Ignition needle detection device and method

Abstract

The invention discloses an ignition needle detection device and method, and the device comprises a rotating disc, the top end of the rotating disc is provided with a plurality of positioning frames at equal intervals, the interior of the top end of each positioning frame is rotatably connected with a connecting disc, the top end of each connecting disc is provided with three adjustable rotating rollers, and the interior of each connecting disc is provided with a placement cylinder in a penetrating manner. According to the invention, through cooperation of dual-view image acquisition and multi-module cooperative detection, an inner cavity structure can be rapidly detected, size parameters such as bore diameter, depth and coaxiality of an inner cavity and tiny defects such as scratches, pores and cracks can be accurately captured, and the ignition needle detection system can accurately detect an ignition needle through image preprocessing, single-angle analysis and a three-dimensional fusion module. Visual data is linked with electrical parameters such as insulation resistance and ignition voltage, a multi-dimensional quality judgment basis is formed, local detection blind areas are thoroughly avoided, and it is ensured that the whole performance of a product reaches the standard.

Description

Technical Field

[0001] This invention relates to the field of ignition needle detection technology, specifically to an ignition needle detection device and method. Background Technology

[0002] As the core ignition component of gas stoves, gas water heaters, industrial burners and other equipment, the performance of the ignition needle directly determines the ignition success rate, operational safety and service life of the equipment. It is a key component to ensure efficient energy utilization and safe use.

[0003] Existing technologies for testing ignition needles are single-dimensional, such as relying solely on operators to test insulation resistance or conducting ignition tests to determine the ignition needle's qualification. Therefore, existing technologies do not take into account the integrity of the ignition needle's internal structure, which can easily lead to ignition needle products that are partially qualified but fail as a whole.

[0004] A search revealed that Chinese patent literature discloses an automatic testing device for ceramic ignition needles (publication number: CN215812543U). This utility model discloses an automatic testing device for ceramic ignition needles, comprising a housing and a ceramic ignition needle body. A motor is fixedly connected to one outer wall of the housing, and a rotating shaft is fixedly connected to one end of the motor's output shaft. Multiple detection arms are fixedly connected to one side of the rotating shaft. A slot is formed on the lower surface of each detection arm, and a sliding groove is formed on the upper surface of each detection arm. A slider is slidably connected within the sliding groove, and an arc-shaped groove is formed on one side of the slider. A battery is fixedly connected to the bottom inner wall of the housing, and a conductive cable is electrically connected to the upper surface of the battery. One end of the conductive cable is electrically connected to the slider. Multiple mounting plates are fixedly connected to one inner wall of the housing, and baffles are rotatably connected to the upper surface of each mounting plate. This utility model replaces the labor intensity of manual conductivity testing of the ceramic ignition needle body, saving time and effort, reducing labor costs, and improving the testing efficiency of the ceramic ignition needle body. However, it still has the following drawbacks: Although the aforementioned automatic testing device for ceramic ignition needles replaces the labor intensity of manual conductivity testing of the ceramic ignition needle body, saving time and effort, reducing labor costs, and improving the testing efficiency of the ceramic ignition needle body, it still has the problem that it does not take into account the integrity of the internal cavity structure of the ignition needle, which can easily lead to ignition needle products that are partially qualified but fail as a whole. Summary of the Invention

[0005] The purpose of this invention is to provide an ignition needle testing device and method to solve the problem mentioned in the background art of ignition needle products that do not take into account the integrity of the internal cavity structure of the ignition needle, which easily leads to partial compliance but overall failure.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an ignition needle detection device, comprising a rotating disk, wherein a plurality of positioning frames are equally spaced on the top of the rotating disk, a connecting disk is rotatably connected to the top of the positioning frames, three adjustable rotating rollers are provided on the top of the connecting disk, a placement cylinder is installed through the interior of the connecting disk, two industrial image acquisition devices are provided above the rotating disk, one of the industrial image acquisition devices is set with an inclined structure, a lens is installed at the bottom of each industrial image acquisition device, and a ring light source is provided below each industrial image acquisition device, and the industrial image acquisition device is electrically connected to the ignition needle detection system.

