Reverse modeling method and device for building

Abstract

The invention discloses a reverse modeling method and device of a building, and relates to the technical field of reverse modeling of the architecture.The reverse modeling device of the building comprises a supporting seat, supporting legs are hinged to the lower portion of the supporting seat, supporting columns are fixed to the upper portion of the supporting seat, and a supporting plate is fixed to the supporting columns; according to the reverse modeling method and device for the building, the up-down position of the supporting column is limited through the sliding block, the supporting column is prevented from sliding up and down, meanwhile, when the supporting column moves downwards, the supporting column drives the supporting plate to move downwards together, and the scanning module is fixed to the inner wall of the scanner shell. The limiting rod can rapidly position and limit the position of the supporting plate, the left-right position of the supporting plate is limited to prevent the supporting plate from rotating, the fixing effect between the scanner shell and the supporting base can be better, meanwhile, rapid positioning and rapid installation can be achieved, the risk that the scanner shell falls off due to the fact that the scanner shell is not fixed well is prevented, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of reverse modeling of buildings, and in particular to a method and device for reverse modeling of buildings. Background Art

[0002] Architectural reverse modeling is a process that uses scanning, measurement, or image processing to obtain geometric and structural information from existing object data. This process then converts point cloud or mesh data into an editable and manipulable 3D model. Reverse modeling techniques include point cloud reverse modeling, photo reverse modeling, and 3D scanning reverse modeling. The resulting models can be used in digital visualization, film and television, gaming, and other scientific research applications.

[0003] In reverse modeling, the collection of point data on a product's surface obtained through measuring instruments is called a point cloud. Typically, a 3D coordinate measuring machine (CMM) produces a relatively small number of points with large spacing between them, resulting in a sparse point cloud. A 3D laser scanner or camera scanner, on the other hand, produces a dense point cloud with a larger number of points. Whether using photo-based reverse modeling, radar scanning, or laser scanning, the initial step is to generate a point cloud. The point cloud's density and spatial position are calculated to create a 3D model. This process is called point cloud to 3D model conversion. Finally, texture mapping is performed on the 3D model to create a complete 3D model.

[0004] Conventional construction scanners use nuts and bolts to fix the scanner and the support base. It is very troublesome to install the docking screw holes. The tilted docking angle will cause the screw holes to slip and wear. If the screw holes are worn, the scanner will be tilted after installation and positioning, affecting the use of the scanner. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a method and device for reverse modeling of a building, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A reverse modeling device for a building, comprising a support base, a support leg hingedly connected to the bottom of the support base, a support column fixed above the support base, a support plate fixed to the support column, a scanner housing fixed above the support column, a scanning module fixed to the inner wall of the scanner housing, a clamping device provided on the support base, a knocking device provided on the scanner housing, and a protective device provided on the scanner housing;

[0007] The clamping device includes a sliding rod, a sliding block, a sliding spring, a limiting rod, an extrusion spring and an extrusion plate. The sliding rod slides in a notch on the support seat, and the sliding block is fixed on the sliding rod.

[0008] According to the above technical solution, the sliding block slides in the slot on the support seat, a sliding spring is fixed on the sliding block, the end point of the sliding spring is fixed on the inner wall of the slot on the support seat, and the sliding spring slides in the slot on the support seat.

[0009] When the two sets of sliding blocks move away from each other, the two sets of sliding blocks will move away from each other, and the two sets of sliding blocks will move closer to each other, and the sliding blocks will limit the upper and lower positions of the supporting column. When the supporting column moves downward, the supporting plate will move downward with it, and the limit rod can be quickly aligned in the direction under the action of the supporting plate and the notch on the supporting plate. When the two sets of sliding blocks move away from each other, the two sets of sliding blocks will move away from each other with the two sets of sliding blocks. The sliding rods move away from each other, carrying the two sets of limit rods away from each other. When the two sets of sliding blocks approach each other, the two sets of sliding rods move the two sets of limit rods closer to each other. The two sets of limit rods bring the two sets of extrusion springs and the two sets of extrusion plates closer to each other, so that the two sets of extrusion plates squeeze the inner wall of the groove on the support plate, limit the orientation of the support plate, and prevent the support plate and the support column from rotating and causing the scanner housing and the scanning module to rotate, so that the scanning instrument is not affected by vibration during operation and the rotation affects data collection. When disassembly and assembly are required, the staff pulls the bottom of the two limit blocks to move the two sets of limit blocks away from each other with the two sets of sliding rods and the sliding blocks, and the staff lifts the support plate to release the limit with the scanner housing and the scanning module.

