Test method for detecting riveting stability of connector in server

Abstract

The invention discloses a test method for detecting riveting stability of a connector in a server. The test method comprises the following steps: uniformly coloring and airing a plugging end of the connector; fixing the connector on a test operation table, carrying out primary shooting on the connector, and recording an initial image; carrying out a plugging test on the connector and fixing the connector on the test operation table again so as to carry out secondary shooting and record an actual image; the image processing system performs difference comparison on the two images and outputs a friction distance, a friction area and a maximum color difference value; and comparing the friction distance, the friction area and the maximum color difference value of each test area with a preset standard threshold value of the riveting stability of the connector one by one, and judging whether the riveting stability of the connector in each test area reaches the standard or not. According to the method and the device, the problems of many challenges including limited test range, insufficient measurement precision, single test index and low test efficiency when the riveting stability of the connector is tested in the prior art are solved.

Description

Technical Field

[0001] This application relates to the technical field of the riveting stability test of connectors, and particularly to a test method for detecting the riveting stability of connectors in servers. Background Art

[0002] In the field of server manufacturing, the riveting stability of connectors is one of the key factors to ensure data transmission efficiency and system reliability. The existing test methods, such as the test of the friction distance of connectors with a gold finger structure, can only evaluate the straight-plate gold finger connectors. Their limitations are as follows:

[0003] 1. Limited test scope: The existing technology is only applicable to connectors with a straight-plate gold finger structure. For other connectors with special-shaped gold finger structures or non-gold finger structures, such as high-density and high-speed transmission interfaces, effective testing cannot be carried out. This limits the widespread application of the test method, especially in the fields of high-performance computing and data centers, where the connector structures used are more complex and have higher requirements for riveting stability.

[0004] 2. Insufficient measurement accuracy: The existing friction distance test relies on manually reading the measurement results of a vernier caliper. This manual operation has a large subjective deviation, resulting in limited accuracy of the measurement data. Especially in micron-level precision measurements, even a small deviation may affect the reliability of the test results and cannot meet the requirements of modern servers for high-precision testing.

[0005] 3. Single test index: The riveting stability of the connectors in the existing technology only considers the friction distance. This single test standard cannot comprehensively reflect the actual working state of the connectors, may lead to incorrect evaluation results, and affect the overall performance and stability of the servers.

[0006] 4. Low test efficiency: The existing test process is cumbersome and requires multiple manual operations, including coloring, plugging and unplugging, and measurement. This not only consumes time but also easily introduces human errors, reducing the test efficiency and accuracy. Summary of the Invention

[0007] This application provides a test method for detecting the riveting stability of connectors in servers to at least solve the many challenges faced in testing the riveting stability of connectors in servers in related technologies, including the limitations of the test scope, the insufficiency of the measurement accuracy, the singularity of the test index, and the low test efficiency.

[0008] The present application provides a test method for detecting the riveting stability of connectors in a server, including uniformly coloring the plug-and-play end of the connector with a coloring agent and drying it to completely cure the coloring layer; fixing the connector that has been colored and dried on the test operation table through a fixing fixture, adjusting the first parameter of the camera to a first preset parameter, and adjusting the second parameter of the light source to a second preset parameter, taking a first shot of the connector and recording the initial image of the connector; performing a plug-and-play test on the connector that has completed the first shot, inserting the plug-and-play end into the mating end on the server and then pulling it out, visually observing whether obvious friction marks are generated on the surface of the plug-and-play end; fixing the connector that has completed the plug-and-play operation on the test operation table again through the fixing fixture, taking a second shot of the connector and recording the actual image of the connector; importing the initial image and the actual image into an image processing system for difference comparison, manually selecting at least three test areas, and the image processing system calculating and outputting the friction distance, friction area, and maximum color difference corresponding to each test area according to the difference between the initial image and the actual image; comparing the friction distance, friction area, and maximum color difference of each test area with the standard thresholds of the preset connector riveting stability one by one to determine whether the riveting stability of the connectors in each test area meets the standard.

[0009] In an exemplary embodiment, the thickness of the coloring layer does not exceed 0.1 mm.

[0010] In an exemplary embodiment, during the second shot of the connector that has completed the plug-and-play operation, the placement position of the connector, the first parameter of the camera, and the second parameter of the light source are all kept consistent with those during the first shot.

[0011] In an exemplary embodiment, the first parameter includes at least the shooting angle and the position of the camera.

[0012] In an exemplary embodiment, the second parameter includes at least the brightness and the position of the light source.

