A multi-layer fusion digital twin space model organization method and system

Abstract

The application discloses a multi-layer fusion digital twin space model organization method and system, and belongs to the technical field of meta-universe and digital twin. The whole space model is described in units of products, an update area is defined under the products, layers are used to describe under the update area, and a hierarchical and block mechanism is adopted to divide the space. The space model adopts a WGS84 coordinate system, one database includes multiple products, each product is composed of one or more update areas, each update area contains various layers describing physical elements, and the space under the same coordinate system is divided into different levels and different square grid blocks. The application can realize that each product in the space model is relatively independent, version control and updating are not affected by other products, and the space model can be expanded in the form of layers according to the design principle.

Description

Technical Field

[0001] This invention relates to the field of metaverse and digital twin technology, specifically a method and system for organizing a multi-layered digital twin spatial model. Background Technology

[0002] With my country's proposal to develop the digital economy and promote technological innovation and provide industry solutions in key digital economy sectors such as virtual reality and augmented reality, coupled with the maturation of the metaverse concept and technological development, immersive interactive content, interactive hardware, engine tools, cloud computing, and security technologies are all making comprehensive strides. As a channel connecting the real and virtual worlds and a carrier of human digital existence, digital twin technology is the cornerstone of building the "metaverse." Although a consensus definition for digital twins has not yet been reached, it is essentially a virtual entity equivalent to a physical entity. This virtual entity can monitor, simulate, analyze, and calculate the physical entity based on real-time feedback information, thereby providing accurate analysis and decision-making. It requires the virtual representation and mapping of physical entities, events, and relationships in physical and social spaces. This data resource is formed through the transformation, transmission, and processing of information infrastructure. Supported by general service capabilities, it is further integrated with digital twin technology to form digital twin services that can be provided externally. Therefore, a digital twin space model (as attached) is needed. Figure 3 (As shown) This has become the key to the healthy iteration and implementation of digital twin applications.

[0003] Existing digital twin models have industry-specific characteristics, and the spatial models formed by different modeling techniques also have their own unique features. City Information Modeling (CIM) uses multi-source sensor technologies such as integrated aerial and ground oblique photography and laser scanning to acquire holographic geographic entity elements through traditional surveying or holographic surveying. It describes integrated structured urban information that is underground and above ground, indoor and outdoor. Building Information Modeling (BIM) uses computer-aided design to construct and store the geometric and non-geometric information and relationships of all components and parts of buildings and facilities. It realistically reflects the geometric features, style, height, distribution, location, texture, color, and other characteristics of various parts of an object at a 1:1 scale. There are also techniques such as geometric modeling, network partitioning, system modeling, process modeling, and organizational modeling to construct spatial models for different scenarios, each with its own characteristics. The OpenGIS Consortium (OGC), based on its existing public geographic models, has developed an extension set of Extensible Markup Language (XML)—Geography Markup Language (GML)—that conforms to the characteristics of geospatial data organization by encapsulating geographic information and its attributes. GML has become the de facto standard for exchanging web geospatial data, representing models in the form of metadata and entities. On intelligent terminals such as augmented reality (AR), virtual reality (VR), robots, and industrial digital twin machine tools, sub-meter, centimeter, or even millimeter-level positioning and guidance are achieved through the data paradigm of high-precision maps. The construction of virtual space usually comes from IoT sensing devices such as camera visual information, lidar, IMU, and GPS. Lane-level road network information such as lane line position, type, direction, and traffic restrictions, as well as positioning layers and dynamic maps, are detected, identified, and stored. The OpenDRIVE spatial model format specification has also been proposed.

[0004] In recent years, the heterogeneity of data information, coupled with the widespread application of digital twins in smart cities, industrial metaverses, and twin water conservancy, has led to significant fragmentation of application scenarios, a lack of consistency in metadata representations, and an inability to achieve cross-domain horizontal replication. Digital twin spatial models have emerged to address this issue. Through abstract modeling and digital description of physical elements, they provide standardized data structure descriptions and definitions, as well as unified interface services, for upper-layer application development and end-users. Existing digital twin spatial models can not only describe spatial geographic information, city-level information, building-level information, and lane-level road information, but also comprehensively consider the storage of physical element data mapping under different application scenarios, dynamically expanding layer description storage to ensure information consistency and comprehensive data application. Summary of the Invention

[0005] The technical objective of this invention is to address the above-mentioned shortcomings by providing a method and system for organizing a multi-layered digital twin spatial model. This method and system can ensure that each product in the spatial model is relatively independent, and that version control and updates are not affected by other products. The model can be expanded in layers as needed based on the design principles of the spatial model.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A method for organizing a multi-layered digital twin spatial model, wherein the entire spatial model is described by product, an update area is defined under the product, layers are used to describe the update area, and a layered and block-based mechanism is adopted to divide the space.

