Stress method tempered glass self-explosion defect detection device and detection method thereof

Abstract

The application discloses a stress method tempered glass self-explosion defect detection device and a detection method thereof and relates to the field of explosion-proof glass detection. The stress method tempered glass self-explosion defect detection device comprises a probe support, a truss and a detection assembly. The probe support is used for external installation. The truss is installed on the upper end face of the probe support and is used for supporting a detection device. The detection assembly is installed on the lower end face of the truss and is used for glass defect detection. The device improves the mode that a traditional stress instrument polaroid can only be measured at a single point in one rotation. The polaroid wheel is continuously rotated by driving a motor, and a photoelectric switch trigger is matched to capture an image. The light signal does not need to be collected degree by degree in a whole rotation. A global shutter camera is relied on to synchronously collect multi-angle polarization images, an original photosensitive tube single-point sampling mode is replaced, the detection time of a single piece of tempered glass is greatly shortened, the problems that a traditional device detection process is complicated and single-point measurement is time-consuming and labor-consuming are solved, and the overall detection work accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof glass testing technology, specifically to a stress-based method for detecting spontaneous breakage defects in tempered glass and its testing method. Background Technology

[0002] Explosion-proof glass is a type of special safety glass, mainly with a laminated structure. It can also be used with explosion-proof film. When it is impacted, struck, or damaged by external force, the glass body will shatter, but the fragments will be firmly adhered by the interlayer or film and will not fly everywhere, effectively preventing cuts and shards. However, in daily use, nickel sulfide inside the glass can cause it to spontaneously shatter. The core issue is the volume expansion caused by its crystal phase transformation, which breaks the balance of the prestress inside the glass.

[0003] The tempered glass spontaneous breakage defect detection device is a specialized device based on technologies such as photoelastic effect, optical scanning and stress detection. Its core function is to identify spontaneous breakage causes such as nickel sulfide impurities, stress concentration, and microcracks inside tempered glass. It can perform non-destructive screening during the factory or operation and maintenance stages, locate risk areas and quantify stress anomalies, and provide early warning of potential spontaneous breakage hazards.

[0004] However, the current testing methods have the following shortcomings: 1. Existing stress meters rely on a polarizer rotating once and collecting light signals once per degree. This means they can only perform stress calculations at a single point, resulting in long measurement cycles and insufficient overall detection efficiency, making them unsuitable for large-scale explosion-proof glass testing.

[0005] 2. The detection mode that uses a single-point phototube to receive light intensity signals cannot collect image information of the entire tempered glass sheet, and cannot form a large-area, full-domain stress distribution detection capability.

[0006] 3. Due to limitations in the rotational speed of the mechanical rotating structure and the processing power of the computer, the potential for speed improvement of polarizers is limited, making it impossible to meet the continuous and rapid online testing requirements of tempered glass production lines.

[0007] To address the shortcomings of existing technologies, this invention provides a stress-based method for detecting spontaneous breakage defects in tempered glass and a method thereof, thereby solving the aforementioned problems. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a stress-based method for detecting spontaneous breakage defects in tempered glass, thus solving the aforementioned problems.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a stress-based tempered glass spontaneous breakage defect detection device, comprising: Probe support for external mounting; A truss, installed on the upper end face of the probe support, is used to support the testing equipment; A detection assembly, installed on the lower end face of the truss, is used for glass defect detection; A data acquisition component is installed on the lower end face of the truss for data acquisition. An integrated processing unit is located on one side of the probe support and is used for data analysis and processing. The detection assembly includes a housing mounted on the lower end face of the truss, a polarizing wheel bearing seat mounted on the inner bottom end of the housing, and a polarizing plate wheel mounted on the rotating end of the polarizing wheel bearing seat.

[0010] Preferably, the detection component further includes a photoelectric switch installed on the side wall of the polarizing wheel bearing seat, a bracket installed on the inner wall of the housing, and a CCD line array camera installed inside the bracket, with the acquisition end of the CCD line array camera corresponding to the polarizing wheel.

