CN115900647B - Building detection structure based on BIM technology and detection method thereof - Google Patents
Building detection structure based on BIM technology and detection method thereof Download PDFInfo
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- CN115900647B CN115900647B CN202310242951.9A CN202310242951A CN115900647B CN 115900647 B CN115900647 B CN 115900647B CN 202310242951 A CN202310242951 A CN 202310242951A CN 115900647 B CN115900647 B CN 115900647B
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Abstract
The invention relates to the field of buildings, in particular to a building detection structure based on BIM technology and a detection method thereof, wherein the building detection structure comprises a box body, an outer ring return-shaped plate, an inner ring return-shaped plate, a support rod a, a support rod b, a support frame, a range finder a and a range finder b; four groups of lifting cylinders a and four groups of lifting cylinders b are arranged at the bottom of the box body in a sliding manner; the support rod a is rotatably arranged on the inner wall of the bottom of the lifting cylinder a, the support rod b is rotatably arranged on the inner wall of the bottom of the lifting cylinder b, and the support rod a and the support rod b are respectively provided with a roller a and a roller b; the supporting frame is arranged on the inner wall of the box body and above the power assembly, and a fixed return plate is arranged at the center of the top of the supporting frame; four groups of distance meters a are arranged on the outer walls around the fixed return-type plates, and distance meters b are vertically arranged on the supporting frame. According to the invention, the box body can automatically move to a required detection point, then the net height measurement is automatically carried out, the use is simple and convenient, the indoor net height measurement efficiency of the building is high, the detection is strict, and the reliability of the detection result is high.
Description
Technical Field
The invention relates to the field of buildings, in particular to a building detection structure based on BIM technology and a detection method thereof.
Background
The core of BIM is to build a virtual three-dimensional building engineering model and provide a complete building engineering information base consistent with the actual situation for the model by utilizing a digitizing technology. By means of the three-dimensional model containing the construction engineering information, the information integration degree of the construction engineering is greatly improved, and therefore a platform for engineering information exchange and sharing is provided for relevant stakeholders of the construction engineering project. Among them, the detection of the net height of a building is an important task in engineering detection, which is critical to the quality of subsequent buildings.
As shown in fig. 7, the existing detection method is to perform point detection, specifically, a point near four points of a wall corner and at the center, the four points of the wall corner have clear distance requirements, the distance between the point and the wall surface is marked as L, the standard value of L is 300mm or 500mm, some differences may exist in each specification, but detection is still required according to each standard, in the actual detection process, four points are marked according to the L value, then diagonal lines are drawn to determine center points, and then clear height measurement is performed, the operation process is complicated, the detection efficiency is low, sometimes, in order to save time, a detection personnel directly adopts a visual detection mode to determine the positions of the points, so that the clear height detection standard specification is identical to the dummy, and certain randomness exists on the clear height detection point, and the accuracy and compliance of the detection result cannot be ensured.
The Chinese patent with the authorized bulletin number of CN209372034U discloses a building monitoring device based on BIM technology, which comprises a vehicle body, wheels rotationally connected with the vehicle body and a driving piece for driving the wheels to rotate, wherein a range finder is arranged on the vehicle body, and a tablet personal computer and a GPS (global positioning system) positioner connected with the tablet personal computer are also arranged in the vehicle body; a plurality of supporting elastic pieces are fixed in the wheel, and the wheel is made of elastic materials. The monitoring device with the structure can solve the problem that the distance meter is inaccurate in measurement caused by the pits of the road in the prior art.
However, the above disclosed solution has the following disadvantages: the net height detection point can not be determined quickly, and still needs to be fixed according to the standard manually, so that the detection efficiency is low.
Disclosure of Invention
The invention aims to solve the problems that in the background technology, the detection point is required to be determined by manual measurement in building clear height detection, and the detection efficiency is low, and provides a building detection structure based on BIM technology and a detection method thereof.
