Engineering data digital delivery method and system based on BIM large model

Abstract

The invention relates to the technical field of data delivery, and discloses an engineering data digital delivery method and system based on a BIM large model, and the system comprises a data collection unit, a data integration unit, an association processing unit, and a data delivery unit. According to the method, various data are collected from each related system and terminal of the project, rich contents such as a BIM model and a design drawing are covered, a complete data basis is provided for project management, and information loss is avoided; a specific conversion algorithm is adopted for data of different sources, for example, CAD drawings and the like are subjected to accurate format conversion and association, an information base is constructed with a BIM model component as a core, and data availability and management efficiency are improved; by assigning a unique identifier to the component and establishing association between multiple aspects and the component, information of each stage of the component can be conveniently traced, and engineering management is powerfully supported; by means of correlation analysis, the data value is improved, data potential relations are mined, problems are found, the scheme is optimized, and more valuable information is provided for operation and maintenance management.

Description

Technical Field

[0001] The present invention relates to the technical field of data delivery, and in particular to a method and system for digital delivery of engineering data based on a BIM large model. Background Art

[0002] In the field of construction engineering, with the rapid development of information technology, building information modeling (BIM) technology has been widely used. However, there are still many challenges in the delivery of engineering data. Traditional engineering data delivery often faces the problem of scattered data sources. Data may come from multiple different data sources such as engineering design software, construction management systems, and various equipment monitoring terminals. These data formats vary greatly. For example, the CAD drawing data in the design stage is incompatible with the BIM model data format, and construction management data and equipment monitoring data also have their own unique formats and structures.

[0003] This inconsistency in data format seriously hinders the effective integration and delivery of engineering data. Throughout the life cycle of a project, participants at different stages need accurate, complete and uniformly formatted engineering data to make decisions, manage and operate. For example, the construction party needs to combine design data and on-site monitoring data to reasonably arrange the construction progress and ensure construction quality, while the operation and maintenance party relies on design, construction and equipment operation history data to maintain and manage building facilities. However, due to the confusion of data formats, data is difficult to flow smoothly between different systems and participants, resulting in poor information transmission and low collaboration efficiency. It may even cause adverse consequences such as engineering quality problems, delays in construction period and increased costs due to data errors or omissions.

[0004] In addition, the lack of an effective association mechanism is also a key issue in the process of engineering data integration. Different types of engineering data, such as building structure data and electromechanical equipment data, are closely related in physical space, but it is difficult to accurately establish the logical association between them under traditional data processing methods. This makes it impossible to fully utilize the inherent connections between data during engineering analysis, optimization, and subsequent operation and maintenance management, further reducing the utilization value of engineering data and the level of intelligent engineering management.

[0005] In summary, in order to improve the quality and efficiency of engineering data delivery and meet the needs of engineering life cycle management, an innovative digital delivery method and system for engineering data based on BIM big model is urgently needed to achieve effective collection, format unification, integrated association and accurate delivery of multi-source data. Summary of the invention

[0006] The purpose of the present invention is to provide a method and system for digital delivery of engineering data based on a BIM large model, which solves the technical problems raised in the background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions: A method for digital delivery of engineering data based on a BIM big model, comprising the following steps: Step 1: Data Collection Acquire engineering data from multiple data collection points such as engineering design software, construction management system, equipment monitoring terminals, etc.; Step 2: Data Integration In order to solve the problem of inconsistent data formats from different sources, a data format conversion algorithm is used to unify the format, and the converted data with unified format are integrated according to the information architecture of the BIM large model; Step 3: Data Delivery Extract the required data from the engineering data repository based on project requirements and recipient's requirements.

[0008] As a further solution of the present invention: engineering data includes but is not limited to BIM model data, design drawing information, construction progress data, material and equipment parameters, and field monitoring data; the field monitoring data includes temperature, humidity, and structural stress.

