LED屏显控制系统设计与数据存储结构研究
发布时间：2019-05-17 09:19
【摘要】： LED显示屏是利用发光二极管构成的点阵模块或像素组成大面积显示屏幕的一种新型信息显示媒体,它凭借色彩鲜艳、动态性能好、使用寿命长、环境适应能力强、性价比高、耗能小等特点,广泛应用于广告、证券、信息传播、新闻发布等各个场合。 伴随着LED显示屏应用范围及应用技术的推广与普及,关于LED屏显示控制系统的研究也越来越多。然而现有的研究,大多侧重于基于单片机、ARM、DSP、FPGA等不同芯片的不同版本的实现,很多显示系统都存在存储效率不高、访问速度不快、修改数据不方便等问题,限制了LED信息显示系统的应用及发展。本文正是在此背景下,对LED显示系统的数据存储结构进行了深入的研究。 文章首先介绍了系统的整体设计方案,给出了系统的设计目标,明确了设计的方向。紧接着,给出了系统的结构框图并对系统中各主要部分分别做了介绍,对他们各自的功能做了简要说明。文章提出了一种新的MCU与CPLD协同的方法：片内乒乓协同法,该方法只需要一块独立的显示缓存。文章划分了显示系统中数据的种类,并在此基础上对上位机与下位机通信过程中用到的通信协议进行了详细的设计。 文章对数据结构的基本知识做了介绍,在此基础上对LED显示系统的数据存储结构进行了深入的研究,设计了三种显示系统存储空间分配策略：固定地址分配、连续分配和动态分配,四种显示系统存储结构：顺序表结构、链表结构、索引结构和复合结构。文章介绍了它们的基本思想,并用程序设计语言对它们进行了描述,分析了他们各自的优缺点并给出了适用的场合。最后给出了它们的一个应用实例,设计了一种复合存储结构,综合了分配策略及存储结构的知识且应用了多种存储结构,使得系统同时具有访问速度快及存储空间利用率高等优点。 文章对系统实现中图文信息的编辑、字模信息的提取、特效显示方式的设计以及上位机与下位机之间的通讯程序的设计做了详细设计与研究。其中图文信息的编辑重点介绍了图像的压缩与分页、字符的分页显示技术；字模信息的提取重点分析了它的提取过程；上位机与下位机之间的通讯则从通信两端的角度对通讯程序作了详细介绍；特效显示方式的介绍则以向上连移算法及向左连移算法两个典型算法为例作了详细的描述。 文章最后对控制系统的各功能模块一一做了测试,经测试,这些功能模块均达到设计目标,且操作简单、方便。文章借助工具对显示系统的的数据存储结构做了测试,经测试,系统完全按照设计的分配策略来分配存储空间,完全按照设计的存储结构来存储数据,具有存储空间利用率高、存储方式灵活等优点。
[Abstract]:LED display screen is a new type of information display media which uses lattice module or pixel composed of light-emitting diode to form a large area display screen. It has bright colors, good dynamic performance, long service life, strong environmental adaptability and high performance-price ratio. Low energy consumption and other characteristics, widely used in advertising, securities, information dissemination, press release and other occasions. With the popularization and popularization of LED display screen application scope and application technology, there are more and more research on LED screen display control system. However, most of the existing research focuses on the implementation of different versions of different chips, such as single chip microcomputer, ARM,DSP,FPGA and so on. Many display systems have some problems, such as low storage efficiency, slow access speed, inconvenient data modification and so on. It limits the application and development of LED information display system. Under this background, the data storage structure of LED display system is deeply studied in this paper. In this paper, the overall design scheme of the system is introduced, the design goal of the system is given, and the direction of the design is defined. Then, the structure block diagram of the system is given and the main parts of the system are introduced respectively, and their respective functions are briefly described. In this paper, a new collaborative method between MCU and CPLD is proposed, which only needs an independent display cache. In this paper, the types of data in the display system are divided, and the communication protocols used in the communication process between the upper computer and the lower computer are designed in detail. In this paper, the basic knowledge of data structure is introduced, on the basis of which the data storage structure of LED display system is deeply studied, and three storage space allocation strategies of display system are designed: fixed address allocation. Continuous allocation and dynamic allocation, four kinds of display system storage structures: sequential table structure, linked list structure, index structure and composite structure. This paper introduces their basic ideas, describes them with programming language, analyzes their respective advantages and disadvantages, and gives a suitable occasion. Finally, an application example of them is given, and a composite storage structure is designed, which integrates the knowledge of allocation strategy and storage structure, and applies a variety of storage structures. The system has the advantages of fast access speed and high utilization of storage space at the same time. In this paper, the editing of graphic and text information, the extraction of font information, the design of special effect display mode and the design of communication program between upper computer and lower computer are designed and studied in detail. Among them, the editing of graphic and text information focuses on image compression and paging, character pagination display technology, the extraction of font information focuses on the analysis of its extraction process. The communication between the upper computer and the lower computer is introduced in detail from the point of view of both ends of the communication, and the special effect display mode is described in detail by taking two typical algorithms, the upward continuous algorithm and the left continuous moving algorithm, as examples. At the end of the paper, each function module of the control system is tested one by one. After testing, these functional modules achieve the design goal, and the operation is simple and convenient. In this paper, the data storage structure of the display system is tested with the help of tools. after testing, the system allocates storage space according to the designed allocation strategy and stores the data according to the designed storage structure, which has high utilization ratio of storage space. Flexible storage mode and other advantages.