On one hand, the invention provides a building detection structure based on BIM technology, which comprises a box body, an outer ring return-shaped plate, an inner ring return-shaped plate, a supporting rod a, a supporting rod b, a supporting frame, a range finder a and a range finder b;
the bottom of the box body is provided with four groups of lifting cylinders a and four groups of lifting cylinders b in a sliding manner along the vertical direction, the top of the lifting cylinder a is connected with the outer ring return-type plate, the top of the lifting cylinder b is connected with the inner ring return-type plate, and the bottom of the box body is provided with two groups of lifting devices for driving the outer ring return-type plate and the inner ring return-type plate to lift; the support rods a and b are respectively provided with four groups, the support rods a are rotatably arranged on the inner wall of the bottom of the lifting cylinder a, the support rods b are rotatably arranged on the inner wall of the bottom of the lifting cylinder b, the support rods a are vertical to the support rods b, and the support rods a and the support rods b are respectively provided with rollers a and b; the outer ring return-shaped plate and the inner ring return-shaped plate are respectively provided with a power component for driving the support rod a and the support rod b to rotate; the supporting frame is arranged on the inner wall of the box body and above the power assembly, and a fixed return plate is arranged at the center of the top of the supporting frame; four groups of distance meters a are arranged on the outer walls around the fixed return-shaped plate, and distance meters b are vertically arranged on the support frame and positioned in the fixed return-shaped plate;
four groups of touch display screens a and one group of touch display screens b are arranged on the outer wall of the top of the box body, a corner detection starting button and a center detection starting button are arranged on the outer wall of the top of the box body, and a power supply and a control system are arranged in the box body.
Preferably, the control system is in control connection with the distance meter a and the distance meter b, the control system is in uniform data transmission connection with the touch display screen a and the touch display screen b, and the control system is in signal transmission connection with the corner detection starting button and the center detection starting button.
Preferably, the lifting device is an electric push rod.
Preferably, a plurality of groups of guide rods are vertically arranged on the inner wall of the bottom of the box body, and a plurality of groups of guide holes for the guide rods to pass through are formed in the outer ring return-shaped plate and the inner ring return-shaped plate.
Preferably, the power assembly comprises a chain wheel a, a chain, a supporting plate, a chain wheel b and a double-shaft motor; the chain wheels a are provided with four groups, two groups of chain wheels a are respectively arranged on two groups of support rods a, and the other two groups of chain wheels a are respectively arranged on two groups of support rods b; the support plates are respectively provided with two groups of outer ring return plates and inner ring return plates, and support rods are rotatably arranged between the two groups of support plates; the two groups of double-shaft motors are respectively arranged on the outer ring return-shaped plate and the inner ring return-shaped plate, and respectively drive the two groups of support rods to rotate; the chain wheel b is arranged at two ends of each group of supporting rods, the chain wheel b is connected with the chain wheel a through chain transmission, and avoidance grooves for the chain to pass through are formed in the outer ring return-shaped plate and the inner ring return-shaped plate.
Preferably, two groups of access holes are formed in the outer wall of the box body, and the two groups of access holes face the two groups of double-shaft motors respectively.
Preferably, a handle is arranged on the outer wall of the box body.
On the other hand, the invention provides a building detection structure detection method based on BIM technology, which comprises the following steps:
s1, when the clear height near the corner is detected, placing the box body at a rough position;
s2, inputting corresponding distance L values on the two groups of touch display screens a according to detection standards, wherein the two groups of distance meters a without the input values do not work by default, and the two groups of distance meters a working at the moment face two walls of the corner vertically respectively;
s3, pressing a corner detection start button, and controlling the work of a power assembly by a control system according to the measured distance values of the two groups of distance meters a, wherein the power assembly works to drive the roller a and the roller b to rotate, so that the box body is automatically moved to a required position;
s4, starting the range finder b to obtain a measured value, and displaying the value obtained by adding the measured value to the height of the measured point from the ground on the touch display screen b by the control system, wherein the value is the net height value near the corner, repeating the operation, and sequentially completing the net height measurement of four points of the corner;
s5, when the indoor center clear height is detected, the box body is placed at the approximate position in the middle of the building indoor;
s6, pressing a central detection start button, wherein the four groups of distance meters a work, and the control system controls the power assembly to work according to the measured values of the four groups of distance meters a to drive the box body to move until the values of the two groups of distance meters a in the same direction are equal, and then the box body is moved to the indoor central position;
s7, starting the range finder b to obtain a measured value, and displaying the value obtained by adding the measured value to the height of the measured point from the ground on the touch display screen b by the control system, wherein the value is the net height value at the indoor center.
