A fabric defect detection device

Abstract

This application provides a fabric defect detection device, comprising: a base, with supports at both a first end and a second end of the base; a first roller for conveying fabric rotatably mounted between the supports at the first end, and a second roller for winding fabric rotatably mounted between the supports at the second end; a limiting plate, adjustablely mounted on the first and second rollers respectively, for limiting the position of the fabric on the first and second rollers; and a detection box disposed between the first and second rollers, comprising a first detection area and a second detection area. The first detection area includes a first acquisition camera and a first transmission device, the first transmission device being used to adjust the fabric conveying angle; the second detection area includes a second acquisition camera and a second transmission device, the acquisition direction of the second acquisition camera being perpendicular to the second transmission device. This device enriches defect detection parameters, improves defect detection effectiveness, and avoids the influence of fabric offset on defect detection results.

Description

Technical Field

[0001] This application relates to the field of textile machinery technology, and in particular to a fabric defect detection device. Background Technology

[0002] The finishing process in textile enterprises mainly involves inspecting and repairing various quality problems that occur during the weaving process. Currently, in the field of fabric defect detection in the textile industry, manual inspection remains the primary method of quality inspection. A common method involves inspectors using auxiliary means such as lighting to examine and mark fabric defects, which are then repaired by repair personnel based on the marks. However, in traditional manual inspection, both inspectors and repair personnel must undergo professional training to acquire the necessary skills. Furthermore, during manual fabric inspection, the subjective factors inherent in both inspectors and repair personnel can lead to variations in their working conditions, indirectly resulting in inconsistent fabric inspection quality.

[0003] Meanwhile, in related technologies, when detecting defects in fabrics of different materials and with different requirements, the same detection method is used, which cannot achieve different detection of fabrics according to different materials and requirements. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a fabric defect identification device that solves or at least partially solves the above problems.

[0005] To achieve the above objectives, this application provides a fabric defect detection device, comprising:

[0006] The base has supports at its first and second ends, with a first roller for conveying fabric rotatably mounted between the supports at the first end and a second roller for winding up fabric rotatably mounted between the supports at the second end.

[0007] Limiting plates are adjustablely mounted on the first roller and the second roller, respectively, to limit the position of the fabric on the first roller and the second roller;

[0008] A detection box is disposed between the first roller and the second roller. The detection box includes a first detection area and a second detection area. The first detection area includes a first acquisition camera and a first transmission device. The first acquisition camera is adapted to the position of the first transmission device. The first transmission device is used to adjust the transmission angle of the fabric so that the first acquisition camera can acquire the first image information of the fabric from different tilt angles of the fabric.

[0009] The second detection area includes a second acquisition camera and a second transmission device. The positions of the second acquisition camera and the second transmission device are adapted to each other. The acquisition direction of the second acquisition camera is perpendicular to the second transmission device, so that the second acquisition camera can acquire second image information of the fabric from the front side of the fabric.

[0010] Optionally, the base has two adjustment slots on its top, which are located below the first roller and the second roller respectively, and the extension direction of the adjustment slots is the same as the extension direction of the first roller and the second roller respectively.

[0011] The limiting plate includes a first limiting plate and a second limiting plate. Both the first limiting plate and the second limiting plate have protrusions at their bottoms, and the protrusions are slidably connected to the adjusting groove.

[0012] Optionally, a first adjusting screw is provided rotatably along the extension direction of the adjusting groove. The first adjusting screw includes a first part and a second part, and the threads of the first part and the second part are arranged in opposite directions.

[0013] The protrusion is provided with a drive screw hole, the first limiting plate sleeves the first part of the first adjusting screw through the drive screw hole, and the second limiting plate sleeves the second part of the first adjusting screw through the drive screw hole.

[0014] The bracket is provided with a handle, which is fixedly connected to the first adjusting screw and used to rotate the first adjusting screw.

[0015] Optionally, the first conveying device includes: a conveying plate, a cylinder, a first guide roller, and a second guide roller;

[0016] The end of the transmission plate near the first roller is hinged to the bottom of the base. The side of the transmission plate away from the base is provided with a first guide roller and a second guide roller in parallel along the direction from the first roller to the second roller. One end of the cylinder is hinged to the top of the base, and the other end is hinged to the side of the transmission plate near the base.

