A bulletproof plate bending degree detection device based on internet of things technology and a method thereof

Abstract

The present application relates to the field of bulletproof plate intelligent detection equipment, especially to a bulletproof plate bending degree detection equipment and method based on Internet of Things technology, which comprises a base, two groups of mobile feeding parts and a bending degree detection part; the mobile feeding part comprises multiple groups of mobile feeding assemblies; the bending degree detection part comprises multiple groups of bending degree detection assemblies; the bending degree detection assemblies and the mobile feeding assemblies on both sides are one-to-one corresponding and matched; the mobile feeding assemblies fix the bulletproof plate from both ends and drive it to move; the bending degree detection assembly is provided with an upper and lower bending degree detection end, and the intelligent sensors on the bending degree detection end synchronously collect the bending degree data of the upper and lower end faces; meanwhile, the intelligent sensor network is deployed on the upper part of the bending degree detection assembly, and a complete Internet of Things detection ecological system is constructed. The present application integrates clamping, cleaning and detection in one, has high automation degree, reduces manual intervention, ensures the stability of the detection result, and reduces the operation strength.

Description

Technical Field

[0001] This invention relates to the field of intelligent testing equipment for bulletproof plates, and more particularly to a device and method for testing the curvature of bulletproof plates based on Internet of Things (IoT) technology. Background Technology

[0002] Bending testing of silicon carbide bulletproof plates is a crucial performance and quality inspection related to life safety. The core reason is that bending directly determines the protective effectiveness, reliability, and lifespan of the plate. First, it ensures a tight fit between the plate and the body or armor base, preventing brittle fracture due to a "support effect" caused by gaps upon impact, and allowing for even distribution of impact force. Second, it guarantees the integrity of the composite armor system composed of the hard ceramic plate and the soft substrate, preventing weak points caused by bending or warping. Simultaneously, a flat plate optimizes stress wave propagation, improving resistance to multiple impacts, while internal bending stress interferes with stress distribution, inducing premature crack propagation and significantly reducing protective performance. Finally, this test is a key step in strict production process control, effectively detecting defects such as sintering deformation or poor bonding, ensuring that every product meets the highest quality standards, thus reliably protecting the wearer's safety in critical moments.

[0003] Chinese patent document CN118089636B discloses an aluminum plate bending detection device, including a worktable. The lower end of the worktable is fixedly connected to four corners with feet. Two first fixing blocks are symmetrically fixed to one side of the worktable, and a rubber roller is rotatably connected between the two first fixing blocks. The rubber roller is provided with an anti-slip toothed strip. A first electric push rod is slidably connected to one side of the worktable. An industrial camera is fixedly connected to the first electric push rod through its output end. A groove is provided at one end of the worktable, and a detection component is provided above the worktable.

[0004] The aforementioned bending test equipment uses a single-sided, single-point testing method, which can only test a small number of plates at a time. This not only results in a limited testing stroke and range, but also necessitates manual adjustment and fixation of the plate during testing due to uneven stress. These factors lead to large bending test errors and low efficiency, making it unsuitable for quality testing of high-requirement products like bulletproof plates. Furthermore, because it can only acquire point bending data from bulletproof plates, this discrete, low-dimensional data cannot accurately reflect the overall three-dimensional morphology and stress distribution of the plate, lacking the data foundation for in-depth analysis and predictive maintenance. Summary of the Invention

[0005] To address the problems existing in the background technology, a ballistic plate bending detection device and method based on Internet of Things technology are proposed. The device integrates clamping, cleaning and detection, has a high degree of automation, reduces manual intervention, ensures the stability of the detection results, and reduces the intensity of operation. It is very suitable for quality inspection scenarios of high-requirement products such as ballistic plates.