Compared with the prior art, the invention has the following beneficial technical effects: after the box body is placed at the approximate position, the box body can automatically move to a required detection point by pressing a corner detection start button or a center detection start button, then the clear height measurement is automatically carried out, five detection points are determined without manually measuring and drawing lines, the use is simple and convenient, the indoor clear height measurement efficiency of a building is high, the detection is strictly carried out according to the detection standard, the detection is strict, and the reliability of the detection result is high.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIGS. 2 and 3 are side cross-sectional views of FIG. 1;
FIGS. 4 and 5 are top cross-sectional views of FIG. 1;
FIG. 6 is a bottom view of FIG. 1;
fig. 7 is a diagram of net height detection dotting.
Reference numerals: 1. a case body; 2. a lifting cylinder a; 3. a lifting cylinder b; 4. an outer ring return plate; 5. an inner ring return plate; 6. a guide rod; 7. a supporting rod a; 8. a support rod b; 9. a roller a; 10. a roller b; 11. a sprocket a; 12. a chain; 13. a support plate; 14. a sprocket b; 15. a support rod; 16. a biaxial motor; 17. a support frame; 18. fixing the return-shaped plate; 19. a distance meter a; 20. a distance meter b; 21. a handle; 22. a touch display screen a; 23. a touch display screen b; 24. a corner detection start button; 25. a center detection start button; 26. a lifting device; 27. and an access opening.
Detailed Description
Example 1
The invention provides a building detection structure based on BIM technology, which comprises a box body 1, an outer ring return-shaped plate 4, an inner ring return-shaped plate 5, a support rod a7, a support rod b8, a support frame 17, a range finder a19 and a range finder b20;
as shown in fig. 4, a handle 21 is provided on the outer wall of the case 1.
As shown in fig. 1, four sets of lifting cylinders a2 and four sets of lifting cylinders b3 are slidably arranged at the bottom of the box body 1 along the vertical direction, and the four sets of lifting cylinders a2 and the four sets of lifting cylinders b3 are all rectangular in distribution.
As shown in fig. 5, the top of the lifting cylinder a2 is connected with the outer ring return-shaped plate 4, the top of the lifting cylinder b3 is connected with the inner ring return-shaped plate 5, a plurality of groups of guide rods 6 are vertically arranged on the inner wall of the bottom of the box body 1, and a plurality of groups of guide holes for the guide rods 6 to pass through are respectively arranged on the outer ring return-shaped plate 4 and the inner ring return-shaped plate 5.
As shown in fig. 3, two sets of lifting devices 26 driving the outer ring return-shaped plate 4 and the inner ring return-shaped plate 5 to lift are arranged at the bottom of the box body 1, and the lifting devices 26 are electric push rods.
As shown in fig. 6, four groups of support rods a7 and b8 are respectively arranged, the support rod a7 is rotatably arranged on the inner wall of the bottom of the lifting cylinder a2, the support rod b8 is rotatably arranged on the inner wall of the bottom of the lifting cylinder b3, the support rod a7 is vertical to the support rod b8, and the support rod a7 and the support rod b8 are respectively provided with a roller a9 and a roller b10; the outer ring return-type plate 4 and the inner ring return-type plate 5 are respectively provided with a power component for driving the support rod a7 and the support rod b8 to rotate.
As shown in fig. 4, a supporting frame 17 is arranged on the inner wall of the box body 1 and above the power component, and a fixed return plate 18 is arranged at the center of the top of the supporting frame 17; four groups of distance meters a19 are arranged on the outer walls around the fixed return-type plate 18, and distance meters b20 are vertically arranged on the supporting frame 17 and positioned in the fixed return-type plate 18.
As shown in fig. 1, four groups of touch display screens a22 and one group of touch display screens b23 are arranged on the outer wall of the top of the box body 1, a corner detection start button 24 and a center detection start button 25 are arranged on the outer wall of the top of the box body 1, and a power supply and a control system are arranged in the box body 1. The control system is in control connection with the distance meter a19 and the distance meter b20, is in uniform data transmission connection with the touch display screen a22 and the touch display screen b23, and is in signal transmission connection with the corner detection start button 24 and the center detection start button 25.
