Design And Implementation Of Indoor Air Quality Monitor Based On STM32

Nowadays,about 80% of people’s time is spent indoors.The work and life quality is related closely to our indoor air quality.Thus higher requirement has been proposed on the air quality of living environment.In view of haze,indoor decoration and other pollution problems,there is still no effective way to control harmful substances in the air,which becomes health risk in our dairy life.Therefore,indoor air quality detection is particularly important.When the concentration of indoor harmful gas exceeds the national standard,it will do negligible impact on people’s physical and mental health.In order to get the indoor hazardous gas concentration accurately in time,effective measures are taken to improve air quality in the workspace and living room.According to the indoor air supervision standard GB50325-2010,a portable low power indoor air quality detector based on STM32F103C8T6 microcontroller designed in this paper.This instrument can measure the indoor real-time temperature,humidity,formaldehyde concentration and PM2.5 concentration,and the measured value can be displayed on the LCD12864,When the concentration of formaldehyde or the PM2.5concentration exceeds the alarm value,the tester will warn the user that the indoor harmful gas exceeds the standard by means of red light and buzzer.The indoor air quality detector can send the measured data to the mobile terminal by short messages according to the user’s needs.Finally,the system uses the C# language to develop the host computer on the Visual Studio 2012,which can display each real-time the air quality index in real time.The result shows that the indoor air quality detector designed in this paper can detect indoor air quality accurately,and provide effective guarantee for people’s healthy living environment.