A building deformation detection device and a detection method

Abstract

The present application relates to the field of metrological equipment characterized by employing optical methods, in particular to a building deformation detection equipment and a detection method, the equipment comprising a support frame, a flat plate; the flat plate is provided with a light band generating assembly capable of generating a standard light band; the front side of the flat plate is provided with a flexible curtain; a light shielding assembly capable of making the side of the flexible curtain away from the building to be detected in a dark environment is arranged between the light band generating assembly and the flexible curtain; a shooting assembly for shooting the display light band displayed on the flexible curtain is installed on the light shielding assembly, and the method is applied to the detection equipment. The existing building deformation detection equipment and detection method have the problems of low detection efficiency and easy to miss some sudden changes, and the detection equipment and detection method provided by the present application have high detection efficiency and can easily find some sudden changes.

Description

Technical Field

[0001] This invention relates to the field of metrology equipment characterized by employing optical methods, and more specifically to a building deformation detection device and detection method. Background Technology

[0002] The structural safety of buildings is directly related to the safety of people's lives and property. Therefore, it is essential to measure building deformation to prevent potential safety accidents. There are many types of building deformation detection, including detecting whether the foundation or subgrade has settled or heaved, changes in the horizontal position of the structure, vertical deviations of the entire building or parts thereof, and cracks and deformations of the building under test.

[0003] There are many methods available for inspecting a building. The simplest and most direct method is to visually inspect the building for cracks, tilting, and other signs of deformation. This method is suitable for preliminary inspections, but its accuracy is relatively low. Therefore, specialized tools such as crack width gauges or crack length rulers are used to regularly observe and record existing cracks in order to assess the development of cracks and the degree of deformation of the building.

[0004] However, some buildings under test are in potentially risky environments or have progressive damage. These buildings require long-term continuous monitoring to track changes and prevent safety hazards from turning into safety accidents. This requires testing personnel to operate the instruments several times a day, which is time-consuming, labor-intensive, and has low testing efficiency. The long intervals between tests also make it easy to miss some sudden changes.

[0005] Therefore, existing building deformation detection equipment and methods suffer from low detection efficiency and are prone to missing some sudden changes. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a building deformation detection device and method with high detection efficiency and easy detection of some sudden changes.

[0007] To solve the above-mentioned technical problems, the present invention provides a building deformation detection device including a support frame and a plate rotatably mounted on the top of the support frame and capable of rotating around a horizontal direction; a light strip generating component capable of generating a standard light strip is provided on the plate; a flexible screen capable of being pressed against the building to be tested and used to display the standard light strip generated by the light strip generating component is provided on the front side of the plate; a light-shielding component is provided between the light strip generating component and the flexible screen to keep the side of the flexible screen away from the building to be tested in a dark environment; and a shooting component for capturing the displayed light strip shown on the flexible screen is installed on the light-shielding component.

[0008] As a further improvement of the present invention: a tilt detection component capable of automatically detecting the tilt of a building is installed on the support frame.

[0009] Preferably, the tilt detection component includes a sector gear that can rotate synchronously with the plate when the plate rotates. The sector gear is connected to a horizontal large rotating shaft, and the large rotating shaft is connected to a horizontal small rotating shaft. Photoelectric sensors are provided on both sides of the small rotating shaft. Multiple centrifugal swing blocks that can block the photoelectric sensors when the small rotating shaft rotates are vertically installed on the small rotating shaft. A first gear is fixedly sleeved on the end of the large rotating shaft away from the small rotating shaft. A scale that can read the tilt angle of the building under test as the first gear rotates is provided above the first gear.

[0010] As a further improvement of the present invention: the light strip generating assembly includes a downward-facing groove fixedly mounted on the top of a flat plate, a light source being mounted on the rear side wall of the groove, and two parallel vertical slits being formed on the front side wall of the groove to allow the light emitted by the light source to form a standard light strip.

[0011] Preferably, horizontal bars are vertically installed at the upper left, lower left, upper right, and lower right corners of the front sidewall of the tank; the light-shielding assembly includes a left vertical plate fixedly installed between the two horizontal bars on the left side and a right vertical plate fixedly installed between the two horizontal bars on the right side; a flexible screen is detachably installed between the left and right vertical plates; an upper chain capable of changing shape is installed at the top of the flexible screen, and a lower chain capable of changing shape is installed at the bottom of the flexible screen; the left ends of both the upper and lower chains are hinged to the left vertical plate, and the right ends of both the upper and lower chains are hinged to the right vertical plate.

