A method for locating interior spaces of a building using BIM software

Abstract

The application provides a method for building internal space positioning by using BIM software, and belongs to the technical field of building space positioning. The method for building internal space positioning by using BIM software specifically comprises the following steps: cleaning the building internal space; setting a scanning reference point in the building internal space; scanning the entire building internal space and the reference point, and generating space scanning information by using a scanning device; saving the space scanning information in the form of point cloud data on a computer by using the scanning device; importing the space scanning cloud data into BIM software, and matching the space scanning cloud data with building data; adjusting the matching of the space scanning cloud data with the building data according to requirements; outputting a scanning space BIM model; and determining the installation height of a device by using a height positioning device according to the scanning space BIM model. The application can simply and conveniently convert the space coordinate points in the BIM model into the actual building physical space.

Description

Technical Field

[0001] This invention belongs to the field of architectural spatial positioning technology, and more specifically, relates to a method for locating the internal space of a building using BIM software. Background Technology

[0002] Spatial positioning is essential in building construction because any deviation in the position of any component may cause the entire building to become unbalanced, or the inaccurate installation of equipment may greatly reduce its aesthetic appeal.

[0003] There are many methods for spatial positioning, including traditional manual measurement methods and modern digital measurement methods. Traditional methods involve manual measurement using tools such as set squares, levels, and depth gauges, while modern digital measurement methods utilize advanced technologies such as BIM, laser scanners, and GPS to accurately and quickly perform spatial positioning.

[0004] When using BIM technology to create a BIM model, it is easy to accurately locate the coordinates of the device in the air within the BIM model. However, considering the irregularity and complexity of the building itself, it is very difficult to convert the spatial coordinates in the BIM model into accurate coordinates within the actual physical space of the building. Summary of the Invention

[0005] In view of this, the present invention provides a method for locating the interior space of a building using BIM software, which can easily and conveniently convert the spatial coordinates of points in the BIM model into the actual physical space of the building.

[0006] This invention is implemented as follows:

[0007] This invention provides a method for locating the interior space of a building using BIM software, specifically including the following steps:

[0008] S01: Clean up the interior space of the building and reduce clutter inside the building;

[0009] S02: Prepare a scanning device, which is either a laser scanner or a camera, and the scanning device is compatible with BIM software;

[0010] S03: Set up scanning reference points inside the building space;

[0011] S04: Start the scanning device to scan the entire interior space of the building and the reference point; the scanning device generates spatial scanning information.

[0012] S05: The scanning device saves the spatial scanning information in the form of point cloud data on a computer to obtain spatial scanning cloud data;

[0013] S06: The spatial scanning cloud data is imported into the BIM software, and the spatial scanning cloud data is matched with the building data;

[0014] S07: Adjust the matching of the spatial scanning cloud data and building data according to requirements;

[0015] S08: Output scanned spatial BIM model;

[0016] S09: Determine the installation height of the device using a height positioning device based on the scanned space BIM model.

[0017] Based on the above technical solution, the method for locating the interior space of a building using BIM software can be further improved as follows:

[0018] Specifically, step S09, which involves determining the installation height of the device using a height positioning device based on the scanned space BIM model, includes the following steps:

[0019] Step 1: Based on the scanned space BIM model, use augmented reality or virtual reality technology to project three auxiliary positioning points onto the floor of the building's interior space, wherein the three auxiliary positioning points are on the same straight line;

[0020] Step 2: Calibrate the three auxiliary positioning points;

[0021] Step 3: Use the height positioning device and the auxiliary positioning point to determine the installation height of the device;

[0022] The height positioning device includes a lifting platform and a laser positioning device. The laser positioning device is fixed to the top of the lifting platform, and the lifting platform can change the height of the laser positioning device. The laser positioning device includes a positioning platform, a first laser emitting device, a second laser emitting device, a third laser emitting device, and a positioning laser emitting device. The first laser emitting device, the second laser emitting device, and the third laser emitting device are rotatably fixed to the positioning platform via the same fixed axis. The laser emitting end of the first laser emitting device points vertically to the ground. The second laser emitting device, the third laser emitting device, and the first laser emitting device have a fixed angle. The laser emitting ends of the second laser emitting device and the third laser emitting device point to the ground. The positioning laser emitting device is horizontally mounted on the positioning platform, and the laser emitted by the positioning laser emitting device is perpendicular to the laser emitted by the positioning platform.

