Defect detection device and defect detection system

Abstract

The present invention relates to the technical field of mobile communication antennas, and discloses a defect detection device and a defect detection system for detecting whether an antenna has defects. The defect detection device includes: a machine platform; a detection mechanism, including a mobile component arranged on the machine platform, a positioning member for installing the antenna, and a camera for collecting test images, wherein the mobile component is used to drive at least one of the positioning member and the camera to move; an electrical control mechanism, which is arranged on the machine platform and electrically connected to the mobile component; a control device is electrically connected to the detection mechanism and the electrical control mechanism, and the control device is used to import a characteristic image of the antenna, wherein the characteristic image includes target defect information of the antenna; the control device can also be used to obtain a test image collected by the camera, and compare the test image with the characteristic image to detect whether the antenna has defects. The above-mentioned defect detection device and system improve the antenna test speed and the consistency of the antenna detection process, thereby improving the accuracy of the antenna detection results and the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile communication antennas, and in particular to a defect detection device and a defect detection system. Background Art

[0002] In recent years, with the rapid development of 5G mobile communications, the demand for antennas has been growing. 5G antennas are more intelligent, miniaturized, and customized than 4G antennas. At the same time, the number of components contained in 5G antennas has increased several times compared to 4G antennas. The quality of components is crucial to the performance indicators of antennas.

[0003] At present, the industry still mainly uses manual visual inspection to inspect antennas. However, there are the following problems with manual visual inspection: First, there are dozens of common defects in antennas, and manual visual inspection is labor-intensive and easily affected by factors such as human emotions, technical level, and judgment standards. It is difficult to ensure the stability and consistency of the inspection, resulting in low accuracy of the inspection results; secondly, manual visual inspection needs to be judged based on the process documents of each component such as solder joints and rivets, which takes a long time and has low inspection efficiency; in addition, manual inspection can only record the quality inspection results of the product manually, and cannot subdivide the defect location, cannot verify the information in real time, and the test data records are scattered. Summary of the invention

[0004] The purpose of the present invention is to provide a defect detection device and a defect detection system, aiming to solve the technical problems of low detection result accuracy and low detection efficiency in the antenna detection process in the prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a defect detection device for detecting whether an antenna has defects, the defect detection device comprising:

[0006] Machine;

[0007] A detection mechanism, comprising a moving component disposed on the machine platform, a positioning member for mounting an antenna, and a camera for acquiring a test image, wherein the moving component is used to drive at least one of the positioning member and the camera to move;

[0008] An electrical control mechanism, disposed on the machine platform and electrically connected to the moving component, the electrical control mechanism being used to control the moving component;

[0009] A control device is electrically connected to the detection mechanism and the electrical control mechanism, and is used to import a characteristic image of the antenna, wherein the characteristic image includes target defect information of the antenna; the control device can also be used to obtain a test image captured by the camera, and compare the test image with the characteristic image to detect whether the antenna has defects.

[0010] The above-mentioned defect detection device can control the movement of the mobile component through an electrical control mechanism. Since the mobile component can drive at least one of the positioning member and the camera for installing the antenna to move, the camera can collect a test image of the antenna when it corresponds to the antenna. The control device automatically detects whether the antenna has defects by comparing the test image with the feature image. No manual visual inspection is required, which improves the antenna test speed and the consistency of the antenna detection process, thereby improving the accuracy and detection efficiency of the antenna detection results, and effectively improving the technical problems of low accuracy of detection results and low detection efficiency in the current antenna detection process.

[0011] In one embodiment, the machine comprises a mounting surface, the moving assembly is disposed on the mounting surface and comprises a first moving member and a second moving member, the positioning member is connected to the first moving member, and the first moving member is used to drive the positioning member to move along a first direction parallel to the mounting surface;

[0012] The camera is connected to the second moving member, and the second moving member is used to drive the camera to move along a second direction, and the second direction is parallel to the mounting surface and perpendicular to the first direction. Since the positioning member and the camera are respectively connected to the first moving member and the second moving member, and can move along the first direction and the second direction perpendicular to each other, respectively, the movement of the positioning member and the camera is independent of each other and is not affected, and the two can move flexibly in coordination so that the camera corresponds to different positions on the positioning member.

