基于dht11的溫濕度監(jiān)測電路設(shè)計(jì)(已修改)
2025-01-28 12:21 本頁面
【正文】 題目：基于DHT11的溫濕度監(jiān)測電路設(shè)計(jì) 基于DHT11的溫濕度監(jiān)測電路設(shè)計(jì)摘 要 本次設(shè)計(jì)是采用MSC51系列單片機(jī)中的AT89S51和DHT11構(gòu)成的低成本的溫濕度的檢測控制系統(tǒng)。單片機(jī)AT89S51是一款低消耗、高性能的CMOS8位單片機(jī)，由于它強(qiáng)大的功能和低價(jià)位，因此在很多領(lǐng)域得到廣泛應(yīng)用。DHT11溫濕度傳感器是一款含有已校準(zhǔn)數(shù)字輸出的溫濕度復(fù)合傳感器，傳感器包括一個電阻式感濕原件和一個NTC測溫元件，該產(chǎn)品具有品質(zhì)卓越、超快響應(yīng)、抗干擾能力強(qiáng)、性價(jià)比極高等優(yōu)點(diǎn)。設(shè)計(jì)主要包括硬件電路的設(shè)計(jì)和系統(tǒng)軟件的設(shè)計(jì)。硬件電路主要包括單片機(jī)、溫濕度傳感器、顯示模塊、報(bào)警器以及控制設(shè)備等五部分。其中由DHT11溫濕度傳感器及LCD1602字符型液晶模塊構(gòu)成系統(tǒng)顯示模塊；測溫濕度控制電路由溫濕度傳感器和預(yù)設(shè)溫度值比較報(bào)警電路組成；用戶根據(jù)需要預(yù)先輸入預(yù)設(shè)值，當(dāng)實(shí)際測量的溫濕度不符合預(yù)設(shè)的溫濕度標(biāo)準(zhǔn)時，發(fā)出報(bào)警信號（蜂鳴器蜂鳴）。軟件部分包括了主程序、顯示子程序、測溫濕度子程序。 關(guān)鍵詞：AT89S51；DHT11；溫濕度監(jiān)測 DHT11 Temperature and Humidity monitoring circuit designABSTRACTAT89S51 is a low consumption, high performance CMOS8 bit of its powerful features and low price, it is used in many temperature and humidity sensor is a temperature and humidity bined sensor containing a calibrated digital output, the sensor consists of a resistor in the original sense of wet and a NTC temperature measurement product has many advantages, such as excellent quality, fast response, strong antijamming capability . This design is fromed by the AT89S51 in MSC51 Series and DHT11 constitute which is a lowcost temperature and humidity measurement and control system. The design includes the design of hardware circuit design and system software. The hardware has Five are a microcontroller, temperature and humidity sensors, display module, alarm and control equipment. The LCD1602character LCD module constitute the system display temperature and humidity control circuit by the temperature and humidity sensors and preset temperature alarm to the need of preenter the default value, when the actual measurement of the temperature humidity does not conform the preset temperature and humidity standards, send the alarm signal (buzzer will beep).The software part includes the main program, the display routines, temperature and humidity subroutine.Key words： AT89S51 ；DHT11 ；Temperature and humidity monitoring. 目 錄1 前 言 1 本文研究的背景及意義 1 研究任務(wù)和主要內(nèi)容 1 本系統(tǒng)要完成任務(wù) 1 主要內(nèi)容 12 設(shè)計(jì)任務(wù)要求分析 2 設(shè)計(jì)要求 2 系統(tǒng)組成 2 本章小結(jié) 23 硬件設(shè)計(jì) 3 單片機(jī)模塊設(shè)計(jì) 3 AT89S51單片機(jī) 3 單片機(jī)最小系統(tǒng) 4 復(fù)位電路 4 時鐘電路 5 溫濕度設(shè)置（按鍵）電路 6 顯示電路 6 傳感器電路 8 電源指示燈電路 10 系統(tǒng)的蜂鳴器電路 10 本章小結(jié) 114 軟件設(shè)計(jì) 12 溫濕度采集模塊 14 顯示模塊 15 蜂鳴器報(bào)警模塊 15 PROTUES運(yùn)行結(jié)果 16 本章小結(jié) 17結(jié)論 18參考文獻(xiàn) 19致謝 20
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