[0006] This invention proposes a ballistic plate bending detection device based on Internet of Things (IoT) technology, comprising a base, two sets of movable feeding sections movably disposed on both sides of the base, and a bending detection section moving between the two sets of movable feeding sections. Each movable feeding section includes a first movable frame that cooperates with the base and multiple sets of movable feeding components arranged along the length of the first movable frame. The bending detection section includes a second movable frame that cooperates with the first movable frame and multiple sets of bending detection components arranged along the length of the second movable frame. The first and second movable frames move in the same direction. The bending detection components and the movable feeding components on both sides are correspondingly matched. The movable feeding components fix the ballistic plate from both ends and drive it to move. The bending detection components are equipped with one upper and one lower bending detection end, which moves synchronously along the upper and lower end faces of the ballistic plate in an S-shaped trajectory. The intelligent sensors on the bending detection ends synchronously collect the bending data of the upper and lower end faces.

[0007] Preferably, the base is provided with multiple parallel electric tracks; both the first and second movable frames move in a straight line along the base by cooperating with the first electric tracks.

[0008] Preferably, the curvature detection component includes a mounting frame located on the movable frame 2; two sets of curvature detection rollers are arranged one above the other on the mounting frame, and can move horizontally back and forth and left and right while the distance between them is adjustable, and the opposite ends of the two sets of curvature detection rollers are the curvature detection ends; multiple sets of independent curvature detection elements are provided on the curvature detection ends.

[0009] Preferably, the mounting frame has a through groove in the middle and guide grooves on both sides that connect to the through groove; two sets of rotary drive heads are set in the through groove to move up and down, driving the corresponding lead screws to rotate, and lifting blocks are set on both sides of the two sets of rotary drive heads; four sets of lifting blocks pass through the guide grooves and move up and down along the guide grooves; two sets of lead screws are threadedly connected to sliding sleeves; the sliding sleeves pass through the bending detection roller.

[0010] Preferably, the bending detection roller has a row of detection holes on its bending detection end; the bending detection component includes a detection head that slides up and down through the opening of the detection hole; a ball bearing is provided on the contact end of the detection head with the bulletproof plate, and a smart sensor is provided on the other end; a reset spring is provided between the detection head and the wall of the detection hole.

[0011] Preferably, the bending degree detection roller is provided with multiple sets of mounting grooves; the openings of the multiple sets of mounting grooves are respectively opened to both sides, and a rotating frame is provided in the mounting groove; a connecting rod is provided on the rotating frame; the connecting rod extends out of the mounting groove through the opening and connects to the cleaning scraper; the cleaning scraper is inclinedly arranged on both sides of the bending degree detection roller.

[0012] Preferably, the moving feeding assembly includes a feeding plate located on a moving frame; the feeding plate is provided with a feeding port, electric rails located on the left and right sides of the feeding port, and positioning components located on the upper and lower sides of the feeding port; the positioning components include positioning frames that move up and down in cooperation with the electric rails; positioning rollers are provided on the positioning ends of the positioning frames.

[0013] Preferably, a row of jet nozzles is provided on the positioning frame; the jet nozzles are supplied with air through an external air pump and spray air onto the surface of the bulletproof plate.

[0014] Preferably, an adjusting component is provided between the two sets of positioning components, one above the other; an electric track three is provided on the feed inlet, arranged along its length; the adjusting component includes an adjusting block that moves horizontally along the electric track three; a telescopic adjusting rod is provided on the adjusting block; the adjusting rod is perpendicular to the positioning roller.

[0015] This invention proposes a method for detecting the curvature of bulletproof plates based on Internet of Things (IoT) technology. The method utilizes the aforementioned IoT-based bulletproof plate curvature detection equipment and is as follows:

[0016] S1. The spacing between the two sets of movable frames is adjusted in advance to match the size of the bulletproof plate;

[0017] S2. The staff put the bulletproof plates one by one through the feed port; the bulletproof plates pass between two sets of bending detection rollers; the positioning rollers at both ends move up and down until they clamp the two edges of the bulletproof plates.

[0018] S3. Move the adjusting rod from both sides of the bulletproof plate until it fits the left and right sides of the bulletproof plate, and adjust its position so that the bulletproof plate to be tested is in the correct position.

[0019] S4. The lifting block drives the rotating drive head to move up and down, and the bending detection roller moves up and down synchronously until the spacing matches the thickness of the bulletproof plate, and the detection head is attached to the upper and lower end surfaces of one end of the bulletproof plate.

