本文選題：無線 + GPRS�。� 參考：《北京郵電大學(xué)》2010年碩士論文

【摘要】： 近年來,隨著嵌入式系統(tǒng)的快速發(fā)展,越來越多的嵌入式設(shè)備被用于工業(yè)控制等領(lǐng)域。同時隨著無線通信技術(shù)的進(jìn)一步普及,嵌入式設(shè)備通過網(wǎng)絡(luò)接入局域網(wǎng)或者Internet已經(jīng)逐步成為相關(guān)應(yīng)用的趨勢。以嵌入式系統(tǒng)為平臺,依賴于無線網(wǎng)絡(luò)進(jìn)行數(shù)據(jù)傳輸,成本越來越低,通信更加可靠,在此基礎(chǔ)上開發(fā)與之對應(yīng)的一套完整的應(yīng)用系統(tǒng),用戶可以在任何一臺聯(lián)網(wǎng)的計算機(jī)上通過瀏覽器對設(shè)備進(jìn)行配置、管理、查看,因此具有重要的研究意義和應(yīng)用價值。 戶外LED信息牌作為一種全新的信息媒體,已被廣泛的應(yīng)用。本課題就是利用嵌入式系統(tǒng)結(jié)合無線通信技術(shù),采用B/S架構(gòu)和模塊化設(shè)計方法,設(shè)計了一套無線LED信息發(fā)布系統(tǒng)。目的就是實(shí)現(xiàn)LED屏的遠(yuǎn)程控制和批量控制,要讓無線監(jiān)控與數(shù)據(jù)采集系統(tǒng)的開發(fā)更方便快捷,讓復(fù)雜的功能需求變得容易實(shí)施,省去繁重的編碼任務(wù),提高系統(tǒng)穩(wěn)定性和開發(fā)效率。 本論文設(shè)計的無線LED信息發(fā)布平臺分為四部分： 1.數(shù)據(jù)傳輸單元(DTU) DTU是運(yùn)行嵌入式實(shí)時操作系統(tǒng)μC/OS-Ⅱ的設(shè)備,通過嵌入式TCP/IP協(xié)議LwIP連接到Internet,利用GSM/GPRS公共網(wǎng)絡(luò)將采集和監(jiān)控數(shù)據(jù)傳送到本地的監(jiān)控中心。 2.無線通信服務(wù)軟件(mServer) mServer是一個數(shù)據(jù)中轉(zhuǎn)站,它接收DTU發(fā)來的數(shù)據(jù),轉(zhuǎn)發(fā)給客戶端,同時接收客戶端的指令,下達(dá)給DTU。 3.數(shù)據(jù)中心客戶端(DCC) DCC和數(shù)據(jù)庫進(jìn)行通信,將DB中的任務(wù)發(fā)給mServer,同時將mServer反饋的信息放入DB。 4.WEB客戶端(WEB Client) WEB客戶端提供與用戶的交互,將任務(wù)信息通過WEB服務(wù)器存入數(shù)據(jù)庫,同時通過WEB服務(wù)器讀取數(shù)據(jù)庫中的信息并顯示。 本論文設(shè)計的無線LED信息發(fā)布系統(tǒng)是國內(nèi)首款網(wǎng)頁版無線LED屏廣告投放系統(tǒng),作者的主要工作在于設(shè)計和開發(fā)DTU上層應(yīng)用軟件、無線通信服務(wù)軟件的接口、數(shù)據(jù)中心客戶端和WEB客戶端。目前該平臺開發(fā)完成,并已大規(guī)模商用,達(dá)到了課題的目的,也論證了該平臺的研究意義和應(yīng)用價值。
[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，

本文編號：1731788