[0007] Preferably, one end of each positioning frame is equipped with an installation block, and one end of each installation block is inserted into the inside of the fixing cavity. The fixing cavities are installed at equal intervals on the top of the rotating disk. Insertion cavities are opened through both outer walls of the fixing cavities, and insertion blocks are inserted into the inside of each insertion cavity.

[0008] Preferably, the mounting block has movable cavities on both outer walls, and a return spring is installed at one end of each movable cavity. The other end of the return spring is connected to one end of the plug-in block. A toggle piece is installed on the outer wall of one end of the plug-in block. The toggle piece is slidably connected inside the second cavity. A first cavity corresponding to the second cavity is opened on the outer wall of one end of the fixed cavity.

[0009] Preferably, a sliding block is installed on the outer wall of the connecting plate, and the sliding block is movably connected inside the sliding groove. The sliding groove is opened inside the top of the positioning frame. Three guide slide rails are equally spaced through the top of the connecting plate. Guide sliders are slidably connected inside the three guide slide rails. A connecting frame is installed at the top of each guide slider. A rotating roller is movably connected inside one end of the connecting frame.

[0010] Preferably, the bottom end of each guide slider is connected to the top outer wall of the transmission screw sleeve, and a connecting screw is connected through the inner side wall of the transmission screw sleeve. One end of the connecting screw is rotatably connected to the outer side wall of the placement cylinder.

[0011] Preferably, the other end of each connecting screw is equipped with a first bevel gear, the bottom end of each first bevel gear meshes with the top outer wall of a second bevel gear, the second bevel gear is installed on the top of a transmission gear, the outer outer wall of the transmission gear meshes with the outer outer wall of a drive gear, the drive gear is rotatably connected to the outer wall of the placement cylinder, and a toggle ring is installed at the bottom end of the drive gear.

[0012] Preferably, the top of the connecting plate is equipped with an installation ring, and the outer side wall of the installation ring is equipped with a number of teeth at equal intervals. The top of the positioning frame is rotatably connected to a connecting gear that meshes with the teeth on the outer side wall of the installation ring. The top of the connecting gear is connected to the output end of the motor for transmission.

[0013] Preferably, the rotating disk is rotatably connected to the top of the mounting base, and the mounting base has an mounting plate installed on its outer side wall. Two fixing brackets are installed on the top of the mounting plate. Connecting slide rails are installed on the two fixing brackets near the vertical outer wall of the rotating disk, and connecting sliders are slidably connected to the vertical outer wall of the connecting slide rails. A connecting frame is installed at one end of the connecting slider near the rotating disk. A ring light source is installed through the interior of the connecting frame, and an industrial image acquisition device is installed above the ring light source through the connecting block.

[0014] Preferably, the ignition needle detection system includes an image data preprocessing module, a single-angle image feature analysis module, an image fusion module, and a quality status determination module. The image data preprocessing module is electrically connected to the single-angle image feature analysis module and the image fusion module, and both the single-angle image feature analysis module and the image fusion module are electrically connected to the quality status determination module. The single-angle image feature analysis module includes a vertical image analysis module and a tilted image analysis module; The image data preprocessing module is used to perform image alignment and registration, as well as image enhancement and denoising. The vertical image analysis module is used to measure the size of the detected ignition needle and analyze the depth defects of the detected ignition needle. The function of the tilt image analysis module is to complete the stitching of tilt image data, obtain the unfolded diagram of the ignition needle, analyze and identify defects in the unfolded diagram, complete the defect quantification of the defect area, and finally extract the step height parameter data, thread parameter data and pitch parameter data of the side wall, and transmit the analyzed parameter data to the following: The image fusion module is used to perform feature point matching and fusion on the ignition needle, and to analyze and detect possible defect features and protrusion features through three-dimensional model analysis. The function of the quality status determination module is to use the ignition needle parameter data obtained by the single-angle image feature analysis module and the image fusion module to complete the dimensional compliance judgment, defect severity judgment and structural integrity judgment based on the standard data of the ignition needle.

