Building facade pattern drawing method and system based on optical positioning assistance

Abstract

The invention relates to the technical field of building construction, and provides a building facade pattern drawing method and system based on optical positioning assistance, and the method comprises the steps: disassembling a design pattern of a building facade into a plurality of construction blocks according to geometric characteristics, and carrying out the construction plate division of each construction block; designing a building external wall panel for constructing a building external facade based on the construction plate division result and the design pattern, simulating the construction of the building external facade, performing three-dimensional measurement on the building external facade after simulation construction, correcting a design drawing of the building external wall panel based on a measurement result, and generating a digital building external wall panel draft capable of performing site construction; projecting the digital building external wall panel manuscript to a corresponding construction block of an actual building external facade, and positioning and calibrating the projected pattern; and contour line processing is carried out based on the projection pattern after positioning calibration, and drawing of the building facade pattern is completed. According to the invention, the construction efficiency and the pattern quality of building facade pattern drawing can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a method and system for drawing building facade patterns based on optical positioning assistance. Background Art

[0002] Traditional methods for drawing patterns on building facades usually include ground splicing and high-altitude direct drawing. These traditional methods have at least the following drawbacks:

[0003] Ground splicing method: It is necessary to draw the pattern on the ground in advance and splice the panels together. Transportation and hoisting can easily cause the pattern to be misaligned, and the splicing seams affect the overall continuity.

[0004] High-altitude direct mapping method: Limited by conventional positioning technology, it is difficult to achieve millimeter-level accuracy, and the high-altitude operation cycle is long and the safety risks are high.

[0005] To address the above issues, an innovative method that combines high-precision positioning and modular construction is urgently needed to improve construction efficiency and pattern quality. Summary of the Invention

[0006] The purpose of the present invention is to solve at least one technical problem in the background technology and provide a method and system for drawing building facade patterns based on optical positioning assistance.

[0007] To achieve the above objectives, the present invention provides a method for drawing a building facade pattern based on optical positioning assistance, comprising:

[0008] The design pattern of the building facade is broken down into several construction blocks according to geometric features, and each construction block is divided into construction panels;

[0009] Based on the construction plate division results and design patterns, the building facade panels are designed and constructed, and the building facade construction is simulated. After the simulation construction, the building facade is 3D measured. Based on the measurement results, the design drawings of the building facade panels are modified to generate a digital building facade panel draft that can be used for on-site construction;

[0010] Draw key contour lines on the digitized draft;

[0011] Project the digital building exterior wall panel draft after drawing the key contour lines onto the corresponding construction block of the actual building facade, and perform positioning calibration on the projected pattern;

[0012] The contour line is processed based on the projection pattern after positioning calibration to complete the drawing of the building facade pattern.

[0013] According to one aspect of the present invention, the step of breaking down the design pattern of the building facade into a plurality of construction blocks according to geometric features and dividing each construction block into construction panels includes:

[0014] The design pattern of the building facade is broken down into several construction blocks of uniform shape and size according to its geometric features. Each construction block is then divided into a single grid, with each grid corresponding to a construction board.

[0015] Each construction plate is numbered and a mapping relationship between the design pattern of the building facade and the construction plate is established.

[0016] According to one aspect of the present invention, a building exterior wall panel is designed and constructed based on the construction panel division results and the design pattern, and the building exterior wall panel is simulated and constructed. After the simulated construction, the building exterior wall panel is three-dimensionally measured, and the design drawing of the building exterior wall panel is modified based on the measurement results to generate a digital building exterior wall panel draft that can be used for on-site construction, including:

[0017] Based on the number of construction panels divided, a corresponding number of building exterior wall panels for constructing the building facade are designed;

[0018] Simulate the construction of building facades based on the designed building exterior wall panels and mapping relationships;

[0019] After the simulated construction, the building facade is measured in three dimensions to check the construction accuracy of the building exterior wall panels;

[0020] Based on the measurement results, the design drawings of the building exterior wall panels are modified to generate digital building exterior wall panel drafts that can be used for on-site construction.

