Detection device

Abstract

The utility model provides a detection device, and relates to the technical field of batteries. The detection device comprises a diaphragm placement module and a color recognition module, the diaphragm placement module is provided with a bottom plate, the bottom plate is provided with a mounting end face, at least the mounting end face and a diaphragm on the bottom plate have color difference, and the diaphragm is flatly laid on the bottom plate and located in the mounting end face; the color recognition module is provided with a color recognition view field and used for obtaining colors in the color recognition view field, and the installation end face is located in the color recognition view field. The accuracy of capturing the edge or contour of the diaphragm can be improved, and the error of a measurement result is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of lithium battery separator technology, and in particular to a detection device. Background Technology

[0002] The performance of lithium-ion battery separators directly affects the battery's internal resistance, discharge capacity, cycle life, and safety. The thermal stability of lithium-ion battery separators is a crucial indicator of their performance. To test the thermal stability of separators, the method of measuring thermal shrinkage rate is commonly used.

[0003] Currently, the method for testing heat shrinkage rate typically involves manually recording the initial dimensions of the lithium battery separator using a steel ruler, then heating the separator to the predetermined heating conditions before manually testing it again. By comparing the data before and after heating, the heat shrinkage rate of the lithium battery separator is calculated. However, due to the limitations of steel ruler measurement accuracy, the precision of obtaining the separator edge is not high, and the readings and determination of the edge position can vary due to human differences, easily leading to errors. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a detection device that can improve the accuracy of capturing the edge or contour of the diaphragm and effectively reduce the error of the measurement results.

[0005] This application provides the following technical solution:

[0006] This application provides a testing device for detecting the heat shrinkage rate of a diaphragm, the testing device comprising:

[0007] A diaphragm placement module has a base plate with a mounting end face. At least the mounting end face and the diaphragm on the base plate have a color difference. The diaphragm is laid flat on the base plate and is located within the mounting end face.

[0008] The color recognition module has a color recognition field of view, and is used to acquire the color within the color recognition field of view, wherein the mounting end face is located within the color recognition field of view.

[0009] In some embodiments, the color recognition module includes a color sensor for recognizing colors within the color recognition field of view.

[0010] In some embodiments, the base plate has a first direction and a second direction, the first direction being parallel to the mounting end face, and the second direction being perpendicular to the mounting end face along the direction of gravity;

[0011] The diaphragm placement module also includes a transparent plate, which is placed on the mounting end face along the second direction. One end face of the transparent plate facing the mounting end face is a pressing end face. One side of the diaphragm is completely in contact with the pressing end face, and the other side of the diaphragm is completely in contact with the mounting end face.

[0012] In some embodiments, the transparent plate and the base plate are arranged parallel to each other along the second direction, the transparent plate is placed on the base plate, and the diaphragm is clamped between the transparent plate and the base plate under the gravity of the transparent plate.

[0013] In some embodiments, the transparent plate is a transparent glass plate.

[0014] In some embodiments, the diaphragm placement module further includes:

[0015] A test stand, which is connected to the base plate;

[0016] An adjustment unit is disposed on the test platform and connected to the color recognition module. The adjustment unit is used to adjust the position of the color recognition module relative to the base plate so that the mounting end face is located within the color recognition field of view.

[0017] In some embodiments, the test bench and the base plate are detachably connected.

[0018] In some embodiments, the color recognition module is located above the base plate, and the top of the test platform is provided with a receiving groove for accommodating and limiting the base plate.

[0019] In some embodiments, the adjustment unit includes a first adjustment unit and a second adjustment unit. The first adjustment unit is disposed on the test bench and connected to the second adjustment unit. The first adjustment unit is used to drive the second adjustment unit to move along the second direction. The second adjustment unit is connected to the color recognition module and is used to drive the color recognition module to move along the first direction.

[0020] In some embodiments, the detection device further includes a processing system electrically connected to the color recognition module.

