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Digital city responds to relevant national policies and vigorously develops the construction of digital twin platform

2020-11-06 20:12:28 ZTMAP

One 、 Preface

        The central committee of the communist party of China 、 The State Department is dealing with 《 Hebei xiong'an new district planning outline 》 It is required to insist on “ Digital city and real city plan simultaneously 、 Simultaneous construction ” The development model of , Create a digital platform to show multi-dimensional urban space , Digital twin platform has gradually become one of the core innovative elements in the construction of innovative smart city , To support the city brain , The core foundation of promoting the construction of digital city .

Two 、 Digital twin and smart city

        Digital twin technology comes from the military industry , In recent years, it has been deeply explored and applied in the development of industrial manufacturing , During the epidemic , China Institute of aeronautical manufacturing technology used digital twin technology to rapidly develop and manufacture automatic mask machine . The function of digital twin technology is constantly expanding to various industries , The field of architecture is based on BIM Model implementation planning and Design 、 The construction of the 、 Operation and maintenance and other whole process services ; The municipal field based on digital twin technology to achieve urban planning layout 、 Traffic jam management, etc , Various applications are opening the door for the construction of digital twin city .

        The core of the smart city digital twin platform is to reshape a digital city corresponding to the real physical city in the Internet digital space , According to the correspondence between simulation entity and urban physical space entity 、 Association and collaboration , Make the digital twin city run parallel to the physical city , To realize the digitalization of all elements of the city 、 Intelligent 、 virtualization 、 visualization .

        Digital twin platform is the core component of innovative smart city architecture , According to the realization of the city all elements of Digital 、 Intelligent expression , The Internet of things in the city 、 Abstract information and functions such as big data are displayed in urban three-dimensional space , Set digital modeling 、 Linkage control 、 Simulation 、 Twins, common wisdom and other functions in one , For security tracking 、 Traffic jam simulation 、 Municipal pipe network supervision and other urban smart applications provide vivid visual information interaction interface and one-to-one accurate simulation function support .

3、 ... and 、 Digital twin platform evolution

1、 Global awareness , From emptiness to reality

        In the initial stage of digital twin platform, urban digital infrastructure is the main body , Based on the alarm terminal 、 Sensor terminals 、 Control terminal and other urban information collected , Based on Digitization 、 Intelligent modeling forms simulation mapping . Traditional urban elements gather in two-dimensional plane , Can't meet the requirements of intelligence , The core content of digital twin platform is to realize three-dimensional elements , Including urban architecture 、 road 、 Infrastructure such as pipe network , Can achieve accurate to indoor digitization 、 Intelligent modeling . in addition , According to the needs of urban operation and management , The digital twin platform also carries population information simultaneously 、 Weather information 、 Video surveillance information and other data , Become a concentrated display carrier of urban big data . at present , Beijing 、 Shanghai 、 Guangzhou 、 Shenzhen 、 jiaxing 、 Chengdu and other places have tried the three-dimensional model of the city , The whole area digitization established in Shanghai 、 Intelligent City Garden , Small to city CBD Area , The 3D digital twin platform has become an innovative smart city ( Wisdom park ) The construction and development trend of .

2、 Factor linkage , From the virtual to the real

        The second step in the rapid development of digital twin platform is to realize the real-time interaction between digital target and its physical target , The control command of digital twin platform can use transmission network 、 Sensing control devices are transmitted to physical entities , And then, we can control the physical object . The second link mainly relies on municipal government 、 Public transportation 、 The perception terminal of building and other supporting facilities , According to business requirements and terminal functions , Provide supporting facilities for health monitoring 、 Remote control 、 Fault alarm and other management and service capabilities , Realize the coordinated management and business closed-loop linkage . At present, the digital twin platform has carried out the development of facilities and equipment management functions based on business requirements , Including vehicles 、 People wait for track tracking , pipeline 、 State perception of bridges, etc , Illegal parking 、 Garbage overflowing and other city appearance supervision , Provide technical support for the construction of urban safety and civilization .

