Magnetic type steel structure corrosion detector
The design of the magnetic steel structure corrosion detector solves the problems of unstable fixation, single parameters, and insufficient accuracy of traditional equipment. It enables simultaneous detection of multiple parameters, improving the stability, accuracy, and convenience of the detection. It is suitable for corrosion detection of steel structures such as buildings and bridges.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG ENG CONSTRUCT JIANLI CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional steel structure corrosion detection equipment lacks a stable fixing method, has single detection parameters, insufficient accuracy, poor operation and portability, makes it difficult to acquire multi-dimensional corrosion data simultaneously, and poses safety hazards.
Design a magnetic steel structure corrosion detector that integrates a magnetic positioning component and a multi-parameter detection component, including ultrasonic corrosion depth, image corrosion area, and coating remaining thickness detection modules. Equipped with intelligent data processing and alarm functions, it achieves stable adsorption and synchronous detection of multiple parameters.
It improves the stability and safety of detection, reduces the deviation rate of detection points, enhances detection efficiency and accuracy, adapts to steel structure surfaces of different shapes, and has portability and intelligent prompting functions.
Smart Images
Figure CN224471026U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel structure inspection technology, specifically a magnetic steel structure corrosion detector, which is suitable for corrosion inspection of steel structure components such as buildings, bridges, ships, and wind turbine towers. It can simultaneously detect multiple parameters such as corrosion depth, corrosion area, and remaining coating thickness of steel structures, and belongs to the category of structural innovation and functional integration of non-destructive testing equipment. Background Technology
[0002] During the long-term use of steel structures, corrosion is a key factor affecting their safety and service life. Therefore, accurate detection of the degree of corrosion of steel structures is of utmost importance.
[0003] Currently, there are several pressing problems in the field of steel structure corrosion detection: 1. Traditional steel structure corrosion detection equipment lacks reliable fixing methods for the detection body, relying mostly on manual assistance or simple supports. For example, some detection instruments require operators to hold them throughout the entire process, and hand fatigue and shaking can easily cause the detection body to shift, resulting in a high deviation rate of detection points. Especially for steel structures with high-altitude, curved, or vertical facades, the lack of dedicated and stable fixing devices for the detection body not only affects the detection accuracy but also poses a safety hazard of the detection body falling from a height, severely restricting the efficiency and safety of the detection work; 2. Most detection equipment has relatively simple functions, only able to detect rust thickness or coating thickness, unable to simultaneously obtain key information such as rust area and rust distribution. To obtain multi-dimensional rust data, multiple detection devices need to be used in combination, resulting in low equipment integration, cumbersome operation procedures, and significantly increased detection time and labor costs. Meanwhile, some equipment has strict requirements for the flatness of the rusted surface. When the steel structure surface has uneven rust morphology such as pitting corrosion and flaking corrosion, the detection error is large, making it difficult to accurately reflect the true degree of rust and affecting the subsequent assessment of the steel structure's safety.
[0004] Therefore, it is necessary to design a magnetic steel structure corrosion detector to solve the problems mentioned above. Summary of the Invention
[0005] To address the problems of unstable fixing of the detection subject, limited and inaccurate detection parameters, poor operability and portability, and inconvenient data management in traditional steel structure corrosion detection equipment, this invention designs a magnetic steel structure corrosion detector. By incorporating a magnetic positioning component, the detection subject is stably adsorbed and fixed on the steel structure surface. It integrates multi-parameter detection components to simultaneously acquire data such as corrosion depth, area, and remaining coating thickness. Coupled with intelligent data processing and alarm functions, it meets the requirements of stability, accuracy, convenience, and intelligence in steel structure corrosion detection.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] This magnetic steel structure corrosion detector mainly consists of the detector body, magnetic positioning components, and multi-parameter detection components. The components work together to achieve efficient and accurate detection of steel structure corrosion.
[0008] Furthermore, the detector itself, serving as the core carrier and control unit of the equipment, integrates data processing, display, and operation functions. Its surface features a touchscreen display for showing test data and the operating interface; it also has adjustment buttons for convenient parameter setting. Handles are installed on both sides of the detector for easy operation. Internally, it houses a control motherboard and a data processing module. The control motherboard is electrically connected to the touchscreen display, adjustment buttons, and multi-parameter detection components, coordinating the operation of each component. The data processing module analyzes and processes the data collected by the multi-parameter detection components to generate corrosion detection results. Additionally, the detector itself is equipped with an alarm, electrically connected to the control motherboard. When the detected corrosion level exceeds a preset threshold, the alarm will emit an audible and visual alarm to promptly alert relevant personnel.