Working principle: when detecting the clear height near the corner, the box body 1 is placed at a rough position, corresponding distance values are input on two groups of touch display screens a22 according to detection standards, the input values are equal to the measured value of the distance measuring instrument a19 plus the distance between the distance measuring point and the center point of the fixed return plate 18, the two groups of distance measuring instruments a19 without input values do not work by default, then the corner detection start button 24 is pressed, the control system controls the operation of the power assembly according to the measured distance values of the two groups of distance measuring instruments a19, the power assembly operates to drive the roller a9 and the roller b10 to rotate, the box body 1 is automatically moved to a required position, the moving mode of the box body 1 is that the distance of one direction is adjusted and then the distance measuring instrument b20 is started, a measured value is obtained, the control system displays the measured value obtained by adding the measured value to the height of the measured point from the ground on the touch display screen b23, the value is the clear height value near the corner, the operation is repeated, and the wall height measurement of four points is completed sequentially. When the indoor center clear height is detected, the box body 1 is placed at the approximate middle position in a building room, then the center detection starting button 25 is pressed, the four sets of distance meters a19 work, the control system controls the power assembly to work to drive the box body 1 to move according to the measured values of the four sets of distance meters a19 until the values of the two sets of distance meters a19 in the same direction are equal, at the moment, the box body 1 is moved to the indoor center position, if one side in the building room is open, a baffle plate can be taken to be placed at the opening to serve as a wall body temporarily, the box body 1 can be accurately moved to the indoor center position, then the distance meter b20 is started to obtain a measured value, the measured value added to the height of the measured point from the ground is displayed on the touch display screen b23 by the control system, and the measured value is the clear height value at the indoor center.
In this embodiment, after the box body 1 is placed at the approximate position, by pressing the corner detection start button 24 or the center detection start button 25, the box body 1 can automatically move to a required detection point, then the clear height measurement is automatically performed, the five detection points are not required to be determined by manually measuring and drawing lines, the use is simple and convenient, the indoor clear height measurement efficiency of the building is high, the detection is strictly performed according to the detection standard, the detection is strict, and the reliability of the detection result is high.
Example two
As shown in fig. 2, 3 and 5, in comparison with the first embodiment, the power assembly of the building detection structure based on the BIM technology according to the present invention includes a sprocket a11, a chain 12, a support plate 13, a sprocket b14 and a dual-shaft motor 16; four groups of chain wheels a11 are arranged, two groups of chain wheels a11 are respectively arranged on two groups of supporting rods a7, and the other two groups of chain wheels a11 are respectively arranged on two groups of supporting rods b 8; the two groups of support plates 13 are respectively arranged on the outer ring return-shaped plate 4 and the inner ring return-shaped plate 5, and a support rod 15 is rotatably arranged between the two groups of support plates 13; the two groups of double-shaft motors 16 are arranged, the two groups of double-shaft motors 16 are respectively arranged on the outer ring return-shaped plate 4 and the inner ring return-shaped plate 5, and the two groups of double-shaft motors 16 respectively drive the two groups of support rods 15 to rotate; the chain wheel b14 is arranged at two ends of each group of supporting rods 15, the chain wheel b14 is in transmission connection with the chain wheel a11 through the chain 12, and avoidance grooves for the chain 12 to pass through are formed in the outer ring return-shaped plate 4 and the inner ring return-shaped plate 5. Two groups of access holes 27 are formed in the outer wall of the box body 1, and the two groups of access holes 27 face the two groups of double-shaft motors 16 respectively.
In this embodiment, the dual-shaft motor 16 drives the supporting rod 15 to rotate, the supporting rod 15 drives the supporting rod a7 and the supporting rod b8 to rotate through the sprocket b14, the chain 12 and the sprocket a11, and the roller a9 or the roller b10 can drive the box body 1 to move, so as to adjust the position of the box body 1. It should be noted that, when the biaxial motor 16 on the outer ring return-shaped plate 4 works, the inner ring return-shaped plate 5 is at the highest point under the drive of the lifting device 26, namely, the roller b10 is not in contact with the ground, and when the biaxial motor 16 on the inner ring return-shaped plate 5 works, the outer ring return-shaped plate 4 is at the highest point under the drive of the lifting device 26, namely, the roller a9 is not in contact with the ground, so that the consistency of the single moving direction of the box body 1 is ensured.
