【正文】 .............................................................................................................. 3 總體設(shè)計(jì)方案簡述 ..................................................................................................... 3 方案選型 ..................................................................................................................... 4 控制器選型 .............................................................................................................. 4 溫濕度傳感器選型 .................................................................................................. 4 通信模塊選型 .......................................................................................................... 5 顯示模塊選型 ........................................................................................................... 5 3 系統(tǒng)硬件部分設(shè)計(jì) ................................................................................................................ 7 單片機(jī)模塊硬件電路設(shè)計(jì) ......................................................................................... 7 STC89C52RC 單片機(jī)簡介 ....................................................................................... 7 單片機(jī)模塊最小系統(tǒng)硬件電路的設(shè)計(jì) ................................................................... 9 溫濕度檢測模塊硬件電路設(shè)計(jì) ................................................................................11 DHT11 簡介 .............................................................................................................11 DHT11 硬件電路設(shè)計(jì) .............................................................................................11 GSM 通訊模塊硬件電路設(shè)計(jì) .................................................................................. 12 GSM 開發(fā)板簡介 ................................................................................................... 12 HUAWEI_GTM900 通信模塊簡介 ....................................................................... 12 GSM 通信模塊硬件電路設(shè)計(jì) ............................................................................... 12 LCD 顯示模塊硬件電路設(shè)計(jì) ................................................................................... 13 LCD1602 簡介 ........................................................................................................ 13 LCD1602 硬件電路設(shè)計(jì) ........................................................................................ 14 按鍵與報(bào)警硬件電路設(shè)計(jì) ....................................................................................... 15 按鍵硬件電路設(shè)計(jì) ................................................................................................ 15 報(bào)警硬件電路設(shè)計(jì) ................................................................................................. 16 4 系統(tǒng)軟件設(shè)計(jì) ....................................................................................................................... 17 程序設(shè)計(jì)語言與軟件開發(fā)環(huán)境簡介 ....................................................................... 17 系統(tǒng)軟件總體設(shè)計(jì) ................................................................................................... 17 溫濕度采集模塊軟件設(shè)計(jì) ....................................................................................... 20 GSM 通訊模塊軟件設(shè)計(jì) .......................................................................................... 24 LCD1602 顯示模塊軟件設(shè)計(jì) ................................................................................... 25 鍵盤軟件設(shè)計(jì) ........................................................................................................... 28 報(bào)警軟件設(shè)計(jì) ........................................................................................................... 30 5 系統(tǒng)調(diào)試及運(yùn)行 .................................................................................................................. 32 IV 硬 件調(diào)試 .................................................................................................................... 32 運(yùn)行結(jié)果 .................................................................................................................... 32 6 結(jié)論 ...................................................................................................................................... 36 參 考 文 獻(xiàn) ............................................................................................................................ 38 致謝 .......................................................................................................................................... 39 附錄 原理圖 ............................................................................................................................ 40 常州大學(xué)本科生畢業(yè)設(shè)計(jì)（論文） 第 1 頁 共 40 頁 1 緒論 概述 我國是一個農(nóng)業(yè)大國，有幾千年的農(nóng)業(yè)文明。 關(guān)鍵詞： 大棚溫濕度檢測系統(tǒng)；單片機(jī)； GSM； II Research and Design of the temperature and humidity detection system in greenhouse based on microcontroller and GSM Abstract： With the rapid development of China39。 本系統(tǒng)通過溫濕度檢測模塊實(shí)時(shí)檢測大棚的 溫濕度，并通過 LCD1602 液晶屏顯示當(dāng)前溫濕 度。植物生長需要合適的環(huán)境，需要在一定溫度與濕度范圍內(nèi)才能正常地生長，因晝夜變化或者天氣驟變導(dǎo)致的溫濕度的 巨大變化，對植物的生長造成了不小的負(fù)面影響。而大棚無法解決由各種原因造成的溫濕度的變化，所以對大棚的溫濕度進(jìn)行檢測與控制十分關(guān)鍵。若溫濕度超過設(shè)定范圍，系統(tǒng)進(jìn)行聲光報(bào)警，同時(shí)通過 GSM 模塊將報(bào)警信息發(fā)至用戶的手機(jī)，實(shí)現(xiàn)遠(yuǎn)程報(bào)警。s agriculture and the acceleration of agricultural modernization process, greenhouse has been popularized, but it also brings new problems. Plants need right growing environment, and they can only grow normally within a certain range of temperature and humidity. Great changes in temperature and humidity due to diurnal variation or the sudden change of the weather has significant negative impact on plants. However, greenhouse can’t solve this problem which is caused by reasons. So the detection and control of temperature and humidity in the greenhouse is very important. In order to make the environment more suitable for plant in greenhouse, and improve the yield and quality of greenhouse crops, monitoring temperature and humidity of the greenhouse has bee especially important. In this artic