【正文】 摘要 隨著嵌入式應(yīng)用技術(shù)和無線網(wǎng)絡(luò)技術(shù)的快速發(fā)展，結(jié)合了 GPS 定位技術(shù)和 GPRS無線通信技術(shù)的嵌入式 GPS 車載監(jiān)控系統(tǒng)應(yīng)運(yùn)而生。論文將 USB 視頻采集技術(shù)引入到車載終端監(jiān)控系統(tǒng)中，提出了一種車載監(jiān)控和圖像傳輸系統(tǒng)的具體實(shí)現(xiàn)方案。然后是對(duì)車載監(jiān)控終端硬件方案的設(shè)計(jì)與實(shí)現(xiàn) ,給出了具體的實(shí)現(xiàn)框圖。 為減少 GPRS 網(wǎng)絡(luò)傳輸?shù)臄?shù)據(jù)量，在圖像采集模塊中采用了 JPEG 軟件壓縮編碼技術(shù)，對(duì)靜態(tài)圖像進(jìn)行壓縮編碼，較大地節(jié)省了網(wǎng)絡(luò)資源，提高了圖片的傳輸速度。 基于 GPS/GPRS 的車載圖像監(jiān)控終端最終可以實(shí)現(xiàn) GPS 定位數(shù)據(jù)和圖像數(shù)據(jù)的采集與上傳功能。 關(guān)鍵詞： GPS 定位技術(shù)， GPRS 通信技術(shù)， 車載監(jiān)控終端，圖像采集 本科畢業(yè) 論文 (設(shè)計(jì) ) 2 Carries the image monitor terminal based on The GPS/GPRS vehicle the design Author: Li Baohai Tutor: Zhao Yanjie ABSTRACT With the rapid development of the embeddedapplications and wireless work technology, the embedded vehicle monitoring system which bines the GPS location technology and GPRS wireless munication technology es into being . In order to meet the requirement, the paper introduces USB video capture technology into embedded vehicle monitoring terminal and puts forward a new solution. Firstly, the paper describes the GPS technology, GPRS wireless work technology and USB interface technology in detail .Secondly, the paper explains how to carry out the hardware design. Give a specific realization of block diagram. The last introduce the main control module S3C2410X processor, GPS module and GPRS munication module used in the system. In order to reduce the quantity of data transmitted by the GPRS work, JPEG pression technology was used to press static image in the image acquisition module, which could economize the work resources and speed up the image transmission. Finally, the paper summaries all the works and gives the methods for further improvement. The embedded vehicle image monitoring terminal which uses GPS/GPRS technology could collect the GPS and picture information about the automobile and send it to the monitoring center .Making use of the information, monitoring center strengthens its supervision ability to track automobile, The design makes full use of resources on ARM S3C2410X processor and implements vehicle monitoring functions at a lowcost but more conveniently. Keywords： GPS positioning technology, GPRS munications technology, vehicle monitoring devices, image acquisition 本科畢業(yè) 論文 (設(shè)計(jì) ) 3 目 錄 第一章 緒論 .............................................................................................................................................................................. 1 課題研究的背景及意義 ...............................................................................................................................................1 汽車監(jiān)控的國內(nèi)外現(xiàn)狀 ...............................................................................................................................................2 課題研究的目的 ............................................................................................................................................................2 第二章 GPS、 GPRS及 USB接口技術(shù)及原理 ................................................................................................................... 4 GPS 導(dǎo)航技術(shù) .................................................................................................................................................................4 GPS 系統(tǒng)組成 ........................................................................................................................................................ 4 GPS 定位原理 ........................................................................................................................................................ 6 GPRS 網(wǎng)絡(luò)技術(shù) ...........................................................................................................................................................7 GPRS 網(wǎng)絡(luò)技術(shù)特點(diǎn) ......................................................................................................................................... 8 GPRS 系統(tǒng)構(gòu)成 .................................................................................................................................................. 8 GPRS 技術(shù)在遠(yuǎn)程監(jiān)控系統(tǒng)中的應(yīng)用 ........................................................................................................... 10 USB 接口技術(shù) ..............................................................................................................................................................10 USB 簡介 ............................................................................................................................................................... 10 USB 的基本特點(diǎn) ................................................................................................................................................. 11 第三章 系統(tǒng)總體設(shè)計(jì)方案 ................................................................................................................................................. 12 系統(tǒng)工作原理及需求 ..................................................................................................................................................12 車載監(jiān)控終端硬件設(shè)計(jì)方案 ....................................................................................................................................13 第四章 系統(tǒng)硬件平臺(tái)構(gòu)成 ................................................................................................................................................. 15 主控制模塊 (ARM9) ....................................................................................................................................................16 USB 接口 ............................................................................................................................................................... 17 UART 接口 ............................................................................................................................................................ 18 通用 I/O 口 .......................................................................................................................................