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1、青岛农业大学毕业论文(设计)题目:室内温湿度检测器的设计与实现姓名:学院:理学与信息科学学院专业:电子信息工程班级:学号:指导教师:2012年6月15日26室内温湿度检测器设计与实现电子信息工程指导教师摘要:温度、湿度和人类的生产、生活有着密切的关系,同时也是工农业生产中最常见最基本的工艺参数。随着人们生活水平的提高,人们对自己的生存环境越来越关注,而空气中温湿度的变化与人体的舒适度和情绪都有直接的关系,所以对温度、湿度的检测就非常有必要了。本设计中的温湿度检测器与传统的温湿度计相比,具有读数方便,测量范围广,测量相对准确等优点,
2、其输出温度采用数字显示,该设计配用全数字型温湿度传感器DHT11,温度测量范围0℃--50℃,湿度测量范围20%RH—95%RH,可以满足一般需要。若要求更宽测量范围,只需更换温湿度传感器型号,硬件电路及软件程序全兼容。温湿度测量响应时间快、长期稳定性好。采用先进的专用微处理器芯片STC89C52,可靠性高,抗干扰能力强。配用EEPROM芯片AT24C04,使存储的温度上限和湿度上限断电后不丢失。可以通过四个按键方便地实现温湿度上限的调整。当温度或湿度超限后,报警信号点亮相应报警灯。关键词:STC89C52单片机;温湿度检测器;L
3、CD显示26DesignandImplementationonIndoorDetectorofHumitureStudentmajoringinElectronicinformationengineeringTutorAbstract:Temperatureandhumidityisnotonlyhavingcloserelationshipwithhumanproductionandlife,butalsoplayingthemostcommonandbasicrole,asprocessparameters,inindustr
4、ialandagriculturalproduction.Withtheimprovementofpeople’slivingstandards,peopleincreasinglypayattentiontotheirownlivingenvironment.Whilechangesinairtemperatureandhumiditymadeadirectimpactonhumanfeelingsofcomfortandemotion,thedetectionoftemperatureandhumiditybecomesser
5、iouslynecessary.Thedesignoftemperatureandhumiditydetectorincomparedwiththetraditional,itstobeconvenientinreading,thetemperaturemeasuringrange,anditsdatetobeaccurate,andsoon.Thedesignshowsoutputsinadigitaldisplay.Thedesignwithall-digitaltemperatureandhumiditysensorDHT1
6、1,temperaturemeasuringrangeisbetweenzerodegreesCelsiusandfivedegreesCelsius,humiditymeasuringrangeis20%RHto95%RH,canmeetthegeneralneeds.Ifitrequiredexpandingthescopeofmeasurement,simplybychangingthemodelsoftemperatureandhumiditysensor,tomakeitshardwareelectricandtheso
7、ftwareprocedureentirelycompatible.Themeasurementofhumiturewithfastresponsetimeandlong-termstability,usedadvancedspecial-purposemicroprocessorchipSTC89C52.What’smore,ithasthecharacterofhighlyreliabilityandstronglyanti-jammingability.WithEEPROMchipAT24C04,ittomaketheupp
8、erandlowerstoragetemperatureandhumidityintheupperandlowerpermanentpreservationbesavedinthecaseofpoweroutages.Inaddition,thro