[0020] S5. The bulletproof plate moves synchronously with the moving frame; the curvature detection roller moves back and forth and left and right; during the above process, the cleaning scraper rotates and the scraping head rubs against the surface of the bulletproof plate to scrape off the attached substances; the air jet nozzle emits air to clean the bulletproof plate and the debris accumulated on the cleaning scraper head.

[0021] S6. The detection head moves in an S-shape under the push of the reset spring; the ball bearings roll against the cleaned bulletproof plate surface and move up and down with the local curvature changes of the bulletproof plate; the intelligent sensor collects the position change data of the corresponding ball bearings.

[0022] S7. The control center converts the position change data into curvature change data on the S-shaped trajectory; by combining the multiple curvature data collected from multiple points with the curvature data collected simultaneously from the top and bottom, a three-dimensional curvature model of the bulletproof plate can be established to obtain the overall curvature of the bulletproof plate.

[0023] S8. After simultaneously completing the bending test on a batch of bulletproof plates, remove all the bulletproof plates and proceed with the next round of testing.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] First, the equipment achieves efficient and automated simultaneous multi-workpiece inspection, significantly improving inspection efficiency. Through two sets of adjustable-spacing moving feed sections, combined with positioning components to adjust the clamping thickness and adjusting components to adjust the clamping width, it can flexibly adapt to bulletproof plates of different sizes and achieve batch feeding and fixing. The curvature detection section uses curvature detection rollers to move forward, backward, left, and right, allowing rows of detection heads to move synchronously in an S-shaped pattern, ensuring uniform force on the bulletproof plate during inspection and comprehensive coverage of the inspection path. Second, ball bearings roll against the cleaned bulletproof plate surface, moving up and down according to local curvature changes in the plate. Intelligent sensors synchronously collect curvature change data from the upper and lower end faces via multiple routes. The intelligent sensor in this technical solution is a miniature intelligent sensing system integrating high-precision optical displacement measurement, multi-axis motion sensing, edge computing, and wireless communication. It enables rapid, accurate, and automated acquisition of three-dimensional topographic data of the entire surface of the bulletproof plate, providing unprecedented data support and reliability assurance for product quality control; the equipment's core inspection capabilities are outstanding, with high precision and comprehensive functions. By synchronously acquiring dual-sided contour information, the IoT intelligent system can construct a precise three-dimensional curvature model, thereby achieving a high-precision quantitative assessment of the overall flatness of the bulletproof plate, far exceeding the effect of traditional single-point or single-sided measurements. Finally, the equipment integrates several practical functions, significantly improving the system's reliability and ease of use. For example, the cleaning scraper, in conjunction with the air jet, removes debris from the plate surface before and during inspection, avoiding measurement errors. The positioning roller and adjustable adjustment rod work together to ensure the workpiece is in the optimal inspection position. The entire process integrates clamping, cleaning, and inspection, with a high degree of automation, reducing manual intervention, ensuring the stability of inspection results, and reducing operational intensity, making it ideal for quality inspection scenarios of high-requirement products such as bulletproof plates. Attached Figure Description

[0026] Figure 1 A structural diagram of a bulletproof plate bending detection device based on Internet of Things (view 1).

[0027] Figure 2 A structural diagram of a bulletproof plate bending detection device based on Internet of Things technology (perspective 2).

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 A structural diagram of the curvature detection component (view 1);

[0030] Figure 5 A structural diagram of the curvature detection component (viewpoint two);

[0031] Figure 6 A cross-sectional view of the curvature detection component;

[0032] Figure 7 for Figure 6 Enlarged view at point B in the middle;

[0033] Figure 8 This is a structural diagram of the moving feed assembly;

[0034] Figure 9 for Figure 7 Enlarged view at point C;