[0008] The spatial model adopts the WGS84 coordinate system. A database includes multiple products, each product consists of one or more update regions, and each update region contains various layers describing physical elements, dividing the space under the same coordinate system into different levels and different square grid blocks.

[0009] This spatial model supports a unified description of information ranging from large-scale spatial geographic information to lane-level or component-level information.

[0010] This method defines an organizational approach for digital twin spatial models, using layers to divide and organize regional data, and a hierarchical and block-based strategy to support expansion mechanisms. This ensures that one or more regions can be dynamically updated, thereby achieving relative independence for each product in the spatial model, ensuring that version control and updates are not affected by other products, and allowing for expansion in a layered manner as needed based on the design principles of the spatial model.

[0011] Preferably, each product database can come from different data production companies or from different versions of data from the same company. The product mechanism supports the horizontal expansion of the described content as needed within a spatial model.

[0012] Preferably, the product defines an update area. For city information description, the update area is a specific administrative division. For other scenarios, the update area is a general term for aggregation and classification. The setting of the update area is used to ensure that data updates can be performed locally.

[0013] Preferably, the updated area is described using layers, where each layer element has its own attributes and relationships with other elements, which are recorded in grid cells that are blocks in order of mutual reference.

[0014] Preferably, the layers include preset layer definitions, including digital terrain models, 3D lane models, satellite imagery, building models, 3D landmarks, and 3D icons;

[0015] Alternatively, a new layer description can be added as needed according to the database format requirements. When some information in a layer changes, the changed information will be categorized and mapped to the specific data content layer, and the corresponding data blocks will be updated.

[0016] Preferably, the layered and segmented mechanism adopts the WGS84 coordinate system, and the data is stored in a multi-scale manner in different layers; as the scale changes, the described physical elements are integrated, and the less important elements are filtered out.

[0017] Data at a specified scale for a certain content layer is organized in blocks. Each block is a regular square grid with no overlap. In the spatial model database, this corresponds to a row of records in the data table.

[0018] Preferably, the spatial model supports the following update methods:

[0019] Incremental updates to the entire database;

[0020] Incremental updates to products, update areas, layers, etc. at a certain level;

[0021] Expand the types of elements horizontally from products, update areas, and layers;

[0022] Updating, replacing, and adding attributes.

[0023] Preferably, this spatial model integrates the standard specifications for urban description and geospatial information description from Building Information Modeling (BIM) / City Information Modeling (CIM), thus better addressing data model compatibility issues.

[0024] The present invention also claims a multi-layer fusion digital twin spatial model system, including a multi-layer fusion digital twin spatial model, a physical application, and a data storage and processing device. The multi-layer fusion digital twin spatial model is the aforementioned multi-layer fusion digital twin spatial model. The multi-layer fusion digital twin spatial model connects multi-source data generated in the physical world through the physical application and realizes the connection of virtual world applications through the data storage and processing device.

[0025] The multi-layered fusion digital twin spatial model defines the storage method and storage elements of the data required by the physical application side, stores the logical relationships required by the virtual application, and provides a unified data access interface for the virtual application.

[0026] The present invention also claims a computer-readable medium storing computer instructions that, when executed by a processor, cause the processor to perform the above-described multi-layer fusion digital twin spatial model organization method.

[0027] Compared with existing technologies, the multi-layer fusion digital twin spatial model organization method and system of the present invention have the following advantages:

[0028] This multi-layer fusion digital twin spatial model organization method effectively solves the problems of data model compatibility, rapid incremental updates, and dynamic expansion of layers as needed. It provides a unified data description for the development of cross-domain digital twin productivity tools, reduces the difficulty of joint applications of different twins, and improves the efficiency and environmental adaptability of building digital twin scenarios. Attached Figure Description

[0029] Figure 1 This is a diagram illustrating the mechanism of a multi-layer fusion digital twin spatial model provided in one embodiment of the present invention;

[0030] Figure 2 This is a diagram illustrating the interaction relationship between a multi-layer fusion digital twin spatial model and its layers, provided in one embodiment of the present invention.

