基于51单片机的粮仓温湿度检测系统毕业设计.doc

基于51单片机的粮仓温湿度检测系统[摘要]粮仓温度湿度监测控制系统是基于STC12C52A60S2的数据采集、对比、控制的系统。以STC12C52A60S2单片机为控制器，对温度传感器DS18B20传送的数字量信号和对湿度传感器HR202传送的模拟量信号进行采集和处理，当前值和设定温度上限值进行对比，进而执行控制作用，通过对继电器的控制进而控制设备的启停，对粮仓温度湿度进行调节，使其维持在适当范围，维护粮仓正常运行。[关键词]单片机、温湿度、检测、控制Abstract:Thegranary’stemperatureandhumiditycontrolanddetectsystemisbasedonthemicrocontrolunitofSTC12C5A60S2,thesystemisusedfordateacquisition,comparison,andcontrol.Inthissystem,STC12C5A60S2isthecontroller,thecontrollerisdesignedtodealwithtemperatureandhumiditysignalfromthetemperaturesensorandhumiditysensor.Thencomparethesedatawithlimitsthevalueoftemperatureandhumidity.Ifthedateisoutoflimits,thenthecontrollersendacontrolsignaltowarnpeople,besides,thecontrollerwillmakethefanrunningtomakethetemperatureandhumiditylower.Inthisway,thegranarycanbeworkingatusualstatus.Keywords:MCU、temperatureandhumidity、control目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc326417223"第一章绪论PAGEREF_Toc326417223\h1HYPERLINK\l"_Toc326417224"1.2相关领域国内外应用的现状及发展趋势PAGEREF_Toc326417224\h1HYPERLINK\l"_Toc326417225"1.3粮仓温湿度检测控制系统原理PAGEREF_Toc326417225\h2HYPERLINK\l"_Toc326417226"1.4本章小结PAGEREF_Toc326417226\h2HYPERLINK\l"_Toc326417227"第二章：系统分析、设计要求及模块选择PAGEREF_Toc326417227\h3HYPERLINK\l"_Toc326417228"2.1设计要求PAGEREF_Toc326417228\h3HYPERLINK\l"_Toc326417229"2.2单片机型号的选择PAGEREF_Toc326417229\h3HYPERLINK\l"_Toc326417230"2.21采用STC89C52单片机PAGEREF_Toc326417230\h3HYPERLINK\l"_Toc326417231"2.22采用STC12C5A60S2单片机PAGEREF_Toc326417231\h3HYPERLINK\l"_Toc326417232"2.3显示系统模块的选择PAGEREF_Toc326417232\h3HYPERLINK\l"_Toc326417233"2.31采用LED数码管显示PAGEREF_Toc326417233\h3HYPERLINK\l"_Toc326417234"2.32采用1602液晶显示PAGEREF_Toc326417234\h3HYPERLINK\l"_Toc326417235"2.4测温模块的选择PAGEREF_Toc32641