Digital twin dam construction method and system based on holographic physical image

Abstract

The invention provides a digital twin dam construction method and system based on a holographic physical image, and the method comprises the steps: constructing a holographic transparent dam corresponding to an entity dam according to an initial BIM model of an internal structure of the entity dam; acquiring various different three-dimensional physical field data of the entity dam according to a physical sensing system; fusing the three-dimensional physical field data into a polyhedral unit in the holographic transparent dam to form a holographic physical body unit; and carrying out image visualization on the holographic transparent dam comprising the holographic physical body units to obtain a digital twin dam corresponding to a holographic physical image so as to holographically display three-dimensional physical field data corresponding to each holographic physical body unit. According to the method and the device, the defects that in the prior art, a twin dam model is incomplete in internal structure display, mainly based on a three-dimensional geometric structure and appearance modeling and assisted by discrete monitoring data, physical perception information is insufficient, and visualization and interaction analysis capability is insufficient are overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of digital twin water conservancy projects, and in particular to a method and system for constructing a digital twin dam based on holographic physical images. Background Art

[0002] Digital twin water conservancy projects are based on physical water conservancy projects, are based on spatiotemporal data, are centered on mathematical models, and are driven by water conservancy knowledge. They digitally map, intelligently simulate, and preview all elements and the entire construction and operation process of physical water conservancy projects. This enables synchronized simulation and operation with physical water conservancy projects, virtual-real interaction, and iterative optimization. Extensive research has been conducted on the construction of digital twin water conservancy systems.

[0003] The digital twin water conservancy project data base contains multi-scale, multi-dimensional, heterogeneous, and multi-source information, presenting a holographic information characteristic of "global space, multiple spatiotemporal scales, and all elements." Risk assessments based on incomplete information are inaccurate, and the occurrence of safety risks will trigger a series of invisible changes in acoustic, optical, electrical, thermal, and magnetic signals. The construction of digital twin water conservancy projects is of great significance to the development of digital twin water conservancy projects by sensing the multi-physical field signals associated with internal dam defects, such as acoustic, optical, electrical, magnetic, and thermal signals, reconstructing higher-dimensional and higher-information-density physical images, and using these physical images as the data source to build a holographic imaging framework for dam safety scenarios.

[0004] Traditional digital twin dams suffer from several drawbacks. First, as a digital representation of the actual dam, the 3D twin model must reflect the 3D structure. However, current twin dam models incompletely display the internal structure. Current 3D twins primarily rely on 3D geometry and appearance modeling, supplemented by discrete monitoring data. This results in insufficient physical perception information and limited visualization and interactive analysis capabilities. Summary of the Invention

[0005] The present invention provides a method and system for constructing a digital twin dam based on holographic physical images, which is used to solve the defects of the twin dam model in the existing technology, such as incomplete display of internal structure, insufficient physical perception information, and insufficient visualization and interactive analysis capabilities.

[0006] The present invention provides a method for constructing a digital twin dam based on holographic physical images, comprising: Based on the initial BIM model of the internal structure of the physical dam, a holographic transparent dam corresponding to the physical dam is constructed; Acquire various three-dimensional physical field data of the physical dam based on the physical perception system; fusing the three-dimensional physical field data into the polyhedron units in the holographic transparent dam to form holographic physical volume units; The holographic transparent dam including the holographic physical unit is image-visualized to obtain a digital twin dam corresponding to the holographic physical image, in which the three-dimensional physical field data corresponding to each holographic physical unit is holographically displayed.

[0007] In some embodiments, constructing a holographic transparent dam corresponding to the physical dam based on the initial BIM model of the internal structure of the physical dam includes: Determining a polyhedral grid as a spatial three-dimensional grid division unit, wherein the polyhedral grid includes a tetrahedral grid or a hexahedral grid; Dividing the initial BIM model of the internal structure of the solid dam into a plurality of polyhedral units according to the spatial three-dimensional grid division unit; According to the internal structure of the physical dam, the polyhedron units are combined into the corresponding holographic transparent dam.

[0008] In some embodiments, the three-dimensional physical field data corresponds one-to-one to the holographic physical image; The holographic physical image includes at least one of the following: Crack imaging for determining crack geometry in physical dams; Microseismic images used to perceive microseismic events at physical dams; Basic imagery for determining the location of the water-rich area of the physical dam; Wave velocity images used to identify defects within concrete dams; Temperature images used to characterize the three-dimensional distribution of the temperature field inside the physical dam; Stress imaging used to characterize the three-dimensional distribution of stress fields inside a solid dam; Metal structure imaging used to identify defects in the metal structure of a solid dam.