[0009] As a further solution of the present invention: the unified format processing method is as follows: StepA1.1. For CAD drawing data: Extract the coordinate information of graphic elements in CAD data and mark them as (X i , Y i ), and i=1, 2, ... n, n represents the number of coordinates; Then through:

[0010] Calculate the coordinates in the BIM model coordinate system after conversion (X1 i , Y1 i ); Wherein, a1, a2, a3, and a4 are conversion coefficients preset according to the conversion relationship between the two coordinate systems; StepA1.2, for construction management data: Construction management data includes construction progress data and construction quality inspection data; By developing data interfaces or using intermediate conversion tools, the task information in the construction schedule is converted into progress entity information in the IFC format. At the same time, data extraction and conversion programs are developed to associate the construction quality inspection data with the corresponding BIM model components. Task information includes task name, start time, end time, dependencies, etc. StepA1.2, for equipment monitoring data: The real-time data collected by the equipment monitoring terminal at the construction site is transmitted to the data server; In the data server, develop data receiving and conversion programs to associate the real-time monitoring data with the corresponding equipment or structural components in the BIM model in time series; Among them, the data association method based on BIM model components is as follows: StepA01. In the BIM model, assign a unique identifier to each component; StepA02: Establish data association StepA02.1. Associate the component design attributes generated in the design software with the components in the BIM model through IDs; During the data integration process, a relational database table is created; StepA02.2, associate the tasks in the construction schedule with the components in the BIM model; StepA02.3. For the records generated by equipment or building components during the operation and maintenance phase, they are also associated through the component ID; As a further solution of the present invention: wherein, the format of the converted CAD drawing data is a format compatible with the BIM model, and the format compatible with the BIM model is selected as the IFC format.

[0011] As a further solution of the present invention: the integration method is: Taking the components in the BIM model as the core, the data related to the engineering data is bound to the BIM model, and an engineering data information library is constructed; The specific method is as follows: Design an engineering data information database, whose database architecture includes multiple data tables, including BIM model component tables, design attribute tables, construction schedule tables, operation and maintenance record tables, etc.; Multiple data tables are associated with each other through key fields such as component ID to form an organic whole; Store the data with unified format and association processing into the engineering data information database; It uses a database management system to manage operations such as data storage, query, update and deletion; As a further solution of the present invention: it also includes the step of association processing: Extract various categories of related data and their three-dimensional coordinate information from the BIM large model, and perform association analysis between the category-related data based on the three-dimensional coordinate information corresponding to the category-related data. When the degree of association exceeds the preset association threshold, the corresponding category-related data is combined into associated data and stored in the engineering data information library; As a further solution of the present invention: wherein the multiple categories of related data include building structure data and electromechanical equipment data; The three-dimensional coordinate information of the relevant data includes the coordinates of the starting and ending points of each building structure and the center coordinates of each electromechanical equipment; As a further solution of the present invention: the association analysis method is as follows: Step P1. Coordinate extraction Get the starting and ending coordinates of a building structure from the BIM model and mark them as A (x1, y1, z1) and B (x2, y2, z2) respectively; Get the center coordinates of an electromechanical device from the BIM model and mark them as P (x0, y0, z0). Step P2, distance calculation pass: AB=(x2-x1,y2-y1,z2-z1) Calculate the coordinate vector AB from the starting point coordinate to the end point coordinate of the building structure; Also through: AP=(x0-x1,y0-y1,z0-z1) Calculate the coordinate vector AP from the starting point coordinates of the building structure to the center coordinates of the electromechanical equipment; Then through:

[0012] Calculate the cosine of the angle between AB and AP ; Where:

[0013]

[0014]

[0015] Afterwards via:

[0016] Calculate the distance between the building structure and the electromechanical equipment ; Step P3, association determination The distance between the corresponding building structure and the corresponding electromechanical equipment Compare with the preset distance threshold TD: like <TD, it is determined that there is a correlation between the building structure and the electromechanical equipment, and they are marked as potential correlation pairs; Step P4, correlation calculation Step P4.1, mark each building structure in the building structure data as Qk, and mark each electromechanical equipment in the electromechanical equipment data as Ph; Wherein, k=1, 2, ..., u, where u represents the number of each building structure in the building structure data, and h=1, 2, ..., v, where v represents the number of each electromechanical device in the electromechanical device data; Step P4.2, through:

[0017] Calculate the correlation R between building structure data and electromechanical equipment data; Wherein, F(M, W) is the preset spatial association judgment function, where when M and W are a potential association pair, the value of F(M, W) is 1, otherwise the value of F(M, W) is 0; According to Step P1 to Step P3, the correlation between the relevant data of each other category is calculated in turn.