[0017] The first acquisition camera is positioned perpendicular to the bottom of the detection box.

[0018] Optionally, the second transmission device includes a third guide roller and a fourth guide roller, which are arranged side by side between the first transmission device and the discharge port of the detection box; the acquisition direction of the second acquisition camera is perpendicular to the plane formed by the third guide roller and the fourth guide roller.

[0019] Optionally, both the first end bracket and the second end bracket are equipped with a first motor. The output shaft of the first motor at the first end is fixedly connected to the first roller, and the output shaft of the first motor at the second end is fixedly connected to the second roller. The first motors have the same specifications.

[0020] Optionally, the detection box includes a first chamber;

[0021] The top of the first chamber is provided with a camera adjustment mechanism, which includes: a second adjustment screw, a lifting plate, a connecting rod, and a second motor;

[0022] The second adjusting screw is rotatably connected to the top of the first chamber along the direction from the inlet to the outlet of the detection box. The second adjusting screw includes a third part and a fourth part, and the threads of the third part and the fourth part are arranged in opposite directions.

[0023] Both the third and fourth parts are threadedly connected to a drive block. A connecting rod is hinged to the side of the drive block away from the top of the first chamber. The lifting plate is hinged to the end of the connecting rod away from the drive block. The first acquisition camera and the second acquisition camera are located on the side of the lifting plate away from the connecting rod.

[0024] Optionally, the detection box further includes a second chamber located above the first chamber. The first chamber is equipped with a recognition terminal, which is connected to the first acquisition camera and the second acquisition camera for identifying defects in the first image information and the second image information.

[0025] Optionally, the feed inlet of the detection box is provided with a fifth guide roller, one end of which is fixedly provided with a drive wheel, and a driven wheel is rotatably provided between the fifth guide roller and the first detection area. The driven wheel is fixedly connected to a fan, and the drive wheel and the driven wheel are connected by a conveyor belt.

[0026] Optionally, the radius of the driving wheel is larger than the radius of the driven wheel.

[0027] As can be seen from the above, the fabric defect detection device provided in this application utilizes the cooperation of a first acquisition camera and a first transmission device to tilt the fabric at different angles for different materials. The first acquisition camera acquires first image information of the fabric at different tilt angles. The second acquisition camera and the second transmission device acquire first image information from a direction perpendicular to the fabric, thereby enriching the defect detection parameters and improving the detection effect of the fabric.

[0028] At the same time, the limiting plates on the first and second rollers are used to limit the fabric of different widths, so as to avoid the fabric from shifting and affecting the defect detection results. Also, it is necessary to avoid the shift from causing misalignment during winding and affecting the winding of the fabric.

[0029] Finally, a fifth guide roller is installed at the inlet of the inspection box. During the fabric transfer process, the rotation of the fifth guide roller drives the drive wheel to rotate, and the rotation of the driven wheel connected to the conveyor belt drives the fan to rotate, cleaning the fine dust on the fabric and preventing the fine dust on the fabric from affecting the defect detection results. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall fabric defect detection equipment according to an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the internal structure of the detection box according to an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the mounting structure of the limiting plate according to an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the mounting plate and the first adjusting screw in an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the fifth guide roller and fan working together in an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of the first transmission device according to an embodiment of this application.

[0037] Reference numerals: Base 1, Limiting plate 2, Detection box 3, Support 101, First roller 102, Second roller 103, First motor 104, First acquisition camera 301, Second acquisition camera 302, Adjustment groove 201, First limiting plate 21, Second limiting plate 22, Protrusion 202, First adjusting screw 203, Drive screw hole 204, First part 2031, Second part 2032, Handle 205, Transmission plate 303, Cylinder 304. First guide roller 305, second guide roller 306, third guide roller 307, fourth guide roller 308, first chamber 31, second chamber 32, second adjusting screw 401, lifting plate 402, connecting rod 403, second motor 404, third part 4011, fourth part 4012, drive block 405, identification terminal 321, fifth guide roller 501, driving wheel 502, driven wheel 503, fan 504, inlet 311, outlet 312. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0039] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] When detecting fabric defects, relevant technologies typically involve manually or mechanically capturing images of the fabric from the front. However, due to the elasticity of fabric, defects may not be obvious when viewed from the front, but can be detected from the side. Therefore, it is essential to perform detection from different angles for fabrics with varying elasticity and materials. This can enrich the fabric defect detection data and improve the effectiveness of fabric defect detection.

