| At present,with the rapid development of domestic economy,the problem of ecological environment has become a bottleneck that restricts us to build a well-off society in an all-round way,especially the “indoor air pollution problem” has become the most urgent need to solve the air pollution problem.As the main place of our daily work and life,indoor environment quality is directly related to people's life and health,but with the rapid development of economy,the growth of population and the acceleration of urbanization,the problem of air quality decline in China has become increasingly prominent.According to the survey data of China Indoor Environment Monitoring Center,the indoor air pollution level of civil,commercial and construction sites in China is 5-10 times higher than that of outdoor air pollution.Indoor air pollution is mainly divided into three categories: physical pollution(such as dust,PM2.5),chemical pollution(such as formaldehyde or benzenes)and biological pollution(such as mold)are mainly caused by the large-scale application of new synthetic materials in modern buildings,unreasonable air distribution in kitchens and toilets,and pollution of furniture and electrical appliances emitting harmful gases,Some scholars claim that indoor air pollution is the pollution mark of the third period of human beings.The traditional way to improve the indoor air environment is mainly to open and close windows for ventilation,open or close related household appliances for air purification.This way mainly depends on personal sensory judgment,and it is completed by manual operation,so it can not meet the needs of modern smart home and convenient quality of life.In this design,We use a STM32 MCU as the main controller,which is responsible for the control of the whole system.It takes temperature and humidity sensor & air quality sensor & carbon dioxide concentration sensors as the main detection chip to detect the indoor environment.And it takes the steering gear as the motion module in order to get more comprehensive data in multiple directions,It use the display and alarm module as the prompt and call execution module to turn on or off the related household electric appliances.Firstly,This paper describes the necessity of various environmental monitoring in modern smart home life,as well as the great role of related sensors.Then a design scheme of indoor monitoring system is put forward.This system can well complete the detection of various environmental factors in indoor space and the related intelligent home appliances work of automatic control,and has many advantages compared with similar products.Secondly,This paper introduces the overall structure of the system,including the software and hardware design of each module.And burn the boot image to the PCB board and run ok.For the data transmitted by several sensors,we do further analysis and processing,and dispatch the relevant equipment to to do the corresponding operations.So as to achieve the purpose of automatically adjusting the main indoor influence factors to the best adaptive environment of human body.The results show that all the functions of the system mentioned in the paper can works normally,Its scalability is very strong and cost-effective,it can be fully applied to smart home,and it has market promotion value. |
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