A method of measuring and checking house construction based on BIM model

Abstract

The present invention discloses a method for measuring and proofreading house construction based on a BIM model, including: S1, connecting a scanner to a controller through a transmission module, the controller is connected to a control panel, the BIM model is imported into the controller through the control panel, and the room name, the modified theoretical room size, the selected measured items, the design thickness, and the measured deviation control value are input; S2, the controller automatically generates the position and direction of the measured control point according to the theoretical room size, moves the scanner to the measured control point, and clicks data acquisition; S3, according to the selected measured items, the room is automatically scanned by a scanner, and the scanned data is transmitted to the controller; S4, the controller converts the scanned data into a scanned three-dimensional model, and compares and obtains the position exceeding the measured deviation control value. The present invention can automatically check the quality of the house data after the construction project, and is conducive to later verification.

Description

Technical Field

[0001] The present invention relates to the technical field of construction detection, and in particular to a house construction actual measurement and proofreading method based on a BIM model. Background Art

[0002] BIM technology is the abbreviation of Building Information Modeling. Its purpose is to help realize the integration of building information, so that all parties can work together, effectively improve work efficiency, save resources, and achieve sustainable development. Therefore, BIM is an important carrier for feedback information and ultimately guide on-site construction. However, on-site construction includes many construction projects, and there are differences in house data after the completion of different construction projects. The BIM model cannot guide the deviation between the house data after different construction projects and the size required by the specifications. In addition, the workload of quality inspection after the completion of construction is huge and the data is difficult to verify later. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] Based on the above problems, the present invention provides a house construction actual measurement and proofreading method based on the BIM model, so as to automatically check the quality of house data after the construction project and facilitate later verification.

[0005] (II) Technical solution

[0006] Based on the above technical problems, the present invention provides a method for measuring and checking house construction based on a BIM model, comprising the following steps:

[0007] S1. Connect the scanner to the controller through the transmission module, and the controller is connected to the control panel. The control panel includes a display screen, an input keyboard and an import interface. The BIM model is imported into the controller through the import interface. The room name, the modified theoretical room size, the selected measured item, the design thickness, and the measured deviation control value are input on the control panel;

[0008] S2. The controller automatically generates the position and direction of the measured control point according to the theoretical room size or the modified theoretical room size obtained from the BIM model, moves the scanner to the measured control point, and clicks data acquisition;

[0009] S3, automatically scanning the room through a scanner according to the selected measured items, and transmitting the scanned data to a controller through a transmission module;

[0010] S4. The controller converts the scanned data into a scanned 3D model, processes the BIM model according to the designed thickness, compares the scanned 3D model with the processed BIM model, and obtains a position exceeding the measured deviation control value.

[0011] Furthermore, after step S4, it also includes: S5, marking the position exceeding the measured deviation control value in the BIM model, marking it in the plane drawing reversely converted from the BIM model, displaying it on the display screen of the control panel, and generating a data report.

[0012] Furthermore, the measured items include concrete measurement items, masonry measurement items, plastering measurement items, painting measurement items, and decoration measurement items.

[0013] Furthermore, the measured deviation control value is updated according to current specifications or input through a control panel.

[0014] Further, when the modified theoretical room size is input, the theoretical room size in the corresponding BIM model is replaced.

[0015] Furthermore, the step S3 includes:

[0016] S3.1, judging the selected measured item, if it is a concrete measured item, proceeding to step S3.2, if it is a masonry measured item, proceeding to step S3.3, if it is a plaster measured item, proceeding to step S3.4, if it is a painting measured item, proceeding to step S3.5, if it is a decoration measured item, proceeding to step S3.6;

[0017] S3.2, respectively scan the cross-sectional area, surface flatness and verticality data;

[0018] S3.3, respectively scan the surface flatness and verticality data;

[0019] S3.4. Scan the surface flatness, verticality, and squareness of the corners respectively;

[0020] S3.5. Scan the surface flatness, verticality, and squareness of the corners respectively;

[0021] S3.6. Scan the surface flatness, verticality, and squareness of the corners respectively.

[0022] Furthermore, the data scanning of the cross-sectional area is as follows: the same wall or cylindrical surface is taken as one measuring area, and the cross-sectional dimensions of each measuring area are measured once at 300 mm and 1500 mm upward from the ground.

[0023] Furthermore, the surface flatness data scan is:

[0024] B1. Take each wall as a measurement area; select two corners of the wall, scan them once at 45 degrees, and scan them once horizontally at the middle position 30 cm above the ground;

[0025] B2. Determine whether the wall length is greater than 3 meters. If not, proceed to the next step. If yes, scan horizontally once at the middle of the wall length.