[0018] A digital delivery system for engineering data based on a BIM big model, the system is used to execute a digital delivery method for engineering data based on a BIM big model, the system comprising: A data acquisition unit, used to acquire engineering data from multiple source data acquisition points; The data integration unit is used to unify the format of data from different sources using a data format conversion algorithm, and integrate the converted data in a unified format according to the information architecture of the BIM model. The integration method is to take the components in the BIM model as the core, bind the data related to the engineering data to the BIM model, and build an engineering data information library; An association processing unit is used to extract multiple categories of related data and their three-dimensional coordinate information from the BIM large model, and perform association analysis between the category-related data based on the three-dimensional coordinate information corresponding to the category-related data. When the degree of association exceeds a preset association threshold, the corresponding category-related data is combined into associated data and stored in the engineering data information library; The data delivery unit is used to extract the required data from the engineering data information library according to project requirements and recipient requirements.

[0019] Beneficial effects of the present invention: Advantages of multi-source data integration: It can obtain rich and diverse engineering data from multiple sources such as engineering design software, construction management system, equipment monitoring terminal, etc., including BIM model data, design drawing information, construction progress data, material and equipment parameters, on-site monitoring data, etc. This comprehensive data collection method provides a complete data foundation for the management of the entire life cycle of the project, avoiding the problem of missing or one-sided information caused by a single data source, and helping all participants to fully understand the project status and make more accurate decisions.

[0020] Data format unification and integration efficiency: To address the problem of inconsistent data formats from different sources, a specific data format conversion algorithm is used for unified processing. For example, for CAD drawing data, its graphic element coordinate information can be accurately converted into coordinates under the BIM model coordinate system, and converted into a format compatible with the BIM model; for construction management data, by developing data interfaces or intermediate conversion tools, the construction schedule information is converted into progress entity information in the IFC format, and the construction quality inspection data can be effectively associated with the BIM model components; for equipment monitoring data, a data receiving and conversion program is developed to achieve association with the corresponding equipment or structural components in the BIM model. The data with unified format is integrated with the BIM model components as the core to build an organic engineering data information library, which improves the availability and management efficiency of data and reduces the complexity and error rate of data processing.

[0021] Component-based data association accuracy: In the process of data integration, by assigning a unique identifier to each component in the BIM model and establishing an association between the component design attributes, construction schedule tasks, and operation and maintenance phase records in the design software, accurate binding of data and components is achieved. This association method enables data query, analysis, and application to be carried out based on specific components, making it easier to trace the source of data and understand the detailed information of components at different stages, such as querying the parameters of a component in the design stage, the progress of the construction stage, and the records of the operation and maintenance stage, etc., providing strong support for project quality control, schedule management, and operation and maintenance optimization.

[0022] Association analysis improves data value: by extracting multiple categories of related data and their three-dimensional coordinate information, association analysis is performed between category-related data. Based on accurate coordinate calculation and distance judgment, the association relationship between data is determined, and the degree of association is calculated. When the degree of association exceeds the preset threshold, the related data is combined into related data and stored. This kind of association analysis can dig out the potential connections between data and discover the mutual influence and dependency between different parts of the project, such as the coordination of the spatial layout of the building structure and electromechanical equipment. It helps to discover potential problems in design or construction in advance, such as spatial conflicts and functional mismatches, so as to optimize the engineering design and construction plan, improve the quality and safety of the project, and also provide more valuable information for subsequent operation and maintenance management. For example, when maintaining equipment, the inspection and maintenance of the closely related building structure parts can be considered at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a system block diagram of a digital delivery system for engineering data based on a BIM large model of the present invention.