[0012] The top of the trough and the bottom of the plate are equipped with multiple retractable light-shielding strips from left to right.

[0013] Preferably, strip-shaped mounting blocks are fixedly installed on both the top of the trough and the bottom of the plate. The light-shielding strip includes a long section and a short section that are perpendicular to each other. The long section of the light-shielding strip is slidably installed in the mounting block, and a horizontal first return spring is installed vertically between the short section of the light-shielding strip and the mounting block.

[0014] Preferably, both the upper and lower chains include multiple connecting rods arranged in a straight line from left to right and hinged end to end in sequence. The left end of the connecting rod is provided with a pair of second auxiliary lugs, and the right end of the connecting rod is provided with a second main lug that can extend between the pair of second auxiliary lugs. The pair of second auxiliary lugs and the second main lug of adjacent connecting rods are rotatably connected by a second pin.

[0015] Preferably, the imaging assembly includes a left camera and a right camera respectively mounted on the left and right vertical plates for acquiring images of the side of the flexible screen away from the building under test.

[0016] This invention also provides a method for detecting building deformation. The method is applied to the aforementioned building deformation detection device and includes: attaching a flexible screen to the building to be tested; using a light-blocking component to ensure that the side of the flexible screen away from the building to be tested is in a dark environment; using a light strip generating component to generate a standard light strip at fixed intervals; using the flexible screen to display the standard light strip generated by the light strip generating component; referring to the light strip displayed on the flexible screen as the display light strip; using a shooting component to photograph the display light strip displayed on the flexible screen to obtain light strip photographs; comparing each light strip photograph to observe whether there are differences in the display light strips; if there are differences, the building has deformed.

[0017] The beneficial effects of the present invention are as follows: The building deformation detection equipment and method provided by the present invention have high detection efficiency and can easily detect some sudden changes.

[0018] This device uses a flexible screen that adheres closely to the building under test. This screen displays a standard light strip generated by a light-generating component, along with a light-shielding component and the light strip generating component. The light strip is displayed on the flexible screen at fixed intervals of 3 hours, 6 hours, 12 hours, and 24 hours. Simultaneously, after the light strip is displayed, an imaging component captures images of it on the flexible screen. When the building under test deforms, the light strip will twist, break, or shift. Staff in the office can obtain images from the imaging component and compare the state of the light strip in images taken at different time intervals to determine if the building has deformed. This device allows for long-term monitoring with only a one-time setup, and the monitoring intervals can be set relatively short, making it easy to detect sudden changes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle;

[0021] Figure 3 This is a top view of the present invention;

[0022] Figure 4 This is a schematic diagram of the overall structure of the support frame of the present invention;

[0023] Figure 5 This is an assembly drawing of the plate, the tank, and the mounting block in this invention;

[0024] Figure 6 This is a schematic diagram of the overall structure of the flexible screen in this invention;

[0025] Figure 7 This is an assembly diagram of the mounting block and the card holder at the bottom of the flat plate in this invention;

[0026] Figure 8 This is an assembly diagram of the connecting block and the sector gear in this invention;

[0027] Figure 9 This is an assembly diagram of the partial light-shielding component, the partial light strip generating component, and the imaging component in this invention;

[0028] Figure 10 for Figure 9 A magnified schematic diagram of the partial structure at point A in the middle;

[0029] Figure 11 This is a schematic diagram showing the positional relationship between the support frame and the large rotating shaft in this invention;

[0030] Figure 12 This is a perspective view of the overall structure of the small rotating shaft and the seventh gear in this invention;

[0031] Figure 13 This is a schematic diagram showing the positional relationship between each centrifugal throwing block and the second reset spring in this invention;

[0032] Figure 14 This is a partial cross-sectional schematic diagram of the small rotating shaft, centrifugal throwing block, and second reset spring in this invention;

[0033] Figure 15 This is an assembly diagram of the support frame, tilt detection component, and light strip generating component in this invention;

