Special-shaped curved glass curtain wall installation reverse modeling data acquisition method

Abstract

The invention provides a special-shaped curved glass curtain wall installation reverse modeling data acquisition method, which comprises the following steps: S1, carrying out three-dimensional modeling based on a design drawing of a glass curtain wall, numbering components, and blanking and manufacturing; s2, setting a plurality of observation points above the building according to the main structure of the building; s3, the component is scanned through three-dimensional laser scanning equipment on the basis of the positioning grids in the installation process; s4, constructing point cloud data based on a scanning result, and comparing the construction model with the three-dimensional model to obtain a construction error; s5, parameter revision is conducted on subsequent to-be-constructed components on the basis of the construction errors, the revised component parameters are input into the three-dimensional model for model revising, reverse modeling and the three-dimensional laser scanning technology are utilized, the installation data of the components are obtained in real time, the construction errors are accurately calculated, and problems in construction are found and corrected in time; and the mounting precision and quality of the special-shaped curved glass curtain wall are effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a reverse modeling data acquisition method for installing a special-shaped curved glass curtain wall. Background Art

[0002] Due to the complex geometric shape of special-shaped curved glass curtain walls, traditional installation methods mainly rely on the experience of construction workers and on-site measurements. These methods have problems such as low measurement accuracy, delayed error detection, and difficult construction adjustments. These methods are unable to meet the requirements of modern buildings for curtain wall installation quality and accuracy, and are prone to rework, resulting in low construction efficiency and increased costs.

[0003] Therefore, it is necessary to provide an improved technical solution to the above-mentioned deficiencies in the prior art. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and the present invention provides a method for collecting reverse modeling data for installing special-shaped curved glass curtain walls.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: A method for collecting reverse modeling data for installing a special-shaped curved glass curtain wall, comprising: Step S1, performing three-dimensional modeling based on the design drawings of the glass curtain wall, disassembling the three-dimensional model to obtain components, numbering the components and cutting and manufacturing them; Step S2, setting a plurality of observation points above the building according to the main structure of the building, and forming a positioning grid outside the building through each observation point; Step S3, installing the components from bottom to top, scanning the components with a three-dimensional laser scanning device based on the positioning grid during the installation process; Step S4: constructing point cloud data based on the scanning results, fitting the point cloud data to obtain a construction model, and comparing the construction model with the three-dimensional model to obtain the construction error; Step S5: revising parameters of components to be constructed subsequently based on the construction errors, inputting the revised component parameters into the three-dimensional model for model correction, and transmitting the revised component parameters to the manufacturer; Step S6, repeat steps S4-S5 until the component assembly construction is completed.

[0006] Preferably, in step S1, an error threshold corresponding to a component at each observation point is set based on the three-dimensional model, and the component is removed when the construction error exceeds the error threshold.

[0007] Preferably, three-dimensional laser scanning is continuously performed during component construction to obtain construction errors, and an alarm message is generated when the construction error exceeds an error threshold.

[0008] Preferably, the main body of the building is divided into multiple construction areas along the longitudinal direction based on the positioning grid. In the three adjacent construction areas from bottom to top, during the construction of a middle construction area, the components of the lower construction area are three-dimensionally scanned and modeled to correct the component parameters of the upper construction area, and the component parameters are synchronously sent to the manufacturer.

[0009] Preferably, the three-dimensional laser scanning device is installed on the aerial photography device to take pictures during the construction process as the construction progresses.

[0010] Preferably, observation points are formed by drawing points on the facade of the building body through measurement and layout, or by installing three-dimensional scanning positioning parts.

[0011] Preferably, in step S2, the three-dimensional modeling is fitted with the three-dimensional model, and in step S4, the construction model is overlapped with the positioning grid of the three-dimensional model to obtain the construction error.

[0012] Preferably, each component is marked and positioned in the three-dimensional model, and an electronic tag is set on the component. When the electronic tag is scanned by a scanning device, the scanned component is displayed in the three-dimensional model.

[0013] Beneficial Effects: This application utilizes reverse modeling and 3D laser scanning technology to acquire component installation data in real time, accurately calculate construction errors, and promptly identify and correct construction problems, effectively improving the installation accuracy and quality of special-shaped curved glass curtain walls. Continuous 3D laser scanning and error analysis, along with error-based parameter revisions for subsequent components, enable dynamic adjustments to the construction process, avoid rework and rectification due to accumulated errors, improve construction efficiency, and reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings and the accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. Among them: Figure 1 This is a flow chart of the construction method in a specific embodiment provided by the present invention. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0016] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0018] like Figure 1 As shown, a method for reverse modeling data collection for installation of an irregular curved glass curtain wall includes: step S1, performing 3D modeling based on the design drawings of the glass curtain wall, using professional architectural modeling software such as Revit, BIM, etc., to perform 3D modeling according to the design drawings of the glass curtain wall. During the modeling process, the irregular curved surface characteristics of the curtain wall are fully considered to ensure the accuracy of the model.