[0035] Reference numerals: 1. Base; 101. Electric track one; 2. Bending detection unit; 201. Bending detection assembly; 202. Moving frame two; 203. Mounting frame; 204. Cylinder; 205. Lifting block; 206. Rotary drive head; 207. Bending detection roller; 208. Cleaning scraper; 209. Guide rod; 210. Lead screw; 211. Sliding sleeve; 212. Rotating frame; 213. Connecting rod; 214. Mounting groove; 215. Bending detection component; 2 16. Detection hole; 217. Detection head; 218. Ball bearing; 219. Return spring; 220. Intelligent sensor; 3. Moving feed section; 301. Moving feed assembly; 302. Moving frame one; 303. Feed plate; 304. Feed inlet; 305. Electric track two; 306. Positioning component; 307. Adjusting component; 308. Positioning frame; 309. Positioning roller; 310. Air jet head; 311. Electric track three; 312. Adjusting block; 313. Adjusting rod. Detailed Implementation

[0036] Example 1, as Figures 1-3As shown, this embodiment proposes a ballistic plate bending detection device based on Internet of Things (IoT) technology, including a base 1, two sets of movable feeding parts 3 movably disposed on both sides of the base 1, and a bending detection part 2 moving between the two sets of movable feeding parts 3; the movable feeding part 3 includes a movable frame 302 cooperating with the base 1 and multiple sets of movable feeding components 301 arranged along the length direction of the movable frame 302; the bending detection part 2 includes a movable frame 202 cooperating with the base 1 and multiple sets of bending detection components 201 arranged along the length direction of the movable frame 202; the movable frame 302 and the movable frame 202 move in the same direction; the bending detection components 201 and the movable feeding components 301 on both sides are correspondingly cooperated; the movable feeding components 301 fix the ballistic plate from both ends and drive it to move; the bending detection components 201 are provided with one upper and one lower bending detection end, and by moving synchronously along the upper and lower end faces of the ballistic plate in an S-shaped trajectory, the intelligent sensor 220 on the bending detection end synchronously collects the bending data of the upper and lower end faces.

[0037] It should be further explained that multiple parallel electric tracks 101 are set on the base 1; both the first moving frame 302 and the second moving frame 202 move linearly back and forth along the base 1 by cooperating with the electric tracks 101; the movement of the two sets of moving frames 302 can control the spacing to match the size of the bulletproof plate for easy fixing, and the movement can also drive the bulletproof plate to move horizontally to meet the needs of simultaneous bending detection of multiple sets of bulletproof plates, thereby improving the efficiency of the detection; the movement of the second moving frame 202 drives the upper and lower bending detection ends to move synchronously along the surface of the bulletproof plate, and data is collected during the movement to complete the detection work.

[0038] like Figures 4-6 As shown, the curvature detection assembly 201 includes a mounting frame 203 located on the movable frame 202; two sets of curvature detection rollers 207 are arranged one above the other on the mounting frame 203, and can move horizontally back and forth and left and right while the spacing is adjustable. The opposite ends of the two sets of curvature detection rollers 207 are the curvature detection ends; multiple sets of independent curvature detection elements 215 are provided on the curvature detection ends; during detection, the bulletproof plate passes between the two sets of curvature detection rollers 207. As the curvature detection rollers 207 move horizontally back and forth and left and right, the multiple sets of curvature detection elements 215 can perform synchronous S-shaped movement detection on the upper and lower end faces of the bulletproof plate.

[0039] The mounting bracket 203 has a through groove in the middle and guide grooves on both sides that connect to the through groove. Two sets of rotary drive heads 206 are set in the through groove to move up and down. They are driven by the built-in motor to rotate the corresponding lead screw 210. Lifting blocks 205 are set on both sides of the two sets of rotary drive heads 206. All four sets of lifting blocks 205 pass through the guide grooves and are driven by the cylinders 204 on the mounting bracket 203 to move up and down along the guide grooves.

[0040] It should be further explained that the cylinder 204 is a double-headed bidirectional cylinder 204, and the four sets of lifting blocks 205 are respectively connected to the upper and lower telescopic rod ends of the two sets of double-headed bidirectional cylinders 204.

[0041] It should be further explained that the two sets of lead screws 210 are threadedly connected to the sliding sleeves 211; the sliding sleeves 211 pass through the bending detection rollers 207.

[0042] It should be further explained that a guide rod 209 of a parallel lead screw 210 is provided between two adjacent sets of mounting brackets 203; the bending degree detection roller 207 is slidably connected to the guide rod 209.