[0010] According to the above technical solution, the knocking device includes a latch, a tension spring, a connecting block, a clamping plate and a knocking block, and the latch is fixed above the limiting rod.

[0011] According to the above technical solution, the tension spring is fixed in a slot on the scanner housing, a connecting block is fixed to the end point of the tension spring, a card plate is fixed on the connecting block, and a knocking block is fixed on the card plate. When the two sets of limit rods approach each other, the limit rods engage and displace the teeth on the limit rods on the card plate, causing the card plate and the connecting block to move up and down under the action of the tension spring, and the up and down movement of the card plate causes the knocking block to move up and down, causing the knocking block to knock on the scanner housing.

[0012] According to the above technical solution, the protective device includes an extrusion rod, a compression plate, an air box, trachea one, trachea two, an annular airbag, an air release valve port, a one-way air inlet valve and a one-way air outlet valve. The extrusion rod is fixed above the connecting block, and a compression plate is fixed at the end point of the extrusion rod.

[0013] According to the above technical solution, the air box is fixed in the slot on the scanner housing, air pipe 1 is fixed on the air box, air pipe 2 is fixed at the end point of air pipe 1, and a one-way air outlet valve is fixed on air pipe 2.

[0014] According to the above technical solution, a one-way air inlet valve is fixed to one end of the trachea two, and an annular airbag is fixed to the other end of the trachea two. A deflation valve port is fixed on the annular airbag. When the connecting block moves up and down, the connecting block causes the extrusion rod to move up and down, and the extrusion rod moves up and down and causes the compression plate to move up and down. The compression plate moves upward to squeeze the gas in the air box along trachea one, trachea two and the outlet valve into the annular airbag, inflating the annular airbag. When the compression plate moves downward, the compression plate extracts gas from the air inlet valve, trachea two and trachea one into the air box. After the extrusion rod moves up and down multiple times, the annular airbag is inflated. When the scanning instrument is disassembled, the deflation valve port is opened to release the gas in the annular airbag and shrink the annular airbag.

[0015] A method for reverse modeling of a building, including the aforementioned reverse modeling device for a building, comprises the following steps:

[0016] S1. When reverse modeling of a building is required, insert the equipment support column into the support base to fix the scanner housing on the support base;

[0017] S2. Move the installed scanner device to the building location to be scanned via the support legs;

[0018] S3. Start the scanning module, convert the detected light signal into an electrical signal by using the photosensitive device in the scanning module, and then convert the electrical signal into a digital signal through an analog / digital (A / D) converter, and transmit it to the computer;

[0019] S4. When the scanning is completed, the staff pulls the two limit rods away from each other, so that the two sets of limit rods move away from each other with the two sets of sliding rods and sliding blocks, and the staff lifts the support plate to release the connection with the scanner housing.

[0020] The present invention provides a method and device for reverse modeling of buildings. The method and device have the following beneficial effects:

[0021] (1) The present invention is provided with a clamping device. When the scanner housing is to be fixed on the support seat, the support column on the scanner is inserted into the groove on the support seat, and the sliding block limits the upper and lower positions of the support column to prevent the support column from sliding up and down. At the same time, when the support column moves downward, the support column moves downward with the support plate. The limit rod can quickly locate and limit the position of the support plate, limit the left and right positions of the support plate to prevent the support plate from rotating, so that the fixing effect between the scanner housing and the support seat is better, and at the same time, it can be quickly positioned and installed, that is, the risk of the scanner housing not being fixed properly falling is prevented, and work efficiency is increased.

[0022] (2) The present invention is provided with a knocking device. When the clamping device moves, the limit rod moves on the card plate with the engaging teeth, so that the card plate moves up and down with the knocking block under the action of the extrusion spring. The knocking block knocks the scanner housing, causing the dust and debris stuck on the scanning module lens to fall off, reducing the impact of dust on three-dimensional data acquisition, reducing errors, reducing the number of scans, and delaying the aging speed of the scanning module.