[0013] In an exemplary embodiment, the manually selected test areas include at least the two end positions of the plug-and-play end in the length direction of the connector and the middle position of the plug-and-play end in the length direction of the connector.

[0014] In an exemplary embodiment, the calculation method of the friction distance includes dividing the test area into grids and setting the friction process direction of the connector as the X-axis direction; comparing the difference points A and B in the test area through pixel differences and marking the pixel coordinates of the difference points A and B as A(x1, y1) and B(x2, y2) respectively, and defining the absolute distance between the difference points A and B in the X-axis direction as the friction distance D x =|X2 - X1|.

[0015] In an exemplary embodiment, the method for calculating the maximum color difference includes obtaining the RGB values of each pixel in the test area; then, the color difference of the same pixel of the pluggable end before and after plugging and unplugging is: , where (R1, G1, B1) are the RGB values of the pixel extracted from the first shot before the plugging and unplugging test, and (R2, G2, B2) are the RGB values of the same pixel extracted from the second shot after the plugging and unplugging test; then, the maximum color difference output in the test area is ΔE = MAX(ΔE1, ΔE2, ΔE3 ……, ΔE i ).

[0016] In an exemplary embodiment, during the process of pre-coloring the pluggable end of the connector, the pluggable end is completely immersed in an erasable coloring agent, and the pluggable end is naturally dried in a dust-free environment.

[0017] In an exemplary embodiment, determining whether the riveting stability of the connectors in each test area meets the standard includes: if the friction distance, friction area, and maximum color difference in the same test area are all greater than the corresponding standard thresholds, it is determined that the riveting stability of the test area meets the standard; if the riveting stability of all the selected test areas of the same connector meets the standard, it is determined that the riveting stability of the connector meets the standard.

[0018] Through the present application, a test method for detecting the riveting stability of connectors in a server is provided, including uniformly coloring the pluggable end of the connector with a coloring agent and drying it to completely cure the coloring layer; fixing the connector that has been colored and dried on the test operation table through a fixing fixture, adjusting the first parameter of the camera to a first preset parameter, and adjusting the second parameter of the light source to a second preset parameter, taking a first shot of the connector and recording the initial image of the connector; performing a plugging and unplugging test on the connector after the first shot, inserting the pluggable end into the mating end on the server and then pulling it out, visually observing whether obvious friction marks are generated on the surface of the pluggable end; fixing the connector that has completed the plugging and unplugging operation on the test operation table again through the fixing fixture, taking a second shot of the connector and recording the actual image of the connector; importing the initial image and the actual image into an image processing system for difference comparison, manually selecting at least three test areas, and the image processing system calculates and outputs the corresponding friction distance, friction area, and maximum color difference of each test area according to the difference between the initial image and the actual image; comparing the friction distance, friction area, and maximum color difference of each test area with the preset standard thresholds of the connector riveting stability one by one to determine whether the riveting stability of the connectors in each test area meets the standard.

[0019] Based on the first shooting and the second shooting respectively carried out before and after plugging and unplugging, the difference between the initial image and the actual image is calculated through an image processing system, so as to output the friction distance, friction area and maximum color difference corresponding to each test area. The change magnitude of the color difference can form a judgment basis for detecting the pressing force of the connector. Thus, in combination with the friction distance, friction area and pressing force, the riveting stability of the plugging and unplugging ends of the connector can be effectively tested before and after plugging and unplugging. The test method of the present application is applicable to most connectors, has strong versatility, greatly improves the accuracy and reliability of the test method, and makes the key quantifiable indicators of the riveting stability of the connector be the friction distance, friction area and maximum color difference (i.e., the intuitive detection of the pressing force), solving the problems of many challenges faced in testing the riveting stability of connectors in the existing technology, including the limitation of the test range, the lack of measurement accuracy, the single test index and the low test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic flow chart of a test method provided by an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram for dividing a grid in a selected test area of the present application to calculate the absolute distance between difference point A and difference point B in the X-axis direction;

[0023] Figure 3 It is a schematic diagram of the preferred position of the test area of the plugging and unplugging end of the connector of the present application.

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 10. Connector; 11. Test area; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the protection scope of the present application.

[0027] It should be noted that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. The terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. The terms "parallel", "perpendicular", and "equal" include the described situations and situations similar to the described situations, and the range of the similar situations is within the acceptable deviation range, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurements being discussed and the errors associated with the measurements of specific quantities (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and approximate parallel, and the acceptable deviation range of approximate parallel can be, for example, within 5° deviation; "perpendicular" includes absolute perpendicular and approximate perpendicular, and the acceptable deviation range of approximate perpendicular can also be, for example, within 5° deviation. "Equal" includes absolute equality and approximate equality, and the acceptable deviation range of approximate equality can be, for example, that the difference between the two equal ones is less than or equal to 5% of either one. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0028] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0029] An embodiment of the present application provides a test method for detecting the riveting stability of connectors in a server. In combination with the working principle of the test method for detecting the riveting stability of connectors in a server, the device will be described in detail (technical terms involved must be explained).