[0041] Based on this, refer to Figure 1 , Figure 2As shown, this application provides a fabric defect detection device, including: a base 1, with a bracket 101 provided at both the first and second ends of the base 1, a first roller 102 for conveying fabric rotatably provided between the brackets 101 at the first end, and a second roller 103 for winding fabric rotatably provided between the brackets 101 at the second end.

[0042] In some embodiments, the first end of the base 1 may be as follows: Figure 1 The left end of the base 1 can also be the right end of the base 1. Correspondingly, the second end of the base 1 can be as follows: Figure 1 The right side of the base 1, or the left side of the base 1, is connected to the first roller 102 for conveying the fabric via the bracket 101 between the first ends. The second roller 103 for winding the fabric via the bracket 101 between the second ends is connected to the first roller 102 for winding the fabric after defect detection. It can be understood that the first roller 102 and the second roller 103 rotate in the same direction.

[0043] The limiting plate 2 is adjustablely mounted on the first roller 102 and the second roller 103 respectively, and is used to limit the position of the fabric on the first roller 102 and the second roller 103.

[0044] In some embodiments, different types of fabrics have different widths. During the transmission, winding, and defect detection of fabrics of different widths, the elasticity of the fabric itself can cause the support 101 on one side of the fabric to move. This can lead to positional offset or even overlap during subsequent defect detection, affecting the detection results. At the same time, the misalignment of the fabric can also affect the winding effect during the winding process. By adjusting the limit plate 2, the distance between the limit plates 2 can be adjusted according to the width of the fabric, thereby limiting the position of the fabric on the first roller 102 and the second roller 103.

[0045] In some embodiments, the limiting plate 2 is used to limit the fabric at the middle position of the first roller 102 and the middle position of the second roller 103.

[0046] The detection box 3 is disposed between the first roller 102 and the second roller 103. The detection box 3 includes a first detection area and a second detection area. The first detection area includes a first acquisition camera 301 and a first transmission device. The first acquisition camera 301 is adapted to the position of the first transmission device. The first transmission device is used to adjust the fabric transmission angle so that the first acquisition camera 301 can acquire the first image information of the fabric from different tilt angles of the fabric.

[0047] The second detection area includes a second acquisition camera 302 and a second transmission device. The positions of the second acquisition camera 302 and the second transmission device are adapted to each other. The acquisition direction of the second acquisition camera 302 is perpendicular to the second transmission device, so that the second acquisition camera 302 can acquire the second image information of the fabric from the front side of the fabric.

[0048] In some embodiments, reference Figure 2 As shown, the interior of the detection box 3 is divided into a first detection area and a second detection area. These areas can be arbitrarily divided according to actual conditions. For example, the first detection area is in the upper half of the detection box 3, and the second detection area is in the lower half. Alternatively, the first detection area may be in the left half of the detection box 3, and the second detection area in the right half. In the first detection area, through the cooperation of the first acquisition camera 301 and the first transmission device, the acquisition direction of the first acquisition camera 301 can be fixed. The angle of the fabric can be adjusted by the first transmission device to obtain first image information of the fabric from different angles. Similarly, the direction of the first acquisition camera 301 can be adjustable, while the first transmission device remains fixed. Adjusting the direction of the first acquisition camera 301 allows it to acquire first image information of the fabric from different angles.

[0049] In the second detection area, the second acquisition camera 302 is used to acquire second image information of the front of the fabric. The acquisition direction of the second acquisition camera 302 is only required to be perpendicular to the second transmission device; the positions of the second acquisition head and the second transmission device are not limited. For example, the acquisition direction of the first acquisition camera 301 is perpendicular to the bottom of the detection box 3, and the transmission direction of the second transmission device to the fabric is parallel to the bottom of the detection box 3.

