Ship intelligent construction collaborative management method based on BIM / AR fusion technology

Abstract

The invention relates to a ship intelligent construction collaborative management method based on a BIM / AR fusion technology. The method comprises the steps that model processing and attribute information hooking are carried out; fusing an AR technology, and superposing the model to a real space; augmented reality disclosure; performing dynamic progress collaborative management; and digitally checking. According to the method, through a secondary development mode, repeated modeling is not needed, automatic hitching of the ship model and the attribute information is achieved, and then the AR technology is used for guiding ship component construction disclosure and checking. On the basis of a BIM model, the model is combined with a real space, and efficient and accurate paying-off positioning of the ship component is achieved. After construction is finished, quick checking and acceptance can be achieved without repeatedly checking drawings, the accuracy and management efficiency of the ship building process are improved, meanwhile, the problems that in an original management and control mode, the model visualization range and degree are insufficient, and information transmission is interrupted are effectively solved, the BIM application range and depth are widened, and the construction efficiency is improved. And the method has very high application value in the ship building process.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent ship construction, and in particular to a collaborative management method for intelligent ship construction based on BIM / AR fusion technology. Background Art

[0002] In past shipbuilding practices, all parties involved primarily relied on two-dimensional drawings and paper documents to convey information, an approach that can easily lead to misunderstandings. Shipbuilding is a highly complex system engineering project, involving multiple specialized areas such as hull structure, electromechanical equipment, and pipeline laying, as well as the collaborative work of numerous trades. However, traditional construction models lack efficient real-time collaborative management tools, making it difficult to precisely control the complex and interconnected construction process. This leads to frequent delays in construction schedules and quality risks, impacting the quality and efficiency of shipbuilding.

[0003] With the rapid development of information technology, shipbuilding has gradually shifted to a digital management and control mode. Among them, TRIBON software is the most representative and is widely used by many ship manufacturers around the world. The system covers multiple modules such as hull design, outfitting system (including piping, ventilation, cable, etc. design), cabin layout, etc. For example, in piping system design, from principle design to modeling to production information extraction, through single database management, each link is closely linked, which not only improves design efficiency, but also effectively reduces the rework rate of actual ships. However, at the construction site, because the model files created are not linked to the attribute information, the threshold for viewing the model is high, and the model cannot be directly associated with the real environment on site, it is difficult to meet the construction personnel's urgent needs for real-time information interaction and on-site guidance.

[0004] AR technology offers advantages such as excellent visualization and strong interactivity. It can closely integrate virtual information with real-world scenarios, providing construction workers with an intuitive and immersive information display and interactive experience. However, mature cases and methods for organically integrating BIM models and AR technology and successfully applying them to the collaborative management of intelligent ship construction are still relatively scarce, and a systematic solution is urgently needed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies in the existing technology and provide a collaborative management method for intelligent ship construction based on BIM / AR fusion technology. Based on advanced technologies such as building information modeling (BIM) and augmented reality (AR), the collaborative management of the entire construction process is realized, thereby improving ship construction efficiency, reducing costs and improving product quality.

[0006] The present invention is achieved through the following technical solutions:

[0007] A collaborative management method for intelligent ship construction based on BIM / AR fusion technology includes the following steps:

[0008] S1. Preprocess the model file, segment it into a model family, and combine it with the attribute information file to connect the attribute information to form a segmented model;

[0009] S2. Summarize the segmented models in the AR software to integrate the entire ship model and integrate the model with the real scene of the construction site in real time;

[0010] S3. Each model family can be independently selected and set to either hidden or visible. By using the completed model family components as the background on the mobile terminal, you can manually hide model families not relevant to the current process and display the model families to be constructed and their attribute information.

[0011] S4. Enter the process name in the PC timeline, select the construction start and duration of the model family components, and bind them to each model family. The order in which the model families appear and disappear is consistent with the ship construction plan schedule;

[0012] S5. After the components at the construction site are installed, check whether there is any deviation between the position of the components at the construction site and the position of the model family components in the model.

[0013] According to the above technical solution, preferably, step S1 includes:

[0014] Import the model file, divide the model into segments, extract all part names in each segment, and save each part as an independent model family;

[0015] The independently saved model family and attribute information file are automatically bound based on key-value matching and batch injection methods.

[0016] According to the above technical solution, preferably, in step S1, the model is divided into hull, piping, equipment, and outfitting, and each segment is composed of a plurality of parts.

[0017] According to the above technical solution, preferably, after the "automatic binding" in step S1, the model family after attribute binding is integrated into segmented models of the hull, piping, equipment, and outfitting.