[0026] B3. Determine whether there are doors, windows or corridor openings in the wall. If so, perform a cross scan at a 45-degree angle at each opening. If not, end the scan. The straight line length of each scan shall not be less than 2 meters.

[0027] Furthermore, the data scan of the verticality is:

[0028] C1. Take each wall as a measurement area; scan vertically from the top of the wall once at a horizontal distance of 30cm from the corner of one side, and scan vertically from the bottom of the wall once at a horizontal distance of 30cm from the corner of the other side;

[0029] C2. Determine whether the length of the wall is greater than 3 meters. If not, proceed to the next step. If yes, scan vertically once in the middle of the wall.

[0030] C3. Determine whether there is a door, window or corridor opening in the wall. If so, scan vertically once on both sides of the opening; if not, end the scan; the straight line length of each scan shall not be less than 2 meters.

[0031] Furthermore, the data scanning of the square internal and external corners is as follows: taking any internal corner or external corner of each wall as a measuring area; scanning once at a position 30 cm or 150 cm above the ground respectively, and the scanned line segments are two line segments parallel to the ground and perpendicular to each other on the internal corner or external corner.

[0032] (III) Beneficial effects

[0033] The above technical solution of the present invention has the following advantages:

[0034] (1) The present invention realizes automatic scanning and actual measurement proofreading of different housing construction projects, and performs targeted scanning and actual measurement proofreading of actual measurement projects at different construction stages, such as concrete actual measurement projects, masonry actual measurement projects, plastering actual measurement projects, painting actual measurement projects, and decoration actual measurement projects. The proofreading effect is better, which is conducive to the automatic implementation and data storage of a large number of inspections, so as to facilitate the later verification of unqualified locations;

[0035] (2) The present invention does not scan the entire room, but selects representative scanning line segments for scanning types such as cross-sectional area, surface flatness, verticality, and squareness of corners, thereby reducing the amount of data collection and data processing and improving the efficiency of actual measurement and calibration work;

[0036] (3) The present invention automatically selects measured control points according to the room size, which is beneficial for the scanner to have a better field of view for comprehensive scanning and further improves the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present invention in any way. In the accompanying drawings:

[0038] Figure 1 It is a flow chart of a method for measuring and checking house construction based on a BIM model according to an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of a scanning line segment of a cross-sectional area according to an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of scanning line segments of surface flatness according to an embodiment of the present invention;

[0041] Figure 4 A schematic diagram of a scanning line segment of verticality according to an embodiment of the present invention;

[0042] Figure 5 Schematic diagram of scanning line segments with square positive and negative corners according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0044] The present invention discloses a method for measuring and checking house construction based on a BIM model, as shown in the figure:

[0045] S1. Connect a fully scanning laser scanner to a controller through a transmission module. The controller is connected to a control panel. The control panel includes a display screen, an input keyboard, and an import interface. The BIM model is imported into the controller through the import interface. The room name, modified theoretical room size, selected measured items, design thickness, and measured deviation control value are input on the control panel.

[0046] The measured items include but are not limited to concrete measured items, masonry measured items, plaster measured items, coating measured items, decoration measured items, etc., which are carried out in sequence according to the construction progress; the controller will timely update the measured deviation control value of each measured item according to the current specifications, and the measured deviation control value required by the unit internally can also be input through the control panel; when the room size in the BIM model is changed, the theoretical room size is input through the control panel, and the input theoretical room size takes precedence over the theoretical room size in the imported BIM model;

[0047] S2. The controller automatically generates the position and direction of the measured control point according to the theoretical room size or the modified theoretical room size obtained from the BIM model, moves the laser scanner to the measured control point, and clicks data acquisition;

[0048] The position of the measured control point is generally the center of the room, so that the scanner has a good field of view for comprehensive scanning; the scanner ensures a comprehensive scanning field of view, and the scanner type is not limited. It can be a scanner supported by a bracket that can rotate 360 ​​degrees and move up and down, or a scanner with automatically controlled movement, etc.

[0049] S3. According to the selected measured items, the room is automatically scanned by a scanner, and the scanned data is transmitted to the controller by a transmission module; the scanning method of the scanner is different according to the selected measured items, including the following:

[0050] S3.1, judging the selected measured item, if it is a concrete measured item, proceeding to step S3.2, if it is a masonry measured item, proceeding to step S3.3, if it is a plaster measured item, proceeding to step S3.4, if it is a painting measured item, proceeding to step S3.5, if it is a decoration measured item, proceeding to step S3.6;

[0051] Concrete measurement items: S3.2, data scanning of cross-sectional area, surface flatness and verticality respectively;

[0052] Masonry measurement items: S3.3, respectively scan the surface flatness and verticality data;

