Spline crack detection and analysis device

Abstract

The utility model discloses a spline crack detection and analysis device which comprises a frame body, a liquid dropping device, a camera shooting module, a light source system, an image analysis controller and a spline box arranged on a table top, and a spline needing to be tested is placed in the spline box; the liquid dropper is arranged at the top of the frame body and is used for controlling the dropping speed and progress of the test drops according to the control signal; the camera shooting module is arranged below the liquid dropping device and is used for shooting a sample to be detected; the light source system is arranged below the camera photographing module; adjusting the illumination angle and brightness according to the control signal; the image analysis controller is arranged on the table top at the other end of the frame body; the liquid dropping device automatically drops dropping liquid onto a spline on the spline box according to a preset dropping speed, a camera photographing module is started, and photographing analysis is carried out once every preset time N seconds; and after the test is completed, summarizing analysis results to finally generate a test report.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection and detection devices, in particular to a spline crack detection and analysis device. Background Art

[0002] New material plastics are widely used in many industries such as home appliances and automotive interiors. Different industries have various requirements such as corrosion resistance and temperature adaptability. Therefore, material companies need to conduct various corresponding physical and chemical tests before mass production of new materials under development. Since physical and chemical tests take a long time, corresponding testing and analysis equipment are needed to help researchers operate. At present, the main testing equipment in the industry only provides general material sample fixation and test drop timing drip test. In these test equipment, the control of general drops requires manual processing, and the cracks in the specimens require manual observation with the naked eye. Therefore, there will be the following problems:

[0003] 1. The material reaction time is relatively long, and long-term manual observation is required to obtain effective data. Manual visual inspection is time-consuming and labor-intensive, and prone to errors. 2. The test results and data are recorded manually, and the accuracy is difficult to guarantee.

[0004] 3. The testing process is difficult to quantify and visualize. Utility Model Content

[0005] The utility model aims to overcome at least one defect of the above-mentioned prior art and provide a spline crack detection and analysis device to achieve the technical effects of compact structure, reasonable layout and high detection efficiency.

[0006] The utility model provides a spline crack detection and analysis device, comprising a frame, wherein the middle layer of the frame is provided with a table, and further comprising a dropper, a camera photographing module, a light source system, an image analysis controller, and a spline box placed on the table, wherein the spline to be tested is placed in the spline box; the dropper is arranged at the top of the frame, and controls the dripping speed and progress of the test drop according to a control signal; the camera photographing module is arranged below the dropper, and is used to take pictures of the sample to be tested; the light source system is arranged below the camera photographing module; the illumination angle and brightness are adjusted according to the control signal; the image analysis controller is arranged on the table at the other end of the frame; the dropper automatically drops the drop onto the spline on the spline box according to a preset dripping speed, and at this time the camera photographing module is started, and a photographing analysis is performed every preset time N seconds; after the test is completed, all the photographing analysis results are summarized, and a test report is generated using the image analysis controller.

[0007] The utility model is a spline testing device based on AI crack detection, which can accurately and quickly detect the crack generation and change state of the spline under test, and quantify the output from multiple dimensions such as the generation time, generation position, length, area, etc. of the crack, and the device can add the time dimension to visualize the test process. The dropper can control the dripping speed and progress of the test drop according to the control signal. The camera module can be a multi-viewing angle multi-camera system, which can take pictures of multiple plastic samples and record the shooting process. The light source system of the utility model uses different angles of light source brightness control according to the control signal to better illuminate different cracks. The plastic spline to be tested is placed in the spline box. The image analysis controller can control the dripping speed of the dropper, the camera system and the light source control system.