[0034] Figure 16 This is a partial structural schematic diagram of the tilt detection component in this invention;

[0035] The names of the components corresponding to the markings in the above figures are as follows: 101, support frame; 1011, inverted U-shaped frame; 1012, first main ear plate; 1013, first pin; 102, flat plate; 103, flexible curtain; 1031, plug-in block; 1032, snap-fit ​​block; 104L, left vertical plate; 104R, right vertical plate; 1041, slot; 105U, upper chain; 105D, lower chain; 1051, connecting rod; 1052, second auxiliary ear plate; 1053, second main ear plate; 1054, second pin; 1055, strip groove; 106, light-shielding strip; 107, mounting block; 1071, card holder; 108, first return spring; 109, connecting block; 1091, card block; 1092, first auxiliary ear plate;

[0036] 2. Light strip generating assembly; 201. Slot; 2011. Vertical slit; 2012. Horizontal bar; 202. Light source;

[0037] 3. Shooting components; 301L, left camera; 301R, right camera;

[0038] 4. Tilt detection assembly; 401. Sector gear; 402. Large rotating shaft; 403. Small rotating shaft; 4031. Sliding block groove; 404. Photoelectric sensor; 405. Centrifugal sliding block; 4051. Second return spring; 406. First gear; 407. Scale; 408. Rack; 409. Semicircular protrusion;

[0039] 501. Second gear; 502. Third gear; 503. Fourth gear; 504. Fifth gear; 505. First transmission belt; 506. Sixth gear; 507. Seventh gear; 508. Second transmission belt. Detailed Implementation

[0040] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0041] In this invention, directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" are all used in conjunction with... Figure 3 The direction defined by the central cross-shaped directional marker is the reference. In this invention, all directional terms are described based on this definition and do not change the direction they represent regardless of the angle of the diagram.

