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1、中原工學院信息商務學院畢業(yè)論文(設計)I摘要傳統(tǒng)的水位控制在生產中一直占有主導地位,但隨著生產線的更新,不僅要求有更直觀、準確、穩(wěn)定的水位控制系統(tǒng),同時還要求在降低生產設備的成本方面要求更新自動化程度和性價比高的水位控制系統(tǒng)。單片機控制系統(tǒng)以其控制精度高、性能穩(wěn)定可靠、設置操作方便、造價低等特點被應用到水位系統(tǒng)的控制中。本系統(tǒng)采用單片機AT89C51為控制核心來實現(xiàn)水位的基本控制功能。系統(tǒng)由鍵盤、數(shù)碼顯示、AD轉換、傳感器、電源和控制部
2、分組成。本文以單片機端口的輸出電平控制繼電器的動作,實現(xiàn)電機的啟動或者停止,從而達到自動控制水位的目的。另外,系統(tǒng)可根據(jù)需要設定水位控制的高度,同時具備超限報警和故障報警功能,并輔以發(fā)光二極管顯示相應水位的狀態(tài)。關鍵字:關鍵字:AT89C51,AD轉換,水位控制,數(shù)碼顯示,傳感器,故障報警中原工學院信息商務學院畢業(yè)論文(設計)III目錄1引言................................................
3、.............................................................................12系統(tǒng)設計方案比較說明.............................................................................................33水位控制系統(tǒng)的原理和設計方案......................
4、.......................................................43.1水位控制系統(tǒng)組成..............................................................................................43.2單片機系統(tǒng)組成及工作原理...........................................
5、...................................43.2.1系統(tǒng)組成.......................................................................................................43.2.2工作原理..............................................................
6、.........................................53.3控制方案的設計..................................................................................................53.3.1設計思路............................................................
7、...........................................53.3.2方案設計.......................................................................................................64硬件設計..........................................................
8、...........................................................84.1單片機..................................................................................................................84.2時鐘電路................................
9、..............................................................................94.3電源電路............................................................................................................114.4傳感器..................
10、..............................................................................................114.5串行通信............................................................................................................124.6鍵盤電路
11、............................................................................................................134.7水位顯示電路....................................................................................................1
12、34.8AD轉換電路....................................................................................................144.8.1ADC0809的內部邏輯結構........................................................................144.8.2ADC0809的引腳
13、圖....................................................................................144.8.3AD轉換電路原理圖.................................................................................164.9電機控制.............................
14、...............................................................................184.10看門狗電路......................................................................................................184.11穩(wěn)壓電路..................
15、........................................................................................204.12報警電路..........................................................................................................215軟件設計.........
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