[0009] In some embodiments, fusing the three-dimensional physical field data into polyhedral units in the holographic transparent dam to form holographic physical volume units includes: For each polyhedral unit in the holographic transparent dam, determining the geometric center coordinates of the polyhedral unit; Determine a plurality of the three-dimensional physical field data in the geometric center coordinates; Performing inverse distance weighted interpolation calculation on the three-dimensional physical field data to obtain corresponding multi-physical field values; The multi-physical field values are assigned to corresponding polyhedral units to obtain holographic physical unit.

[0010] In some embodiments, the method further comprises: Constructing a diagnostic analysis system for the physical dam based on the digital twin dam; The physical dam is diagnosed for potential safety hazards based on the diagnostic analysis system, and an early warning is issued when potential safety hazards are diagnosed in the physical dam.

[0011] In some embodiments, the functions of the diagnostic analysis system include at least one of the following: 3D sectioning function, used to monitor the internal structure of the physical dam; Isosurface extraction function, used to extract surface models with specific thresholds from the holographic physical volume elements of the digital twin dam; A volume measurement function is used to calculate the volume of a preset area in the holographic physical unit and to count the multi-physical field values of the preset area; The image data fusion function is used to fuse the multi-physical field values in the holographic physical unit and then visualize it when visualizing the digital twin dam image.

[0012] The present invention also provides a digital twin dam construction system based on holographic physical images, comprising: A construction module is used to construct a holographic transparent dam corresponding to the physical dam based on the initial BIM model of the internal structure of the physical dam; An acquisition module is used to acquire various three-dimensional physical field data of the physical dam based on the physical perception system; A fusion module, configured to fuse the three-dimensional physical field data into the polyhedron units in the holographic transparent dam to form holographic physical volume units; A visualization module is used to visualize the image of the holographic transparent dam including the holographic physical body unit to obtain a digital twin dam corresponding to the holographic physical image, in which the three-dimensional physical field data corresponding to each holographic physical body unit is holographically displayed.

[0013] The present invention also provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the computer program, a digital twin dam construction method based on holographic physical images as described above is implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, it implements any of the above-mentioned methods for constructing a digital twin dam based on holographic physical images.

[0015] The present invention also provides a computer program product, including a computer program, which, when executed by a processor, implements any of the above-mentioned methods for constructing a digital twin dam based on holographic physical images.

[0016] The present invention provides a method and system for constructing a digital twin dam based on holographic physical images. First, based on an initial BIM model of the physical dam's internal structure, a holographic transparent dam corresponding to the physical dam is constructed, serving as the foundation for the digital twin dam. This solves the problem of incomplete internal structure display in existing digital twin dam models and facilitates the subsequent integration of three-dimensional physical information. During the dam construction process, various different three-dimensional physical field data of the physical dam, acquired by the physical perception system, are integrated into the polyhedron units of the holographic transparent dam to form holographic physical volume units. This is then visualized to produce a digital twin dam that holographically displays three-dimensional physical field data, thus solving the problem of insufficient physical perception information in existing digital twin dam models. Furthermore, this process enables the display of multiple different three-dimensional physical field data, enabling the digital twin dam to display multiple different holographic physical images, improving visualization and interactive analysis capabilities and further supporting the safety and health diagnosis of the physical dam structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced one by one below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a flow chart of the method for constructing a digital twin dam based on holographic physical images provided by the present invention.

[0019] Figure 2 It is a visualization image of the original holographic transparent dam provided by the present invention.

[0020] Figure 3 This is a visualization diagram of an example effect of the digital twin dam provided by the present invention.

[0021] Figure 4 This is a visualization diagram of the holographic transparent dam after the polyhedron unit is divided into sections provided by the present invention.

[0022] Figure 5 It is an application schematic diagram of the diagnostic analysis system provided by the present invention.

[0023] Figure 6 It is a structural schematic diagram of the digital twin dam construction system based on holographic physical images provided by the present invention.

[0024] Figure 7 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] The following describes the digital twin dam construction method and system based on holographic physical images of the present invention with reference to the accompanying drawings. Figure 1 This is a flow chart of the method for constructing a digital twin dam based on holographic physical images provided by the present invention. Figure 1 As shown, the method includes the following steps 101 to 104.

