Fixing support of image collection device for internal defect detection of concrete structure and online inspection and numerical quantification system for internal defect of concrete structure

Abstract

The utility model discloses a kind of fixing support of image acquisition device of concrete structure internal defect detection and a kind of concrete structure internal defect online inspection and numerical quantification system, the fixing support of image acquisition device includes plugging piece and connecting rod, two the plugging piece is arranged at the both ends of the image acquisition device, one end of the connecting rod is connected with the plugging piece, the plugging piece includes rubber tire body and hub, the rubber tire body is arranged in concrete drilling and can be expanded after with the hole wall of the concrete drilling abuts, the hub is located in the inside of the rubber tire body, one end of the connecting rod is connected with the hub, the other end of the connecting rod is connected with image acquisition device intercommunication, the cable of the image acquisition device is worn out the plugging piece through the connecting rod.The fixing support of image acquisition device of concrete structure internal defect detection provided by the utility model has the advantages of small environmental influence and convenient installation.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower engineering inspection technology, and in particular to a fixed bracket for an image acquisition device for detecting internal defects in concrete structures and an online inspection and numerical quantification system for internal defects in concrete structures. Background Technology

[0002] Concrete structures are prone to developing both shallow external cracks and deep internal cracks due to temperature or stress, accompanied by defects such as water seepage and efflorescence. In engineering projects, drilling combined with digital imaging is typically used to inspect the development of internal defects. However, traditional inspection methods suffer from numerous drawbacks, including numerous instrument components, complex manual operation procedures, long processing times, image quality susceptible to interference, high cost and susceptibility to damage from repeated dragging of components, inability to promptly observe dynamic changes in internal defects during strong earthquakes or heavy rainstorms, and the inability to achieve automated quantitative assessment and risk warning. Currently used fixed supports are cumbersome to install and are greatly affected by environmental factors, impacting image acquisition quality. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose an online inspection and numerical quantification system for internal defects in concrete structures. The fixed bracket of this image acquisition device has the advantages of being less affected by the environment and being easy to install.

[0004] According to an embodiment of the present invention, the fixed support of the image acquisition device for detecting internal defects in concrete structures includes a sealing component and a connecting rod. Two sealing components are arranged at both ends of the image acquisition device. One end of the connecting rod is connected to the sealing component. The sealing component includes a rubber body and a hub. The rubber body is arranged in a concrete borehole and can expand to abut against the borehole wall. The hub is located inside the rubber body to support it. One end of the connecting rod is connected to the hub, and the other end is connected to the image acquisition device. The cable of the image acquisition device passes through the sealing component via the connecting rod to electrically connect with a data receiving device for signal transmission.

[0005] The online inspection and numerical quantification system for internal defects in concrete structures according to embodiments of this utility model has the advantages of being less affected by the environment and being easy to install. This application has the following advantages: high image acquisition quality under different environments such as high temperature, humidity, and dryness; good stability of the fixed bracket for image acquisition within the borehole; and minimal impact from external environmental vibrations.

[0006] In some embodiments, the fixed bracket of the image acquisition device for detecting internal defects in concrete structures further includes a one-way inflation valve, which is arranged on the rubber tire. An air pump is connected to the one-way inflation valve through an inflation / exhaust pipe to supply air to the rubber tire. At least a portion of the inflation / exhaust pipe is located inside the connecting rod.

[0007] In some embodiments, the wheel hub includes a hollow column and multiple skeletons, the skeletons being evenly distributed along the circumferential direction of the hollow column, and the hollow column being connected to the rubber tire body through the skeletons.

[0008] In some embodiments, the mounting bracket of the image acquisition device for detecting internal defects in concrete structures further includes a pressure sensor arranged between the wheel hub and the rubber tire to detect the pressure of the rubber tire.

[0009] In some embodiments, the inflation / deflation pipeline and pressure sensor circuit are arranged inside a composite cable. One end of the composite cable is connected to the image acquisition device through a waterproof connector, and the other end of the composite cable is electrically connected to the air pump and the data receiving device.