[0011] Preferably, a polarizer body is installed on the inner wall of the polarizer wheel, a belt is installed on the outer wall of the polarizer wheel bearing seat, and a motor frame is installed on the inner wall of the housing corresponding to the belt.

[0012] Preferably, a drive motor is installed on the inner wall of the motor frame, and a defective motor wheel is installed at the output end of the drive motor. The defective motor wheel is installed on the inner wall of the belt.

[0013] Preferably, the acquisition component includes an industrial global shutter camera installed at the top of the truss, the industrial global shutter camera being signal-connected to the photoelectric switch, and an antenna being installed at the signal output end of the industrial global shutter camera.

[0014] Preferably, the integrated processing unit includes an industrial edge intelligent control computer installed on the outer wall of the probe support. The industrial edge intelligent control computer is connected to the photoelectric switch, the drive motor and the industrial global shutter camera. A PLC controller is installed on one of the output terminals of the industrial edge intelligent control computer.

[0015] Preferably, a crossbeam is provided on the inner side of the probe support, and a conveying roller is installed inside the crossbeam. A synchronous belt is installed on the drive end of several of the conveying rollers.

[0016] Preferably, a base frame is installed on the inner side wall of the probe support, a polarizing light source is installed on the upper end surface of the base frame, and a stress detector is installed on the lower end surface of the truss corresponding to the polarizing light source.

[0017] Preferably, a speed reducer for controlling the transmission of the conveyor rollers is installed on one side of the crossbeam, and heat dissipation fins are installed on the outer wall of the speed reducer.

[0018] This invention also discloses a detection method for a stress-based tempered glass spontaneous breakage defect detection device, applicable to the aforementioned stress-based tempered glass spontaneous breakage defect detection device, the method comprising the following steps: S1, Material conveying and positioning: The tempered glass to be tested is conveyed to the testing station at a uniform speed by the conveyor rollers. The bottom polarized light source is turned on to provide stable polarized illumination and complete the pre-test alignment preparation. S2, Polarizer Angle Positioning: The drive motor drives the polarizer wheel to rotate at high speed, and the photoelectric switch calibrates the position in real time to accurately lock three preset polarization angles; S3, Polarization Image Acquisition: A photoelectric switch triggers an industrial global shutter camera to acquire glass polarization images at three set angles and transmit the image data to the industrial control computer in real time; S4, Stress Analysis and Risk Assessment: The industrial edge intelligent control computer performs differential operations on the image, analyzes the stress distribution, abnormal points and gradients, calculates the probability of spontaneous explosion, and links the PLC controller to output the detection and assessment results.

[0019] The technical effects and advantages of this invention are as follows: 1. This stress-based tempered glass spontaneous breakage defect detection device improves upon the traditional stress meter's single-point measurement mode, which only allows for one-round rotation of the polarizer. By driving a motor to continuously rotate the polarizer wheel, and coordinating with a photoelectric switch to precisely position the angle and trigger image capture, it eliminates the need for sequential 260-degree light signal acquisition. Instead, it utilizes an industrial global shutter camera to simultaneously acquire multi-angle polarized images, replacing the original single-point sampling method of the phototube. This significantly shortens the inspection time for a single piece of tempered glass, solving the problems of cumbersome inspection processes and time-consuming, labor-intensive single-point measurements inherent in traditional equipment, and improving the overall accuracy of the inspection work.

[0020] 2. This device enables continuous feeding of tempered glass via conveyor rollers. It utilizes an industrial global shutter camera to capture polarization images of the glass over the entire area. Then, an industrial edge intelligent control computer performs stress calculation and analysis on the entire glass image. This overcomes the limitations of traditional stress meters, which can only detect single points and cannot obtain large-area stress distribution data. It can completely map the stress field on the glass surface, accurately identify stress distortion points and stress change gradients, and achieve full-coverage stress detection of the entire tempered glass.

