【正文】 ting carbon dioxide concentrations. (4) determine whether collected parameter value and set value, and relay control. Through the above can be designed for plants to grow in the process of soil humidity, environment temperature, light and co2 concentration in real time, continuous detection, display visually and automatically control. Overes the traditional continuous measurement of the shortings of manual measurement method does not, and save the workload, and avoid the unnecessary loss caused by the omission or human error. Key words： SCM temperature sensor humidity sensor carbon dioxide sensor 基于單片機(jī)的智能溫室大棚控制系統(tǒng) 長(zhǎng)春大學(xué) 1 目錄 .......................................................................................................................... 1 課題背景及研究意義 ............................................................................................... 1 國(guó)內(nèi) 外溫室控制技術(shù)發(fā)展概況 ................................................................................ 2 國(guó)外狀況 .................................................................................................................. 3 國(guó)內(nèi)狀況 .................................................................................................................. 3 選題的目的和意義 ..................................................................................................... 3 2. 溫室大棚自動(dòng)控制系統(tǒng)控制方案設(shè)計(jì) ...................................................... 5 控制方案設(shè)計(jì) .......................................................................................................... 5 系統(tǒng)硬件結(jié)構(gòu) ......................................................................................................... 6 溫室大棚的硬件組成 ................................................................................................ 7 傳感器 ................................................................................................................... 7 單片機(jī)控制系統(tǒng)和微機(jī)系統(tǒng) ..................................................................................10 溫室大棚的軟件組成 ................................................................................................ 11 單片機(jī)軟件設(shè)計(jì) .................................................................................................... 11 測(cè)試系統(tǒng)的組成及原理 ...........................................................................................13 測(cè)試系統(tǒng)的設(shè)計(jì) ..................................................................................................13 （ 1） 溫度測(cè)量電路 .......................................................................................................13 （ 2）濕度測(cè)量電路 .........................................................................................................14 （ 3） CO2 含量測(cè)量電路 ...................................................................................................15 微處理器系統(tǒng) .....................................................................................................16 程序模塊 ................................................................................................................16 主程序 ..................................................................................................................16 顯示子程序 .......................................................................................................16 A /D 轉(zhuǎn)換測(cè)量子程序 ............................................................................................17 顯示數(shù)據(jù)轉(zhuǎn)換子程序 .............................................................................................17 ..............................................................................18 系統(tǒng)設(shè)計(jì) ................................................................................................................18 系統(tǒng)組成 ..............................................................................................................18 系統(tǒng)工作原理 .....................................................................................................19 系統(tǒng)軟件設(shè)計(jì) .........................................................................................................19 上位機(jī)軟件設(shè)計(jì) ....................................................................................................19 下位機(jī)軟件設(shè)計(jì) ....................................................................................................19 誤差分析 ................................................................................................................19 可靠性設(shè)計(jì) ............................................................................................................19 硬件可靠性設(shè)計(jì) ....................................................................................................20 軟件可靠性設(shè)計(jì) ....................................................................................................20 ...................................................................................21 系統(tǒng)的總體結(jié)構(gòu)和特點(diǎn) ...........................................................................................21 基于單片機(jī)的智能溫室大棚控制系統(tǒng) 長(zhǎng)春大學(xué) 2 系統(tǒng)的總體結(jié)構(gòu) ....................................................................................................21 主要特點(diǎn) ................................................................................................................22 信號(hào)檢測(cè)的多元化 ................................................................................................22 信號(hào)檢測(cè)的連續(xù)化 ................................................................................................22 數(shù)據(jù)采集與處理的實(shí)時(shí)化 ......................................................................................22 系統(tǒng)功能的易 擴(kuò)充性 .............................................................................................22 硬件結(jié)構(gòu) ..............................................................................................