Example III
Based on the above-mentioned building detection structure embodiment detection method based on BIM technology, including the following steps:
s1, when the clear height near the corner is detected, placing the box body 1 at a rough position;
s2, inputting corresponding distance L values on the two groups of touch display screens a22 according to detection standards, wherein the two groups of distance meters a19 without the input values are not operated by default, and the two groups of distance meters a19 operated at the moment are respectively and vertically oriented to two walls of the corner;
s3, pressing a corner detection start button 24, and controlling the power assembly to work according to the measured distance values of the two groups of distance meters a19 by the control system, wherein the power assembly works to drive the roller a9 and the roller b10 to rotate, so that the box body 1 is automatically moved to a required position;
s4, starting the range finder b20 to obtain a measured value, and displaying the measured value added with the height of the measured point from the ground on the touch display screen b23 by the control system, wherein the measured value is the net height value near the corner, repeating the operation, and sequentially completing the net height measurement of four points of the corner;
s5, when the indoor center clear height is detected, the box body 1 is placed at the approximate position in the middle of a building room;
s6, pressing a center detection start button 25, wherein four groups of distance meters a19 work, and the control system controls the power assembly to work to drive the box body 1 to move according to the measured values of the four groups of distance meters a19 until the values of the two groups of distance meters a19 in the same direction are equal, and then the box body 1 is moved to the indoor center position;
s7, starting the range finder b20 to obtain a measured value, and displaying the value obtained by adding the measured value to the height of the measured point from the ground on the touch display screen b23 by the control system, wherein the value is the net height value at the indoor center.
In this embodiment, after the box body 1 is placed at the approximate position, by pressing the corner detection start button 24 or the center detection start button 25, the box body 1 can automatically move to a required detection point, then the clear height measurement is automatically performed, the five detection points are not required to be determined by manually measuring and drawing lines, the use is simple and convenient, the indoor clear height measurement efficiency of the building is high, the detection is strictly performed according to the detection standard, the detection is strict, and the reliability of the detection result is high.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (7)
1. The building detection structure based on the BIM technology is characterized by comprising a box body (1), an outer ring return-shaped plate (4), an inner ring return-shaped plate (5), a support rod a (7), a support rod b (8), a support frame (17), a range finder a (19) and a range finder b (20);
four groups of lifting cylinders a (2) and four groups of lifting cylinders b (3) are slidably arranged at the bottom of the box body (1) along the vertical direction, the top of the lifting cylinder a (2) is connected with the outer ring return plate (4), the top of the lifting cylinder b (3) is connected with the inner ring return plate (5), and two groups of lifting devices (26) for driving the outer ring return plate (4) and the inner ring return plate (5) to lift are arranged at the bottom of the box body (1); the support rods a (7) and b (8) are respectively provided with four groups, the support rods a (7) are rotatably arranged on the inner wall of the bottom of the lifting cylinder a (2), the support rods b (8) are rotatably arranged on the inner wall of the bottom of the lifting cylinder b (3), the support rods a (7) are perpendicular to the support rods b (8), and the support rods a (7) and b (8) are respectively provided with a roller a (9) and a roller b (10); the outer ring return-shaped plate (4) and the inner ring return-shaped plate (5) are respectively provided with a power component for driving the support rod a (7) and the support rod b (8) to rotate; the supporting frame (17) is arranged on the inner wall of the box body (1) and is positioned above the power assembly, and a fixed return plate (18) is arranged at the center of the top of the supporting frame (17); four groups of distance meters a (19) are arranged on the outer walls around the fixed return-shaped plate (18), and distance meters b (20) are vertically arranged on the supporting frame (17) and positioned in the fixed return-shaped plate (18);
four groups of touch display screens a (22) and a group of touch display screens b (23) are arranged on the outer wall of the top of the box body (1), a corner detection starting button (24) and a center detection starting button (25) are arranged on the outer wall of the top of the box body (1), a power supply and a control system are arranged in the box body (1), the control system is in control connection with the distance meter a (19) and the distance meter b (20), the control system is in uniform data transmission connection with the touch display screens a (22) and the touch display screens b (23), and the control system is in signal transmission connection with the corner detection starting button (24) and the center detection starting button (25).
2. Building inspection structure based on BIM technology according to claim 1, wherein the lifting device (26) is an electric push rod.
