Building hidden framing glass curtain wall pressing block damage detection system

Abstract

The utility model provides a building hidden framing glass curtain wall pressing block damage detection system, and relates to the field of glass curtain walls. The system comprises an upper computer, a binocular camera, a frame, a calibration plate, a first pressing block and a second pressing block, the frame is integrally arranged and comprises n cross beams arranged in parallel and n longitudinal beams arranged in parallel, the cross beams and the longitudinal beams are vertically arranged, two adjacent cross beams and the corresponding crossed longitudinal beams form a square structure, and a glass curtain wall is mounted in each square structure; the calibration plate is installed on a glass curtain wall to be measured. The frame is installed perpendicular to the ground, the binocular camera shoots glass curtain walls to be measured, and every two adjacent glass curtain walls are connected through a second pressing block; if no glass curtain wall is arranged in the direction of one side edge of the glass curtain wall, the glass curtain wall is connected with the frame through a first pressing block; the side edge of the glass curtain wall which is not provided with the glass curtain wall is mounted on the frame through a first pressing block; the upper computer is connected with the binocular camera, and whether the pressing block fails or not can be recognized through the binocular camera.

Description

Technical Field

[0001] The utility model relates to the field of glass curtain walls, in particular to a detection system for damage of pressing blocks of a building hidden-frame glass curtain wall. Background Art

[0002] When installing a glass curtain wall, pressing blocks are required to cooperate around each glass curtain wall. If the pressing blocks are damaged or fall off, there is a risk of the glass curtain wall falling.

[0003] In the prior art, the detection of the pressing blocks of the glass curtain wall is generally manual. However, if one side of the pressing block is aged and fails, but it is still installed in the corresponding position, it may be impossible for workers to judge whether the pressing block has failed by the naked eye.

[0004] The prior art can also be measured by installing sensors. However, sensors need to be installed once for each inspection of a glass curtain wall, resulting in low work efficiency and being troublesome.

[0005] Therefore, the prior art cannot conveniently identify or cannot identify whether the pressing blocks on the glass curtain wall have failed. The prior art is cumbersome for identifying pressing block damage, requiring the installation of sensor devices one by one, with low work efficiency. Summary of the Utility Model

[0006] To solve the technical problems existing in the prior art, an embodiment of the utility model provides a detection system for damage of pressing blocks of a building hidden-frame glass curtain wall. The device is simple to detect, and whether the pressing blocks corresponding to each glass curtain wall are damaged can be identified through a binocular camera. The technical solution is as follows:

[0007] A detection system for damage of pressing blocks of a building hidden-frame glass curtain wall includes: a host computer, a binocular camera, a frame, a calibration plate, a first pressing block, and a second pressing block;

[0008] The frame is integrally provided, and the frame includes n parallel cross beams and n parallel longitudinal beams. The cross beams and the longitudinal beams are perpendicularly arranged, and adjacent two cross beams and the corresponding intersecting longitudinal beams form a square structure. n≥3, and a glass curtain wall is installed in each square structure;

[0009] The calibration plate is installed on the glass curtain wall to be measured;

[0010] The frame is installed perpendicular to the ground, and the binocular camera photographs the glass curtain wall to be measured. Adjacent two glass curtain walls are connected by a second pressing block;

[0011] If there is no glass curtain wall on one side direction of the glass curtain wall, it is connected to the frame through a first pressing block; the side of the glass curtain wall without a glass curtain wall is installed on the frame through the first pressing block;

[0012] The host computer is connected to the binocular camera, and the host computer receives the video information of the glass curtain wall to be measured captured by the binocular camera.

[0013] Optionally, the calibration board is a checkerboard calibration board.

[0014] Optionally, the system further includes a bracket, the binocular camera is installed on the bracket, and the bracket supports lifting;

[0015] The distance between the two cameras in the binocular camera is adjustable.

[0016] Optionally, when the number of cross beams is 4, the number of longitudinal beams is 4, and the number of mouth-shaped structures is 9, the mouth-shaped structures in the frame are evenly distributed in a nine-square grid.

