Research On Air Environment And Its Control Technology Inside Vehicle

With the developing of society and improving of living standards, vehicles become indispensable to people's daily life and people will stay inside vehicles longer. Air quality inside vehicle has become a hot issue. At present, most vehicles installed with air-conditioning (AC) systems which can only control temperature and humidity condition without the ability to monitor, to control the composition, content and degree of pollution and to reduce the damages to human being brought by the harmful gases. People's demand of air quality and comfort inside vehicles are improving. Aiming at the improving of air quality inside vehicle this dissertation has studied the air condition inside vehicle and its control technology systemically.This dissertation analyzed the main chemical contaminants and sources of polluted air inside vehicles and its impact on human health based on the comparing of the air condition differences between the air condition inside vehicles and in buildings. The influence factors of thermal environment and its effect on human health and air quality were studied in this dissertation too.Combining the related national standard on air quality and based on the attribute identification theory, the attribute recognition theoretical model of air quality inside vehicle was established. According to measured data of air contamination, this dissertation evaluated the secondary level attribute measurement comprehensively. The result is similar to the result of fuzzy comprehensive evaluation, and it's simpler, easier to realize.Based on basic principles of fuzzy control, this dissertation designed the main function and overall scheme of air condition control system inside vehicle. The design of inside vehicle fuzzy controller for fresh air volume and temperature was deeply present and the simulation was finished using MATLAB& Simulink software.Aiming at the improvement of the passenger health and the comfort of the air, the inside vehicle air condition intelligent control system presented by this dissertation can meet people's requirements on the air environment and play a significant role in protecting passengers' health and in developing of our country's vehicle air conditioning technology.