[0027] Step 101: Based on the initial BIM model of the internal structure of the physical dam, a holographic transparent dam corresponding to the physical dam is constructed.

[0028] First, the embodiment of the present invention obtains the initial Building Information Modeling (BIM) of the internal structure of the physical dam, and can perform BIM modeling based on the design drawings of the physical dam or the dam drawings drawn by on-site measurements. According to the internal structure of the physical dam and the importance of the parts, the BIM model of the dam structure is graded and classified, and then different colors are set for the BIM model components of different levels according to the material properties based on the divided levels. Different transparency is set based on the importance and spatial position of the components to realize the display of the material and structural information of all components. Then, digital twin technology is used to construct a transparent dam with a holographic visual appearance and internal structure. The example effect diagram can be shown as follows Figure 2 shown.

[0029] Step 102: Acquire a variety of different three-dimensional physical field data of the physical dam according to the physical perception system.

[0030] The holographic transparent dam constructed in step 101 can serve as the model base for the digital twin dam. Subsequently, various 3D physical information can be incorporated into the holographic transparent dam based on actual needs. Therefore, it is necessary to obtain a variety of different 3D physical field data of the physical dam based on the physical perception system.

[0031] The three-dimensional physical field data involved in the embodiments of the present invention include: crack spatial distribution data, dam microseismic signals, formation resistivity, dam concrete structure three-dimensional velocity data, temperature field data, stress field data, and quantitative data of metal structure defects.

[0032] The physical sensing system uses appropriate physical sensing methods to collect physical parameters from the physical dam and map these parameters into three-dimensional space, generating a variety of three-dimensional physical field data. Three-dimensional physical field data is essentially spatially discrete point cloud data in the following format: point1(x1, y1, z1, a1, b1, c1, d1, ...). The x1, y1, and z1 columns represent the spatial coordinates of a single point in the three-dimensional physical field data, while the a1, b1, c1, and d1 columns represent the physical properties of the physical field data, such as acoustic waveform, wave velocity, magnetic field, resistivity, and temperature.

[0033] Step 103: Fuse the three-dimensional physical field data into the polyhedron units in the holographic transparent dam to form holographic physical volume units.

[0034] Next, the 3D physics data is integrated into the holographic transparent dam. The holographic transparent dam is composed of multiple polyhedral units, typically tetrahedrons or hexahedrons. Based on the spatial coordinates of the 3D physics data, the corresponding data points in the corresponding polyhedral units are determined and the 3D physics data is integrated into the corresponding data points. This integration process can be achieved using interpolation calculations. In this way, the polyhedral units integrated with the 3D physics data form holographic physics units.

[0035] Step 104: Visualize the image of the holographic transparent dam including the holographic physical volume unit to obtain a digital twin dam corresponding to the holographic physical image. The digital twin dam holographically displays the three-dimensional physical field data corresponding to each holographic physical volume unit.

[0036] In order to enable the holographic transparent dam to display various three-dimensional physical information more clearly, the holographic transparent dam including holographic physical body units will be visualized here to obtain a digital twin dam corresponding to the holographic physical image. The digital twin dam holographically displays the three-dimensional physical field data corresponding to each holographic physical body unit.

[0037] For example, Figure 3 As shown in Figure 1, when the 3D physical field data is derived from temperature parameters collected by a physical sensing system, the temperature data can be visualized as a temperature field during visualization, and the temperature field can be displayed as a heat map, clearly reflecting the temperature distribution of the physical dam. For another example, when the 3D physical field data is acoustic waveform data derived from cross-hole acoustic waveform parameters collected by a physical sensing system, cross-hole acoustic waves can detect the geometric structure of cracks in the physical dam. During visualization, the acoustic waveform data can be visualized as a crack structure, clearly reflecting the crack conditions of the physical dam.

[0038] In this embodiment of the present invention, a holographic transparent dam corresponding to the physical dam is constructed based on the initial BIM model of the physical dam's internal structure, serving as the foundation for the digital twin dam. This solves the problem of incomplete internal structure display in existing digital twin dam models and facilitates the subsequent integration of three-dimensional physical information. During the dam construction process, the various three-dimensional physical field data of the physical dam acquired by the physical perception system are integrated into the polyhedron units of the holographic transparent dam to form holographic physical volume units. This is then visualized to produce a digital twin dam that holographically displays three-dimensional physical field data, thus solving the problem of insufficient physical perception information in existing digital twin dam models. Furthermore, this process enables the display of a variety of different three-dimensional physical field data, enabling the digital twin dam to display a variety of different holographic physical images, improving visualization and interactive analysis capabilities and further supporting the safety and health diagnosis of the physical dam structure.