[0030] Such as Figure 1As shown in the figure, the test method for detecting the riveting stability of the connector 10 in the server includes evenly coloring the plug-in end of the connector 10 with a coloring agent and drying it to completely cure the coloring layer; fixing the connector 10 that has been colored and dried on the test operation table through a fixing fixture, adjusting the first parameter of the camera to a first preset parameter, and adjusting the second parameter of the light source to a second preset parameter, taking a first shot of the connector 10 and recording the initial image of the connector 10; performing a plugging and unplugging test on the connector 10 that has completed the first shot, by inserting the plug-in end into the mating end on the server and then pulling it out, visually observing whether obvious friction marks are generated on the surface of the plug-in end; fixing the connector 10 that has completed the plugging and unplugging operation on the test operation table again through the fixing fixture, taking a second shot of the connector 10 and recording the actual image of the connector 10; importing the initial image and the actual image into an image processing system for difference comparison, manually selecting at least three test areas 11, and the image processing system calculates and outputs the friction distance, friction area, and maximum color difference corresponding to each test area 11 according to the difference between the initial image and the actual image; comparing the friction distance, friction area, and maximum color difference of each test area 11 with the standard threshold of the riveting stability of the preset connector 10 one by one to determine whether the riveting stability of the connector 10 in each test area 11 meets the standard.

[0031] According to the first shot and the second shot taken before and after plugging and unplugging respectively, the image processing system calculates the difference between the initial image and the actual image, so as to output the friction distance, friction area, and maximum color difference corresponding to each test area 11. The magnitude of the change in color difference can form a basis for judging the pressing force of the connector 10. Therefore, in combination with the friction distance, friction area, and pressing force, an effective test of the riveting stability of the plug-in end of the connector 10 before and after plugging and unplugging can be carried out. The test method of the present application is applicable to most connectors 10, has strong versatility, greatly improves the accuracy and reliability of the test method, and makes the key quantifiable indicators of the riveting stability of the connector 10 be the friction distance, friction area, and maximum color difference (that is, the intuitive detection of the pressing force), solving the problems faced in testing the riveting stability of the connector 10 in the server in the prior art, including limitations in the test scope, insufficient measurement accuracy, single test index, and low test efficiency.

[0032] It should be noted that the plug-in and unplugging ends of the above-mentioned connector are male contact parts, and the female part is located on the server; the fixed fixture is a fixed fixture for the sample to be tested, which is used to stably fix the position of the male contact part of the connector; the coloring agent is stored in a container that can hold liquid, which is easy to hold the coloring liquid and pre-treat and color the male contact part of the connector; the camera is a high-resolution industrial camera, which is used to take images of the connector terminals. The industrial camera is built-in or externally connected with an angle adjustment mechanism; the light source provides sufficient lighting environment for the industrial camera to take pictures; the image processing system is used to receive the image data output by the industrial camera and output the processing result.

[0033] Furthermore, the female part of the connector remains installed on the original structure of the server. The principle of this design is to simulate the connection state in the real working environment. By performing plugging and unplugging tests in the server structure, the riveting stability of the connector in actual use can be evaluated more accurately, providing a practical reference for the maintenance and upgrade of the server.

[0034] It should be noted that the structural parts involved in the above-mentioned test method are all structural parts of the test system. The modular design of the test system enables the test system to adapt to the connectors in different types of servers, improving the flexibility and application range of detection. Through the fixed fixture and the adjustable industrial camera, the stability of the connector and the accuracy of image acquisition during the test are ensured. The introduction of the light source further optimizes the image quality, facilitating subsequent image processing and analysis. The intelligent analysis of the image processing system can quickly and accurately identify the friction marks and color difference changes of the connector, thereby realizing the automatic detection of riveting stability, greatly improving the test efficiency and accuracy.

[0035] It should be noted that in this application, the thickness of the coloring layer does not exceed 0.1 mm. In this way, when pre-treating the plug-in and unplugging ends of the connector, the influence of the coloring agent on the male contact part of the connector is considered. By controlling the thickness of the coloring layer, both the comparison effect of subsequent image processing is ensured, and the possible influence of an overly thick coloring layer on the connector itself is avoided, ensuring the reliability of the test and the integrity of the connector.