[0021] The embodiments of this application have the following advantages:

[0022] This application provides a testing device. Users simply place the diaphragm at a designated position on the mounting end face of the diaphragm placement module's base plate, ensuring both the mounting end face and the diaphragm are within the color recognition field of view, and then activate the color recognition module to complete the testing process, eliminating the need for complex adjustments or calibration steps. By enhancing the contrast between the background and the diaphragm, the color change area within the color recognition field of view—the diaphragm edge—is highlighted. It should be noted that color changes occur at the junction of the base plate and the diaphragm (i.e., the diaphragm edge), thus replacing manual intervention, reducing measurement edge errors caused by reflection, improving the accuracy of diaphragm edge or contour recognition, and providing more reliable testing results. Furthermore, by configuring appropriate color difference measures, recognition errors caused by reflection from smooth surfaces can be significantly reduced, making the measurement results more stable and reliable. Of course, similar design concepts can also be applied to other applications requiring high-precision dimensional or deformation measurements, such as the performance testing of materials like films and plastic sheets.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This illustration shows a schematic diagram of the structure of a detection device provided in an embodiment of this application from one perspective;

[0026] Figure 2 A schematic diagram of the diaphragm installation structure in a detection device provided by an embodiment of this application is shown;

[0027] Figure 3 This illustration shows a schematic diagram of the test bench of a testing device provided in an embodiment of this application from one perspective.

[0028] Explanation of key component symbols:

[0029] 100 - Adjustment section; 110 - First adjustment section; 120 - Second adjustment section; 200 - Color recognition module; 300 - Test platform; 310 - Receiving tank; 400 - Base plate; 500 - Diaphragm; 600 - Transparent plate. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0031] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] In related technologies, the performance of lithium battery separators (500) directly affects the battery's internal resistance, discharge capacity, cycle life, and safety performance. The thermal stability of lithium battery separators (500) is a crucial indicator of their performance. To test the thermal stability of separators (500), the method of measuring thermal shrinkage rate is commonly used.

[0036] Currently, the method for testing heat shrinkage rate typically involves manually recording the initial dimensions of the lithium battery separator 500 using a steel ruler, then heating the separator to the predetermined heating conditions before manually testing it again. By comparing the data before and after heating, the heat shrinkage rate of the lithium battery separator 500 is calculated. However, the accuracy of measuring the edge of the film with a steel ruler is not high, and the readings may vary due to human differences, easily leading to errors.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, in order to solve the above-mentioned technical problems, this application provides a detection device for detecting the heat shrinkage rate of diaphragm 500. The detection device includes a diaphragm 500 placement module and a color recognition module 200. The diaphragm 500 placement module has a base plate 400 with a mounting end face. At least the mounting end face on the base plate 400 and the diaphragm 500 have a color difference. The diaphragm 500 is laid flat on the base plate 400 and is located within the mounting end face.

[0038] The color recognition module 200 has a color recognition field of view. The color recognition module 200 is used to acquire the color within the color recognition field of view, and the mounting end face is located within the color recognition field of view.

[0039] In these embodiments, a separator 500 edge recognition component is provided, which is particularly suitable for detecting the heat shrinkage performance of lithium battery separator 500. It enhances the color contrast between the base plate 400 and the separator 500, making the edge of the separator 500 stand out, and works with the color recognition module 200 to recognize the edge of the separator 500, thereby improving the accuracy of capturing the edge or contour of the separator 500.

[0040] The diaphragm 500 placement module includes a base plate 400 of a specific color for mounting and supporting the diaphragm 500. In practical applications, different colored base plates 400 can be selected based on the different types of the diaphragm 500, such as transparency, color, texture, and material, to increase the color difference between the diaphragm 500 and the base plate 400. For example, the base plate 400 can be configured as a replaceable structure, facilitating the selection and installation of different colored base plates 400 according to actual needs.

[0041] The base plate 400 has a mounting end face, which is a flat surface that supports the unfolded diaphragm 500, meaning the diaphragm 500 lies flat on the mounting end face. Furthermore, the area of ​​the mounting end face is larger than the area of ​​the diaphragm 500. The color of this mounting end face has a significant color difference from the diaphragm 500, ensuring sufficient contrast between the background and the diaphragm 500 during color recognition.