[0009] Furthermore, the magnetic positioning assembly is used to adsorb and fix the detector body onto the steel structure surface. It includes a magnetic frame, shock-absorbing spring columns, locking sleeves, hinge seats, and universal adapter seats. The shock-absorbing spring columns are fixedly connected to the rear two ends of the magnetic frame by threads. The locking sleeves are locked and fixed by locking bolts and the ends of the shock-absorbing spring columns. The shock-absorbing spring columns can buffer the impact force during adsorption. The rear side of the locking sleeve away from the locking bolts is hinged by the hinge seat, allowing the upper and lower parts of the locking sleeve to rotate. A universal adapter seat is provided on the rear side of the hinge seat. The magnetic frame is engaged with the engagement groove on the rear side of the detector body through the universal adapter seat, thereby achieving multi-angle adsorption adaptation. It can adapt to different shapes of steel structure surfaces such as flat surfaces, curved surfaces, and corners, ensuring stable adsorption of the detector body.
[0010] Furthermore, the magnetic holder is a metal frame with embedded strong magnetic blocks. The strong magnetic blocks are made of neodymium iron boron material, which has a strong magnetic attraction and fixing force. The outside is wrapped with a flexible anti-slip layer of silicone material, which can prevent scratches on the surface coating of the steel structure while ensuring the magnetic attraction and fixing force.
[0011] Furthermore, the universal adapter includes a ball head and a ball seat. The ball seat is locked inside the locking groove, and the ball head can rotate 360° inside the ball seat. The ball seat is also equipped with a knob for locking the position of the ball head, which makes it easy to adjust and fix the angle of the magnetic holder according to actual testing needs.
[0012] Furthermore, a multi-parameter detection component is used to detect parameters related to steel structure corrosion. This includes an ultrasonic corrosion depth detection module, an image-based corrosion area detection module, and a coating remaining thickness detection module. These modules are connected to the main body of the detector via connecting lines, allowing for the simultaneous acquisition of corrosion depth and area data. The ultrasonic corrosion depth detection module includes a high-frequency ultrasonic probe with a frequency of 5-10MHz and a resolution of 0.01mm, enabling precise penetration of the corrosion layer and substrate on the steel structure surface to measure corrosion depth. The image-based corrosion area detection module includes a miniature high-definition camera with 2 megapixels and a frame rate of 30fps, facilitating accurate identification of corrosion boundaries and subsequent calculation of the corrosion area. The coating remaining thickness detection module includes an electromagnetic induction probe, which can simultaneously detect the remaining coating thickness on the steel structure surface, determining the correlation between coating damage and corrosion, and providing data support for corrosion cause analysis.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This invention utilizes a magnetic steel structure corrosion detector, achieving the following effects: 1. The magnetic positioning component of this invention stably attaches the detector body to the steel structure surface. This component is adaptable to various surface shapes, including flat, curved, and corner surfaces, ensuring the detector body remains stable during inspection and preventing displacement due to operator hand tremors or the equipment's own weight. Compared to traditional manual handheld or simple support methods, this device significantly improves the stability of the detector body. Even in high-altitude or vertical environments, it ensures a firm attachment and eliminates the risk of falling, greatly enhancing inspection stability and safety, and reducing the deviation rate of inspection points. 2. The detector integrates an ultrasonic corrosion depth detection module, an image corrosion area detection module, and a coating remaining thickness detection module, simultaneously collecting multi-dimensional data such as corrosion depth, area, and remaining coating thickness. The collaborative operation of each detection module eliminates the need for multiple devices, improving equipment integration, shortening the time required for a single inspection point, and increasing inspection efficiency. Meanwhile, each detection module possesses high detection accuracy, effectively addressing the uneven rust patterns on steel structure surfaces, with detection errors controlled within a low range, providing an accurate basis for a comprehensive assessment of the degree of steel structure corrosion; 3. The main body of the detector has a compact structure, making it easy to carry, and with the magnetic positioning component, it can adapt to various scenarios such as high altitudes and narrow spaces; The main body of the detector integrates a control motherboard and a data processing module, coordinating the work of each component and analyzing and processing the collected data; In addition, when the detected degree of corrosion exceeds the preset threshold, the alarm will emit an audible and visual alarm, which can promptly remind relevant personnel to take action. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;
[0016] Figure 2 This is a three-dimensional structural diagram of the disassembled main body of the detector of this utility model;
[0017] Figure 3 This is a three-dimensional structural diagram showing the connection between the detector body and the magnetic positioning component of this utility model;
[0018] Figure 4 This is a three-dimensional structural schematic diagram of the magnetic positioning component of this utility model;
[0019] Figure 5 This is a connection block diagram of the multi-parameter detection component of this utility model.