[0031] Figure 3 This is a functional block diagram of digital twins as described in the background section of this invention. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments.

[0033] This invention provides a method for organizing a multi-layered digital twin spatial model. It comprehensively considers the physical element representation requirements of fields such as smart cities, digital twin water conservancy, and industrial digital twins. It integrates the standard specifications for urban description of building information models / city information models and the description specifications for geospatial information (high-precision maps), and introduces a mechanism for updating regions, layers, and hierarchical blocks to meet the model description requirements of various digital twin scenarios and facilitate incremental updates.

[0034] The spatial model adopts the WGS84 coordinate system. A single database includes multiple products, each consisting of one or more update regions. Each update region contains layers describing physical elements, dividing space within the same coordinate system into different levels and square grid blocks. This supports a unified description of information ranging from large-scale spatial geographic information to lane-level or component-level information. The model defines an organizational method for the digital twin spatial model, using layers to organize regional data and a hierarchical, block-based strategy to support expansion mechanisms. This ensures that one or more regions can be dynamically updated, achieving relative independence for each product in the spatial model, with version control and updates unaffected by other products. The model can be expanded as needed using layers based on its design principles.

[0035] The entire spatial model is described in units of products. Each product database can come from different data production companies or different versions of data from the same company. The product mechanism supports the horizontal expansion of the described content as needed within a spatial model.

[0036] Define update areas under the product. For city information description, the update area can be a specific administrative division. In other scenarios, the update area can be a general term for aggregation and classification. The setting of update areas is used to ensure that data updates can be performed locally.

[0037] Layers are used to describe the updated area. Layer features have their own attributes and relationships between features, which are recorded in grid cells that are blocks in order of mutual reference.

[0038] The layers include preset layer definitions, including digital terrain models, 3D lane models, satellite imagery, building models, 3D landmarks, and 3D icons;

[0039] Alternatively, a new layer description can be added as needed according to database format requirements, such as dynamically expanding city objects and attributes in a city information model, or dynamically expanding internal building components in a building information model. When some information in a layer changes, the changed information is categorized and mapped to specific data content layers, and the corresponding data blocks are updated.

[0040] The space is divided using a hierarchical and block-based mechanism, and the WGS84 coordinate system is used. In different layers, the data is stored in a multi-scale manner. As the scale changes, the physical features described are integrated, and less important features are filtered out.

[0041] Data at a specified scale for a certain content layer is organized in blocks. Each block is a regular square grid with no overlap. In the spatial model database, this corresponds to a row of records in the data table.

[0042] The spatial model supports four update methods:

[0043] One is an incremental update of the entire database;

[0044] Second, incremental updates are performed on products, update areas, layers, etc. at a certain level.

[0045] Third, we will expand the types of elements horizontally from products, update areas, and layers;

[0046] Fourthly, it involves updating, replacing, and adding attributes.

[0047] This multi-layer fusion method for organizing digital twin spatial models primarily addresses the incompatibility issues between spatial models and the need for dynamic expansion based on scenario requirements arising from heterogeneous data and fragmented application scenarios during digital twin construction. It integrates the standard specifications for urban description from Building Information Modeling (BIM) and the description specifications for geospatial information (high-precision maps), introducing mechanisms for updating regions, layers, and hierarchical segmentation. This effectively solves the problems of data model compatibility, rapid incremental updates, and dynamic layer expansion as needed. It provides a unified data description for the development of cross-domain digital twin productivity tools, reducing the difficulty of joint applications of different twins and improving the efficiency and environmental adaptability of digital twin scenario construction.

[0048] This invention also provides a multi-layer fused digital twin spatial model system, including a multi-layer fused digital twin spatial model, physical applications, and data storage and processing devices. The multi-layer fused digital twin spatial model is the same as described in the above embodiments. This multi-layer fused digital twin spatial model connects multi-source data generated in the physical world through physical applications and realizes the connection of virtual world applications through data storage and processing devices. (See attached figure.) Figure 2 As shown.

[0049] The multi-layered fusion digital twin spatial model defines the storage method and storage elements of the data required by the physical application side, stores the logical relationships required by the virtual application, and provides a unified data access interface for the virtual application.