[0023] (3) The present invention is provided with a protective device. When the connecting block moves up and down, the extrusion rod moves up and down, causing the air box to inflate the annular airbag. When the staff accidentally knocks over the scanner, the annular airbag provides shock absorption and protection for the scanner shell, preventing damage to the scanner shell and the scanning module, increasing the safety of the instrument, reducing damage caused by the instrument falling, and thus reducing economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0026] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the local structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the local cross-sectional structure of the present invention.

[0029] In the figure: 1. Support seat; 2. Support leg; 3. Support column; 4. Support plate; 5. Scanner housing; 6. Scanning module; 7. Clamping device; 8. Knocking device; 9. Protective device; 701. Sliding rod; 702. Sliding block; 703. Sliding spring; 704. Limiting rod; 705. Extrusion spring; 706. Extrusion plate; 801. Clamping tooth; 802. Tension spring; 803. Connecting block; 804. Clamping plate; 805. Knocking block; 901. Extrusion rod; 902. Compression plate; 903. Air box; 904. Trachea 1; 905. Trachea 2; 906. Annular airbag; 907. Air release valve port; 908. One-way air inlet valve; 909. One-way air outlet valve. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 5 One embodiment of the present invention is: a reverse modeling method and device for a building, comprising a support base 1, a support leg 2 hingedly connected to the bottom of the support base 1, a support column 3 fixed to the top of the support base 1, a support plate 4 fixed to the support column 3, a scanner housing 5 fixed to the top of the support column 3, a scanning module 6 fixed to the inner wall of the scanner housing 5, a clamping device 7 provided on the support base 1, a knocking device 8 provided on the scanner housing 5, and a protective device 9 provided on the scanner housing 5; wherein the clamping device 7 includes a slide bar 701, a slide block 702, a slide spring 703, and a limit rod 704. 04. Extrusion spring 705 and extrusion plate 706. The sliding rod 701 slides in the slot on the support base 1. The sliding block 702 is fixed on the sliding rod 701. The sliding block 702 slides in the slot on the support base 1. The sliding spring 703 is fixed on the sliding block 702. The end point of the sliding spring 703 is fixed to the inner wall of the slot on the support base 1. The sliding spring 703 slides in the slot on the support base 1. A limiting rod 704 is fixed above the sliding rod 701. The extrusion spring 705 is fixed on the limiting rod 704. The end point of the extrusion spring 705 is fixed to the extrusion plate 706.

[0032] A reverse modeling method for a building comprises the following steps:

[0033] S1. When reverse modeling of a building is required, insert the equipment support column 3 into the support base 1 to fix the scanner housing 5 on the support base 1;

[0034] S2, moving the installed scanner device to the building location to be scanned via support leg 2;

[0035] S3, start the scanning module 6, use the light sensor in the scanning module 6 to convert the detected light signal into an electrical signal, then convert the electrical signal into a digital signal through an analog / digital (A / D) converter, and transmit it to the computer;

[0036] S4. When the scan is completed, the staff pulls the two limit rods 704 away from each other, so that the two groups of limit rods 704 move the two groups of slide rods 701 and slide blocks 702 away from each other, and the staff lifts the support plate 4 to release the connection with the scanner housing 5.

[0037] When the scanner housing 5 is to be fixed on the support base 1, the support column 3 on the scanner is inserted into the slot on the support base 1, and the sliding block 702 limits the up and down position of the support column 3 to prevent the support column 3 from sliding up and down. At the same time, when the support column 3 moves downward, the support column 3 moves downward with the support plate 4. The limit rod 704 can quickly locate and limit the position of the support plate 4, limit the left and right position of the support plate 4 to prevent the support plate 4 from rotating, so that the fixing effect between the scanner housing 5 and the support base 1 can be better, and at the same time, it can be quickly positioned and installed, that is, it prevents the risk of the scanner housing 5 falling if it is not fixed properly, and increases work efficiency.