[0020] In the diagram: 1. Detector body; 2. Magnetic positioning component; 3. Multi-parameter detection component; 4. Alarm; 11. Touch screen; 12. Adjustment button; 13. Handle; 14. Control motherboard; 15. Data processing module; 21. Magnetic frame; 22. Shock-absorbing spring column; 23. Locking sleeve; 24. Locking bolt; 25. Hinge seat; 26. Universal adapter seat; 27. Engaging groove; 31. Connecting line; 32. Connecting interface; 33. Ultrasonic corrosion depth detection module; 34. Image corrosion area detection module; 35. Coating remaining thickness detection module; 331. High-frequency ultrasonic probe; 341. Miniature high-definition camera; 351. Electromagnetic induction probe. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0022] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete. Example
[0023] Please see Figure 1 This embodiment provides a magnetic steel structure corrosion detector, which is suitable for detecting the corrosion status of steel structural components in fields such as construction, bridges, and mechanical equipment. It can achieve stable adsorption, simultaneous detection of multiple parameters, and accurate data analysis. Example
[0024] Please see Figure 1 as well as Figure 2 Based on Example 1, this embodiment further defines the detector body 1 as the core carrier and control unit of the entire device. It is made of ABS engineering plastic material, which has both lightweight and impact resistance. Its shape is designed as a cuboid structure, which is convenient for operators to hold or place on the detection platform.
[0025] A 10.1-inch touchscreen display 11 is embedded in the center of the front of the main body 1 of the detector. The touchscreen display 11 adopts IPS display technology with a resolution of 1920×1200 and supports multi-touch operation. Operators can view the detection data, corrosion images and detection result reports in real time through the touchscreen display 11. At the same time, they can also set parameters (such as corrosion threshold setting, detection mode switching, etc.) through touch operation. Below the touchscreen display 11, there are three adjustment buttons 12 arranged side by side, namely "power switch button", "data save button" and "detection mode switch button". The adjustment buttons 12 are made of silicone material, with a pressing stroke of 2mm and clear feedback. They can be used for emergency operation in case of touchscreen display 11 failure or harsh operating environment.
[0026] On the left and right outer walls of the detector body 1, grip handles 13 are fixedly installed by bolts. The grip handles 13 are arc-shaped, wrapped with rubber material, and have anti-slip texture on the surface. The grip radius is 3.5cm, which conforms to the ergonomic design. When the operator holds the grip with both hands, the weight of the equipment can be effectively distributed, avoiding hand fatigue caused by long-term testing. At the same time, the anti-slip texture can prevent the equipment from slipping in humid or oily environments.
[0027] Inside the internal cavity of the detector body 1, a control motherboard 14 and a data processing module 15 are fixedly installed by a bracket. The control motherboard 14 adopts an industrial-grade ARM architecture chip with a main frequency of 1.8GHz and has multiple interface expansion capabilities. It is electrically connected to the touch screen 11, adjustment button 12, multi-parameter detection component 3 and alarm 4 through wires. It can receive signals from each component and send control commands to coordinate the synchronous operation of each component. The data processing module 15 has a built-in dedicated data algorithm chip, which can perform real-time analysis and processing on the data such as rust depth, rust area and coating thickness collected by the multi-parameter detection component 3. For example, it can remove environmental interference signals through filtering algorithms, extract the boundary of the rust area through image recognition algorithms, and analyze the correlation between coating damage and rust through data association algorithms. Finally, it generates a test result containing test data, rust level and suggested treatment plan, and transmits the result to the touch screen 11 for display.