[0042] like Figure 1 , Figure 2 , Figure 3 As shown, the building deformation detection device provided by the present invention includes a support frame 101 and a plate 102 rotatably mounted on the top of the support frame 101 and capable of rotating around the horizontal direction; a light strip generating component 2 capable of generating a standard light strip is provided on the plate 102, the standard light strip being composed of several alternating vertical bright and dark stripes; a flexible screen 103 capable of adhering to the building to be measured and capable of changing shape is provided on the front side of the plate 102 for displaying the standard light strip generated by the light strip generating component 2, the standard light strip being displayed on the side of the flexible screen 103 away from the building to be measured; a light-shielding component is provided between the light strip generating component 2 and the flexible screen 103 to keep the side of the flexible screen 103 away from the building to be measured in a dark environment.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16As shown, a tilt detection component 4 capable of automatically detecting the tilt angle of a building is installed on the support frame 101. The tilt detection component 4 includes a sector gear 401 that rotates synchronously with the plate 102 when the plate 102 rotates. The sector gear 401 is connected to a horizontal large rotating shaft 402 via a first transmission component. The large rotating shaft 402 is connected to a horizontal small rotating shaft 403 via a second transmission component. Photoelectric sensors 404 are provided on both the left and right sides of the small rotating shaft 403. Multiple centrifugal swing blocks 405 that can block the photoelectric sensors 404 when the small rotating shaft 403 rotates are vertically installed on the small rotating shaft 403. A first gear 406 is fixedly sleeved on the end of the large rotating shaft 402 away from the small rotating shaft 403. A scale 407 that can read the tilt angle of the building to be measured as the first gear 406 rotates is provided above the first gear 406. The first transmission component includes a second gear 501 located below and meshing with the sector gear 401, and a third gear 502 located below and meshing with the second gear 501. A fourth gear 503 and a fifth gear 504 are fixedly sleeved on the large rotating shaft 402, and the fourth gear 503 and the fifth gear 504 are respectively connected to the third gear 502 via a first transmission belt 505. The second transmission component includes a sixth gear 506 fixedly sleeved on the large rotating shaft 402 and a seventh gear 507 located on the small rotating shaft 403. The sixth gear 506 is connected to the third gear 502 via a second transmission belt 505. The belt 508 is connected to the seventh gear 507 for transmission; a rack 408 is provided above the first gear 406, which meshes with the first gear 406 and can slide back and forth as the first gear 406 rotates; an inverted U-shaped frame 1011 is fixedly installed on the top of the base plate of the support frame 101. The inverted U-shaped frame 1011 includes one horizontal end and two vertical ends. The rack 408 is slidably installed between the two vertical ends of the inverted U-shaped frame 1011. A semi-circular protrusion 409 that allows the scale 407 to slide up and down is fixedly installed on the top of the rack 408. The scale 407 is slidably installed on the horizontal end of the inverted U-shaped frame 1011. The small rotating shaft 403 has a solid cylindrical structure. The small rotating shaft 403 has a sling groove 4031 around its central axis, which allows each centrifugal sling block 405 to reciprocate radially along the small rotating shaft 403. At least one second return spring 4051 is provided between the bottom of each sling groove 4031 and the centrifugal sling block 405. The second return spring 4051 can extend and retract radially along the small rotating shaft 403.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10As shown, the light strip generating assembly 2 includes a downward-facing groove 201 fixedly mounted on the top of the plate 102. A light source 202 is mounted on the rear side wall of the groove 201. Two parallel vertical slits 2011 are formed on the front side wall of the groove 201 to allow the light emitted by the light source 202 to form a standard light strip. The front side wall of the groove 201 with two vertical slits 2011 is actually equivalent to the double slit plate in the double slit interference experiment. A horizontal bar 2012 is vertically installed at the upper left, lower left, upper right, and lower right corners of the front sidewall of the trough 201. The light-shielding assembly includes a left vertical plate 104L fixedly installed between the two horizontal bars 2012 on the left side and a right vertical plate 104R fixedly installed between the two horizontal bars 2012 on the right side. A flexible screen 103 is detachably installed between the left vertical plate 104L and the right vertical plate 104R. Multiple insertion blocks 1031 are provided on both the left and right sides of the flexible screen 103. The left vertical plate 104L and the right vertical plate 104R are respectively provided with insertion points that can connect to various... The plug-in block 1031 is inserted into multiple slots 1041; the top of the flexible screen 103 is equipped with an upper chain 105U that can change shape, and the bottom of the flexible screen 103 is equipped with a lower chain 105D that can change shape. The left ends of the upper chain 105U and the lower chain 105D are hinged to the left vertical plate 104L via a second pin, and the right ends of the upper chain 105U and the lower chain 105D are hinged to the right vertical plate 104R via a second pin; the top of the slot 201 and the bottom of the plate 102 are provided with multiple light-shielding strips 106 that can extend and retract from left to right. The top of the slot 201 and the bottom of the plate 102 are fixedly installed with strip-shaped mounting blocks 107. The light-shielding strips 106 include mutually perpendicular long sections and short sections, forming an L-shaped structure. The long section of the light-shielding strip 106 is slidably installed in the mounting block 107. The mounting block 107 has a horizontal sliding hole for the long section of the light-shielding strip 106 to pass through. A horizontal first return spring 108 is vertically installed between the short section of the light-shielding strip 106 and the mounting block 107. The upper chain 105U and the lower chain 105D both include multiple connecting rods 1051 arranged in a straight line from left to right and hinged end to end. The left end of the connecting rod 1051 is provided with a pair of second auxiliary ear plates 1052, and the right end of the connecting rod 1051 is provided with a second main ear plate 1053 that can extend between the pair of second auxiliary ear plates 1052. The pair of second auxiliary ear plates 1052 and the second main ear plate 1053 of adjacent connecting rods 1051 are rotatably connected by a second pin 1054.Multiple snap-fit ​​blocks 1032 are provided at the top and bottom of the flexible screen 103. Each snap-fit ​​block 1032 includes a vertical piece installed on the flexible screen 103 and a horizontal piece installed vertically on the end of the vertical piece away from the flexible screen 103. The number and position of the snap-fit ​​blocks 1032 are matched with the number and position of the connecting rods 1051 in the upper chain 105U and the lower chain 105D. Each connecting rod 1051 has a strip groove 1055 that can be inserted into the vertical piece. After the vertical piece is inserted into the strip groove 1055, the horizontal piece can prevent the vertical piece from separating from the strip groove 1055. At least two mounting brackets 1071 are fixedly installed on the bottom of the mounting block 107 located at the bottom of the flat plate 102. A sector gear 401 is fixedly installed on the bottom of the connecting block 109. Two pairs of first auxiliary ear plates 1092 are provided on the bottom of the connecting block 109. A first main ear plate 1012 is provided on the top of the support frame 101, which matches the position, number, shape, and size of the first auxiliary ear plates 1092. Each pair of first auxiliary ear plates 1092 is connected to the first main ear plate 1012 pin through a first pin 1013. A locking block 1091 matching the position, number, shape, and size of the mounting bracket 1071 is fixedly installed on the top of the connecting block 109. Each locking block 1091 is engaged in the mounting bracket 1071. A shooting component 3 for shooting the display light strip displayed on the flexible screen 103 is installed on the light-shielding assembly. The imaging assembly 3 includes a left camera 301L and a right camera 301R, respectively mounted on the left vertical plate 104L and the right vertical plate 104R, for acquiring images of the side of the flexible screen 103 away from the building under test.