[0010] In some embodiments, the fixed bracket of the image acquisition device for detecting internal defects in concrete structures further includes a support structure. The support structure is arranged on a sealing member away from the data receiving device. The support structure includes a support frame and a guide wheel. The first end of the support frame abuts against the inner wall of the borehole through the guide wheel. The second end of the support frame is pivotally connected to the sealing member. The two ends of the spring are respectively connected to the sealing member and the support frame.

[0011] The online inspection and numerical quantification system for internal defects in concrete structures according to an embodiment of the present invention includes an image acquisition device and a fixed bracket. The image acquisition device includes a wide-angle camera, a dual-spectrum LED light group, a temperature and humidity sensing unit, and a transparent housing. The wide-angle camera is arranged inside the transparent housing, the dual-spectrum LED light group is arranged next to the wide-angle camera, and the temperature and humidity sensing unit is arranged inside the transparent housing. The transparent housing is closed at both ends. The fixed bracket is used to fix the transparent housing of the image acquisition device and the wide-angle camera. The fixed bracket forms an interval area in the concrete borehole. The fixed bracket includes a sealing component and a connecting rod. Two sealing components are arranged at both ends of the transparent shell. One end of the connecting rod is connected to the sealing component, and the other end of the connecting rod is connected to the transparent shell. The wide-angle camera, dual-spectrum LED light group, and temperature and humidity sensing unit pass through the sealing component via the connecting rod and are electrically connected to the power supply unit and data processing unit. The sealing component includes a rubber tire and a hub. The rubber tire is arranged in a concrete borehole and can expand to abut against the borehole wall. The hub is located inside the rubber tire to support the rubber tire. A pressure sensor is arranged between the hub and the rubber tire to detect the pressure of the rubber tire.

[0012] In some embodiments, the dual-spectrum LED light group has visible light LEDs and infrared light LEDs, which are arranged in an alternating ring around the camera.

[0013] In some embodiments, the air filling and exhaust pipes, water pumping pipes, communication power supply lines, and pressure sensor lines are all arranged in a composite cable. One end of the composite cable is connected to the image acquisition device through a waterproof connector, and the other end of the composite cable is connected to the air pump, the data processing unit, and the power supply unit.

[0014] According to an embodiment of the present invention, the online inspection and numerical quantification system for internal defects in concrete structures includes an image acquisition device and a fixed support. The image acquisition device includes a wide-angle camera, a dual-spectrum LED light group, a temperature and humidity sensing unit, and a transparent housing. The wide-angle camera is arranged inside the transparent housing, the dual-spectrum LED light group is arranged next to the wide-angle camera, and the temperature and humidity sensing unit is arranged inside the transparent housing. The transparent housing is closed at both ends, and the fixed support is used to fix the transparent housing of the image acquisition device and the wide-angle camera. The image acquisition device has a fixed bracket forming an interval area in a concrete borehole. The fixed bracket is used to fix the transparent housing of the image acquisition device and the wide-angle camera. The fixed bracket includes multiple guide rails and buckles. The guide rails are U-shaped linear guide rails. The buckles are arranged at the ends of each section of the guide rails. The guide rails are provided with multiple equally spaced circular holes. The image acquisition device is bound and fixed to the guide rails through the circular holes. The cable is located in the U-shaped groove of the guide rails. The cable is electrically connected to the data processing unit and the power supply unit through an integrator. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the fixed support structure of the image acquisition device for detecting internal defects in concrete structures according to an embodiment of this utility model.

[0016] Figure 2 This is a schematic diagram of the hub structure of the online inspection and numerical quantification system for internal defects in concrete structures according to an embodiment of this utility model.

[0017] Reference numerals: 1. Concrete borehole; 2. Transparent shell; 3. Stainless steel cavity; 4. Connecting rod; 5. Composite cable; 6. Wide-angle camera; 7. Dual-spectrum LED light assembly; 8. Waterproof connector; 9. Rubber tire; 10. Pumping pipe; 11. Guide wheel; 12. Support frame; 13. Hole fixing device; 14. Hub; 15. Frame; 201. Inflation and exhaust pipe; 202. Pumping pipe; 203. Communication and power supply line; 204. Pressure sensor line; 205. Pressure sensor; 206. One-way inflation valve. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] According to the embodiment of the present invention, the fixed support of the image acquisition device for detecting internal defects in concrete structures includes a sealing component and a connecting rod 4. Two sealing components are arranged at both ends of the image acquisition device. One end of the connecting rod 4 is connected to the sealing component. The sealing component includes a rubber body 9 and a hub 14. The rubber body 9 is arranged in the concrete borehole 1 and can expand to abut against the borehole wall of the concrete borehole 1. The hub 14 is located inside the rubber body 9 to support the rubber body 9. One end of the connecting rod 4 is connected to the hub 14, and the other end of the connecting rod 4 is connected to the image acquisition device. The cable of the image acquisition device passes through the sealing component via the connecting rod 4 to be electrically connected to the data receiving device for signal transmission.