[0039] In some embodiments, the initial BIM model of the physical dam's internal structure is generated using triangular modeling technology, and the constructed digital twin dam model is also based on triangular surfaces, which limits the display of three-dimensional physical information. Therefore, when constructing the physical dam's model base, the present invention uses polyhedron units instead of triangular structures. The following details the process of constructing a holographic transparent dam corresponding to the physical dam based on the initial BIM model.

[0040] First, a polyhedron mesh is determined as a spatial 3D meshing unit. The initial BIM model is a triangular structured model. By dividing the initial BIM model using spatial 3D meshing units, the initial BIM model's composition can be reshaped. Depending on actual needs, the polyhedron mesh can include either a tetrahedron mesh or a hexahedron mesh.

[0041] Then, the initial BIM model of the internal structure of the solid dam is divided into multiple polyhedral units according to the spatial three-dimensional grid division unit. Here, when the spatial three-dimensional grid division unit is a tetrahedral grid, the polyhedral unit is a tetrahedral unit, and the hexahedral grid principle corresponds to a hexahedral unit.

[0042] Finally, according to the internal structure of the physical dam, the polyhedron units are combined into the corresponding holographic transparent dam, so as to ensure that the internal structure of the physical dam is not affected. The visualization effect of the holographic transparent dam composed of polyhedron units can be shown as follows: Figure 4 shown.

[0043] In the embodiment of the present invention, when constructing a holographic transparent dam, the original triangular surface structure is replaced by splitting tetrahedral units or hexahedral units, which can comprehensively and accurately express the three-dimensional physical field data and realize the refined three-dimensional entity modeling of the physical dam. This solves the problem that most digital twin dam models in the existing technology are based on triangular surface modeling technology, which makes it difficult to comprehensively and accurately express the three-dimensional data field.

[0044] In some embodiments, a digital twin dam can display a corresponding holographic physical image by incorporating corresponding three-dimensional physical field data. The three-dimensional physical field data and the holographic physical image have a one-to-one correspondence. Three-dimensional physical field data is obtained by a physical perception system using corresponding sensing methods to collect physical parameters. There are multiple and distinct types of these data. Therefore, in this embodiment of the present invention, there is a one-to-one correspondence between the sensing methods, physical parameters (corresponding to the three-dimensional physical field data), and the holographic physical image. As shown in Table 1 above, the physical perception system can use various sensing methods to collect corresponding physical data to obtain the corresponding three-dimensional physical field data, thereby constructing a digital twin dam corresponding to the physical holographic image to achieve the corresponding objectives for the physical dam. Therefore, various digital twin dams corresponding to holographic physical images can be constructed in this embodiment of the present invention. In this embodiment of the present invention, the holographic physical images include the following seven types, each of which is described below.

[0045] (1) Crack images used to determine the geometry of cracks in solid dams.

[0046] First, a dam crack survey was conducted using drone oblique photography, manual measurement, and other technical means to comprehensively determine the location, length, width, filling conditions, and environment of concrete dam cracks, and to collect historical crack data. Next, a cross-hole acoustic crack detection system was used to identify key dam concrete cracks by collecting corresponding acoustic waveforms to determine the corresponding crack spatial distribution. Combining the initial BIM model, the oblique photography model, and the key crack structure model, the system presented physical image information of the dam cracks at various scales, from macro to micro, including spatial location, topological structure, geometry, monitoring status, and historical information. At the macro level, the system achieved full spatial display of apparent cracks in the dam structure; at the meso level, it displayed the spatial distribution of key cracks; and at the micro level, it displayed the three-dimensional spatial distribution of key cracks and a table of crack attributes.

[0047] (2) Microseismic images used to perceive microseismic events of physical dams.

[0048] First, sensors are used to collect microseismic signals from the dam. The microseismic sensing system is used to locate, count and analyze vibration events in the dam structure, and an abnormal vibration information archive for the entire dam is established. By analyzing the waveform signals and extracting the source parameters, the corresponding three-dimensional physical field data is formed and integrated into the holographic transparent dam to realize the visualization of microseismic images.

[0049] (3) Basic images used to determine the location of the water-rich area of the physical dam.

