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1、中原工學(xué)院信息商務(wù)學(xué)院畢業(yè)論文(設(shè)計(jì))I摘要傳統(tǒng)的水位控制在生產(chǎn)中一直占有主導(dǎo)地位,但隨著生產(chǎn)線的更新,不僅要求有更直觀、準(zhǔn)確、穩(wěn)定的水位控制系統(tǒng),同時(shí)還要求在降低生產(chǎn)設(shè)備的成本方面要求更新自動(dòng)化程度和性價(jià)比高的水位控制系統(tǒng)。單片機(jī)控制系統(tǒng)以其控制精度高、性能穩(wěn)定可靠、設(shè)置操作方便、造價(jià)低等特點(diǎn)被應(yīng)用到水位系統(tǒng)的控制中。本系統(tǒng)采用單片機(jī)AT89C51為控制核心來(lái)實(shí)現(xiàn)水位的基本控制功能。系統(tǒng)由鍵盤(pán)、數(shù)碼顯示、AD轉(zhuǎn)換、傳感器、電源和控制部
2、分組成。本文以單片機(jī)端口的輸出電平控制繼電器的動(dòng)作,實(shí)現(xiàn)電機(jī)的啟動(dòng)或者停止,從而達(dá)到自動(dòng)控制水位的目的。另外,系統(tǒng)可根據(jù)需要設(shè)定水位控制的高度,同時(shí)具備超限報(bào)警和故障報(bào)警功能,并輔以發(fā)光二極管顯示相應(yīng)水位的狀態(tài)。關(guān)鍵字:關(guān)鍵字:AT89C51,AD轉(zhuǎn)換,水位控制,數(shù)碼顯示,傳感器,故障報(bào)警中原工學(xué)院信息商務(wù)學(xué)院畢業(yè)論文(設(shè)計(jì))III目錄1引言................................................
3、.............................................................................12系統(tǒng)設(shè)計(jì)方案比較說(shuō)明.............................................................................................33水位控制系統(tǒng)的原理和設(shè)計(jì)方案......................
4、.......................................................43.1水位控制系統(tǒng)組成..............................................................................................43.2單片機(jī)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(shè)計(jì)..................................................................................................53.3.1設(shè)計(jì)思路............................................................
7、...........................................53.3.2方案設(shè)計(jì).......................................................................................................64硬件設(shè)計(jì)..........................................................
8、...........................................................84.1單片機(jī)..................................................................................................................84.2時(shí)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(pán)電路
11、............................................................................................................134.7水位顯示電路....................................................................................................1
12、34.8AD轉(zhuǎn)換電路....................................................................................................144.8.1ADC0809的內(nèi)部邏輯結(jié)構(gòu)........................................................................144.8.2ADC0809的引腳
13、圖....................................................................................144.8.3AD轉(zhuǎn)換電路原理圖.................................................................................164.9電機(jī)控制.............................
14、...............................................................................184.10看門(mén)狗電路......................................................................................................184.11穩(wěn)壓電路..................
15、........................................................................................204.12報(bào)警電路..........................................................................................................215軟件設(shè)計(jì).........
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