[0050] It is understandable that different materials and fabrics with different requirements may exhibit various fabric defects, such as uneven yarn, uneven yarn tension, cross-weave defects due to different dye affinities, twill defects due to dimensional deviations in warp and weft yarns, bird's-eye patterns due to loop weaves that contradict the fabric design, arcs caused by weft yarns running in an arc along the width of the fabric, broken warp yarns that have been repaired, broken weft yarns that have broken ends, mismatched patterns, scratches, spots, sags, torn weft yarns, holes, thick warp, and thick weft. Furthermore, the different yarn thicknesses of different fabric materials result in varying sizes and types of defects. Different types and sizes of defects cannot be detected from the front of the fabric. However, by acquiring first-image information of the fabric at different tilt angles, the defect detection parameters can be more comprehensive and richer, thus detecting defects that cannot be detected from the front of the fabric.

[0051] In some embodiments, reference Figure 1 , Figure 3 As shown, the base 1 has two adjustment grooves 201 on its top. The two adjustment grooves 201 are located below the first roller 102 and the second roller 103, respectively, and the extending direction of the adjustment grooves 201 is the same as the extending direction of the first roller 102 and the second roller 103. The limiting plate 2 includes a first limiting plate 21 and a second limiting plate 22. The bottom of the first limiting plate 21 and the second limiting plate 22 are provided with protrusions 202, and the protrusions 202 are slidably connected to the adjustment grooves 201.

[0052] When the width of the fabric is small, the width of the fabric is measured, and the distance between the first limiting plate 21 and the second limiting plate 22 is adjusted by the sliding engagement of the protrusion 202 and the adjusting groove 201. By moving the first limiting plate 21 and the second limiting plate 22 towards each other by the same distance, the fabric is kept in the middle position of the first roller 102 and the middle position of the second roller 103. At the same time, when passing through the first detection area and the second detection area, due to the limiting of the fabric at the beginning and end, the fabric is still in the middle position in the detection box 3, so as to avoid the positional deviation affecting the first image information and the second image information collected by the first acquisition camera 301 and the second acquisition camera 302.

[0053] In some embodiments, the width of the fabric can be measured in real time. Similarly, the width preset during fabric production can be transmitted and displayed on the terminal according to the fabric's design specifications, allowing direct adjustment of the distance between the first limiting plate 21 and the second limiting plate 22.

[0054] In some embodiments, the edge of the adjustment mechanism is provided with a scale, and the distance between the first limiting plate 21 and the second limiting plate 22 is adjusted using the visible scale according to the width of the fabric, so that the distance between the first limiting plate 21 and the second limiting plate 22 matches the width of the fabric.

[0055] The protrusions 202 of the first limiting plate 21 and the second limiting plate 22 slide in the adjustment groove 201 to limit the fabric. However, during the contact between the fabric and the limiting plate, the protrusions 202 may be subjected to force in the adjustment groove 201, causing the first limiting plate 21 and the second limiting plate 22 to slide in opposite directions and thus fail to achieve effective limiting.

[0056] In some embodiments, reference Figure 1 , Figure 3 , Figure 4As shown, a first adjusting screw 203 is rotatably provided along the extension direction of the adjusting groove 201. The first adjusting screw 203 includes a first part 2031 and a second part 2032, and the threads of the first part 2031 and the second part 2032 are arranged in opposite directions. The protrusion 202 is provided with a driving screw hole 204. The first limiting plate 21 is fitted with the first part 2031 of the first adjusting screw 203 through the driving screw hole 204, and the second limiting plate 22 is fitted with the second part 2032 of the first adjusting screw 203 through the driving screw hole 204. The first limiting plate 21 is sleeved on the first part 2031 of the first adjusting screw 203 through the drive screw hole 204, and the second limiting plate 22 is sleeved on the second part 2032 of the first adjusting screw 203 through the drive screw hole 204. When the screw is rotated, the first limiting plate 21 and the second limiting plate 22 can move towards each other or away from each other, thereby adjusting the distance between the first limiting plate 21 and the second limiting plate 22 at the same time. At the same time, when the first adjusting screw 203 stops rotating, due to the mutual connection between the first adjusting screw 203 and the drive screw hole 204, the first limiting plate 21 and the second limiting plate 22 are prevented from contacting the fabric and automatically moving away from each other, which also serves to limit the first limiting plate 21 and the second limiting plate 22.

