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ABSTRACT

With the highly development of modern science and technology, industrial productivity is increasing, and the resulting negative impact is particularly significant, that is the environment pollution, which cause serious damage to the human health and life.Fog haze, as one of the atmospheric pollution, has been widely attention by people.Now there are more and more regions and countries begin to attach great importance to the fog weather, and regard it as a kind of severe weather.Actually, long ago reported some fog disaster events, in this case, not only harm people's health, even deprive the lives of many people, such as killing 1952 London fog and smog in Beijing in 2013 events.PM2.5 refers to environment particles less than 2.5 microns in diameter, is one of the major components of fog, because of its small size, activity is strong, easy to attach poisonous and harmful substances, thus a big threat to human health.So, for the measurement of PM2.5 is more and more important.This article will air concentrations of PM2.5 as a basis for the evaluation of air quality.Used the control core of this design is very practical to 51 series microcontroller AT89C52, cooperate with the dust concentration acquisition and display devices, common to complete data collection, processing and display.And according to set good alarm value alarm prompt, and use different color indicator shows that the air quality.Each unit circuit are introduced in detail in this paper the design process and method of realization of each function, the system has good man-machine interface, have higher measurement accuracy, not only simple and practical and easy to carry.Believe that its value will be reflected. Keywords:

Haze; Atmospheric pollution; PM2.5; Single chip microcomputer; AT89C52;Air quality

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