[0018] According to the above technical solution, preferably, step S2 includes:

[0019] Uploading the segmented model including attribute information to the AR software and dividing it into construction areas;

[0020] The segmented models are aggregated in the AR software using a unified origin coordinate system to achieve integration of the overall ship model;

[0021] The marking points are obtained in the overall ship model and the construction site, and the rigid body transformation matrix is ​​constructed through the coordinates of the marking points in the world coordinate system and the equipment coordinate system, and the model is superimposed on the real space of the construction site.

[0022] According to the above technical solution, preferably, after "uploading the segmented model containing attribute information to the AR software" in step S2, a face reduction method and a face merging method are used to enable each segmented model to retain three-dimensional features and mesh features while reducing the number of faces.

[0023] According to the above technical solution, preferably, the "obtaining marking points in the overall ship model and the construction site" in step S2 includes:

[0024] Input the coordinate information of any two points in the overall ship model into the AR software;

[0025] Place the intelligent positioning device at any location on the construction site to obtain the latitude and longitude information of that location.

[0026] According to the above technical solution, preferably, step S3 further includes:

[0027] The model family component in the mobile terminal is linked to a construction guidance document, which includes a welding process or equipment installation method animation, construction drawings, and construction specifications.

[0028] According to the above technical solution, preferably, step S5 includes:

[0029] Based on intelligent positioning equipment, check and compare the position, size, and orientation of each component with the model family and its attribute information;

[0030] If there are any deviations during the verification and comparison, the spatial measurement tool on the mobile terminal can be used to measure the position deviations between the model family components and the components on the construction site in real time, and a notification will be sent through the mobile terminal.

[0031] The beneficial effects of the present invention are:

[0032] The present invention provides a collaborative management method for intelligent ship construction based on BIM / AR fusion technology. Through secondary development, the ship model and attribute information can be automatically linked without repeated modeling, and AR technology can be used to guide the construction briefing and verification of ship components.

[0033] This invention, based on the BIM model, combines the model with real-world space to achieve efficient and accurate layout and positioning of ship components. After construction is completed, rapid verification and acceptance can be achieved without repeated checking of drawings, improving the accuracy and management efficiency of the shipbuilding process. It also effectively compensates for the problems of insufficient model visualization and information transmission interruptions in the original management and control methods, broadening the breadth and depth of BIM applications and showing great application value in the shipbuilding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a flow chart of the collaborative management method for intelligent ship construction provided by the present invention. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and the best embodiment. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the invention.

[0036] In the model files created by current mainstream ship modeling software, model entities and attribute information need to be viewed with the help of specific professional software, which is difficult for non-ship designers to operate, and the model and on-site construction conditions cannot be superimposed for analysis. Based on this, the technical problems solved by the present invention include:

[0037] (1) Attribute information fusion problem: Through secondary development, attribute information is matched with the model family. Compared with the method of manually adding attributes one by one, the efficiency can be increased by a hundred times. Through fuzzy matching and verification mechanism, the mismatch rate can be greatly reduced to meet the subsequent model output requirements.

[0038] (2) Low efficiency of collaborative management: After the ship model is imported into AR professional software, the ship model is positioned and superimposed with the real scene through the space transformation matrix method to guide the on-site installation briefing and verification and comparison work. The construction problems found during the inspection process can be bound to the model family through the built-in rectification form, and the problem can be quickly located and sent to the target responsible person. The corresponding personnel will reply after the processing is completed, so that the problem handling forms a closed loop.

[0039] (3) Insufficient data integration and real-time monitoring functions: Each part family in the ship model is bound to time, and the planned progress of the current time can be viewed by sliding the cc timeline at the construction site. By comparing the model with the actual progress on site, it can be intuitively found that a certain part has not been constructed or has been over-constructed. There is no need to frequently check the construction progress plan file, and the ship construction situation can be controlled in real time.

[0040] like Figure 1As shown, the present invention provides a ship intelligent construction collaborative management method based on BIM / AR fusion technology, comprising the following steps:

[0041] S1. Model processing and attribute information attachment: Preprocess the model file, segment it into model families, and attach the attribute information to the attribute information file to form a segmented model.

[0042] Export the .dxf model file and document-format attribute information file from the TRIBON software, import the model into the Navisworks software, and divide the model into hull, piping, equipment, and outfitting according to the different sections of ship construction. Each section is composed of many parts. Extract all the part names in each section and save each part as an independent model family, laying a solid foundation for subsequent management and application.