3. The building detection structure based on BIM technology according to claim 1, wherein a plurality of groups of guide rods (6) are vertically arranged on the inner wall of the bottom of the box body (1), and a plurality of groups of guide holes for the guide rods (6) to pass through are formed in the outer ring return-type plate (4) and the inner ring return-type plate (5).
4. Building inspection structure based on BIM technology according to claim 1, wherein the power assembly includes sprocket a (11), chain (12), support plate (13), sprocket b (14) and double shaft motor (16); four groups of chain wheels a (11) are arranged, two groups of chain wheels a (11) are respectively arranged on two groups of support rods a (7), and the other two groups of chain wheels a (11) are respectively arranged on two groups of support rods b (8); the two groups of support plates (13) are respectively arranged on the outer ring return-shaped plate (4) and the inner ring return-shaped plate (5), and a support rod (15) is rotatably arranged between the two groups of support plates (13); the two groups of double-shaft motors (16) are arranged, the two groups of double-shaft motors (16) are respectively arranged on the outer ring return-shaped plate (4) and the inner ring return-shaped plate (5), and the two groups of double-shaft motors (16) respectively drive the two groups of support rods (15) to rotate; the chain wheel b (14) is arranged at two ends of each group of supporting rods (15), the chain wheel b (14) is in transmission connection with the chain wheel a (11) through the chain (12), and avoidance grooves for the chain (12) to pass through are formed in the outer ring return-shaped plate (4) and the inner ring return-shaped plate (5).
5. The building inspection structure based on the BIM technology according to claim 4, wherein two groups of access ports (27) are formed on the outer wall of the box body (1), and the two groups of access ports (27) face to the two groups of double-shaft motors (16) respectively.
6. Building inspection structure based on BIM technology according to claim 1, wherein the handle (21) is provided on the outer wall of the box (1).
7. The method for detecting a building detection structure based on the BIM technology according to claim 1, including the steps of:
s1, when the clear height near the corner is detected, placing the box body (1) at a rough position;
s2, inputting the corresponding distance L values on the two groups of touch display screens a (22) according to the detection standard, wherein the two groups of distance meters a (19) without the input values are not operated by default, and the two groups of distance meters a (19) operated at the moment are respectively and vertically oriented to two walls of the corner;
s3, pressing a corner detection start button (24), controlling the power assembly to work according to the measured distance values of the two groups of distance meters a (19), driving the roller a (9) and the roller b (10) to rotate by the power assembly, and automatically moving the box body (1) to a required position;
s4, starting a range finder b (20) to obtain a measured value, displaying a numerical value obtained by adding the measured value to the height of a measuring point from the ground on a touch display screen b (23), wherein the numerical value is a net height value near a corner, repeating the operation, and sequentially completing the net height measurement of four points of the corner;
s5, when the indoor center clear height is detected, the box body (1) is placed at the approximate position in the middle of a building room;
s6, pressing a center detection start button (25), wherein the four groups of distance meters a (19) work, and the control system controls the power assembly to work according to the measured values of the four groups of distance meters a (19) to drive the box body (1) to move until the values of the two groups of distance meters a (19) in the same direction are equal, and then the box body (1) is moved to the indoor center position;
s7, starting the range finder b (20) to obtain a measured value, and displaying the value obtained by adding the measured value to the height of the measured point from the ground on the touch display screen b (23), wherein the value is the net height value at the indoor center.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3259162B2 (en) * | 1995-12-28 | 2002-02-25 | 株式会社間組 | Underground excavator position measuring device |
| CN205991793U (en) * | 2016-08-31 | 2017-03-01 | 山东德建集团有限公司 | Household acceptance stud identification instrument |
| CN207280435U (en) * | 2017-08-07 | 2018-04-27 | 天津理工大学 | It is a kind of that clear height detection device is illuminated based on BIM |
| KR102038404B1 (en) * | 2019-03-06 | 2019-10-30 | 김은희 | Laser leveling equipment for ceiling |
| CN210165947U (en) * | 2019-06-13 | 2020-03-20 | 中交二公局第三工程有限公司 | Clear height detection device based on BIM |
| CN111351434B (en) * | 2020-04-22 | 2021-12-28 | 吉林建筑大学 | Building monitoring devices based on BIM technique |
| CN216770407U (en) * | 2022-01-27 | 2022-06-17 | 中建七局(上海)有限公司 | Adjustable rapid fixed-point tool for house measurement |
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