The Technology Research Of The Environmental Noise Data Dtorage And Graphical Representation

The graphical expression of environmental noise which is an important part of the online auto noise monitoring system can visual display the situation of environmental noise pollution,and it has practical application value in control and prevention of environmental noise monitoring.The advantages of the geographic information systems which was used in the field of environmental noise assessment were analyzed in this paper,studied the ArcGIS software architecture and the secondary development methods for ArcGIS.The design of the environment noise graphical expression system was based on ArcGIS Engine component library which was called with C#language on Microsoft.NET platform.The paper studied the method of two-dimensional graphical expression of environmental noise,proposed the way of non-uniform arrangement a small amount noise monitoring points.The two-dimensional graphical expression of environmental noise was implemented with the methods of environmental noise attenuation model and the Kriging interpolation.It was verified that this method could inverse the two-dimensional distribution law of the environmental noise point acoustic source through the example for the single point acoustic source in the area.Based on CityEngine as software platform,this paper put forward three-dimensional graphic expression of environment noise,and establishes the environmental noise monitoring model of three-dimensional space by CSG and B-Rep hybrid algorithm.Then,according to the noise data and the legend of the color grade,we render the surface area of the three-dimensional monitoring geometric model with the expression of grid method.It made exploratory research for three-dimensional graphical expression of environmental noise.The software platform of environmental noise graphical expression was designed,it included the design of the system database,the design of the system interface and the design of the system function.It provided the software platform for the data management of the environmental noise,the data analysis of the environmental noise and the graphical display of environmental noise.