[0028] An alarm 4 is installed on the top outer wall of the detector body 1. The alarm 4 includes a red LED warning light and a buzzer. It is electrically connected to the control motherboard 14 through wires. When the control motherboard 14 receives the "corrosion degree exceeds the preset threshold" signal sent by the data processing module 15, it will trigger the alarm 4 to work: the red LED warning light flashes at a frequency of 1Hz, and the buzzer emits an intermittent alarm sound of 80dB to remind the operator to pay attention to the corrosion risk in the detection area. Example
[0029] Please see Figure 3 as well as Figure 4 Based on Example 1, this embodiment further defines the magnetic positioning component 2 as being used to stably adsorb and fix the detector body 1 onto the steel structure surface, thereby avoiding detection errors caused by equipment displacement during the detection process. It includes a magnetic frame 21, a shock-absorbing spring column 22, a locking sleeve 23, a locking bolt 24, a hinge seat 25, and a universal adapter seat 26.
[0030] The magnetic chuck 21 is a rectangular metal frame made of Q235 steel. Four neodymium iron boron magnets are evenly embedded inside, providing a magnetic force of 800N. This ensures stable adhesion of the equipment to vertical or inclined steel structures (inclination angle ≤ 60°) without slippage. The outer surface of the magnetic chuck 21 is covered with a 1mm thick flexible anti-slip layer made of food-grade silicone with a Shore hardness of 50A. This layer offers excellent elasticity and wear resistance, effectively preventing scratches to the coating caused by direct contact between the magnetic chuck 21 and the steel structure surface while maintaining magnetic fixation. This makes it particularly suitable for inspecting steel structures with anti-corrosion coatings.
[0031] Two shock-absorbing spring columns 22 are provided, which are respectively fixed to the rear ends of the magnetic frame 21 by threads. The shock-absorbing spring column 22 includes a metal column and a spring sleeved on the metal column. The metal column is made of stainless steel, the spring has a wire diameter of 0.2cm, an effective number of 10 turns, and an elastic coefficient of 5N / mm. When the magnetic frame 21 is attracted to the steel structure surface, the shock-absorbing spring column 22 can buffer the instantaneous impact force of the attraction through the compression deformation of the spring, so as to avoid the impact force being transmitted to the inside of the detector body 1 and causing damage to the components. At the same time, it can also adapt to the slight unevenness of the steel structure surface, ensuring that the magnetic frame 21 is tightly attached to the steel structure surface.
[0032] The locking sleeve 23 has a semi-circular structure, divided into upper and lower parts, and is made of engineering plastic. Its inner diameter matches the outer diameter of the end of the shock-absorbing spring column 22. The upper and lower parts of the locking sleeve 23 are locked and fixed to the end of the shock-absorbing spring column 22 by the locking bolt 24. The locking bolt 24 is an M6 socket head cap screw with a tightening torque of 8 N·m to ensure a firm connection. On the rear side of the locking sleeve 23 away from the locking bolt 24, a hinge seat 25 is used to achieve a hinge. The hinge seat 25 includes a pin and a bearing. The pin is made of stainless steel with a diameter of 1 cm, and the bearing is a deep groove ball bearing. This allows the upper and lower parts of the locking sleeve 23 to rotate 0-90° around the hinge seat 25, which facilitates the adjustment of the angle of the magnetic positioning component 2 according to the shape of the steel structure (such as cylindrical steel structure, angle steel structure), thereby improving the adaptability of the equipment.