[0013] In one embodiment, the first moving member includes a first base disposed on the mounting surface and a first slider slidably connected to the first base along the first direction, and the positioning member is connected to the first slider;

[0014] The second moving member comprises a second base disposed on the mounting surface and a second slider slidably connected to the second base along the second direction, and the camera is connected to the second slider;

[0015] The second base is arranged on the side of the first base away from the mounting surface. Thus, the first moving member and the second moving member have simple structures, which are convenient for installation and maintenance, and the connection relationship between the positioning member and the first moving member, and the camera and the second moving member is simple, which is convenient for installation and replacement.

[0016] In one embodiment, the moving assembly further comprises a support member disposed on the mounting surface, the support member comprises a support base which is parallel to and spaced from the first base and a support block which is slidably connected to the support base, and the positioning member is connected to the support block and the first slider on the side facing the mounting surface. In this way, the support member and the first base can jointly provide a supporting force to the positioning member, thereby enhancing the stability of the positioning member when sliding along the first direction, thereby improving the stability of the antenna on the positioning member, and reducing the error when the camera collects the test image.

[0017] In one embodiment, the detection mechanism further includes a limiting member provided on the positioning member, and the limiting member is used to fix the antenna;

[0018] The limiting member includes a first limiting block and a second limiting block arranged at intervals, at least one of the first limiting block and the second limiting block can be movably arranged on the positioning member, and a receiving space is formed between the first limiting block and the second limiting block, and the receiving space is used to position and receive the antenna. In this way, the position of the second limiting block can be flexibly adjusted to replace the antenna and antennas of different sizes can be placed; in addition, the antenna can be stably placed on the positioning member, reducing the error of the antenna when it moves with the positioning member.

[0019] In one embodiment, the defect detection device further comprises a control element disposed on the machine platform, the control element being electrically connected to the electrical control mechanism and used to control the resetting, starting or stopping of the electrical control mechanism;

[0020] The control element includes at least one of a touch screen and a button. In this way, the inspector can control the motion state of the mobile component by controlling the electrical control mechanism at any time, which is conducive to the timely response operation of the inspector when an emergency occurs during the test.

[0021] In one embodiment, the control device includes an image importing unit, which can be used to import a characteristic image and a standard image of at least one antenna model, each standard image of the antenna model includes at least one detection point, and the antenna to be detected includes a detection position corresponding to each detection point;

[0022] The image import unit can also be used to identify the coordinate information of each of the detection points, and convert the coordinate information of each of the detection points into a coordinate system value of the moving component and a moving instruction executable by the electrical control mechanism, so that the electrical control mechanism receives the moving instruction and controls the moving component to move to the detection position;

[0023] The standard image is at least one of a CAD image, a Creo image, and a SolidWorks image. In this way, the image import unit can automatically convert the coordinate information of the detection points in the standard image of each antenna model and the coordinate system value of the mobile component, eliminating the need for manual operation of the electrical control mechanism to achieve the movement of the mobile component and improving production efficiency.

[0024] In one embodiment, the characteristic image of the antenna includes a characteristic image of each of the detection points, and the camera sequentially collects test images of a plurality of the detection positions;

[0025] The control device also includes a visual detection unit, which is used to obtain the test image collected by the camera and perform at least one of median filtering, shape matching, edge fitting, threshold segmentation, and feature extraction on the test image to compare the test image of the detection position with the feature image of the detection point and identify whether the detection position has defects. In this way, the visual detection unit can perform diversified processing and detection on the image of the detection position based on the feature image of each detection point, without being affected by factors such as manual technology and fatigue, ensuring the consistency and stability of the detection process standard, and improving the accuracy of the antenna detection results.

[0026] In one embodiment, the antenna is provided with a mark, and the mark includes the model of the antenna and the serial number information of the antenna;

[0027] The control device also includes a data recording unit, which is used to read the antenna's identifier and obtain the antenna's identification information, and bind the antenna's identification information to the antenna's detection result, and the antenna's detection result includes the detection result of each detection position. Since the identifier can identify and mark the antenna to be tested, the data recording unit can automatically record the antenna's identification information and detection results in sequence, can provide timely feedback on the detection results, and facilitate the recording and archiving of the detection results, and can also trace back product problems later.

[0028] An embodiment of the present application further proposes a defect detection system, comprising: a defect detection device as described in any of the above embodiments; and a display, wherein the display is electrically connected to the control center and is used to display the defect detection result of the antenna.

