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湖北文理学院毕业论文设计温度传感器的粮库温度检测系统的研究学院：物理与电子信息工程学院年级:******班学号:********姓名:********专业:电子信息工程指导老师:蔡老师二零一二年三I摘要粮仓管理中最重要的问题是监测粮堆中的温、湿度变化。国家为粮食储藏每年支付很高的费用，主要是因为监测设备成本较高，管理方式不够先进。在理论研究和实地考察实验的基础上，进行了粮食仓库温度和湿度实时在线巡回监测与控制系统的设计和研制。温度和湿度的检测与控制对防止粮食霉变有着重要的意义，讨论粮堆温度和湿度变化的主要原因以及粮食仓库中温度和湿度的允许变化范围。探讨在线测量，计算和控制粮食仓库温度和湿度的原理和方法，基本消灭了粮食霉变事故，同时也节省了大量人力和物力，减轻了粮仓管理的工作强度，提高了粮库管理效率，使粮食管理得到了安全可靠的保障。正目前,粮库中的温湿度检测,基本上是人工检测,劳动强度大,繁琐,由于检测报警不及时,造成库储粮食损失的现象时有发生,于是,设计并研制性能价格比较高的粮库温湿度自动检测系统迫在眉睫。由于大型粮库分布广、储量大，粮库的管理和监测难度大，基于粮库粮情检测系统上的计算机管理软件的设计，由每个粮仓中配置的下位机将粮情数据通过无线数传模块发送给上位机，上位机将下位机的数据以曲线和表格的形式表示出来，清晰直观地显示出各仓内温湿度状况，由上位机对粮仓进行监视，管理人员在控制室就可以看到实时粮情数据，对粮情数据进行分析，实现粮仓管理自动化、智能化。关键字：温湿度粮仓检测系统设计粮仓温湿度检测系统的设计IIABSTRACTBarnmanagementofthemostimportantissueismonitoringthegrainheaptemperatureandhumiditychanges.countriesforgrainstoragetopayhighfeeseachyear,mainlyduetohighcostofmonitoringequipment,managementmethodswerenotadvancedenoughinthetheoreticalstudyandfieldvisitsonthebasisofexperimentscarriedoutafoodstoragetemperatureandhumidity,real-timemonitoringandcontrolsystemcircuitdesignanddevelopment.thetemperatureandhumiditymeasurementandcontroltopreventmildewfoodofgreatsignificancetodiscussthegrainheapthemainreasonforthetemperatureandhumiditychangesaswellasfoodstoragetemperatureandhumidityrangeallowedexploreon-linemeasurement,calculationandcontroloffoodstoragetemperatureandhumidity,theprinciplesandmethods,andbasiceliminationoffoodmildewaccident,butalsosavealotofmanpowerandmaterialresources,therebyreducingtheintensityofgranarymanagementworktoimprovetheefficiencyofmanagementofthegranary,sothatfoodmanagementhasbeenasafeandreliableprotectionArepresent,thegraindepotsinthetemperatureandhumiditytestingisbasicallyamanualinspection,labor-intensive,cumbersome,duetonottimelydetectionandalarm,resultinginthelossoflibrarystorageoffoodphenomenahaveoccurred,sothedesignanddevelopmentofthehighercostperformancegranarytemperatureandhumidityautomaticdetectionsystemsisurgent.becauselargegranarywidelydistributed,largereservesandgrainstoragemanagementandmonitoringdifficult,basedonintelligencegraindepotdetectionsystemonthedesignofcomputermanagementsoftware,configuredbyeachgranary-bitmachineswillpayunderthecircumstancesthenumberofdataviawirelesstransmissionmodulesendstothehostcomputer,hostcomputerthenextbitplanedataintheformofcurvesandtablesthatcomeout,clearandintuitivedisplayoftemperatureandhumidityconditionswithinthewarehousebythehostcomputertothegranarytomonitor,managepersonnelinthecontrolroomcanbereal-timeintelligencedatatoseefoodonthefoodsituationanalysisofthedatatoachievegranarymanagementautomation,intelligent.KEYWORDS：humituregranarydetecingsystemdesingIII目录摘要...............................................................IABSTRACT.........................................................II目录.........................................................III第一章引言.......................................................11.1粮仓温室度检测技术的发展现状................................11.2课题的提出及研究的意义......................................31.3本文的设计思路及预期结果....................................31.3.1本文的设计思路.........................................31.3.2预期结果...............................................4第二章粮仓温湿度监测系统设计基础知识........................52.1温湿度检测技术..............................................52.1.1湿度的相关概念.........................................52.1.2湿度传感器的分类及特点.................................62.1.3温度的相关概念.........................................72.1.4温度传感器的分类及特点82.2器件及模块的选择............................................102.2.1处理器................................................102.2.2转换器................................................102.2.3温度传感器............................................112.2.4湿度传感器............................................112.2.5测控模块..............................................122.2.6显示模块..............................................122.2.7报警模块..............................................13第三章粮仓温室度检测系统的具体设计..........................153.1设计结构....................................................153.2单片机在系统中的工作的原理（过程）..........................163.3ATC0809转换器..............................................183.4热电偶温度传感器............................................19粮仓温湿度检测系统的设计IV3.4.1补偿电桥..............................................193.5湿度传感器..................................................203.6系统附带电路及元件设计.....................................213.6.1系统时钟电路设计......................................213.6.2按键与按钮的设计......................................223.6.3电源的设计............................................223.7系统软件部分................................................233.7.1显示设计..............................................233.7.2报警模块..............................................24第四章系统调试及结果分析.....................................254.1软件调试...................................................254.1.1调试方法..............................................254.1.2调试步骤..............................................254.2系统测试结果................................................264.3系统完成.....................................