[0036] It should be noted that in this application, during the second shooting of the connector 10 after the plugging and unplugging operation is completed, the placement position of the connector 10, the first parameters of the camera, and the second parameters of the light source are all the same as those in the first shooting process. In this way, when the image processing system processes the image data, the placement position of the connector, the brightness of the light source, the fixed position of the camera, and the set parameters are kept consistent. The implementation of the consistency principle is to eliminate the influence of external factors on the test results. Through standardized test conditions, the comparability and repeatability of the image processing results are ensured, which is crucial for establishing a unified test standard and evaluation system.

[0037] In some embodiments, the first parameter includes at least the shooting angle of the camera and the position of the camera.

[0038] Further, the test operation table includes a telescopically adjustable operating rod, which is connected to the camera and used to adjust the position of the industrial camera. The design of the telescopically adjustable operating rod takes into account the sizes and shapes of different connectors. By flexibly adjusting the position of the camera, the best angle and field of view for image acquisition are ensured, improving the image quality and measurement accuracy.

[0039] In some embodiments, the second parameter includes at least the brightness of the light source and the position of the light source.

[0040] As Figure 3 shown, the manually selected test area 11 includes at least the two end positions of the insertion and extraction end in the length direction of the connector 10 and the middle position of the insertion and extraction end in the length direction of the connector 10. In this way, the image processing system manually selects the test area and selects at least three positions at both ends and the middle part of the connector. The principle of manually selecting the test area is to ensure the representativeness of the measurement. By specifically measuring the key parts of the connector, the riveting stability of the connector can be comprehensively evaluated. This method is applicable to connectors of various shapes and sizes and has wide applicability.

[0041] It should be noted that in this application, the image processing system has a friction distance measurement function, which is completed by comparing pixel differences and outputs the friction distance before and after the insertion and extraction test. The principle of the friction distance measurement function is based on image processing technology. By comparing the pixel differences of the images before and after insertion and extraction, the friction distance can be accurately measured. This method can not only avoid the errors of manual measurement, but also provide a measurement accuracy at the micron level, which is of great significance for evaluating the structural stability and contact reliability of the connector.

[0042] As Figure 2 shown, the calculation method of the friction distance includes dividing the test area 11 into a grid and setting the friction process direction of the connector 10 as the X-axis direction; comparing the difference points A and B in the test area 11 through pixel differences, and marking the pixel coordinates of the difference points A and B as A(x1, y1) and B(x2, y2) respectively, and defining the absolute distance between the difference points A and B in the X-axis direction as the friction distance D x= |X2 - X1|. In this way, the friction distance and contact point pressing force measurement module uses the principle of image difference analysis, captures images through a high-resolution industrial camera and analyzes them in an image processing system, and outputs the friction distance, friction area, and maximum color difference value. The principle of image difference analysis is based on the comparison between the initial image and the actual image formed before and after the plugging and unplugging of the connector. Through precise image capture and processing, it can quantitatively evaluate the friction condition of the connector and the pressing force of the contact point, providing an intuitive quantitative index for the structural stability and contact reliability of the connector, and contributing to the quality control and fault diagnosis of the connector.

[0043] Furthermore, in the image processing system, image difference analysis is completed through pixel difference comparison to confirm the absolute friction distance. The principle of pixel difference comparison is based on image processing technology. By comparing the pixel values of the images before and after plugging and unplugging, the precise position and length of the friction trace are calculated. This micron-level measurement accuracy ensures the accurate measurement of the friction distance and provides key data for the structural analysis of the connector.

[0044] It should be noted that in this application, the calculation method of the friction area is similar to that of the friction distance, and will not be elaborated here.

[0045] Furthermore, the measurement function of the contact point pressing force determines the position of the maximum pressing force by analyzing the maximum color difference between all pixels in a fixed area of the picture. The measurement principle of the contact point pressing force is based on color difference analysis. By calculating the change in pixel values at the same position before and after plugging and unplugging, the magnitude of the pressing force at the contact point can be inferred. This non-contact measurement method not only improves the measurement accuracy but also avoids the damage that traditional measurement methods may cause to the connector, providing a new perspective for the performance evaluation of the connector.

[0046] It should be noted that in this application, the image processing system has a color difference analysis function to calculate the maximum color difference value between all pixels in a fixed area of the picture. The principle of the color difference analysis function is based on color theory. By calculating the color change in a specific area of the image, the pressing force condition of the connector contact point can be reflected. This method is not only simple and easy to implement but also can provide quantitative analysis results, which is of great value for the quality control and fault troubleshooting of the connector.