[0019] Disassemble the 3D model to obtain components, decompose the 3D model into multiple components, number the components and cut them for production. The components can be numbered according to factors such as type and location to facilitate subsequent management and construction.

[0020] Step S2: Use a total station or other measuring equipment to measure and lay out the main facade of the building. Set multiple observation points above the building according to the main structure of the building. The points should be evenly distributed to ensure that all parts of the building can be fully covered. A positioning grid is formed on the outside of the building through each observation point. The accuracy of the positioning grid should be controlled within ±3mm to meet the requirements of subsequent scanning and modeling.

[0021] Step S3, installing the components from bottom to top, and scanning the components with a three-dimensional laser scanning device based on the positioning grid during the installation process.

[0022] In step S4, point cloud data is constructed based on the scanning results. Point cloud processing software, such as CloudCompare, is used to process the scanned point cloud data. First, denoising is performed to remove noise points in the point cloud data. Then, filtering is performed to smooth the point cloud data. Finally, registration is performed to stitch the point cloud data from different perspectives into a complete point cloud model.

[0023] The point cloud data is fitted to obtain a construction model, which is then compared with the 3D model to determine construction errors. The ICP (Iterative Closest Point) algorithm is used to automatically match geometric features, aligning the construction model with the 3D model coordinate system. High-precision models are lightweighted (e.g., by reducing the number of facets) to improve computational efficiency. The construction model is then compared with the 3D model, and the construction errors are calculated by overlaying their positioning grids. For example, the deviation of a component in the X, Y, and Z directions can be calculated as the construction error.

[0024] In step S5, based on the construction errors, the parameters of the components in the subsequent construction area are revised, the revised component parameters are input into the three-dimensional model for model correction, and the revised component parameters are transmitted to the manufacturer, so as to achieve adaptive production of components in the subsequent construction area, thereby avoiding rework, and dividing multiple construction areas so that the construction errors in each area will not form a chain reaction, thereby ensuring construction quality.

[0025] Step S6, repeat steps S4-S5 until the component assembly construction is completed.

[0026] In an optional embodiment, in step S1, in order to avoid excessive errors, an error threshold corresponding to the component at each observation point is set based on the three-dimensional model, and the component is removed when the construction error exceeds the error threshold.

[0027] Since each observation point forms multiple independent construction areas, the curtain wall components are divided into multiple independent areas. The components in each construction area are manufactured independently, which is convenient for dynamic adjustment to adapt to the error value, effectively improving the convenience of adjusting the construction component parameters. In actual use, the error threshold is set according to the specific structure of the curtain wall. For components in some key positions, the error threshold can be set smaller to ensure installation accuracy; for components in some non-key positions, the error threshold can be appropriately relaxed.

[0028] In an optional embodiment, three-dimensional laser scanning is continuously performed during the component construction process to obtain construction errors, and an alarm message is generated when the construction error exceeds an error threshold.

[0029] The alarm information can be issued through the speaker installed at the construction site. At the same time, the specific error information and component location can be displayed on the display screen to remind construction personnel to take timely measures to deal with it.

[0030] In this embodiment, the main body of the building is divided into multiple construction areas along the longitudinal direction based on the positioning grid. In the three adjacent construction areas from bottom to top, during the construction of a middle construction area, the components of the lower construction area are three-dimensionally scanned and then modeled. According to the modeling results, the impact of the installation error of the lower component on the upper component is analyzed, so as to correct the component parameters of the upper construction area. For example, when the detection finds that there is a deviation in the installation of the lower component, it means that the parameters of the upper construction area need to be adjusted to compensate for the error. Therefore, the component parameters that need to be modified are synchronously sent to the manufacturer, and the manufacturer manufactures the components according to the new parameters to ensure the installation accuracy of the components.

[0031] Component parameter correction is carried out in three adjacent construction areas, which can achieve dynamic adjustment of component parameters without stopping work, thereby ensuring the construction progress.

[0032] The 3D laser scanning equipment is installed on the aerial photography equipment to take pictures during the construction process as the construction progresses. The aerial photography equipment is operated to scan the components. When scanning, it should be ensured that the scanning range covers the entire component and the scanning angle is appropriate to obtain accurate point cloud data.

[0033] In this embodiment, observation points are formed by drawing points on the facade of the building body through surveying and setting out, or by installing three-dimensional scanning positioning parts.