[0021] 3. This device adopts an integrated structure of motor belt drive, photoelectric switch angle positioning, camera image acquisition and industrial edge intelligent industrial control computer collaborative operation. It is not limited by the mechanical speed of traditional equipment and the computing power of old computers. It can match the continuous uniform feeding rhythm of the production line conveyor roller. At the same time, the industrial control computer is linked with the PLC controller and the production line for linkage control. It can adapt to the continuous online rapid inspection scenario of tempered glass industry and meet the quality inspection needs of mass production. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the casing structure in this invention; Figure 3 This is a schematic diagram of the structure of the CCD linear array camera in this invention; Figure 4 This is a schematic diagram of the photoelectric switch in this invention; Figure 5 This is a schematic diagram of the stress detector in this invention; Figure 6 for Figure 1 Schematic diagram of the structure at point A; Figure 7 This is a schematic diagram of the process of the present invention; Figure 8 This is a schematic diagram of the polarization angle in this invention; Figure 9 This is the first performance curve of polarized light energy as a function of stress angle in this invention; Figure 10 This is a second performance curve showing the change of polarized light energy with stress angle in this invention.

[0024] In the diagram: 1. Crossbeam; 2. Detection component; 201. Housing; 202. Polarizing wheel bearing seat; 203. Polarizing wheel; 204. Photoelectric switch; 205. CCD line array camera; 206. Polarizing plate body; 207. Belt; 208. Motor frame; 209. Drive motor; 210. Defect motor wheel; 3. Acquisition component; 301. Industrial global shutter camera; 302. Antenna; 4. Integrated processing unit; 401. Edge intelligent industrial control computer; 402. PLC controller; 5. Conveyor roller; 6. Base frame; 7. Polarizing light source; 8. Probe support; 9. Stress detector; 10. Truss; 11. Reducer. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] This embodiment discloses a stress-based tempered glass spontaneous breakage defect detection device, according to the appendix... Figure 1 To be continued Figure 10 As shown, it includes: Probe support 8 is used for external mounting; Truss 10 is installed on the upper end face of probe support 8 to support the testing equipment; The detection component 2 is installed on the lower end face of the truss 10 and is used for glass defect detection; Data acquisition component 3 is installed on the lower end face of truss 10 and is used for data acquisition; The integrated processing unit 4 is located on one side of the probe support 8 and is used for data analysis and processing. The detection component 2 includes a housing 201 installed on the lower end face of the truss 10. A polarizing wheel bearing seat 202 is installed on the inner bottom end of the housing 201, and a polarizing plate wheel 203 is installed on the rotating end of the polarizing wheel bearing seat 202. The probe support 8 can provide stable support for multiple detection components, thereby maintaining their stability during the detection of defects in explosion-proof glass. The truss 10 can connect the probe support 8, thereby increasing the overall stability of the equipment by improving rigidity and preventing the equipment from tipping over due to the large weight of glass during automated conveying. The detection component 2 can utilize its internal drive device to achieve polarization detection at multiple angles during the explosion-proof glass inspection by rotating. In conjunction with the acquisition component 3, data is acquired, and then the integrated processing unit 4 is used to analyze and process the data to calculate whether there are stress distortion points and stress change gradient values ​​in the cross section of the tempered glass.

[0027] The detection component 2 also includes a photoelectric switch 204 installed on the side wall of the polarizing wheel bearing seat 202, a bracket installed on the inner wall of the housing 201, and a CCD line array camera 205 installed inside the bracket. The acquisition end of the CCD line array camera 205 corresponds to the polarizing wheel 203. The CCD linear array camera 205 can acquire glass images at high speed in real time. With the photoelectric switch 204, a large number of images can be acquired when the polarizer wheel 203 rotates at high speed for subsequent analysis. The photoelectric switch 204 can be used in conjunction with the integrated processing unit 4 to acquire data at polarization angles of -α, zero, and α.