[0050] First, the magnetoresistivity detection method is used to measure the dam's stratum resistivity to predict the current field inside the dam. Then, a resistivity imaging system is used to perform three-dimensional imaging. The imaging is used as three-dimensional temperature field data and integrated into the holographic transparent dam to achieve beam imaging visualization, which is used to determine the location and properties of the water-rich area of the physical dam.

[0051] (4) Wave velocity images used to determine defects inside the concrete of a solid dam.

[0052] First, an elastic wave CT system is used to perform elastic wave field testing to obtain the longitudinal wave velocity data of the concrete structure in key parts of the dam. Then, the three-dimensional velocity data of the dam concrete structure is constructed as three-dimensional physical field data, which is then integrated into the holographic transparent dam to realize the image visualization of the wave velocity image, which is used to predict internal defects of the concrete.

[0053] (5) Temperature images used to characterize the three-dimensional distribution of the temperature field inside the physical dam; Temperature sensors, temperature measuring optical fibers, infrared thermal imagers and other equipment are used to obtain discrete temperature data inside and on the surface of the dam. Three-dimensional spatial interpolation technology is used to form three-dimensional temperature field data, which are integrated into the holographic transparent dam to realize image visualization of temperature images, which are used to reveal the three-dimensional distribution of the temperature field inside the entire dam.

[0054] (6) Stress images used to characterize the three-dimensional distribution of stress fields inside the solid dam; Stress sensors are used to collect stress data, and then numerical simulation methods are used to fit the internal stress field data of the dam. As three-dimensional physical field data, it is integrated into the holographic transparent dam to realize image visualization of stress images, which is used to predict the three-dimensional distribution of the stress field inside the dam.

[0055] (7) Metal structure images used to identify defects in the metal structure of a solid dam.

[0056] Ultrasonic waves are emitted by an ultrasonic nondestructive testing system, and the metal structural defects of the dam are determined based on the returned ultrasonic waveforms. Quantitative parameters are evaluated based on the defects and integrated into the holographic transparent dam as three-dimensional physical field data to achieve image visualization of the metal structure image, which is used to determine the metal structural defects inside the physical dam.

[0057] There is a one-to-one correspondence between the perception means, physical parameters (corresponding to three-dimensional physical field data) and holographic physical images, as shown in Table 1 below: Table 1:

[0058] Based on the holographic transparent dam, the embodiment of the present invention uses a physical perception system to obtain a variety of different physical parameters according to actual needs, and obtains a variety of different three-dimensional physical field data of the physical dam, thereby constructing a digital twin dam with a variety of different holographic physical images, thereby realizing a "1+N" mode of holographic physical image digital twin dam construction framework, better supporting the safety and health diagnosis of the physical dam structure, and solving the problem of insufficient physical perception information in the existing technology of digital twin dam based on three-dimensional geometric structure and appearance modeling, supplemented by discrete monitoring data.

[0059] In some embodiments, fusing three-dimensional physical field data into polyhedral units in a holographic transparent dam to form holographic physical volume units includes: For each polyhedral unit in the holographic transparent dam, determining the geometric center coordinates of the polyhedral unit; Determine multiple three-dimensional physical field data in geometric center coordinates; Perform inverse distance weighted interpolation calculation on three-dimensional physical field data to obtain corresponding multi-physical field values; The multi-physical field values are assigned to corresponding polyhedral units to obtain holographic physical unit.

[0060] Specifically, the holographic transparent dam is composed of multiple polyhedral units. When performing the fusion of three-dimensional physical field data and the holographic transparent dam, the geometric center coordinates of each polyhedral unit are first determined. Then, in the polyhedral unit, the spatial index is used to search for multiple three-dimensional physical field data in the geometric center coordinates. Three-dimensional physical field data is point cloud data, which has three-dimensional spatial coordinate information and corresponding physical property information. Here, a coordinate area is divided with the geometric center coordinates as the center, and then the spatial index is used to search for the three-dimensional spatial coordinate information of the three-dimensional physical field data, and determine whether it is in the coordinate area. If it is in the coordinate area, it means that these three-dimensional physical field data need to be integrated into the polyhedral unit.

[0061] Next, the inverse distance weighted interpolation method is used to perform inverse distance weighted interpolation calculation on the three-dimensional physical field data to obtain the corresponding multi-physical field value, which is recorded as , the calculation formula is as follows: In the above formula, Represents the known point of the i-th three-dimensional physical field data in the polyhedral unit The observed value of represents the points to be interpolated in the polyhedral unit of the three-dimensional physical field data. It represents the Euclidean distance between the interpolation point and the known point of the 3D physical field data. P represents the preset power parameter, which is used to control the speed of distance attenuation.