[0017] Optionally, the system further includes structural glue, and the glass curtain wall is adhered to the surface of the mouth-shaped structure in the frame through the structural glue.

[0018] Optionally, the first pressing block is integrally provided, a first pressing groove and a second pressing groove are longitudinally arranged in sequence on the same side of the first pressing block, the first pressing groove is connected to the frame surface through a bolt, and the second pressing groove presses against the surface of the glass curtain wall.

[0019] Optionally, the second pressing block is integrally provided, a third pressing groove, a fourth pressing groove and a fifth pressing groove are longitudinally arranged in sequence on the same side of the second pressing block, and the third pressing groove and the fifth pressing groove respectively press against the surfaces of two adjacent glass curtain walls;

[0020] The fourth pressing groove is installed on the cross beam or longitudinal beam between the two adjacent glass curtain walls through a bolt.

[0021] The beneficial effects brought by the technical solution provided by the embodiment of the present invention at least include:

[0022] The present invention uses a binocular camera to identify whether there is damage to the pressing block on the glass curtain wall. The method is simple and convenient, the experimental error rate is low, it is more accurate than manual identification, and simpler than sensor identification, and is more practical for large glass curtain wall projects that need to be detected. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1Is an isometric view of the overall structure provided by the embodiment of the present utility model;

[0025] Figure 2 Is an installation drawing of the frame and the glass curtain wall provided by the embodiment of the present utility model;

[0026] Figure 3 Is a front view and a side view of the first pressing block provided by the embodiment of the present utility model;

[0027] Figure 4 Is a front view and a side view of the second pressing block provided by the embodiment of the present utility model;

[0028] Figure 5 Is a structural diagram of the frame provided by the embodiment of the present utility model.

[0029] Reference numerals in the drawings:

[0030] 1. Binocular camera; 2. Frame; 21. Cross beam; 22. Longitudinal beam; 23. Square structure; 3. Checkerboard calibration plate; 4. First pressing block; 41. First pressing groove; 42. Second pressing groove; 5. Second pressing block; 51. Third pressing groove; 52. Fourth pressing groove; 53. Fifth pressing groove; a. Glass curtain wall. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those of ordinary skill in the art to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a", "an" or "the" do not denote a quantity limitation, but mean that there is at least one. The terms such as "comprising" or "including" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0033] It should be noted that the terms "upper", "lower", "left", "right", "front", "rear", etc. used in the present utility model are only used to represent relative positional relationships. When the absolute position of the object to be described changes, the relative positional relationship may also change accordingly.

[0034] In the prior art, to detect whether there is damage to the pressing block through a sensor, it is necessary to install a sensor on the glass curtain wall to be detected, and then strike the adjacent glass curtain wall. The sensor transmits the vibration frequency of the corresponding glass curtain wall to the computer. The computer pre-calculates the vibration frequencies of the glass curtain walls with single-sided damaged pressing blocks, double-sided damaged pressing blocks, and intact pressing blocks respectively, and then detects the glass curtain wall to be detected through the sensor to obtain its vibration frequency. By comparing the vibration frequency of the glass curtain wall to be detected with the vibration frequencies of the glass curtain walls with single-sided damaged pressing blocks, double-sided damaged pressing blocks, and intact pressing blocks, if the vibration frequency of the glass curtain wall to be detected = the vibration frequency of the glass curtain wall with single-sided damaged pressing blocks, it indicates that there is a problem with the pressing block on one side of this glass curtain wall, and the pressing block needs to be inspected and replaced. If the vibration frequency of the glass curtain wall to be detected = the vibration frequency of the glass curtain wall with double-sided damaged pressing blocks, there is a problem with the pressing blocks on both sides of this glass curtain wall, and the double-sided pressing blocks need to be inspected and replaced. If the vibration frequency of the glass curtain wall to be detected = the vibration frequency of the glass curtain wall with intact pressing blocks, then the pressing block of this glass curtain wall is okay. However, in the prior art, it is necessary to install sensors on each glass curtain wall to be detected, and the workload of disassembling and installing the sensors back and forth is very large, resulting in low work efficiency.