[0042] It should be noted that the diaphragm 500 must be unfolded and fixed to the mounting end face, ensuring that the entire diaphragm 500 is within the mounting end face, to prevent the edges from exceeding the field of view and affecting the measurement results. Furthermore, wrinkles in the diaphragm 500 should be avoided, as these could lead to inaccurate detection and calculation structures.

[0043] The color recognition module 200 is equipped with a color recognition field of view, capable of acquiring color information within a specified area. The mounting end face is located within the color recognition field of view; that is, the area of ​​the mounting end face is smaller than the area of ​​the color recognition field of view. This ensures that the diaphragm 500 and the base plate 400 are both within the field of view, allowing the diaphragm 500 and its background to be fully covered and recognized. For example, if the coverage area of ​​the color recognition field of view on the plane where the mounting end face is located is S1, the area of ​​the diaphragm 500 is S2, and the area of ​​the mounting end face is S3, then S1 should not be less than S3, and S3 should be greater than S2.

[0044] For example, S1 can be 0.5m 2 0.6m 2 0.7m 2 0.8m 2 0.9m 2 1m 2 1.2m 2 1.5m 2 or 1.8m 2 etc.

[0045] S2 can be 0.3m 2 0.4m 2 0.5m 2 0.6m 2 0.7m 2 0.8m 2 0.9m 2 1.3m 2 or 1.5m 2 etc.

[0046] S3 can be 0.4m 2 0.5m 2 0.6m 2 0.7m 2 0.8m 2 0.9m 2 1m 2 1.4m 2 or 1.7m 2 etc.

[0047] For example, the color recognition module 200 can be an industrial camera, smart camera, RGB color sensor, color coding sensor, laser color scanner, multispectral camera, or embedded vision system, etc.

[0048] In other words, the color recognition module 200 has a color acquisition function: by analyzing the color data in the color recognition field of view, it can accurately identify the boundary or outline of the diaphragm 500. Due to the significant color difference between the background and the diaphragm 500, this helps to more clearly distinguish the position and shape of the diaphragm 500. In other words, through color difference comparison: the design of a significant color difference between the base plate 400 and the diaphragm 500 makes it easier for the color recognition module 200 to distinguish the edges of the diaphragm 500. Even on smooth surfaces prone to reflection, this color difference ensures high recognition accuracy.

[0049] Therefore, users only need to place the diaphragm 500 at a designated position on the mounting end face of the base plate 400 of the diaphragm 500 placement module, ensuring that both the mounting end face and the diaphragm 500 are within the color recognition field of view, and then activate the color recognition module 200 to complete the detection process, without the need for complex adjustment or calibration steps. By enhancing the contrast between the background and the diaphragm 500, the color change area within the color recognition field of view, i.e., the edge of the diaphragm 500, is highlighted. It should be noted that color changes occur at the junction of the base plate 400 and the diaphragm 500 (i.e., the edge of the diaphragm 500), thus replacing manual intervention, reducing measurement errors caused by reflection, improving the accuracy of diaphragm 500 edge or contour recognition, and providing more reliable detection results. Furthermore, by configuring reasonable color difference measures, recognition errors caused by reflection from smooth surfaces can be significantly reduced, making the measurement results more stable and reliable. Of course, similar design concepts can also be applied to other applications requiring high-precision dimensional or deformation measurements, such as performance testing of materials like films and plastic sheets.

[0050] In some embodiments, the color recognition module 200 includes a color sensor for recognizing colors within the color recognition field of view.

[0051] The color sensor should be positioned to ensure that its color recognition field of view covers the entire mounting surface and the diaphragm 500 thereon. For example, the color sensor is positioned directly above the mounting surface with its probe pointing downwards, so that its field of view covers the entire mounting surface. Of course, the color sensor can also be positioned at other locations above the mounting surface, as long as its field of view covers the entire mounting surface; no specific limitation is made here.

