【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 基于單片機的智能溫室大棚控制系統(tǒng) 長春大學 1 目錄 .......................................................................................................................... 1 課題背景及研究意義 ............................................................................................... 1 國內 外溫室控制技術發(fā)展概況 ................................................................................ 2 國外狀況 .................................................................................................................. 3 國內狀況 .................................................................................................................. 3 選題的目的和意義 ..................................................................................................... 3 2. 溫室大棚自動控制系統(tǒng)控制方案設計 ...................................................... 5 控制方案設計 .......................................................................................................... 5 系統(tǒng)硬件結構 ......................................................................................................... 6 溫室大棚的硬件組成 ................................................................................................ 7 傳感器 ................................................................................................................... 7 單片機控制系統(tǒng)和微機系統(tǒng) ..................................................................................10 溫室大棚的軟件組成 ................................................................................................ 11 單片機軟件設計 .................................................................................................... 11 測試系統(tǒng)的組成及原理 ...........................................................................................13 測試系統(tǒng)的設計 ..................................................................................................13 （ 1） 溫度測量電路 .......................................................................................................13 （ 2）濕度測量電路 .........................................................................................................14 （ 3） CO2 含量測量電路 ...................................................................................................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 轉換測量子程序 ............................................................................................17 顯示數據轉換子程序 .............................................................................................17 ..............................................................................18 系統(tǒng)設計 ................................................................................................................18 系統(tǒng)組成 ..............................................................................................................18 系統(tǒng)工作原理 .....................................................................................................19 系統(tǒng)軟件設計 .........................................................................................................19 上位機軟件設計 ....................................................................................................19 下位機軟件設計 ....................................................................................................19 誤差分析 ................................................................................................................19 可靠性設計 ............................................................................................................19 硬件可靠性設計 ....................................................................................................20 軟件可靠性設計 ....................................................................................................20 ...................................................................................21 系統(tǒng)的總體結構和特點 ...........................................................................................21 基于單片機的智能溫室大棚控制系統(tǒng) 長春大學 2 系統(tǒng)的總體結構 ....................................................................................................21 主要特點 ................................................................................................................22 信號檢測的多元化 ................................................................................................22 信號檢測的連續(xù)化 ................................................................................................22 數據采集與處理的實時化 ......................................................................................22 系統(tǒng)功能的易 擴充性 .............................................................................................22 硬件結構 ..............................................................................................