[0033] Universal adapter 26 is located on the rear side of hinge 25. It includes a ball head and a ball seat. The ball head is made of stainless steel with a diameter of 2cm, and the ball seat is made of engineering plastic with an inner diameter that matches the outer diameter of the ball head. The ball seat is fixedly engaged in the engagement groove 27 on the rear side of the instrument body 1 by a snap-fit. The size of the engagement groove 27 is adapted to the shape of the ball seat to ensure that the ball seat will not loosen in the engagement groove 27. The ball head can rotate freely 360° in the ball seat. At the same time, a knob for locking the position of the ball head is provided on the side wall of the ball seat. The knob is threaded and engages with the ball seat. When the knob is rotated, the end of the knob can press against the ball head and fix the ball head in the current position, thereby realizing the fixation of the instrument body 1 at different angles and meeting the detection requirements of different detection surfaces of steel structures (such as top surface, side surface, and bottom surface). Example
[0034] Please see Figure 1 as well as Figure 5 Based on Example 1, this embodiment further defines the multi-parameter detection component 3 as being used to simultaneously collect multi-dimensional parameters related to steel structure corrosion, providing data support for corrosion status assessment and cause analysis. It includes an ultrasonic corrosion depth detection module 33, an image corrosion area detection module 34, a coating remaining thickness detection module 35, a connection line 31, and a connection interface 32.
[0035] The connection interface 32 is located on one side of the outer wall of the detector body 1. It adopts a waterproof USB Type-C interface and has data transmission and power supply functions. The interface is equipped with a rubber sealing ring with an IP65 protection level, which can prevent rainwater and dust in the detection environment from entering the interface and causing short circuits. The connection line 31 is a shielded cable with 4 signal lines and 2 power lines inside. It is wrapped with a wear-resistant PVC sheath and a metal shielding mesh. The metal shielding mesh can effectively reduce the impact of external electromagnetic interference on data transmission and ensure the stability of the detection data. One end of the connection line 31 is plugged into the connection interface 32, and the other end is connected to the ultrasonic corrosion depth detection module 33, the image corrosion area detection module 34, and the coating remaining thickness detection module 35, respectively, to realize data interaction and power supply between each detection module and the detector body 1.
[0036] The ultrasonic corrosion depth detection module 33 is used to detect the depth of the corrosion layer on the surface of steel structures. It includes a high-frequency ultrasonic probe 331 and a probe housing. The probe housing is made of stainless steel, with a length of 8cm and a diameter of 3cm. The surface is textured with anti-slip texture for easy hand positioning by the operator. The high-frequency ultrasonic probe 331 is embedded in the front end of the probe housing. It uses a piezoelectric ceramic wafer and operates at a frequency of 5-10MHz. The frequency can be adjusted according to the detection requirements via the touch screen 11 (e.g., 10MHz for detecting thin corrosion layers and 5MHz for detecting thick corrosion layers). The high-frequency ultrasonic probe 331 has a resolution of 0.01mm and can accurately emit high-frequency ultrasonic signals. After the ultrasonic signal penetrates the corrosion layer on the surface of the steel structure, it will be reflected at the interface between the corrosion layer and the steel structure substrate. The reflected signal is received by the high-frequency ultrasonic probe 331 and transmitted to the data processing module 15 of the detector body 1 through the connection line 31. The data processing module 15 calculates the thickness of the corrosion layer, i.e., the corrosion depth, based on the propagation speed and propagation time of the ultrasonic wave. The detection error is ≤0.02mm, which can meet the requirements of high-precision corrosion depth detection.
[0037] The image rust area detection module 34 is used to identify rusted areas on the surface of steel structures and calculate the rust area. It includes a miniature high-definition camera 341, a supplementary light, and a camera housing. The camera housing is made of plastic. The supplementary light consists of four LED beads arranged around the miniature high-definition camera 341. Each LED bead has a power of 0.5W, and its brightness can be adjusted via the control motherboard 14. In dimly lit detection environments (such as basements or equipment interiors), the supplementary light provides sufficient illumination to ensure clear images. The miniature high-definition camera 341 is embedded in the front end of the camera housing and uses a CMO (Content Management System). The S image sensor has 2 million pixels, a maximum resolution of 1920×1080, and a frame rate of 30fps. It can capture images of the steel structure surface in real time. The image signal is transmitted to the data processing module 15 through the connection line 31. The data processing module 15 uses a deep learning-based image recognition algorithm to automatically identify the rusted areas in the image (distinguishing between rusted areas and normal areas through color and texture features), extract the boundaries of the rusted areas, and calculate the actual rusted area based on the pixel ratio of the image. The area calculation error is ≤5%, which can accurately reflect the rust range of the steel structure surface.