[0028] A polarizer body 206 is installed on the inner wall of the polarizer wheel 203, a belt 207 is installed on the outer wall of the polarizer wheel bearing seat 202, a motor frame 208 is installed on the inner wall of the housing 201 on the side corresponding to the belt 207, a drive motor 209 is installed on the inner wall of the motor frame 208, a defective motor wheel 210 is installed at the output end of the drive motor 209, and the defective motor wheel 210 is installed on the inner wall of the belt 207. The drive motor 209 installed on the inner wall of the motor frame 208 can drive the defective motor wheel 210 to rotate, and then drive the polarizer wheel 203 to rotate synchronously through the belt 207. The polarizer body 206 in the polarizer wheel 203 can realize the polarization optical path, which facilitates the data acquisition component 3 to acquire data.

[0029] The acquisition component 3 includes an industrial global shutter camera 301 installed at the top of the truss 10. The industrial global shutter camera 301 is connected to the photoelectric switch 204. An antenna 302 is installed at the signal output end of the industrial global shutter camera 301. The industrial global shutter camera 301 can quickly acquire data during the glass inspection process by following the triggering of the photoelectric switch 204. Multiple acquisition units can acquire a large number of glass inspection images, and the antenna 302 at its signal output end can transmit the data completely and quickly to the integrated processing unit 4 for data analysis and processing.

[0030] The integrated processing unit 4 includes an industrial edge intelligent industrial control computer 401 installed on the outer wall of the probe support 8. The industrial edge intelligent industrial control computer 401 is connected to the photoelectric switch 204, the drive motor 209 and the industrial global shutter camera 301. One of the output terminals of the industrial edge intelligent industrial control computer 401 is equipped with a PLC controller 402. The industrial edge intelligent industrial control computer 401 can work with the photoelectric switch 204 and the industrial global shutter camera 301 to quickly compare and analyze the received signals, and then calculate and judge the detection results of the glass from multiple angles. The PLC controller 402 can be linked with external display devices to realize rapid and automated detection of large batches of glass.

[0031] A crossbeam 1 is provided on the inner side of the probe support 8. A conveyor roller 5 is installed inside the crossbeam 1. A synchronous belt is installed on the drive end of several conveyor rollers 5. A base frame 6 is installed on the inner wall of the probe support 8. A polarizing light source 7 is installed on the upper end face of the base frame 6. A stress detector 9 is installed on the lower end face of the truss 10 corresponding to the polarizing light source 7. A reducer 11 for controlling the transmission of the conveyor rollers 5 is installed on one side of the crossbeam 1. Heat dissipation fins are installed on the outer wall of the reducer 11. The glass can be transported quickly by the conveyor roller 5, thereby improving the automation of the inspection. The synchronous belt can drive multiple conveyor rollers 5 to move synchronously, maintaining the stable effect of synchronous glass transport. The base frame 6 on the inner side wall of the probe support 8 can keep the polarized light source 7 installed on it in a stable state during operation, unaffected by the vibration during glass transport. The polarized light source 7 can provide a light source for glass inspection, and together with the polarizer 206, the optical path is complete. The stress detector 9 on the lower end of the truss 10 can assist the light source in inspection, and the stress detection provides comprehensive inspection data. By transmitting the data to the edge intelligent industrial control computer 401, the accuracy of its analysis is improved. The reducer 11 on one side of the beam 1 can provide power to multiple conveying rollers 5, thereby ensuring stable and continuous conveying of the glass. The heat dissipation fins on its outer wall can quickly release the working heat, preventing heat accumulation from affecting the conveying effect.

