【正文】 ............................................................................................................................................................... 4 課題研究的背景及意義 ............................................................................................................................................... 4 溫度傳感器 ........................................................................................................................................................... 5 濕度傳感器 ........................................................................................................................................................... 6 本論文的設(shè)計(jì)要求及主要技術(shù)指標(biāo) ........................................................................................................................ 6 第 2 章 方案的分析比較和論證 ............................................................................................................................................ 7 溫度傳感器的簡(jiǎn)介對(duì)比與選擇 ................................................................................................................................. 7 濕度傳感器的簡(jiǎn)介對(duì)比與選擇 ................................................................................................................................. 9 控制芯片的簡(jiǎn)介對(duì)比與選擇 ...................................................................................................................................... 9 單片機(jī) ..................................................................................................................................................................10 FPGA ...................................................................................................................................................................... 11 輸出顯示設(shè)備的簡(jiǎn)介對(duì)比與選擇 ........................................................................................................................... 12 本章小結(jié) ....................................................................................................................................................................... 13 第 3 章 系統(tǒng)整體設(shè)計(jì) ...........................................................................................................................................................14 信號(hào)采集 ....................................................................................................................................................................... 15 基于單片機(jī)的溫濕度采集器的設(shè)計(jì) 2 溫度傳感器 .........................................................................................................................................................15 濕度傳感器 .........................................................................................................................................................16 信號(hào)分析 ....................................................................................................................................................................... 17 單片機(jī)的內(nèi)部結(jié)構(gòu) ............................................................................................................................................18 單片機(jī)最小系統(tǒng) ................................................................................................................................................19 RS232 串口模塊 .................................................................................................................................................20 信號(hào)處理 ....................................................................................................................................................................... 20 顯示電路 .............................................................................................................................................................21 報(bào)警模塊 .............................................................................................................................................................21 繼電器模塊 .........................................................................................................................................................22 本章小結(jié) ....................................................................................................................................................................... 22 第 4 章 軟件設(shè)計(jì) ....................................................................................................................................................................23 主程序 ............................................................................................................................................................................ 24 測(cè)溫度子程序流程圖 ................................................................................................................................................. 24 測(cè)濕度子程序流程圖 ...........................................................