[0038] The remaining coating thickness detection module 35 is used to detect the remaining thickness of the anti-corrosion coating on the steel structure surface and analyze the correlation between coating damage and corrosion. It includes an electromagnetic induction probe 351 and a probe housing. The probe housing is made of plastic and its size is consistent with the probe housing of the ultrasonic corrosion depth detection module 33, facilitating uniform handling by operators. The electromagnetic induction probe 351 uses the principle of electromagnetic induction and has a built-in excitation coil and detection coil. When the electromagnetic induction probe 351 is close to the coating on the steel structure surface, the excitation coil generates an alternating magnetic field. This magnetic field induces eddy currents in the steel structure substrate. The magnetic field generated by the eddy currents then acts on the detection coil, causing a change in the inductance of the detection coil. The change in quantity is linearly related to the coating thickness. After the electromagnetic induction probe 351 converts the change in inductance signal into an electrical signal, it is transmitted to the data processing module 15 through the connection line 31. The data processing module 15 calculates the remaining coating thickness according to the preset calibration curve. The detection range is 0-5mm, and the detection error is ≤0.05mm. At the same time, the data processing module 15 will perform correlation analysis with the remaining coating thickness data and the corrosion depth and corrosion area data. For example, if the remaining coating thickness in a certain area is <0.5mm, and there is a corrosion depth >0.1mm in the same area, it is determined that the corrosion in the area is caused by coating damage, providing data support for the corrosion cause analysis.
[0039] The working process of this utility model is as follows: When using the magnetic steel structure corrosion detector, the operator first checks the appearance of the detector body 1 and the connection status of each component, confirming that the touch screen 11, adjustment button 12, and alarm 4 are functioning normally, and that the connection line 31 and connection interface 32 of the multi-parameter detection component 3 are firmly plugged in and out; then, the operator enters the parameter setting interface through the touch screen 11, presets the corrosion threshold (such as triggering an alarm when the corrosion depth is >0.1mm or the corrosion area is >5cm²) and detection mode (such as "rapid detection" or "precise detection") according to the detection requirements. If the equipment has been used for more than 6 months or the detection module has been replaced, the operator clicks the "one-click calibration" button to start the automatic calibration program. The ultrasonic corrosion depth detection module 33 detects the standard thickness test block, the image corrosion area detection module 34 identifies the standard corrosion area sample, and the coating remaining thickness detection module 35 detects the standard coating thickness test block. The data processing module 15 automatically corrects the parameters to ensure the accuracy of the equipment.
[0040] According to the shape of the steel structure to be tested (such as cylindrical or angle steel structure), adjust the rotation angle (0-90°) of the upper and lower parts of the locking sleeve 23 through the hinge seat 25, and then adjust the matching angle between the instrument body 1 and the steel structure surface by rotating the ball head of the universal adapter 26 360° in the ball seat. After the adjustment is completed, tighten the knob on the side wall of the ball seat to lock the position.
[0041] During the inspection, the operator holds the handles 13 on both sides of the main body 1 of the inspection instrument with both hands, aligns the magnetic suction frame 21 with the area of the steel structure to be inspected and brings it close. The neodymium iron boron strong magnets in the magnetic suction frame 21 generate magnetic attraction force, which stably attracts the equipment to the surface of the steel structure. During the adsorption process, the shock-absorbing spring column 22 buffers the impact force through spring compression deformation to avoid damage to the components. At the same time, it adapts to the small unevenness of the steel structure surface ≤3mm, ensuring that the magnetic suction frame 21 fits tightly.
[0042] Activate the "Detection Mode Switch" button in adjustment button 12, select the preset detection mode, and the multi-parameter detection component 3 will begin synchronously collecting data:
[0043] Ultrasonic corrosion depth detection: The high-frequency ultrasonic probe 331 (frequency 5-10MHz) of the ultrasonic corrosion depth detection module 33 emits ultrasonic waves, which penetrate the corrosion layer and are reflected at the substrate interface. The reflected signal is transmitted to the data processing module 15 via the connection line 31 to calculate the corrosion depth.
[0044] Rust area detection: The miniature high-definition camera 341 (2 megapixels, 30fps) of the image rust area detection module 34 captures the rust area, and the image signal is transmitted to the data processing module 15, which uses a deep learning algorithm to identify the rust boundary and calculate the area.