[0023] The beneficial effects of adopting the above-mentioned improved scheme are as follows: Using a height positioning device to project laser points onto the ground at a fixed angle, and raising the lifting platform to make the three laser points coincide with the auxiliary positioning points, the purpose of determining the installation height of the device is achieved. It is easy to locate a point in space in the BIM model, but it is very difficult to map that point from the BIM model to the real space. Using a height positioning device, the auxiliary positioning points are located on the ground, i.e., a plane, where it is easier to find. Using the principle of a three-meter ruler, the installation height of the device in space can be quickly located. The operation method is simple and improves construction efficiency.

[0024] Furthermore, the first laser emitting device is equipped with a vertical level for adjusting the verticality of the first laser emitting device, and the positioning laser emitting device is equipped with a horizontal level for adjusting the horizontality of the positioning laser emitting device.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by installing a vertical level on the first laser emitting device and a horizontal level on the positioning laser emitting device, it is ensured that the laser emitted by the first laser emitting device is perpendicular to the ground, and the laser emitted by the positioning laser emitting device is parallel to the ground, thereby improving the positioning accuracy.

[0026] Furthermore, the positioning platform has an arc-shaped scale groove, the center of which coincides with the fixed axis center of the first laser emitting device, the second laser emitting device, and the third laser emitting device. An angle scale mark is located next to the scale groove. A pointer is installed on the first laser emitting device, the second laser emitting device, and the third laser emitting device. The pointer is attached to the edge of the scale groove and can point to the angle scale mark.

[0027] The beneficial effects of adopting the above-mentioned improvement scheme are: by setting a scale groove and a pointer, it is convenient to accurately adjust the included angle between the first laser emitting device, the second laser emitting device, and the third laser emitting device.

[0028] Furthermore, a rubber pad is provided between the first laser emitting device, the second laser emitting device, the third laser emitting device and the fixed shaft.

[0029] The beneficial effects of adopting the above-mentioned improvement scheme are: by setting rubber pads, the included angle positioning between the first laser emitting device, the second laser emitting device, and the third laser emitting device is more stable, preventing displacement during the extension of the lifting worktable.

[0030] Furthermore, the lifting work platform includes a non-extendable fixed base and multiple electrically telescopic rods that are fixed together. The electrically telescopic rods are fixed on the fixed base, and the positioning platform is fixed on the electrically telescopic rods.

[0031] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting up multiple combined and fixed electric telescopic rods, the lifting work platform can be stably extended to a longer length, which is convenient for building installation at higher positions.

[0032] Furthermore, a triangular fixing frame is fitted onto the lifting work platform.

[0033] The beneficial effects of adopting the above-mentioned improvement scheme are as follows:

[0034] By installing a triangular fixing frame on the lifting work platform, the stability of the lifting work platform is improved and the positioning accuracy is enhanced.

[0035] Furthermore, the specific steps for setting up scanning reference points in the interior space of the building in step S03 include the following:

[0036] Step 1: Prepare a laser rangefinder and connect it to the computer to import the measurement data into the BIM software;

[0037] Step 2: Use a laser rangefinder to measure the distance to the walls, ground, ceiling, doors and windows that need to be marked and record the measurement data;

[0038] Step 3: Import the measurement data into the BIM software, set it as the reference point, and record all coordinates and markings during the measurement process;

[0039] Step 4: Adjust the coordinate system of the BIM model to ensure that the corresponding points in the BIM model coincide with the reference points.