[0043] The lifting block 205 drives the rotary drive head 206 to move up and down, and the bending detection roller 207 moves up and down synchronously. The lead screw 210 rotates, and the bending detection roller 207 moves horizontally synchronously.

[0044] like Figure 7 As shown, the curvature detection roller 207 has a row of detection holes 216 on its curvature detection end; the curvature detection component 215 includes a detection head 217 that slides up and down through the openings of the detection holes 216; a ball bearing 218 is installed on the contact end of the detection head 217 with the bulletproof plate, and a smart sensor 220 is installed on the other end; a return spring 219 is installed between the detection head 217 and the hole wall of the detection hole 216. The two sets of curvature detection rollers 207 move up and down as a whole until the spacing matches the thickness of the bulletproof plate. During the inspection process, each detection head 217 moves in an S-shaped pattern under the push of the return spring 219, following the translation of the curvature detection roller 207 and the bulletproof plate. The ball bearing 218 rolls against the surface of the bulletproof plate, moving up and down with the local curvature changes of the bulletproof plate, and the smart sensor 220 collects the position change data of the ball bearing 218. The control center converts the position change data into curvature change data on the S-shaped trajectory. By combining multiple bending data collected from various points with the bending data collected simultaneously from the top and bottom, a three-dimensional bending model of the bulletproof plate can be established, thus obtaining the overall bending condition of the bulletproof plate.

[0045] It should be further explained that the intelligent sensor 220 is a fusion of a MEMS (Micro-Electro-Mechanical Systems) inertial sensor and a miniature high-precision optical displacement sensor. Its core ranging layer (optical displacement sensor) emits a laser beam onto the surface of the bulletproof plate, and the reflected light is received by an adjacent CMOS / PSD photosensitive element. When changes in surface height cause the position of the reflected light point to shift, the photosensitive element accurately calculates the distance change using trigonometric relationships, thereby directly and with high precision measuring the micron-level relative displacement between the ball bearing 218 and the sensor body, i.e., the microscopic undulations of the bulletproof plate surface. Its motion compensation and attitude sensing layer (MEMS inertial sensor) integrates a 6-axis or 9-axis IMU (Inertial Measurement Unit), including a three-axis gyroscope for real-time measurement of the angular velocity of the detection head 217 during its S-shaped trajectory movement, a three-axis accelerometer for real-time measurement of linear acceleration, and a three-axis magnetometer to assist in correcting directional drift. Because the detection head is performing complex S-shaped movements, its own attitude (tilt, sway) will significantly affect the results of purely optical measurements. The IMU can detect these "invalid" motion noises in real time and subtract and compensate for them at the data level. The intelligent processing unit (with a built-in microprocessor) integrates a microprocessor (such as an ARM Cortex-M series core). It receives raw data from the optical layer and the IMU layer in real time, runs specific sensor fusion algorithms (such as Kalman filters), fuses displacement data with motion attitude data, and finally outputs a clean, motion-compensated bulletproof plate surface contour data.

[0046] It should be further explained that the optical components and MEMS chip of the aforementioned "intelligent detection module" are packaged into an ultra-small module (e.g., 3mm x 3mm x 5mm), allowing it to be embedded in the detection holes 216 of the curvature detection roller 207 in a high-density array. A high-speed data bus is pre-embedded inside the detection roller to power all modules and collect data. The dense sensor array ensures that the complete morphology of the bulletproof plate surface can be captured with extremely high spatial resolution during S-shaped trajectory scanning, with no measurement blind spots.

[0047] It should be further explained that the ball bearing 218 is made of high-hardness, high-transmittance sapphire or synthetic diamond material, serving as the optical window of the sensor. The robust ball bearing 218 window protects the internal precision optical lens from wear. The spring constant of the return spring 219 is precisely calculated and dynamically adjusted via a miniature electromagnetic damper, ensuring that the detection head 217 applies optimal, constant contact force to different types of bulletproof plates (such as smooth ceramic plates or rough polyethylene plates). This constant contact force ensures measurement consistency and avoids measurement errors caused by pressure variations.