[0029] The above-mentioned defect detection system can control the movement of the mobile component through an electrical control mechanism. Since the mobile component can drive at least one of the positioning member and the camera for installing the antenna to move, the camera can collect a test image of the antenna when it corresponds to the antenna. The control device automatically detects whether the antenna has defects by comparing the test image with the feature image. No manual visual inspection is required, which improves the antenna test speed and the consistency of the antenna detection process, thereby improving the accuracy and detection efficiency of the antenna detection results, and effectively improves the current technical problems of low accuracy of detection results and low detection efficiency in the antenna detection process; in addition, the above-mentioned defect detection system can also display the antenna defect detection results in real time through a display, so that personnel can check the detection results at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A three-dimensional schematic diagram of a defect detection device provided by an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A three-dimensional schematic diagram of the defect detection device from another perspective shown;

[0033] Figure 3 for Figure 1 The module schematic diagram of the defect detection device is shown.

[0034] The meanings of the marks in the figure are:

[0035] 100. Defect detection device;

[0036] 10. Machine platform; 11. Installation surface;

[0037] 20. Moving assembly; 21. First moving member; 211. First base; 212. First slider; 213. First fixed column; 22. Second moving member; 221. Second base; 222. Second slider; 223. Second fixed column; 23. Support member; 231. Support base; 232. Support block; 233. Third fixed column;

[0038] 31. Positioning member; 32. Camera;

[0039] 40. Electrical control mechanism;

[0040] 50. Control device; 51. Image import unit; 52. Visual detection unit; 53. Data recording unit;

[0041] 60. Limiting member; 61. First limiting block; 62. Second limiting block;

[0042] 70. Control parts. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings, i.e., embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the patent. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0045] The embodiment of the present application provides a defect detection device for detecting an antenna to determine whether the antenna has a defect. In one embodiment, the antenna may be a 5G antenna, but is not limited thereto, and the antenna may also be a 4G antenna.

[0046] Also refer to Figures 1 to 3 The defect detection device 100 includes a machine platform 10, a detection mechanism, an electrical control mechanism 40 and a control device 50.

[0047] The detection mechanism includes a moving component 20 disposed on the machine platform 10 , a positioning member 31 for mounting an antenna, and a camera 32 for collecting a test image. The moving component 20 is used to drive at least one of the positioning member 31 and the camera 32 to move.

[0048] The electrical control mechanism 40 is disposed on the machine platform 10 and electrically connected to the moving component 20 . The electrical control mechanism 40 is used to control the moving component 20 .

[0049] The control device 50 is electrically connected to the detection mechanism and the electrical control mechanism 40. The control device 50 is used to import the characteristic image of the antenna, which includes the target defect information of the antenna. The control device 50 can also be used to obtain the test image captured by the camera 32 and compare the test image with the characteristic image to detect whether the antenna has defects. The target defect information of the antenna may include the target defect position and defect characteristics of the antenna.

[0050] In this embodiment, the moving assembly 20 drives the positioning member 31 and the camera 32 to move. It can be understood that in other embodiments, one of the positioning member 31 and the camera 32 can be fixed, and the other of the positioning member 31 and the camera 32 can be driven by the moving assembly 20 to move in a two-dimensional plane or a three-dimensional space, which is not limited here.

[0051] In this embodiment, the detection mechanism includes a CCD (Charge-coupled Device) component, and the CCD component includes a camera 32, and a lens, an annular light source, and a light source controller used in conjunction with the camera 32. During the antenna detection process, the lens, the annular light source, and the light source controller all remain relatively still with the camera 32. It can be understood that in other embodiments, the detection mechanism may also include a CMOS (Complementary Metal-Oxide-Semiconductor) component, which is not limited here.

[0052] In this embodiment, the electrical control mechanism 40 includes electrical components such as a PLC (Programmable Logic Controller) module, a switching power supply, and a stepper motor. The stepper motor is electrically connected to the moving assembly 20 and is used to drive the moving assembly 20 to drive at least one of the positioning member 31 and the camera 32 to move.

[0053] In this embodiment, the control device 50 includes a complete feature image database, which stores one or more feature images of multiple types of antennas. When detecting a certain type of antenna, the control device 50 directly imports multiple feature images of the antenna of this type and fully compares them with the acquired test image, which can significantly reduce the error during manual visual detection.