[0021] According to one aspect of the present invention, the key contour lines are drawn on the digitized building exterior wall panel draft as follows:

[0022] Each part of the outer contour line is drawn on each digitized building exterior wall panel corresponding to the outer contour line of the design pattern of the building facade.

[0023] According to one aspect of the present invention, a digital building exterior wall panel draft with key contour lines drawn is projected onto a corresponding construction block of an actual building facade, and the projected pattern is positioned and calibrated, including:

[0024] Use a high-brightness outdoor laser projector with a brightness of ≥8000 lumens to project the digital building exterior wall panel draft onto the corresponding construction block of the actual building facade at a 1:1 ratio;

[0025] Combined with the total station, the key nodes of the projected pattern are calibrated again to ensure that the positioning error is ≤±5mm.

[0026] According to one aspect of the present invention, contour processing is performed based on the projection pattern after positioning calibration to complete the drawing of the building facade pattern, including:

[0027] Manually draw the contour line along the contour line in the projected pattern, and verify the continuity and curvature consistency of the contour line through visual inspection with a high-power telescope and measurement with a tape measure;

[0028] When there is a deviation in the outline, make local corrections based on the digitized building exterior wall panel draft;

[0029] Lay masking tape along the contour line and manually polish the base surface to a roughness of Ra = 20-30μm;

[0030] Spray primer, intermediate paint and topcoat in different construction areas, with an interval of ≥4h between each coat;

[0031] Use colorimeter and paint film thickness meter for quality acceptance.

[0032] To achieve the above-mentioned object, the present invention further provides a building facade pattern drawing system based on optical positioning assistance, comprising:

[0033] The construction block division module breaks down the design pattern of the building facade into several construction blocks according to geometric features, and divides each construction block into construction panels;

[0034] The module for generating digital building exterior wall panel drafts designs and constructs building exterior wall panels based on the construction panel division results and design patterns, simulates the construction of the building exterior wall, performs three-dimensional measurement of the building exterior wall after the simulation, modifies the building exterior wall panel design drawings based on the measurement results, and generates digital building exterior wall panel drafts that can be used for on-site construction;

[0035] Contour drawing module, drawing key contour lines on the digitized draft;

[0036] The pattern projection and positioning module projects the digital building exterior wall panel draft after drawing the key contour lines onto the corresponding construction block of the actual building facade, and calibrates the positioning of the projected pattern;

[0037] The contour processing module performs contour line processing based on the projected pattern after positioning calibration to complete the drawing of the building facade pattern.

[0038] To achieve the above-mentioned purpose, the present invention also provides an electronic device, including a processor, a memory, and a computer program stored in the memory and runnable on the processor. When the computer program is executed by the processor, the method for drawing a building facade pattern based on optical positioning assistance as described above is implemented.

[0039] To achieve the above objectives, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method for drawing a building facade pattern based on optical positioning assistance as described above is implemented.

[0040] According to the solution of the present invention, the present invention is suitable for the construction of complex artistic patterns on the facades of super-high-rise and large-span buildings. The present invention can effectively improve the construction efficiency and pattern quality of drawing patterns on the facades of buildings.

[0041] The present invention adopts optical positioning and dynamic calibration: laser projection combined with total station secondary calibration to achieve millimeter-level positioning accuracy at an altitude of 117.6m;

[0042] The present invention adopts modular construction: projecting and parallel operation of construction blocks, shortening the construction period by 30% and avoiding the problem of misaligned seams in traditional splicing;

[0043] The present invention can realize digital correction: dynamically adjust the CAD draft of the building exterior wall panel based on the measured data to ensure the continuity of complex lines (arcs, circles). BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A flowchart schematically illustrates a method for drawing a building facade pattern based on optical positioning assistance according to an embodiment of the present invention;

[0045] Figure 2 An exploded view schematically showing a construction block diagram of a design pattern for a building facade according to one embodiment of the present invention;

[0046] Figure 3 Schematically showing the division of a construction area into a single grid and the display of related contour lines according to one embodiment of the present invention. DETAILED DESCRIPTION

[0047] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only intended to enable those skilled in the art to better understand and implement the present invention, rather than to imply any limitation on the scope of the present invention.