[0025] Figure 2 It is a flow chart of a method for digital delivery of engineering data based on a BIM large model of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1 See also Figure 1 and Figure 2 As shown, the present invention is a method for digital delivery of engineering data based on a BIM big model, comprising the following steps: Step 1: Data Collection Acquire engineering data from multiple data collection points such as engineering design software, construction management system, equipment monitoring terminals, etc.; Engineering data includes but is not limited to BIM model data, design drawing information, construction progress data, material and equipment parameters, and on-site monitoring data; on-site monitoring data includes temperature, humidity, structural stress, etc.; Step 2: Data Integration StepA1: Unify the format To address the inconsistency of data formats from different sources, a data format conversion algorithm is used to unify the format; The unified format processing method is as follows: StepA1.1. For CAD drawing data: Extract the coordinate information of graphic elements in CAD data and mark them as (X i , Y i ), and i=1, 2, ... n, n represents the number of coordinates; Then through:

[0028] Calculate the coordinates in the BIM model coordinate system after conversion (X1 i , Y1 i ); Wherein, a1, a2, a3, and a4 are conversion coefficients preset according to the conversion relationship between the two coordinate systems; The format of the converted CAD drawing data is a format compatible with the BIM model, and the format compatible with the BIM model is selected as the IFC format; StepA1.2, for construction management data: Construction management data includes construction progress data and construction quality inspection data; Among them, construction progress data is usually stored in project management software, and construction quality inspection data includes concrete test block compressive strength test reports, steel structure weld flaw detection test results, etc., and is stored in the database in the form of structured data; By developing data interfaces or using intermediate conversion tools, the task information in the construction schedule is converted into progress entity information in the IFC format. At the same time, data extraction and conversion programs are developed to associate the construction quality inspection data with the corresponding BIM model components. Task information includes task name, start time, end time, dependencies, etc. For example, each construction task is mapped to an IfcTask entity in IFC, and the logical relationship between tasks is expressed through relationship entities such as IfcRelSequence, so that it can be connected with the building components in the BIM model in the time dimension; among them, logical relationships include sequence, parallel relationship, etc. For example, the concrete test block test data is associated with the corresponding concrete structural components through a custom attribute set in the IFC format; the attribute set contains information such as the test block number, test date, and compressive strength value, so that the quality inspection status of the component can be intuitively viewed in the BIM model; StepA1.2, for equipment monitoring data: The real-time data collected by the equipment monitoring terminal at the construction site is transmitted to the data server; In the data server, develop data receiving and conversion programs to associate the real-time monitoring data with the corresponding equipment or structural components in the BIM model in time series; Among them, real-time data such as temperature, humidity, structural stress, equipment operating status, etc. For example, for structural stress monitoring data, it is associated with the load-bearing structural components in the BIM model, and the change of stress values ​​over time is recorded as custom attributes in the IFC format, so as to be visualized and analyzed in the BIM model; Among them, the data association method based on BIM model components is as follows: StepA01. In the BIM model, assign a unique identifier to each component; For example, for beam components in a building structure, the numbering format of "L-XX-YY" can be used, where "L" represents the beam, "XX" represents the floor number, and "YY" represents the sequential number of the beams on the floor; in this way, each component can be accurately located and identified within the entire engineering data range; StepA02: Establish data association StepA02.1. Associate the component design properties generated in the design software with the components in the BIM model through ID.

