【正文】 適度地規(guī)模種植或農(nóng)場種植模式的需要，通過邊研究改進(jìn)邊推廣應(yīng)用。同期，中國農(nóng)科院青州煙草研究所、安徽省農(nóng)科院煙草研究所等部門在許多煙區(qū)相繼設(shè)計(jì)和推廣使用土木結(jié)構(gòu)的烤房，并結(jié)合實(shí)際對節(jié)能和自動(dòng)控制等技術(shù)進(jìn)行了研究。目前，全國使用普通標(biāo)準(zhǔn)烤房仍占95%左右。上個(gè)世紀(jì)八十年代，普遍烤房有了一定的技術(shù)規(guī)范。1960年后研究配置了自動(dòng)電子控濕烘烤系統(tǒng)，也很快投入生產(chǎn)應(yīng)用。原蘇聯(lián)及東歐部份國家采用“氣流下降式烤房”。1867～1868年火管烤煙 已有了相應(yīng)的專門設(shè)備。追溯人工加熱烘烤煙葉大約有五百多年的歷史。烘烤作業(yè)進(jìn)行的好，可以將田間所得到的優(yōu)良的性狀顯現(xiàn)出來，反之如果烘烤的不當(dāng)，優(yōu)良的性狀不能顯現(xiàn)，在整個(gè)的過程中就得不到應(yīng)有的效益，隨著我國煙葉生產(chǎn)水平的提高，煙葉烘烤過程中由于烤煙房規(guī)格和人工手動(dòng)控制溫度等因素，很難控制烤煙房內(nèi)的溫度的升降，穩(wěn)定和均勻，我國南方地區(qū)，全年及日夜溫度變化大，傳統(tǒng)的烤煙技術(shù)和人工調(diào)溫方法效率低，安全性差，效果不佳，在很大的程度上限制了看眼的額質(zhì)量。我打算做出一個(gè)利用單片機(jī)來實(shí)現(xiàn)烤房溫度的自動(dòng)控制系統(tǒng)。烘烤作業(yè)進(jìn)行得好，可以將田間所獲得的優(yōu)質(zhì)適產(chǎn)性狀顯現(xiàn)出來。本科畢業(yè)設(shè)計(jì)(論文) 題 目： 基于51單片機(jī)的煙葉烘烤溫度控制器的設(shè)計(jì) 專 題： 院 （系）： 電氣與信息工程學(xué)院 班 級： 電氣0812班 姓 名： 學(xué) 號： 指導(dǎo)教師： 教師職稱： 講師 摘 要 智能化煙葉烘烤控制是針對目前生煙葉的烘烤過程提出的，目的在于改變完全依靠人工的落后工藝，避免人為的失誤，提高烤煙質(zhì)量，目前很多烤煙房的溫度和濕度大多是人工控制的，一個(gè)專業(yè)的煙農(nóng)智能憑經(jīng)驗(yàn)日夜連續(xù)工作管理六個(gè)烤煙房，勞動(dòng)強(qiáng)度大，煙葉的質(zhì)量不穩(wěn)定。 關(guān)鍵詞 烤煙； 單片機(jī)； 數(shù)字溫度傳感器； 自動(dòng)控制； AbstractIntelligent tobacco leaf baking is controlled in response to the current raw tobacco baking process is proposed, aimed at changing pletely relying on the backward technology, avoid human errors, improve eye for quality, at present a lot of fluecured tobacco room temperature and humidity are still able to control, a professional growers intelligent experience continuous day and night work management six a fluecured tobacco room, large labor intensity, stable quality of tobacco. Effects of farmers ine has many aspects, in addition to tobacco leaf number, mainly the quality of tobacco leaves of different grade, the price differs very big, to improve the quality of tobacco main way of good varieties and tobacco science, which is the basis of fluecured tobacco cultivation, fluecured tobacco is the key, the traditional method is in fluecured tobacco room hang a thermometer and a hygrometer, farmers with experience to regulate blower switch, throttle opening, so the fluecured tobacco room temperature and humidity are difficult to control, the farmers are desperate for change in tobacco baking system, on one hand reduce the labor intensity, on the other hand the increase of tobacco quality, thereby increasing the ine.Based on the traditional tobacco drying process temperature is not easy to control, high labor intensity on temperature regulation there is lag, the control accuracy is difficult to meet the technological requirements of the situation and in tobacco baking temperature and other characteristics, using 89S51MCU as the core, the DS18B20 temperature sensor for temperature detection parameter detection unit, posed of keys and LCD display consisting of manmachine conversation unit, pleted the design of new type of tobacco drying controller, the system realizes the realtime curve according to the process requirements of fluecured tobacco of temperature acquisition and intelligent control target.Key words： Fluecured tobacco ；MCU ；Digital Thermal Sensor；automatic control目 錄第1章 概述.......................................................1 .................................................1 ...................................................1 .......................................1第2章 烤煙的流程和原理........................................... 6 ...................................................6.........................................6 .................................................6 ..............................................6第3章 具體方案設(shè)計(jì)與論證..........................................8.................................................8...................................................8.............................................9 ......................................................9 .............................................10....................................................14....................................................19..................................................21第4章 具體的電路原理圖及分析.....................................22................................................... 22 散葉堆積氣流上升式烤房氣流動(dòng)規(guī)律.............................22 散葉堆積氣流上升式烤房的特點(diǎn).................................23................................................23第5章 軟硬件設(shè)計(jì)................................................. 23................................................25....................................................27 ......................................................28................................................28...................................................29..............................................29....................................................31......................................................31第6章 設(shè)計(jì)結(jié)論..........................................................33..........................................................33第7章 實(shí)物圖......................................................34第8章 程序源代碼.................................................35致謝...............................................................39參考文獻(xiàn)...........................................................3953第1章 概述煙葉烘烤是烤煙生產(chǎn)中決定質(zhì)量優(yōu)劣的關(guān)鍵。傳統(tǒng)的烤房測溫采用玻璃式或指針式溫度計(jì)等，讀數(shù)誤差大，靈敏度低，烤房溫度的控制是靠人工完成，手段落后，煙葉質(zhì)量難以保證。C,變黃中后期與定色后期的濕球溫度不低于35度,適當(dāng)?shù)难娱L變黃期的時(shí)