[0020] The fixed bracket is used to stably fix the image acquisition device in the concrete borehole 1, ensuring its accurate position and orientation during the detection process, and can adapt to boreholes with different horizontal and inclined angles in the concrete. Sealing components are arranged at both ends of the transparent housing 2 to seal the openings of the transparent housing 2, preventing impurities from entering, and providing connection points for the connecting rod 4. The connecting rod 4 not only fixes the transparent housing 2 and the wide-angle camera 6, but also serves as a cable channel, electrically connecting the image acquisition device and the data receiving device. The two ends of the connecting rod 4 are connected to the two sealing components, which can limit the sealing components to a certain extent, ensuring the space between the two sealing components.

[0021] The rubber body 9 is annular in shape and is arranged in the concrete borehole 1. It possesses good elasticity and sealing properties, allowing it to fit tightly against the inner wall of the borehole. Static friction between the rubber body 9 and the borehole wall prevents the image acquisition device from moving. The rubber body 9 can be easily inserted into the borehole when it is not expanded. When it is necessary to fix the image acquisition device, the rubber body 9 expands, causing its outer surface to fit tightly against the inner wall of the borehole, thus achieving sealing and fixation. The hub 14 is located inside the rubber body 9, supporting it and providing structural strength. It also serves as the connection point for the connecting rod 4, ensuring a stable connection between the connecting rod 4 and the sealing element. The sealing element has a small diameter when not expanded, facilitating insertion. After entering the predetermined position, it causes the rubber body 9 to expand, causing its tread to fit tightly against the inner wall of the borehole. The hub 14 acts as a support point, ensuring the rubber body 9 remains stable during expansion while providing sufficient support force. The elastic design of the rubber body 9 allows it to adapt to boreholes of different diameters, exhibiting good versatility and flexibility. The expanded rubber body 9 fits tightly against the inner wall of the borehole, providing a reliable seal and protecting internal components from the influence of the external environment.

[0022] Optionally, the tread of the rubber tire 9 adjacent to the inner wall of the borehole is patterned. The pattern increases friction. When the rubber tire 9 expands and fits tightly against the inner wall of the borehole, the pattern can better embed itself into the minute unevenness of the borehole wall, thus providing stronger grip. Increased friction significantly improves the stability of the sealing component, ensuring the image acquisition device remains fixed during detection, thereby improving the accuracy and reliability of image acquisition. Furthermore, the width of the tread where the rubber tire 9 interacts with the inner wall of the borehole can be increased. A wider tread means a larger contact area, providing even stronger grip and further increasing friction.

[0023] The online inspection and numerical quantification system for internal defects of concrete structures according to embodiments of this utility model has the advantages of real-time online inspection of borehole inner wall defects with minimal environmental influence and high inspection efficiency. This application has the following advantages: high image acquisition quality under different environments such as high temperature, humidity, and dryness; good stability of the fixed bracket for image acquisition within the borehole; minimal impact from external environmental vibrations; and the image acquisition device enables real-time online inspection of borehole inner wall defects with high efficiency and timely feedback.

[0024] In some embodiments, the fixed bracket of the image acquisition device for detecting internal defects in concrete structures further includes a one-way inflation valve. The one-way inflation valve is arranged on the rubber tire 9. An air pump is connected to the one-way inflation valve through an inflation / exhaust pipe 201 to supply air to the rubber tire 9. At least part of the inflation / exhaust pipe 201 is located inside the connecting rod 4.