[0029] During the data integration process, a relational database table is created, which records information such as component ID, design attribute name, attribute value, and data source; For example, for a beam component numbered "L-05-03", record its design properties such as cross-sectional size "300mm×600mm" and concrete strength grade "C30" in the association table, and indicate that these properties are derived from the Revit design software; StepA02.2. Associate the tasks in the construction schedule with the components in the BIM model; determine the scope of components involved in each task based on the division of construction tasks; For example, the concrete pouring task of a certain floor involves all the beams, slabs and columns of the floor. When integrating data, the task ID, component ID and the relationship between the task and the component are recorded in the associated database table. In this way, when viewing a component in the BIM model, you can intuitively understand its construction schedule. Conversely, when viewing the construction schedule, you can also clearly know the specific building components corresponding to each task. StepA02.3. For the records generated by equipment or building components during the operation and maintenance phase, they are also associated through the component ID; an operation and maintenance record database table is created to record information such as the component ID, operation and maintenance event name, event occurrence time, event description, and processing results; For example, for an elevator equipment, it has a corresponding equipment component ID in the BIM model, and the operation and maintenance time, maintenance content, and operation status evaluation after maintenance are recorded in the operation and maintenance record table, so that the operation and maintenance history of the equipment can be queried at any time in the BIM model, providing data support for the full life cycle management of the equipment; Step A2: Information Integration The converted data in a unified format are integrated according to the information architecture of the BIM model in the following ways: Taking the components in the BIM model as the core, the data related to the engineering data is bound to the BIM model, and an engineering data information library is constructed; The specific method is as follows: Design an engineering data information database, whose database architecture includes multiple data tables, including BIM model component tables, design attribute tables, construction schedule tables, operation and maintenance record tables, etc.; Multiple data tables are associated with each other through key fields such as component ID to form an organic whole; For example, the basic information of components, such as ID, name, type, spatial location, etc., is stored in the BIM model component table. The component ID is linked to the design attribute table, construction schedule, operation and maintenance record table, etc. to achieve integrated data storage. Store the data with unified format and association processing into the engineering data information database; It uses a database management system to manage operations such as data storage, query, update and deletion; For example, when there is new construction progress data update, the new progress information is updated to the construction schedule according to the task ID and component ID through the update statement of the database management system, and the progress visualization display of the components related to the task in the BIM model is updated synchronously; At the same time, in order to ensure the security and integrity of the data, database user authority management is set up to limit the access and operation levels of different users to the data. For example, designers can only modify the design attribute data, construction management personnel can only update the construction progress data, and operation and maintenance personnel can only add and query operation and maintenance record data. Step 3: Data Delivery Extract the required data subset from the engineering data information repository according to project requirements and recipient's requirements; For example, for the construction party, data related to construction progress, construction technology, material supply, etc. are extracted; for the operation and maintenance party, data related to equipment operating parameters, maintenance plans, space layout, etc. are extracted.

[0030] This embodiment can collect engineering data from multiple sources such as engineering design software, construction management system, equipment monitoring terminal, etc., covering rich content such as BIM model data, design drawing information, construction progress data, material and equipment parameters, on-site monitoring data, etc., to achieve comprehensive integration of engineering data; it handles the problem of inconsistent data formats from different sources through data format conversion algorithms, such as converting CAD drawing data into IFC format compatible with BIM models, so that various types of data can be processed and analyzed on the same platform, facilitating data circulation and sharing; it assigns a unique identifier to each component in the BIM model, and on this basis associates design attributes, construction progress tasks, operation and maintenance records and other data with the component. In the BIM model, you can intuitively understand the design information, construction schedule and operation and maintenance history of the components. Conversely, when viewing various types of data, you can also clearly identify the corresponding building components, which greatly improves the relevance and traceability of the data; build an engineering data information database, integrate data with BIM model components as the core, and use the database management system to store, query, update and delete data. At the same time, set up database user permission management to ensure the security and integrity of the data, improve the efficiency and standardization of data management, and people with different roles can only operate data with corresponding permissions, reducing the risk of data misoperation and abuse; the required data subsets can be extracted from the engineering data information database according to project needs and recipient requirements. For example, the construction party and the operation and maintenance party can obtain the data of their respective concerns, which meets the specific data needs of different subjects at different stages of the project and improves the pertinence and practicality of data delivery.