[0057] The first part 2031 and the second part 2032 have the same length.

[0058] The bracket 101 is provided with a handle 205, which is fixedly connected to the first adjusting screw 203 for rotating the first adjusting screw 203. In order to facilitate the rotation of the first adjusting screw 203, the bracket 101 is provided with a handle 205, which makes it easier to rotate the first adjusting screw 203.

[0059] It is understandable that both the first end bracket 101 and the second end bracket 101 of the base 1 are equipped with handles 205 to realize the rotation of the first adjusting screw 203.

[0060] In some embodiments, the bracket 101 is equipped with a drive motor, the output shaft of which is connected to the first adjusting screw 203. The distance between the first limiting plate 21 and the second limiting plate 22 is adjusted by the drive motor. It is understood that both the bracket 101 at the first end and the bracket 101 at the second end of the base 1 are equipped with drive motors to rotate the first adjusting screw 203.

[0061] In some embodiments, reference Figure 2 , Figure 6As shown, the first transmission device includes: a transmission plate, a cylinder 304, a first guide roller 305, and a second guide roller 306. One end of the transmission plate 303 near the first roller 102 is hinged to the bottom of the base 1. The first guide roller 305 and the second guide roller 306 are arranged side-by-side along the direction from the first roller 102 to the second roller 103 on the side of the transmission plate 303 away from the base 1. One end of the cylinder 304 is hinged to the top of the base 1, and the other end is hinged to the side of the transmission plate 303 near the base 1. The acquisition direction of the first acquisition camera 301 is perpendicular to the bottom of the detection box 3.

[0062] By hinged to the cylinder 304 and the transmission plate 303, the transmission plate 303 can be positioned at a corresponding angle to the bottom of the inspection box 3 to detect different types of defects according to different needs. For example, when detecting coarse warp defects, the angle between the transmission plate 303 and the bottom of the inspection box 3 is 60°; when detecting coarse weft defects, the angle is 30°. This allows the first acquisition camera 301 to acquire first image information of the fabric being transported on the first transmission device at different angles. The fabric is transported by the first guide roller 305 and the second guide roller 306 arranged in parallel, moving from below the first guide roller 305 to above the second guide roller 306.

[0063] In some embodiments, reference Figure 2 As shown, the second transmission device includes a third guide roller 307 and a fourth guide roller 308, which are arranged side-by-side between the first transmission device and the discharge port 312 of the detection box 3. The acquisition direction of the second acquisition camera 302 is perpendicular to the plane formed by the third guide roller 307 and the fourth guide roller 308. The fabric is transmitted on the third guide roller 307 and the fourth guide roller 308, and the second acquisition camera 302, through appropriate settings, can acquire second image information of the front side of the fabric.

[0064] In some embodiments, the acquisition direction of the second acquisition camera 302 is perpendicular to the bottom of the detection box 3. The third guide roller 307 and the fourth guide roller 308 have the same specifications, and the third guide roller 307 and the fourth guide roller 308 are at the same distance from the bottom of the detection box 3. The second acquisition camera 302 is perpendicular to the plane formed by the third guide roller 307 and the fourth guide roller 308. Similarly, the acquisition direction of the second acquisition camera 302 is perpendicular to the plane of the fabric being transported on the third guide roller 307 and the fourth guide roller 308. The second acquisition camera 302 can acquire second image information of the front side of the fabric.

[0065] In some embodiments, the acquisition direction of the second acquisition camera 302 is perpendicular to the inlet 311 of the detection box 3, and the plane formed by the third guide roller 307 and the fourth guide roller 308 is perpendicular to the bottom of the detection box 3. Similarly, the acquisition direction of the second acquisition camera 302 is perpendicular to the plane formed by the third guide roller 307 and the fourth guide roller 308. Likewise, the acquisition direction of the second acquisition camera 302 is perpendicular to the plane of the fabric being transported on the third guide roller 307 and the fourth guide roller 308. The second image information of the front of the fabric can be acquired through the second acquisition camera 302.