【学位授予单位】：湖南师范大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TP273
本文编号：2478987
[Abstract]:LED display screen is a new type of information display media which uses lattice module or pixel composed of light-emitting diode to form a large area display screen. It has bright colors, good dynamic performance, long service life, strong environmental adaptability and high performance-price ratio. Low energy consumption and other characteristics, widely used in advertising, securities, information dissemination, press release and other occasions. With the popularization and popularization of LED display screen application scope and application technology, there are more and more research on LED screen display control system. However, most of the existing research focuses on the implementation of different versions of different chips, such as single chip microcomputer, ARM,DSP,FPGA and so on. Many display systems have some problems, such as low storage efficiency, slow access speed, inconvenient data modification and so on. It limits the application and development of LED information display system. Under this background, the data storage structure of LED display system is deeply studied in this paper. In this paper, the overall design scheme of the system is introduced, the design goal of the system is given, and the direction of the design is defined. Then, the structure block diagram of the system is given and the main parts of the system are introduced respectively, and their respective functions are briefly described. In this paper, a new collaborative method between MCU and CPLD is proposed, which only needs an independent display cache. In this paper, the types of data in the display system are divided, and the communication protocols used in the communication process between the upper computer and the lower computer are designed in detail. In this paper, the basic knowledge of data structure is introduced, on the basis of which the data storage structure of LED display system is deeply studied, and three storage space allocation strategies of display system are designed: fixed address allocation. Continuous allocation and dynamic allocation, four kinds of display system storage structures: sequential table structure, linked list structure, index structure and composite structure. This paper introduces their basic ideas, describes them with programming language, analyzes their respective advantages and disadvantages, and gives a suitable occasion. Finally, an application example of them is given, and a composite storage structure is designed, which integrates the knowledge of allocation strategy and storage structure, and applies a variety of storage structures. The system has the advantages of fast access speed and high utilization of storage space at the same time. In this paper, the editing of graphic and text information, the extraction of font information, the design of special effect display mode and the design of communication program between upper computer and lower computer are designed and studied in detail. Among them, the editing of graphic and text information focuses on image compression and paging, character pagination display technology, the extraction of font information focuses on the analysis of its extraction process. The communication between the upper computer and the lower computer is introduced in detail from the point of view of both ends of the communication, and the special effect display mode is described in detail by taking two typical algorithms, the upward continuous algorithm and the left continuous moving algorithm, as examples. At the end of the paper, each function module of the control system is tested one by one. After testing, these functional modules achieve the design goal, and the operation is simple and convenient. In this paper, the data storage structure of the display system is tested with the help of tools. after testing, the system allocates storage space according to the designed allocation strategy and stores the data according to the designed storage structure, which has high utilization ratio of storage space. Flexible storage mode and other advantages.
【学位授予单位】：湖南师范大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TP273
【引证文献】
相关期刊论文 前1条
1 杨内;;LED显示屏智能配置的设计与实现[J];现代显示;2011年03期
相关硕士学位论文 前2条
1 徐孟龙;太阳能无线LED信息显示系统的研究[D];湖南师范大学;2011年
2 邱云平;基于ARM的LED显示屏设计 及显示效果的算法研究[D];西南交通大学;2012年
，本文编号：2478987
本文链接：https://www.wllwen.com/wenyilunwen/guanggaoshejilunwen/2478987.html