[0038] When the support column 3 is inserted into the support seat 1, the support column 3 squeezes the two sets of sliding blocks 702, so that the two sets of sliding blocks 702 move away from each other. When the support column 3 continues to move downward, the sliding blocks 702 are squeezed and slide into the annular groove on the support column 3 under the action of the sliding spring 703, and the two sets of sliding blocks 702 move closer to each other. The sliding blocks 702 limit the upper and lower positions of the support column 3. When the support column 3 moves downward, the support plate 4 moves downward with the limiting rod 704, which can quickly align the direction under the action of the supporting plate 4 and the notch on the supporting plate 4. When the two sets of sliding blocks 702 move away from each other, the two sets of sliding blocks 702 move away from each other with the two sets of sliding rods 701. When the two sets of sliding blocks 7 02 approach each other, the two sets of sliding rods 701 bring the two sets of limiting rods 704 approach each other, and the two sets of limiting rods 704 bring the two sets of extrusion springs 705 and the two sets of extrusion plates 706 approach each other, so that the two sets of extrusion plates 706 squeeze the inner wall of the slot on the support plate 4, limit the orientation of the support plate 4, and prevent the support plate 4 and the support column 3 from rotating and causing the scanner housing 5 and the scanning module 6 to rotate, so that the scanning instrument will not be affected by vibration during operation and cause the scanner housing 5 to rotate and affect data collection. When disassembly and assembly are required, the staff pulls the bottom of the two limiting rods 704 to make the two sets of limiting rods 704 bring the two sets of sliding rods 701 and the sliding block 702 away from each other, and the staff lifts the support plate 4 and the scanner housing 5 and the scanning module 6 to release the limit.

[0039] See also Figure 1-Figure 5On the basis of the above embodiment, in another embodiment of the present invention, the knocking device 8 includes a latch 801, a tension spring 802, a connecting block 803, a card plate 804 and a knocking block 805, the latch 801 is fixed above the limit rod 704, the tension spring 802 is fixed in the slot on the scanner housing 5, the end point of the tension spring 802 is fixed with a connecting block 803, the connecting block 803 is fixed with a card plate 804, and the card plate 804 is fixed with a knocking block 805. When the clamping device 7 moves, the limit rod 704 engages with the latch 801 and moves on the card plate 804, so that the card plate 804 moves up and down with the knocking block 805 under the action of the tension spring 802, and the knocking block 805 knocks the scanner housing 5, so that dust and debris stuck on the lens of the scanning module 6 fall off, reducing the influence of dust on three-dimensional data acquisition, reducing errors, reducing the number of scans, and delaying the aging speed of the scanning module 6.

[0040] The protective device 9 includes an extrusion rod 901, a compression plate 902, an air box 903, an air pipe 1 904, an air pipe 2 905, an annular air bag 906, an air release valve 907, a one-way air inlet valve 908 and a one-way air outlet valve 909. The extrusion rod 901 is fixed above the connecting block 803, and the end point of the extrusion rod 901 is fixed with the compression plate 902. The air box 903 is fixed in the slot on the scanner housing 5. The air box 903 is fixed with the air pipe 1 904, and the end point of the air pipe 1 904 is fixed with the air pipe 2 905. The one-way air outlet valve 909 is fixed on the air pipe 2 905. A one-way air inlet valve 908 is fixed to one end of the second tube 905, and an annular air bag 906 is fixed to the other end of the second air pipe 905. A deflation valve port 907 is fixed on the annular air bag 906. When the connecting block 803 moves up and down, the extrusion rod 901 moves up and down, causing the air box 903 to inflate the annular air bag 906. When the staff accidentally knocks over the scanner, the annular air bag 906 provides shock-absorbing protection for the scanner housing 5, preventing damage to the scanner housing 5 and the scanning module 6, increasing the safety of the instrument, and reducing damage caused by the instrument falling, thereby reducing economic losses.

[0041] When this embodiment is working: when the two groups of limit rods 704 approach each other, the limit rods 704 engage and displace the teeth 801 on the limit rods 704 on the card plate 804, so that the card plate 804 and the connecting block 803 move up and down under the action of the tension spring 802, and the up and down movement of the card plate 804 causes the knocking block 805 to move up and down, causing the knocking block 805 to knock on the scanner housing 5.