[0043] Independently saved model families and attribute information files are automatically bound based on key-value matching and batch injection methods. Model family parsing, family component parameter index construction, bidirectional verification, and dynamic attribute injection are implemented through a secondary development tool chain. The specific process is as follows: Use C# to develop a Navisworks plug-in. By referencing the Autodesk.Navisworks.Api namespace, you can obtain the currently open model family; obtain the currently open Navisworks file from Autodesk.Navisworks.Api.Application.ActiveDocument, and use ActiveDocument.Models.First.RootItem to traverse the model tree and collect all model families (ModelItem); for each ModelItem, obtain its name and build a mapping using the "External Name" column in the Excel attribute information table to find the corresponding Excel attribute data; because the PropertyCategories collection of the ModelItem is read-only, it needs to be written using the Navisworks COM API, and ComApiBridge is used to convert the ModelItem to a COM interface object. Then, a new property collection, InwOaPropertyVec, is created. For each property in Excel, an InwOaProperty object is created, its name, display name, and value are set, and all required properties (weight, material, specification, etc.) are added to the InwOaPropertyVec.Properties collection. Finally, these properties are written to the model family using propNode.SetUserDefined(0,"Excel Properties","ExcelProps",newPropVec). The parameters of SetUserDefined are: 0 indicates a new custom property category (not overwritten), "Excel Properties" is the name of the property category displayed in the Navisworks Property Panel, "ExcelProps" is the category's internal identifier, and newPropVec is the collection object containing the properties. After executing this method, a new property category named "Excel Properties" will be added to the model family, containing the written properties and their corresponding values.

[0044] Once attribute binding is complete, these newly added attributes are stored in the current Navisworks model family session. This allows the model family to be integrated into segmented models, such as the hull, piping, equipment, and outfitting, based on a common coordinate origin. Users can choose to save the integrated model as an NWD file, in which case the custom attributes are also saved. After attribute binding, each segmented model carries richer attribute information, enabling integration with other BIM data or processes.

[0045] S2. Integration of AR technology: The segmented models are aggregated in the AR software, divided according to the construction area, and integrated with the overall ship model with the help of mobile terminals such as tablet computers and smart phones, and the model is integrated with the real scene of the construction site in real time.

[0046] Using face reduction and patch merging methods, each segmented model retains its 3D and mesh features while reducing the number of faces, enabling lightweight viewing. Each segmented model is then aggregated within the AR software using a unified origin coordinate system to integrate the entire ship model. Based on the different construction areas, the software displays only the model of the current construction site.

[0047] Input the coordinate information of any two points in the overall ship model into the AR software, and then place the intelligent positioning device at any location on the construction site to obtain the latitude and longitude information of that location. Through the coordinates of three known marker points (A / B / C) in the world coordinate system and the device coordinate system, construct the rigid body transformation matrix, solve the rotation matrix R and translation vector t, and accurately superimpose the model on the real space.

[0048] S3. Augmented reality briefing: Each model family is selected independently and can be set to hidden or displayed. By using the completed model family components as the background on the mobile terminal, model families unrelated to the current process can be manually hidden, and the model families to be constructed and their attribute information can be displayed to match the current construction process and provide construction guidance for construction personnel.

[0049] By accurately positioning the model, the model family components on the model match their actual locations later in the project, visually displaying the dimensions, orientation, and location of the components to be constructed. By clicking on each model family component, geometric and non-geometric information such as the component material, manufacturer, and model can be viewed. Furthermore, animations of welding procedures or equipment installation methods, construction drawings, construction specifications, and other documents linked to the model family components can be viewed on mobile devices, providing comprehensive guidance for on-site construction.

[0050] S4. Dynamic progress collaborative management: Enter the process name in the PC timeline, select the construction start and duration of the model family components, and bind them to each model family. The display and disappearance order of each model family is consistent with the ship construction plan progress.

[0051] The mobile terminal provides a ship construction progress chart function, which allows users to view the construction progress plan for different stages by sliding the timeline. By comparing it with the actual situation on site, it guides on-site managers to quickly identify progress problems. Specifically, after the model family is superimposed with the actual components on site, the difference between the current process in the three-dimensional model and the actual process on site can be found, and then it can be determined whether the actual progress on site is lagging or ahead of schedule. If a construction delay is found, a construction period reminder will be added to the model family of the delayed part in the software and sent to the corresponding responsible personnel to ensure the construction progress. For ship components that are completed ahead of schedule, the construction status of the model family can be manually modified to "Constructed" in the software to ensure that the model information is consistent with the actual construction on site.