[0054] The above-mentioned defect detection device 100 can control the movement of the mobile component 20 through the electrical control mechanism 40. Since the mobile component 20 can drive at least one of the positioning member 31 and the camera 32 for installing the antenna to move, the camera 32 can collect the test image of the antenna when it corresponds to the antenna. The control device 50 automatically detects whether the antenna has defects by comparing the test image with the feature image. No manual visual inspection is required, which improves the antenna test speed and the consistency of the antenna detection process, thereby improving the accuracy and detection efficiency of the antenna detection results, and effectively improves the technical problems of low accuracy of detection results and low detection efficiency in the current antenna detection process.

[0055] Please also refer to Figure 1 and Figure 2 In one embodiment of the present application, the machine 10 includes a mounting surface 11, the moving assembly 20 is disposed on the mounting surface 11 and includes a first moving member 21 and a second moving member 22, the positioning member 31 is connected to the first moving member 21, and the first moving member 21 is used to drive the positioning member 31 to move along a first direction parallel to the mounting surface 11.

[0056] The camera 32 is connected to the second moving member 22, and the second moving member 22 is used to drive the camera 32 to move along the second direction, which is parallel to the mounting surface 11 and perpendicular to the first direction. Since the positioning member 31 and the camera 32 are respectively connected to the first moving member 21 and the second moving member 22, and can move along the perpendicular first direction and the second direction respectively, the movement of the positioning member 31 and the camera 32 is independent of each other and is not affected, and the two can move flexibly in coordination so that the camera 32 corresponds to different positions on the positioning member 31.

[0057] In this embodiment, the machine 10 includes a steel frame and a mounting surface 11 disposed on the steel frame, the steel frame includes a bottom plate, an electrical mounting plate and a power switch, and the first moving member 21 and the second moving member 22 are both fixedly disposed on the top of the mounting surface 11. It can be understood that in other embodiments, the first moving member 21 and the second moving member 22 can also be detachably connected to the top of the mounting surface 11.

[0058] In this embodiment, the positioning member 31 and the camera 32 move along a first direction (in this embodiment, the X direction) and a second direction (in this embodiment, the Y direction, and the Y direction is perpendicular to the X direction), respectively, and the moving directions of the two are perpendicular. It can be understood that in other embodiments, the angle between the first direction and the second direction can also be other angles, which is not limited here.

[0059] It can be understood that in other embodiments of the present application, one of the positioning member 31 and the camera 32 is fixed on the mounting surface 11, and the other of the positioning member 31 and the camera 32 can be driven by the first movable member 21 and the second movable member 22 to achieve movement in the first direction and the second direction, thereby achieving movement in a two-dimensional plane, which is not limited here.

[0060] Please also refer to Figure 1 and Figure 2 In one embodiment of the present application, the first movable member 21 includes a first base 211 disposed on the mounting surface 11 and a first slider 212 slidably connected to the first base 211 along a first direction, and the positioning member 31 is connected to the first slider 212 and can slide with the first slider 212.

[0061] The second moving member 22 includes a second base 221 disposed on the mounting surface 11 and a second slider 222 slidably connected to the second base 221 along a second direction. The camera 32 is connected to the second slider 222 and can slide along with the second slider 222 .

[0062] The second base 221 is arranged on the side of the first base 211 away from the mounting surface 11. In this way, the structure of the first moving member 21 and the second moving member 22 is simple, which is convenient for installation and maintenance, and the connection relationship between the positioning member 31 and the first moving member 21, and the camera 32 and the second moving member 22 is simple, which is convenient for installation and replacement.

[0063] In the present embodiment, the first moving member 21 further comprises two first fixing posts 213 which are arranged at intervals and fixedly connected to the top of the mounting surface 11, and two first fixing posts 213 are connected to the two ends of the first base 211. Among them, the first base 211 is provided with a first slide rail extending along the first direction, and the first slider 212 is slidably connected to the first slide rail and can reciprocate relative to the first base 211 along the first direction under the action of the driving motor. It can be understood that in other embodiments, the specific structure of the first moving member 21 can also be other, which is not limited here.