[0025] Specifically, a one-way inflation valve is installed on the rubber tire body 9 to control the unidirectional flow of gas. It allows gas to enter the rubber tire body 9 from the outside but prevents gas from leaking from the inside of the rubber tire body 9 to the outside. When the air pump supplies air to the rubber tire body 9 through the inflation / deflation line 201, the one-way inflation valve opens, allowing gas to enter and inflate the rubber tire body 9. Once the gas is inside the rubber tire body 9, the one-way inflation valve closes to prevent gas leakage, thus maintaining the inflated state of the rubber tire body 9. The one-way inflation valve ensures that the rubber tire body 9 can expand quickly and stably while preventing gas leakage, avoiding problems such as loosening or sealing failure of the rubber tire body 9 due to gas leakage. Integrating the inflation / deflation line 201 into the connecting rod 4 not only saves space but also improves the overall integrity and stability of the system. This design reduces interference from the external environment on the pipeline, ensuring smooth inflation and deflation processes.

[0026] In some embodiments, the hub 14 includes a hollow column and multiple skeletons 15, the skeletons 15 being evenly distributed along the circumferential direction of the hollow column, and the hollow column being connected to the rubber tire 9 through the skeletons 15.

[0027] Specifically, the hollow columnar structure reduces the overall weight of the wheel hub 14 and provides sufficient structural strength. Serving as a connection point for multiple frames 15, it provides structural support for the entire wheel hub 14. The hollow columnar structure also allows for the installation of cables and ventilation hoses, reducing the space occupied by pipes and cables. The frames 15 are evenly distributed along the circumference of the hollow columnar structure, connecting the hollow columnar structure and the rubber tire 9, serving to support and transmit force. The design of the frames 15 enhances the overall structural strength of the wheel hub 14 while ensuring that the rubber tire 9 is evenly stressed during expansion. The perforations between the frames 15 and adjacent frames 15 facilitate heat dissipation and drainage.

[0028] In some embodiments, the fixed bracket of the image acquisition device for detecting internal defects in concrete structures further includes a pressure sensor 205, which is arranged between the wheel hub 14 and the rubber tire 9 to detect the pressure of the rubber tire 9.

[0029] Specifically, the pressure sensor 205 can be a strain gauge, which is arranged between the hub 14 and the rubber tire 9 for direct detection of pressure changes in the rubber tire 9. Pressure is measured by detecting minute deformations of the rubber tire 9. The pressure sensor 205 can monitor pressure changes inside the rubber tire 9 in real time. This allows operators to precisely control the expansion of the rubber tire 9, ensuring a tight fit with the borehole wall and preventing damage to the rubber tire 9 due to excessive pressure. When the pressure reaches a preset safety threshold, the system can automatically stop inflation to ensure operational safety.

[0030] Pressure monitoring via pressure sensor 205 ensures that the rubber tire body 9 maintains a stable seal after expansion. An abnormal drop in pressure may indicate a problem with the seal, requiring timely inspection and handling.

[0031] In some embodiments, the inflation / deflation pipeline 201 and the pressure sensor line 204 are arranged inside the composite cable 5. One end of the composite cable 5 is connected to the image acquisition device through the waterproof connector 8, and the other end of the composite cable 5 is electrically connected to the air pump and the data receiving device.

[0032] Specifically, the composite cable 5 internally protects the inflation / deflation pipe 201 and the pressure sensor circuit 204, while the composite cable 5 is externally encased in a hard armor, providing waterproofing, moisture resistance, and high-temperature resistance. The inflation / deflation pipe 201 inflates and deflates the rubber tire 9, and the water extraction pipe 202 is used to remove water seepage from the borehole, ensuring a dry testing environment, improving the accuracy and reliability of the test, and reducing the interference of moisture on image acquisition. The pressure sensor circuit 204 transmits the pressure data detected by the pressure sensor 205, monitoring pressure changes inside the rubber tire 9 in real time. The composite cable 5 integrates multiple functions, reducing wiring complexity and improving the overall system integrity and reliability.

[0033] The waterproof connector 8 ensures good sealing and reliability even in humid environments, preventing water leakage at the connection points of lines and pipes, and protecting the safety of internal circuits and pipes. Furthermore, the waterproof connector 8 allows for quick connection and disconnection of the composite cable 5, can extend the length of the composite cable 5 by arranging multiple waterproof connectors 8, and can be used to connect multiple image acquisition devices in series.