[0045] This invention also provides a method for detecting building deformation using the aforementioned building deformation detection equipment, comprising: attaching a flexible screen 103 tightly to the building to be tested; using a light-blocking component to ensure that the side of the flexible screen 103 away from the building is in a dark environment; using a light strip generating component 2 to generate a standard light strip at fixed intervals; using the flexible screen 103 to display the standard light strip generated by the light strip generating component 2; referring to the light strip displayed on the flexible screen 103 as the display light strip; using a shooting component 3 to capture images of the display light strip displayed on the flexible screen 103 to obtain light strip photographs; comparing each light strip photograph to observe whether there are differences in the display light strip; if there are differences, the building has deformed. When the wall tilts, the tilt detection component 4 can automatically detect the building's tilt.

[0046] The working principle of this invention is as follows: This principle is explained using the detection of building walls as an example, but the device can also detect exposed structures such as doors, windows, and columns of buildings.

[0047] Move the testing equipment to the wall of the building to be tested. Install suction cups on the support frame 101 that can contact the ground, and use the suction cups to fix the support frame 101 in place. Then rotate the plate 102 and adjust its angle so that the flexible curtain 103 is tightly against the wall. At this time, the ends of the four crossbars 2012 on the front wall of the groove 201, away from the groove 201, are also in contact with the wall. Since the entire plate 102 can rotate back and forth, the crossbars 2012 provide support, allowing the plate 102 to remain in its current position without external force. Record the scale reading on the ruler 407 at this time, and whether the bottom of the ruler 407 is in contact with the front or back side of the top of the semi-circular protrusion 409. Even if the wall itself has protrusions, curves, corners, or tilts, the device can still fit snugly because the flexible curtain 103 is deformable. When the flexible curtain 103 deforms, the second auxiliary ear plate 1052 and the second main ear plate 1053 will also rotate around the second pin 1054, so that the flexible curtain 103 can still be supported even if it deforms. Secondly, when the wall is uneven, the protruding part of the wall will contact the light-blocking strip 106, causing the light-blocking strip 106 to slide backward in the mounting block 107, compressing the first return spring 108. When the device leaves the wall, the first return spring 108 will gradually extend back to its natural extension state, driving the light-blocking strip 106 back to its initial position.

[0048] After confirming that the flexible screen 103 is tightly attached to the wall, the light source 202 is turned on. The light source 202 is a laser light source. The light emitted by the light source 202 passes through the two vertical slits 2011, producing double-slit interference fringes, i.e., standard light bands. After the standard light bands are displayed on the flexible screen 103, they will change due to the influence of the shape of the flexible screen 103, and will be different from the standard light bands. Therefore, the light bands displayed on the flexible screen 103 are called display light bands. Then, the left camera 301L and the right camera 301R are turned on to capture images of the side of the flexible screen 103 away from the building under test. These images contain the images of display light bands. The left camera 301L and the right camera 301R will send the acquired images to the host computer through a remote wireless communication module. The staff can browse the images acquired by the device on the host computer and judge whether there is a deformation problem in the wall by comparing the shape differences of the display light bands in the images captured at fixed intervals. When the wall is deformed, the display light bands will appear distorted or blurred, which is more accurate than visual observation.

