Hydropower station data and three-dimensional scene mapping method based on digital twinborn body

Abstract

The invention discloses a hydropower station data and three-dimensional scene mapping method based on a digital twinborn body. The method comprises the following steps: formulating a hydropower station digital twinborn body coding system; establishing two model mapping methods of automatic mapping based on model coding and hitching association based on empirical logic, and establishing a mapping system for associating the digital twin of the hydropower station with a visual model and data; establishing mapping between the monitoring and detection data and the digital twin of the hydropower station, including establishing a measuring point coding system and analytic mapping based on measuring point coding; and establishing a shared reference of the mapping relationship. And automatic association of the twin and the measuring point data is realized through the unique code. According to the automatic association method of the visual model and the operation data based on the digital twinborn body, the time and labor cost can be reduced, the efficiency and the quality of mutual mapping of model data are improved, and rapid fusion linkage of dynamic operation data and twinborn scenes of a hydropower station can be realized.

Description

Technical Field

[0001] The present invention relates to the field of visual management technology, and in particular to a method for mapping hydropower station data and three-dimensional scenes based on digital twins. Background Art

[0002] Although significant progress has been made in the current field of digital twin technology, especially in data mapping and visualization of building spaces, there are still many challenges in the comprehensive application of complex industrial facilities such as hydropower stations. Most existing technologies rely on manual association to achieve the mutual mapping of visualization models and business data. This method is particularly insufficient when dealing with scenarios such as hydropower stations that contain a large amount of safety monitoring and equipment monitoring data.

[0003] An important aspect of digital twins is to establish a mapping or connection between digital and three-dimensional model data. The data that need to be connected include equipment data, appearance data and many other aspects.

[0004] The prior art also has a scheme for mapping three-dimensional models. For example, Chinese patent document CN116305356A discloses a method and system for mapping three-dimensional models and data of digital twins of electrical equipment, which can not only integrate dynamic information such as real-time panoramic monitoring data of online physical electrical equipment into the three-dimensional digital twin model of electrical equipment, but also identify the model by name in the three-dimensional digital twin model, and establish a real one-to-one mapping relationship with the digital model, so as to accurately display the current status of physical electrical equipment such as abnormalities on the web page, thereby realizing the real-time perception function of the digital twin system. The dynamic information of online physical electrical equipment can be integrated into the three-dimensional digital twin model of electrical equipment.

[0005] However, there are the following defects in the existing digital twin technology:

[0006] 1. Manual association is labor-intensive and error-prone. As a complex industrial system, the operation of a hydropower station involves numerous devices, pipelines, sensors, etc. Real-time monitoring and recording of these data sources are crucial to the safe and efficient operation of the hydropower station. However, existing technologies mostly manually associate various types of data with visualization models one by one. This process is not only labor-intensive, but also prone to errors due to human factors, increasing the risk of inaccurate data.

[0007] 2. High time and labor costs. With the expansion of the scale of hydropower stations and the improvement of their intelligence, the amount of data that needs to be monitored and managed has increased dramatically. The manual association method cannot effectively cope with the growth of this amount of data, resulting in the entire mapping process being time-consuming and labor-intensive, which seriously restricts the efficiency of hydropower station operation and maintenance management.

[0008] 3. The automatic association method has great limitations. Although an automatic mapping method based on Beidou grid location code has been proposed and applied to data mapping of building space, this method has obvious limitations in industrial scenarios such as hydropower stations. It mainly focuses on the location coding of the exterior of the building or the overall space, and cannot go deep into the level of facilities and equipment inside the building to achieve refined and dynamic mutual mapping of visualization models and business data. Therefore, this method cannot support the interactive linkage of three-dimensional scenes of hydropower stations and related applications of digital twins, and it is difficult to meet the actual needs of hydropower station operation and maintenance management.

[0009] 4. Lack of unified mapping standards and specifications. There are differences in equipment types, layouts, monitoring data formats, etc. between different hydropower stations. Lack of unified mapping standards and specifications makes it difficult for existing technologies to achieve seamless docking and interoperability between different hydropower stations. This not only increases the difficulty of technical implementation, but also limits the widespread application of digital twin technology in the field of hydropower stations. Summary of the invention

[0010] The technical problem to be solved by the present invention is to provide a method for mapping hydropower station data and three-dimensional scenes based on digital twins. Aiming at the application scenarios of digital twin hydropower stations, a method and system for mapping hydropower station data and three-dimensional scenes are constructed. The visualization model or model decomposition file of the hydropower station is uploaded to the mapping system, and the twin structure tree of the hydropower station is obtained by parsing according to the coding rules of the structural equipment, and the automatic association between the twin and the model is realized through unique coding.

