【正文】 學(xué)號： 10417227 常 州 大 學(xué) 畢業(yè)設(shè)計（論文） （ 20xx 屆） 題 目 基于單片機和 GSM 的大棚溫濕度檢測系統(tǒng)的研究與設(shè)計 學(xué) 生 楊達 學(xué) 院 信息科學(xué)與工程學(xué)院 專 業(yè)班級 自動化 102 校內(nèi)指導(dǎo)教師 王雪 專業(yè)技術(shù)職務(wù) 講師 校外指導(dǎo)老師 專業(yè)技術(shù)職務(wù) 二 ○ 一四 年 五 月I 基于單片機和 GSM 的大棚溫濕度檢測系統(tǒng)的研究與設(shè)計 摘 要 ： 隨著我國農(nóng)業(yè)的迅速發(fā)展與農(nóng)業(yè)現(xiàn)代化進程的逐步加快，大棚的應(yīng)用也逐漸普及，然而這也帶來了新的問題。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行檢測與控制十分關(guān)鍵。因此為了讓大棚環(huán)境更適合植物的生長，提高大棚作物的產(chǎn)量和質(zhì)量，對大棚的溫濕度的監(jiān)測變得尤為重要。 本文 設(shè)計的基于單片機和 GSM 的大棚 溫濕度檢測系統(tǒng)，以 STC89C52RC 單片機為控制器 ，以數(shù)字式溫濕度傳感器 DHT11 作為溫濕度檢測模塊，與華為 GSM 通信模塊有機結(jié)合，構(gòu)成一個溫濕度實時檢測報警系統(tǒng)。 本系統(tǒng)通過溫濕度檢測模塊實時檢測大棚的 溫濕度，并通過 LCD1602 液晶屏顯示當(dāng)前溫濕 度。若溫濕度超過設(shè)定范圍，系統(tǒng)進行聲光報警，同時通過 GSM 模塊將報警信息發(fā)至用戶的手機，實現(xiàn)遠程報警。本文通過四個獨立按鍵實現(xiàn)溫濕度的閾值設(shè)置等功能。本文為我國溫室大棚自動控制系統(tǒng)的研究與開發(fā)打下了良好的基礎(chǔ)。 關(guān)鍵詞： 大棚溫濕度檢測系統(tǒng)；單片機； 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。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 article, the design of temperature and humidity detection system in greenhouse is based on MCU and GSM , using STC89C52RC as controller, take digital temperature and humidity sensor called DHT11 as a temperature and humidity detection module, and then bined with Huawei GSM munication module, a temperature and humidity real time detection system with warning function is constituted. The system can detect the temperature and humidity temperature with humidity detection module, and display the current temperature and humidity through the LCD1602 LCD screen. If the temperature exceeds the set range, sound light alarm system will alarm. At the same time, alarm information is sent to the person in charge through the GSM module. In this design, the threshold value of temperature and humidity will be set by four independent buttons. This passage has laid a good foundation for the research and development of the automatic control system of greenhouse in China. Key words： Greenhouse temperature and humidity detection system。 MCU。 GSM。 III 目 錄 摘 要 ......................................................................................................................................... I 目 錄 .......................................................................................................................................III 1 緒論 ........................................................................................................................................ 1 概述 ............................................................................................................................. 1 課題的國內(nèi)外研究現(xiàn)狀與發(fā)展趨勢 ......................................................................... 1 國外發(fā)展情況與發(fā)展趨勢 ...................................................................................... 1 國內(nèi)發(fā)展情況與發(fā)展趨勢 ...................................................................................... 2 本文主要研究內(nèi)容 ..................................................................................................... 2 2 系統(tǒng)的總體方案 .................................................................................................................... 3 功能概述 ..................................................................................................................... 3 總體設(shè)計方案簡述 ..................................................................................................... 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 ................................................................................................................ 7 單片機模塊硬件電路設(shè)計 ......................................................................................... 7 STC89C52RC 單片機簡介 ....................................................................................... 7 單片機模塊最小系統(tǒng)硬件電路的設(shè)計 ................................................................... 9 溫濕度檢測模塊硬件電路設(shè)計 ................................................................................11 DHT11 簡介 .............................................................................................................11 DHT11 硬件電路設(shè)計 .............................................................................................11 GSM 通訊模塊硬件電路設(shè)計 ..................................