[0049] When the wall tilts, the flexible screen 103 and the entire light strip generating assembly 2, which are tightly attached to the wall, will also tilt along with the wall. At this time, the flat plate 102 will rotate forward or backward until the crossbar 2012 re-abuts against the wall. During the rotation of the flat plate 102, the connecting block 109 will rotate. At this time, the first ear plate 1092 will rotate around the first pin 1013. The sector gear 401 will rotate synchronously with the rotation of the connecting block 109, and the rotation direction and angle will be the same. The sector gear 401 will drive the second gear 501 to rotate, the second gear 501 will drive the third gear 502 to rotate, and the third gear 502 will drive the second gear 502 through the two first transmission belts 505. The rotation of gears 503 and 504 drives the rotation of the large shaft 402. The rotation of the large shaft 402 drives the rotation of gears 406 and 506. The rotation of gear 406 causes the rack 408 to slide forward or backward. The bottom of the scale 407 contacts the top of the semi-circular protrusion 409. The top of the semi-circular protrusion 409 has a semi-circular arc structure. Therefore, when the semi-circular protrusion 409 moves forward or backward with the rack 408, it also moves forward or backward. The bottom of the scale 407 always remains in contact with the top of the semi-circular protrusion 409, thus moving upward or downward, changing the reading position. After a period of time, by comparing the reading of the scale 407 and whether its bottom is in contact with the front or back of the top of the semi-circular protrusion 409 with the initially recorded information, it can be determined whether the wall is tilted forward or backward, and by how much. The rotation of the sixth gear 506 drives the seventh gear 507 to rotate via the second transmission belt 508. The seventh gear 507 drives the small shaft 403 to rotate. When the small shaft 403 rotates, each centrifugal throwing block 405 moves radially away from the central axis of the small shaft 403 in the throwing block groove 4031, extending outside the small shaft 403. The second return spring 4051 is stretched and in an extended state. The photoelectric sensors 404 are all through-beam photoelectric sensors. The light emitted by the emitter of the photoelectric sensor 404 on the left is received by the receiver of the photoelectric sensor 404 on the right. The light emitted by the transmitter is received by the receiver of the photoelectric sensor 404 located on the left, forming two intersecting light paths. The extended centrifugal block 405 blocks the light emitted by the transmitters of the two photoelectric sensors 404. The receivers of the two photoelectric sensors 404 will detect whether they receive light in real time. When the light path is blocked by the centrifugal block 405, the intensity of the light signal of the two receivers drops sharply. The two photoelectric sensors 404 will convert the light signal change into a current change, thereby outputting a current value change. The current value change will be sent to the host computer through the wireless communication module. In this way, the staff can know that the wall has suddenly tilted and can go to the site to investigate and deal with it.When the wall tilting stops and the small rotating shaft 403 stops rotating, the second return spring 4051 gradually shortens back to its initial state, causing each centrifugal throwing block 405 to move radially along the small rotating shaft 403 towards the central axis of the small rotating shaft 403. In this way, the device can achieve instantaneous and long-term detection of wall tilt.

[0050] The left camera 301L, right camera 301R, light source 202, and each photoelectric sensor 404 are all electrically connected to the main controller, model STM32L431RCT6. The main controller can control the operation of the left camera 301L, right camera 301R, light source 202, and each photoelectric sensor 404. The main controller has a remote wireless communication module, model Quectel EC200T-CN, which can transmit the images acquired by the left camera 301L and right camera 301R, as well as the data changes from each photoelectric sensor 404, to the host computer. All electrical components of the device are powered by a battery.

[0051] It should be noted that the present invention is not limited to the specific structure shown in the accompanying drawings in the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art.