[0034] In some embodiments, the fixed bracket of the image acquisition device for detecting internal defects in concrete structures further includes a support structure. The support structure is arranged on the sealing member away from the data receiving device. The support structure includes a support frame 12 and a guide wheel 11. The first end of the support frame 12 abuts against the inner wall of the borehole through the guide wheel 11. The second end of the support frame 12 is pivotally connected to the sealing member. The two ends of the spring are respectively connected to the sealing member and the support frame 12.

[0035] Specifically, the support structure is used to guide the fixed bracket and image acquisition device to be located in the center of the borehole. The support frame 12 abuts against the inner wall of the borehole through the guide wheel 11. The guide wheel 11 can roll relative to the inner wall of the borehole, which can effectively reduce the friction with the inner wall of the borehole. During the installation and use of the device, it avoids the wear or displacement of the bracket due to large friction, and makes the contact between the support frame 12 and the inner wall of the borehole smoother and more stable.

[0036] When the image acquisition device is disturbed by external vibrations or minor deformations of the concrete structure, the spring can play a buffering role, absorbing and offsetting part of the external force, preventing the device from shaking significantly. The spring supports the guide wheel 11, and the spring pushes the guide wheel 11 to keep it in contact with the inner wall of the borehole. This close contact between the guide wheel 11 and the inner wall of the borehole is conducive to the guide wheel 11 playing a guiding role and automatically adjusting the angle according to the actual shape of the inner wall of the borehole.

[0037] According to the embodiment of the present invention, the online inspection and numerical quantification system for internal defects of concrete structures includes an image acquisition device and a fixed bracket. The image acquisition device includes a wide-angle camera 6, a dual-spectrum LED light group 7, a temperature and humidity sensing unit, and a transparent shell 2. The wide-angle camera 6 is arranged inside the transparent shell 2, the dual-spectrum LED light group 7 is arranged next to the wide-angle camera 6, and the temperature and humidity sensing unit is arranged inside the transparent shell 2. The transparent shell 2 is closed at both ends. The fixed bracket is used to fix the transparent shell 2 and the wide-angle camera 6 of the image acquisition device. The fixed bracket forms an interval area in the concrete borehole 1. The fixed bracket includes a sealing component and a connecting rod 4. Two sealing components are arranged at both ends of the transparent shell 2. One end of the connecting rod 4 is connected to the sealing component, and the other end of the connecting rod 4 is connected to the transparent shell 2. The wide-angle camera 6, the dual-spectrum LED light group 7, and the temperature and humidity sensing unit pass through the sealing component via the connecting rod 4 and are electrically connected to the power supply unit and the data processing unit. The sealing component includes a rubber tire body 9 and a hub 14. The rubber tire body 9 is arranged in the concrete borehole 1 and can expand to abut against the borehole wall of the concrete borehole 1. The hub 14 is located inside the rubber tire body 9 to support the rubber tire body 9. A pressure sensor 205 is arranged between the hub 14 and the rubber tire body 9 to detect the pressure of the rubber tire body 9.

[0038] A wide-angle camera 6 is positioned directly facing the concrete defect to capture images. Its wide-angle lens provides a large field of view, enabling the acquisition of more comprehensive image information within a limited space, facilitating subsequent image processing and analysis. A dual-spectrum LED light group 7 is positioned next to the wide-angle camera 6 to provide illumination. Through dual-spectrum illumination, the system can simultaneously acquire images under two spectra, thus more comprehensively identifying defects and improving the flexibility and accuracy of image acquisition. A temperature and humidity sensing unit is located inside the transparent housing 2 to monitor the temperature and humidity environment inside the borehole in real time. Monitoring environmental parameters helps analyze the causes and trends of defects. For example, high humidity may cause water seepage inside the concrete, leading to cracks or holes. By monitoring temperature and humidity, the development direction of defects can be better predicted. The transparent housing 2 protects the wide-angle camera 6, the dual-spectrum LED light group 7, and the temperature and humidity sensing unit from damage caused by dust, moisture, and other impurities. The transparent housing 2 is made of high-strength, high-transparency material, ensuring that light can pass through smoothly while protecting internal components from external environmental influences. The transparent housing 2 not only protects critical components but also ensures the quality of image acquisition. Its closed structure at both ends can prevent impurities from entering, extend the service life of the equipment, and prevent dust and moisture in the borehole from affecting the operation of the equipment.