[0052] For example, the color sensor can be an RGB color sensor, a color-coded sensor, a multi-channel color sensor, a spectral color sensor, a smart color sensor, a linear array color sensor, a CMOS image sensor, or a CCD image sensor, etc.

[0053] The principle of color recognition is as follows:

[0054] Color sensors are typically equipped with built-in or external light sources to illuminate the area to be measured (i.e., the color recognition field of view). When light shines on the diaphragm 500 and the base plate 400, some of the light is reflected back. The color sensor receives this reflected light and converts it into an electrical signal. The circuitry inside the color sensor analyzes the corresponding color information based on the intensity and wavelength of the received light signal. For example, by analyzing the color difference between the base plate 400 and the diaphragm 500, edge contrast can be enhanced, making the boundary of the diaphragm 500 clearer. Combining the color data provided by the color sensor, an image processing algorithm is used to accurately detect the edge or contour of the diaphragm 500. It should be noted that this image processing algorithm is a commonly used existing technology and is not within the scope of this application's improvements.

[0055] For example, the image processing algorithm is an edge detection algorithm, such as Canny edge detection. Canny edge detection is a classic multi-stage edge detection algorithm, which includes steps such as noise smoothing, gradient calculation, non-maximum suppression and double threshold detection. It can detect subtle edges in the image and is used to detect the edges of the lithium battery separator 500 to ensure the accuracy of edge recognition.

[0056] For example, the Sobe L operator calculates the gradient of an image using a convolution kernel (a 3x3 matrix), thus highlighting edge information in the image. It can detect edges in both horizontal and vertical directions. In industrial automation, it is used for the rapid detection of edge features of objects.

[0057] Alternatively, the image processing algorithm can be a thresholding segmentation algorithm. For example, Otsu thresholding automatically selects the optimal threshold by maximizing the inter-class variance, dividing the image into foreground and background parts. Otsu thresholding is used to separate the diaphragm 500 and the substrate 400, facilitating subsequent edge detection.

[0058] In other words, the edge position of the diaphragm 500 is detected by scanning and measuring on the test bench 300 using a color sensor. It should be noted that the color of the diaphragm 500 and the color of the mounting surface create a color difference at the edge of the diaphragm 500, thus enabling the acquisition of the edge position. Simultaneously, the system transmits the detected edge position information to the analysis system for processing. Based on the received complete edge position information, the analysis system calculates the accurate dimensions of the diaphragm 500 edge and automatically determines the area of ​​the diaphragm 500. Next, the diaphragm 500 undergoes heat treatment. During heat treatment, the diaphragm 500 undergoes thermal shrinkage, causing a change in size. After heat treatment, the system uses the test bench 300 again to detect the dimensions of the treated diaphragm 500 and calculates the new area. Finally, by comparing the area difference before and after treatment, the system automatically calculates the thermal shrinkage rate of the diaphragm 500.

[0059] For example, the analysis system could be a Manufacturing Execution System.

[0060] Clearly, using a color sensor can reduce errors caused by changes in ambient light or other interference factors, thereby improving the overall system's reliability and stability. The integrated design of the color sensor allows users to simply place the diaphragm 500 in the designated position, and the system can automatically complete color recognition and edge detection without complex adjustment steps. Similarly, calculations can also be performed manually by acquiring images and identifying the edges of the thin film in areas of color change.

[0061] In some embodiments, the base plate 400 has a first direction and a second direction, the first direction being parallel to the mounting end face, and the second direction being perpendicular to the mounting end face along the direction of gravity.

[0062] The diaphragm 500 placement module also includes a transparent plate 600, which is placed on the mounting end face along the second direction. The end face of the transparent plate 600 facing the mounting end face is the extrusion end face. One side of the diaphragm 500 is completely in contact with the extrusion end face, and the other side of the diaphragm 500 is completely in contact with the mounting end face.