[0048] As used herein, the term "including" and variations thereof are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment."

[0049] Figure 1 The flowchart of the method for drawing a building facade pattern based on optical positioning assistance according to one embodiment of the present invention is schematically shown. Figure 1 As shown, in this embodiment, the method for drawing a building facade pattern based on optical positioning assistance includes:

[0050] The design pattern of the building facade is broken down into several construction blocks according to geometric features, and each construction block is divided into construction panels;

[0051] Based on the construction plate division results and design patterns, the building facade panels are designed and constructed, and the building facade construction is simulated. After the simulation construction, the building facade is 3D measured. Based on the measurement results, the design drawings of the building facade panels are modified to generate a digital building facade panel draft that can be used for on-site construction;

[0052] Project the digital building exterior wall panel draft onto the corresponding construction block of the actual building facade and perform positioning calibration on the projected pattern;

[0053] The contour line is processed based on the projection pattern after positioning calibration to complete the drawing of the building facade pattern.

[0054] Further, Figure 2 An exploded view schematically showing a construction block diagram of a design pattern for a building facade according to one embodiment of the present invention; Figure 3 Schematic representation of a single grid division of a construction area and related contour line display according to one embodiment of the present invention. Figure 2 and Figure 3 As shown, in this embodiment, the design pattern of the building facade is disassembled into several construction blocks according to geometric features, and each construction block is divided into construction panels, including:

[0055] The design pattern of the building facade (such as Figure 2 The aircraft patterns in the figure are divided into several construction blocks of uniform shape and size according to their geometric features (such as A1-A3, B1-B4, C1-C3 of each aircraft pattern), and then each construction block is divided into a single grid (i.e. Figure 3 The grid is divided into rectangular grids with the same shape and size, and each grid corresponds to a construction board (that is, each grid is covered by a construction board);

[0056] Number each construction plate and establish a mapping relationship between the design pattern of the building facade and the construction plate. Figure 3 As shown, in this embodiment, each construction board in each construction block is numbered in the horizontal X and vertical Y order, thereby establishing a mapping relationship between the design pattern and the construction board. It is worth noting that Figure 3Only the numbers of the construction plates corresponding to the pattern outlines are shown, while the construction plates without pattern outlines are not shown with corresponding numbers. In fact, each construction plate needs to be numbered. The numbers of the numbered construction plates can be shown or not, as long as the mapping relationship between each construction plate and the overall pattern is clear.

[0057] Furthermore, according to one embodiment of the present invention, a building exterior wall panel for a building facade is designed based on the construction panel division results and the design pattern, and the building facade is simulated for construction. After the simulated construction, the building facade is three-dimensionally measured, and the design drawing of the building exterior wall panel is modified based on the measurement results to generate a digital building exterior wall panel draft that can be used for on-site construction, including:

[0058] Based on the number of divided construction panels, a corresponding number of building exterior wall panels (i.e., construction panels) for constructing the building facade are designed;

[0059] Draw key contour lines corresponding to the design pattern on the corresponding numbered building exterior wall panels;

[0060] Simulate the construction of the building facade based on the designed building exterior wall panels and mapping relationships; that is, install each building exterior wall panel into the corresponding grid of the corresponding construction block;

[0061] After the simulated construction, the building facade is measured in three dimensions to check the construction accuracy of the building exterior wall panels. After the simulated installation of each building exterior wall panel is completed, the size and position of the simulated construction pattern of the building facade are measured to check the construction accuracy of each building exterior wall panel (for example, whether the elevation deviation is ≤3mm, and whether the flatness deviation is ≤2mm / m). This can check whether the size and position accuracy of each building exterior wall panel and the contour lines on the related building exterior wall panels meet the requirements, providing a basis for subsequent adjustment and correction.

