Study On Urban Area Noise Map Prediction Modeland Its Application

Urban environmental noise pollution has become increasingly prominent,seriously affecting people's work and life.However,it is difficult to accurately,intuitively and specifically describe the regional noise distribution due to the complexity of the sound source,the sound characteristics and the acoustic space distribution of the regional environment.Therefore,it is urgently needed breaking in the noise prediction and evaluation methods and technology,and the rapid development of large data intelligent processing and computer simulation technology to provide a basis for this study.Based on this,this paper puts forward the idea of regional noise map for urban environment noise,and studies the prediction method and application technology of regional noise map.The two-dimensional and three-dimensional regional noise distribution maps are generated by using the combination of noise signal and geographic information,extension method of forecast data and measured data,and numerical chromatography method.The distribution of noise pollution is demonstrated efficiently,accurately and intuitively in the form of figures and renderings,achieving comprehensive prediction and evaluation of noise source,noise field and its distribution in the time domain and spatial domain.This paper is funded by the National Natural Science Foundation of China(61401245,61671262),The main contents and innovations of this paper are as follows:1)set up a set of real-time data acquisition and processing system of noise collection and GIS integration.A set of portable mobile noise data acquisition equipment and fusion data analysis system is designed and developed.Combined with the GPS module to achieve the regional noise data and geographic information data real-time acquisition and processing.2)The optimal prediction model for urban area noise prediction is proposed.The prediction model parameters are optimized by predictive simulation and experimental experiments,and the corresponding correction methods are proposed.The corrections,corrections and correction results are given and verified experimentally.3)A program for noise prediction and GIS fusion and noise visualization software were developed.Based on the Visual Studio 2015 development environment,the system design and function development of the noise map is completed,and the integration of noise prediction and GIS is realized.The problem of noise data and geographic information matching,fusion and real-time transmission and sound field visualization are solved,achieving the two-dimensional,three-dimensional reproduction of the sound field and geographical location.4)Draw a campus area noise map.Using the noise forecasting system combined with the noise monitoring data to realize the automatic mapping of campus noise map of Qingdao University of Technology,the noise situation of different areas on campus is given.