大型展览会智能MP3播放系统设计

发布时间：2018-11-23 06:56

【摘要】：随着改革开放的不断地深入,会展业蓬勃发展起来,从展览的环境、设施、规模、影响等来看,我国已经成为亚洲的会展大国,会展活动成为服务行业中一个新的亮点,甚至成为一些城市的支柱产业和带动地区经济发展的新经济增长点。为了各参展人员在大型展览会上更好的交流,以及能及时有效的了解各展区展品的相关资料,需要良好的语音播放系统。目前MP3播放器因其播放音质好、可靠性高、操作便捷等特点,也开始应用在会展播音系统中。普通的MP3播放器存储介质单一、容量小、功能单一,需要进行专门的设计方能满足会展播音系统的要求。因此根据目前音频技术的发展和大型展览会对语音播放的需求,大型展览会智能MP3播放系统应具有很大的灵活、通用性和实用性。基于此目的,本文设计了一款基于GPL162003A处理器,内嵌有操作系统的智能MP3播放系统,该系统的设计提供了USB接口、SD卡接口,可以连接不同的存储设备,突破了容量的限制;能提供便捷化下载语音,高质量播报语音;具有上位机配置系统,能对联动设备进行控制,以达到更好地组织展览会工作的目的。本文首先介绍了大型展览会智能MP3播放系统的特点,详细分析了系统的功能需求和要达到的性能指标,在此基础上给出了系统的总统设计方案。本文全面论述了大型展览会智能MP3播放系统的硬件设计与实现,给出了系统硬件结构图,对各个子模块:GPL162003A基本电路、存储器电路、音频播放电路、实时时钟和GPS校时电路、联动设备控制电路、电源电路等进行了详细设计;本文还说明了μC/OS-II在GPL162003A上的移植过程,详述了智能MP3播放系统软件设计,主要涉及MP3解码播放模块、键盘模块、液晶显示模块、USB通讯模块、SD卡通讯模块、时钟校时模块、红外遥控模块的软件编程思路、流程及部分程序。本项目在完成软硬设计的基础上,进行了样机的制作,以及一系列的测试和相应的分析,经调试实验说明所设计的大型展览会智能MP3播放系统的各项功能能满足设计要求,可达到预期设计目标。
[Abstract]:With the continuous deepening of reform and opening up, the convention and exhibition industry has flourished. Judging from the environment, facilities, scale and impact of the exhibition, China has become a big exhibition country in Asia, and exhibition activities have become a new bright spot in the service industry. Even become the pillar industry of some cities and drive the new economic growth point of regional economic development. In order for the exhibitors to communicate better at large exhibitions and to be able to understand the relevant materials of exhibits in a timely and effective manner, a sound voice broadcasting system is needed. At present, MP3 player has been used in the exhibition broadcasting system because of its good sound quality, high reliability, convenient operation and so on. The ordinary MP3 player has a single storage medium, small capacity and a single function, so it needs a special design to meet the requirements of the exhibition broadcasting system. Therefore, according to the development of audio technology and the demand of voice playing in large-scale exhibition, the intelligent MP3 playing system of large-scale exhibition should be flexible, versatile and practical. For this purpose, this paper designs an intelligent MP3 playback system based on GPL162003A processor with embedded operating system. The design of the system provides USB interface and SD card interface, which can connect different storage devices and break through the limit of capacity. It can provide convenience to download voice and broadcast voice of high quality, and has the upper computer configuration system, which can control the linkage equipment in order to better organize the exhibition work. This paper first introduces the characteristics of the intelligent MP3 playing system of the large-scale exhibition, and analyzes in detail the functional requirements and performance indexes of the system. On the basis of this, the president design scheme of the system is given. In this paper, the hardware design and implementation of the intelligent MP3 playing system for large-scale exhibition are discussed, and the hardware structure diagram of the system is given. For each sub-module: the basic circuit of GPL162003A, the circuit of memory, the circuit of audio playback, the real time clock and the circuit of GPS timing. The control circuit and power circuit of the linkage equipment are designed in detail. This paper also describes the transplant process of 渭 C/OS-II on GPL162003A, and describes the software design of intelligent MP3 playback system, including MP3 decoding module, keyboard module, LCD module, USB communication module, SD card communication module. Clock timing module, infrared remote control module software programming ideas, flow and part of the program. On the basis of the soft and hard design, the prototype is made, and a series of tests and corresponding analysis are carried out. The debugging experiment shows that the functions of the intelligent MP3 playback system designed for the large-scale exhibition can meet the design requirements. Can achieve the expected design objectives.
【学位授予单位】：西华大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TN912.2

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