[0047] Furthermore, the calculation method of the maximum color difference value includes obtaining the RGB values of each pixel point in the test area 11; then, the color difference value of the same pixel point at the plugging and unplugging ends before and after plugging and unplugging is: , where (R1, G1, B1) is the RGB value of the pixel point extracted from the first shooting before the plugging and unplugging test, and (R2, G2, B2) is the RGB value of the same pixel point extracted from the second shooting after the plugging and unplugging test; then, the maximum color difference value ΔE output by the test area 11 is ΔE = MAX(ΔE1, ΔE2, ΔE3 ……, ΔEi ), where i represents pixel point 1, pixel point 2, pixel point 3... pixel point i.

[0048] It should be noted that in this application, during the coloring pretreatment of the plug-in end of the connector 10, the plug-in end is completely immersed in the erasable coloring agent, and the plug-in end is naturally dried in a dust-free environment. In this way, the coloring reliability of the plug-in end is ensured, thereby ensuring the accuracy and reliability of subsequent tests.

[0049] It should be noted that in this application, determining whether the riveting stability of the connector 10 in each test area 11 meets the standard includes: if the friction distance, friction area, and maximum color difference in the same test area 11 are all greater than the corresponding standard thresholds, it is determined that the riveting stability of the test area 11 meets the standard; if the riveting stability of all the selected test areas 11 of the same connector 10 meets the standard, it is determined that the riveting stability of the connector 10 meets the standard.

[0050] Such as Figure 1 shown, the output friction distances L1, L2, L3... are output, the corresponding output friction areas S1, S2, S3... are output, the output maximum optical differences ΔE1, ΔE2, ΔE... are output, the standard thresholds are L, S, ΔE respectively, and the three selected areas are the two ends and the middle as described above, and are distinguished by area 1, area 2, and area 3 respectively.

[0051] It should be noted that in this application, the above plug-in end is a metal end.

[0052] The test method provided by this application can detect the riveting stability of the connector in the server. Of course, the structural components involved in the above test method are all structural components included in the measurement system, mainly including a connector pretreatment module, a connector plugging and unplugging module, a friction distance and contact point pressing force measurement module, and a supporting software system.

[0053] Furthermore, after the components at both ends of the connector are inserted and removed, friction marks will be left on the metal spring pieces of the connector; among them, if the spring piece pressing force is large, the corresponding marks will be more obvious, and the color difference between the contact position and other non-contact positions will also be relatively larger; correspondingly, if the spring piece pressing force is small or even not in contact, the scratching marks will be very small, and the color difference will be very small or even zero. Therefore, the present invention determines whether the pressing force of the spring piece can reach the threshold through the analysis of the color difference. As shown in Table 1 below, the specific comparison relationship between the color difference and the pressing force is given, and the pressing force can be judged according to the color difference.

[0054] Table 1 Table for judging the pressing force according to the color difference

[0055]

[0056] Further, the connector pretreatment module pre-colors and dries the male contact of the connector in advance. This module includes a fixture for fixing the sample to be tested and a container for storing liquid. When in use, an erasable black paint sufficient to submerge the connector terminals is placed in the container, and the sample (only the male contact part of the connector) is immersed in the liquid so that the metal part of the contact is completely colored and evenly colored, and the thickness does not exceed 0.1 mm.

[0057] Further, the friction distance and contact point pressing force measurement module can measure the insertion and extraction marks generated after the connector is inserted and extracted, that is, the friction distance, according to the picture difference, with an accuracy up to the micron level, and eliminates unnecessary errors caused by manual operation. This module includes a connector fixing operation table, a light source, a high-resolution industrial camera, and a necessary image processing system.

[0058] Further, the above-mentioned connector fixing operation table includes a connector fixing fixture and a telescopic operation rod for fixing the camera, and the telescopic operation rod for fixing the camera can rotate 360 degrees to adjust the camera position.

[0059] Further, first fix the pre-treated male end of the connector (note to expose the gold finger part) and then take a photo and transmit it to the image processing system. After performing the insertion and extraction test with the original structure of the server and the female end of the connector, take a photo of the connector terminals again after restoring to the original fixed position. The image processing system calculates the actual friction distance, area, and maximum color difference value of the selected area according to the image difference analysis.

[0060] Further, when taking the above two photos before and after, the placement position of the test sample, the brightness of the light source, the fixed position of the camera, and the set parameters need to be kept consistent.