[0015] The quality status determination module combines multiple dimensions such as size, defects, and structure to output a quality conclusion of qualified, reworkable, or scrapped, and generates a visual inspection report as well as the location parameter data of standard non-conforming items.

[0016] A method for testing an ignition needle includes the following workflow: S1: Ensure a unified shooting benchmark for both vertical and tilted dual-view cameras; S2: Complete dual-view image acquisition; S3: Preprocessing and registration of dual-view image parameter data are performed through the tilt image analysis module; S4: Perform image feature analysis using the single-angle image feature analysis module; S5: Multi-view fusion and 3D reconstruction are performed through the image fusion module; S6: Quality status determination is completed through the quality status determination module; S7: Data storage and conclusion output.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes dual-view image acquisition combined with multi-module collaborative detection to rapidly inspect the internal cavity structure. It can accurately capture dimensional parameters such as internal cavity diameter, depth, and coaxiality, as well as minute defects such as scratches, pores, and cracks. Furthermore, the ignition needle detection system, through image preprocessing, single-angle analysis, and three-dimensional fusion modules, links visual data with electrical parameters such as insulation resistance and ignition voltage to form a multi-dimensional quality judgment basis, completely avoiding blind spots in local detection and ensuring that the product meets all performance standards.

[0018] 2. In terms of adaptability, the positioning frame achieves quick assembly and disassembly through a reset spring and a plug-in block, avoiding the cumbersome operation of bolt fixing. Furthermore, by using a toggle ring to drive a bevel gear and a transmission screw, it can drive three sets of rotating rollers to synchronously adjust the spacing, adapting to different specifications of ignition needles with diameters of 3-8mm and lengths of 50-200mm. There is no need to replace special fixtures, which greatly reduces equipment debugging costs and adapts to the ignition needle testing needs of various scenarios such as industry. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a bottom-view structural diagram of the present invention; Figure 3 This is a schematic diagram of the combined components of the mounting block, positioning frame, connecting plate, and placement cylinder in this invention. Figure 4 This is a schematic diagram of the disassembled parts structure of the mounting block and the plug-in block in this invention; Figure 5 This is a schematic diagram of the disassembled parts structure of the connecting disc and the placement cylinder in this invention; Figure 6 This is a schematic diagram of the combined component structure of the fixed frame, connecting slide rail, connecting slider, ring light source and industrial image acquisition device in this invention. Figure 7 This is a schematic diagram of the ignition needle detection system in this invention; Figure 8 This is a schematic diagram of the workflow of the ignition needle detection method in this invention.

[0020] In the diagram: 1. Rotating disk; 2. Mounting base; 3. Mounting disk; 4. Fixed cavity; 5. First through cavity; 6. Insertion cavity; 7. Mounting block; 8. Movable cavity; 9. Return spring; 10. Insertion block; 11. Toggle piece; 12. Second through cavity; 13. Positioning frame; 14. Sliding groove; 15. Connecting plate; 16. Sliding block; 17. Guide slide rail; 18. Guide slider; 19. Connecting frame; 20. Rotating roller; 21. Transmission screw sleeve; 22. Connecting screw; 23. First bevel gear; 24. Second bevel gear; 25. Transmission gear; 26. Drive gear; 27. Placement cylinder; 28. Actuating ring; 29. ​​Mounting ring; 30. Clamping gear; 31. Connecting gear; 32. Motor; 33. Fixing frame; 34. Connecting slide rail; 35. Connecting slider; 36. Connecting frame; 37. Ring light source; 38. Connecting block; 39. Industrial image acquisition device; 40. Lens. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] Example 1 Please see Figures 1-4 This invention provides an ignition needle detection device and method, including a rotating disk 1. A plurality of fixed cavities 4 are fixedly connected at equal intervals to the top of the rotating disk 1. Insertion cavities 6 are provided through the outer walls on both sides of each fixed cavity 4. Mounting blocks 7 are inserted into one end of each fixed cavity 4. Movable cavities 8 are provided inside the outer walls on both sides of each mounting block 7. A return spring 9 is fixedly connected to one end of each movable cavity 8. An insertion block 10 is fixedly connected to one end of each return spring 9. One end of the insertion block 10 is movably connected inside the movable cavity 8 and engaged inside the insertion cavity 6. A toggle piece 11 is fixedly connected to the outer wall of one end of each insertion block 10. The toggle piece 11 is slidably connected inside a second through cavity 12, which is located at one end of the mounting block 7. The toggle piece 11 is also slidably connected inside a corresponding first through cavity 5, which is located on the outer wall of one end of the fixed cavity 4. One end of the mounting block 7 is fixedly connected to the vertical outer wall of a positioning frame 13.