[0053] Plastering measurement items: S3.4, respectively scan the surface flatness, verticality, and squareness of the inner and outer corners;

[0054] Painting measurement items: S3.5, data scanning of surface flatness, verticality, and squareness of positive and negative corners;

[0055] Decoration measurement items: S3.6, respectively scan the surface flatness, verticality, and squareness of the corners;

[0056] Among them, the scanning methods for cross-sectional area, surface flatness, verticality, and squareness of corners are:

[0057] A. Cross-sectional area Figure 2 As shown: the same wall or column is taken as one measuring area, and the cross-sectional dimensions of each measuring area are measured once at 300mm and 1500mm from the ground upwards;

[0058] B. Surface flatness Figure 3 As shown:

[0059] B1. Take each wall as a measurement area; select two corners of the wall, scan them once at 45 degrees, and scan them once horizontally at the middle position 30 cm above the ground;

[0060] B2. Determine whether the wall length is greater than 3 meters. If not, proceed to the next step. If yes, scan horizontally once at the middle of the wall length.

[0061] B3. Determine whether there are doors, windows or passage openings in the wall. If yes, cross scan once at each opening at a 45-degree angle. If no, end the scan. The length of each scanning line segment shall not be less than 2 meters.

[0062] C. Verticality Figure 4 As shown:

[0063] C1. Take each wall as a measurement area; scan vertically from the top of the wall once at a horizontal distance of 30cm from the corner of one side, and scan vertically from the bottom of the wall once at a horizontal distance of 30cm from the corner of the other side;

[0064] C2. Determine whether the length of the wall is greater than 3 meters. If not, proceed to the next step. If yes, scan vertically once in the middle of the wall.

[0065] C3. Determine whether there is a door, window or corridor opening in the wall. If yes, scan vertically once on both sides of the opening. If no, end the process. The length of each scanning line segment shall not be less than 2 meters.

[0066] D. The yin and yang angles are just like Figure 5 As shown: any inner corner or outer corner of each wall is taken as a measurement area; scan once at a position 30cm or 150cm above the ground respectively, and the scanned line segments are two line segments parallel to the ground and perpendicular to each other at the inner corner or outer corner;

[0067] The scanner compares the actual position of the scanning line segment with the theoretical position of the surface flatness, verticality or squareness of the corners of the segment. If the maximum value of the deviation is within the allowable deviation range, that is, the corresponding measured deviation control value, then the calculation point of the qualified rate of the measured indicator is qualified.

[0068] The measured items include but are not limited to concrete measurement items, masonry measurement items, plastering measurement items, painting measurement items, and decoration measurement items. The data scanning types included in each measured item include but are not limited to cross-sectional area, surface flatness, verticality, and squareness of corners. Additions and modifications are made based on the actual measured items and data scanning types.

[0069] S4, the controller converts the scanned data into a scanned 3D model, processes the BIM model according to the designed thickness, compares the scanned 3D model with the processed BIM model, and obtains a position exceeding the measured deviation control value;

[0070] The design thickness of different measured items is different. The BIM model is processed according to the input design thickness. For example, if the plastering thickness increases the wall by 2 cm on both sides, the processed BIM model is compared with the scanned 3D model of the plastering measured item, which can more easily compare the positions that exceed the measured deviation control value.

[0071] The maximum deviation obtained by comparison is compared with the measured deviation control value. The measured deviation control values ​​for different measured items are different, as shown in the following table:

[0072]

[0073]

[0074] S5. Mark the position exceeding the measured deviation control value in the BIM model, mark it in the plane drawing reversely converted from the BIM model, display it on the display screen of the control panel, and generate a data report.

[0075] In addition, the proofreading time of the actual measurement project completed in the current room is saved, and the estimated time of the next actual measurement project in the current room is displayed, so as to reasonably schedule the actual measurement projects in each room.

[0076] The data report includes but is not limited to: inspection time, inspection building number, inspection floor, inspection room, inspector, room size, inspection items, inspection specification limits, inspection actual control values, floor plan location, etc.

[0077] In summary, the above-mentioned BIM model-based house construction measurement and proofreading method has the following beneficial effects:

[0078] (1) The present invention realizes automatic scanning and actual measurement proofreading of different housing construction projects, and performs targeted scanning and actual measurement proofreading of actual measurement projects at different construction stages, such as concrete actual measurement projects, masonry actual measurement projects, plastering actual measurement projects, painting actual measurement projects, and decoration actual measurement projects. The proofreading effect is better, which is conducive to the automatic implementation and data storage of a large number of inspections, so as to facilitate the later verification of unqualified locations;

[0079] (2) The present invention does not scan the entire room, but selects representative scanning line segments for scanning types such as cross-sectional area, surface flatness, verticality, and squareness of corners, thereby reducing the amount of data collection and data processing and improving the efficiency of actual measurement and calibration work;

