智能温室大棚温湿度检测系统设计

吉林化工学院毕业设计说明书智能温室大棚温湿度检测系统设计DesignofIntelligentGreenhouseTemperatureandHumidityDetectionSystem学生学号：10510209学生姓名：过旭峰专业班级：自动1002指导教师：付秀伟职称：助教起止日期：2014.02.24～2014.06.15吉林化工学院JilinInstituteofChemicalTechnology吉林化工学院毕业设计说明书-I-摘要随着人们的生活及其生产水平的不断提高，对生活环境和生产环境的要求就显的尤为重要，温湿度的控制就是一个典型的例子，因此温湿度检测系统就是现代生产生活中应运而生的一种智能、快捷、方便可靠的检测系统。温室大棚是现代化农业生产的重要手段，利用现代技术实现生产过程和管理的自动化控制，可节约大量的人力物力成本，是提高生产力和生产效率的有力保障。多参数测控的温室智能化控制设备，经济成本较高，影响了推广使用，因此选择温湿度作为控制对象。本温度控制系统湿度检测精度范围是±2％RH，温度检测精度范围是±0.4℃(25℃)，能手动设置温湿度的上限和下限。温室大棚控制系统包括硬件电路设计和软件设计两部分。硬件电路设计包括温湿度检测电路、时钟电路、LCD显示电路、报警电路、温湿度控制电路等。主控芯片选用AT89S52芯片；温度检测器件选用温湿度传感器AM2303；时钟芯片选用DSl302；LCD模块选用自带中文字库的HGl286401C。软件部分采用模块化程序设计，通过C语言开发了程序软件。该智能温室大棚温湿度控制系统外围电路简单，精度好，可靠性高。关键词：AT89S52单片机；温湿度传感器AM2303；时钟芯片DS1302；温湿度控制智能温室大棚温湿度检测系统设计-II-AbstractWiththecontinuousimprovementofpeople'slifeandproductionlevel,Therequirementtothelivingenvironmentandproductionenvironmentisthesignificantparticularlyimportant,temperatureandhumiditycontrolisatypicalexample,soanintelligent,sothetemperatureandhumiditydetectionsystemisanintelligenthaveemergedinthemodernproductionandliving,quick,convenientandreliabledetectionsystem.Greenhousesisanimportantmeansofmodernagriculturalproduction,usemoderntechnologytorealizeautomationcontrolofproductionprocessandmanagement,cansavealotofmanpowercost,istoimprovetheproductivityandefficiency.Manyparametersmeasurementandcontrolofgreenhouseintelligentcontrolequipment,economiccostishigher,affectthepromotionuse,thereforetemperatureandhumidityischosenasthecontrolobject.Thistemperaturecontrolsystemofhumiditydetectionaccuracyrangeis±2%RH,temperatureaccuracyrangeis±0.4℃(25℃),canbemanuallysettheupperandlowerlimitsoftemperatureandhumidity.Greenhousecontrolsystemincludinghardwarecircuitdesignandsoftwaredesigntwoparts.Thehardwarecircuitdesignincludingthetemperatureandhumiditydetectioncircuit,clockcircuit,LCDdisplaycircuit,alarmcircuit,temperatureandhumiditycontrolcircuit,etc.ThemaincontrolchipAT89S52chip.TemperaturedetectiondevicechooseAM2303oftemperatureandhumidity.TheclockchipchooseDSl302.TochooseowncharacterHGl286401CLCDmodule.Softwarepartadoptsmodularizedprogramdesign,throughtheClanguagedevelopedaprogramsoftware.Theperipheralcircuitoftheintelligentgreenhousetemperatureandhumiditycontrolsystemissimple,goodaccuracyandhighreliability.KeyWords：AT89S52singlechipmicrocomputer；TemperatureandhumiditysensorAM2303；TheclockchipDS1302；Temperatureandhumiditycontrol吉林化工学院毕业设计说明书-III-目录摘要········································································································IAbstract········································································································II第1章绪论···································································································11.1课题的研究背景···················································································11.2温湿度传感器国内外研究······································································11.3论文的主要内容及研究意义···································································21.3.1主要内容····················································································21.3.2本课题研究的意义·······································································3第2章系统总体方案设计················································································42.1温室大棚内主要环境参数的控制与调节····················································42.1.1温度参数的控制与调节·································································42.1.2湿度参数的控制调节····································································42.1.3温度湿度之间的耦合控制与调节·····················································52.2系统设计工作流程················································································52.3主要元件的选择···················································································62.3.1温度传感器的选择········································································62.3.2控制器的选择··············································································7第3章系统硬件电路设计···············································································93.1单片机模块简介···················································································93.2温湿度采集模块·················································································113.2.1温湿度传感器AM2303介绍························································113.2.2AM2303的引脚分配及说明··························································113.2.3传感器的性能···········································································133.2.4AM2303通讯时序······································································143.3数据显示模块····················································································163.3.1HG1286401C液晶中文显示模块概述·············································163.3.2模块接口说明···········································································163.3.3模块主要硬件构成说明·······························································173.3.4LCD模块与单片机的连接电路······················································183.4继电器控制模块················