[0040] Furthermore, the specific method for adjusting the coordinate system of the BIM model in the fourth step to ensure that the corresponding points in the BIM model coincide with the reference points is as follows:

[0041] Step 1: Rotate one of the reference points as the reference point;

[0042] Step 2: Move the coordinate system of the reference point to align with the origin of the BIM model;

[0043] Step 3: Use the translation and rotation operations of the BIM model to make the orientation of the BIM model consistent with the orientation of the building's interior space, and move the BIM model to the reference point position;

[0044] Step 4: Verify whether the corresponding point in the BIM model coincides with the reference point. If they do not coincide, continue to adjust the coordinate system position of the BIM model until they coincide.

[0045] Furthermore, the specific method for projecting auxiliary positioning points onto the building's interior floor using augmented reality or virtual reality technology based on the scanned spatial BIM model in the first step is as follows:

[0046] Step 1: Choose an augmented reality or virtual reality technology platform, ensuring that the equipment and software are easy to use and manage;

[0047] Step 2: Import the BIM model into an augmented reality or virtual reality technology platform;

[0048] Step 3: Based on the BIM model and the coordinates of the reference points, write the corresponding program code and integrate it with augmented reality or virtual reality technology platforms to project auxiliary positioning points onto the ground inside the building.

[0049] Compared with existing technologies, the beneficial effects of the method for locating the interior space of a building using BIM software provided by this invention are: using a height positioning device to first locate on the ground, i.e., a plane, where auxiliary positioning points are easier to find, and using the principle of trigonometric functions, the installation height of the device in the space can be quickly located. The method is simple to use and improves construction efficiency. Attached Figure Description

[0050] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This invention provides a flowchart of a method for locating the interior space of a building using BIM software;

[0052] Figure 2 This is a schematic diagram of a height positioning device in a method for locating the interior space of a building using BIM software, provided by the present invention.

[0053] Figure 3 for Figure 2 Enlarged view of section A;

[0054] Figure 4 This invention provides a schematic diagram of the height positioning device in a method for locating the interior space of a building using BIM software.

[0055] The attached diagram lists the components represented by each number as follows:

[0056] 01. Lifting worktable; 011. Fixed base; 012. Electric telescopic rod; 021. Positioning platform; 0211. Scale groove; 022. First laser emitting device; 023. Second laser emitting device; 024. Third laser emitting device; 025. Positioning laser emitting device; 026. Pointer. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] like Figure 1 The image shown is a first embodiment of a method for locating the interior space of a building using BIM software provided by the present invention. This embodiment specifically includes the following steps:

[0063] S01: Clean up the interior space of the building and reduce clutter inside the building;

[0064] S02: Prepare the scanning equipment, which is either a laser scanner or a camera, and the scanning equipment must be compatible with the BIM software;

[0065] S03: Set up scanning reference points inside the building space;

[0066] S04: Start the scanning equipment to scan the entire interior space of the building and the reference points. The scanning equipment generates spatial scanning information.

[0067] S05: The scanning device saves the spatial scanning information in the form of point cloud data on the computer, thus obtaining spatial scanning cloud data;

[0068] S06: Import spatial scanning cloud data into BIM software and match the spatial scanning cloud data with the building data;

[0069] S07: Adjust the matching of spatial scanning cloud data and building data according to requirements;

[0070] S08: Output scanned spatial BIM model;

[0071] S09: Determine the installation height of the device using a height positioning device based on the scanned space BIM model.

[0072] BIM stands for Building Information Modeling, a digital information modeling technology widely used in architecture, engineering, and construction. BIM integrates various building-related information on a digital information platform, enabling full lifecycle management of buildings from conceptual design to construction and operation; it can also be called a building information model.