[0045] Coating thickness detection: The electromagnetic induction probe 351 of the coating remaining thickness detection module 35 generates an alternating magnetic field, senses changes in eddy currents, and transmits the signal to the data processing module 15, which calculates the remaining coating thickness based on the calibration curve.
[0046] The detection data is transmitted to the touch screen 11 in real time. The control motherboard 14 compares the data with the preset threshold in real time. If the degree of corrosion exceeds the threshold, the alarm 4 is triggered immediately. The red LED warning light flashes at a frequency of 1Hz, and the buzzer emits an 80dB intermittent alarm sound to remind the operator to pay attention to the risk.
[0047] After the test is completed, press the "Data Save" button in the adjustment button 12. The data processing module 15 will store the test data, rust level, cause analysis (such as rust caused by coating damage) and suggested treatment plan.
[0048] If other areas need to be tested, the operator should gently push the main body 1 of the detector, adjust the position of the magnetic holder 21, and re-attach it, repeating the above testing steps; after all tests are completed, hold the handle 13 to apply external force, overcome the magnetic attraction, remove the device, and turn off the power switch.
[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A magnetic steel structure corrosion detector, characterized in that, include: The detector body (1): As the core carrier and control unit of the equipment, it integrates data processing, display and operation functions. The surface is equipped with a touch screen (11) and adjustment buttons (12), and the left and right sides are equipped with handles (13). Magnetic positioning assembly (2): used to adsorb and fix the detector body (1) to the steel structure surface, including magnetic frame (21), shock-absorbing spring column (22) and locking sleeve (23). The shock-absorbing spring column (22) is fixedly connected to the rear two ends of the magnetic frame (21) by thread. The locking sleeve (23) is locked and fixed by locking bolt (24) and the end of shock-absorbing spring column (22). The shock-absorbing spring column (22) buffers the impact force during adsorption. The rear side of the locking sleeve (23) away from the locking bolt (24) is hinged by hinge seat (25). A universal adapter (26) is also provided on the rear side of the hinge seat (25), and the magnetic suction frame (21) is engaged with the engagement groove (27) located on the rear side of the detector body (1) through the universal adapter (26); Multi-parameter detection component (3): used to detect parameters related to steel structure corrosion, including ultrasonic corrosion depth detection module (33), image corrosion area detection module (34) and coating remaining thickness detection module (35), which are connected to the connection interface (32) on one side of the detector body (1) via connection line (31).
2. The magnetic steel structure corrosion detector according to claim 1, characterized in that: The magnetic holder (21) is a metal frame with a strong magnetic block embedded inside. The strong magnetic block is made of neodymium iron boron and is wrapped with a flexible anti-slip layer on the outside. The flexible anti-slip layer is made of silicone.
3. The magnetic steel structure corrosion detector according to claim 1, characterized in that: The universal adapter (26) includes a ball head and a ball seat, wherein the ball seat is engaged in the engagement groove (27), the ball head rotates 360° in the ball seat, and the ball seat is also provided with a knob for locking the position of the ball head.
4. The magnetic steel structure corrosion detector according to claim 1, characterized in that: The ultrasonic corrosion depth detection module (33) includes a high-frequency ultrasonic probe (331), which has a frequency of 5-10MHz and a resolution of 0.01mm.
5. The magnetic steel structure corrosion detector according to claim 1, characterized in that: The image corrosion area detection module (34) includes a miniature high-definition camera (341), which has 2 million pixels and a frame rate of 30fps.
6. The magnetic steel structure corrosion detector according to claim 1, characterized in that: The coating remaining thickness detection module (35) includes an electromagnetic induction probe (351) to simultaneously detect the remaining thickness of the coating on the steel structure surface, determine the correlation between coating damage and corrosion, and provide data support for corrosion cause analysis.
7. The magnetic steel structure corrosion detector according to claim 1, characterized in that: The detector body (1) is also equipped with a control motherboard (14) and a data processing module (15). The control motherboard (14) is electrically connected to the touch screen (11), adjustment button (12), and multi-parameter detection component (3) to coordinate the work of each component. The data processing module (15) analyzes and processes the data collected by the multi-parameter detection component (3) to generate corrosion detection results.
8. A magnetic steel structure corrosion detector according to claim 1, characterized in that: The detector body (1) is also equipped with an alarm (4), which is electrically connected to the control motherboard (14).