[0035] As Figures 1 to 5 shown, due to the low work efficiency of the prior art, the present utility model provides a detection system for damage to the pressing blocks of a building's hidden-frame glass curtain wall, including: a host computer, a binocular camera 1, a frame 2, a calibration plate, a first pressing block 4, and a second pressing block 5;

[0036] The frame 2 is integrally provided. The frame 2 includes n parallel crossbeams 21 and n parallel longitudinal beams 22. The crossbeams 21 are perpendicular to the longitudinal beams 22. Adjacent two crossbeams 21 and the corresponding intersecting longitudinal ones form a rectangular structure 23. n≥3. One glass curtain wall a is installed in each rectangular structure 23; the calibration plate is installed on the glass curtain wall a to be measured; the frame 2 is installed perpendicular to the ground. The binocular camera 1 photographs the glass curtain wall a to be measured. Adjacent two glass curtain walls a are connected by a second pressing block 5; if there is no glass curtain wall a on one side direction of the glass curtain wall a, it is connected to the frame 2 by a first pressing block 4; the side of the glass curtain wall a without a glass curtain wall is installed on the frame 2 by a first pressing block 4; the host computer is connected to the binocular camera 1, and the host computer receives the video information of the glass curtain wall a to be measured photographed by the binocular camera 1.

[0037] The specific structure and usage method of this system are as follows:

[0038] A plurality of glass curtain walls a are evenly installed on the frame 2. The materials, sizes, and models of the glass curtain wall a installed on the frame 2 and the glass curtain wall a to be detected are the same. An opening-shaped structure 23 is formed on the frame 2, and one glass curtain wall a is installed on each opening-shaped structure 23.

[0039] Among them, when the number of the cross beams 21 is 4, the number of the longitudinal beams 22 is 4, and the number of the opening-shaped structures 23 is 9, the opening-shaped structures 23 inside the frame 2 are evenly distributed in a nine-square grid. Assuming that each glass curtain wall a is numbered in sequence as A1 - A9:

[0040] Taking the detection of the glass curtain wall a of A1 as an example:

[0041] When it is necessary to measure the vibration frequency of the glass curtain wall a with complete pressing blocks, the pressing blocks around A1 are complete, that is: two first pressing blocks 4 are respectively arranged on each side above and on the left side of the glass curtain wall a of A1, and two second pressing blocks 5 are respectively arranged on each side below and on the right side of the glass curtain wall a of A1. The pressing blocks around A2 are also complete. Two first pressing blocks 4 are arranged on the upper side of the glass curtain wall a of A2, and two second pressing blocks 5 are respectively arranged on the other three sides. Then, a checkerboard calibration plate 23 is pasted on the glass curtain wall a of A1, and A2 is knocked manually or by a machine. The binocular camera 1 records the image information of the checkerboard calibration plate, and the binocular camera 1 transmits this image information to the upper computer. The upper computer calculates its displacement according to the video information of the checkerboard calibration plate, and then directly obtains the vibration frequency of the glass curtain wall a of A1 through Fourier transform, so as to obtain the standard value of the vibration frequency of the glass curtain wall a with complete pressing blocks. (In this embodiment, the specific algorithm processing in the upper computer is prior art. The prior art for the recognition and capture of the checkerboard calibration plate 3 and the calculation related to the vibration frequency are prior art and will not be elaborated.)

[0042] When it is necessary to measure the vibration frequency of the glass curtain wall a with damaged unilateral pressing blocks, all the first pressing blocks 4 on one side of the glass curtain wall a of A1 are removed. For example: the first pressing blocks 4 on the upper side of the glass curtain wall a of A1 are removed, two second pressing blocks 5 are respectively arranged on each side below and on the right side of the glass curtain wall a of A1, and two first pressing blocks 4 are arranged on the left side of the glass curtain wall a of A1. A2 is knocked manually or by a machine. The binocular camera 1 records the image information of the checkerboard calibration plate, and the binocular camera 1 transmits this image information to the upper computer. The upper computer calculates its displacement according to the video information of the checkerboard calibration plate, and then directly obtains the vibration frequency of the glass curtain wall a of A1 through Fourier transform, so as to obtain the standard value of the vibration frequency of the glass curtain wall a with damaged unilateral pressing blocks.