[0063] In these embodiments, the diaphragm 500 placement module further includes a transparent plate 600, which forms a compression section. The fixing and unfolding method of the diaphragm 500 is further optimized to ensure that the diaphragm 500 remains flat and wrinkle-free during the detection process, thereby improving the accuracy of color recognition. Specifically, the first and second directions of the base plate 400 are set so that the transparent plate 600 has downward pressure.

[0064] A transparent plate 600 is placed on the mounting end face, and the end face of the transparent plate 600 facing the mounting end face is called the extrusion end face. The main function of the transparent plate 600 is to fix the diaphragm 500 by physical extrusion, so that it is flatly attached to the mounting end face.

[0065] In other words, one side of the diaphragm 500 is completely in contact with the extrusion end face, and the other side is completely in contact with the mounting end face. This double-sided contact method can effectively prevent the diaphragm 500 from moving or wrinkling during the testing process.

[0066] For example, the transparent plate 600 is made of a transparent material, such as transparent plastic or glass, to ensure that the color sensor can clearly identify the color information of the diaphragm 500 through this component.

[0067] Furthermore, the extrusion end face is designed to distribute pressure evenly, ensuring that the diaphragm 500 is subjected to consistent pressure across the entire surface, thus avoiding deformation caused by localized stress concentration.

[0068] The diaphragm 500 is in close contact with the extrusion end face and the mounting end face on both sides, forming a stable clamping state. This design not only helps to fix the diaphragm 500, but also reduces the generation of air bubbles or wrinkles. Obviously, by applying appropriate pressure to the diaphragm 500 through the extrusion end face, ensuring that the diaphragm 500 remains flat during the detection process, it is beneficial to improve the accuracy of color recognition.

[0069] The transparent plate 600 prevents wrinkles or bubbles from forming on the diaphragm 500 during testing, ensuring the flatness of the diaphragm 500 surface. This significantly improves the accuracy of color recognition and reduces errors caused by surface unevenness.

[0070] Users simply place the diaphragm 500 on the mounting end face and secure it with the transparent plate 600; the operation is simple and quick. No complicated adjustment steps are required, lowering the barrier to entry for users.

[0071] It is adaptable to various diaphragm types. Since the transparent plate 600 can adjust the pressure and distribution as needed, it can adapt to diaphragms of different thicknesses and materials, and has strong versatility.

[0072] In some embodiments, the transparent plate 600 and the base plate 400 are arranged parallel to each other along a second direction, with the transparent plate 600 placed on the base plate 400. Under the gravity of the transparent plate 600, the diaphragm 500 is clamped between the transparent plate 600 and the base plate 400.

[0073] In these embodiments, the transparent plate 600 and the base plate 400 are arranged in parallel, with the transparent plate 600 placed on the base plate 400 and using its own gravity to hold the diaphragm 500 between them.

[0074] For example, the transparent plate 600 is made of transparent plastic or glass to ensure that the color sensor can clearly identify the color information of the diaphragm 500 through the transparent plate 600. It should be noted that the transparent plate 600 is placed on the base plate 400, and its own gravity applies uniform pressure to the diaphragm 500, so that the diaphragm 500 is clamped between the transparent plate 600 and the base plate 400.

[0075] The base plate 400 is a flat plate with a specific color, used to provide color contrast with the diaphragm 500. The design of the base plate 400 helps the color sensor more accurately identify the edges of the diaphragm 500. The color of the base plate 400 is different from that of the diaphragm 500, and can be selected from red, blue, yellow, etc. The upper surface of the base plate 400 is the mounting end face, on which the diaphragm 500 is unfolded and fixed.

[0076] The transparent plate 600 and the base plate 400 are placed parallel to each other, ensuring that the diaphragm 500 is subjected to uniform pressure across the entire surface, avoiding deformation caused by localized stress concentration. The transparent plate 600 presses against the base plate 400 under its own weight, forming a natural clamping state that firmly holds the diaphragm 500 between them. This design eliminates the need for additional mechanical clamps, simplifying the device structure.

[0077] In some embodiments, the transparent plate 600 is a transparent glass plate.