[0073] BIM technology can create digital building information models that contain various data about a building project, such as components, geometry, materials, supply chain, cost, time, and related data from various related areas (such as structure, MEP, and plumbing). With the help of BIM technology, all personnel and tools involved in the building process can work on the model, accelerating and improving decision-making and implementation.

[0074] When outputting a BIM model, based on the matching of scanned and building data, a high-fidelity BIM model can be output, which includes building elements such as interior layout, walls, doors and windows, floors, ceilings and beams. These models can be used for the design, construction and maintenance of buildings.

[0075] When using BIM technology to scan building spaces, it is also necessary to ensure that the scanning equipment can adapt to different lighting conditions and reflectivity, and is capable of capturing details and high precision. Furthermore, the processing and analysis of the scanned data requires professional technical support to ensure that the output BIM model is accurate, timely, and of high quality.

[0076] In the above technical solution, S09, determining the installation height of the device using a height positioning device based on the scanned space BIM model specifically includes the following steps:

[0077] Step 1: Based on the scanned spatial BIM model, use augmented reality or virtual reality technology to project three auxiliary positioning points onto the floor of the building's interior space. The three auxiliary positioning points are on the same straight line.

[0078] Step 2: Calibrate three auxiliary positioning points;

[0079] Step 3: Use a height positioning device and auxiliary positioning points to determine the installation height of the device;

[0080] The height positioning device includes a lifting platform 01 and a laser positioning device. The laser positioning device is fixed on the top of the lifting platform 01, and the lifting platform 01 can change the height of the laser positioning device. The laser positioning device includes a positioning platform 021, a first laser emitting device 022, a second laser emitting device 023, a third laser emitting device 024, and a positioning laser emitting device 025. The first laser emitting device 022, the second laser emitting device 023, and the third laser emitting device 024 are rotatably fixed on the positioning platform 021 via the same fixed axis. The laser emitting end of the first laser emitting device 022 points vertically to the ground. The second laser emitting device 023 and the third laser emitting device 024 have a fixed angle with the first laser emitting device 022. The laser emitting ends of the second laser emitting device 023 and the third laser emitting device 024 point to the ground. The positioning laser emitting device 025 is horizontally installed on the positioning platform 021, and the positioning laser emitting device 025 is perpendicular to the laser emitted by the positioning platform 021.

[0081] Furthermore, in the above technical solution, the first laser emitting device 022 is equipped with a vertical level for adjusting the verticality of the first laser emitting device 022, and the positioning laser emitting device 025 is equipped with a horizontal level for adjusting the horizontality of the positioning laser emitting device 025.

[0082] Furthermore, in the above technical solution, the positioning stage 021 has an arc-shaped scale groove 0211. The center of the scale groove 0211 coincides with the fixed axis center of the first laser emitting device 022, the second laser emitting device 023, and the third laser emitting device 024. An angle scale mark is located next to the scale groove 0211. A pointer 026 is installed on the first laser emitting device 022, the second laser emitting device 023, and the third laser emitting device 024. The pointer 026 is attached to the edge of the scale groove 0211 and can point to the angle scale mark.

[0083] Furthermore, in the above technical solution, the first laser emitting device 022, the second laser emitting device 023, the third laser emitting device 024 and the fixed shaft are provided with rubber pads.

[0084] Furthermore, in the above technical solution, the lifting worktable 01 includes a non-extendable fixed base 011 and multiple combined and fixed electric telescopic rods 012. The electric telescopic rods 012 are fixed on the fixed base 011, and the positioning table 021 is fixed on the electric telescopic rods 012.

[0085] The height positioning device utilizes the principle of a three-meter ruler in reverse, based on the Pythagorean theorem: the sum of the squares of the two legs of a triangle is equal to the square of the hypotenuse. For example, if the two legs of a three-meter ruler are 1.5 meters long, and a hypotenuse is connected between them, the ruler will form a right triangle. The length of the hypotenuse is... The height of a three-meter ruler is constant. When measuring, one leg of the ruler can be placed on the object to be measured, making it perpendicular to the horizontal plane, and the other leg used for vertical measurement. For inclined objects, the Pythagorean theorem can be used to measure their height. One leg is placed on the inclined surface of the object, making the right angle perpendicular, and then the length of the hypotenuse is calculated using the Pythagorean theorem; this is the measured height of the object.