[0048] It should be further explained that an edge computing node is integrated inside each curvature detection roller 207. This node is responsible for processing the raw data from all the smart sensors 220 on this roller, performing preliminary data fusion, filtering, and compression. The processed data is transmitted to the main control system in real time via a built-in micro millimeter-wave wireless communication module (such as the 60GHz band), replacing easily worn slip rings and complex cables. Reference calibration surfaces are reserved at both ends of each curvature detection roller 207. During equipment startup or downtime, all detection heads 217 automatically contact the reference surfaces for rapid zero-point calibration. The smart sensors 220 integrate temperature sensors, using algorithms to compensate for thermal expansion and contraction errors caused by equipment operation in real time.

[0049] It should be further explained that multiple sets of mounting grooves 214 are provided on the curvature detection roller 207; the openings of the multiple sets of mounting grooves 214 are respectively opened to both sides, and a rotating frame 212 driven by a motor is provided in the mounting groove 214; a connecting rod 213 is provided on the rotating frame 212; the connecting rod 213 extends out of the mounting groove 214 through the opening and connects to the cleaning scraper 208.

[0050] It should be further explained that the cleaning scraper 208 is wing-shaped and tilted to the left and right on both sides of the curvature detection roller 207.

[0051] The rotating frame 212 drives the connecting rod 213 to rotate, and the cleaning scraper 208 rotates synchronously. The cleaning scraper 208 has an arc-shaped scraping head on the contact end with the bulletproof plate. By rubbing the surface of the bulletproof plate with the scraping head, the adhering substances are scraped off, so as to achieve the purpose of cleaning before the curvature test and ensure the test effect.

[0052] like Figures 8-9 As shown, the moving feeding assembly 301 includes a feeding plate 303 located on a moving frame 302; the feeding plate 303 is provided with a feeding port 304, electric tracks 305 located on the left and right sides of the feeding port 304, and positioning components 306 located on the upper and lower sides of the feeding port 304; the positioning component 306 includes a positioning frame 308 that moves up and down in cooperation with the electric tracks 305; a positioning roller 309 is provided on the positioning end of the positioning frame 308; when the operator puts the bulletproof plate through the feeding port 304, the upper and lower positioning frames 308 move relative to each other until the positioning roller 309 clamps the edge of the bulletproof plate. After the bulletproof plate is fixed, it can remain stable during horizontal movement and bending detection.

[0053] It should be further explained that a row of air jets 310 is provided on the positioning frame 308; the air jets 310 are supplied with air through an external air pump and spray air onto the surface of the bulletproof plate; the air jets can clean the bulletproof plate. When the curvature detection roller 207 moves to the point where the cleaning scraper 208 is close to the corresponding side of the air jet 310, the air jet 310 discharges air, which can clean the debris accumulated on the scraper head of the cleaning scraper 208, ensuring the cleaning effect.

[0054] It should be further explained that an adjusting component 307 is provided between the two sets of positioning components 306, one above the other; an electric track 311 is provided on the feed inlet 304 along its length; the adjusting component 307 includes an adjusting block 312 that moves horizontally along the electric track 311; an adjusting rod 313, controlled by a cylinder 204, is provided on the adjusting block 312; the adjusting rod 313 is perpendicular to the positioning roller 309. When the bulletproof plate is placed, the positioning roller 309 fixes the bulletproof plate from above and below. The adjusting rod 313 moves from both sides of the bulletproof plate until it fits against the left and right sides of the bulletproof plate, adjusting its position to ensure that the bulletproof plate to be tested is in the correct position, thus ensuring the testing effect.

[0055] Example 2: This example proposes a method for detecting the curvature of bulletproof plates based on Internet of Things (IoT) technology. The method uses the IoT-based bulletproof plate curvature detection equipment described in Example 1, and the detection method is as follows:

[0056] S1. The spacing between the two sets of movable frames 302 is adjusted in advance to match the size of the bulletproof plate;

[0057] S2. The staff put the bulletproof plates one by one through the feed port 304; the bulletproof plates pass between the two sets of bending detection rollers 207; the positioning rollers 309 at both ends move up and down until they clamp the two edges of the bulletproof plates.