[0008] The image analysis controller of the utility model has multiple algorithms built in. The first one can be the Otsu threshold segmentation algorithm: by calculating the grayscale histograms of each level of the image, an optimal threshold is obtained, and the pixel points are divided into two parts, namely the crack part and the non-crack part. The second one is the histogram analysis segmentation algorithm: it uses the grayscale histogram statistical information of the image to find the grayscale segments in the image, so as to separate different segments, and is often used in combination with the Otsu algorithm. The third one is the deformation model segmentation algorithm: it establishes a geometric shape model of the crack and non-crack areas, and achieves the segmentation effect by optimizing the deformation parameters and coordinating the pixels on the image. The fourth one is the horizontal hierarchical segmentation algorithm: it recursively divides the image into multiple parts by using the grayscale difference of adjacent pixels as the segmentation standard, until the stop standard is met, and the crack area can be located. The fifth one is the deep learning segmentation algorithm: the deep learning model is a model that can automatically learn features. It can learn the features of different objects in the image from a large amount of training data, and use these features to segment the image. The convolutional neural network is used for segmentation, which has a good fit to the image and can accurately locate the crack area. Common ones include FCN, Unet, etc.

[0009] Furthermore, the camera module includes a plurality of camera modules, the frame includes a plurality of transverse brackets, the camera modules are hung on the transverse brackets; and the camera modules are rotatably connected to the transverse brackets.

[0010] Specifically, the camera module is cylindrical and fixed by a fixing plate and a support column. The camera module is fixed to the fixing plate by screws, and the fixing plate is fixed to the support column by screws. The support column is in a lying T-shape, one end of which is connected to the fixing plate, and a through hole is provided in the middle of the other end. The through hole passes through the horizontal bracket to achieve connection during rotation. By rotating the support column, the angle of the camera module can be adjusted.

[0011] Preferably, the angle between the axis of the lens of the camera module and the table top is 70-90°, as this angle has the best shooting effect and can better match the lighting module.

[0012] Furthermore, the transverse brackets include two groups, which are parallel and located in the same horizontal plane; the plurality of camera modules are regularly arranged and respectively arranged on the two groups of transverse brackets. Preferably, the camera modules arranged on the two groups of transverse brackets can be arranged in a mirror-symmetrical manner to achieve shooting without blind spots.

[0013] More preferably, the camera modules are in eight groups, and four groups of camera modules are mounted on each group of transverse brackets.

[0014] Furthermore, the frame also includes a plurality of groups of longitudinal brackets; the light source system includes a plurality of groups of light modules; a group of light modules is hung at the bottom of each group of longitudinal brackets.

[0015] In order to improve the shooting effect of the camera module, the utility model designs multiple sets of light modules, which are installed using longitudinal brackets. The light modules are arranged at both ends below the camera module, which does not affect the work of the camera module and is closer to the spline, achieving the best shooting effect.

[0016] More preferably, there are two groups of longitudinal brackets; a group of light modules is arranged under each group of longitudinal brackets; the two groups of light modules are mirror-symmetrical with the spline box as the center, and the angle between the plane where the light modules are located and the table top is 20-50°.

[0017] In addition to the light modules arranged on the longitudinal bracket, the side walls and the top of the bracket are also provided with multiple sets of light modules, so as to realize all-round lighting without dead angles and ensure better shooting effect.

[0018] Furthermore, the image analysis controller includes a host and a display; the host is arranged on the lower layer of the frame; and the display is arranged on the table top.

[0019] The frame of the utility model is in the form of a cabinet, which is divided into two by a longitudinal partition in the middle and is provided with a table top, and the height of the table top can be designed as needed; one side of the longitudinal space is used for placing an image analysis controller including a host and a display, wherein the display is placed on the table top, and the host can be placed in the space on the table top; the other side of the longitudinal space is used for installing equipment such as a dropper, a camera module, and a light source system, so as to facilitate user operation.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model provides a spline testing device based on AI crack detection, which can accurately and quickly detect the crack generation and change state of the spline under test, and quantify the output from multiple dimensions such as the generation time, generation position, length, area, etc. of the crack. In addition, the device can add the time dimension to visualize the test process.

[0022] This device integrates a dropper, which can automatically control the dripping rate of the test material according to the control signal. Reduce manual operation. The image analysis system of this device has built-in traditional image analysis and AI image analysis models, which can quickly and accurately analyze each frame of the image; this device can monitor and analyze the entire process from the beginning to the end of the test according to the test settings, detect cracks in the test specimens and visualize the crack change process, reducing possible omissions and negligence in manual detection. At the same time, this device can directly generate reports, reducing the report data collation operations of test users. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a schematic diagram of the overall structure of a spline crack detection and analysis device.