[0032] Example 1, in conjunction with Appendix Figure 1 To be continued Figure 8 The complete workflow is explained in detail below, with the following steps: S1, Material conveying and positioning: The tempered glass to be tested is conveyed to the testing station at a uniform speed by the conveying roller 5. The bottom polarized light source 7 is turned on to provide stable polarized illumination and complete the pre-test alignment preparation. The tempered glass to be tested is placed stably on the conveyor roller 5 inside the crossbeam 1. Powered by the reducer 11, the conveyor roller 5 is driven by the synchronous belt to rotate synchronously and uniformly, so as to stably transport the tempered glass to the testing station directly below the testing component 2 and the acquisition component 3. The polarization light source 7 installed on the upper part of the base frame 6 continuously emits monochromatic polarized light with a fixed polarization direction. The light penetrates the tempered glass from bottom to top, forming a standard polarization light path environment. All components of the machine maintain a relatively fixed position, completing the alignment of glass materials, optical path pre-setting, and pre-test condition preparation, providing a stable foundation for subsequent polarization imaging and stress detection.

[0033] S2, Polarizer Angle Positioning: Drive motor 209 drives polarizer wheel 203 to rotate at high speed, photoelectric switch 204 calibrates the position in real time, and accurately locks three preset polarization angles; The drive motor 209 is fixedly mounted on the motor frame 208. It drives the polarizer wheel 203 to rotate continuously at high speed and uniform speed under the support of the polarizer wheel bearing seat 202 through the defective motor wheel 210 at the output end in conjunction with the belt 207. The photoelectric switch 204 installed on the side wall of the housing 201 senses the rotation reference point of the polarizer wheel 203 in real time, collects the rotation position signal in real time, and calibrates and locks the three preset polarization angles of -α, 0° and +α in real time, providing a precise angle positioning and timing trigger reference for the subsequent precise fixed-point image acquisition by the industrial global shutter camera 301.

[0034] S3, Polarization Image Acquisition: Photoelectric switch 204 triggers industrial global shutter camera 301 to acquire glass polarization images at three set angles and transmit the image data to the industrial control computer in real time; When the polarizer wheel 203 rotates to the three preset angle positions of -α, 0° and +α in sequence, the photoelectric switch 204 immediately outputs a hardware trigger signal, which is synchronously sent to the industrial global shutter camera 301. The camera is mounted on the bracket at the lower end of the truss 10. After receiving the trigger command, it quickly acquires polarization imaging images of the tempered glass at the three polarization angles. After acquisition, the industrial global shutter camera 301 transmits all the original polarization images to the industrial edge intelligent industrial control computer 401 in real time via the signal link, providing complete original image data support for subsequent stress difference calculation, stress distortion point and gradient analysis.

[0035] S4, Stress Analysis and Risk Assessment: The industrial edge intelligent control computer 401 performs differential operations on the image, analyzes the stress distribution, abnormal points and gradients, calculates the probability of spontaneous explosion, and links the PLC controller 402 to output the detection and assessment results. The industrial edge intelligent industrial control computer 401 receives three polarized images transmitted by the industrial global shutter camera 301, performs image difference calculation through built-in algorithms, analyzes the stress distribution state on the tempered glass surface point by point, accurately identifies stress distortion points and calculates stress change gradient values. The industrial control computer quantifies and analyzes the degree of stress anomaly based on a preset threshold model, and analyzes the probability of spontaneous breakage risk during the use of tempered glass in combination with preset values. At the same time, it establishes signal linkage with the PLC controller 402, and uses the PLC controller 402 to link with external display devices to output defect judgment, risk level and sorting control instructions in real time, so as to realize intelligent analysis, judgment and production line collaborative management of tempered glass spontaneous breakage defects.