[0058] S3. The adjusting rod 313 moves from both sides of the bulletproof plate until it fits the left and right sides of the bulletproof plate, and adjusts its position so that the bulletproof plate to be tested is in the correct position.

[0059] S4. The lifting block 205 drives the rotary drive head 206 to move up and down, and the bending detection roller 207 moves up and down synchronously until the spacing matches the thickness of the bulletproof plate, and the detection head 217 is attached to the upper and lower end faces of one end of the bulletproof plate.

[0060] S5. The bulletproof plate moves synchronously with the moving frame 302; the bending detection roller 207 moves back and forth and left and right; during the above process, the cleaning scraper 208 rotates and the scraping head rubs against the surface of the bulletproof plate to scrape off the attached substances; the air jet head 310 emits air to clean the bulletproof plate and the debris accumulated on the scraping head of the cleaning scraper 208.

[0061] S6. The detection head 217 moves in an S-shaped pattern under the push of the return spring 219; the ball bearing 218 rolls against the cleaned bulletproof plate surface and moves up and down with the local curvature change of the bulletproof plate; the intelligent sensor 220 collects the position change data of the corresponding ball bearing 218.

[0062] S7. The control center converts the position change data into curvature change data on the S-shaped trajectory; by combining the multiple curvature data collected from multiple points with the curvature data collected simultaneously from the top and bottom, a three-dimensional curvature model of the bulletproof plate can be established to obtain the overall curvature of the bulletproof plate.

[0063] S8. After simultaneously completing the bending test on a batch of bulletproof plates, remove all the bulletproof plates and proceed with the next round of testing.

[0064] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A device for detecting the bending degree of bulletproof plates based on Internet of Things (IoT) technology, characterized in that, It includes a base (1), two sets of movable feeding parts (3) that are movably arranged on both sides of the base (1), and a bending detection part (2) that moves between the two sets of movable feeding parts (3). The mobile feeding unit (3) includes a mobile frame (302) that cooperates with the base (1) and multiple sets of mobile feeding components (301) arranged along the length of the mobile frame (302). The bending degree detection unit (2) includes a movable frame two (202) that cooperates with the base one and multiple sets of bending degree detection components (201) arranged along the length direction of the movable frame two (202). The moving frame one (302) and the moving frame two (202) move in the same direction; The bending degree detection component (201) and the moving feeding components (301) on both sides are matched one-to-one, and the bending degree detection ends are set up one above the other. The moving feed assembly (301) secures the bulletproof plate from both ends and moves it. The curvature detection assembly (201) includes a mounting frame (203) located on the movable frame two (202); two sets of curvature detection rollers (207) are arranged one above the other on the mounting frame (203), and can move horizontally back and forth and left and right while the distance between them is adjustable. The opposite ends of the two sets of curvature detection rollers (207) are the curvature detection ends; multiple independent curvature detection elements (215) are provided on the curvature detection ends; a row of detection holes (216) is provided on the curvature detection ends of the curvature detection rollers (207). The bending test component (215) includes a test head (217) that slides up and down through the opening of the test hole (216); a ball bearing (218) is provided on the contact end of the test head (217) with the bulletproof plate, and a smart sensor (220) is provided on the other end; a reset spring (219) is provided between the test head (217) and the wall of the test hole (216); The bending detection roller (207) moves synchronously along the upper and lower end faces of the bulletproof plate in an S-shaped trajectory, driving the detection head (217) to adaptively fit the surface of the bulletproof plate under the elastic action of the return spring (219), the ball (218) rolls, and the intelligent sensor (220) synchronously collects continuous bending data of the upper and lower end faces. The mounting frame (203) has a through groove in the middle and guide grooves on both sides that connect to the through groove. Two sets of rotary drive heads (206) are set in the through groove to move up and down, driving the corresponding lead screws (210) to rotate. Lifting blocks (205) are set on both sides of the two sets of rotary drive heads (206). The four sets of lifting blocks (205) pass through the guide grooves and move up and down along the guide grooves. The two sets of lead screws (210) are threadedly connected to the sliding sleeves (211). The sliding sleeves (211) pass through the bending detection rollers (207). Multiple sets of mounting grooves (214) are provided on the bending degree detection roller (207); the openings of the multiple sets of mounting grooves (214) are opened to both sides respectively, and a rotating frame (212) is provided in the mounting groove (214); a connecting rod (213) is provided on the rotating frame (212); the connecting rod (213) extends out of the mounting groove (214) through the opening and connects to the cleaning scraper (208); the cleaning scraper (208) is inclinedly arranged on both sides of the bending degree detection roller (207).