[0078] In these embodiments, the transparent glass plate takes into full account the transparency and hardness of the material. The transparent glass ensures that light can pass through smoothly, allowing the color sensor to accurately detect color difference changes between the diaphragm 500 and the base plate 400. At the same time, the glass has high hardness, which can effectively prevent scratches or damage to the diaphragm 500 during the measurement process.

[0079] In some embodiments, the diaphragm 500 placement module further includes a test platform 300 and an adjustment unit 100. The test platform 300 is connected to the base plate 400. The adjustment unit 100 is disposed on the test platform 300 and is connected to the color recognition module 200. The adjustment unit 100 is used to adjust the position of the color recognition module 200 relative to the base plate 400 so that the mounting end face is located within the color recognition field of view.

[0080] In these embodiments, the diaphragm 500 placement module also includes a test stage 300 and an adjustment unit 100. The inclusion of these components allows the color recognition module 200 to flexibly adjust its position relative to the base plate 400, thereby ensuring that the mounting end face is always within the color recognition field of view, and thus making it suitable for diaphragms 500 of different sizes.

[0081] The test bench 300 is the basic support structure for the entire diaphragm 500 placement module. It is typically a stable platform used to fix the base plate 400. The test bench 300 is directly connected to the base plate 400 to ensure that the base plate 400 remains stable during testing.

[0082] An adjustment unit 100 is mounted on the test bench 300 and connected to the color recognition module 200. The main function of the adjustment unit 100 is to adjust the position of the color recognition module 200 so that it can be precisely aligned with the mounting surface. The adjustment unit 100 can achieve multi-dimensional positional adjustment, such as up / down, left / right, forward / backward movement, and angle adjustment, through mechanical or electric means, to ensure that the color recognition module 200 can accurately capture the color information of the mounting surface. Typically, the color sensor is positioned directly opposite the mounting surface.

[0083] The test bench 300 needs to have sufficient stability and robustness to prevent shaking or displacement during the testing process, which would affect the accuracy of the measurement results. For example, the test bench 300 is connected to the base plate 400 (base plate 400) by bolts or other fasteners to ensure that the base plate 400 does not loosen or shift during the testing process.

[0084] The adjustment unit 100 includes adjustment mechanisms with multiple degrees of freedom, such as linear movement along the X, Y, and Z axes, as well as rotational adjustment (θ axis). These adjustment mechanisms can be implemented via manual knobs, slide rails, or motor drives.

[0085] For example, to ensure the accuracy of the adjustment, the adjustment unit 100 may also be equipped with a position sensor or encoder to provide real-time feedback on the current position status and help the user make fine adjustments.

[0086] Obviously, by adjusting the adjustment unit 100, the field of view of the color recognition module 200 is ensured to completely cover the mounting end face, so that the diaphragm 500 and its background can be clearly identified within the color recognition field of view.

[0087] Therefore, through the multi-dimensional adjustment of the adjustment unit 100, the field of view of the color recognition module 200 can be accurately aligned with the mounting end face, reducing recognition errors caused by positional deviations. The adjustment unit 100 enables the system to adapt to diaphragms 500 and base plates 400 of different sizes, exhibiting strong versatility. Furthermore, the presence of the adjustment unit 100 allows users to quickly adjust the position of the color recognition module 200 without disassembling and reassembling the equipment, simplifying the operation process.

[0088] In some embodiments, the test stage 300 and the base plate 400 are detachably connected.

[0089] In these embodiments, the test bench 300 and the base plate 400 are detachably connected. This design not only facilitates installation and maintenance but also allows for flexible replacement of different types of base plates 400, such as different colors and textures, to suit different application scenarios, thereby improving the system's versatility and adaptability.

[0090] The base plate 400 is a flat plate with a specific color, used to provide color difference contrast with the diaphragm 500, helping the color recognition module 200 to more accurately identify the edges of the diaphragm 500. Different colors and materials of the plate can be used to meet different testing needs.

[0091] For example, the test platform 300 and the base plate 400 are connected in a detachable manner, such as bolt connection, snap connection, magnetic connection, etc.