[0043] When it is necessary to measure the vibration frequency of the glass curtain wall a with damaged bilateral pressing blocks, all the first pressing blocks 4 on one side of the A1 glass curtain wall a are removed, and all the second pressing blocks 5 between A1 and A2 are removed. For example, two second pressing blocks 5 are arranged below the A1 glass curtain wall a, and two first pressing blocks 4 are arranged on the left side of the A1 glass curtain wall a, and the pressing blocks on the remaining sides are removed. The A2 is knocked manually or by a machine, and the binocular camera 1 records the image information of the checkerboard calibration board, and the binocular camera 1 transmits the image information to the upper computer. The upper computer calculates its displacement according to the video information of the checkerboard calibration board, and then directly obtains the vibration frequency of the A1 glass curtain wall a through Fourier transform, so as to obtain the standard value of the vibration frequency of the glass curtain wall with damaged bilateral pressing blocks.

[0044] After obtaining the standard values of the vibration frequencies of the glass curtain walls with complete pressing blocks, the standard values of the vibration frequencies of the glass curtain walls with single-sided pressing block damage, and the standard values of the vibration frequencies of the glass curtain walls with bilateral pressing block damage, in actual engineering, the two cameras in the binocular camera 1 are aligned with the glass curtain wall to be detected from two angles, and then the adjacent glass curtain walls (adjacent up and down or adjacent left and right are both okay) are knocked, and the three standard values are compared to obtain whether there is a pressing block failure and replace the pressing block in time. Among them, the force of each knock is manually controlled to be generally consistent, and only the frequencies need to be compared.

[0045] In a specific implementation manner, the system further includes a bracket, the binocular camera 1 is installed on the bracket, and the bracket supports lifting; the distance between the two cameras in the binocular camera 1 supports adjustment.

[0046] In a specific implementation manner, the system further includes structural glue, and the glass curtain wall is adhesively bonded to the surface of the mouth-shaped structure 23 in the frame 2 through the structural glue. The first pressing block 4 is integrally provided, and a first pressing groove 41 and a second pressing groove 42 are longitudinally arranged in sequence on the same side of the first pressing block 4. The first pressing groove 41 is connected to the surface of the frame 2 by bolts, and the second pressing groove 42 presses against the surface of the glass curtain wall.

[0047] In a specific implementation manner, the second pressing block 5 is integrally provided, and a third pressing groove 51, a fourth pressing groove 52 and a fifth pressing groove 53 are longitudinally arranged in sequence on the same side of the second pressing block 5. The third pressing groove 51 and the fifth pressing groove 53 respectively press against the surfaces of two adjacent glass curtain walls;

[0048] The fourth pressing groove 52 is installed on the cross beam 21 or the longitudinal beam 22 between the two adjacent glass curtain walls through bolts.

[0049] This system does not require multiple disassembly of sensors for sequential installation and sequential data recording, and only needs to move the binocular camera 1.

[0050] In addition, the pan-tilt of the binocular camera 1 supports lifting, and the distance between the two cameras of the binocular camera 1 is adjustable. The specific structure of the binocular camera 1 is the prior art and will not be elaborated in this embodiment.

[0051] In this embodiment, an error comparison is made with the measured values of the prior art. The error between the results of the binocular camera recognition technology and the results recorded by the sensor is not large, as shown in Table 1 below:

[0052] Table 1 Measured frequencies of the hidden frame glass curtain wall under different damage conditions of the pressing blocks

[0053] Glass curtain wall type Non-destructive Unilateral pressing block damage Bilateral pressing block damage Binocular vision analysis frequency / Hz 11.98 11.71 8.6 Acceleration signal analysis frequency / Hz 12.21 11.72 9.22 Error 1.8% 0.001% 6.72%

[0054] By analyzing the displacement of the special marker points and the signals collected by the acceleration sensor, the first-order vibration frequency of the glass curtain wall is obtained. As the degree of damage of the pressing block increases, the first-order natural frequency of the hidden frame glass curtain wall shows a downward trend. When the pressing block is damaged unilaterally, the frequency change is small; when the pressing block is damaged bilaterally, the frequency change is large. The first-order frequency is tested by the binocular vision method, and the error with the first-order frequency tested by the contact acceleration sensor and the laser displacement meter is small. It can basically verify the accuracy of the binocular vision method for detecting the damage of the pressing blocks of the hidden frame glass curtain wall. In engineering, the binocular vision method can be used to detect the damage of the pressing blocks of the hidden frame glass curtain wall.