[0036] Example 2: This example uses the entire glass testing process as an example. The workflow is as follows: The tempered glass to be tested is placed on the conveyor roller 5 inside the crossbeam 1. The reducer 11 drives the synchronous belt to make the conveyor roller 5 rotate at a constant speed, and smoothly transports the glass to the testing station above the polarization light source 7. The polarization light source 7 on the base frame 6 emits polarized light in a fixed direction, which penetrates the tempered glass from bottom to top to form a basic polarization light path. Drive motor 209 drives polarizer wheel 203 to rotate continuously at high speed under the support of polarizer wheel bearing seat 202 via defect motor wheel 210 and belt 207; photoelectric switch 204 senses the rotation position of polarizer wheel 203 in real time and accurately calibrates three characteristic polarization angles: -α, 0°, and α. When polarizer wheel 203 drives polarizer body 206 to the set angle, photoelectric switch 204 outputs a trigger signal to start industrial global shutter camera 301 under truss 10, which sequentially acquires three glass images with different polarization angles and uploads them to industrial edge intelligent industrial control computer 401 in real time. The industrial control computer performs differential calculations on three frames of polarization images, uses the principle of polarization stress interference to analyze the stress distribution across the entire glass domain, identifies stress distortion points and calculates the stress change gradient, and quantifies the risk coefficient of spontaneous explosion based on a preset algorithm model. Simultaneously, the industrial control computer and PLC controller 402 signal linkage, combined with the conveying rhythm of conveyor roller 5, motor rotation timing, and camera acquisition timing, realize the coordinated cooperation of multiple driving components, and finally output the detection and judgment results in conjunction with the external display device, completing the entire process of intelligent detection of tempered glass from conveying, polarization imaging, stress analysis to spontaneous breakage defect judgment. Example

[0037] In this embodiment, a 4096-pixel CCD line array camera 205 is selected, α is set to 9°, the rotating polarizer is controlled by the drive motor 209 to rotate at 200 r / s, the glass conveying roller 5 is matched with a linear speed of 140 mm / s, and a single pixel corresponds to a glass width of 0.35 mm. The tempered glass is driven by the reducer 11 to move the conveyor roller 5 upward at a constant speed, and the bottom polarization light source 7 outputs polarized light that penetrates the plate. The motor drives the polarizing wheel 203 to rotate clockwise continuously via the belt 207, and the photoelectric switch 204 outputs trigger signals at the -9°, 0° and +9° positions in sequence. The linear scan camera acquires images A, B, and C in three separate steps and records the light energy E-αi, E0i, and Eαi of each pixel. The industrial control computer retrieves the three sets of coordinate data and applies the parabolic formula E=a(x-β)²+c to solve the stress angle βi point by point. After continuous scanning, a stress distribution map of the entire plate is formed. in, E: Measured light intensity value after polarized light passes through a rotating polarizer (grayscale value captured by camera pixels, original image brightness); a: Parabolic aperture coefficient, a fixed constant determined by the illuminance of the light source and optical loss; x: The polarization angle between the rotating polarizer and the light source polarizer B11 (variable, unit °). β: Equivalent stress deflection angle at the test location (a core parameter to be determined, the angle of polarization deflection caused by internal stress in the glass, used to calculate the stress magnitude). c: Minimum transmittance reference value (intensity valley value, corresponding to the extinction position) at this pixel location. The software filters out single-point stress distortion values ​​and extreme values ​​of stress gradient per unit area, distinguishing between two types of spontaneous explosion hazards: local abrupt stress in nickel sulfide inclusions and excessive stress in tempered glass due to uneven heating and cooling. Simultaneously, it uses PLC to mark high-risk glass. This parameter configuration balances detection accuracy and production line cycle time, replacing the traditional high-temperature 8-hour aging screening in a homogenizing furnace, significantly reducing energy consumption and detection time.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stress-based method for detecting spontaneous breakage defects in tempered glass, characterized in that, include: Probe support (8) is used for external mounting; A truss (10) is installed on the upper end face of the probe support (8) to support the detection equipment; The detection component (2) is installed on the lower end face of the truss (10) for glass defect detection; The acquisition component (3) is installed on the lower end face of the truss (10) for data acquisition; An integrated processing unit (4) is disposed on one side of the probe support (8) for data analysis and processing; The detection component (2) includes a housing (201) installed on the lower end face of the truss (10), a polarizing wheel bearing seat (202) installed on the inner bottom end of the housing (201), and a polarizing wheel (203) installed on the rotating end of the polarizing wheel bearing seat (202).

