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1、毕业设计（论文）多点温湿度监控系统设计摘要对温湿度的监测及控制在工农业生产和日常生活中具有极其重要用。本文研究了基于分散集中控制方式的多点温湿度远程无线监控系统，较为详细地介绍了DS18B20、SHT11温湿度传感器及ZigBee技术。此可靠性高,成本低,便于扩展节点数,具有广阔的应用和推广前景。本文就具体运用方面注重介绍了以DS18B20和单片机为核心的粮仓温湿度监控系统的硬件及软件设计。以AT89C51单片机做主机，采用先进的“一线总线”传感器DS18B20进行测温、通信。该系统具有测点多，精度高，速度快，稳定
2、性好等特点,也可应用于其它相关的温度控制系统，通用性较强。该系统能对8000吨的粮仓进行300点的温湿度采集和巡回检测显示，并且自动判断温湿度是否超标，是否需要报警，一旦超标能智能判断报警位置并且根据不同情况启动不同设备。关键词：温湿度控制；DS18B20；SHT11；ZigBee；AbstractThemonitoringoftemperatureandhumidityisplayinganimportantroleinagriculturalandindustrialproductionandevery-day
3、life.ThewirelessremotemonitoringsystemofprotocolofDS18B20indetail.MultipletemperatureandhumidityandZigBeetecnologystudiedinthispaperisbasedondistributed-centralizedcontrollingmethod.Inthispaper,thesystemstructureandworkingprinciplearedescribedindetailandthedes
4、ignofrelevanthardwareandsoftwareisgiven.Thesystemrunswellinthetest,andithashighliability,lowcost,andeasynode-ex-panding,whichhasabrightprospectofapplicationandpopularization.Inthispaper,itintroducesadesignofcomputercontrolsystem,whichisbasedontheofsinglechip.“
5、1–wirebus”ofanotherdesignadoptionspreadthefeelingmachinetocaryyoncorespondenence‘shavetomeasuretoordermuch,theaccuracyishigh,thespeedisquick,thestabilitygoodence.Characteristics,alsocanbeapplyinotherrelatedtemperaturescontrolsystem,theingeneraluseisstronger.Th
6、atsystemabilitycarriesonthehumidityat300pointscollectandcruisestoreturntotheexaminationmanifestationto8000riceofthetons,andwhethertheautomaticjudgmentdegreeofhumidityexceedthelimitornot,whetherneedtobealarmed,,ifexceedthelimitcanjudgetoreporttothepolicetheposi
7、tionautomaticallyanddifferentequipmentsofdifferentcircumstancestartofbasis.Keywords:Thetemperatureandhumiditycontrolsystem;DS18B20；SHT11；ZigBee目录第1章绪论..........................................................................................................1.1课
8、题背景与研究意义..............................................................................1.2研究就对象及目的.....................................................1.3多点温湿度监控系统粮食安全方面的应用现状.......