Claims

1. A building deformation detection device, characterized in that, It includes a support frame (101) and a plate (102) that is rotatably mounted on top of the support frame (101) and is capable of rotating about the horizontal direction. A light strip generating component (2) capable of generating a standard light strip is provided on the flat plate (102); a flexible screen (103) capable of adhering to the building under test and used to display the standard light strip generated by the light strip generating component (2) is provided on the front side of the flat plate (102); a light-shielding component capable of keeping the side of the flexible screen (103) away from the building under test in a dark environment is provided between the light strip generating component (2) and the flexible screen (103); The light-blocking assembly is equipped with a shooting component (3) for shooting the display light strip displayed on the flexible screen (103). The light strip generating assembly (2) includes a downward-facing slot (201) fixedly mounted on the top of a flat plate (102). A light source (202) is mounted on the rear side wall of the slot (201). Two parallel vertical slits (2011) are opened on the front side wall of the slot (201) to allow the light emitted by the light source (202) to form a standard light strip. Horizontal bars (2012) are vertically mounted at the upper left, lower left, upper right, and lower right corners of the front side wall of the slot (201). The light-shielding assembly includes a left vertical plate (104L) fixedly mounted between the two horizontal bars (2012) on the left side and a right vertical plate (104L) fixedly mounted between the two horizontal bars (2012) on the right side. 04R); The flexible screen (103) is detachably installed between the left vertical plate (104L) and the right vertical plate (104R); The top of the flexible screen (103) is equipped with an upper chain (105U) that can change shape, and the bottom of the flexible screen (103) is equipped with a lower chain (105D) that can change shape. The left ends of the upper chain (105U) and the lower chain (105D) are both hinged to the left vertical plate (104L), and the right ends of the upper chain (105U) and the lower chain (105D) are both hinged to the right vertical plate (104R); The top of the groove (201) and the bottom of the flat plate (102) are both provided with multiple light-blocking strips (106) that can extend and retract from left to right. The support frame (101) is equipped with a tilt detection component (4) that can automatically detect the tilt of the building; the tilt detection component (4) includes a sector gear (401) that can rotate synchronously with the plate (102) when the plate (102) rotates. The sector gear (401) is connected to a horizontal large rotating shaft (402) and the large rotating shaft (402) is connected to a horizontal small rotating shaft (403). Photoelectric sensors (404) are provided on both the left and right sides of the small rotating shaft (403). Multiple centrifugal blocks (405) that can block the photoelectric sensors (404) when the small rotating shaft (403) rotates are vertically installed on the small rotating shaft (403). A first gear (406) is fixedly sleeved on the end of the large rotating shaft (402) away from the small rotating shaft (403). A scale (407) that can read the tilt angle of the building to be measured as the first gear (406) rotates is provided above the first gear (406).

2. The building deformation detection device according to claim 1, characterized in that, The top of the groove (201) and the bottom of the plate (102) are both fixedly installed with strip-shaped mounting blocks (107). The light-shielding strip (106) includes a long section and a short section that are perpendicular to each other. The long section of the light-shielding strip (106) is slidably installed in the mounting block (107). A horizontal first return spring (108) is vertically installed between the short section of the light-shielding strip (106) and the mounting block (107).

3. The building deformation detection device according to claim 1, characterized in that, The upper chain (105U) and lower chain (105D) each include multiple connecting rods (1051) arranged in a straight line from left to right and hinged end to end. The left end of the connecting rod (1051) is provided with a pair of second auxiliary ear plates (1052), and the right end of the connecting rod (1051) is provided with a second main ear plate (1053) that can extend between the pair of second auxiliary ear plates (1052). The pair of second auxiliary ear plates (1052) and the second main ear plate (1053) of adjacent connecting rods (1051) are rotatably connected by a second pin (1054).

4. The building deformation detection device according to claim 1, characterized in that, The shooting assembly (3) includes a left camera (301L) and a right camera (301R) respectively mounted on the left vertical plate (104L) and the right vertical plate (104R) for acquiring images of the side of the flexible screen (103) away from the building under test.

5. A method for detecting building deformation, wherein the method is applied to the building deformation detection equipment described in claim 1, characterized in that, include: The flexible screen (103) is attached to the building to be tested. The light-blocking component is used to keep the side of the flexible screen (103) away from the building to be tested in a dark environment. The light strip generating component (2) generates a standard light strip at fixed intervals. The flexible screen (103) is used to display the standard light strip generated by the light strip generating component (2). The light strip displayed on the flexible screen (103) is called the display light strip. The imaging component (3) is used to take pictures of the display light strip displayed on the flexible screen (103) to obtain light strip photos. Compare each light strip photo to observe whether there is a difference in the display light strip. If there is a difference, the building has been deformed.

Images