[0086] The three auxiliary positioning points are named from right to left as: first positioning point, second positioning point, and third positioning point. The distance between the first positioning point and the second positioning point is d1, and the distance between the first positioning point and the third positioning point is d2.

[0087] The installation design height of the device is H. The angle between the lasers emitted by the first laser emitting device 022 and the second laser emitting device 023 is α1, and the angle between the third laser emitting device 024 and the first laser emitting device 022 is α2. The length path of the laser emitted by the second laser emitting device 023 is denoted as l1, and the length path of the laser emitted by the third laser emitting device 024 is denoted as l1.

[0088] Sine Law: sinα1=d1 / l1; sinα2=d2 / l2;

[0089] Law of Cosines: cosα1=H / l1;cosα2=H / l2;

[0090] Tangent theorem: tanα1=d1 / H; tanα2=d2 / H;

[0091] According to the Law of Cosines: l1 = H / cosα1; l2 = H / cpsα2;

[0092] Using the law of sines, the length of the other leg d1 can be found.

[0093] That is: d1 = l1 * sinα1;

[0094] d1 = l1 * sinα2;

[0095] Therefore, the length between the laser point of the second laser emitting device 023 on the ground and the first laser emitting device 022 on the ground, i.e., the distance between the first positioning point and the second positioning point, can be calculated as d1, and the length between the laser point of the third laser emitting device 024 on the ground and the first laser emitting device 022 on the ground, i.e., the distance between the first positioning point and the third positioning point, can be calculated as d2.

[0096] Therefore, after the auxiliary positioning points are marked on the ground, when the height positioning device is used, the angle between the lasers emitted by the first laser emitting device 022 and the second laser emitting device 023 is first fixed as α1, and the angle between the third laser emitting device 024 and the first laser emitting device 022 is fixed as α2. The laser irradiation point of the first laser emitting device 022 on the ground is aligned with the leftmost or rightmost auxiliary positioning point, i.e., the first positioning point. As the electric telescopic rod 012 extends, the positioning platform 021 raises the first laser emitting device 022, the second laser emitting device 023, the third laser emitting device 024, and the positioning laser emitting device 025 until the lasers emitted by the second laser emitting device 023 and the third laser emitting device 024 correspond to the second and third positioning points on the ground. At this time, the laser path emitted by the positioning laser emitting device 025 is at the installation design height of the device, H. The laser path is used to compare the device installed in the air.

[0097] Although setting up one laser emitting device is sufficient to achieve the positioning at the designed installation height, setting up two laser emitting devices—a second laser emitting device 023 and a third laser emitting device 024—can make the positioning more accurate.

[0098] Furthermore, in the above technical solution, a triangular fixing frame is fitted on the lifting worktable 01.

[0099] Furthermore, in the above technical solution, setting up scanning reference points in the interior space of the building in step S03 specifically includes the following steps:

[0100] Step 1: Prepare a laser rangefinder and connect it to the computer to import the measurement data into the BIM software;

[0101] Step 2: Use a laser rangefinder to measure the distance to the walls, ground, ceiling, doors and windows that need to be marked and record the measurement data;

[0102] Step 3: Import the measurement data into the BIM software, set it as a reference point, and record all coordinates and markings during the measurement process;

[0103] Step 4: Adjust the coordinate system of the BIM model to ensure that the corresponding points in the BIM model coincide with the reference points.

[0104] When setting up control points, adjustments need to be made based on the specific requirements of the measurement scenario, materials, lighting conditions, and other factors. Multiple control points should be used to ensure accuracy and precision, and the measurement data should be preprocessed and calibrated before processing and analyzing it.