[0023] In the above structure, the positioning frame 13 is installed into the fixed cavity 4 by inserting the mounting block 7. When the insertion cavity 6 and the movable cavity 8 correspond to each other, the reset spring 9 generates a reset potential energy to drive the insertion block 10 to move outward. Then, the insertion block 10 is inserted into the insertion cavity 6, and the positioning frame 13 is flexibly fixed to the top of the rotating disk 1 by the mounting block 7. The bolt-type installation method is abandoned. The positioning frame 13 and other components used for ignition needle detection are flexibly fixed to the top of the rotating disk 1 in a flexible way. This makes it easier to adjust and maintain in the later stages of the detection operation. When disassembling, the two corresponding toggle pieces 11 move relative to each other, and the insertion block 10 retracts into the movable cavity 8, so that the fixed cavity 4 and the mounting block 7 can be separated.

[0024] Please see Figures 1-4 The positioning frame 13 has a through hole on the outer wall of its horizontal top end. A sliding groove 14 is formed on the inner wall of the through hole. A sliding block 16 is slidably connected inside the sliding groove 14. The sliding block 16 is fixedly connected to the outer wall of the connecting plate 15. A placement cylinder 27 is fixedly connected through the top end of the connecting plate 15. Guide rails 17 are equally spaced through the top end of the positioning frame 13. The guide rails 17 are set with the center point of the placement cylinder 27 as the polar axis. The inner wall of the guide rails 17 is set with a "+" shaped structure. A "+" shaped guide slider 18 is slidably connected inside the guide rails 17. An "L" shaped connecting frame 19 is fixedly connected to the top end of the guide slider 18. A rotating roller 20 is rotatably connected inside the end of the connecting frame 19 near the placement cylinder 27.

[0025] In the above structure, the ignition needle to be tested is placed inside the placement cylinder 27. To ensure that the inner cavity of the placement cylinder 27 is perpendicularly aligned with the industrial image acquisition device 39, the guide slider 18 moves synchronously inside the guide rail 17, so that the connecting frame 19 and the rotating roller 20 move toward the center point of the placement cylinder 27. The ignition needle to be tested is limited by a three-point method. This method can accurately limit the detection of the ignition needle and ensure the accurate position of the inner cavity of the ignition needle.

[0026] Please see Figure 5The bottom end of the guide slider 18 is fixedly connected to the top outer wall of the transmission screw sleeve 21. The inner side wall of the transmission screw sleeve 21 is connected to the connecting screw 22. One end of the connecting screw 22 is rotatably connected to the outer side wall of the placement cylinder 27. The other end of the connecting screw 22 is fixedly connected to the first bevel gear 23. The first bevel gear 23 is arranged in a vertical structure. One end of the outer wall of the first bevel gear 23 meshes with the top outer wall of the second bevel gear 24. The second bevel gear 24 is fixedly connected to the top of the transmission gear 25. The teeth on the outer side wall of the transmission gear 25 mesh with the corresponding teeth on the outer side wall of the drive gear 26. The drive gear 26 is rotatably connected to the outer side wall of the placement cylinder 27. The bottom end of the drive gear 26 is fixedly connected to the actuating ring 28.