[0039] A fixed bracket is used to stably fix the image acquisition device in the concrete borehole 1, ensuring its accurate position and orientation during the inspection process. It can adapt to boreholes with different horizontal and inclined angles within the concrete. Sealing components are arranged at both ends of the transparent housing 2 to seal the openings, preventing impurities from entering, and providing connection points for the connecting rod 4. The connecting rod 4 not only fixes the transparent housing 2 and the wide-angle camera 6, but also serves as a cable channel, electrically connecting the wide-angle camera 6, the dual-spectrum LED light group 7, and the temperature and humidity sensing unit to the power supply unit and the data processing unit. The two ends of the connecting rod 4 are connected to the two sealing components, which can limit the movement of the sealing components and ensure the space between them. The power supply unit provides a stable power supply to the image acquisition device, ensuring the normal operation of the wide-angle camera 6, the dual-spectrum LED light group 7, and the temperature and humidity sensing unit. The data processing unit receives image and environmental parameter data transmitted by the image acquisition device, processes and analyzes it. It can identify and quantify defects according to a preset algorithm and generate corresponding reports.

[0040] In some embodiments, stainless steel cavities 3 can be provided at both ends of the transparent housing 2. The stainless steel cavities 3 facilitate cooperation with the sealing components, allowing the transparent housing 2 to facilitate image acquisition while protecting the wide-angle camera 6. The stainless steel cavities 3 protect both ends of the transparent housing 2, improving the structural strength of the transparent housing 2.

[0041] In some embodiments, a water-drawing pipe 10 is installed on a plug extending into one end of the borehole in the axial direction. The water-drawing pipe 10 is used to draw water from the borehole, and the other end of the water-drawing pipe 10 enters the connecting rod 4. The guide wheel 11 and the support frame 12 guide the image acquisition device to move inside the borehole and protect and limit the water-drawing pipe 10 to prevent it from colliding with the inner wall of the borehole. A borehole fixing device 13 is arranged at the opening of the borehole. The borehole fixing device 13 can be made of a perforated plate. The perforation allows pipes and cables to exit the borehole, and the perforated plate covering the borehole opening can prevent external debris from falling into the borehole and protect the equipment inside the borehole.

[0042] In some embodiments, the dual-spectrum LED light group 7 has visible light LEDs and infrared light LEDs, which are arranged in an alternating ring around the camera.

[0043] Specifically, visible light LEDs and infrared LEDs are arranged in a staggered ring around the wide-angle camera 6. This staggered arrangement ensures uniform and comprehensive illumination. The light emitted by the visible light LEDs illuminates the inner wall of the borehole, allowing the wide-angle camera 6 to clearly capture details of the concrete surface, including visible defects such as cracks, holes, and textures. The infrared light emitted by the infrared LEDs is primarily used to detect water seepage within the concrete. Infrared light is sensitive to temperature changes and can detect temperature differences in seepage areas using thermal imaging principles.

[0044] By arranging the visible light LEDs in a ring, a uniform illumination effect is achieved, preventing image quality degradation caused by insufficient or excessive local illumination. Uniform illumination helps improve image contrast and clarity, thus enabling more accurate defect identification. Both light spectra can be applied to the same area simultaneously. This arrangement facilitates the acquisition of dual-spectrum images during the same image acquisition process, improving detection efficiency. Furthermore, the staggered ring arrangement of the LED groups allows the dual-spectrum LED group 7 to achieve efficient illumination within a limited space, without occupying excessive space. This makes it suitable for use in narrow drilling environments, reducing the size of the image acquisition device and making image acquisition more flexible.

[0045] In some embodiments, the inflation / exhaust pipe 201, the water pumping pipe 202, the communication power supply line 203, and the pressure sensor line 204 are all arranged inside the composite cable 5. One end of the composite cable 5 is connected to the image acquisition device through a waterproof connector 8, and the other end of the composite cable 5 is connected to the air pump, the data processing unit, and the power supply unit.

