Intelligent Home Air Quality Detection System Based On ARM

In the period of rapid development of the economy in our country, polluting energy consumption of huge pollution to the environment is more and more serious. Because of the high concentration of PM2.5in the air in many big cities, and housing decoration, pesticides, toluene, formaldehyde and carbon dioxide, natural gas, liquefied petroleum gas (LPG) with the harmful gas, such as the effects on the people healthy body cannot be ignored. With the improvement of living standards, people on indoor environmental air quality put forward higher requirements. In order to be able to real-time detection of air quality of indoor environment, improve the living environment, family needs to indoor PM2.5and other harmful gases in the air for effective monitoring, so as to take effective prevention and improvement measures. In view of the present indoor air monitoring products on the market price is very expensive, the function is not perfect and the specificity of weak situation, based on the intelligent household air quality monitoring as the breakthrough point, research and design of an intelligent air quality detection system.In this paper, we study and design of air quality monitoring system to STM32F107as an embedded microprocessor hardware platform, operating system USES is u C/OS-III embedded real-time operating system, developed based on the application of the system, the successful implementation of the temperature, humidity, real-time monitoring PM2.5, methane, ammonia, etc. When over the limit alarm and can communicate with mobile phone in time, timely notify the owner in the house. On the structure, this paper first introduces the indoor air quality index and testing system of requirement analysis, the air quality monitoring system is presented, the hardware overall plan; ZigBee technology, Then detailed introduces the working principle of the sensor used in this paper, as well as the performance index of the sensor, and the sensor drive circuit, power supply voltage conversion circuit, LCD power supply circuit, Wireless transmission interface design, soft switch and road design, the peripheral circuit design; The system software design and test results is given.Through testing and analysis of the indoor air quality, the design of the system of the indicators have reached the expected requirement. Actual test shows that the system precision has reached the requirement of practical application, has a higher cost performance and good application prospect.