[0011] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0012] A method for mapping hydropower station data and three-dimensional scenes based on digital twins. The mapping method is based on the digital twin of the hydropower station, which connects the data and visualization models of different stages of the hydropower station structure and equipment in series;

[0013] The mapping method includes the following steps:

[0014] Based on the reference requirements and classification of hydropower stations, a hierarchical classification method for hydropower station structures and equipment is developed to form a digital twin coding system for hydropower stations;

[0015] Establish two model mapping methods: automatic mapping based on model coding and hook association based on experience logic, and establish a mapping system for the digital twin of the hydropower station and the visualization model and data association;

[0016] Establish a mapping between monitoring and detection data and the digital twin of the hydropower station, including establishing a measurement point coding system and analytical mapping based on measurement point coding;

[0017] Create a shared reference to the mapping relationship.

[0018] The engineering coding of the above-mentioned hydropower station digital twin coding system consists of four levels: system code, building code, function code, and element code; the equipment coding consists of four levels: plant code, system code, equipment code, and component code.

[0019] The above-mentioned automatic mapping method based on model encoding is:

[0020] According to the digital twin coding system of the hydropower station, the BIM model of the structural equipment of the hydropower station is encoded; after uploading the BIM model to the mapping system, the system first separates the model attribute information and model geometric data through lightweight tools, and then automatically parses the hierarchical structure of the model according to the coding rules, that is, the structure tree of the hydropower station twin. The structure tree, model geometric data, and model attribute information of the hydropower station twin are associated through unique coding to achieve a one-to-one mapping between the model and the twin object.

[0021] The above-mentioned mapping method of the hook association based on empirical logic is:

[0022] The unique coding and attribute information of each structural equipment of the hydropower station is uploaded to the mapping system in the form of a file. The system automatically generates a structure tree of the hydropower station twin according to the coding rules. After the model is uploaded to the mapping system, the component in the twin structure tree is selected and associated with the model corresponding to the component to achieve a one-to-one mapping of the hydropower station twin object, model data, and attribute information.

[0023] The specific steps of the above-mentioned automatic mapping method based on model encoding are:

[0024] S1. Use modeling software to perform BIM modeling of the hydropower station, enter the attribute information of the model components into the software, and assign a unique identification code to each component;

[0025] S2. After completing BIM modeling, property entry and coding setting, a BIM model file is formed;

[0026] S3, upload the BIM model to the mapping system and perform lightweight processing on the model;

[0027] S4. Use lightweight tools to read and separate geometric data and non-geometric data in the BIM model by separating digital and analog data;

[0028] S5. The lightweight model retains complete geometric data and unique codes, while non-geometric data is stored in a database; there is a one-to-one correspondence between the unique code in the lightweight model and the unique code in the attribute information database, and the lightweight model and attribute information can be associated through the unique code;

[0029] S6. The mapping system presets the coding rules for hydropower station engineering and equipment categories in advance;

[0030] S7. According to the coding rules, the mapping system automatically parses and obtains the hierarchical structure of the lightweight model, that is, the structure tree of the twin of the hydropower station;

[0031] S8. Since the lightweight model and attribute information are associated through a unique code, after selecting any component of the hydropower station in the structure tree, the system can locate and highlight the lightweight model of this component in the three-dimensional scene, query the attribute information of the component, and realize the interactive linkage between the BIM model of the hydropower station and the twin structure tree.

[0032] The specific steps of the above-mentioned mapping method of the hook association based on empirical logic are as follows:

[0033] S1. Create a hydropower station structure decomposition file, assign a unique code to each engineering equipment according to the hydropower station twin coding system, and fill in the coding information and attribute information in the file;

[0034] S2. Upload the structure decomposition file to the mapping system. According to the coding rules, the system automatically generates a structure tree of the hydropower station twin;

[0035] S3, storing the attribute information of the engineering equipment in a database, and associating the attribute information with the structure tree through a unique code;

[0036] S4. Upload the 3D model and GIS model related to the hydropower station to the mapping system to realize the lightweight processing of the model; S5. Select the component in the twin structure tree in the system and associate it with the lightweight model corresponding to the component;

[0037] S6. After the association is completed, select any component of the hydropower station in the structure tree. The system can locate and highlight the lightweight model of this component in the three-dimensional scene, query the attribute information of the component, and realize the interactive linkage between the three-dimensional model of the hydropower station, the GIS model and the twin structure tree.

[0038] The above-mentioned measuring point coding system includes: on the basis of the digital twin coding system of the hydropower station, adding the monitoring type code and the measuring point sequence code to form a combined coding mode of "twin code-monitoring type-measuring point number".