[0064] In the present embodiment, the second moving member 22 also includes two second fixing posts 223 that are spaced and fixedly connected to the top of the mounting surface 11, and two second fixing posts 223 are connected to the two ends of the second base 221. Wherein, the second base 221 is provided with a second slide rail extending along the second direction, and the second slider 222 is slidably connected to the second slide rail, and can reciprocate relative to the second base 221 along the second direction under the action of the drive motor. In addition, the second slider 222 is provided with a third slide rail extending along the third direction perpendicular to the mounting surface 11, and the third slider is connected to the third slide rail, and can realize movement along the third direction under the manual adjustment of the detection personnel. Wherein, the camera 32 is fixedly connected to the third slider. It can be understood that when the detection personnel do not perform manual adjustment, the third slider and the second slider 222 remain relatively static. It can be understood that in other embodiments, the specific structure of the second moving member 22 can also be other, which is not limited here.

[0065] It can be understood that in this embodiment, the height of the second fixing column 223 along the vertical direction is greater than the height of the first fixing column 213 along the vertical direction.

[0066] Please also refer to Figure 1 and Figure 2 In one embodiment of the present application, the mobile assembly 20 further includes a support member 23 disposed on the mounting surface 11, the support member 23 includes a support base 231 parallel to and spaced from the first base 211 and a support block 232 slidably connected to the support base 231, and the side of the positioning member 31 facing the mounting surface 11 is connected to the support block 232 and the first slider 212. In this way, the support member 23 can provide support force to the positioning member 31 together with the first base 211, thereby enhancing the stability of the positioning member 31 when sliding along the first direction, thereby improving the stability of the antenna located on the positioning member 31, and reducing the error when the camera 32 collects the test image.

[0067] In this embodiment, the number of support bases 231 is two, and the support member 23 also includes a third fixing column 233 connected to the support base 231. The two ends of each support base 231 are respectively connected to two third fixing columns 233 that are spaced and fixedly connected to the top of the mounting surface 11. Among them, the extension direction of the support base 231 is the first direction, and a connecting hole is provided on the support block 232. The support block 232 is sleeved on the support base 231 through the connecting hole, and can reciprocate relative to the support base 231 along the first direction under the action of the positioning member 31. Preferably, the support base 231 is cylindrical. It can be understood that in other embodiments, the number and specific structure of the support base 231 can also be other, which is not limited here.

[0068] It can be understood that in other embodiments, the support member 23 may also be omitted, which is not limited here.

[0069] Please also refer to Figure 1 and Figure 2 In one embodiment of the present application, the detection mechanism further includes a limiting member 60 disposed on the positioning member 31, and the limiting member 60 is used to fix the antenna.

[0070] The stopper 60 includes a first stopper block 61 and a second stopper block 62 which are arranged at intervals. At least one of the first stopper block 61 and the second stopper block 62 can be movably arranged on the positioning member 31. A receiving space is formed between the first stopper block 61 and the second stopper block 62. The receiving space is used to position and receive the antenna. In this way, the position of the first stopper block 61 and / or the second stopper block 62 can be flexibly adjusted to replace the antenna and to place antennas of different sizes. In addition, the antenna can be stably placed on the positioning member 31, reducing the error of the antenna when it moves with the positioning member 31.

[0071] In the present embodiment, the positioning member 31 is a square positioning panel, and a plurality of through holes are provided on the positioning member 31. The limiting member 60 includes a plurality of first limiting blocks 61 and a plurality of second limiting blocks 62. Among them, all the first limiting blocks 61 are respectively fixedly arranged on the adjacent two sides of the positioning member 31; the second limiting blocks 62 are arranged on the top surface of the positioning member 31, and each second limiting block 62 is L-shaped, one side of which is detachably connected to the positioning member 31 through a through hole, and the other side forms a receiving space together with the first limiting block 61 and other second limiting blocks 62. When installing the antenna, the antenna is firstly abutted against the first limiting block 61, and then the second limiting block 62 is connected to different through holes to adjust the position of the second limiting block 62, thereby fixing the position of the antenna. It can be understood that in other embodiments, the number and installation position of the first limiting block 61 and the second limiting block 62 can also be other, which is not limited here.

[0072] It can be understood that in other embodiments, both the first limiting block 61 and the second limiting block 62 can be movably connected to the positioning member 31 , which is not limited here.

[0073] In this embodiment, the second limit block 62 is fixed to the positioning member 31 by screws. It can be understood that in other embodiments, the connection can also be performed in other detachable ways, which is not limited here.