[0024] Figure 2 The utility model is a schematic diagram of the local layout structure of a spline crack detection and analysis device.

[0025] Figure 3 This is a schematic diagram of the installation structure of the camera module of the present utility model. DETAILED DESCRIPTION

[0026] The drawings in the embodiments provide a more detailed description of the technical solutions in the embodiments of the utility model. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the utility model, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the utility model, and should not be construed as limitations on the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. The embodiments of the utility model are described in detail below in conjunction with the drawings.

[0027] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0029] Example

[0030] This embodiment protects a spline crack detection and analysis device, such as Figure 1 As shown, it includes a frame 1, the middle layer of the frame 1 is provided with a table 11, and also includes a dropper 2, a camera module 3, a light source system 4, an image analysis controller, and a sample box 6 placed on the table 11, in which the sample to be tested is placed; the image analysis controller includes a host 51 and a display 52; the host 51 is arranged at the lower layer of the frame 1; the display 52 is arranged on the table 11. The entire frame can also be provided with a door panel so that the top of the table is in an enclosed state to reduce external influences.

[0031] The dropper 2 is arranged on the top of the frame 1, and controls the dripping speed and progress of the test drops according to the control signal; the camera module 3 is arranged below the dropper 2, and is used to take pictures of the sample to be tested; the light source system 4 is arranged below the camera module 3; the lighting angle and brightness are adjusted according to the control signal; the image analysis controller is arranged on the table 11 at the other end of the frame 1; the dropper 2 automatically drops the liquid onto the spline on the spline box 6 according to the preset dripping speed, and the camera module 3 is started at this time, and a photo analysis is performed every preset time N seconds; after the test is completed, all photo analysis results are summarized, and a test report is generated using the image analysis controller.

[0032] like Figure 2 As shown, the camera module 3 includes a plurality of camera modules 31 , the frame 1 includes a plurality of transverse brackets 12 , and the camera modules 31 are hung on the transverse brackets 12 ; the camera modules 31 are rotatably connected to the transverse brackets 12 .

[0033] Specific, combined Figure 3As shown, the camera module 31 is cylindrical and fixed by a fixing plate 32 and a support column 33. The camera module 31 is fixed to the fixing plate 32 by screws, and the fixing plate 32 is fixed to the support column 33 by screws. The support column 33 is in a lying T-shape, one end of which is connected to the fixing plate 32, and a through hole 10 is provided in the middle of the other end. The through hole 10 passes through the horizontal bracket 12 to achieve connection during rotation. By rotating the support column 33, the angle of the camera module 31 can be adjusted.

[0034] Combination Figure 2 As shown, the angle between the axis of the lens of the camera module 31 and the table 11 is 70-90°, which provides the best shooting effect and can better match the lighting module 41 .

[0035] like Figure 2 As shown, the transverse bracket 12 includes two groups, which are parallel and located in the same horizontal plane; a plurality of the camera modules 31 are regularly arranged and respectively arranged on the two groups of transverse brackets 12. Preferably, the camera modules 31 arranged on the two groups of transverse brackets 12 can be arranged in a mirror-symmetrical manner to achieve shooting without blind spots.

[0036] like Figure 2 As shown, there are eight groups of camera modules 31 , and four groups of camera modules 31 are installed on each group of transverse brackets 12 .

[0037] like Figure 2 As shown, the frame 1 also includes multiple groups of longitudinal brackets 13; the light source system 4 includes multiple groups of light modules 41; a group of light modules 41 is hung at the bottom of each group of longitudinal brackets 13. There are two groups of longitudinal brackets 13; a group of light modules 41 is arranged under each group of longitudinal brackets 13; the two groups of light modules 41 are mirror-symmetrical with the spline box 6 as the center, and the angle between the plane where the light modules 41 are located and the table 11 is 20-50°. In addition to the light modules 41 arranged on the longitudinal brackets 13, multiple groups of light modules 41 are also arranged on the side walls and the top of the frame 1. All-round lighting without blind spots is achieved, ensuring better shooting effects.