3、 Simulation , From emptiness to reality

        The third link of the rapid development of digital twin platform is to realize the simulation and dynamic prediction of the physical world , Synchronous generation optimization solution , Practice the city operation situation in the digital world . The realization of simulation relies on the cognition of the operating mechanism of the physical world , Take advantage of natural phenomena 、 The laws of Physics 、 Modeling of crowd activities, etc , Planning for the city 、 management 、 government 、 Service and so on provide scientific decision support . The foothold of digital city simulation is to make urban construction and rapid development less detours , It is the true embodiment of the value of digital twins . At present, there is no simulation product for the whole city , But public transport and other sub areas have gradually carried out relevant research , Baidu 、51World、 Zhijiang laboratory and other enterprises and scientific research institutions are carrying out simulation of actual traffic conditions for unmanned driving applications .

4、 Study and judge independently , Both the real and the virtual

        The fourth link of the rapid development of digital twin platform is the deepening of urban details , And artificial intelligence and other technologies to achieve deep integration and application . The granularity of ubiquitous perception determines the refinement level of digital twins , With the rapid development of digital twin platform construction , It will gradually be perceived from the large-scale facilities of coarse particles , Rapid development for the refinement of the individual and other entities as the unit of information perception , Constantly improve data sources , Improve the precision of urban operation management . Including computer vision 、 natural language processing 、 biometrics 、 Artificial intelligence technologies, such as knowledge mapping, are further applied , Learn from historical data 、 analysis 、 distinguish 、 Summarize and find out the law of city operation , It depends on the urban development time and space track , The future trend of drill evolution , Intelligent operation management of enabling city , It has become an advanced form of rapid development of digital twin platform .

Four 、 Typical application scenarios of digital twin

1、 Urban construction management

        Using digital twin technology to reproduce urban construction projects , For the city “ Brick by brick ” Give data properties , Already in xiong'an new district 、 Shenzhen Bantian Park 、 Dongguan Songshan Lake Park and other places of the city level 、 The park level construction project has been applied . Digital twin application of urban construction management to GIS、BIM Based on technology , Build a multi-dimensional city digital twin platform , Covering project planning 、 Design 、 The examination and approval 、 The construction of the 、 check before acceptance 、 The project life cycle of operation and maintenance , Provide a visual interactive design environment , Real time presentation of construction progress , And for certification 、 review 、 analysis 、 Management provides intuitive judgment basis , Improve the detection risk in the process of urban construction management 、 Ability to anticipate risks .

2、 Urban Smart transportation

        Smart transportation digital twin application , Use structural processing of traffic information , Create a digital twin model of urban traffic , Implement vehicles 、 road 、 Pedestrians 、 Digital traffic entities such as signal indicator lights . Use simulation to simulate a large number of traffic accident cases 、 Climate and environmental scenarios , Training unmanned algorithms 、 Signal indicator control system and other core technologies in the field of intelligent transportation , Realize high precision intelligent transportation scene detection and authentication , Driving driverless performance and maximizing road traffic .

3、 Comprehensive management of urban modernization

        The digital twin application of comprehensive management of urban modernization is to “ Snow project ”、 Police geographic information system (PGIS) Based on resources , To achieve precision to the community 、 Dynamic monitoring of public safety scenes in buildings and even indoors . The digital twin platform has become the carrier of multi complex information fusion , Gather the population fully 、 vehicle 、 Energy consumption and other data , In high-precision surveillance cameras 、 Edge of computing 、 With the support of artificial intelligence and other technical equipment , Realize intelligent supervision of floating population , Abnormal personnel in and out alarm , Illegal gathering 、 The integration of functions such as the inspection of marketing centers , Support the police 、 fire 、 Property 、 Residents and other multi-agent linkage , Improve the fine level of urban grassroots governance .

5、 ... and 、 Conclusion

        Digital twin platform has become after the urban brain , One of the key components of innovative smart city planning and layout , It's urban big data aggregation 、 The fusion 、 The essential carrier of application . At present, there has been a wave of digital twin platform construction , What can't be ignored , Based on Technology 、 The immaturity of norms , Regions 、 It is very likely that there will be incompatibilities in the separate construction of each block “ Isolated island ” problem , As a result, the construction of digital twin platform remains in the pilot demonstration stage . therefore , The digital twin platform needs to further overcome the technical shackles , Improve standards and specifications , In order to truly become the infrastructure of enabling smart city .

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