基于嵌入式平台的无线LED信息发布系统的设计与实现
发布时间:2018-04-10 15:28
本文选题:无线 + GPRS ; 参考:《北京邮电大学》2010年硕士论文
【摘要】: 近年来,随着嵌入式系统的快速发展,越来越多的嵌入式设备被用于工业控制等领域。同时随着无线通信技术的进一步普及,嵌入式设备通过网络接入局域网或者Internet已经逐步成为相关应用的趋势。以嵌入式系统为平台,依赖于无线网络进行数据传输,成本越来越低,通信更加可靠,在此基础上开发与之对应的一套完整的应用系统,用户可以在任何一台联网的计算机上通过浏览器对设备进行配置、管理、查看,因此具有重要的研究意义和应用价值。 户外LED信息牌作为一种全新的信息媒体,已被广泛的应用。本课题就是利用嵌入式系统结合无线通信技术,采用B/S架构和模块化设计方法,设计了一套无线LED信息发布系统。目的就是实现LED屏的远程控制和批量控制,要让无线监控与数据采集系统的开发更方便快捷,让复杂的功能需求变得容易实施,省去繁重的编码任务,提高系统稳定性和开发效率。 本论文设计的无线LED信息发布平台分为四部分: 1.数据传输单元(DTU) DTU是运行嵌入式实时操作系统μC/OS-Ⅱ的设备,通过嵌入式TCP/IP协议LwIP连接到Internet,利用GSM/GPRS公共网络将采集和监控数据传送到本地的监控中心。 2.无线通信服务软件(mServer) mServer是一个数据中转站,它接收DTU发来的数据,转发给客户端,同时接收客户端的指令,下达给DTU。 3.数据中心客户端(DCC) DCC和数据库进行通信,将DB中的任务发给mServer,同时将mServer反馈的信息放入DB。 4.WEB客户端(WEB Client) WEB客户端提供与用户的交互,将任务信息通过WEB服务器存入数据库,同时通过WEB服务器读取数据库中的信息并显示。 本论文设计的无线LED信息发布系统是国内首款网页版无线LED屏广告投放系统,作者的主要工作在于设计和开发DTU上层应用软件、无线通信服务软件的接口、数据中心客户端和WEB客户端。目前该平台开发完成,并已大规模商用,达到了课题的目的,也论证了该平台的研究意义和应用价值。
[Abstract]:In recent years, with the rapid development of embedded systems, more and more embedded devices are used in industrial control and other fields.At the same time, with the further popularization of wireless communication technology, embedded devices access LAN or Internet through the network has gradually become the trend of related applications.With embedded system as the platform, it relies on wireless network for data transmission. The cost is lower and the communication is more reliable. Based on this, a set of complete application system is developed.The user can configure, manage and view the device through browser on any computer, so it has important research significance and application value.Outdoor LED information board as a new information media, has been widely used.In this paper, a wireless LED information publishing system is designed by using embedded system and wireless communication technology, adopting B / S architecture and modularization design method.The purpose is to realize the remote control and batch control of LED screen, to make the development of wireless monitoring and data acquisition system more convenient and fast, to make complex functional requirements easy to implement, and to save heavy coding tasks.Improve system stability and development efficiency.The wireless LED information publishing platform designed in this paper is divided into four parts:1.Data transmission unit (DTU)DTU is a device running embedded real-time operating system 渭 C / OS- 鈪,
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