[0039] The above-mentioned analytical mapping based on measurement point coding includes:

[0040] S1. Import the measuring point information into the coding tool, add twin codes to the measuring points according to the monitored objects, add type codes to the measuring points according to the measuring point types, and add sequence codes to the same type of monitoring points;

[0041] S2. The mapping system presets the coding rules of the hydropower station measurement points in advance;

[0042] S3, upload the measuring point information to the mapping system. According to the measuring point code, the system automatically parses the twin object to which the measuring point belongs, as well as the type and quantity of the measuring point;

[0043] S4. Since there is a many-to-one relationship between the measuring points of the hydropower station and the twin objects, the system can directly connect each measuring point to the corresponding twin structure tree to form a twin monitoring tree for the hydropower station;

[0044] S5. After automatic mounting, the mounting relationship between the measuring point and the twin structure tree can be manually adjusted;

[0045] S6. The attribute information and time series data of the measuring points are stored in a structured database and associated with the monitoring tree through a unique measuring point code;

[0046] S7. In the three-dimensional scene constructed by the visualization model, the spatial distribution position of the measuring point is marked according to the measuring point coordinates, and is associated with the monitoring tree through the unique measuring point code;

[0047] S8. After the association is completed, select any measuring point of the hydropower station in the monitoring tree. The system locates and highlights this measuring point and the visual model of the component to which this measuring point belongs in the three-dimensional scene, queries the measuring point attribute information and monitoring data, and realizes the interactive linkage between the hydropower station twin and the monitoring point.

[0048] The shared references of the above mapping relationships include:

[0049] S1. After completing the mapping between the digital twin of the hydropower station and the visualization model and monitoring data, share this mapping relationship with the business personnel who need to use it;

[0050] S2. Check the twin data directory in the system, including the association information between the twin and model data, model attribute information, measurement point attribute information, monitoring data, etc. Business personnel can retrieve the required twin information through keyword and condition query;

[0051] S3. Import the authorized model code into the mapping system. The system can automatically generate the mapping relationship between the authorized model and the twin based on the latest version of the association information.

[0052] S4. Import the authorized measurement point code into the mapping system. The system can automatically generate the mapping relationship between the authorized measurement point and the twin according to the latest version of the association information;

[0053] S5. Relevant personnel directly use the associated information, or make adjustments based on the existing associated information, or reconnect the digital twin of the hydropower station with the visualization model and monitoring data as needed, and manage the reconnected or adjusted associated information as another version.

[0054] The above visualization model is the display carrier of the hydropower station digital twin and needs to be attached to a decomposed object of the twin;

[0055] The monitoring data is the driver of the digital twin of the hydropower station and needs to be attached to a decomposed object of the twin.

[0056] The present invention provides a method for mapping hydropower station data and three-dimensional scenes based on digital twins. Aiming at the application scenarios of digital twin hydropower stations, a method and system for mapping hydropower station data and three-dimensional scenes are constructed. The visualization model or model decomposition file of the hydropower station is uploaded to the mapping system, and the twin structure tree of the hydropower station is obtained by parsing according to the coding rules of the structural equipment, and the twin is automatically associated with the model through a unique code; the measuring points of the hydropower station are encoded by a coding tool, and the measuring point information is uploaded to the mapping system. The measuring points are attached to the twin structure tree of the hydropower station according to the measuring point coding rules, and the twin is automatically associated with the measuring point data through a unique code. It can reduce time and labor costs, improve the efficiency and quality of mutual mapping of model data, and help to realize the rapid integration and linkage of the dynamic operation data of the hydropower station and the twin scene. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0058] Figure 1 This is a flow chart of the automatic mapping method based on model coding of the present invention;

[0059] Figure 2 This is a flow chart of the joint association mapping method based on empirical logic of the present invention;

[0060] Figure 3 This is a flow chart of the analytical mapping method based on measurement point coding. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following content will systematically and completely describe the specific technical solutions of the present invention in combination with the drawings provided according to the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0062] In order to realize the fusion and interaction of hydropower station operation-related data and twin scenes, it is necessary to establish a data and three-dimensional scene association, mapping method and system based on digital twins; the core of this method is to take the hydropower station digital twin as the center, connect its structure, data and visualization models of different stages of equipment in series, and propose general methods such as automatic mapping based on model coding, mapping based on measurement point coding analysis, and association based on empirical logic by analyzing the data model fusion needs under different business scenarios. A mapping system for digital twins and visualization models and data association is established to improve the degree of integration of hydropower station operation data and twin scenes and enhance the interactive capability of virtual-reality mapping.