[0031] Embodiment 2 As the second embodiment of the present invention, when the present application is implemented, compared with the first embodiment, the technical solution of the present embodiment is different from the first embodiment only in that the present embodiment further includes the following associated processing steps: Extract various categories of related data and their three-dimensional coordinate information from the BIM large model, and perform association analysis between the category-related data based on the three-dimensional coordinate information corresponding to the category-related data. When the degree of association exceeds the preset association threshold, the corresponding category-related data is combined into associated data and stored in the engineering data information library; The specific method is as follows: Step 1: Information Collection Extract various types of relevant data and their 3D coordinate information from the BIM large model; Various types of related data include but are not limited to building structure data and electromechanical equipment data; The three-dimensional coordinate information of the relevant data includes: the coordinates of the starting and ending points of each building structure; the center coordinates of each electromechanical equipment; Step 2: Correlation Analysis Step P1. Coordinate extraction Get the starting and ending coordinates of a building structure from the BIM model and mark them as A (x1, y1, z1) and B (x2, y2, z2) respectively; Get the center coordinates of an electromechanical device from the BIM model and mark them as P (x0, y0, z0). Step P2, distance calculation pass: AB=(x2-x1,y2-y1,z2-z1) Calculate the coordinate vector AB from the starting point coordinate to the end point coordinate of the building structure; Also through: AP=(x0-x1,y0-y1,z0-z1) Calculate the coordinate vector AP from the starting point coordinates of the building structure to the center coordinates of the electromechanical equipment; Then through:

[0032] Calculate the cosine of the angle between AB and AP ; Where:

[0033]

[0034]

[0035] Afterwards via:

[0036] Calculate the distance between the building structure and the electromechanical equipment ; Step P3, association determination The distance between the corresponding building structure and the corresponding electromechanical equipment Compare with the preset distance threshold TD: like <TD, it is determined that there is a correlation between the building structure and the electromechanical equipment, and they are marked as potential correlation pairs; Step P4, correlation calculation Step P4.1, mark each building structure in the building structure data as Qk, and mark each electromechanical equipment in the electromechanical equipment data as Ph; Wherein, k=1, 2, ..., u, where u represents the number of each building structure in the building structure data, and h=1, 2, ..., v, where v represents the number of each electromechanical device in the electromechanical device data; Step P4.2, through:

[0037] Calculate the correlation R between building structure data and electromechanical equipment data; Wherein, F(M, W) is the preset spatial association judgment function, where when M and W are a potential association pair, the value of F(M, W) is 1, otherwise the value of F(M, W) is 0; According to StepP1 to StepP3, calculate the correlation between the relevant data of each other category in turn; Step 3: Correlation output When the correlation degree exceeds a preset correlation threshold, the relevant data of the corresponding category are combined into related data and stored in the engineering data information library.

[0038] Based on the first embodiment, this embodiment adds an association processing step to extract multiple categories of related data and their three-dimensional coordinate information from the BIM large model for association analysis. By calculating the distance, angle cosine value and correlation between different categories of data such as building structure and electromechanical equipment, it is possible to discover potential association relationships, and combine the data with a correlation exceeding the preset threshold into associated data and store them in the engineering data information library, further exploring the inherent connection between the data and enriching the depth and breadth of data association; this association analysis helps to discover the potential synergistic relationship or mutual influence factors between different parts of the project, such as the layout association between the building structure and electromechanical equipment may affect the equipment's operating efficiency, maintenance convenience and overall performance of the building. By integrating and storing the associated data, a more valuable data foundation is provided for subsequent engineering analysis, optimized design, operation and maintenance decisions, etc., so that the data can better serve all aspects of the entire project life cycle and improve the comprehensive benefits of the project.

[0039] Embodiment 3 As the third embodiment of the present invention, when the present application is specifically implemented, compared with the first and second embodiments, the technical solution of this embodiment is to combine the solutions of the first and second embodiments mentioned above for implementation.

[0040] This embodiment combines the solutions of embodiment one and embodiment two for implementation. It has the advantages of embodiment one, namely, comprehensive data integration, unified format, precise association, efficient storage management, and flexible data delivery. It also integrates the advantages of embodiment two, namely, deep data association mining. It can realize all-round integration and deep mining of engineering data, and provide more comprehensive, in-depth, precise, and secure data support for the entire life cycle of engineering construction, operation and maintenance. It helps to improve the scientific nature of engineering decision-making, the controllability of engineering quality, and the efficiency of engineering operation, and maximize the data value of BIM big models in the engineering field.