[0046] Specifically, the composite cable 5 internally protects the inflation / deflation pipe 201, the water pumping pipe 202, the communication and power supply line 203, and the pressure sensor line 204. The composite cable 5 is externally encased in a hard armor, providing waterproofing, moisture resistance, and high-temperature resistance. The inflation / deflation pipe 201 inflates and deflates the rubber tire 9, while the water pumping pipe 202 removes water seepage from the borehole, ensuring a dry testing environment, improving accuracy and reliability, and reducing moisture interference with image acquisition. The water pumping pipe 10 is connected to the water pumping pipe 202, which is equipped with a water pump. The communication and power supply line 203 provides power to the wide-angle camera 6, dual-spectrum LED light group 7, and temperature and humidity sensing unit of the image acquisition device, and transmits image data and environmental parameter data to the data processing unit. The pressure sensor line 204 transmits pressure data detected by the pressure sensor 205, monitoring pressure changes inside the rubber tire 9 in real time. The composite cable 5 integrates multiple functions, reducing wiring complexity and improving the overall system integrity and reliability.

[0047] The waterproof connector 8 ensures good sealing and reliability even in humid environments, preventing water leakage at the connection points of lines and pipes, and protecting the safety of internal circuits and pipes. Furthermore, the waterproof connector 8 allows for quick connection and disconnection of the composite cable 5, can extend the length of the composite cable 5 by arranging multiple waterproof connectors 8, and can be used to connect multiple image acquisition devices in series.

[0048] According to the embodiment of the present invention, the online inspection and numerical quantification system for internal defects of concrete structures includes an image acquisition device and a fixing bracket. The image acquisition device includes a wide-angle camera 6, a dual-spectrum LED light group 7, a temperature and humidity sensing unit, and a transparent shell 2. The wide-angle camera 6 is arranged inside the transparent shell 2, the dual-spectrum LED light group 7 is arranged next to the wide-angle camera 6, and the temperature and humidity sensing unit is arranged inside the transparent shell 2. The transparent shell 2 is closed at both ends. The fixing bracket is used to fix the transparent shell 2 and the wide-angle camera 6 of the image acquisition device. The fixing bracket forms an interval area in the concrete borehole 1. The fixing bracket includes multiple sections of guide rails and buckles. The guide rails are U-shaped linear guide rails. Buckles are arranged at the ends of each section of guide rails. Multiple equally spaced circular holes are provided on the guide rails. The image acquisition device is fixed to the guide rails through the circular holes. The cable is located in the U-shaped groove of the guide rails. The cable is electrically connected to the data processing unit and the power supply unit through an integrator.

[0049] In this embodiment, a mechanical fixing bracket is used. The guide rail can be a stainless steel U-shaped linear guide rail, arranged in an inverted U-shape and segmented. The segments are fastened together with bolts, and each segment has a spring clip at its end. The angle between the clip and the guide rail is less than 90°. Circular holes are evenly spaced along the middle of the guide rail, through which the image acquisition device is secured. The U-shaped groove is used for cable laying. The clips connecting multiple guide rail segments ensure the overall stability of the bracket. The clips facilitate quick and easy installation and disassembly, enabling rapid assembly and disassembly of the fixing bracket. The evenly spaced circular holes on the guide rail facilitate adjustment of the fixed position of the image acquisition device, adapting to image acquisition needs at different locations.

[0050] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0054] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A fixed bracket for an image acquisition device for detecting internal defects in concrete structures, characterized in that, include The image acquisition device includes two sealing components arranged at both ends. One end of the connecting rod is connected to one of the sealing components. Each sealing component comprises a rubber body and a hub. The rubber body is placed in a concrete borehole and can expand to abut against the borehole wall. The hub is located inside the rubber body to support it. One end of the connecting rod is connected to the hub, and the other end is connected to the image acquisition device. The cable of the image acquisition device passes through the connecting rod and exits the sealing component to electrically connect with a data receiving device for signal transmission.

2. The fixed bracket of the image acquisition device for detecting internal defects in concrete structures according to claim 1, characterized in that, It also includes a one-way inflation valve, which is arranged on the rubber tire body. An air pump is connected to the one-way inflation valve through an inflation / deflation pipe to supply air to the rubber tire body. At least part of the inflation / deflation pipe is located inside the connecting rod.