[0063] In terms of the coding system, the present invention clarifies the hierarchical classification method of hydropower station structures and equipment based on application requirements and classification standards, and forms a digital twin coding system for hydropower stations; among them, the digital twin coding of engineering types consists of four levels: system code, building code, function code, and element code; the digital twin coding of equipment types consists of four levels: plant code, system code, equipment code, and component code.

[0064] In terms of model mapping, the present invention proposes two methods: automatic mapping based on model coding and hook association based on experience logic.

[0065] (1) Automatic mapping method based on model encoding

[0066] This method is applicable to BIM models; according to the digital twin coding system of hydropower stations, the BIM model of hydropower station structural equipment is encoded. After uploading the model to the mapping system, the system first separates the model attribute information and model geometry data through lightweight tools, and then automatically parses the model's hierarchical structure according to the coding rules, that is, the structure tree of the hydropower station twin; the structure tree, model geometry data, and model attribute information of the hydropower station twin are associated through unique coding to achieve a one-to-one mapping between the model and the twin object.

[0067] The specific implementation process is as follows: when creating the BIM model of the hydropower station through the modeling software, add a LID coding attribute with a hierarchical concept to each component; LID is determined according to the digital twin coding system of the hydropower station, including two major categories of engineering and equipment, and consists of four levels, of which levels 2, 3, and 4 all contain type coding and sequence coding; based on the pre-defined coding rules and automatic coding algorithm of the modeling software, the type coding of all components in the model is identified and recorded, and each component of the same type is automatically assigned a unique sequence code in the form of a serial number; through the filter encapsulated by the modeling software API, the geometric data and coding attributes of the BIM model are extracted and stored in XML file format. In the Three.js framework, the XML file loading library loadxmldoc.js is created in JavaScript language, and the library is called to load the XML file, and the twin structure tree is generated according to the LID hierarchical nodes; the geometry array and attribute array are declared in JS to store the data information of each twin node. Through the element call function, all nodes in the twin structure tree are looped through to obtain the geometric information and coding attributes of all components of the BIM model, and stored in each array in the form of Object objects, so as to realize the automatic association of the twin structure tree, model geometric data, and model attribute information. When performing twin applications, through the element call function, the node code of the twin structure tree is used as the index to traverse the geometric array and attribute array to obtain relevant data, so as to realize the interactive linkage between the BIM model and the twin structure tree.

[0068] (2) Linking and association method based on empirical logic

[0069] This method is applicable to three-dimensional models and GIS models. The unique codes and attribute information of each structural equipment of the hydropower station are uploaded to the mapping system in the form of files, and the system automatically generates a structure tree of the hydropower station twin according to the coding rules. After uploading the model to the mapping system, the component in the twin structure tree is selected and associated with the model corresponding to the component to realize a one-to-one mapping of the hydropower station twin object, model data, and attribute information.

[0070] The specific implementation process is as follows: when uploading the structural decomposition information of the hydropower station in the form of a file, a unique element ID is assigned to each hydropower station component, and the parent-child hierarchy of each component is clarified. The corresponding model elements are subsequently identified and referenced by the element ID; the element ID is formulated according to the digital twin coding system of the hydropower station, including two major categories: engineering and equipment, and composed of four levels. After the file is uploaded to the system, the element ID and attribute information of the component are placed in the attribute table. The element ID of a component corresponds to multiple attribute information; the element ID is analyzed in combination with the parent and child nodes defined in the file, and the twin structure tree is automatically generated by recursive function using Java language; after the 3D model is uploaded to the system, the model file is assigned a unique identification number through the UUID class using Java language and stored in the model table; after manually specifying the model file and the twin node, the model number and element ID are extracted from the model table and the attribute table respectively, and a mapping table of the model number and element ID is established. The element ID is used to bind the 3D model, attribute information and twin node; when performing twin applications, the element ID of the twin structure tree is used as the index to traverse the attribute table and model table to obtain relevant data, so as to realize the interactive linkage between the BIM model and the twin structure tree.

[0071] In terms of data mapping, the present invention proposes a parsing mapping method based on measuring point coding; based on the digital twin coding system of the hydropower station, a combined coding mode of "twin code-monitoring type-measuring point number" is established; a unique code is assigned to the measuring point of the hydropower station through a coding tool, and after uploading the measuring point to the mapping system, the system automatically parses the twin object to which the measuring point belongs according to the coding rules, and hangs the measuring point on the corresponding twin structure tree, thereby realizing a one-to-many mapping between the twin object of the hydropower station and the measuring point.