[0050] This invention also provides a computer-readable medium storing computer instructions. When executed by a processor, the computer instructions cause the processor to perform the multi-layer fusion digital twin spatial model organization method described in the above embodiments. Specifically, a system or apparatus equipped with a storage medium storing software program code that implements the functions of any of the above embodiments can be provided, and the computer (or CPU or MPU) of the system or apparatus can read and execute the program code stored in the storage medium.

[0051] In this case, the program code read from the storage medium can itself implement the function of any of the above embodiments, and therefore the program code and the storage medium storing the program code constitute part of the present invention.

[0052] Examples of storage media used to provide program code include floppy disks, hard disks, magneto-optical disks, optical disks (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), magnetic tapes, non-volatile memory cards, and ROMs. Alternatively, program code can be downloaded from a server computer via a communication network.

[0053] Furthermore, it should be clear that not only can the program code read by the computer be executed, but also the operating system or other components operating on the computer can be instructed based on the program code to perform some or all of the actual operations, thereby realizing the function of any of the embodiments described above.

[0054] Furthermore, it is understood that the program code read from the storage medium is written to the memory set in the expansion board inserted into the computer or to the memory set in the expansion unit connected to the computer. Then, based on the instructions of the program code, the CPU or other components installed on the expansion board or expansion unit execute some and all of the actual operations, thereby realizing the function of any of the embodiments described above.

[0055] The present invention has been shown and described in detail above with reference to the accompanying drawings and preferred embodiments. However, the present invention is not limited to these disclosed embodiments. Based on the above embodiments, those skilled in the art will know that more embodiments of the present invention can be obtained by combining the code review methods in the different embodiments. These embodiments are also within the protection scope of the present invention.

Claims

1. A multi-layer fused digital twin spatial model organization method, characterized in that, The whole space model is described in units of products, update areas are defined under the products, described using layers under the update areas, and the space is divided using a hierarchical and block mechanism; The space model uses the WGS84 coordinate system, a database includes multiple products, each product is composed of one or more update areas, each update area contains various layers describing physical elements, and the space under the same coordinate system is divided into different levels and different square grid blocks; The update areas are described using layers, layer elements have their own attributes and relationships between elements, and are recorded in grid cells in units of blocks through mutual references; The layers include pre-defined layer definitions, including digital terrain models, 3D lane models, satellite images, building models, 3D landmarks, and 3D icons; Or add a layer description as needed according to the database format requirements, when part of the information in the layer changes, the changed information is classified and corresponds to the specific data content layer, and the corresponding data block is updated; The hierarchical and block mechanism uses the WGS84 coordinate system, and data is stored in multiple scales in different layers; With the change of scale, the described physical elements are integrated, and less important elements will be filtered out; For data at a specified scale of a certain content layer, a block organization is used, each block is a regular square grid, and there is no overlap between them. In the space model database, it is a row record in the data table. The update methods supported by the space model include: Incremental update of the entire database; Partial incremental update of a product, update area, and layer under a certain level; Horizontal expansion of element types from products, update areas, and layers; Update, replace, and add attributes.

2. The multi-layer fused digital twin spatial model organization method according to claim 1, wherein, Each product database can be from different data production companies or from different versions of data from the same company. The product mechanism supports horizontal expansion of the described content under a space model.

3. The multi-layer fused digital twin spatial model organization method according to claim 1 or 2, characterized in that, The update area under the product is a specific administrative division for city information description, and the update area is an aggregate classification in other scenarios. The setting of the update area is used to ensure that data updates can be performed locally.

4. The multi-layer fused digital twin spatial model organization method of claim 1, wherein, The space model combines the standard specifications of Building Information Model / City Information Model for city description and the description specifications of geographic spatial information.

5. A multi-layer fused digital twin spatial model system, characterized in that, The multi-layer fusion digital twin space model, physical application, and data storage and processing device, the multi-layer fusion digital twin space model is any one of claims 1-4, the multi-layer fusion digital twin space model connects multi-source data generated by the physical world through the physical application, and realizes the connection of the virtual world application through the data storage and processing device; The multi-layer fusion digital twin space model defines the storage method and storage elements of the data required by the physical application side, and stores the logical relationship required by the virtual application, and provides a unified data access interface for virtual application access.

6. A computer readable medium characterized by The computer readable medium has stored thereon computer instructions, which, when executed by a processor, cause the processor to perform the method of any one of claims 1 to 4.

Images