3. The fixed bracket of the image acquisition device for detecting internal defects in concrete structures according to claim 2, characterized in that, The wheel hub includes a hollow columnar body and multiple skeletons. The skeletons are evenly distributed along the circumferential direction of the hollow columnar body, and the hollow columnar body is connected to the rubber tire body through the skeletons.

4. The fixed bracket of the image acquisition device for detecting internal defects in concrete structures according to claim 3, characterized in that, It also includes a pressure sensor arranged between the wheel hub and the rubber tire to detect the pressure of the rubber tire.

5. The fixed bracket of the image acquisition device for detecting internal defects in concrete structures according to claim 4, characterized in that, The inflation / deflation pipeline and pressure sensor circuit are arranged inside the composite cable. One end of the composite cable is connected to the image acquisition device through a waterproof connector, and the other end of the composite cable is electrically connected to the air pump and the data receiving device.

6. The fixed bracket of the image acquisition device for detecting internal defects in concrete structures according to claim 4, characterized in that, It also includes a support structure arranged on the sealing member away from the data receiving device. The support structure includes a support frame and a guide wheel. The first end of the support frame abuts against the inner wall of the borehole through the guide wheel. The second end of the support frame is pivotally connected to the sealing member. The two ends of the spring are respectively connected to the sealing member and the support frame.

7. An online inspection and numerical quantification system for internal defects in concrete structures, characterized in that, include: An image acquisition device includes a wide-angle camera, a dual-spectrum LED light group, a temperature and humidity sensing unit, and a transparent housing. The wide-angle camera is arranged inside the transparent housing, the dual-spectrum LED light group is arranged next to the wide-angle camera, and the temperature and humidity sensing unit is arranged inside the transparent housing. The transparent housing is closed at both ends. A fixed bracket is provided for fixing the transparent housing of the image acquisition device and the wide-angle camera. The fixed bracket forms an interval area in the concrete borehole. The fixed bracket includes a sealing component and a connecting rod. Two sealing components are arranged at both ends of the transparent housing. One end of the connecting rod is connected to the sealing component, and the other end of the connecting rod is connected to the transparent housing. The wide-angle camera, dual-spectrum LED light group, and temperature and humidity sensing unit pass through the sealing component via the connecting rod and are electrically connected to the power supply unit and data processing unit. The sealing component includes a rubber body and a hub. The rubber body is arranged in the concrete borehole and can expand to abut against the borehole wall. The hub is located inside the rubber body to support the rubber body. A pressure sensor is arranged between the hub and the rubber body to detect the pressure of the rubber body.

8. The online inspection and numerical quantification system for internal defects in concrete structures according to claim 7, characterized in that, The dual-spectrum LED light group has visible light LEDs and infrared LEDs, which are arranged in an alternating ring around the camera.

9. The online inspection and numerical quantification system for internal defects in concrete structures according to claim 7, characterized in that, The air filling and exhaust pipes, water pumping pipes, communication power supply lines, and pressure sensor lines are all arranged inside the composite cable. One end of the composite cable is connected to the image acquisition device through a waterproof connector, and the other end of the composite cable is connected to the air pump, the data processing unit, and the power supply unit.

10. A system for online inspection and numerical quantification of internal defects in concrete structures, characterized in that, include An image acquisition device includes a wide-angle camera, a dual-spectrum LED light group, a temperature and humidity sensing unit, and a transparent housing. The wide-angle camera is arranged inside the transparent housing, the dual-spectrum LED light group is arranged next to the wide-angle camera, and the temperature and humidity sensing unit is arranged inside the transparent housing. The transparent housing is sealed at both ends, and a cable passes through one end of the transparent housing and is electrically connected to the wide-angle camera, the dual-spectrum LED light group, and the temperature and humidity sensing unit. A fixed bracket is provided for fixing the transparent housing of the image acquisition device and the wide-angle camera. The fixed bracket forms an interval area in the concrete borehole. The fixed bracket includes multiple guide rails and buckles. The guide rails are U-shaped linear guide rails. The buckles are arranged at the ends of each section of the guide rails. Multiple equally spaced circular holes are provided on the guide rails. The image acquisition device is bound and fixed to the guide rails through the circular holes. The cable is located in the U-shaped groove of the guide rails. The cable is electrically connected to the data processing unit and the power supply unit through an integrator.

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