[0072] In terms of mapping applications, the mapping relationship between digital twins and visualization models and monitoring data can be applied to twin functions such as model positioning interaction and display of spatial distribution of measuring points. By selecting any component of the hydropower station in the twin structure tree, the system can locate and highlight the lightweight model and related measuring points of this component in the three-dimensional scene, query attribute information and monitoring data, and realize the integration and linkage of the hydropower station visualization model, safety monitoring data, equipment monitoring data and the twin structure tree.

[0073] 1. Establish a digital twin coding system for hydropower stations

[0074] Based on application requirements and classification standards, the structures and equipment of the hydropower station are graded and classified to form a digital twin coding system for the hydropower station.

[0075] The digital twins of hydropower stations are mainly divided into engineering and equipment categories.

[0076] (1) Engineering

[0077] Engineering subjects include hydraulic engineering, architecture, roads and bridges, water supply and drainage, and geology.

[0078] The digital twin coding of engineering consists of four levels: system code, building code, function code, and element code, as shown in the following table:

[0079] The system code Q is used to identify the type of building system and consists of two digits, including water retaining system, flood discharge and energy dissipation system, water diversion and power generation system, navigation and dam crossing system, water intake system, etc.

[0080] Building Code R 1 R 2 Used to identify the type of building, consisting of 2 letters. 1 Represents the first-level classification of buildings. For example, water retaining systems can be divided into gravity dams, arch dams, earth-rock dams, etc.; R 2 It is expressed as the secondary classification of buildings. For example, gravity dams can be divided into solid gravity dams, wide-slit gravity dams, hollow gravity dams, etc.

[0081] Building Code R N Buildings of the same type are numbered with two digits ranging from 01 to 99.

[0082] Function code W 1 Used to identify the functional type of a building, consisting of one letter. For example, a dam-type plant can be divided into the main unit room section, installation room, auxiliary plant, plant drainage, plant road, etc.

[0083] Function code W N Buildings with the same function are numbered with two digits ranging from 01 to 99.

[0084] Element code Y 1 Y 2 Used to identify the type of civil engineering elements, consisting of two letters. 1 Represents the major categories of civil engineering, for example, the main body of the dam section can be divided into anti-seepage and reinforcement, water retaining structure, drainage structure, water stop and inter-slit filling, etc.; Y 2 Represented as a subcategory of civil engineering, for example, drainage structures can be divided into drainage holes, drainage pipes, drainage holes, etc.

[0085] Element code Y N The same civil engineering element is numbered with 4 digits ranging from 001 to 999.

[0086] (2) Equipment

[0087] Equipment objects include hydraulic machinery, primary electrical, secondary electrical, HVAC, water supply and drainage, and metal structure.

[0088] The digital twin code of equipment consists of four levels: factory code, system code, equipment code, and component code, as shown in the following table:

[0089] The plant-wide code G is used to identify power plant units and common system equipment; power plant units consist of two digits; system equipment common to multiple units consists of two letters, which can be agreed upon depending on the situation.

[0090] System code F 1 F 2 F 3 Used to identify the system type, consisting of three letters; F1 can be represented by power grid and distribution system, power output and factory power, instrumentation and control equipment, drainage system, water delivery system, host device, technical water supply system, public auxiliary system, auxiliary system, centralized control center and other systems; F 2 In F 1 The main unit can be further divided into turbine system, generator system, etc. 3 In F 2 The type can be further refined, for example, the turbine system can be divided into turbine, water inlet valve, governor, etc.

[0091] System code F N Systems of the same type are numbered using a two-digit number ranging from 01 to 99.

[0092] Equipment Code E 1 E 2 Used to identify different device types in the same system, consisting of two letters; E 1 It can represent mechanical equipment, measuring equipment, electrical equipment, etc. 2 In E 1 The types can be further refined, for example, turbine mechanical equipment can be divided into casing components, rotating components, bearing components, etc.

[0093] Equipment Code E N Devices of the same type are numbered using a three-digit number ranging from 001 to 999.

[0094] Part Code B 1 B 2 Used to mark different component types under the same equipment, consisting of 2 letters. 1 It can represent mechanical parts, instrumentation and control parts, electrical parts, etc. 2 In B 1The types can be further refined, for example, the electrical components of turbines can be divided into protection devices, signal devices, switch devices, etc.

[0095] Part Code B N Components of the same type are numbered with two digits ranging from 01 to 99.

[0096] 2. Mapping of the visualization model and the digital twin of the hydropower station

[0097] The visualization model is the display carrier of the digital twin of the hydropower station and needs to be attached to a decomposed object of the twin. There are two ways to attach the visualization model to the hydropower station twin: one is automatic mapping based on model coding, and the other is attachment association based on empirical logic.