[0041] The present invention also provides a digital delivery system for engineering data based on a BIM big model, the system is used to execute a digital delivery method for engineering data based on a BIM big model, the system comprising: A data acquisition unit, used to acquire engineering data from multiple source data acquisition points; The data integration unit is used to unify the format of data from different sources using a data format conversion algorithm, and integrate the converted data in a unified format according to the information architecture of the BIM model. The integration method is to take the components in the BIM model as the core, bind the data related to the engineering data to the BIM model, and build an engineering data information library; An association processing unit is used to extract multiple categories of related data and their three-dimensional coordinate information from the BIM large model, and perform association analysis between the category-related data based on the three-dimensional coordinate information corresponding to the category-related data. When the degree of association exceeds a preset association threshold, the corresponding category-related data is combined into associated data and stored in the engineering data information library; The data delivery unit is used to extract the required data from the engineering data information library according to project requirements and recipient requirements.

[0042] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters and thresholds in the formula are set by technicians in this field according to actual conditions.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for digital delivery of engineering data based on a BIM large model, characterized in that: The following steps are involved: Step 1: Data Collection Acquire engineering data from multiple data collection points; Step 2: Data Integration Unify the format of engineering data with inconsistent data formats from different sources, and integrate the converted data in a unified format according to the information architecture of the BIM model. The integration method is to take the components in the BIM model as the core, bind the data related to the engineering data to the BIM model, and build an engineering data information library; Step 3: Association Processing Extract various categories of related data and their three-dimensional coordinate information from the BIM large model, and perform association analysis between the category-related data based on the three-dimensional coordinate information corresponding to the category-related data. When the degree of association exceeds the preset association threshold, the corresponding category-related data is combined into associated data and stored in the engineering data information library; Step 4: Data Delivery Extract the required data from the engineering data repository based on project requirements and recipient's requirements.

2. According to claim 1, a method for digital delivery of engineering data based on a BIM big model is characterized in that: The unified format processing method is as follows: StepA1.

1. For CAD drawing data: Extract the coordinate information of graphic elements in CAD data and mark them as (X i , Y i ), and i=1, 2, ... n, n represents the number of coordinates; Then through: ； Calculate the coordinates in the BIM model coordinate system after conversion (X1 i , Y1 i ); Wherein, a1, a2, a3, and a4 are conversion coefficients preset according to the conversion relationship between the two coordinate systems; The format of the converted CAD drawing data is a format compatible with the BIM model, and the format compatible with the BIM model is selected as the IFC format; StepA1.2, for construction management data: Construction management data includes construction progress data and construction quality inspection data; By developing data interfaces or using intermediate conversion tools, the task information in the construction schedule is converted into progress entity information in the IFC format. At the same time, data extraction and conversion programs are developed to associate the construction quality inspection data with the corresponding BIM model components. StepA1.2, for equipment monitoring data: The real-time data collected by the equipment monitoring terminal at the construction site is transmitted to the data server; In the data server, a data receiving and conversion program is developed to associate the real-time monitoring data with the corresponding equipment or structural components in the BIM model in time series.

3. A method for digital delivery of engineering data based on a BIM big model according to claim 2, characterized in that: in, The data association method based on BIM model components is as follows: StepA01. In the BIM model, assign a unique identifier to each component; StepA02: Establish data association StepA02.

1. Associate the component design attributes generated in the design software with the components in the BIM model through ID; During the data integration process, a relational database table is created; StepA02.2, associate the tasks in the construction schedule with the component ID in the BIM model; StepA02.

3. Records generated by equipment or building components during the operation and maintenance phase are also associated through the component ID.