[0062] Based on the measurement results, the design drawings of the building exterior wall panels are modified (such as the size and position of the building exterior wall panels and the outline lines of the corresponding design patterns thereon), generating a digital building exterior wall panel draft that can be used for on-site construction. In this embodiment, based on the measurement and verification results, the design drawings of the building exterior wall panels are compared with actual requirements, and then optimized and modified according to actual requirements (for example, the design drawings are modified using CAD), thereby generating a digital building exterior wall panel draft that can be used for on-site construction.

[0063] Furthermore, according to one embodiment of the present invention, the key contour lines corresponding to the design pattern are drawn on the corresponding numbered building exterior wall panels as follows:

[0064] Draw the lines of each part of the outer contour line on each building exterior wall panel corresponding to the outer contour line of the design pattern of the building facade. Figure 3As shown, not all construction boards need to draw the contour lines of the above-mentioned design pattern. Instead, some lines are drawn on some corresponding construction boards according to the distribution of the design pattern. In this way, the entire design pattern is formed by assembling and combining multiple construction boards. Therefore, similarly, the corresponding contour lines are drawn on the corresponding building exterior wall panels.

[0065] Furthermore, according to one embodiment of the present invention, the digitized building exterior wall panel draft after key contour lines are drawn is projected onto the corresponding construction block of the actual building facade, and the projected pattern is positioned and calibrated, including:

[0066] Use a high-brightness outdoor laser projector with a brightness of ≥8000 lumens to project the digital building exterior wall panel draft onto the corresponding construction block of the actual building facade at a 1:1 ratio;

[0067] Combined with the total station, the key nodes of the projected pattern are calibrated again to ensure that the positioning error is ≤±5mm.

[0068] Furthermore, according to an embodiment of the present invention, contour processing is performed based on the projection pattern after positioning calibration to complete the drawing of the building facade pattern, including:

[0069] Manually draw the contour line along the contour line in the projected pattern, and verify the continuity and curvature consistency of the contour line through visual inspection with a high-power telescope and measurement with a tape measure;

[0070] When there is a deviation in the outline, make local corrections based on the digitized building exterior wall panel draft;

[0071] Lay masking tape along the contour line and manually polish the base surface to a roughness of Ra = 20-30μm;

[0072] Spray primer, intermediate paint and topcoat in different construction areas to form the building facade pattern, with each coat lasting ≥4h;

[0073] Use colorimeter and paint film thickness meter for quality acceptance.

[0074] In this embodiment, the base surface refers to the substrate on which the pattern is drawn. The substrate is, for example, a metal wall panel. When drawing a pattern on the metal wall panel, the metal wall panel has anti-corrosion plating and coating, which need to be polished off.

[0075] According to the above solution of the present invention, the present invention is suitable for the construction of complex artistic patterns on the facades of super-high-rise and large-span buildings. The present invention can effectively improve the construction efficiency and pattern quality of drawing patterns on building facades.

[0076] The present invention adopts optical positioning and dynamic calibration: laser projection combined with total station secondary calibration to achieve millimeter-level positioning accuracy at an altitude of 117.6m;

[0077] The present invention adopts modular construction: projecting and parallel operation of construction blocks, shortening the construction period by 30% and avoiding the problem of misaligned seams in traditional splicing;

[0078] The present invention can realize digital correction: dynamically adjust the CAD draft of the building exterior wall panel based on the measured data to ensure the continuity of complex lines (arcs, circles).