[0034] The positioning parts can be made of metal or plastic parts with specific shapes and logos to facilitate identification and positioning by three-dimensional laser scanning equipment.

[0035] In an optional embodiment, the three-dimensional modeling is fitted with the three-dimensional model in step S2 to obtain a three-dimensional model with a positioning grid. When comparing in step S4, the construction model is overlapped with the positioning grid of the three-dimensional model, and the positioning grid is used as an alignment point, which can improve the comparison accuracy and obtain accurate construction errors.

[0036] Mark and locate each component in the 3D model, assign a unique identifier to each component, and mark the component's location and related information in the 3D model.

[0037] Electronic tags are placed on components, and relevant information such as component number, size, and material is written into the tags. Scanning equipment reads the information from the tags and displays the corresponding components in the 3D model, allowing construction workers to quickly and accurately locate components and improve construction efficiency.

[0038] The scanning device is an electronic tag reading device. In this application, a three-dimensional software is set up in the computer to generate models and compare them. A wireless data receiving port is set up on the computer, and a data output port is provided on the aerial photography equipment. The data output port is connected to the wireless data receiving port through a wireless network to obtain the detected image information, and the image information is extracted to construct point cloud data, and then the construction model can be produced through the point cloud data.

[0039] The electronic tag reading device is connected to a handheld terminal (which can be a mobile phone) via a wired or wireless connection. The handheld terminal is wirelessly connected to a computer to transmit the read electronic tag information to the computer. The internal software of the computer locates the component in the three-dimensional model, and highlights it in the three-dimensional model through color change, highlighting, etc. and generates an image. At the same time, the generated image is transmitted to the handheld terminal, so that the component position can be obtained, and then the component installation can be guided to reduce the installation difficulty.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A reverse modeling data acquisition method for installation of special-shaped curved glass curtain wall, characterized in that: include: Step S1, performing three-dimensional modeling based on the design drawings of the glass curtain wall, disassembling the three-dimensional model to obtain components, numbering the components and cutting and manufacturing them; Step S2, setting a plurality of observation points above the building according to the main structure of the building, and forming a positioning grid outside the building through each observation point; Step S3, installing the components from bottom to top, scanning the components with a three-dimensional laser scanning device based on the positioning grid during the installation process; Step S4: constructing point cloud data based on the scanning results, fitting the point cloud data to obtain a construction model, and comparing the construction model with the three-dimensional model to obtain the construction error; Step S5: revising parameters of components to be constructed subsequently based on the construction errors, inputting the revised component parameters into the three-dimensional model for model correction, and transmitting the revised component parameters to the manufacturer; Step S6, repeat steps S4-S5 until the component assembly construction is completed.

2. The reverse modeling data acquisition method for installation of special-shaped curved glass curtain wall according to claim 1 is characterized in that: In step S1, an error threshold corresponding to a component at each observation point is set based on the three-dimensional model, and the component is removed when the construction error exceeds the error threshold.

3. The reverse modeling data acquisition method for installation of special-shaped curved glass curtain wall according to claim 2 is characterized in that: During the component construction process, 3D laser scanning is continuously performed to obtain construction errors, and an alarm message is generated when the construction error exceeds the error threshold.

4. The reverse modeling data acquisition method for installation of special-shaped curved glass curtain wall according to claim 1, characterized in that: Based on the positioning grid, the main body of the building is divided into multiple construction areas along the longitudinal direction. In the three adjacent construction areas from bottom to top, during the construction of a middle construction area, the components of the lower construction area are 3D scanned and modeled to correct the component parameters of the upper construction area, and the component parameters are synchronously sent to the manufacturer.

5. The reverse modeling data acquisition method for installation of special-shaped curved glass curtain wall according to claim 1, characterized in that: The 3D laser scanning equipment is installed on the aerial photography equipment to take pictures during the construction process as the construction progresses.

6. The reverse modeling data acquisition method for installation of special-shaped curved glass curtain wall according to claim 1, characterized in that: By measuring and setting out, points are drawn on the facade of the main building or three-dimensional scanning positioning parts are installed to form observation points.

7. The reverse modeling data acquisition method for installation of special-shaped curved glass curtain wall according to claim 1, characterized in that: In step S2, the three-dimensional model is fitted with the three-dimensional model, and in step S4, the construction model is overlapped with the positioning grid of the three-dimensional model to obtain the construction error.

8. The reverse modeling data acquisition method for installation of special-shaped curved glass curtain wall according to claim 1, characterized in that: Each component is marked and positioned in the three-dimensional model, and an electronic tag is set on the component. When the electronic tag is scanned by a scanning device, the scanned component is displayed in the three-dimensional model.

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