DLP背投大屏幕系统设计及应用

发布时间：2018-03-15 09:50

本文选题：DLP大屏幕　切入点：大屏幕拼接墙　出处：《昆明理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着计算机技术、图像处理技术和显示技术的发展,大屏幕显示设备日趋成熟,性价比越来越高,特别是DLP显示技术的出现,克服了CRT和LCD显示技术亮度低、对比度弱和色彩一致性差的弱点,逐步成为监控中心的显示系统今后的发展趋势。数字光处理(Digital Light Processing-DLP)技术打破了传统模拟显示的局限,提高了数字视频的潜能,由于DLP的数字化特性,使其能够产生高亮度、高对比度和高分辨率的显示图像,因此,基于DLP技术的应用越来越多。加速信息化的建设将使行业和商业市场对与投影及大屏幕显示设备的需求持续保持高增长,教育信息化的深入和政务、城市信息化的普及,以及随着经济发展日益活跃起来的各种商务活动,将成为未来行业和商务市场对投影及大屏幕显示设备需求的主力。目前国内各类应急指挥中心、城市交通、业务调度中心的大屏幕显示系统基本上采用了DLP背投拼接大屏幕显示系统。随着整个行业的不断成熟,客户和企业的发展也逐渐变得理性起来,作为推动大屏幕背投拼接显示行业发展的中坚力量,将推动整个大屏幕拼接显示系统行业的健康快速的发展。为此,本论文在查阅相关文献资料的基础上,研究分析了现有DLP背投大屏幕箱体系统的设计方法,以及其存在的不足之处,开展了大屏幕箱体单元的硬件部分设计(箱体的机械结构设计,反射镜的安装位置确定,投影机型号和屏幕类型选择)以及DLP背投大屏幕箱体系统的软件程序设计。通过研究得到以下结论： (1)通过对现有的大屏幕箱体结构的分析,设计了一种开放式的箱体结构,打破了原有箱体独立单元的结构,使得箱体在于重量、成本、运输等方面,得到了很大的改善。 (2)通过对现有的树脂屏的分析,设计了一种机械结构,利用弯折片状结构中部区段的平面可绕该段板面的法线方向旋转的特点,使两端平面沿与中部区段平面平行的方向产生相对位移,解决了树脂屏会因为大屏幕周围环境温度的变化,而热胀冷缩,使之屏幕内部产生张力,导致屏幕的撕裂、挤碎、脱落等现象。而且用此两端的平面连接两种不同的材料,可使之允许不同的材料产生一定的位移,从而释放其产生的应力,接纳其形变。 (3)通过对投影机的分类和参数的选择,特别是投影机的镜头比参数的研究,解决了大屏幕箱体单元的厚度设计问题。 (4)通过对大屏幕显示系统软件的研究,设计了一套操作简单,快速掌握,条例清晰的软件程序。很好的解决了以往由于箱体单元过多,而导致程序软件很复杂的现象。大屏幕的控制软件系统,其中包含了控制软件的界面,操作步骤,还有拼接服务端的服务指令。方便与用户对于系统的了解和掌握。这个控制软件界面的开发,是我们公司自主研发的,操作简单,也比较容易掌握。本论文设计的DLP背投大屏幕,不仅解决了传统DLP大屏幕箱体大而笨重的结构,而且也解决了屏幕因热胀冷缩而产生张力的问题。有一定范围的通用性和广阔的发展前景。
[Abstract]:With the development of computer technology, image processing technology and the development of display technology, large screen display equipment has become more and more mature, more cost-effective, especially DLP display technology, CRT display technology and LCD to overcome the low brightness, contrast and color consistency weak weakness, gradually become the future development trend of display system the center of digital light processing (Digital Light Processing-DLP) technology has broken the limitation of conventional analog display, improves the digital video potential, due to the digital characteristics of DLP, which can produce high brightness, high contrast and high resolution images, therefore, more and more applications based on DLP technology to accelerate informatization construction. The industry and commercial markets with projection and large screen display equipment needs continue to maintain high growth, the development of education informationization and the popularization of e-government, city informatization, and with the With the economic development and growing up of various business activities, will become the future of the industry and commerce market demand for the main display device and projection screen. At present, all kinds of emergency command center, city traffic, traffic scheduling center of the large screen display system basically adopts the DLP rear projection large screen splicing display system. With the industry constantly mature, customers and the development of enterprises has gradually become rational, as the backbone of the industry that promotes the development of large screen projection mosaic, will promote the development of large screen display system industry healthy and rapid.
Therefore, based on the relevant literature review, research and analysis of the current design method of DLP rear projection big screen box system, and its shortcomings, to carry out the design of the hardware part of the big screen box unit (mechanical structure design, the installation location of the mirror to determine the type and type selection screen, projector) and DLP rear projection big screen box system software design. The conclusions are as following:
(1) by analyzing the structure of the existing large screen box, an open box structure is designed, which breaks the structure of the original independent unit and makes the box body greatly improved in terms of weight, cost and transportation.
(2) through the analysis of the existing resin screen, designed a kind of mechanical structure, the characteristics of normal direction by the plane bending sheet structure in the central section around the surface of the rotation of the plane along the central section and the ends of plane parallel to the direction of relative displacement, solve the resin due to changes in the big screen screen the ambient temperature, and thermal expansion and contraction, internal to screen tension, causing screen tearing, crushing, fall off and so on. And the connection of two different materials with the ends of the plane, can produce a certain displacement allows different materials, thereby releasing the stress, the deformation of acceptance.
(3) through the classification of the projector and the selection of the parameters, especially the study of the lens ratio of the projector, the design of the thickness of the large screen box unit is solved.
(4) through the research on the large screen display system software, design a set of simple operation, rapid control, clear regulations of the software program. It solved the housing unit because of too much, resulting in software complex phenomenon. The control software system of large screen, which includes control software the interface, operation steps, and splicing server service commands. Convenient and user for the system to understand and grasp the development of the control software. The interface, is our company independent research and development, but also has the advantages of simple operation, easy to grasp.
The DLP rear projection large screen designed in this paper not only solves the large and cumbersome structure of the traditional DLP large screen box, but also solves the problem of the tension generated by the thermal expansion and contraction of the screen. It has a certain range of versatility and broad prospects for development.

【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN873

【参考文献】