[0061] Further, the image difference analysis is completed by comparing pixel differences and outputs the friction distance before and after the insertion and extraction test.

[0062] ① Divide the grid of the specified analysis area, and set the X-axis direction of the connector friction process as the direction of the friction absolute distance for confirmation.

[0063] ② Extract the features of the picture through an image processing library (such as OpenCV in Python), perform feature matching, and select two points A and B with differences within the selected area (compare the differences between two points A and B in the selected areas and mark the pixel coordinates of the difference points A(x1, y1), B(x2, y2)).

[0064] ③ We can obtain the Euclidean distance, city block distance, and chessboard distance between the two points; define the absolute distance in the X-axis direction as the friction distance; that is, D x =|X2 - X1|.

[0065] Furthermore, the contact point pressing force measurement function calculates the maximum color difference between all pixels within a fixed area of the picture, and the position of the maximum color difference is the position of the maximum pressing force.

[0066] ① Obtain the RGB values of each pixel point within the specified analysis area;

[0067] ② Then calculate the color difference of the same pixel point 1 before and after plugging and unplugging;

[0068] , where (R1, G1, B1) are the RGB values of pixel point 1 extracted from the first photo, and (R2, G2, B2) are the RGB values of the same pixel point 1 extracted from the photo after the plugging and unplugging test

[0069] ③ Output the maximum color difference ΔE = MAX(ΔE1, ΔE2, ΔE3 ……, ΔE i );

[0070] Furthermore, the above-selected area is manually selected, and at least three positions are selected, which are located at both ends and the middle part of the connector respectively.

[0071] Furthermore, input the calculated friction distance, friction area and maximum color difference into the connector riveting determination system, and the riveting stability of the connector can be determined by comparing with the previously set connector standard threshold.

[0072] It should be noted that in this application, the RGB values of the above-mentioned pixel points refer to that in an RGB image, the pixel value of each pixel point consists of three components: red (R), green (G) and blue (B). The value of each component is usually between 0 and 255, indicating the intensity of the color. For example, the RGB value of white is (255, 255, 255), and that of black is (0, 0, 0). In the RGB565 format, the storage methods of R, G, and B are: R = color & 0xF800, G = color & 0x07E0, B = color &0x001F. In addition, an image processing library such as OpenCV can be used to obtain the RGB values of a specific pixel in the image.

[0073] Through the above embodiments, the present application provides a comprehensive, accurate, and efficient method for testing the riveting stability of connectors in a server. It can not only detect various types of connectors but also quantitatively evaluate the friction distance, friction area, and contact point pressing force of the connectors, providing strong support for the design, production, and maintenance of connectors. In specific applications, the tester first pre-treats the male contact of the connector by placing it in a coloring agent, then uses a fixture for the sample to be tested to fix it on the operating table. After adjusting the angles of the light source and the camera, the first photo is taken. Subsequently, the male contact is inserted into the female end of the connector for plugging and unplugging tests. After the second photo is taken, the differences between the two images are analyzed through an image processing system to output the friction distance, friction area, and maximum color difference value. Finally, these data are compared with the preset threshold values to determine whether the riveting stability of the connector meets the standards. This series of testing processes not only simplifies the traditional manual measurement process but also significantly improves the accuracy and efficiency of the testing, playing an important role in improving the manufacturing quality and performance stability of server connectors. In the fields of high-performance computing, data centers, and AI artificial intelligence, the testing method and system of the present invention can help engineers promptly discover problems existing in the connectors and take measures for improvement, thus ensuring the normal operation of the server and the efficient and stable data transmission.

[0074] The following gives a specific embodiment for detecting the riveting stability of connectors in a server:

[0075] 1) Pre-color and dry the male contact of the connector in advance, ensuring that the coloring is uniform and the thickness does not exceed 0.1 mm;

[0076] 2) Fix the sample on the operating table with a fixture, adjust the angles of the fixture, light source, and camera to take a photo of the sample so that the contact can be completely and clearly recorded; at the same time, record the angles and parameters of the fixture and the camera for convenient use when taking photos again;

[0077] 3) Keep the female end of the connector installed on the original structure of the server, insert the pre-treated male end of the connector into the female end structure, and visually check whether there are friction marks after plugging and unplugging;

[0078] 4) Fix the male contact of the connector after the test with the original parameters and take a photo of the sample;

[0079] 5) Transmit the two photos taken to the image processing system, and manually select at least three measurement areas. After image difference processing, output the friction distance, friction area, and the maximum color difference value within the area;

[0080] 6) Compare the analyzed friction distance, area, and maximum color difference with the connector standard threshold. If all three are greater than the threshold in the same area, it can be determined that the riveting stability of this area meets the standard. If all the selected areas of the same connector meet the standard, it can be determined that the riveting stability of this connector meets the standard.