[0062] The above formula can be used to calculate the interpolated value of each 3D physical field data as the corresponding multi-physics field value. Finally, the multi-physics field value is assigned to the corresponding polyhedral unit to obtain the holographic physical volume unit. Therefore, when visualizing the digital twin dam image, the corresponding 3D physical field data of each holographic physical volume unit can be displayed.

[0063] In an embodiment of the present invention, the three-dimensional physical field data obtained from the physical dam is calculated by interpolation to obtain multi-physical field values, which are then assigned to corresponding polyhedral units to obtain holographic physical body units, thereby realizing the fusion of three-dimensional physical information and twin models. When visualizing the holographic dam model, the visualization of three-dimensional physical information is also realized, which is more conducive to performing diagnostic analysis on the physical dam.

[0064] In some embodiments, after constructing a digital twin dam corresponding to a holographic physical image, the embodiments of the present invention also construct a diagnostic analysis system for the physical dam based on the digital twin dam.

[0065] During the image visualization process of the digital twin dam, the three-dimensional physical information corresponding to the physical dam can also be visualized. Based on this three-dimensional physical information, a targeted diagnostic and analysis system can be constructed. The construction method can be developed using the OpenGL visualization library. The constructed diagnostic and analysis system can also realize three-dimensional visualization, and support surface rendering and direct volume rendering technology to achieve holographic display of the physical property information of all polyhedral units.

[0066] When the digital twin dam is visualized, the diagnostic analysis system is started and visualized at the same time, such as Figure 5 As shown, the left side shows the image visualization of the digital twin dam, while the right side shows the visualization of the 3D physical information monitored by the diagnostic analysis system. In actual operation, the diagnostic analysis system diagnoses safety hazards in the physical dam and issues warnings when such hazards are detected. This safety hazard diagnosis and warning process can be automated, monitoring the 3D physical information of the digital twin dam in real time. Abnormal monitoring results indicate a safety hazard in the physical dam, prompting a timely warning. Alternatively, manual control can be enabled, with the diagnostic analysis system activated only when the 3D physical information of the digital twin dam is required to monitor the system, diagnose safety hazards in the physical dam, and issue warnings when such hazards are detected.

[0067] In an embodiment of the present invention, a diagnostic analysis system is designed based on a digital twin dam. This system can simulate and run synchronously with the digital twin dam, and, combined with a variety of visualized three-dimensional physical information, can diagnose and issue early warnings for potential safety hazards of the physical dam, effectively supporting the safety assurance of dam projects.

[0068] Furthermore, in an embodiment of the present invention, in order to achieve virtual-reality interaction with the user, the embodiment of the present invention is designed with multiple functions based on the visualization of the diagnostic analysis system. The functions of the diagnostic analysis system include at least one of the following: three-dimensional sectioning function, isosurface extraction function, volume measurement function, and image data fusion function, which are introduced one by one below.

[0069] First, the 3D sectioning function is used to monitor the internal structure of the physical dam. Users can use this function to drag slice planes of the digital twin dam in real time to observe the internal structure from different angles. Simultaneously displaying three views of the plane at any angle, such as three-view images, helps spatially locate the internal structure of the physical dam.

[0070] The second feature is the isosurface extraction function, which is used to extract surface models at specific thresholds from the holographic physical units of the digital twin dam. For example, when visualizing the digital twin dam using temperature images, the isosurface extraction function can be used to extract isothermal surfaces from the three-dimensional temperature field of the temperature image, providing a comprehensive understanding of the temperature inside the physical dam.

[0071] Next is the volume measurement function, which is used to calculate the volume of a preset area within a holographic physical volume unit and calculate the multi-physics field values of the preset area. The volume measurement function targets 3D physical field data. In the digital image dam, the volume of a preset area within the holographic physical volume unit can be calculated according to user needs, and the multi-physics field values of the preset area can be calculated. The multi-physics field values are specific values corresponding to multiple 3D physical field data. Based on these specific values, quantitative analysis of the physical data of the physical dam can be performed.