[0079] Furthermore, to achieve the above-mentioned purpose, the present invention also provides a building facade pattern drawing system based on optical positioning assistance, comprising:

[0080] The construction block division module breaks down the design pattern of the building facade into several construction blocks according to geometric features, and divides each construction block into construction panels;

[0081] The module for generating digital building exterior wall panel drafts designs and constructs building exterior wall panels based on the construction panel division results and design patterns, simulates the construction of the building exterior wall, performs three-dimensional measurement of the building exterior wall after the simulation, modifies the building exterior wall panel design drawings based on the measurement results, and generates digital building exterior wall panel drafts that can be used for on-site construction;

[0082] Contour drawing module, drawing key contour lines on the digitized draft;

[0083] The pattern projection and positioning module projects the digital building exterior wall panel draft after drawing the key contour lines onto the corresponding construction block of the actual building facade, and calibrates the positioning of the projected pattern;

[0084] The contour processing module performs contour line processing based on the projected pattern after positioning calibration to complete the drawing of the building facade pattern.

[0085] Further, Figure 2 An exploded view schematically showing a construction block diagram of a design pattern for a building facade according to one embodiment of the present invention; Figure 3 Schematic diagram showing the division of the construction area into a single grid according to one embodiment of the present invention. Figure 2 and Figure 3 As shown, in this embodiment, the design pattern of the building facade is disassembled into several construction blocks according to geometric features, and each construction block is divided into construction panels, including:

[0086] The design pattern of the building facade (such as Figure 2 The aircraft patterns in the figure are divided into several construction blocks of uniform shape and size according to their geometric features (such as A1-A3, B1-B4, C1-C3 of each aircraft pattern), and then each construction block is divided into a single grid (i.e. Figure 3The grid is divided into rectangular grids with the same shape and size, and each grid corresponds to a construction board (that is, each grid is covered by a construction board);

[0087] Number each construction plate and establish a mapping relationship between the design pattern of the building facade and the construction plate. Figure 3 As shown, in this embodiment, each construction board in each construction block is numbered in the horizontal X and vertical Y order, thereby establishing a mapping relationship between the design pattern and the construction board. It is worth noting that Figure 3 Only the numbers of the construction plates corresponding to the pattern outlines are shown, while the construction plates without pattern outlines are not shown with corresponding numbers. In fact, each construction plate needs to be numbered. The numbers of the numbered construction plates can be shown or not, as long as the mapping relationship between each construction plate and the overall pattern is clear.

[0088] Furthermore, according to one embodiment of the present invention, a building exterior wall panel for a building facade is designed based on the construction panel division results and the design pattern, and the building facade is simulated for construction. After the simulated construction, the building facade is three-dimensionally measured, and the design drawing of the building exterior wall panel is modified based on the measurement results to generate a digital building exterior wall panel draft that can be used for on-site construction, including:

[0089] Based on the number of divided construction panels, a corresponding number of building exterior wall panels (i.e., construction panels) for constructing the building facade are designed;

[0090] Draw key contour lines corresponding to the design pattern on the corresponding numbered building exterior wall panels;

[0091] Simulate the construction of the building facade based on the designed building exterior wall panels and mapping relationships; that is, install each building exterior wall panel into the corresponding grid of the corresponding construction block;

[0092] After the simulated construction, the building facade is measured in three dimensions to check the construction accuracy of the building exterior wall panels. After the simulated installation of each building exterior wall panel is completed, the size and position of the simulated construction pattern of the building facade are measured to check the construction accuracy of each building exterior wall panel (for example, whether the elevation deviation is ≤3mm, and whether the flatness deviation is ≤2mm / m). This can check whether the size and position accuracy of each building exterior wall panel and the contour lines on the related building exterior wall panels meet the requirements, providing a basis for subsequent adjustment and correction.

[0093] Based on the measurement results, the design drawings of the building exterior wall panels are modified (such as the size and position of the building exterior wall panels and the outline lines of the corresponding design patterns thereon), generating a digital building exterior wall panel draft that can be used for on-site construction. In this embodiment, based on the measurement and verification results, the design drawings of the building exterior wall panels are compared with actual requirements, and then optimized and modified according to actual requirements (for example, the design drawings are modified using CAD), thereby generating a digital building exterior wall panel draft that can be used for on-site construction.