[0055] The present utility model uses a binocular camera to identify whether there is damage to the pressing blocks on the glass curtain wall. The method is simple and convenient, with a low experimental error rate, more accurate than manual identification, and simpler than sensor identification, making it more practical for large glass curtain wall projects that need to be detected.

[0056] The following points need to be explained:

[0057] (1) The attached drawings of the embodiments of the present utility model only relate to the structures involved in the embodiments of the present utility model, and other structures can refer to the general design.

[0058] (2) For clarity, in the attached drawings used to describe the embodiments of the present utility model, the thickness of the layer or region is enlarged or reduced, that is, these drawings are not drawn according to the actual proportion. It can be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element or there can be an intermediate element.

[0059] (3) Without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0060] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. The protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A building hidden frame glass curtain wall block damage detection system, characterized in that: include: Host computer, binocular camera, frame, calibration plate, first pressing block and second pressing block; The frame is integrally arranged, and comprises n parallel horizontal beams and n parallel longitudinal beams, the horizontal beams are arranged perpendicular to the longitudinal beams, two adjacent horizontal beams and corresponding intersecting longitudinal beams form a mouth-shaped structure, n≥3, and a glass curtain wall is installed in each mouth-shaped structure; The calibration plate is installed on the glass curtain wall to be tested; The frame is installed vertically on the ground, the binocular camera photographs the glass curtain wall to be tested, and two adjacent glass curtain walls are connected by a second pressing block; If a glass curtain wall is not provided on one side of the glass curtain wall, it is connected to the frame via a first pressing block; the side of the glass curtain wall without a glass curtain wall is mounted on the frame via the first pressing block; The host computer is connected to the binocular camera, and the host computer receives video information of the glass curtain wall to be tested shot by the binocular camera.

2. The building hidden frame glass curtain wall block damage detection system according to claim 1 is characterized in that: The calibration plate is a checkerboard calibration plate.

3. The building hidden frame glass curtain wall block damage detection system according to claim 2 is characterized in that: It also includes a bracket, the binocular camera is installed on the bracket, and the bracket supports lifting; The distance between the two cameras in the binocular camera can be adjusted.

4. The building hidden frame glass curtain wall block damage detection system according to claim 1 is characterized in that: When the number of the cross beams is 4, the number of the longitudinal beams is 4, and the number of the mouth-shaped structures is 9, the mouth-shaped structures in the frame are evenly distributed in a nine-square grid.

5. The building hidden frame glass curtain wall block damage detection system according to claim 1 is characterized in that: It also includes structural adhesive, and the glass curtain wall is adhered to the surface of the mouth-shaped structure in the frame through the structural adhesive.

6. The building hidden frame glass curtain wall block damage detection system according to claim 1 is characterized in that: The first pressing block is integrally arranged, and a first pressing groove and a second pressing groove are longitudinally arranged in sequence on the same side of the first pressing block, the first pressing groove is connected to the frame surface by bolts, and the second pressing groove presses toward the surface of the glass curtain wall.

7. The building hidden frame glass curtain wall block damage detection system according to claim 1 is characterized in that: The second pressing block is integrally arranged, and a third pressing groove, a fourth pressing groove and a fifth pressing groove are sequentially arranged longitudinally on the same side of the second pressing block, and the third pressing groove and the fifth pressing groove are respectively pressed toward the surfaces of two adjacent glass curtain walls; The fourth pressing groove is installed on the cross beam or longitudinal beam between the two adjacent glass curtain walls by means of bolts.

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