[0072] Finally, there's the image data fusion function, which is used to fuse the multi-physics field values in the holographic physical volume units before visualizing the digital twin dam image. A digital twin dam may have multiple holographic physical images for visualization. The image data fusion function allows the digital twin dam to display multiple holographic physical images simultaneously, as needed. For example, a crack image and a temperature image can be displayed simultaneously in the digital twin dam. However, when visualizing the image, it's necessary to fuse the multi-physics field values in the holographic physical volume units, specifically the multi-physics field values for temperature and cracks, before visualization. This allows for the simultaneous display of crack images and temperature images in the digital twin dam, enabling a comprehensive diagnosis of potential temperature and crack hazards in the physical dam.

[0073] The embodiment of the present invention is designed with multiple functions based on the visualization of the diagnostic and analysis system, realizing the intelligence of the diagnostic and analysis system. It can use the digital twin dam to control the physical information and engineering conditions of the actual dam in real time, not only realizing effective virtual-reality interaction with users, but also using multi-image visualization to realize comprehensive diagnosis of safety hazards of the actual dam.

[0074] The digital twin dam construction system based on holographic physical images provided by the present invention is described below. The digital twin dam construction system based on holographic physical images described below and the digital twin dam construction method based on holographic physical images described above can be referenced to each other.

[0075] like Figure 6 As shown, the digital twin dam construction system based on holographic physical images includes: a construction module 601, an acquisition module 602, a fusion module 603, and a visualization module 604. The construction module 601 is used to construct a holographic transparent dam corresponding to the physical dam based on the initial BIM model of the internal structure of the physical dam; the acquisition module 602 is used to obtain a variety of different three-dimensional physical field data of the physical dam based on the physical perception system; the fusion module 603 is used to fuse the three-dimensional physical field data into the polyhedral units in the holographic transparent dam to form holographic physical volume units; and the visualization module 604 is used to visualize the holographic transparent dam including the holographic physical volume units to obtain a digital twin dam corresponding to the holographic physical image, in which the three-dimensional physical field data corresponding to each holographic physical volume unit is holographically displayed.

[0076] It should be noted that the beneficial effects of the digital twin dam construction system based on holographic physical images here and the digital twin dam construction method based on holographic physical images mentioned above can correspond to each other, so the beneficial effects of the digital twin dam construction system based on holographic physical images will not be repeated here.

[0077] Figure 7 An example of a physical structure diagram of an electronic device is shown below. Figure 7As shown, the electronic device may include: a processor 710, a communications interface 720, a memory 730, and a communications bus 740. The processor 710, the communications interface 720, and the memory 730 communicate with each other via the communications bus 740. The processor 710 may call logic instructions in the memory 730 to execute a method for constructing a digital twin dam based on holographic physical images. The method includes: constructing a holographic transparent dam corresponding to the physical dam based on an initial BIM model of the internal structure of the physical dam; obtaining a variety of different three-dimensional physical field data of the physical dam based on a physical perception system; fusing the three-dimensional physical field data into polyhedral units in the holographic transparent dam to form holographic physical volume units; and visualizing the holographic transparent dam including the holographic physical volume units to obtain a digital twin dam corresponding to the holographic physical image, wherein the digital twin dam holographically displays the three-dimensional physical field data corresponding to each holographic physical volume unit.

[0078] Furthermore, the logic instructions in the aforementioned memory 730 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product, stored in a storage medium, includes instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0079] On the other hand, the present invention also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the digital twin dam construction method based on holographic physical images provided by the above methods, the method including: constructing a holographic transparent dam corresponding to the physical dam based on the initial BIM model of the internal structure of the physical dam; obtaining a variety of different three-dimensional physical field data of the physical dam based on the physical perception system; fusing the three-dimensional physical field data into the polyhedral units in the holographic transparent dam to form a holographic physical body unit; visualizing the holographic transparent dam including the holographic physical body unit to obtain a digital twin dam corresponding to the holographic physical image, wherein the digital twin dam holographically displays the three-dimensional physical field data corresponding to each holographic physical body unit.

[0080] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the digital twin dam construction method based on holographic physical images provided by the above-mentioned methods, the method comprising: constructing a holographic transparent dam corresponding to the physical dam based on an initial BIM model of the internal structure of the physical dam; obtaining a variety of different three-dimensional physical field data of the physical dam based on a physical perception system; fusing the three-dimensional physical field data into the polyhedral units in the holographic transparent dam to form a holographic physical body unit; visualizing the holographic transparent dam including the holographic physical body unit to obtain a digital twin dam corresponding to the holographic physical image, wherein the digital twin dam holographically displays the three-dimensional physical field data corresponding to each holographic physical body unit.