[0098] (1) Automatic mapping based on model encoding

[0099] S1. Use professional modeling software such as Revit, Bentley, and Catia to perform BIM modeling of the hydropower station, enter the attribute information of the model components in the software, and assign a unique identification code to each component. The establishment of the identification code refers to the coding system of the hydropower station twin.

[0100] S2. After completing BIM modeling, property entry and coding setting, a BIM model file is formed.

[0101] S3. Upload the BIM model to the mapping system and perform lightweight processing on the model.

[0102] S4. Use lightweight tools to read and separate geometric data and non-geometric data in the BIM model through digital-analog separation.

[0103] S5. The lightweight model retains complete geometric data and unique codes, while non-geometric data such as model component attributes are stored in a database. There is a one-to-one correspondence between the unique code in the lightweight model and the unique code in the attribute information database, and the lightweight model and attribute information can be associated through the unique code.

[0104] S6. The mapping system presets the coding rules for hydropower station engineering and equipment categories in advance.

[0105] S7. According to the coding rules, the mapping system automatically parses and obtains the hierarchical structure of the lightweight model, that is, the structure tree of the twin of the hydropower station.

[0106] S8. Since the lightweight model and attribute information are associated through a unique code, after selecting any component of the hydropower station in the structure tree, the system can locate and highlight the lightweight model of this component in the three-dimensional scene, query the attribute information of the component, and realize the interactive linkage between the BIM model of the hydropower station and the twin structure tree.

[0107] (2) Linking based on empirical logic

[0108] S1. Create a hydropower station structure decomposition file, assign a unique code to each engineering equipment according to the hydropower station twin coding system, and fill in the coding information and attribute information in the file.

[0109] S2. Upload the structure decomposition file to the mapping system. According to the coding rules, the system automatically generates a structure tree of the hydropower station twin.

[0110] S3. Store the attribute information of the engineering equipment in a database, and associate the attribute information with the structure tree through a unique code.

[0111] S4. Upload the 3D model (max model / UE model, etc.) and GIS model (oblique photography / terrain image, etc.) related to the hydropower station to the mapping system to achieve lightweight processing of the model.

[0112] S5. In the system, a component (at any level) in the twin structure tree is selected and associated with the lightweight model corresponding to the component.

[0113] S6. After the association is completed, select any component of the hydropower station in the structure tree. The system can locate and highlight the lightweight model of this component in the three-dimensional scene, query the attribute information of the component, and realize the interactive linkage between the three-dimensional model of the hydropower station, the GIS model and the twin structure tree.

[0114] 3. Mapping of monitoring data and digital twins of hydropower stations

[0115] Monitoring data is the core driver of the digital twin of a hydropower station and needs to be attached to a decomposed object of the twin. The attachment of monitoring data to the twin of a hydropower station is mainly achieved through analytical mapping based on measuring point coding.

[0116] (1) Measurement point coding system

[0117] On the basis of the digital twin coding system of the hydropower station, the monitoring type code and measuring point sequence code are added to form a combined coding mode of "twin code-monitoring type-measuring point number".

[0118] Type code M 1 M 2 It is used to identify the monitoring object of hydropower station engineering equipment, and consists of two letters. For engineering components, M 1 It can be expressed as displacement, seepage, stress-strain, temperature, etc. For equipment components, M 1 Can be expressed as vibration, swing, temperature, etc.; M 2 In M 1The types can be further refined, for example, displacement can be divided into X-axis displacement, Y-axis displacement and Z-axis displacement, and vibration can be divided into horizontal vibration and vertical vibration.

[0119] Sequence code C N Measuring points of the same type are numbered with three digits ranging from 001 to 999.

[0120] (2) Analytical mapping based on measurement point coding

[0121] S1. Import the measuring point information into the coding tool, add twin codes to the measuring points according to the monitored objects, add type codes to the measuring points according to the measuring point types, and add sequence codes to the same type of monitoring points.

[0122] S2. The mapping system presets the coding rules of the hydropower station measurement points in advance.

[0123] S3. Upload the measuring point information to the mapping system. According to the measuring point code, the system automatically parses the twin object to which the measuring point belongs, as well as the type and quantity of the measuring point.

[0124] S4. Since there is a many-to-one relationship between the measuring points of the hydropower station and the twin objects, the system can directly connect each measuring point to the corresponding twin structure tree to form a twin monitoring tree for the hydropower station.

[0125] S5. After automatic mounting, the mounting relationship between the measuring point and the twin structure tree can be manually adjusted.