4. The method for digital delivery of engineering data based on a BIM big model according to claim 1, characterized in that: The specific integration methods are as follows: Design an engineering data information database, whose database architecture includes multiple data tables, including BIM model component table, design attribute table, construction schedule table, and operation and maintenance record table; Multiple data tables are associated with each other through key fields corresponding to component IDs to form a whole; The data with unified format and association processing is stored in the engineering data information library.

5. The method for digital delivery of engineering data based on a BIM big model according to claim 1, characterized in that: in, Various categories of related data include building structure data, electromechanical equipment data; The three-dimensional coordinate information of the relevant data includes the coordinates of the starting point and the end point of each building structure and the center coordinates of each electromechanical equipment.

6. A method for digital delivery of engineering data based on a BIM big model according to claim 5, characterized in that: The association analysis method is as follows: Step P1. Coordinate extraction Get the starting and ending coordinates of a building structure from the BIM model and mark them as A (x1, y1, z1) and B (x2, y2, z2) respectively; Get the center coordinates of an electromechanical device from the BIM model and mark them as P (x0, y0, z0). Step P2, distance calculation pass: AB=(x2-x1,y2-y1,z2-z1) Calculate the coordinate vector AB from the starting point coordinate to the end point coordinate of the building structure; Also through: AP=(x0-x1,y0-y1,z0-z1) Calculate the coordinate vector AP from the starting point coordinates of the building structure to the center coordinates of the electromechanical equipment; Then through: ； Calculate the cosine of the angle between AB and AP ; Afterwards via: ; Calculate the distance between the building structure and the electromechanical equipment ; Step P3: Association determination The distance between the corresponding building structure and the corresponding electromechanical equipment Compare with the preset distance threshold TD, and determine whether there is an association between the corresponding building structure and the corresponding electromechanical equipment based on the comparison result, and mark the associated building structure and electromechanical equipment as potential association pairs: Step P4, correlation calculation Step P4.1, mark each building structure in the building structure data as Qk, and mark each electromechanical equipment in the electromechanical equipment data as Ph; Wherein, k=1, 2, ..., u, where u represents the number of each building structure in the building structure data, and h=1, 2, ..., v, where v represents the number of each electromechanical device in the electromechanical device data; Step P4.2, through: ； Calculate the correlation R between building structure data and electromechanical equipment data; In the formula, F(M, W) is the preset spatial association judgment function; M and W represent the building structure in the building structure data and the electromechanical equipment in the electromechanical equipment data, respectively; According to Step P1 to Step P3, the correlation between the relevant data of each other category is calculated in turn.

7. A method for digital delivery of engineering data based on a BIM big model according to claim 6, characterized in that: in, When M and W are a potential association pair, the value of F(M, W) is 1, otherwise the value of F(M, W) is 0.

8. The method for digital delivery of engineering data based on a BIM big model according to claim 6 is characterized in that: in: 。 9. The method for digital delivery of engineering data based on a BIM big model according to claim 6 is characterized in that: In StepP2, the comparison is as follows: like <TD, it is determined that there is a relationship between the building structure and the electromechanical equipment; like ≥TD, it is determined that there is no association between the building structure and the electromechanical equipment.

10. A digital delivery system for engineering data based on a BIM big model, the system being used to execute a digital delivery method for engineering data based on a BIM big model as claimed in any one of claims 1 to 9, characterized in that: The system includes: A data acquisition unit, used to acquire engineering data from multiple source data acquisition points; The data integration unit is used to unify the format of data from different sources using a data format conversion algorithm, and integrate the converted data in a unified format according to the information architecture of the BIM model. The integration method is to take the components in the BIM model as the core, bind the data related to the engineering data to the BIM model, and build an engineering data information library; An association processing unit is used to extract multiple categories of related data and their three-dimensional coordinate information from the BIM large model, and perform association analysis between the category-related data based on the three-dimensional coordinate information corresponding to the category-related data. When the degree of association exceeds a preset association threshold, the corresponding category-related data is combined into associated data and stored in the engineering data information library; The data delivery unit is used to extract the required data from the engineering data information library according to project requirements and recipient requirements.

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