[0074] Please also refer to Figures 1 to 3 In one embodiment of the present application, the defect detection device 100 also includes a control component 70 disposed on the machine platform 10, and the control component 70 is electrically connected to the electrical control mechanism 40 for controlling the resetting, starting or stopping of the electrical control mechanism 40.

[0075] The control member 70 includes at least one of a touch screen and a button. In this way, the inspector can control the motion state of the moving component 20 by controlling the electrical control mechanism 40 at any time, which is conducive to the timely response operation of the inspector when an emergency occurs during the test.

[0076] In this embodiment, the control member 70 is a touch screen, and the touch screen displays emergency stop, stop, start, and reset control buttons. At the same time, in order to more intuitively observe the state of the electrical control mechanism 40, the control member 70 may also include a three-color light that can display red, yellow, and green, wherein red represents an emergency stop, indicating that a serious fault occurs in the operation of the electrical control mechanism 40; yellow represents a warning, indicating that a general problem occurs in the operation of the electrical control mechanism 40; and green represents normal, indicating that the electrical control mechanism 40 operates normally. It can be understood that in other embodiments, the control member 70 may also be a plurality of control buttons provided on the mounting surface 11, which is not limited here.

[0077] It can be understood that in other embodiments, the three-color light can also be omitted, which is not limited here.

[0078] In one embodiment of the present application, the control device 50 includes an image importing unit 51, which can be used to import a characteristic image and a standard image of at least one antenna model, wherein the standard image of each antenna model includes at least one detection point, and the antenna to be detected includes a detection position corresponding to each detection point.

[0079] The image import unit 51 can also be used to identify the coordinate information of each detection point, and convert the coordinate information of each detection point into a coordinate system value of the mobile component 20 and a movement instruction executable by the electrical control mechanism 40, so that the electrical control mechanism 40 receives the movement instruction and controls the mobile component 20 to move to the detection position;

[0080] The standard image is at least one of a CAD image, a Creo image, and a SolidWorks image. In this way, the image import unit 51 can automatically convert the coordinate information of the detection points in the standard image of each antenna model and the coordinate system value of the moving component 20, eliminating the need for manual operation of the electrical control mechanism 40 to achieve the movement of the moving component 20, thereby improving production efficiency.

[0081] In this embodiment, the standard image is a CAD image, and the mobile component 20 forms a two-dimensional coordinate system along the first direction and the second direction. The coordinate information of each detection point is converted into the coordinate system value of the mobile component 20 according to the following principles:

[0082] 1. When the coordinates of the mobile component 20 and the CAD coordinates are in the same direction, two sets of corresponding points P1, C1, P2, and C2 are taken on the two coordinate systems respectively. Among them, P1 (P1x, P1y) and P2 (P2x, P2y) are two points on the mobile component 20, and C1 (C1x, C1y) and C2 (C2x, C2y) are two points on the CAD image, and they correspond to the points P1 and P2 on the mobile component 20 respectively.

[0083] Calculate the slopes k1 and k2 of the two straight lines where points P1 and P2, and points C1 and C2 are located respectively:

[0084]

[0085] Calculate the angle:

[0086]

[0087] Calculate the offset distance:

[0088]

[0089] Substitute the angle and offset distance into the following formula:

[0090] x1=x2cosθ-y2sinθ+x Formula 1

[0091] y1=x2sinθ-y2cosθ+y Formula 2

[0092] Substituting the remaining points (x2, y2) on the CAD into the above formulas 1 and 2 can determine their corresponding moving target coordinates (x1, y1).

[0093] 2. When the coordinates of the mobile component 20 and the CAD coordinates are inconsistent, take three groups of corresponding points P1, C1, P2, C2, P3, and C3, where P1, P2, and P3 are three points on the mobile component 20; C1, C2, and C3 are three points on the CAD, and correspond to the points P1, P2, and P3 on the mobile component 20 respectively, and substitute them into the following formula to calculate T.

[0094] Need to ask for matrix

[0095] Multiply the remaining points on the CAD by T in turn to obtain the corresponding moving target coordinates.

[0096] In one embodiment of the present application, the characteristic image of the antenna includes the characteristic image of each detection point, and the camera 32 collects test images of multiple detection positions in sequence.

