制作 The Design and Manufacture of Scanning Mechanisms for Large LED Display |
作者: | 陈建扬 CHIEN YANG CHEN 邱俊诚 Jin Chern Chiou 电控工程研究所 |
关键字: | 显示器;扫描机构;皮带;皮带轮;旋转;往复;视觉暂留;display;scanning mechanism;conveyer;pulley;rotate;reciprocate;LED |
公开日期: | 1999 |
摘要: | 对一个半室外型的全彩LED显示器,由于其高亮度的LED相当的昂贵,为了减少制造的成本,所以希望能减少LED的用量。而其方法就是利用人类视觉暂留的原理,以机械方式做一维空间的扫描,使少数排之条状LED阵列表现整体画面的影像。 由此可知,主要的关键问题在于此半电子半机械混合扫描机构是否可以稳定的提供一个往复的周期运动,而在此快速运动下,电力与讯号是否可以顺利的导入LED模组上。故本论文的目的就是希望能设计出一个扫描机构,且能正确的输电,并能稳定的显示画面,以达到制造成本大量降低的好处。所采用的方法为: 1.平面旋转式:利用马达带动皮带和皮带轮组使其做旋转式的扫描。 2.往复扫描式:包括有振动往复式与crank-slider 往复式,使其做来回的往复式运动。 For a half-outdoor full color LED display, because it is very expinsive for the high illumination LED, we hope to reduce the LED quantity for reducing the cost for manufacturing. The method is using the theorem of people’s halting vision and that making one dimension scanning by mechanism is to make fewer LED of column to perform a complete image. Thus it can be seen, the key point is that if the scanning mechanism of half electric and half mechanism can been provided a reciprocation of a cycle stably, and when it is moving so quickly, the power and signal can been transport to LED module successfully. Thus, the purpose of this paper is to design a practicable scanning mechanism and transport the power and signal successfully for reducing manufacturing cost. We use the method : 1.Rotating with flat surface : driving conveyer and pulley by motor is to make them scanning with rotating. 2.Scanning with reciprocation : including vibrating with reciprocate and reciprocate with crank-slider, we use the to reciprocate. 英文摘要……………………………………………………………………..ii 志谢…………………………………………………………………………iii 目录………………………………………………………………………….iv 表目录……………………………………………………………………….vi 图目录……………………… ………………………………………...…vii. 第一章 绪论……………………………………………..………………1 1.1 研究背景…………………………………..……….1 1.2 研究动机与目的……………………………………………………...2 1.3 论文架构……………………………………………………………...3 第二章 发光二极体的简介…………………………………………4 2.1 发光二极体的发光机构…………………………………...4 2.2 发光二极体的材料与种类…………………………………………...7 2.3 发光二极体的规格简述…………………………………………….10 2.4 总结………………………………………………………………….12 第三章 LED扫描显示器的机构设计-旋转式…….…………13 3.1 设计原理……………………………………………………….13 3.2 平面旋转式的机构设计…………………………………………….15 3.3 平面旋转式的显示机构分析……………………………………….21 3.4 总结………………………………………………………………….24 第四章 LED扫描显示器的机构设计-往复式…………….…26 4.1 往复扫描的行程参数定义………………………………………….26 4.2 振动往复式的机构设计…………………………………………….29 4.3 振动往复式的显示机构分析……………………………………….30 4.4 crank-slider往复式的机构设计…………………………………….33 4.5 crank-slider往复式的显示机构分析……………………………….34 4.5.1 扫描机构运动方程式的原理………………………………..34 4.5.2 显示机构分析………………………………………………..36 4.5.2.1 转速分析………………………………………………37 4.5.2.2 机构分析(1)-涟波分析………………………………..37 4.5.2.3 机构分析(2)-运动及动力分析………………………..45 4.6 往复式的位置感测机构分析………………………………………48 4.7 总结…………………………………………………………………51 第五章 实验验证……………….…………………………………….53 5.1 扫描机构的建立…………………………………………….53 5.2 实验结果…………………………………………………………….58 5.3 总结……………………………………………….……………….63 第六章 结论……………………………………………………………64 参考文献………………………………………………………………………68 附录一…………………………………………………………………………69 |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT880591052 http://hdl.handle.net/11536/66285 |
显示于类别: | Thesis |