[0126] S6. The attribute information and time series data of the measuring points are stored in a structured database and associated with the monitoring tree through a unique measuring point code.

[0127] S7. In the three-dimensional scene constructed by the visualization model, the spatial distribution position of the measuring point is marked according to the measuring point coordinates, and is associated with the monitoring tree through the unique measuring point code.

[0128] S8. After the association is completed, select any measuring point of the hydropower station in the monitoring tree. The system can locate and highlight this measuring point and the visual model of the component to which this measuring point belongs in the three-dimensional scene, query the measuring point attribute information and monitoring data, and realize the interactive linkage between the hydropower station twin and the monitoring point.

[0129] 4. Shared application of mapping relationship

[0130] S1. After completing the mapping between the digital twin of the hydropower station and the visualization model and monitoring data, this mapping relationship can be shared with relevant personnel.

[0131] S2. The twin data directory can be viewed in the system, including the association information between the twin and the model data, model attribute information, measurement point attribute information, monitoring data, etc. Business personnel can quickly retrieve the required twin information through keyword and conditional queries.

[0132] S3. Import the authorized model code into the mapping system. The system can automatically generate the mapping relationship between the authorized model and the twin based on the latest version of the associated information.

[0133] S4. Import the authorized measurement point code into the mapping system. The system can automatically generate the mapping relationship between the authorized measurement point and the twin based on the latest version of the associated information.

[0134] S5. Relevant personnel can directly use the associated information, or make adjustments based on the existing associated information. They can also re-attach the digital twin of the hydropower station to the visualization model and monitoring data as needed, and manage the re-attached or adjusted associated information as another version.

Claims

1. A method for mapping hydropower station data and three-dimensional scenes based on digital twins, characterized in that: The mapping method is based on the digital twin of the hydropower station, which connects the data and visualization models of different stages of the hydropower station structure and equipment in series; The mapping method includes the following steps: Based on the reference requirements and classification of hydropower stations, a hierarchical classification method for hydropower station structures and equipment is developed to form a digital twin coding system for hydropower stations; Establish two model mapping methods: automatic mapping based on model coding and hook association based on experience logic, and establish a mapping system for the digital twin of the hydropower station and the visualization model and data association; Establish a mapping between monitoring and detection data and the digital twin of the hydropower station, including establishing a measurement point coding system and analytical mapping based on measurement point coding; Create a shared reference to the mapping relationship.

2. The method for mapping hydropower station data and three-dimensional scenes based on digital twins according to claim 1, characterized in that: The engineering coding of the digital twin coding system of the hydropower station consists of four levels: system code, building code, function code, and element code; the equipment coding consists of four levels: plant code, system code, equipment code, and component code.

3. The method for mapping hydropower station data and three-dimensional scenes based on digital twins according to claim 2, characterized in that: The automatic mapping method based on model encoding is: According to the digital twin coding system of the hydropower station, the BIM model of the structural equipment of the hydropower station is encoded; after uploading the BIM model to the mapping system, the system first separates the model attribute information and model geometric data through lightweight tools, and then automatically parses the hierarchical structure of the model according to the coding rules, that is, the structure tree of the hydropower station twin. The structure tree, model geometric data, and model attribute information of the hydropower station twin are associated through unique coding to achieve a one-to-one mapping between the model and the twin object.

4. The method for mapping hydropower station data and three-dimensional scenes based on digital twins according to claim 3 is characterized in that: The mapping method of the hook association based on empirical logic is: The unique coding and attribute information of each structural equipment of the hydropower station is uploaded to the mapping system in the form of a file. The system automatically generates a structure tree of the hydropower station twin according to the coding rules. After the model is uploaded to the mapping system, the component in the twin structure tree is selected and associated with the model corresponding to the component to achieve a one-to-one mapping of the hydropower station twin object, model data, and attribute information.

5. The method for mapping hydropower station data and three-dimensional scenes based on digital twins according to claim 4, characterized in that: The specific steps of the automatic mapping method based on model encoding are: S1. Use modeling software to perform BIM modeling of the hydropower station, enter the attribute information of the model components into the software, and assign a unique identification code to each component; S2. After completing BIM modeling, property entry and coding setting, a BIM model file is formed; S3, upload the BIM model to the mapping system and perform lightweight processing on the model; S4. Use lightweight tools to read and separate geometric data and non-geometric data in the BIM model by separating digital and analog data; S5. The lightweight model retains complete geometric data and unique codes, while non-geometric data is stored in a database; there is a one-to-one correspondence between the unique code in the lightweight model and the unique code in the attribute information database, and the lightweight model and attribute information can be associated through the unique code; S6. The mapping system presets the coding rules for hydropower station engineering and equipment categories in advance; S7. According to the coding rules, the mapping system automatically parses and obtains the hierarchical structure of the lightweight model, that is, the structure tree of the twin of the hydropower station; S8. Since the lightweight model and attribute information are associated through a unique code, after selecting any component of the hydropower station in the structure tree, the system can locate and highlight the lightweight model of this component in the three-dimensional scene, query the attribute information of the component, and realize the interactive linkage between the BIM model of the hydropower station and the twin structure tree.