[0097] The control device 50 also includes a visual detection unit 52, which is used to obtain the test image of the detection position collected by the camera 32, and perform at least one of median filtering, shape matching, edge fitting, threshold segmentation, and feature extraction on the test image of the test position to compare the test image of the detection position with the feature image of the detection point, and identify whether the detection position has defects. In this way, the visual detection unit 52 can perform diversified processing and detection on the image of the detection position based on the feature image of each detection point, without being affected by factors such as manual technology and fatigue, ensuring the consistency and stability of the detection process standard, and improving the accuracy of the antenna detection result.

[0098] In this embodiment, the number of detection points on each antenna ranges from 60 to 100. It can be understood that in other embodiments, the number of detection points can also be set arbitrarily, and is not limited here.

[0099] In this embodiment, the visual inspection unit 52 performs all the processes including median filtering, shape matching, edge fitting, threshold segmentation, and feature extraction on the test image of the inspection position to extract features in the test image and further identify whether the inspection position has defects.

[0100] In one embodiment of the present application, an identification is provided on the antenna, and the identification includes the model and number information of the antenna.

[0101] The control device 50 also includes a data recording unit 53, which is used to read the antenna's identifier to obtain the antenna's identification information, and bind the antenna's identification information to the antenna's test results, which include the test results of each test position. Since the identifier can identify and mark the antenna to be tested, the data recording unit 53 can automatically record the antenna's identification information and test results in sequence, can provide timely feedback on the test results, and facilitate the recording and archiving of the test results, and can also trace back product problems later.

[0102] In this embodiment, the identifier is a barcode, which is a unique number of the antenna product to be tested. It can be understood that the identifier content of each antenna is not exactly the same, so as to distinguish the antennas to be tested and to be used for the statistics of subsequent test results. In addition, since the antenna identifier includes its model, the visual inspection unit 52 can directly read the characteristic image of the inspection point included in the antenna of this model automatically according to the model to perform defect detection, thereby improving the consistency of product measurement standards and the stability of the test process.

[0103] In this embodiment, the data recording unit 53 can also record the work number of the tester, the test results of each test point, the test time and other information, and support saving as local files such as csv / excel and uploading to the enterprise production management system. The data recording unit 53 marks the defect details and location information on the CAD drawing, where yellow, red and green are used to represent the antenna product to be inspected, unqualified and qualified, respectively, and saves the CAD drawing locally and in the production management system. It can be understood that in other embodiments, text information such as to be inspected, unqualified, qualified, etc. can also be used to directly indicate the test results, but it is not limited to this.

[0104] The embodiment of the present application also provides a defect detection system, comprising: a defect detection device 100 as in any of the above embodiments; and a display, the display being electrically connected to the control device 50 and used to display the defect detection result of the antenna. The display (not shown in the figure) can display the defect detection result of the antenna in real time, so that personnel can check the detection result at any time.

[0105] In one embodiment, the use process of the above defect detection system is as follows:

[0106] Step 1: Turn on the power, click the reset button on the control unit 70, and wait for the reset action to complete.

[0107] Step 2: After the reset is completed, click the run button on the control component 70 to start the electrical control mechanism 40 and start the control device 50 at the same time.

[0108] Step 3: If it is a new model 5G antenna, it is necessary to adjust the stopper 60 first, and then place it on the positioning member 31. At the same time, the control device 50 imports the characteristic image and standard image of the antenna of this model. If it is not a new model antenna, go directly to the next step.

[0109] Step 4: The control device 50 reads the identification on the antenna through the identification reading device, which is convenient for recording detection data, saving abnormal pictures, tracing the production process, etc. When the test starts, the control device 50 communicates with the electrical control mechanism 40 through the serial port protocol to drive the mobile component 20 to work. After reaching the detection position, the control device 50 communicates with the CCD component through the TCP protocol and collects the test image through the camera 32.

[0110] Step 5: The control device 50 performs defect judgment based on the collected test image and records the detection result.

[0111] Step 6: After the test is completed, unload the material and repeat steps 3 to 5.

[0112] The above-mentioned defect detection system can control the movement of the mobile component 20 through the electrical control mechanism 40. Since the mobile component 20 can drive at least one of the positioning member 31 and the camera 32 for installing the antenna to move, the camera 32 can collect the test image of the antenna when it corresponds to the antenna. The control device 50 automatically detects whether the antenna has defects by comparing the test image with the feature image. No manual visual inspection is required, which improves the antenna test speed and the consistency of the antenna detection process, thereby improving the accuracy and detection efficiency of the antenna detection results, and effectively improves the technical problems of low accuracy of detection results and low detection efficiency in the current antenna detection process; in addition, the above-mentioned defect detection system can also display the defect detection results of the antenna in real time through the display, so that personnel can check the detection results at any time.