[0081] It should be noted that in this application, the test system for detecting the riveting stability of server connectors includes: a fixture for the sample to be tested, which is used to stably fix the position of the male contact of the connector; a container capable of storing liquid, which is used to hold the coloring liquid and pre-treat the coloring of the male contact of the connector; a high-resolution industrial camera, which is used to capture images of the connector terminals, and an angle adjustment mechanism is built in or externally connected to the industrial camera; a light source, which provides sufficient lighting environment for the industrial camera to take pictures; an image processing module, which is used to receive the image data output by the industrial camera and output the processing result. This modular design enables the test system to adapt to different types of server connectors, improving the flexibility and application range of detection. Through the fixture and the adjustable industrial camera, the stability of the connector and the accuracy of image acquisition during the test are ensured. The introduction of the light source further optimizes the image quality, facilitating subsequent image processing and analysis. The intelligent analysis of the image processing module can quickly and accurately identify the friction marks and color difference changes of the connector, thereby realizing the automatic detection of riveting stability, greatly improving the test efficiency and accuracy.

[0082] In an exemplary embodiment, the system further includes: a connector preprocessing module, which, in combination with the container capable of storing liquid, pre-treats the coloring of the male contact of the connector, and the thickness of the coloring layer does not exceed 0.1 mm. The design of the preprocessing module takes into account the influence of the coloring liquid on the male contact of the connector. By controlling the thickness of the coloring layer, it not only ensures the comparison effect of subsequent image processing but also avoids the possible influence of an overly thick coloring layer on the connector itself, ensuring the reliability of the test and the integrity of the connector.

[0083] In an exemplary embodiment, the friction distance and contact point pressing force measurement module uses the principle of image difference analysis. It captures images through a high-resolution industrial camera and analyzes them in the image processing module to output the friction distance, friction area, and maximum color difference. The principle of image difference analysis is based on the comparison of images before and after the insertion and extraction of the connector. Through precise image capture and processing, it can quantitatively evaluate the friction situation of the connector and the pressing force of the contact point, providing an intuitive quantitative index for the structural stability and contact reliability of the connector, which is helpful for the quality control and fault diagnosis of the connector.

[0084] In an exemplary embodiment, in the image processing system, image difference analysis is completed through pixel difference comparison to confirm the absolute friction distance. The principle of pixel difference comparison is based on image processing technology. By comparing the pixel values of the images before and after plugging and unplugging, the precise position and length of the friction marks are calculated. This micron-level measurement accuracy ensures the accurate measurement of the friction distance and provides key data for the structural analysis of the connector.

[0085] In an exemplary embodiment, the measurement function of the contact point pressing force determines the position of the maximum pressing force by analyzing the maximum color difference between all pixels in a fixed area of the picture. The measurement principle of the contact point pressing force is based on color difference analysis. By calculating the change in pixel values at the same position before and after plugging and unplugging, the magnitude of the pressing force at the contact point can be inferred. This non-contact measurement method not only improves the measurement accuracy but also avoids the damage that traditional measurement methods may cause to the connector, providing a new perspective for the performance evaluation of the connector.

[0086] In an exemplary embodiment, the image processing system manually selects the test area, and at least three positions at both ends and the middle part of the connector are selected. The principle of manually selecting the test area is to ensure the representativeness of the measurement. By specifically measuring the key parts of the connector, the riveting stability of the connector can be comprehensively evaluated. This method is applicable to connectors of various shapes and sizes and has wide applicability.

[0087] In an exemplary embodiment, when the image processing module processes image data, it maintains the consistency of the sample placement position, light source brightness, camera fixed position, and set parameters. The implementation of the consistency principle is to eliminate the influence of external factors on the test results. Through standardized test conditions, the comparability and repeatability of the image processing results are ensured, which is crucial for establishing a unified test standard and evaluation system.

[0088] In an exemplary embodiment, the female end of the connector remains installed on the original structure of the server. The principle of this design is to simulate the connection state in the real working environment. By performing plugging and unplugging tests in the server structure, the riveting stability of the connector in actual use can be more accurately evaluated, providing a practical reference for the maintenance and upgrade of the server.

[0089] In an exemplary embodiment, the test sample operation platform includes a telescopic and adjustable operating rod for adjusting the position of the industrial camera. The design of the telescopic and adjustable operating rod takes into account the sizes and shapes of different connectors. By flexibly adjusting the camera position, the optimal angle and field of view for image acquisition are ensured, improving the image quality and measurement accuracy.