[0066] It should be noted that the third guide roller 307, the fourth guide roller 308, and the second acquisition camera 302 can be installed according to the actual situation so that the acquisition direction of the second acquisition camera 302 is perpendicular to the plane formed by the third guide roller 307 and the fourth guide roller 308. No specific limitation is made here.

[0067] In some embodiments, by integrating first and second image information from different angles, the corresponding positions of the fabric acquired by the first and second image information are analyzed separately and overlapped. Areas with defects in the corresponding positions of the first image information but not in the corresponding positions of the second image information, or areas where the first image information is defect-free but the corresponding positions of the second image information are defect-free, are highlighted. Differences between the corresponding positions of the first and second image information are compared, and features are extracted from the defect-free features at the corresponding positions. The extracted features are stored and used as reference features. During defect detection, the reference features can be used for comparison. If the fabric exhibits features corresponding to the reference features, it is determined that the fabric has defects.

[0068] In some embodiments, reference Figure 1 As shown, both the first end bracket 101 and the second end bracket 101 are equipped with a first motor 104. The output shaft of the first motor 104 at the first end is fixedly connected to the first roller 102, and the output shaft of the first motor 104 at the second end is fixedly connected to the second roller 103. The specifications of the first motor 104 are the same.

[0069] The first motor 104 drives the first roller 102 and the second roller 103 to rotate, thereby realizing the transmission and winding of the fabric. The first motor 104 at the first end and the first motor 104 at the second end are of the same specification, so that the speed of fabric transmission and winding is the same, avoiding the situation of fabric dragging during transmission or the fabric being wound too fast, which would cause damage to the fabric.

[0070] The acquisition range of the first acquisition camera 301 and the second acquisition camera 302 can be determined. However, when acquiring first and second image information for fabrics of different widths, for wider fabrics, while acquiring first and second image information, the edges of the first and second image information acquired for relatively narrower fabrics are not related to the fabric. Therefore, when performing defect analysis on the edges, it is impossible to use the corresponding analysis methods to determine whether it is a real defect. Thus, it is necessary to adjust the edges of the first image information acquired by the first acquisition camera 301 and the second image information acquired by the second acquisition camera 302 to be related to the fabric, and the acquisition range of the first acquisition camera 301 and the acquisition range of the second camera should be adapted to the width of the fabric.

[0071] In some embodiments, reference Figure 2 As shown, the detection box 3 includes a first chamber 31. A camera adjustment mechanism is provided on the top of the first chamber 31. The camera adjustment mechanism includes a second adjusting screw 401, a lifting plate 402, a connecting rod 403, and a second motor 404. The second adjusting screw 401 is rotatably connected to the top of the first chamber 31 along the direction from the inlet 311 to the outlet 312 of the detection box 3. The second adjusting screw 401 includes a third part 4011 and a fourth part 4012. The threads of the third part 4011 and the fourth part 4012 are arranged in opposite directions. Both the third part 4011 and the fourth part 4012 are threadedly connected to a driving block 405. The driving block 405 is hinged to the connecting rod 403 on the side away from the top of the first chamber 31. The lifting plate 402 is hinged to the end of the connecting rod 403 away from the driving block 405. The first acquisition camera 301 and the second acquisition camera 302 are located on the side of the lifting plate 402 away from the connecting rod 403.

[0072] A second adjusting screw 401 is rotatably connected to the top of the first chamber 31 along the direction from the inlet 311 to the outlet 312 of the detection box 3. The rotation of the second adjusting screw 401 is driven by the second motor 404, which controls the drive blocks 405 of the third part 4011 and the fourth part 4012 to move towards each other or away from each other, so that the lifting plate 402 rises or falls. This allows the acquisition range of the first acquisition camera 301 and the second acquisition camera 302 below the lifting plate 402 to be adapted to the width of the fabric, and to acquire first and second image information for fabrics of different widths.

[0073] Part 3, 4011, and Part 4, 4012 have the same length.

