Light-emitting optical fiber cloth detection device

Abstract

The invention discloses a light-emitting optical fiber cloth detection device which comprises a base, an unwinding roller, a winding roller, a light-emitting mechanism and an image detection mechanism, the unwinding roller and the winding roller are installed on the two sides of the base respectively, the light-emitting mechanism comprises a driving assembly and two sets of light-emitting assemblies, and the two sets of light-emitting assemblies are located on the two sides of the optical fiber cloth conveying direction; the driving assembly is arranged on the base and used for driving the two light-emitting assemblies to be close to or away from each other, the two light-emitting assemblies are driven by the driving assembly to be close to the two sides of the cloth, the upper side and the lower side of the cloth are clamped through the first shielding cover and the second shielding cover, and therefore a closed light shielding space is formed; light emitted by the light source can enter from the optical fiber on one side of the fabric, so that the optical fiber fabric can emit light, and then the image detection mechanism carries out pattern shape similarity comparison detection on a to-be-detected light-emitting pattern and a standard light-emitting pattern of the optical fiber fabric.

Description

Technical Field

[0001] The invention discloses a luminous optical fiber cloth detection device, belonging to the technical field of luminous cloth detection. Background Art

[0002] With the development of society and the advancement of science and technology, there are luminous textile fabrics on the market today. These luminous textile fabrics are usually coated with a layer of reflective material or fluorescent powder on ordinary fabrics. The luminous condition is that it must be illuminated to glow. It cannot glow by itself in the dark. After repeated washing, the material coated on the textile fabric will fall off, and its service life is not long. At present, the luminous fabric is woven into the optical fiber during the weaving process of the main yarn. The position where the optical fiber needs to glow is worn in advance. When the light emitted by the light source enters the optical fiber, it cannot be fully emitted at the position where the optical fiber is worn, and escapes, thereby emitting light on the surface of the fabric. After the existing luminous optical fiber fabric is woven, the luminous pattern of the fabric needs to be detected to ensure that the luminous pattern meets the production needs. The detection method usually requires the optical fiber ports on both sides of the fabric to be manually connected to the light source. This method cannot achieve continuous detection, and each disassembly and assembly of the light source is also time-consuming and labor-intensive. At the same time, the luminous pattern is manually checked with the naked eye. When there is an error between the luminous pattern and the standard luminous pattern, manual detection cannot make an accurate judgment. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a luminous optical fiber cloth detection device.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions: a luminous optical fiber cloth detection device, comprising a base, a reel, a reel, a luminous mechanism and an image detection mechanism, wherein the reel and the reel are respectively installed on both sides of the base, and a power assembly is provided at one end of the reel, the luminous mechanism comprises a driving assembly and two groups of luminous assemblies, the two groups of luminous assemblies are located on both sides of the optical fiber cloth conveying direction, the driving assembly is arranged on the base, and is used to drive the two groups of luminous assemblies to approach or move away from each other, the luminous assembly comprises a sliding seat, a cylinder, a fixed shaft, a first shielding cover, a second shielding cover and a light source, the fixed shaft passes through the cylinder, and the two are fixedly connected by bolts, the fixed shaft is installed on the sliding seat The fixed shaft has a through groove at a position inside the cylinder, the light source is installed in the through groove, and the height of the light source is consistent with the conveying height of the optical fiber cloth, the cylinder has an opening on a side close to the optical fiber cloth, the first shielding cover and the second shielding cover are rotatably arranged on the outside of the cylinder, and the fixed shaft is provided with a transmission component for driving the first shielding cover and the second shielding cover to rotate to close the opening, the image detection mechanism includes a mounting frame, a camera component and an image comparison processing system, the camera component is arranged on the mounting frame, the image comparison processing system is coupled to the camera component, and the image comparison processing system compares the pattern shape similarity between the optical fiber cloth to be tested and the standard light-emitting pattern photographed by the camera component.

[0005] Preferably, the transmission assembly includes a first motor, a driving bevel gear, a first driven bevel gear and a second driven bevel gear, a fixed block is provided on the sliding seat, the first motor is mounted on the fixed block, the first driven bevel gear is fixed on the first shielding cover, the second driven bevel gear is fixed on the second shielding cover, the driving bevel gear is fixed on the output shaft of the first motor, and the driving bevel gear is meshed with the first driven bevel gear and the second driven bevel gear.