[0027] The above structure, based on the three-point limiting structure formed by the connecting frame 19 and the rotating roller 20, allows the operator to manually rotate the drive gear 26 by using the actuating ring 28. This causes the drive gear 26 to drive the three meshed transmission gears 25 to rotate, and the transmission gears 25 to drive the second bevel gear 24 to rotate synchronously. When the second bevel gear 24 rotates, it drives the meshed first bevel gear 23 to rotate, which in turn drives the connecting screw 22 to rotate. Because the connecting screw 22 and the transmission screw sleeve 21 form a screw transmission structure, when the connecting screw 22 rotates, the transmission screw sleeve 21 drives the guide slider 18 to slide inside the guide rail 17. This method allows the limiting structure formed by the connecting frame 19 and the rotating roller 20 to slide synchronously, ensuring the stability of the ignition needle's limiting position.

[0028] Please see Figure 1 and Figure 5 The top of the connecting plate 15 is vertically fixedly connected to an annular mounting ring 29. The outer wall of the mounting ring 29 is fixedly connected with several teeth 30 at equal intervals. The top of the positioning frame 13 is rotatably connected to a connecting gear 31. The teeth on the outer wall of the connecting gear 31 mesh with the corresponding teeth 30 fixedly connected at equal intervals on the outer wall of the mounting ring 29. The top of the connecting gear 31 is fixedly connected to the output end of the motor 32.

[0029] In the above structure, when detecting the inner cavity of the ignition needle, the motor 32 drives the connecting gear 31 to rotate. Since the connecting gear 31 meshes with the corresponding teeth 30 that are fixedly connected at equal intervals to the outer wall of the mounting ring 29, the mounting ring 29 and the connecting plate 15 are driven to rotate at a uniform speed. The connecting plate 15 is guided to rotate in the sliding groove 14 by the sliding block 16. Thus, the rotation of the connecting plate 15 drives the ignition needle placed inside the placement cylinder 27, which is fixedly connected inside, to rotate slowly, so that the industrial image acquisition device 39 can capture image data of the inner wall of the ignition needle from different positions.

[0030] The specific usage process in this embodiment is as follows: First, the positioning frame 13 is installed into the fixed cavity 4 by inserting the mounting block 7. When the insertion cavity 6 and the movable cavity 8 correspond to each other, the reset spring 9 generates a reset potential energy to drive the insertion block 10 to move outward. Then, the insertion block 10 is inserted into the insertion cavity 6, and the positioning frame 13 is flexibly fixed to the top of the rotating disk 1 by the mounting block 7. Secondly, the operator manually rotates the drive gear 26 by using the actuating ring 28. This causes the drive gear 26 to drive the three meshed transmission gears 25 to rotate. The transmission gears 25 drive the second bevel gear 24 to rotate synchronously. When the second bevel gear 24 rotates, it drives the meshed first bevel gear 23 to rotate. This causes the first bevel gear 23 to drive the connecting screw 22 to rotate. Because the connecting screw 22 and the transmission screw sleeve 21 form a screw transmission structure, when the connecting screw 22 rotates, the transmission screw sleeve 21 drives the guide slider 18 to slide inside the guide rail 17. This method allows the limiting structure formed by the connecting frame 19 and the rotating roller 20 to slide synchronously. Then, the ignition needle to be tested is placed inside the placement cylinder 27. In order to ensure that the inner cavity of the placement cylinder 27 is perpendicularly aligned with the industrial image acquisition device 39, the guide slider 18 moves synchronously inside the guide rail 17, so that the connecting frame 19 and the rotating roller 20 move toward the center point of the placement cylinder 27, and the ignition needle to be tested is limited by a three-point method. Finally, during the inspection of the ignition needle's inner cavity, the motor 32 drives the connecting gear 31 to rotate. Since the connecting gear 31 meshes with the corresponding teeth 30 that are fixedly connected at equal intervals to the outer wall of the mounting ring 29, the mounting ring 29 and the connecting plate 15 are driven to rotate at a uniform speed. The connecting plate 15 is guided to rotate in the sliding groove 14 by the sliding block 16. Thus, the rotation of the connecting plate 15 drives the ignition needle placed inside the fixedly connected placement cylinder 27 to rotate slowly, allowing the industrial image acquisition device 39 to capture image data of the inner wall of the ignition needle from different positions. In this way, the ignition needle inspection device and method are completed. It should be noted that this invention is an ignition needle detection device and method. All components are general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power components, electrical components, and the matching monitoring computer and power supply, are connected by wires. The specific connection method should refer to the working principle above and complete the electrical connection in the order of operation between each electrical component. The detailed connection method is a well-known technology in the field.