[0074] Meanwhile, the camera adjustment mechanism can assist the first acquisition camera 301 and the second acquisition camera 302 in achieving focusing.

[0075] In some embodiments, the lifting plate 402 and the bottom of the detection box 3 are positioned at corresponding distances for different fabric widths. The distance between the lifting plate 402 and the bottom of the detection box 3 is adjusted according to the fabric width so that the acquisition range of the first acquisition camera 301 and the second acquisition camera 302 is adapted to the fabric width. For example, if the fabric width is 1m, then the distance between the lifting plate 402 and the bottom of the detection box 302 is 1.5m, enabling the first acquisition camera 301 and the second acquisition camera 302 to acquire all first and second image information within the fabric width range.

[0076] In some embodiments, reference Figure 2 As shown, the detection box 3 also includes a second chamber 32, which is located above the first chamber 31. The first chamber 31 is equipped with an identification terminal 321, which is connected to a first acquisition camera 301 and a second acquisition camera 302 for identifying defects in the first and second image information. The identification terminal 321 directly identifies the first and second image information to determine whether defects exist.

[0077] In some embodiments, the identification terminal 321 may include an image preprocessing module, a feature extraction module, a defect identification module, and an alarm module. The image preprocessing module preprocesses the acquired first and second image information, which may involve converting the first and second image information into single-channel images. Then, the feature extraction module extracts features from the preprocessed first and second image information to extract distinguishing features relative to a reference image. The defect identification module then identifies the distinguishing features and compares them with stored defect information to determine whether the distinguishing features are the same as the defect information. If they are the same, the distinguishing features can be identified as defects present on the fabric. If they are different, the distinguishing features are further judged to determine whether they are new defect types or not defects present on the fabric.

[0078] It should be noted that the reference image is a preset image of flawless fabric, while the defect information is a preset feature of existing defect types.

[0079] In some embodiments, the identification terminal 321 further includes a marking module, which may be an ultraviolet marking device. When a defect is detected on the fabric, the marking module marks the location of the defect, and then the defect is uniformly repaired.

[0080] In some embodiments, reference Figure 2 , Figure 5As shown, the feed inlet 311 of the detection box 3 is equipped with a fifth guide roller 501. A drive wheel 502 is fixedly mounted at one end of the fifth guide roller 501. A driven wheel 503 rotatably rotates between the fifth guide roller 501 and the first detection area. A fan 504 is fixedly connected to the driven wheel 503. The drive wheel 502 and the driven wheel 503 are connected by a conveyor belt. During the production or transport of the fabric, fine dust on the fabric is captured by the first and second acquisition cameras 301 and 302, entering the first and second image information. While dust is not a defect inherent in the fabric itself, its presence causes dust information to appear in the first and second image information. The recognition terminal 321 cannot determine whether the dust information constitutes a defect, increasing the uncertainty of defect detection. During the fabric transport process via the fifth guide roller 501, the drive wheel 502 rotates, causing the fan 504 on the driven wheel 503 to operate, removing the fine dust on the fabric and reducing the impact of dust on the defect detection results.

[0081] In some embodiments, the detection box 3 is provided with a magnetic device on one side opposite the fan 504. It is understood that fine dust particles are charged; while the fan 504 blows the fine dust particles off the fabric, the magnetic device attracts the dust, preventing it from falling back onto the fabric.

[0082] In some embodiments, the radius of the drive wheel 502 is larger than the radius of the driven wheel 503. Because the radius of the drive wheel 502 is larger than that of the driven wheel 503, the driven wheel 503 rotates at a higher speed due to the increased acceleration, which in turn causes the fan 504 to rotate at a higher speed, generating greater airflow and thus achieving a better cleaning effect on fine dust particles on the fabric.

