Industry application of smart city based on GIS 3D visualization

The three dimensional GIS Brief introduction to core technology
（1） True 3D GIS Data model and GIS Data modeling .

         True 3D GIS Data entity model is one of the three-dimensional core technologies , According to the reasonable and effective description of indoor space geometric model 、 Topology and semantics , Reasonably and effectively maintain the three-dimensional geometric representation of fine management , A word meaning statement that truly maintains the characteristics of infrastructure construction , Expand the relationship between the information content of the Internet of things , So as to maintain the hierarchical description of complex landform . Throughout the data model ,GIS The real guarantee of the popularization and application of the technology depends on the sufficient standard of the data acquisition precision of the three-dimensional indoor space technology , according to The three dimensional GIS Application of technology and standards , For example, three-dimensional CAD entity model 、BIM The content entity model of engineering building information and its application GIS The most advanced technology combining 3D technology with solid model .

         The three dimensional GIS The larger characteristics of the model depend on the reasonable and effective transformation of maintaining the level of high and low key points , Create a more detailed 、 Efficient 3D data solid model , Reasonable and effective practical activities smart city 3D model technical standards .

（2）GIS Data organization management mechanism and three-dimensional visualization analysis .

         In 3D GIS The difficulties encountered by the organization and management in the process of development are embodied in two levels ：I/O Short board and network server feature short board . In the mechanism stage of 3D data , Usually, there is a large amount of data in the database entity model and uneven division of many indoor spaces , prompt GIS Data institutions have serious problems I/O Short board of data management method . At the feature level of the web server , In the whole process of 3D data analysis and real-time visualization, there are usually complicated problems in the actual operation of indoor spatial data , There is no way to maintain a reasonable and effective organization and management method .

         So , To improve GIS Reasonable and effective unification of data model , Pay attention to dynamic adjustment mechanism in system software development , Moderately improve the database index of three-dimensional interior space 、 Communication transmission and other system software management mechanisms . Set according to the user requirements of different levels GIS Data organization management mechanism , Achieve the reasonable and effective purpose of data sharing resources , Attaches great importance to GIS Relationship between word meaning and cognition , Truly improve the intelligent search ability of the database .

         For smart urban planning and construction ,GIS The technology is reasonable and effectively improves the shared resources of the database , Reasonably and effectively improve the utilization efficiency of big cities , Show social business system for fine management . In data organization mode and relative indoor spatial database index , Consider the application requirements of real-time visualization . At the level of three-dimensional visual analysis ,GIS Data reasonably and effectively improve the interactive communication between man and machine , Pay attention to the quality of image information content and the actual effect of the scene , Focus on timeliness and high-precision practical results .

         In the whole process of the development trend of traditional visualization technology , Most of the technical machinery and equipment will usually suffer from the hazards and limitations of complex scenarios and key points , Try to avoid the waste of time in file format entity model conversion . According to the reasonable and effective production scheduling system of three-dimensional indoor space , Reasonably and effectively keep the part dynamic and improved , Consider the visualization requirements of different scenarios in more aspects . The integration of 3D visualization and spatial analysis , We should closely expand and promote the cooperation and communication at the application level of information management . Consider comprehensively , Pay attention to the topological relationship of word meaning , Keep the visualization of dissecting scientific research . Pay close attention to the visualization of natural environment and space simulation , Reasonable and effective cooperation GIS Three dimensional visual analysis of data .

The three dimensional GIS Examples of core technology application

         The three dimensional GIS The development trend of smart city has become the theme of smart city infrastructure construction , It has gradually penetrated into all fields of urban development . Analyze by the characteristics of a place , At this stage, the site has been completed 9218 Square kilometer architecture entity model 、525 Three dimensional solid model of square kilometers and 400 Multi square kilometer underground pipeline data entity model , The collection of data is kept true 、 manufacturing 、 Maintenance and operation ― Integrated management system .

         according to GIS Application and practice of core technology , Promote the basic construction and overall planning of big cities to be more unified in effective scientific research , Keep the data true 、 Sustainable upgrading of information content and its characteristics . According to the three-dimensional unified management method , Reasonably and effectively improved the efficiency and speed of the local overall planning review , In addition, it has further improved the operation and integration of big cities , It integrates a large number of big city reviews, such as population 、 Malignant events 、 Legal representatives and other special lectures , It has reasonably and effectively improved the rationality of the overall planning and strategic decision-making of big cities , Reasonably and effectively maintain the integrated resources and utilization of the place , Promote the region to firmly step into the smart city .

         As a new generation of technical support, smart cities , According to Internet of things technology, cloud computing technology and other technologies, the smart industry of urban planning and construction will maintain the concept of sustainable development , Maintain the sustainable development concept of smart city reasonably and effectively , The most unforgettable embodiment of the people-oriented development strategy .

The three dimensional GIS Actual effect and future prospect in smart city

         From 3D GIS In terms of the actual effects in smart cities , Instant 3D GIS Technology can reasonably and effectively load-bearing IOT network and sensor technology system software , Will really 、 The accurate object image carries out dynamic display 、 Solve and share resources , Maintain a reasonable and effective connection between big cities and big numbers , So as to better provide us with a more compact indoor space for our work . This kind of technology cannot be maintained by the traditional urban planning and construction design effect drawing and sand disc technology .

         from GIS Technology in the future development trend of smart city infrastructure ,GIS The application and development prospect of technology in urban planning and construction need to start from today's three-dimensional perspective GIS To instant GIS show . That is, the three-dimensional style 、 Dynamic real world omni-directional and appropriate projection database , keep GIS The power of Technology , Show you the convenient and fast service items truly .

         The smart city can reasonably and effectively coordinate the virtual topography , According to the reasonable and effective fusion of quantitative analysis and judgment , Maintain the sustainable development trend of scientific research and technology , According to panorama, 3D cloud and other new technology 3D data , An intelligent system that truly maintains the seamless splicing of the navigation bar of a smart city and the accurate positioning of a big city . The three dimensional GIS technology , From the future development trend , It must be able to reasonably and effectively ensure the safety of big cities and the basic construction of smart cities , promote GIS Visualization of data entity model and analysis of indoor space , Better service for everyone's life .