[0052] S5. Digital verification: After the components are installed at the construction site, check whether there is any deviation between the position of the components at the construction site and the position of the model family components in the model, and provide timely feedback and adjustments.

[0053] Based on intelligent positioning equipment, the position, size, and orientation of each component are checked and compared with the model family and its attribute information. If the model family and the actual component positions coincide and the quantity is the same, it can be basically confirmed that the on-site construction meets the design specification requirements.

[0054] If there are any deviations during the verification and comparison, use the spatial measurement tool on the mobile terminal to measure the position deviations between the model family components and the components on the construction site in real time, save screenshots, and use the built-in rectification function of the client platform to send rectification notices to the responsible personnel to confirm the ownership of the problem and review the problem.

[0055] When the construction is completed and the data is summarized, the problem work order can be exported with one click to generate a Word document containing information such as problem description, creation date, ship section, associated model, participants, reviewers, problem photos, etc., so that the construction problem records can be retained and convenient for later inspection and summary.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A ship intelligent construction collaborative management method based on BIM / AR fusion technology, characterized by: The steps include: S1. Preprocess the model file, segment it into a model family, and combine it with the attribute information file to connect the attribute information to form a segmented model; S2. Summarize the segmented models in the AR software to integrate the entire ship model and integrate the model with the real scene of the construction site in real time; S3. Each model family can be independently selected and set to either hidden or visible. By using the completed model family components as the background on the mobile terminal, you can manually hide model families not relevant to the current process and display the model families to be constructed and their attribute information. S4. Enter the process name in the PC timeline, select the construction start and duration of the model family components, and bind them to each model family. The order in which the model families appear and disappear is consistent with the ship construction plan schedule; S5. After the components at the construction site are installed, check whether there is any deviation between the position of the components at the construction site and the position of the model family components in the model.

2. According to claim 1, a ship intelligent construction collaborative management method based on BIM / AR fusion technology is characterized in that: Step S1 includes: Import the model file, divide the model into segments, extract all part names in each segment, and save each part as an independent model family; The independently saved model family and attribute information file are automatically bound based on key-value matching and batch injection methods.

3. The ship intelligent construction collaborative management method based on BIM / AR fusion technology according to claim 2 is characterized in that: In step S1, the model is divided into sections, namely, the hull, piping, equipment, and outfitting. Each section is composed of a number of parts.

4. The ship intelligent construction collaborative management method based on BIM / AR fusion technology according to claim 3 is characterized in that: After the "automatic binding" described in step S1, the model family with attribute binding is integrated into segmented models of the hull, piping, equipment, and outfitting.

5. The ship intelligent construction collaborative management method based on BIM / AR fusion technology according to claim 1 is characterized in that: Step S2 includes: Uploading the segmented model including attribute information to the AR software and dividing it into construction areas; The segmented models are aggregated in the AR software using a unified origin coordinate system to achieve integration of the overall ship model; The marking points are obtained in the overall ship model and the construction site, and the rigid body transformation matrix is ​​constructed through the coordinates of the marking points in the world coordinate system and the equipment coordinate system, and the model is superimposed on the real space of the construction site.

6. The ship intelligent construction collaborative management method based on BIM / AR fusion technology according to claim 5 is characterized in that: After "uploading the segmented model containing attribute information to the AR software" in step S2, the face reduction method and the face merging method are used to enable each segmented model to retain three-dimensional features and mesh features while reducing the number of faces.

7. The ship intelligent construction collaborative management method based on BIM / AR fusion technology according to claim 5 or 6 is characterized in that: The "obtaining marking points in the overall ship model and the construction site" in step S2 includes: Input the coordinate information of any two points in the overall ship model into the AR software; Place the intelligent positioning device at any location on the construction site to obtain the latitude and longitude information of that location.

8. The method for ship intelligent construction collaborative management based on BIM / AR fusion technology according to any one of claims 1, 4, and 6, characterized in that: Step S3 further includes: The model family component in the mobile terminal is linked to a construction guidance document, which includes a welding process or equipment installation method animation, construction drawings, and construction specifications.

9. The ship intelligent construction collaborative management method based on BIM / AR fusion technology according to claim 1 is characterized in that: Step S5 includes: Based on intelligent positioning equipment, check and compare the position, size, and orientation of each component with the model family and its attribute information; If there are any deviations during the verification and comparison, the spatial measurement tool on the mobile terminal can be used to measure the position deviations between the model family components and the components on the construction site in real time, and a notification will be sent through the mobile terminal.

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