[0083] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0084] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0085] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0086] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A fabric defect detection device, characterized in that, include: The base has supports at its first and second ends, with a first roller for conveying fabric rotatably mounted between the supports at the first end and a second roller for winding up fabric rotatably mounted between the supports at the second end. Limiting plates are adjustablely mounted on the first roller and the second roller, respectively, to limit the position of the fabric on the first roller and the second roller; A detection box is disposed between the first roller and the second roller. The detection box includes a first detection area and a second detection area. The first detection area includes a first acquisition camera and a first transmission device. The first acquisition camera is adapted to the position of the first transmission device. The first transmission device is used to adjust the transmission angle of the fabric so that the first acquisition camera can acquire the first image information of the fabric from different tilt angles of the fabric. The second detection area includes a second acquisition camera and a second transmission device. The second acquisition camera and the second transmission device are positioned adaptively, and the acquisition direction of the second acquisition camera is perpendicular to the second transmission device, so that the second acquisition camera acquires second image information of the fabric from the front side; wherein, The first transmission device includes: a transmission plate, a cylinder, a first guide roller, and a second guide roller; The end of the transmission plate near the first roller is hinged to the bottom of the base. The side of the transmission plate away from the base is provided with a first guide roller and a second guide roller in parallel along the direction from the first roller to the second roller. One end of the cylinder is hinged to the top of the base, and the other end is hinged to the side of the transmission plate near the base. The acquisition direction of the first acquisition camera is perpendicular to the bottom of the detection box; The second transmission device includes a third guide roller and a fourth guide roller, which are arranged side by side between the first transmission device and the discharge port of the detection box; the acquisition direction of the second acquisition camera is perpendicular to the plane formed by the third guide roller and the fourth guide roller.

2. The fabric defect detection equipment according to claim 1, characterized in that, The base has two adjustment slots on its top, which are located below the first roller and the second roller respectively, and the extension direction of the adjustment slots is the same as that of the first roller and the second roller respectively. The limiting plate includes a first limiting plate and a second limiting plate. Both the first limiting plate and the second limiting plate have protrusions at their bottoms, and the protrusions are slidably connected to the adjusting groove.

3. The fabric defect detection equipment according to claim 2, characterized in that, A first adjusting screw is provided rotatably along the extension direction of the adjusting groove. The first adjusting screw includes a first part and a second part, and the threads of the first part and the second part are arranged in opposite directions. The protrusion is provided with a drive screw hole, the first limiting plate sleeves the first part of the first adjusting screw through the drive screw hole, and the second limiting plate sleeves the second part of the first adjusting screw through the drive screw hole. The bracket is provided with a handle, which is fixedly connected to the first adjusting screw and used to rotate the first adjusting screw.

4. The fabric defect detection equipment according to claim 1, characterized in that, Both the first end bracket and the second end bracket are equipped with a first motor. The output shaft of the first motor at the first end is fixedly connected to the first roller, and the output shaft of the first motor at the second end is fixedly connected to the second roller. The first motors have the same specifications.

5. The fabric defect detection equipment according to claim 1, characterized in that, The testing box includes a first chamber; The top of the first chamber is provided with a camera adjustment mechanism, which includes: a second adjustment screw, a lifting plate, a connecting rod, and a second motor; The second adjusting screw is rotatably connected to the top of the first chamber along the direction from the inlet to the outlet of the detection box. The second adjusting screw includes a third part and a fourth part, and the threads of the third part and the fourth part are arranged in opposite directions. Both the third and fourth parts are threadedly connected to a drive block. A connecting rod is hinged to the side of the drive block away from the top of the first chamber. The lifting plate is hinged to the end of the connecting rod away from the drive block. The first acquisition camera and the second acquisition camera are located on the side of the lifting plate away from the connecting rod.

6. The fabric defect detection equipment according to claim 5, characterized in that, The detection box also includes a second chamber located above the first chamber. The first chamber is equipped with a recognition terminal, which is connected to the first acquisition camera and the second acquisition camera to identify defects in the first image information and the second image information.

7. The fabric defect detection equipment according to claim 1, characterized in that, The inlet of the detection box is equipped with a fifth guide roller. One end of the fifth guide roller is fixedly equipped with a drive wheel. A driven wheel is rotatably connected between the fifth guide roller and the first detection area. A fan is fixedly connected to the driven wheel. The drive wheel and the driven wheel are connected by a conveyor belt.

8. The fabric defect detection equipment according to claim 7, characterized in that, The radius of the driving wheel is larger than the radius of the driven wheel.

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