[0094] Furthermore, according to one embodiment of the present invention, the key contour lines corresponding to the design pattern are drawn on the corresponding numbered building exterior wall panels as follows:

[0095] Draw the lines of each part of the outer contour line on each building exterior wall panel corresponding to the outer contour line of the design pattern of the building facade. Figure 3 As shown, not all construction boards need to draw the contour lines of the above-mentioned design pattern. Instead, some lines are drawn on some corresponding construction boards according to the distribution of the design pattern. In this way, the entire design pattern is formed by assembling and combining multiple construction boards. Therefore, similarly, the corresponding contour lines are drawn on the corresponding building exterior wall panels.

[0096] Furthermore, according to one embodiment of the present invention, the digitized building exterior wall panel draft after key contour lines are drawn is projected onto the corresponding construction block of the actual building facade, and the projected pattern is positioned and calibrated, including:

[0097] Use a high-brightness outdoor laser projector with a brightness of ≥8000 lumens to project the digital building exterior wall panel draft onto the corresponding construction block of the actual building facade at a 1:1 ratio;

[0098] Combined with the total station, the key nodes of the projected pattern are calibrated again to ensure that the positioning error is ≤±5mm.

[0099] Furthermore, according to an embodiment of the present invention, contour processing is performed based on the projection pattern after positioning calibration to complete the drawing of the building facade pattern, including:

[0100] Manually draw the contour line along the contour line in the projected pattern, and verify the continuity and curvature consistency of the contour line through visual inspection with a high-power telescope and measurement with a tape measure;

[0101] When there is a deviation in the outline, make local corrections based on the digitized building exterior wall panel draft;

[0102] Lay masking tape along the contour line and manually polish the base surface to a roughness of Ra = 20-30μm;

[0103] Spray primer, intermediate paint and topcoat in different construction areas, with an interval of ≥4h between each coat;

[0104] Use colorimeter and paint film thickness meter for quality acceptance.

[0105] According to the above solution of the present invention, the present invention is suitable for the construction of complex artistic patterns on the facades of super-high-rise and large-span buildings. The present invention can effectively improve the construction efficiency and pattern quality of drawing patterns on building facades.

[0106] The present invention adopts optical positioning and dynamic calibration: laser projection combined with total station secondary calibration to achieve millimeter-level positioning accuracy at an altitude of 117.6m;

[0107] The present invention adopts modular construction: projecting and parallel operation of construction blocks, shortening the construction period by 30% and avoiding the problem of misaligned seams in traditional splicing;

[0108] The present invention can realize digital correction: dynamically adjust the CAD draft of the building exterior wall panel based on the measured data to ensure the continuity of complex lines (arcs, circles).

[0109] Furthermore, to achieve the above-mentioned purpose, the present invention also provides an electronic device, including a processor, a memory, and a computer program stored in the memory and runnable on the processor. When the computer program is executed by the processor, the method for drawing a building facade pattern based on optical positioning assistance as described above is implemented.

[0110] Furthermore, to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method for drawing a building facade pattern based on optical positioning assistance as described above is implemented.

[0111] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0112] It should be understood that the size of the serial numbers of each step in the content of the invention and the implementation methods of the present invention does not absolutely mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the implementation methods of the present invention.

Claims

1. A method for drawing building facade patterns based on optical positioning assistance, characterized in that: include: The design pattern of the building facade is broken down into several construction blocks according to geometric features, and each construction block is divided into construction panels; Based on the construction plate division results and design patterns, the building facade panels are designed and constructed, and the building facade construction is simulated. After the simulation construction, the building facade is 3D measured. Based on the measurement results, the design drawings of the building facade panels are modified to generate a digital building facade panel draft that can be used for on-site construction; Project the digital building exterior wall panel draft onto the corresponding construction block of the actual building facade and perform positioning calibration on the projected pattern; The contour line is processed based on the projection pattern after positioning calibration to complete the drawing of the building facade pattern.