[0092] In some embodiments, the color recognition module 200 is located above the base plate 400, and the top of the test platform 300 is provided with a receiving groove 310, which is used to receive and limit the base plate 400.

[0093] In these embodiments, the color recognition module 200 is located above the base plate 400, and the top of the test platform 300 is provided with a receiving groove 310 for accommodating and limiting the base plate 400. This design ensures that the base plate 400 remains stable during the testing process, and that the color recognition module 200 can be accurately aligned with the mounting end face.

[0094] The color recognition module 200 is located above the base plate 400. Its height and angle are adjusted by the adjustment part 100 to ensure that its field of view completely covers the mounting end face. The color recognition module 200 is responsible for acquiring the color information of the mounting end face and the diaphragm 500 on it, in order to perform edge recognition and heat shrinkage rate calculation.

[0095] The test bench 300 has a specially designed receiving groove 310 on its top to accommodate and limit the base plate 400. The design of the receiving groove 310 ensures that the base plate 400 will not move or shift during the testing process, thereby improving the accuracy of the measurement.

[0096] The receiving slot 310 has precise dimensions and shape to perfectly match the shape of the base plate 400, ensuring that the base plate 400 is automatically aligned and securely fixed during placement. For example, the receiving slot 310 may be square or circular, etc.

[0097] Of course, the interior of the receiving groove 310 can be made of anti-slip material or have a textured design to further prevent the base plate 400 from moving during the testing process.

[0098] In some embodiments, the adjustment unit 100 includes a first adjustment unit 110 and a second adjustment unit 120. The first adjustment unit 110 is disposed on the test bench 300, and the first adjustment unit 110 and the second adjustment unit 120 are connected. The first adjustment unit 110 is used to drive the second adjustment unit 120 to move along the second direction. The second adjustment unit 120 is connected to the color recognition module 200, and the second adjustment unit 120 is used to drive the color recognition module 200 to move along the first direction.

[0099] In these embodiments, the base plate 400 has a first direction and a second direction, wherein the first direction is parallel to the mounting end face and the second direction is perpendicular to the mounting end face. The adjustment part 100 includes a first adjustment part 110 and a second adjustment part 120, which are respectively used to drive the position adjustment of the color recognition module 200 in different directions.

[0100] For example, the first direction is parallel to the mounting surface, typically representing the horizontal direction (X-axis or Y-axis). The second direction is perpendicular to the mounting surface, typically representing the vertical direction (Z-axis).

[0101] The first adjustment unit 110 is mounted on the test bench 300 and is responsible for driving the second adjustment unit 120 to move in the second direction.

[0102] The second adjustment unit 120 is connected to the first adjustment unit 110 and to the color recognition module 200, and is responsible for driving the color recognition module 200 to move in the first direction.

[0103] The first adjustment unit 110 is mainly responsible for adjusting the position of the second adjustment unit 120 in the second direction. This allows the entire color recognition module 200 to be precisely aligned in the vertical direction.

[0104] For example, the first adjustment unit 110 can achieve linear movement in the vertical direction by means of an electric slide rail, a lead screw mechanism or a manual knob.

[0105] The second adjustment unit 120 is mainly responsible for adjusting the position of the color recognition module 200 in the first direction. This allows the color recognition module 200 to be precisely aligned in the horizontal direction, ensuring that the field of view completely covers the mounting end face.

[0106] For example, the second adjustment unit 120 can achieve linear movement in the horizontal direction by means of an electric slide rail, a lead screw mechanism or a manual knob.

[0107] Through the coordinated action of the first adjustment unit 110 and the second adjustment unit 120, the color recognition module 200 can be precisely adjusted in two mutually perpendicular directions to ensure that its field of view completely covers the mounting end face and the diaphragm 500 thereon.

[0108] In some embodiments, the detection device further includes a processing system, which is electrically connected to the color recognition module 200.

