電子機電論文編號:JD021    字數:15844,頁數:46

目錄
目錄 .................................................................1
第一章   緒論.........................................................1
1. 1   選題背景 ......................................................1
1．2 設計過程及工藝要求...............................................2
第二章    方案的比較和論證............................................2
2. 1溫度傳感器的選擇 .................................................3
2. 2 濕度傳感器的選擇.................................................3
2. 3 信號采集通道的選擇 ..............................................4
第三章    系統總體設計................................................5
3．1  信號采集........................................................6
3．1．1  溫度傳感器...................................................6
3. 1. 2 濕度傳感器....................................................9
3．1．3 多路開關 ....................................................12
3．2  信號分析與處理 ................................................13
3．2．1  A/D轉換 ....................................................13
3. 2. 2單片機8031 ...................................................16
3. 2. 2. 1 8031的片內結構 ...........................................17
3. 2. 2. 2 8031的引腳圖..............................................18
3. 2. 2. 3 8031程序存儲器............................................19
3. 2. 2. 4 8031數據存儲器............................................20
3. 2. 2. 5 特殊功能寄存器SFR ........................................21
3. 2. 2. 6 工作方式 .................................................22
3. 2. 3存儲器的設計 .................................................23
3. 2. 4數據存儲器的掉電保護..........................................24
3. 2. 5系統時鐘的設計 ...............................................25
3. 3 顯示與報警的設計................................................25
3. 3. 1 顯示電路 ....................................................25
3. 3. 2 報警電路 ....................................................26
第四章   軟件設計....................................................27
參考文獻 ............................................................33
附錄A 程序清單...................................................... 34