基于单片机的环境监测系统

AbstractIn the 21st century,the explosive development of science and technologyhas brought about a significant increase in productivity.People's livingenvironment seems to have changed overnight.New factories and tall buildingshave greatly changed people's production,working and livingenvironment.Therefore,whether the two indexes of temperature and humidityare in a proper range in the relatively closed indoor environment is particularlyimportant for production and life.Suitable temperature and humidity givepeople a comfortable living environment,suitable for the protection ofindustrial production under the temperature and humidity.Traditionaltemperature and humidity detection relies on human inspection,relying onsimple temperature and humidity detection instruments,which istime-consuming and laborious,and can not avoid the inadvertent wrongoperation of the detector.The traditional detection cost is high,and the wrongdetection results are very serious consequences for modern industrialproduction.In conclusion,an efficient,accurate and low-cost detection deviceis needed.At this time,the environment detection system based on single-chipmicrocomputer is born.The advantages of the system are simple,low cost,highmeasurement accuracy,small size and usable range.It is suitable for home life,industrial production and other scenes.In this project,STM32 single-chip microcomputer,sensor DH11,alarmmodule,threshold setting module and necessary circuits are used to constitutethe environmental inspection system based on single-chip microcomputer.Thesystem always obtains the ambient temperature and humidity data,and gives analarm when it exceeds the set temperature and humidity data.Key words:temperature and humidity monitoring dth11 STM32 LCD1602