[0081] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0082] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a necessary general-purpose hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods described in each embodiment or certain portions of the embodiments.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for constructing a digital twin dam based on holographic physical images, characterized in that: include: Based on the initial BIM model of the internal structure of the physical dam, a holographic transparent dam corresponding to the physical dam is constructed; Acquire various three-dimensional physical field data of the physical dam based on the physical perception system; fusing the three-dimensional physical field data into the polyhedron units in the holographic transparent dam to form holographic physical volume units; The holographic transparent dam including the holographic physical unit is image-visualized to obtain a digital twin dam corresponding to the holographic physical image, in which the three-dimensional physical field data corresponding to each holographic physical unit is holographically displayed.

2. The method for constructing a digital twin dam based on holographic physical images according to claim 1 is characterized in that: The method of constructing a holographic transparent dam corresponding to the physical dam based on the initial BIM model of the internal structure of the physical dam includes: Determining a polyhedral grid as a spatial three-dimensional grid division unit, wherein the polyhedral grid includes a tetrahedral grid or a hexahedral grid; Dividing the initial BIM model of the internal structure of the solid dam into a plurality of polyhedral units according to the spatial three-dimensional grid division unit; According to the internal structure of the physical dam, the polyhedron units are combined into the corresponding holographic transparent dam.

3. A digital twin dam construction method and system based on holographic physical images, characterized in that: The three-dimensional physical field data corresponds one-to-one to the holographic physical image; The holographic physical image includes at least one of the following: Crack imaging for determining crack geometry in physical dams; Microseismic images used to perceive microseismic events at physical dams; Basic imagery for determining the location of the water-rich area of the physical dam; Wave velocity images used to identify defects within concrete dams; Temperature images used to characterize the three-dimensional distribution of the temperature field inside the physical dam; Stress imaging used to characterize the three-dimensional distribution of stress fields inside a solid dam; Metal structure imaging used to identify defects in the metal structure of a solid dam.

4. The method for constructing a digital twin dam based on holographic physical images according to claim 1 is characterized in that: The step of fusing the three-dimensional physical field data into the polyhedron units in the holographic transparent dam to form holographic physical volume units includes: For each polyhedral unit in the holographic transparent dam, determining the geometric center coordinates of the polyhedral unit; Determine a plurality of the three-dimensional physical field data in the geometric center coordinates; Performing inverse distance weighted interpolation calculation on the three-dimensional physical field data to obtain corresponding multi-physical field values; The multi-physical field values are assigned to corresponding polyhedral units to obtain holographic physical unit.

5. The method for constructing a digital twin dam based on holographic physical images according to claim 1 is characterized in that: The method further comprises: Constructing a diagnostic analysis system for the physical dam based on the digital twin dam; The physical dam is diagnosed for potential safety hazards based on the diagnostic analysis system, and an early warning is issued when potential safety hazards are diagnosed in the physical dam.

6. The method for constructing a digital twin dam based on holographic physical images according to claim 1 is characterized in that: The functions of the diagnostic analysis system include at least one of the following: 3D sectioning function, used to monitor the internal structure of the physical dam; Isosurface extraction function, used to extract surface models with specific thresholds from the holographic physical volume elements of the digital twin dam; A volume measurement function is used to calculate the volume of a preset area in the holographic physical unit and to count the multi-physical field values of the preset area; The image data fusion function is used to fuse the multi-physical field values in the holographic physical unit and then visualize it when visualizing the digital twin dam image.

7. A digital twin dam construction system based on holographic physical images, characterized by: include: A construction module is used to construct a holographic transparent dam corresponding to the physical dam based on the initial BIM model of the internal structure of the physical dam; An acquisition module is used to acquire various three-dimensional physical field data of the physical dam based on the physical perception system; A fusion module, configured to fuse the three-dimensional physical field data into the polyhedron units in the holographic transparent dam to form holographic physical volume units; A visualization module is used to visualize the image of the holographic transparent dam including the holographic physical body unit to obtain a digital twin dam corresponding to the holographic physical image, in which the three-dimensional physical field data corresponding to each holographic physical body unit is holographically displayed.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, it implements the digital twin dam construction method based on holographic physical images as described in any one of claims 1 to 6.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for constructing a digital twin dam based on holographic physical images as described in any one of claims 1 to 6 is implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the method for constructing a digital twin dam based on holographic physical images as described in any one of claims 1 to 6 is implemented.

Images