[0090] In an exemplary embodiment, the color difference analysis function of the image processing module calculates the maximum color difference between all pixels within a fixed area of the picture. The principle of the color difference analysis function is based on color theory. By calculating the color changes in a specific area of the image, it can reflect the pressing force of the connector contact points. This method is not only simple and easy to implement, but also can provide quantitative analysis results, which is of great value for the quality control and fault troubleshooting of connectors.

[0091] In an exemplary embodiment, the friction distance measurement function of the image processing system is completed by comparing pixel differences and outputs the friction distance before and after the plugging and unplugging tests. The principle of the friction distance measurement function is based on image processing technology. By comparing the pixel differences of the images before and after plugging and unplugging, the friction distance can be accurately measured. This method can not only avoid the errors of manual measurement, but also provide a measurement accuracy at the micron level, which is of great significance for the evaluation of the structural stability and contact reliability of connectors.

[0092] The above has introduced in detail a test method for detecting the riveting stability of connectors in a server provided by the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A test method for detecting the riveting stability of connectors in a server, characterized in that, Including: Uniformly color the plug-in end of the connector with a colorant and dry it to completely cure the colored layer; Fix the connector that has been colored and dried on the test bench through a fixing fixture, adjust the first parameter of the camera to a first preset parameter, and adjust the second parameter of the light source to a second preset parameter, take a first shot of the connector and record the initial image of the connector; Conduct a plugging and unplugging test on the connector that has completed the first shot. After inserting the plug-in end into the mating end on the server and then pulling it out, visually observe whether obvious friction marks are generated on the surface of the plug-in end; Fix the connector that has completed the plugging and unplugging operation on the test bench again through the fixing fixture, take a second shot of the connector and record the actual image of the connector; Import the initial image and the actual image into an image processing system for difference comparison, manually select at least three test areas, and the image processing system calculates and outputs the friction distance, friction area, and maximum color difference corresponding to each test area based on the difference between the initial image and the actual image; Compare the friction distance, friction area, and maximum color difference of each test area with the standard threshold of the preset riveting stability of the connector one by one to determine whether the riveting stability of the connector in each test area meets the standard.

2. The test method according to claim 1, characterized in that, The thickness of the colored layer does not exceed 0.1 mm.

3. The test method according to claim 1, characterized in that During the second shot of the connector that has completed the plugging and unplugging operation, the placement position of the connector, the first parameter of the camera, and the second parameter of the light source are all kept consistent with those in the first shot process.

4. The test method according to claim 1, wherein The first parameter at least includes the shooting angle of the camera and the position of the camera.

5. The test method according to claim 1, characterized in that The second parameter at least includes the brightness of the light source and the position of the light source.

6. The test method according to claim 1, characterized in that, The manually selected test areas at least include the two end positions of the plug-in end in the length direction of the connector and the middle position of the plug-in end in the length direction of the connector.

7. The test method according to claim 1, characterized in that, The calculation method of the friction distance includes: Divide the test area into grids and set the friction process direction of the connector as the X-axis direction; Compare the difference points A and B in the test area through pixel differences, and mark the pixel coordinates of the difference point A and the difference point B as A(x1, y1) and B(x2, y2) respectively, and define the absolute distance between the difference point A and the difference point B in the X-axis direction as the friction distance D x =|X2 - X1|.

8. The test method according to claim 1, characterized in that The calculation method of the maximum color difference includes: Obtain the RGB values of each pixel point in the test area; Then, the color difference of the same pixel point before and after plugging and unplugging of the plug-in end is: , where (R1, G1, B1) are the RGB values of the pixel points extracted from the previous shot before the plug-and-play test, and (R2, G2, B2) are the RGB values of the same pixel points extracted from the second shot after the plug-and-play test; Then, the maximum color difference value output by the test area is ΔE = MAX(ΔE1, ΔE2, ΔE3 ……, ΔE i ).

9. The test method according to claim 1, wherein During the coloring pretreatment of the plug-in end of the connector, the plug-in end is completely immersed in the erasable colorant, and the plug-in end is naturally dried in a dust-free environment.

10. The test method according to claim 1, wherein Determining whether the riveting stability of the connector in each test area meets the standard includes: If the friction distance, friction area, and maximum color difference in the same test area are all greater than the corresponding standard threshold, it is determined that the riveting stability of the test area meets the standard; If the riveting stability of all the selected test areas of the same connector meets the standard, it is determined that the riveting stability of the connector meets the standard.

Images