[0113] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A defect detection device for detecting whether an antenna has defects, characterized in that: The defect detection device comprises: Machine; The detection mechanism comprises a moving component arranged on the machine platform, a positioning member for mounting an antenna, and a camera for collecting a test image, wherein the moving component is used to drive the positioning member and the camera to move; An electrical control mechanism, disposed on the machine platform and electrically connected to the moving component, the electrical control mechanism being used to control the moving component; a control device, electrically connected to the detection mechanism and the electrical control mechanism, the control device being used to import a characteristic image of the antenna, the characteristic image including target defect information of the antenna; the control device can also be used to obtain a test image captured by the camera, and compare the test image with the characteristic image to detect whether the antenna has a defect; The control device includes an image importing unit, which can be used to import a characteristic image and a standard image of at least one antenna model, each standard image of the antenna model includes at least one detection point, and the antenna to be detected includes a detection position corresponding to each detection point; The image import unit can also be used to identify the coordinate information of each of the detection points, and convert the coordinate information of each of the detection points into a coordinate system value of the mobile component and a movement instruction executable by the electrical control mechanism, so that the electrical control mechanism receives the movement instruction and controls the mobile component to move to the detection position.

2. The defect detection device according to claim 1, characterized in that: The machine platform comprises a mounting surface, the moving assembly is arranged on the mounting surface and comprises a first moving member and a second moving member, the positioning member is connected to the first moving member, and the first moving member is used to drive the positioning member to move along a first direction parallel to the mounting surface; The camera is connected to the second moving member, and the second moving member is used to drive the camera to move along a second direction, and the second direction is parallel to the installation surface and perpendicular to the first direction.

3. The defect detection device according to claim 2, characterized in that: The first moving member includes a first base disposed on the mounting surface and a first slider slidably connected to the first base along the first direction, and the positioning member is connected to the first slider; The second moving member comprises a second base disposed on the mounting surface and a second slider slidably connected to the second base along the second direction, and the camera is connected to the second slider; Wherein, the second base is arranged on a side of the first base away from the installation surface.

4. The defect detection device according to claim 3, characterized in that: The moving assembly also includes a support member arranged on the mounting surface, the support member includes a support base parallel to and spaced apart from the first base and a support block slidably connected to the support base, and the positioning member is connected to the support block and the first slider on the side facing the mounting surface.

5. The defect detection device according to claim 1, characterized in that: The detection mechanism further includes a limiting member provided on the positioning member, and the limiting member is used to fix the antenna; The limiting member includes a first limiting block and a second limiting block which are spaced apart from each other. At least one of the first limiting block and the second limiting block can be movably disposed on the positioning member. An accommodating space is formed between the first limiting block and the second limiting block, and the accommodating space is used to position and accommodate the antenna.

6. The defect detection device according to claim 1, characterized in that: The defect detection device further comprises a control element disposed on the machine platform, the control element being electrically connected to the electrical control mechanism and used for controlling the resetting, starting or stopping of the electrical control mechanism; The control element includes at least one of a touch screen and a button.

7. The defect detection device according to claim 1, characterized in that: The standard image is at least one of a CAD image, a Creo image, and a SolidWorks image.

8. The defect detection device according to claim 7, characterized in that: The characteristic image of the antenna includes a characteristic image of each of the detection points, and the camera sequentially collects test images of a plurality of the detection positions; The control device also includes a visual detection unit, which is used to obtain the test image captured by the camera and perform at least one of median filtering, shape matching, edge fitting, threshold segmentation, and feature extraction on the test image to compare the test image of the detection position with the feature image of the detection point and identify whether the detection position has defects.

9. The defect detection device according to claim 8, characterized in that: The antenna is provided with a mark, the mark carries the identification information of the antenna, and the identification information includes the model and number information of the antenna; The control device also includes a data recording unit, which is used to read the antenna's identification to obtain the antenna's identification information and bind the antenna's identification information to the antenna's detection result, where the antenna's detection result includes the detection result of each detection position.

10. A defect detection system, characterized in that: The defect detection system comprises: The defect detection device according to any one of claims 1 to 9; and A display is electrically connected to the control device and is used to display the defect detection result of the antenna.

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