[0109] These embodiments also include a processing system electrically connected to the color recognition module 200. This design achieves complete hardware-to-software integration, enabling automated detection and analysis of the heat shrinkage performance of the diaphragm 500. It should be noted that the processing logic of this system is conventional and not within the scope of this application's improvements.

[0110] The processing system receives data from the color recognition module 200, processes and analyzes it to calculate the thermal shrinkage rate and other relevant parameters of the diaphragm 500. For example, the processing system includes a data acquisition unit, a data processing unit, and a control unit. The data acquisition unit receives color data transmitted from the color recognition module 200. The data processing unit analyzes the acquired color data, identifies the edges of the diaphragm 500, and calculates its dimensional changes. The control unit coordinates the operation of the entire system, including motion control of the adjustment unit 100, data acquisition, and processing. The control of the adjustment unit 100 can be manually operated, and the identification and drawing of the film edges can also be done manually by tracing.

[0111] The color recognition module 200 is electrically connected to the processing system via cable or other communication methods to transmit color data in real time. It employs standard data transmission protocols (such as USB, RS-232, or wireless communication) to ensure the stability and reliability of data transmission.

[0112] Data processing flow: The color recognition module 200 acquires the color information of the mounting end face and the diaphragm 500 on it, and transmits it to the processing system. The data processing unit in the processing system uses image processing algorithms to identify the edges of the diaphragm 500 and calculate its contour. Based on the edge detection results, the dimensional changes of the diaphragm 500 before and after heating are calculated, thereby obtaining the thermal shrinkage rate. The processing system displays the calculation results to the user through the user interface and generates a report for subsequent analysis.

[0113] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0114] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0115] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A testing device for detecting the thermal shrinkage rate of a diaphragm, characterized in that, The detection device comprises: A diaphragm placement module having a base plate with a mounting end face, the base plate having a color difference between at least the mounting end face and the diaphragm, the diaphragm being laid flat on the base plate with the diaphragm inside the mounting end face; A color recognition module having a color recognition field of view, the color recognition module being configured to acquire the color within the color recognition field of view, and the mounting end face being located within the color recognition field of view.

2. The detection device of claim 1, wherein, The color recognition module comprises a color sensor configured to identify the color within the color recognition field of view.

3. The detection device of claim 1, wherein, The base plate has a first direction and a second direction, the first direction being parallel to the mounting end face, and the second direction being perpendicular to the mounting end face along the direction of gravity; The diaphragm placement module further comprises a transparent plate placed on the mounting end face along the second direction, one end face of the transparent plate facing the mounting end face being a pressing end face, one side face of the diaphragm being in full abutment with the pressing end face, and the other side face of the diaphragm being in full abutment with the mounting end face.

4. The detection device of claim 3, wherein, The transparent plate and the base plate are parallel along the second direction, the transparent plate being placed on the base plate, and under the action of gravity of the transparent plate, the diaphragm is clamped between the transparent plate and the base plate.

5. The detection device of claim 4, wherein, The transparent plate is a transparent glass plate.

6. The detection device of claim 4, wherein, The diaphragm placement module further comprises: A test bench connected with the base plate; An adjustment portion provided on the test bench, the adjustment portion being connected with the color recognition module, and the adjustment portion being configured to adjust the position of the color recognition module relative to the base plate so that the mounting end face is located within the color recognition field of view.

7. The detection device of claim 6, wherein, The test bench and the base plate are detachably connected.

8. The detection device of claim 7, wherein, The color recognition module is located above the base plate, a receiving groove is provided on the top of the test bench, and the receiving groove is configured to receive and limit the base plate.

9. The detection device of claim 8, wherein, The adjustment portion comprises a first adjustment portion and a second adjustment portion, the first adjustment portion being provided on the test bench, the first adjustment portion being connected with the second adjustment portion, the first adjustment portion being configured to drive the second adjustment portion to move along the second direction, the second adjustment portion being connected with the color recognition module, and the second adjustment portion being configured to drive the color recognition module to move along the first direction.

10. The detection device according to any one of claims 1 to 9, characterized in that, The detection device further comprises a processing system electrically connected with the color recognition module.

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