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基于单片机的温湿度监控系统设计-I-摘要在日常生活中，温度和湿度常伴随在我们身旁。温度和湿度的测量范围是非常广泛的，对温度和湿度的测量系统的研究，至今也还具有着深远的意义，本次课题主要是针对国内和国外对温湿度测量系统来进行研究与分析发展的情况等，主要是分析了现在温度湿度测量系统中会存在的一些问题，以及在我们的日常生活中的重要性。所以设计了一种简单方便的，基于单片机的温湿度测量系统，这次设计要求简单、适用、稳定等。还有一个特点就是能够自动的进行检测。这次设计主要分为两个部分，一部分为硬件电路部分，一部分为软件设计部分。通过软件和硬件结合的结合，来检测温湿度，采集到的信号给单片机，通过单片机来处理采集到的信号，通过液晶屏显示，如果温度和湿度过高或过低，则会自动报警电路。温室度以单片机设计为核心，采用的传感器为DHT11,这种传感器有着智能化，使用方便、实时性强等特点。温湿度控制系统主要有以下几个电路，包括LCD显示、键盘电路、报警等几个部分组成。实现一种智能、快捷、方便的温湿度测量系统。整个系统由温湿度检测电路、LCD显示电路、键盘电路、报警电路和单片机等组成。该系统结构简单紧凑，功耗低，抗干扰能力强，总体来说性能较好，符合智能仪表小型化的趋势，为今后高性能温湿度测量仪的研制和商业化打下了良好的基础。数字化温湿度传感器，以及实现温湿度信息的在线检测已成为温湿度检测技术的一种发展趋势。关键词：单片机温湿度液晶基于单片机的温湿度监控系统设计-II-AbstractThemeasurementoftemperatureandhumidityrangeisverywide,onthetemperatureandhumiditymeasurementsystemresearchisalsoofgreatsignificance,thistopicathomeandabroadoftemperatureandhumiditymeasurementsystemresearchanddevelopment,analyzesthemainproblemsexistinginthecurrenttemperatureandhumiditymeasurementsystem,designabasedonsingle-chipmicrocomputertemperatureandhumiditymeasurementsystemforsomespecialtemperatureandhumidityrequirementsoftheoccasiontoachievelong-term,stable,real-timeandautomaticmonitoring.Thisdesignmainlyconsistsoftwoparts,circuitofhardwareandsoftwaresystemthroughthetemperatureandhumiditydetectioncircuit,thecollectedsignaltothemicrocontroller,throughthesingle-chipmicrocomputertodealwithsignalscollectedanddisplayedthroughtheLCD,iftemperatureandhumidityistoohighortoolow,thealarmwillautomaticallyalarmcircuit.STC89C52microcontrollerasthecore,theuseofDHT11integratedtemperatureandhumiditysensorstoachieveasmart,fastandconvenienttemperatureandhumiditymeasurementsystem.Thewholesystemiscomposedoftemperatureandhumiditydetectioncircuit,LCDdisplaycircuit,keyboardcircuit,alarmcircuitandsinglechipmicrocomputer.Designofthesystemstructureissimpleandcompact,lowpowerconsumption,stronganti-interferenceability,overallperformanceisbetter,inlinewiththetrendofminiaturizationofintelligentinstrument,haslaidagoodfoundationforfuturedevelopmentandcommercializationofhighperformancetemperatureandhumiditymeasuringinstrument.indirectlyaffectthebasichumanlivingconditions,butalsointheeffectofbiologicalproducts,medicineandhealth,scientificresearch,nationaldefenseconstruction.Inviewoftheabovesituation,therealizationofaccurateandreliablemeasurementoftemperatureandhumidityisparticularlyimportant.Inrecentyears,theuseofintelligentdigitaltemperatureandhumiditysensorsandtherealizationoftemperatureandhumidityinformationonlinedetectionhasbecomeadevelopmenttrendof基于单片机的温湿度监控系统设计-III-temperatureandhumiditydetectiontechnology.Keywords:Cardreader,nocontact,ICcard,SCM,89C51.Keyword:singlechipTemperatureandhumidityliquidcrystal基于单片机的温湿度监控系统设计-IV-目录基于单片机的温湿度监控................................错误!未定义书签。系统设计....................................................错误!未定义书签。摘要............................................................................................IAbstract....................................................................................II目录.........................................................................................IV前言...........................................................................................61绪论.......................................................................................71.1本文研究的意义................................................................71.2国内外发展现状................................................................71.2.1国内发展现状..............................................................71.2.2国外发展现状..............................................................82系统总体方案设计................................................................92.1设计要求.............................................................................92.2方案选择.............................................................................92.2.1传感器的选择...............................................................92.2.2单片机的选择.............................................................103系统软硬件设计..................................................................113.1软件开发平台介绍..........................................................113.2整体方案设计...................................................................123.2.1系统概述..................................................................123.2.2系统框图...................................................................123.3DHT11传感器电路...........................................................133.3.1DHT11简介..................................................................133.3.2接口说明.....................................................................143.3.3DHT11模块电路图.....................................................173.4液晶显示电路...................................................................183.4.11602液晶简介............................................................183.4.2液晶引脚说明.............................................................193.4.3指令介绍....................................................................203.5蜂鸣器模块...................................................