【正文】 ....................................................8 小結(jié) ..................................................................................................................................................................9第三章 智能家居安防系統(tǒng)硬件電路設(shè)計 .............................................................................................10 可燃?xì)怏w傳感器電路模塊 .....................................................................................................................10 MQ306A 氣體傳感器概述 ................................................................................................................10 MQ306A 測試電路 ..............................................................................................................................10 數(shù)據(jù)采集 A/D 轉(zhuǎn)換模塊 ........................................................................................................................12 ADC0809 模數(shù)轉(zhuǎn)換芯片概述 ..........................................................................................................12 ADC0809 與 AT89S52 接口電路 ...................................................................................................12 無線收發(fā)模塊 ............................................................................................................................................13 PTR8000 無線收發(fā)原理 .....................................................................................................................13 PTR8000 無線收發(fā)數(shù)傳模塊的特點及應(yīng)用 ..............................................................................13 后臺處理軟件與下位機(jī)通信接口設(shè)計 ............................................................................................14 MAX232 電平轉(zhuǎn)換芯片概述 ............................................................................................................14 DB9 的連接圖 .........................................................................................................................................14 MAX232 電平轉(zhuǎn)換電路 .....................................................................................................................15 電器控制模塊 ............................................................................................................................................16 PC817 光電耦合器概述 .....................................................................................................................16 PC817 與 AT89S52 單片機(jī)接口電路及 PC817 與繼電器接口電路 .................................16 電器控制電路原理 ................................................................................................................................17 小結(jié) ...............................................................................................................................................................18第四章 智能家居安防系統(tǒng)軟件設(shè)計 .......................................................................................................19 后臺處理軟件與下位機(jī)的分工 ...........................................................................................................19 PC 機(jī)實時顯示模塊（后臺處理軟件）軟件設(shè)計 .........................................................................19 軟件編譯環(huán)境 ........................................................................................................................................19 后臺處理軟件程序流程圖 .................................................................................................................20 程序語言選擇 ........................................................................................................................................21 后臺處理軟件程序 ...............................................................................................................................21 數(shù)據(jù)采集傳輸模塊（下位機(jī)）軟件設(shè)計 .......................................................................................21 軟件編譯環(huán)境 ........................................................................................................................................21 下位機(jī)程序流程圖 ................................................................................................................................22 程序語言選擇 ........................................................................................................................................24 數(shù)據(jù)采集無線傳輸模塊與接收程序 .............................................................................................24 電器控制模塊軟件設(shè)計 .........................................................................................................................24 電器控制模塊軟件流程圖 .................................................................................................................24 程序語言選擇 ........................................................................................................................................25 電器控制模塊程序 ...............................................................................................................................25 小結(jié) ...............................................................................................................................................................27第五章 系統(tǒng)調(diào)試 .............................................................................................................................................28 后臺處理軟件調(diào)試和下位機(jī)調(diào)試 ......................................................................................................28 聯(lián)機(jī)調(diào)試（調(diào)試實物圖見附錄三） .................................................................................................28 小結(jié) ...............................................................................................................................................................30第六章 結(jié)束語 ..................................................................................................................................................31 工作總結(jié) ......................................................................................................................................................31 本文的不足與展望 ...................................................