基于51单片机的粮仓温湿度检测系统毕业设计.pdf

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’stemperatureandhumiditycontrolanddetectsystem
isbasedonthemicrocontrolunitofSTC12C5A60S2,thesystemisusedfor
dateacquisition,comparison,andcontrol.Inthissystem,STC12C5A60S2is
thecontroller,thecontrollerisdesignedtodealwithtemperatureand
humiditysignalfromthetemperaturesensorandhumiditysensor.Then
comparethesedatawithlimitsthevalueoftemperatureandhumidity.If
thedateisoutoflimits,thenthecontrollersendacontrolsignalto
warnpeople,besides,thecontrollerwillmakethefanrunningtomakethe
temperatureandhumiditylower.Inthisway,thegranarycanbeworkingat
usualstatus.
Keywords:MCU、temperatureandhumidity、control

目录

第一章绪论................................................................1
1.2相关领域国内外应用的现状及发展趋势...................................1
1.3粮仓温湿度检测控制系统原理..........................................2
1.4本章小结.............................................................2
第二章：系统分析、设计要求及模块选择.........................................3
2.1设计要求............................................................3
2.2单片机型号的选择....................................................3
2.21采用STC89C52单片机............................................3
2.22采用STC12C5A60S2单片机........................................3
2.3显示系统模块的选择..................................................3
2.31采用LED数码管显示..............................................3
2.32采用1602液晶显示...............................................3
2.4测温模块的选择......................................................4
2.41采用模拟量温度传感器...........................................4
2．42采用数字量温度传感器.........................................4
2.5测湿模块的选择......................................................4
2.6控制模块的选择......................................................4
2.7通讯模块的选择.........................................