[0042] When the connecting block 803 moves up and down, the connecting block 803 moves up and down with the extrusion rod 901, and the extrusion rod 901 moves up and down with the compression plate 902. The compression plate 902 moves upward to squeeze the gas in the air box 903 along the trachea 1 904, the trachea 2 905 and the outlet valve into the annular airbag 906, so that the annular airbag 906 is inflated. When the compression plate 902 moves downward, the compression plate 902 draws gas from the one-way air inlet valve 908, the trachea 2 905 and the trachea 1 904 to flow into the air box 903. After the extrusion rod 901 moves up and down several times, the annular airbag 906 is inflated. When the scanning instrument is disassembled, the air release valve 907 is opened to release the gas in the annular airbag 906, and the annular airbag 906 shrinks.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A reverse modeling device for a building, comprising a support base (1), characterized in that: A support leg (2) is hingedly connected to the lower portion of the support base (1), a support column (3) is fixed above the support base (1), a support plate (4) is fixed on the support column (3), a scanner housing (5) is fixed above the support column (3), a scanning module (6) is fixed on the inner wall of the scanner housing (5), a clamping device (7) is provided on the support base (1), a knocking device (8) is provided on the scanner housing (5), and a protective device (9) is provided on the scanner housing (5); The clamping device (7) comprises a sliding rod (701), a sliding block (702), a sliding spring (703), a limiting rod (704), an extrusion spring (705) and an extrusion plate (706); the sliding rod (701) slides in a notch on the support seat (1); and the sliding block (702) is fixed on the sliding rod (701).

2. The reverse modeling device for a building according to claim 1, characterized in that: The sliding block (702) slides in the slot on the support seat (1), a sliding spring (703) is fixed on the sliding block (702), an end point of the sliding spring (703) is fixed on the inner wall of the slot on the support seat (1), and the sliding spring (703) slides in the slot on the support seat (1).

3. The reverse modeling device for a building according to claim 2, characterized in that: A limiting rod (704) is fixed above the sliding rod (701), an extrusion spring (705) is fixed on the limiting rod (704), and an extrusion plate (706) is fixed to the end point of the extrusion spring (705).

4. The reverse modeling device for a building according to claim 3, characterized in that: The knocking device (8) comprises a latch (801), a tension spring (802), a connecting block (803), a clamping plate (804) and a knocking block (805), wherein the latch (801) is fixed above the limiting rod (704).

5. The reverse modeling device for a building according to claim 4, characterized in that: The tension spring (802) is fixed in a notch on the scanner housing (5); a connecting block (803) is fixed to an end point of the tension spring (802); a clamping plate (804) is fixed to the connecting block (803); and a knocking block (805) is fixed to the clamping plate (804).

6. The reverse modeling device for a building according to claim 5, characterized in that: The protective device (9) comprises an extrusion rod (901), a compression plate (902), an air box (903), a first air pipe (904), a second air pipe (905), an annular air bag (906), an air release valve (907), a one-way air inlet valve (908) and a one-way air outlet valve (909). The extrusion rod (901) is fixed above the connecting block (803), and the compression plate (902) is fixed to the end point of the extrusion rod (901).

7. The reverse modeling device for a building according to claim 6, characterized in that: The air box (903) is fixed in a notch on the scanner housing (5), and air pipe 1 (904) is fixed on the air box (903). Air pipe 2 (905) is fixed at the end point of air pipe 1 (904), and a one-way air outlet valve (909) is fixed on air pipe 2 (905).

8. The reverse modeling device for a building according to claim 7, characterized in that: A one-way air inlet valve (908) is fixed to one end of the second air pipe (905), and an annular air bag (906) is fixed to the other end of the second air pipe (905), and an air release valve port (907) is fixed to the annular air bag (906).

9. A method for reverse modeling of a building, based on the reverse modeling device for a building according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. When reverse modeling of a building is required, the equipment support column (3) is inserted into the support base (1), so that the scanner housing (5) is fixed on the support base (1); S2, moving the installed scanner device to the building location to be scanned via the support legs (2); S3, starting the scanning module (6), converting the detected light signal into an electrical signal by using the photosensitive device in the scanning module (6), and then converting the electrical signal into a digital signal through an analog / digital (A / D) converter, and transmitting the digital signal to the computer; S4. When the scanning is completed, the staff pulls the two limit rods (704) away from each other, so that the two sets of limit rods (704) move away from each other with the two sets of sliding rods (701) and sliding blocks (702). The staff lifts the support plate (4) and releases the connection with the scanner housing (5).

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