Study On Application Of Remote Sensing Monitoring Technique In Vehicle Exhaust Pollution Monitoring In Urumqi

The level of economic development in our country has risen rapidly,the quality of national life has been continuously improved,the level of science and technology has been improved,and the number of domestic motor vehicles has also increased.Therefore,in order to ensure good air quality,it is particularly important to accurately measure and obtain vehicle exhaust emissions in a timely manner,to accurately assess the actual overall emission levels of vehicle exhausts,and to correctly assess the total pollutant emissions of fleets in narrow areas.This study carried out a comparative study of vehicle exhaust gas remote sensing monitoring and other reliable operating conditions method emission tests,to improve the correlation between remote sensing monitoring methods and other exhaust gas measurement methods,and to break through the application bottleneck of remote sensing monitoring technology.conclusion as below:(1)The use of remote sensing technology to collect urumqi emissions data,an improved based on a semi-supervised collaborative training regression method,under the condition of without changing the original data distribution,the outliers in the raw data collected with the missing value preprocessing,obtain and reliable telemetry data,remote sensing method and the correlation between other exhaust measurement method.To screen out the reliable exceeded vehicle data to review,for the follow-up implementation of accurate governance to provide a basis.(2)Analyze from a microscopic perspective.Based on the quantitative relationship between fuel consumption and various pollutants,micro synthetic prediction model is obtained.Finally,the model constructed in this paper is verified according to the measured data:the results show that the average error between the predicted and measured values of CO and NO in the pollutant is 14.3%and 12.8%respectively,and the fuel consumption level can be well used to predict the exhaust emission level.From a micro point of view,the prediction results provide a good basis for further exploration of the relationship between fuel consumption and emissions.(3)From the macro point of view,the exhaust emission factors of motor vehicles were studied:according to the tunnel method,telemetry was used to monitor the exhaust emission of motor vehicles during the morning rush hour,and the macro calculation method of pollutant tunnel test was improved.Multiple regression was carried out to obtain the pollutant emission of the corresponding model.lt provides data support for obtaining urban vehicle pollution contribution rate.(4)Put forward the control measures of vehicle exhaust emission.The control measures are put forward from inside and outside the plane,as well as the current prevention and control measures for NOx emission control by bus vehicle exhaust Meanwhile,the current prevention and control measures for NOx emission control by bus vehicle exhaust are strengthened.Provide technical support for urban operation vehicles.