2. The bulletproof plate bending detection device based on Internet of Things technology according to claim 1, characterized in that, Multiple parallel electric tracks (101) are set on the base (1); the first moving frame (302) and the second moving frame (202) both cooperate with the first electric track (101) to achieve linear reciprocating movement along the base (1).

3. The bulletproof plate bending detection device based on Internet of Things technology according to claim 1, characterized in that, The mobile feeding assembly (301) includes a feeding plate (303) located on a mobile frame (302); the feeding plate (303) is provided with a feeding port (304), electric rails (305) located on the left and right sides of the feeding port (304), and positioning parts (306) located on the upper and lower sides of the feeding port (304). The positioning component (306) includes a positioning frame (308) that moves up and down in cooperation with the electric track (305); a positioning roller (309) is provided on the positioning end of the positioning frame (308).

4. The bulletproof plate bending detection device based on Internet of Things technology according to claim 3, characterized in that, A row of jet nozzles (310) is provided on the positioning frame (308); the jet nozzles (310) are supplied with air through an external air pump and spray air onto the surface of the bulletproof plate.

5. The bulletproof plate bending detection device based on Internet of Things technology according to claim 4, characterized in that, An adjusting element (307) is provided between the two sets of positioning elements (306) that are positioned one above the other. The feed inlet (304) is provided with an electric track three (311) arranged along its length; the adjusting component (307) includes an adjusting block (312) that moves horizontally along the electric track three (311); the adjusting block (312) is provided with a telescopic adjusting rod (313); The adjusting rod (313) and the positioning roller (309) are perpendicular to each other.

6. A method for detecting the bending degree of bulletproof plates based on Internet of Things (IoT) technology, characterized in that, The ballistic plate bending detection device based on IoT technology as described in claim 5 is used, and the detection method is as follows: S1. The spacing between the two sets of movable frames (302) is adjusted in advance to match the size of the bulletproof plate; S2. The staff put the bulletproof plates one by one through the feed port (304); the bulletproof plates pass between the two sets of bending detection rollers (207); the positioning rollers (309) at both ends move up and down until they clamp the two edges of the bulletproof plates. S3. The adjusting rod (313) moves from both sides of the bulletproof plate until it fits the left and right sides of the bulletproof plate, and adjusts its position so that the bulletproof plate to be tested is in the correct position. S4. The lifting block (205) drives the rotating drive head (206) to move up and down, and the bending detection roller (207) moves up and down synchronously until the spacing matches the thickness of the bulletproof plate, and the detection head (217) is attached to the upper and lower end surfaces of one end of the bulletproof plate. S5. The bulletproof plate moves synchronously with the moving frame (302); the bending detection roller (207) moves back and forth and left and right; during the above process, the cleaning scraper (208) rotates and the scraping head rubs against the surface of the bulletproof plate to scrape off the attached substances; the air jet (310) emits air to clean the bulletproof plate and the debris accumulated on the scraping head of the cleaning scraper (208); S6. The detection head (217) moves in an S-shape under the push of the return spring (219); the ball (218) rolls against the cleaned bulletproof plate surface and moves up and down with the local curvature change of the bulletproof plate; the intelligent sensor (220) collects the position change data of the corresponding ball (218). S7. The control center converts the position change data into curvature change data on the S-shaped trajectory; by combining the multiple curvature data collected from multiple points with the curvature data collected simultaneously from the top and bottom, a three-dimensional curvature model of the bulletproof plate can be established to obtain the overall curvature of the bulletproof plate. S8. After simultaneously completing the bending test on a batch of bulletproof plates, remove all the bulletproof plates and proceed with the next round of testing.

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