2. The stress-based tempered glass spontaneous breakage defect detection device according to claim 1, characterized in that, The detection component (2) also includes a photoelectric switch (204) installed on the side wall of the polarizing wheel bearing seat (202). A bracket is installed on the inner wall of the housing (201), and a CCD line array camera (205) is installed inside the bracket. The acquisition end of the CCD line array camera (205) corresponds to the polarizing wheel (203).

3. The stress-based tempered glass spontaneous breakage defect detection device according to claim 2, characterized in that, The inner wall of the polarizing wheel (203) is fitted with a polarizing plate (206), the outer wall of the polarizing wheel bearing seat (202) is fitted with a belt (207), and the inner wall of the housing (201) is fitted with a motor frame (208) on the side corresponding to the belt (207).

4. The stress-based tempered glass spontaneous breakage defect detection device according to claim 3, characterized in that, A drive motor (209) is installed on the inner wall of the motor frame (208), and a defective motor wheel (210) is installed at the output end of the drive motor (209). The defective motor wheel (210) is installed on the inner wall of the belt (207).

5. The stress-based tempered glass spontaneous breakage defect detection device according to claim 2, characterized in that, The acquisition component (3) includes an industrial global shutter camera (301) installed at the top of the truss (10). The industrial global shutter camera (301) is connected to the photoelectric switch (204) and an antenna (302) is installed at the signal output end of the industrial global shutter camera (301).

6. The stress-based tempered glass spontaneous breakage defect detection device according to claim 5, characterized in that, The integrated processing unit (4) includes an industrial edge intelligent industrial control computer (401) installed on the outer wall of the probe support (8). The industrial edge intelligent industrial control computer (401) is connected to the photoelectric switch (204), the drive motor (209) and the industrial global shutter camera (301). A PLC controller (402) is installed on one of the output terminals of the industrial edge intelligent industrial control computer (401).

7. The stress-based tempered glass spontaneous breakage defect detection device according to claim 1, characterized in that, The probe support (8) has a crossbeam (1) on its inner side, and a conveyor roller (5) is installed inside the crossbeam (1). A synchronous belt is installed at the drive end of several of the conveyor rollers (5).

8. The stress-based tempered glass spontaneous breakage defect detection device according to claim 7, characterized in that, The probe support (8) has a base frame (6) installed on its inner side wall. A polarizing light source (7) is installed on the upper end face of the base frame (6). A stress detector (9) is installed on the lower end face of the truss (10) corresponding to the polarizing light source (7).

9. The stress-based tempered glass spontaneous breakage defect detection device according to claim 7, characterized in that, A speed reducer (11) for controlling the transmission of the conveyor roller (5) is installed on one side of the crossbeam (1), and heat dissipation fins are installed on the outer wall of the speed reducer (11).

10. A detection method for a stress-based tempered glass spontaneous breakage defect detection device, applied to the stress-based tempered glass spontaneous breakage defect detection device as described in any one of claims 1-9, characterized in that, The method includes the following steps: S1, Material conveying and positioning: The tempered glass to be tested is conveyed to the testing station at a constant speed by the conveying roller (5), and the bottom polarized light source (7) is turned on to provide stable polarized illumination and complete the pre-test alignment preparation. S2, Polarizer Angle Positioning: The drive motor (209) drives the polarizer wheel (203) to rotate at high speed, and the photoelectric switch (204) calibrates the position in real time to accurately lock three preset polarization angles; S3, Polarization Image Acquisition: The photoelectric switch (204) triggers the industrial global shutter camera (301) to acquire glass polarization images at three set angles and transmit the image data to the industrial control computer in real time; S4, Stress Analysis and Risk Assessment: The industrial edge intelligent industrial control computer (401) performs differential operation on the image, analyzes the stress distribution, abnormal points and gradient, calculates the probability of self-destruction, and links the PLC controller (402) to output the detection and assessment results.

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