[0031] Example 2 Please see Figure 1 , Figure 6 , Figure 7 and Figure 8 This invention provides an ignition needle detection device and method, including a rotating disk 1, which is horizontally rotatably connected to the top of a mounting base 2. An output device is fixedly connected inside the mounting base 2, and the output end of the output device is fixedly connected to the bottom end of the rotating disk 1. A mounting plate 3 is fixedly connected to the outer wall of the mounting base 2. Two fixing brackets 33 are fixedly connected to the top of the mounting plate 3. Connecting slide rails 34 are fixedly connected to the vertical outer wall of each fixing bracket 33 near the rotating disk 1. Connecting sliders 35 are vertically slidably connected to the outer wall of the connecting slide rails 34, and the connecting sliders 35 have a locking mechanism. The structure is configured such that a connecting frame 36 is fixedly connected to the outer wall of the connecting slider 35. One connecting frame 36 is horizontal and the other is inclined at an angle of 5°. A ring light source 37 is fixedly connected through the top of each connecting frame 36. An industrial image acquisition device 39 is fixedly connected to the top of each connecting frame 36 via a connecting block 38. A lens 40 is installed at the acquisition end of the industrial image acquisition device 39. The industrial image acquisition device 39 is perpendicular to the ring light source 37 and is electrically connected to the ignition needle detection system.

[0032] The above structure is equipped with two sets of image acquisition devices consisting of a ring light source 37, an industrial image acquisition device 39, and a lens 40, which are used to acquire image data of the ignition needle cavity. Since one of the connecting frames 36 is set with an inclined structure, the inner wall can be captured better. At the same time, the ring light source 37 effectively improves the acquisition effect of the industrial image acquisition device 39 and the lens 40.

[0033] The ignition needle detection system includes an image data preprocessing module, a single-angle image feature analysis module, an image fusion module, and a quality status determination module. The image data preprocessing module is electrically connected to the single-angle image feature analysis module and the image fusion module, and both the single-angle image feature analysis module and the image fusion module are electrically connected to the quality status determination module.

[0034] The single-angle image feature analysis module includes a vertical image analysis module and a tilted image analysis module.

[0035] The image data preprocessing module is responsible for image alignment and registration, as well as image enhancement and denoising. Specifically, image alignment and registration involves spatial coordinate registration of the vertical front view image and the oblique side view image based on the coaxial positioning reference of the ignition needle, establishing a unified three-dimensional coordinate system to ensure that image data from different angles can be fused and analyzed under the same reference. Furthermore, the least squares method is used to fit the axis, and perspective distortion correction is performed on the oblique image to eliminate dimensional deviations caused by the shooting angle. Specifically, the image enhancement and denoising process involves equalizing and enhancing the contrast of the inner cavity edge of the vertical front view image by using Gaussian filtering to remove noise, highlighting dimensional features such as aperture and depth. For the oblique side view image, an adaptive threshold segmentation algorithm is used to separate side wall defects from the background, and morphological filtering is combined to remove reflections and shadow interference, thereby clearly presenting scratch and pore feature details.

[0036] The vertical image analysis module is used to measure the size of the detected ignition needle and analyze the depth defects of the detected ignition needle.

[0037] The method for measuring the size of the ignition needle is to extract the circular contour of the inner cavity through a sub-pixel edge detection algorithm, and then automatically calculate and obtain aperture parameter data, depth parameter data, and coaxiality parameter data, and transmit the obtained aperture parameter data, depth parameter data, and coaxiality parameter data to the quality status judgment module.

[0038] The method for analyzing the depth defects of the detected ignition needle is to identify the crack features and edge chipping features at the bottom of the inner cavity based on the gray-level gradient change, and to combine the deep learning model for defect classification and localization. The deep learning model is YOLOv8.

