【正文】 ....................................................... I Abstract ................................................................................................................................... II 目 錄 ......................................................................................................................................III 第 1 章 緒論 ........................................................................................................................... 1 課題的背景 .............................................................................................................. 1 課題的研究現(xiàn)狀 ...................................................................................................... 1 課題在國(guó)外的研究現(xiàn)狀 ............................................................................... 1 課題在國(guó)內(nèi)的研究現(xiàn)狀 ................................................................................ 2 課題研究的意義 ...................................................................................................... 2 設(shè)計(jì)的主要任務(wù) ...................................................................................................... 2 第 2 章 系統(tǒng)方案的提出 ....................................................................................................... 4 系統(tǒng) 設(shè)計(jì)思想 ........................................................................................................... 4 系統(tǒng)方案概述 ........................................................................................................... 4 系統(tǒng)方案框圖 .......................................................................................................... 4 系統(tǒng) 模塊化設(shè)計(jì) ...................................................................................................... 5 第 3 章 硬件電路 ................................................................................................................... 6 硬件電路概述 .......................................................................................................... 6 STC12C5A60S2 單片機(jī) ........................................................................................... 6 STC12C5A60S2 的簡(jiǎn)介 ................................................................................ 6 STC12C5A60S2 引腳說(shuō)明 ............................................................................ 7 STC12C5A60S2 在本系統(tǒng)中的具體應(yīng)用 .................................................... 8 非接觸式 IC 卡 — Mifare One 卡 ............................................................................ 9 Mifare One 卡的結(jié)構(gòu) .................................................................................... 9 Mifare One 卡的 功能 .................................................................................... 9 RFID 讀寫器 ........................................................................................................... 10 MFRC522 的特點(diǎn) ........................................................................................ 10 讀寫器的結(jié)構(gòu) ............................................................................................. 10 讀卡器 的工作過(guò)程 ......................................................................................11 溫 濕度傳感器 DHT11 ........................................................................................... 12 DHT11 的特點(diǎn) ............................................................................................. 12 DHT11 的典型應(yīng)用 ..................................................................................... 12 DHT11 的工作過(guò)程 ..................................................................................... 13 IV 氣體傳感器 MQ2 ................................................................................................. 13 MQ2 特點(diǎn) ................................................................................................... 13 MQ2 典型應(yīng)用電路 ................................................................................... 14 GSM 模塊 ............................................................................................................... 14 GSM 模塊簡(jiǎn)介 ............................................................................................ 14 TC35 ............................................................................................................. 14 AT 指令 ........................................................................................................ 15 電機(jī)驅(qū)動(dòng)模塊 ........................................................................................................ 15 L298N 的特點(diǎn) .............................................................................................. 15 L298N 的控制直流電機(jī) .............................................................................. 16 多路循跡模塊 ........................................................................................................ 16 循跡原理 ..................................................................................................... 16 多路循跡模塊 ...................................................................................................... 17 光電開(kāi)關(guān) ................................................................................................... 17 第 4 章 系統(tǒng)調(diào)試 ................................................................................................................. 18 硬件電路調(diào)試 ........................................................................................................ 18 電路調(diào)試步驟 ............................................................................................. 18 調(diào)試數(shù)據(jù)記錄 ............................................................................................. 19 代碼調(diào)試 ................................................................................................................. 19 系統(tǒng)綜合調(diào)試 ........................................................................................................ 19 小車平臺(tái)調(diào)試 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