[0105] Furthermore, in the above technical solution, the specific method for adjusting the coordinate system of the BIM model in step four to ensure that the corresponding points in the BIM model coincide with the reference points is as follows:

[0106] Step 1: Rotate one of the reference points as the baseline;

[0107] Step 2: Move the coordinate system of the reference point to align with the origin of the BIM model;

[0108] Step 3: Use the translation and rotation operations of the BIM model to make the orientation of the BIM model consistent with the orientation of the building's interior space, and move the BIM model to the reference point position.

[0109] Step 4: Verify whether the corresponding points in the BIM model coincide with the reference points. If they do not coincide, continue to adjust the coordinate system position of the BIM model until they coincide.

[0110] Furthermore, in the above technical solution, the specific method for projecting auxiliary positioning points onto the building's interior floor using augmented reality or virtual reality technology based on the scanned spatial BIM model in the first step is as follows:

[0111] Step 1: Choose an augmented reality or virtual reality technology platform, ensuring that the equipment and software are easy to use and manage;

[0112] Step 2: Import the BIM model into an augmented reality or virtual reality technology platform;

[0113] Step 3: Based on the BIM model and the coordinates of the reference points, write the corresponding program code and integrate it with augmented reality or virtual reality technology platforms to project auxiliary positioning points onto the ground inside the building.

[0114] Augmented reality or virtual reality technology platforms can use HoloLens, ARKit, Vuforia, etc.;

[0115] Augmented reality or virtual reality technology platforms can use HoloLens, ARKit, Vuforia, etc.;

[0116] Hololens is a virtual reality device launched by Microsoft. It is a head-mounted augmented reality device that can be used completely independently without the need for cable connection or synchronization with a computer or smartphone.

[0117] ARKit is an AR development platform launched by Apple at WWDC 2017. Developers can use this toolkit to create augmented reality applications for iPhone and iPad;

[0118] Vuforia Augmented Reality SDK uses computer vision technology to identify and capture planar images or simple 3D objects (such as boxes) in real time, allowing developers to place virtual objects through a camera viewfinder and adjust their position on a real background in front of the lens.

[0119] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for locating the interior space of a building using BIM software, characterized in that, Specifically, the following steps are included: S01: Clean up the interior space of the building and reduce clutter inside the building; S02: Prepare a scanning device, which is either a laser scanner or a camera, and the scanning device is compatible with BIM software; S03: Set up scanning reference points inside the building space; S04: Start the scanning device to scan the entire interior space of the building and the reference point; the scanning device generates spatial scanning information. S05: The scanning device saves the spatial scanning information in the form of point cloud data on a computer to obtain spatial scanning cloud data; S06: The spatial scanning cloud data is imported into the BIM software, and the spatial scanning cloud data is matched with the building data; S07: Adjust the matching of the spatial scanning cloud data and building data according to requirements; S08: Output scanned spatial BIM model; S09: Determine the installation height of the device using a height positioning device based on the scanned space BIM model; In step S09, determining the installation height of the device using a height positioning device based on the scanned space BIM model specifically includes the following steps: Step 1: Based on the scanned space BIM model, use augmented reality or virtual reality technology to project three auxiliary positioning points onto the floor of the building's interior space, wherein the three auxiliary positioning points are on the same straight line; Step 2: Calibrate the three auxiliary positioning points; Step 3: Use the height positioning device and the auxiliary positioning point to determine the installation height of the device; The height positioning device includes a lifting platform (01) and a laser positioning device. The laser positioning device is fixed to the top of the lifting platform (01), and the lifting platform (01) can change the height of the laser positioning device. The laser positioning device includes a positioning platform (021), a first laser emitting device (022), a second laser emitting device (023), a third laser emitting device (024), and a positioning laser emitting device (025). The first laser emitting device (022), the second laser emitting device (023), and the third laser emitting device (024) are connected by the same fixed platform. The shaft is rotatably fixed on the positioning platform (021). The laser emitting end of the first laser emitting device (022) points vertically to the ground. The second laser emitting device (023) and the third laser emitting device (024) have a fixed angle with the first laser emitting device (022). The laser emitting ends of the second laser emitting device (023) and the third laser emitting device (024) point to the ground. The positioning laser emitting device (025) is horizontally installed on the positioning platform (021). The positioning laser emitting device (025) is perpendicular to the laser emitted by the positioning platform (021). The positioning platform (021) has an arc-shaped scale groove (0211). The center of the scale groove (0211) coincides with the center of the fixed shaft of the first laser emitting device (022), the second laser emitting device (023), and the third laser emitting device (024). An angle scale mark is located next to the scale groove (0211). A pointer (026) is installed on the first laser emitting device (022), the second laser emitting device (023), and the third laser emitting device (024). The pointer (026) is attached to the edge of the scale groove (0211) and can point to the angle scale mark.