[0080] (3) The present invention automatically selects measured control points according to the room size, which is beneficial for the scanner to have a better field of view for comprehensive scanning and further improves the degree of automation.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A method for measuring and checking house construction based on BIM model, characterized in that: The following steps are involved: S1. Connect the scanner to the controller through the transmission module, and the controller is connected to the control panel. The control panel includes a display screen, an input keyboard and an import interface. The BIM model is imported into the controller through the import interface. The room name, the modified theoretical room size, the selected measured item, the design thickness, and the measured deviation control value are input on the control panel; S2. The controller automatically generates the position and direction of the measured control point according to the theoretical room size or the modified theoretical room size obtained from the BIM model, moves the scanner to the measured control point, and clicks data acquisition; S3, automatically scanning the room through a scanner according to the selected measured items, and transmitting the scanned data to a controller through a transmission module; S4. The controller converts the scanned data into a scanned 3D model, processes the BIM model according to the designed thickness, compares the scanned 3D model with the processed BIM model, and obtains a position exceeding the measured deviation control value.

2. The method for measuring and checking house construction based on the BIM model according to claim 1, characterized in that: Step S4 also includes: S5, marking the position exceeding the measured deviation control value in the BIM model, marking it in the plane drawing reversely converted from the BIM model, displaying it on the display screen of the control panel, and generating a data report.

3. The method for measuring and checking house construction based on the BIM model according to claim 1, characterized in that: The measured items include concrete measurement items, masonry measurement items, plastering measurement items, painting measurement items, and decoration measurement items.

4. The method for measuring and checking house construction based on the BIM model according to claim 1, characterized in that: The measured deviation control value is updated according to the current specification or input through the control panel.

5. The method for measuring and checking house construction based on the BIM model according to claim 1 is characterized in that: When the modified theoretical room size is input, the theoretical room size in the corresponding BIM model is replaced.

6. The method for measuring and checking house construction based on the BIM model according to claim 1 is characterized in that: The step S3 comprises: S3.1, judging the selected measured item, if it is a concrete measured item, proceeding to step S3.2, if it is a masonry measured item, proceeding to step S3.3, if it is a plaster measured item, proceeding to step S3.4, if it is a painting measured item, proceeding to step S3.5, if it is a decoration measured item, proceeding to step S3.6; S3.2, respectively scan the cross-sectional area, surface flatness and verticality data; S3.3, respectively scan the surface flatness and verticality data; S3.

4. Scan the surface flatness, verticality, and squareness of the corners respectively; S3.

5. Scan the surface flatness, verticality, and squareness of the corners respectively; S3.

6. Scan the surface flatness, verticality, and squareness of the corners respectively.

7. The method for measuring and checking house construction based on the BIM model according to claim 6 is characterized in that: The data scanning of the cross-sectional area is as follows: the same wall or cylindrical surface is taken as one measuring area, and the cross-sectional dimensions of each measuring area are measured once at 300 mm and 1500 mm upward from the ground.

8. The method for measuring and checking house construction based on the BIM model according to claim 6 is characterized in that: The data scan of the surface flatness is: B1. Take each wall as a measurement area; select two corners of the wall, scan them once at 45 degrees, and scan them once horizontally at the middle position 30 cm above the ground; B2. Determine whether the wall length is greater than 3 meters. If not, proceed to the next step. If yes, scan horizontally once at the middle of the wall length. B3. Determine whether there are doors, windows or corridor openings in the wall. If so, perform a cross scan at a 45-degree angle at each opening. If not, end the scan. The straight line length of each scan shall not be less than 2 meters.

9. The method for measuring and checking house construction based on BIM model according to claim 6, characterized in that: The data scan of the verticality is: C1. Take each wall as a measurement area; scan vertically from the top of the wall once at a horizontal distance of 30cm from the corner of one side, and scan vertically from the bottom of the wall once at a horizontal distance of 30cm from the corner of the other side; C2. Determine whether the length of the wall is greater than 3 meters. If not, proceed to the next step. If yes, scan vertically once in the middle of the wall. C3. Determine whether there is a door, window or corridor opening in the wall. If so, scan vertically once on both sides of the opening; if not, end the scan; the straight line length of each scan shall not be less than 2 meters.

10. The method for measuring and checking house construction based on BIM model according to claim 6, characterized in that: The data scanning of the square internal and external corners is as follows: any internal corner or external corner of each wall is taken as a measuring area; a scan is performed once at a position 30 cm or 150 cm above the ground respectively, and the scanned line segments are two line segments parallel to the ground and perpendicular to each other on the internal corner or external corner.

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