Why do urban digital twins arise?

Digital Twin Cities is a virtual city model created by digital technology and big data analysis. Based on the real city, it realizes the digital reproduction and simulation of the city by collecting and integrating various urban data. Including urban geographic information, buildings, facilities, population, transportation, environment and other elements. Provide real-time urban data and forecasting simulation capabilities, help urban decision makers better understand the laws of urban operation and behavior, and support the formulation and implementation of urban planning and management decisions. It can be applied to urban planning, traffic management, environmental protection, emergency management, operation and maintenance of municipal facilities, etc. It plays an important role and significance in improving the efficiency and quality of urban operation.

The advantage of digital twin cities is that it can provide comprehensive and real-time urban data, support urban decision makers to make decisions faster and more accurately, and help cities operate more efficiently; Simulation is carried out in the virtual environment to verify the effects of various planning schemes, policies and decisions, and reduce the risks and costs of decision-making.

Digital twins have multiple sets of smart city management and control systems. Focusing on public management, industrial development, life service and other businesses, it provides functions such as energy consumption environment monitoring, equipment safety supervision and comprehensive situation monitoring. , so that the original independent system in the city forms a linkage scheme according to the management characteristics.

Based on the city, the city's infrastructure data is displayed intuitively in a more diversified form; Combine GIS data with cloud computing, big data, Internet of Things and other technologies to build a real digital economy, digital city and digital China; Based on time and space, through visual analysis technology, it provides technical support for urban planning, layout, analysis and decision-making, and promotes urban digital transformation and construction.

It plays an active role in improving the regional investment environment, introducing foreign capital, promoting the adjustment of industrial structure and developing the economy, and has become a booster for urban economic take-off. Planning has a great influence on the future construction of the city. The panels on both sides of the big screen of digital twin cities present information such as the total planned area, the number of planned buildings, bus lines and stations. Regional planning can be divided into construction land, green land, residential land, commercial land, traffic land, water conservancy land and so on. In land use planning, different color blocks are used to distinguish. Through the analysis of land distribution, land demand and functional orientation, the development intensity, land use scale and control requirements of the plot are reasonably determined.

As an important part of urban infrastructure, underground pipe network is the material basis for urban survival and development, and is known as the "lifeline". According to the thickness, buried depth and type of pipe network, the line data of TV pipe network, water supply pipe network, power pipe network, gas pipe network, communication pipe network, sewage pipe network, rainwater pipe network and reclaimed water pipe network are presented in three dimensions.

The urban scene not only uses the three-dimensional real-life data of aerial oblique photography, but also carries out fine restoration modeling of the human body in the form of three-dimensional simulation, from the overall environment to the surrounding environment of the building, and then to the three-dimensional simulation display of the equipment inside and outside the building. Using lightweight three-dimensional modeling technology, according to CAD drawings, bird's-eye views, three views of equipment and other data, the appearance is modeled and restored with high precision. By implementing an interactive Web 3D scene, it can be scaled, translated and rotated, and every device in the scene can respond to interactive events.

With the development of information technology, there are more and more ways of building management. The deployment of building elevator system, building lighting system, fire fighting system, security system, environment and air conditioning system can fully realize the intellectualization and digitalization of building management. On the basis of visual integration and docking of various business systems, intelligent buildings realize comprehensive and unified management of building systems through visual platforms, which reduces the burden of building management costs and improves the efficiency of operation and management. Hightopo also provides various targeted solutions for different architectural situations.

The traffic system can display the peak speed in real time and predict the future traffic congestion. In the aspect of illegal accidents, the multi-screen video monitoring system and the function of real-time monitoring video around events have been added to help managers visually monitor key personnel, vehicles, alarm events and other public security elements.

Access to tilt photography, GIS spatial information data, intelligent Internet of Things data and big data system platform and other data information, combined with lightweight modeling solutions, even mobile phones can view 3D visualization effects anytime and anywhere, improve management and operation efficiency, and provide solutions for intelligent construction, digital transformation and integrated management.