2. The method for locating the interior space of a building using BIM software according to claim 1, characterized in that, The first laser emitting device (022) is equipped with a vertical level for adjusting the verticality of the first laser emitting device (022), and the positioning laser emitting device (025) is equipped with a horizontal level for adjusting the horizontality of the positioning laser emitting device (025).

3. The method for locating the interior space of a building using BIM software according to claim 2, characterized in that, A rubber pad is provided between the first laser emitting device (022), the second laser emitting device (023), the third laser emitting device (024) and the fixed shaft.

4. The method for locating the interior space of a building using BIM software according to claim 3, characterized in that, The lifting work platform (01) includes a non-extendable fixed base (011) and multiple combined fixed electric telescopic rods (012). The electric telescopic rods (012) are fixed on the fixed base (011), and the positioning platform (021) is fixed on the electric telescopic rods (012).

5. A method for locating the interior space of a building using BIM software according to claim 4, characterized in that, A triangular fixing frame is fitted onto the lifting worktable (01).

6. The method for locating the interior space of a building using BIM software according to claim 5, characterized in that, The specific steps for setting up scanning reference points in the interior space of the building in step S03 include: Step 1: Prepare a laser rangefinder and connect it to the computer to import the measurement data into the BIM software; Step 2: Use a laser rangefinder to measure the distance to the walls, ground, ceiling, doors and windows that need to be marked and record the measurement data; Step 3: Import the measurement data into the BIM software, set it as the reference point, and record all coordinates and markings during the measurement process; Step 4: Adjust the coordinate system of the BIM model to ensure that the corresponding points in the BIM model coincide with the reference points.

7. A method for locating the interior space of a building using BIM software according to claim 6, characterized in that, The specific method for adjusting the coordinate system of the BIM model in the fourth step to ensure that the corresponding points in the BIM model coincide with the reference points is as follows: Step 1: Rotate one of the reference points as the reference point; Step 2: Move the coordinate system of the reference point to align with the origin of the BIM model; Step 3: Use the translation and rotation operations of the BIM model to make the orientation of the BIM model consistent with the orientation of the building's interior space, and move the BIM model to the reference point position; Step 4: Verify whether the corresponding point in the BIM model coincides with the reference point. If they do not coincide, continue to adjust the coordinate system position of the BIM model until they coincide.

8. A method for locating the interior space of a building using BIM software according to claim 7, characterized in that, The specific method for projecting auxiliary positioning points onto the floor of the building interior space using augmented reality or virtual reality technology based on the scanned spatial BIM model in the first step is as follows: Step 1: Choose an augmented reality or virtual reality technology platform, ensuring that the equipment and software are easy to use and manage; Step 2: Import the BIM model into an augmented reality or virtual reality technology platform; Step 3: Based on the BIM model and the coordinates of the reference points, write the corresponding program code and integrate it with augmented reality or virtual reality technology platforms to project auxiliary positioning points onto the ground inside the building.

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