[0006] Preferably, the first shielding cover includes a first curved plate and a first fixed plate, two of the first fixed plates are provided and are integrally formed with the first curved plate, the second shielding cover includes a second curved plate and a second fixed plate, two of the second fixed plates are provided, one of the second fixed plates is integrally formed with the second curved plate, and the second driven bevel gear is fixed to the second fixed plate by bolts, and the other second fixed plate is fixedly connected to the second curved plate by bolts, one end of the first driven bevel gear passes through the second driven bevel gear and is fixedly connected to the first fixed plate by bolts, the fixed shaft passes through the first driven bevel gear and the first fixed plate, and the second fixed plate away from the second driven bevel gear is rotatably arranged on the outside of the first fixed plate.

[0007] Preferably, a rubber strip is provided on one side of the first shielding cover and the second shielding cover which are close to each other, and the inner walls of the cylinder, the first shielding cover and the second shielding cover are coated with a reflective coating.

[0008] Preferably, two groups of connecting parts are arranged between the fixed shaft and the cylinder, and the connecting parts include two semicircular fixing plates. An annular groove is arranged on the fixed shaft, and the two semicircular fixing plates are clamped inside the annular groove, and the semicircular fixing plates are fixedly connected to the cylinder by bolts.

[0009] Preferably, the driving assembly includes a second motor, a screw, a guide rod and a fixed seat, and two of the fixed seat and the guide rod are provided. The fixed seat is fixedly mounted on the base, and the screw and the guide rod are rotatably connected to the two fixed seats. The output shaft of the second motor is fixedly connected to one end of the screw, and the screw has two sections of threads with opposite rotation directions, and the screw is threadedly connected to the two sliding seats.

[0010] Preferably, the image contrast processing system includes an image preprocessing module, an image storage module and an image contrast module. The image preprocessing module is coupled to the photographic component, and after acquiring the optical fiber cloth luminous pattern photographed by the photographic component, the background of the optical fiber cloth is removed to obtain the luminous pattern to be measured. The image storage module is coupled to the image processing module, and after acquiring the luminous pattern to be measured, it is processed into a grayscale image. The image contrast module is coupled to the image storage module, and after acquiring the grayscale image, the pattern shape similarity is compared with the standard luminous pattern.

[0011] Preferably, the detection method for pattern shape similarity comparison comprises the following steps: S1: Divide the standard luminous pattern into a number of identification points according to each luminous pixel point; S2: mark the connection points A of all two adjacent contour lines of the grayscale image, the set of connection points A is {A1, A2, ..., AN}, mark the connection points B of all two adjacent contour lines of all standard luminous patterns, the set of connection points B is {B1, B2, ..., BN}, where AN and BN are one of the connection points; S3: Select any two connection points with the same features in the grayscale image and the standard luminous pattern to align and cover them, that is, A1 aligns with B1, AN aligns with BN, and the grayscale image is covered on the surface of the standard luminous pattern; S4: Count the number of identification points C in the standard luminous pattern covered by the grayscale image and the number of identification points D in the standard luminous pattern not covered by the grayscale image, and then calculate the pattern shape similarity F=C / (C+D); S5: Repeat steps S3 and S4, reselect the grayscale image and any other two connection points with the same features in the standard luminous pattern for point-to-point alignment and coverage, and obtain a set of calculation results of pattern shape similarity F as {F1, F2, ..., FN}, where FN is one of the calculation results. When the maximum calculation result FN in the set is ≥95%, it means that the luminous pattern to be tested of the optical fiber cloth meets the standard. When the maximum calculation result FN in the set is <95%, it means that the luminous pattern to be tested of the optical fiber cloth does not meet the standard, and a warning signal is issued.