2. The method for drawing a building facade pattern based on optical positioning assistance according to claim 1, characterized in that: The design pattern of the building facade is disassembled into several construction blocks according to geometric features, and each construction block is divided into construction panels, including: The design pattern of the building facade is broken down into several construction blocks of uniform shape and size according to its geometric features. Each construction block is then divided into a single grid, with each grid corresponding to a construction board. Each construction plate is numbered and a mapping relationship between the design pattern of the building facade and the construction plate is established.

3. The method for drawing a building facade pattern based on optical positioning assistance according to claim 2, characterized in that: Based on the construction plate division results and design patterns, the building facade panels are designed and constructed, and the building facade construction is simulated. After the simulation construction, the building facade is measured in three dimensions. Based on the measurement results, the design drawings of the building facade panels are modified to generate a digital building facade panel draft that can be used for on-site construction, including: Based on the number of construction panels divided, a corresponding number of building exterior wall panels for constructing the building facade are designed; Draw key contour lines corresponding to the design pattern on the corresponding numbered building exterior wall panels; Simulate the construction of building facades based on the designed building exterior wall panels and mapping relationships; After the simulated construction, the building facade is measured in three dimensions to check the construction accuracy of the building exterior wall panels; Based on the measurement results, the design drawings of the building exterior wall panels are modified to generate digital building exterior wall panel drafts that can be used for on-site construction.

4. The method for drawing a building facade pattern based on optical positioning assistance according to claim 3, characterized in that: The key contour lines corresponding to the design pattern drawn on the corresponding numbered building exterior wall panels are: Each portion of the outer contour line is drawn on each building exterior wall panel corresponding to the outer contour line of the design pattern of the building facade.

5. The method for drawing a building facade pattern based on optical positioning assistance according to claim 4, characterized in that: Project the digital building exterior wall panel draft after drawing the key contour lines onto the corresponding construction block of the actual building facade, and perform positioning calibration on the projected pattern, including: Use a high-brightness outdoor laser projector with a brightness of ≥8000 lumens to project the digital building exterior wall panel draft onto the corresponding construction block of the actual building facade at a 1:1 ratio; Combined with the total station, the key nodes of the projected pattern are calibrated again to ensure that the positioning error is ≤±5mm.

6. The method for drawing a building facade pattern based on optical positioning assistance according to claim 5, characterized in that: Based on the projected pattern after positioning calibration, contour line processing is performed to complete the building facade pattern drawing, including: Manually draw the contour line along the contour line in the projected pattern, and verify the continuity and curvature consistency of the contour line through visual inspection with a high-power telescope and measurement with a tape measure; When there is a deviation in the outline, make local corrections based on the digitized building exterior wall panel draft; Lay masking tape along the contour line and manually polish the base surface to a roughness of Ra = 20-30μm; Spray paint in construction areas to form building facade patterns, with each coat lasting ≥4 hours; Use colorimeter and paint film thickness meter for quality acceptance.

7. The building facade pattern drawing system based on optical positioning assistance is characterized by: include: The construction block division module breaks down the design pattern of the building facade into several construction blocks according to geometric features, and divides each construction block into construction panels; The module for generating digital building exterior wall panel drafts designs and constructs building exterior wall panels based on the construction panel division results and design patterns, simulates the construction of the building exterior wall, performs three-dimensional measurement of the building exterior wall after the simulation, modifies the building exterior wall panel design drawings based on the measurement results, and generates digital building exterior wall panel drafts that can be used for on-site construction; Contour drawing module, drawing key contour lines on the digitized draft; The pattern projection and positioning module projects the digital building exterior wall panel draft after drawing the key contour lines onto the corresponding construction block of the actual building facade, and calibrates the positioning of the projected pattern; The contour processing module performs contour line processing based on the projected pattern after positioning calibration to complete the drawing of the building facade pattern.

8. An electronic device, characterized in that The invention comprises a processor, a memory and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the method for drawing a building facade pattern based on optical positioning assistance as described in any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for drawing a building facade pattern based on optical positioning assistance according to any one of claims 1 to 6 is implemented.

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