[0038] Dynamic working principle of the utility model:

[0039] The preferred user installs the drops and the spline box 6 according to the test requirements. The image analysis controller contains a software program, and the control options of different splines and drops can be set in the software. After the user sets the operating parameters according to the actual situation, the system can run automatically. During the operation, the drops automatically drip onto the splines on the spline box 6 according to the preset dripping speed. At this time, the camera photo module 3 is started, and a photo analysis is performed every preset time N seconds. According to the actual test cycle setting, after the test is completed, all photo analysis results are summarized, and then a test report is generated.

[0040] Introduction to the principle of photo analysis: The test analysis of the spline is mainly based on the physical and chemical reaction of the spline after the droplet is dripped, which leads to cracks on the spline, as well as the production process of the cracks. The image analysis controller of this utility model is compatible with cracks in different situations. The following multiple algorithms are integrated in the device. Users can apply different crack detection algorithms according to the actual crack situation.

[0041] Therefore, the dripper design and visual defect detection of the device realize the reasonable layout mode of multi-view and multi-light source scheme, which is convenient for the development of experimental work; and the crack detection technology of the utility model is based on multiple image processing algorithms (including AI algorithms), which can facilitate rapid crack detection; the whole device automatically outputs the crack appearance and change trend based on the time dimension to automatically obtain analysis reports, which is highly efficient.

[0042] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model. Those skilled in the art can also make other changes within the spirit of the utility model and apply them to the design of the utility model, as long as they do not deviate from the technical effects of the utility model. These changes made according to the spirit of the utility model should be included in the scope of protection claimed by the utility model.

Claims

1. A spline crack detection and analysis device, comprising a frame (1), wherein the middle layer of the frame (1) is provided with a table (11), characterized in that: It comprises a dropper (2), a camera module (3), a light source system (4) and an image analysis controller; and also comprises a sample box (6) placed on the table (11), wherein the sample to be tested is placed in the sample box (6); The dropper (2) is arranged on the top of the frame (1) and controls the dripping speed and progress of the test drop according to a control signal; the camera module (3) is arranged below the dropper (2) and is used to take pictures of the sample to be tested; The light source system (4) is arranged below the camera module (3); the illumination angle and brightness are adjusted according to a control signal; and the image analysis controller is arranged on the table (11) at the other end of the frame (1).

2. The spline crack detection and analysis device according to claim 1, characterized in that: The camera shooting module (3) comprises a plurality of camera modules (31); the frame (1) comprises a plurality of transverse brackets (12); the camera modules (31) are hung on the transverse brackets (12); and the camera modules (31) are rotatably connected to the transverse brackets (12).

3. The spline crack detection and analysis device according to claim 2, characterized in that: The angle between the axis of the lens of the camera module (31) and the table top (11) is 70 to 90 degrees.

4. The spline crack detection and analysis device according to claim 3, characterized in that: The transverse brackets (12) include two groups, which are parallel and located on the same horizontal plane; a plurality of camera modules (31) are regularly arranged and respectively disposed on the two groups of transverse brackets (12).

5. The spline crack detection and analysis device according to claim 4, characterized in that: There are eight groups of camera modules (31), and four groups of camera modules (31) are installed on each group of transverse brackets (12).

6. The spline crack detection and analysis device according to claim 1, characterized in that: The frame (1) further comprises a plurality of groups of longitudinal brackets (13); the light source system (4) comprises a plurality of groups of light modules (41); a group of light modules (41) is hung at the bottom of each group of longitudinal brackets (13).

7. The spline crack detection and analysis device according to claim 6, characterized in that: There are two groups of longitudinal brackets (13); a group of light modules (41) is arranged under each group of longitudinal brackets (13); the two groups of light modules (41) are mirror-symmetrical with the spline box (6) as the center, and the angle between the plane where the light modules (41) are located and the table top (11) is 20 to 50 degrees.

8. The spline crack detection and analysis device according to claim 6, characterized in that: The side walls and top of the frame (1) are also provided with a plurality of light modules (41).

9. The spline crack detection and analysis device according to claim 1, characterized in that: The image analysis controller comprises a host (51) and a display (52); the host (51) is arranged on the lower layer of the frame (1); and the display (52) is arranged on the table (11).

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