6. The method for mapping hydropower station data and three-dimensional scenes based on digital twins according to claim 5, characterized in that: The specific steps of the mapping method of the hook association based on empirical logic are as follows: S1. Create a hydropower station structure decomposition file, assign a unique code to each engineering equipment according to the hydropower station twin coding system, and fill in the coding information and attribute information in the file; S2. Upload the structure decomposition file to the mapping system. According to the coding rules, the system automatically generates a structure tree of the hydropower station twin; S3, storing the attribute information of the engineering equipment in a database, and associating the attribute information with the structure tree through a unique code; S4, upload the 3D model and GIS model related to the hydropower station to the mapping system to achieve lightweight processing of the model; S5, in the system, select a component in the twin structure tree and associate it with a lightweight model corresponding to the component; S6. After the association is completed, select any component of the hydropower station in the structure tree. The system can locate and highlight the lightweight model of this component in the three-dimensional scene, query the attribute information of the component, and realize the interactive linkage between the three-dimensional model of the hydropower station, the GIS model and the twin structure tree.

7. The method for mapping hydropower station data and three-dimensional scenes based on digital twins according to claim 6, characterized in that: The measuring point coding system includes: on the basis of the digital twin coding system of the hydropower station, adding a monitoring type code and a measuring point sequence code to form a combined coding mode of "twin code-monitoring type-measuring point number".

8. The method for mapping hydropower station data and three-dimensional scenes based on digital twins according to claim 7, characterized in that: The analytical mapping based on the measuring point coding includes: S1. Import the measuring point information into the coding tool, add twin codes to the measuring points according to the monitored objects, add type codes to the measuring points according to the measuring point types, and add sequence codes to the same type of monitoring points; S2. The mapping system presets the coding rules of the hydropower station measurement points in advance; S3, upload the measuring point information to the mapping system. According to the measuring point code, the system automatically parses the twin object to which the measuring point belongs, as well as the type and quantity of the measuring point; S4. Since there is a many-to-one relationship between the measuring points of the hydropower station and the twin objects, the system can directly connect each measuring point to the corresponding twin structure tree to form a hydropower station twin monitoring tree; S5. After automatic mounting, the mounting relationship between the measuring point and the twin structure tree can be manually adjusted; S6. The attribute information and time series data of the measuring points are stored in a structured database and associated with the monitoring tree through a unique measuring point code; S7. In the three-dimensional scene constructed by the visualization model, the spatial distribution position of the measuring point is marked according to the measuring point coordinates, and is associated with the monitoring tree through the unique measuring point code; S8. After the association is completed, select any measuring point of the hydropower station in the monitoring tree. The system locates and highlights this measuring point and the visual model of the component to which this measuring point belongs in the three-dimensional scene, queries the measuring point attribute information and monitoring data, and realizes the interactive linkage between the hydropower station twin and the monitoring point.

9. The method for mapping hydropower station data and three-dimensional scenes based on digital twins according to claim 8, characterized in that: The shared references of the mapping relationship include: S1. After completing the mapping between the digital twin of the hydropower station and the visualization model and monitoring data, share this mapping relationship with the business personnel who need to use it; S2. Check the twin data directory in the system, including the association information between the twin and the model data, model attribute information, measurement point attribute information, monitoring data, etc. Business personnel can retrieve the required twin information through keyword and condition query; S3. Import the authorized model code into the mapping system. The system can automatically generate the mapping relationship between the authorized model and the twin based on the latest version of the association information. S4. Import the authorized measurement point code into the mapping system. The system can automatically generate the mapping relationship between the authorized measurement point and the twin according to the latest version of the association information; S5. Relevant personnel directly use the associated information, or make adjustments based on the existing associated information, or reconnect the digital twin of the hydropower station with the visualization model and monitoring data as needed, and manage the reconnected or adjusted associated information as another version.

10. The method for mapping hydropower station data and three-dimensional scenes based on digital twins according to claim 9, characterized in that: The visualization model is a display carrier of the hydropower station digital twin and needs to be attached to a decomposed object of the twin. The monitoring data is the driver of the digital twin of the hydropower station and needs to be connected to a decomposed object of the twin.

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