[0039] The function of the tilt image analysis module is to stitch together the tilt image data, obtain the unfolded image of the ignition needle, analyze and identify defects in the unfolded image, perform defect quantification of the defect area, and finally extract the step height parameter data, thread parameter data and pitch parameter data of the side wall, and transmit the analyzed parameter data to [the appropriate location].

[0040] The method for analyzing and identifying defects in the unfolded image is to use edge detection and texture analysis to obtain scratch defect features, pitting defect features, and coating peeling defect features in the unfolded image.

[0041] The image fusion module is used to perform feature point matching and fusion for the ignition needle, and to analyze and detect possible defect features and protrusion features through three-dimensional model analysis.

[0042] The feature point matching and fusion process for the ignition needle involves extracting common feature points from the vertical and tilted images, and then mapping the two-dimensional image features to three-dimensional space using a multi-view geometry algorithm to generate a three-dimensional point cloud model of the ignition needle cavity.

[0043] The function of the quality status judgment module is to use the parameter data of the ignition needle obtained by the single-angle image feature analysis module and the image fusion module to complete the judgment of dimensional conformity, defect severity and structural integrity based on the standard data of the ignition needle.

[0044] The quality status assessment module combines multiple dimensions such as size, defects, and structure to output a quality conclusion of qualified, reworkable, or scrapped, and generates a visual inspection report as well as the location parameter data of standard non-conformities.

[0045] The ignition needle testing method includes the following workflow: S1: Ensure a unified shooting benchmark for both vertical and tilted dual-view cameras; S2: Complete dual-view image acquisition; S3: Preprocessing and registration of dual-view image parameter data are performed through the tilt image analysis module; S4: Perform image feature analysis using the single-angle image feature analysis module; S5: Multi-view fusion and 3D reconstruction are performed through the image fusion module; S6: Quality status determination is completed through the quality status determination module; S7: Data storage and conclusion output.

[0046] 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. An ignition needle detection device, comprising a rotating disk (1), characterized in that: The top of the rotating disk (1) is equipped with several positioning frames (13) at equal intervals. The top of the positioning frame (13) is rotatably connected to a connecting plate (15). The top of the connecting plate (15) is provided with three adjustable rotating rollers (20). The inside of the connecting plate (15) is through-installed with a placement cylinder (27). Two industrial image acquisition devices (39) are provided above the rotating disk (1). One of the industrial image acquisition devices (39) is set with an inclined structure. The bottom of each industrial image acquisition device (39) is equipped with a lens (40). A ring light source (37) is provided below each industrial image acquisition device (39). The industrial image acquisition device (39) is electrically connected to the ignition needle detection system.

2. The ignition needle detection device according to claim 1, characterized in that: One end of each positioning frame (13) is equipped with an installation block (7), and one end of each installation block (7) is inserted into the inside of the fixed cavity (4). The fixed cavity (4) is installed at equal intervals on the top of the rotating disk (1). Both sides of the outer wall of the fixed cavity (4) are provided with insertion cavities (6), and insertion blocks (10) are inserted into the inside of each insertion cavity (6).

3. The ignition needle detection device according to claim 2, characterized in that: The mounting block (7) has movable cavities (8) on both sides of its outer wall. A return spring (9) is installed at one end of each movable cavity (8). The other end of the return spring (9) is connected to one end of the plug-in block (10). A toggle piece (11) is installed on the outer wall of one end of the plug-in block (10). The toggle piece (11) is slidably connected to the inside of the second passage cavity (12). A first passage cavity (5) corresponding to the second passage cavity (12) is opened on the outer wall of one end of the fixed cavity (4).

4. The ignition needle detection device according to claim 1, characterized in that: A sliding block (16) is installed on the outer wall of the connecting plate (15), and the sliding block (16) is movably connected to the inside of the sliding groove (14). The sliding groove (14) is opened inside the top of the positioning frame (13). Three guide slide rails (17) are equally spaced through the top of the connecting plate (15). Guide sliders (18) are slidably connected inside the three guide slide rails (17). A connecting frame (19) is installed on the top of each guide slider (18). A rotating roller (20) is movably connected inside one end of the connecting frame (19).

