【正文】 , Base station, The short mess 第 I 頁 共Ⅲ頁 目 錄 1 緒論 ........................................................................................................................... 1 課題的研究背景 ................................................................................................... 1 課題的來源、研究目的和意義 ........................................................................... 2 國內(nèi)外研究現(xiàn)狀與發(fā)展趨勢 ............................................................................... 2 主要研究內(nèi)容 ....................................................................................................... 4 論文框架及章節(jié)安排 ........................................................................................... 4 2 信息監(jiān)測系統(tǒng)的整體方案及相關(guān)知識 ................................................................... 5 信息監(jiān)測系統(tǒng)組成及功能 ................................................................................... 5 信息監(jiān)測系統(tǒng)的性能指標(biāo) ................................................................................... 7 GPS 相關(guān)知識介紹 .............................................................................................. 7 GPS 概述 ............................................................................................................ 7 GPS 信號接收機 ................................................................................................ 8 GPS 定位原理 .................................................................................................... 9 GPS 數(shù)據(jù)格式 .................................................................................................. 11 GSM 相關(guān)知識介紹 ........................................................................................... 12 基站定位原理 .................................................................................................. 12 GSM 網(wǎng)絡(luò) ......................................................................................................... 15 SMS 短消息業(yè)務(wù)介紹 ..................................................................................... 17 3 信息監(jiān)測系統(tǒng)的硬件電路設(shè)計 ............................................................................. 18 硬件總結(jié)構(gòu) ......................................................................................................... 18 單片機模塊設(shè)計 ................................................................................................. 19 MSP430 單片機 ............................................................................................... 19 MSP430F149 單片機外圍電路設(shè)計 ............................................................... 20 MSP430F149 單片機供電電路設(shè)計 ............................................................... 21 GPS 模塊設(shè)計 .................................................................................................... 21 NEO5Q 模塊特性 ........................................................................................... 21 第 II 頁 共Ⅲ頁 NEO5Q 模塊外圍電路設(shè)計 ........................................................................... 23 NEO5Q 模塊供電電路設(shè)計 ........................................................................... 25 GSM 模塊設(shè)計 ................................................................................................... 25 SIM900 模塊特性 ............................................................................................ 26 SIM900 模塊的外圍電路設(shè)計 ........................................................................ 28 GSM 模塊供電電路設(shè)計 ................................................................................. 29 SIM 卡電路設(shè)計 .............................................................................................. 30 GSM 通信狀態(tài)指示電路 ................................................................................. 31 電源模塊 ............................................................................................................. 31 單片機控制模塊 ................................................................................................. 32 復(fù)位電路及 JTAG 電路 ................................................................................... 32 單片機對 GSM 模塊的控制 ............................................................................ 33 串口電路 .......................................................................................................... 34 4 信息監(jiān)測系統(tǒng)的軟件設(shè)計 ..................................................................................... 34 系統(tǒng)軟件總體設(shè)計流程 ..................................................................................... 34 看門狗程序 ......................................................................................................... 36 串口通信程序 ..................................................................................................... 37 串口初始化 ...................................................................................................... 37 串口讀取與寫入 .............................................................................................. 38 GPS 數(shù)據(jù)接收程序 ........................................................................................... 39 GPS 數(shù)據(jù)接收模塊 .......................................................................................... 39 GPS 數(shù)據(jù)格式 ................................................................................................. 40 GPS 數(shù)據(jù)信息的提取 ..................................................................................... 42 GSM 數(shù)據(jù)傳輸程序 .......................................................................................... 43 GSM/GPRS 模塊控制 ...................................................................................... 44 GSM 短信的發(fā)送 ............................................................................................ 46 5 信息監(jiān)測系統(tǒng)的防護(hù)措施 ..................................................................................... 48 6 結(jié)束語 ..................................................................................................................... 49 第 I