5. The ignition needle detection device according to claim 1, characterized in that: The bottom end of the guide slider (18) is connected to the top outer wall of the transmission screw sleeve (21). The inner side wall of the transmission screw sleeve (21) is connected to the connecting screw (22). One end of the connecting screw (22) is rotatably connected to the outer side wall of the placement cylinder (27).

6. The ignition needle detection device according to claim 5, characterized in that: The other end of each connecting screw (22) is equipped with a first bevel gear (23). The bottom end of the first bevel gear (23) meshes with the top outer wall of the second bevel gear (24). The second bevel gear (24) is installed on the top of the transmission gear (25). The outer wall of the transmission gear (25) meshes with the outer wall of the drive gear (26). The drive gear (26) is rotatably connected to the outer wall of the placement cylinder (27). The bottom end of the drive gear (26) is equipped with a toggle ring (28).

7. The ignition needle detection device according to claim 1, characterized in that: The top of the connecting plate (15) is equipped with an installation ring (29), and a number of locking teeth (30) are installed at equal intervals on the outer side wall of the installation ring (29). The top of the positioning frame (13) is rotatably connected to a connecting gear (31) that meshes with the locking teeth (30) on the outer side wall of the installation ring (29). The top of the connecting gear (31) is connected to the output end of the motor (32) for transmission.

8. The ignition needle detection device according to claim 1, characterized in that: The rotating disk (1) is rotatably connected to the top of the mounting base (2), and the mounting base (2) is equipped with a mounting disk (3) on its outer side wall. The top of the mounting disk (3) is equipped with two fixing brackets (33). The two fixing brackets (33) are equipped with connecting slide rails (34) near the vertical outer wall of the rotating disk (1), and connecting sliders (35) are slidably connected to the vertical outer wall of the connecting slide rails (34). A connecting frame (36) is installed at one end of the connecting slider (35) near the rotating disk (1). A ring light source (37) is installed through the inside of the connecting frame (36). An industrial image acquisition device (39) is installed above the ring light source (37) through a connecting block (38).

9. The ignition needle detection device and method according to claim 1, characterized in that: The ignition needle detection system includes an image data preprocessing module, a single-angle image feature analysis module, an image fusion module, and a quality status determination module. The image data preprocessing module is electrically connected to the single-angle image feature analysis module and the image fusion module, and the single-angle image feature analysis module and the image fusion module are both electrically connected to the quality status determination module. The single-angle image feature analysis module includes a vertical image analysis module and a tilted image analysis module; The image data preprocessing module is used to perform image alignment and registration, as well as image enhancement and denoising. The vertical image analysis module is used to measure the size of the detected ignition needle and analyze the depth defects of the detected ignition needle. The function of the tilt image analysis module is to complete the stitching of tilt image data, obtain the unfolded diagram of the ignition needle, analyze and identify defects in the unfolded diagram, complete the defect quantification of the defect area, and finally extract the step height parameter data, thread parameter data and pitch parameter data of the side wall, and transmit the analyzed parameter data to the following: The image fusion module is used to perform feature point matching and fusion on the ignition needle, and to analyze and detect possible defect features and protrusion features through three-dimensional model analysis. The function of the quality status determination module is to use the ignition needle parameter data obtained by the single-angle image feature analysis module and the image fusion module to complete the dimensional compliance judgment, defect severity judgment and structural integrity judgment based on the standard data of the ignition needle. The quality status determination module combines multiple dimensions such as size, defects, and structure to output a quality conclusion of qualified, reworkable, or scrapped, and generates a visual inspection report as well as the location parameter data of standard non-conforming items.

10. A method for detecting an ignition needle as described in claims 1-9, characterized in that: The workflow includes the following: S1: Ensure a unified shooting benchmark for both vertical and tilted dual-view cameras; S2: Complete dual-view image acquisition; S3: Preprocessing and registration of dual-view image parameter data are performed through the tilt image analysis module; S4: Perform image feature analysis using the single-angle image feature analysis module; S5: Multi-view fusion and 3D reconstruction are performed through the image fusion module; S6: Quality status determination is completed through the quality status determination module; S7: Data storage and conclusion output.

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