[0012] Compared with the prior art, the present invention has the following beneficial effects: By setting up a light-emitting mechanism and an image detection mechanism, the optical fiber cloth is conveyed under the drive of a winding roller and a power component. The light-emitting mechanism can clamp the two sides of a certain light-emitting pattern of the optical fiber cloth and form a closed light-shielding space. The light emitted by the light source directly irradiates or reflects into the optical fiber. The light propagates in the optical fiber and forms a light-emitting pattern to be tested on the surface of the optical fiber cloth. Subsequently, the light-emitting pattern to be tested and the standard light-emitting pattern are compared for pattern shape similarity by means of the image detection mechanism, thereby detecting the weaving quality of the light-emitting pattern of the optical fiber cloth. Automatic and continuous detection can be achieved with high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a light-emitting optical fiber cloth detection device of the present invention; Figure 2 It is a schematic diagram of the structure of the driving component and the light-emitting component in the present invention; Figure 3 It is a schematic diagram of the structure of the light-emitting component and the transmission component in the present invention; Figure 4 An exploded view of the first shielding cover, the second shielding cover, the first driven bevel gear and the second driven vertical wheel in the present invention; Figure 5 It is a structural schematic diagram of the cylinder in the present invention; Figure 6 It is a schematic diagram of the structure of the fixed shaft and the connecting member in the present invention; : 1. base; 2. unwinding roller; 3. transmission assembly; 4. camera assembly; 5. mounting frame; 6. winding roller; 7. driving assembly; 8. light emitting assembly; 9. cylinder; 10. first shielding cover; 11. second shielding cover; 12. second driven bevel gear; 13. driving bevel gear; 14. first driven bevel gear; 15. screw; 16. sliding seat; 17. guide rod; 18. fixing block; 19. first motor; 20. second motor; 21. fixing seat; 22. fixing shaft; 23. connecting piece; 24. through groove; 25. light source; 26. first arc plate; 27. rubber strip; 28. first fixing plate; 29. ​​second arc plate; 30. second fixing plate; 31. opening; 32. semicircular fixing plate. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] like Figure 1-Figure 6 As shown, a luminous optical fiber cloth detection device includes a base 1, a reel 2, a reel 6, a luminous mechanism and an image detection mechanism, the reel 2 and the reel 6 are respectively installed on both sides of the base 1, and a power component is provided at one end of the reel 6, the luminous mechanism includes a driving component 7 and two groups of luminous components 8, the two groups of luminous components 8 are located on both sides of the optical fiber cloth conveying direction, the driving component 7 is arranged on the base 1, and is used to drive the two groups of luminous components 8 to approach or move away from each other, the luminous component 8 includes a sliding seat 16, a cylinder 9, a fixed shaft 22, a first shielding cover 10, a second shielding cover 11 and a light source 25, the fixed shaft 22 is arranged through the cylinder 9, and the two are fixedly connected by bolts, the fixed shaft 22 is installed on the sliding seat 16, and the fixed shaft 22 is located at A through groove 24 is provided at the inner side of the cylinder 9, a light source 25 is installed in the through groove 24, and the height of the light source 25 is consistent with the conveying height of the optical fiber cloth. The cylinder 9 has an opening 31 on the side close to the optical fiber cloth. The first shielding cover 10 and the second shielding cover 11 are rotatably arranged on the outer side of the cylinder 9. A transmission component 3 for driving the first shielding cover 10 and the second shielding cover 11 to rotate to close the opening 31 is provided on the fixed shaft 22. The image detection mechanism includes a mounting frame 5, a camera component 4 and an image comparison processing system. The camera component 4 is arranged on the mounting frame 5. The image comparison processing system is coupled to the camera component 4, and the image comparison processing system compares the pattern shape similarity between the optical fiber cloth to be tested and the standard light pattern photographed by the camera component 4.

[0016] The transmission assembly 3 includes a first motor 19, a driving bevel gear 13, a first driven bevel gear 14 and a second driven bevel gear 12. A fixing block 18 is provided on the sliding seat 16. The first motor 19 is mounted on the fixing block 18. The first driven bevel gear 14 is fixed on the first shielding cover 10. The second driven bevel gear 12 is fixed on the second shielding cover 11. The driving bevel gear 13 is fixed on the output shaft of the first motor 19, and the driving bevel gear 13 is meshed with the first driven bevel gear 14 and the second driven bevel gear 12. The first motor 19 drives the driving bevel gear 13 rotates, so that the active bevel gear 13 drives the first driven bevel gear 14 and the second driven bevel gear 12 to rotate in opposite directions, so that the first shielding cover 10 and the second shielding cover 11 can be driven to move synchronously, so that the first shielding cover 10 and the second shielding cover 11 can cover the opening 31 of the cylinder 9 to detect the luminous pattern of the optical fiber cloth, and when the first shielding cover 10 and the second shielding cover 11 no longer cover the opening 31 of the cylinder 9, the optical fiber cloth can be transported and fed, so as to detect the luminous pattern of the next position.

[0017] The first shielding cover 10 includes a first arc plate 26 and a first fixed plate 28, two of which are provided and are integrally formed with the first arc plate 26, and the second shielding cover 11 includes a second arc plate 29 and a second fixed plate 30, two of which are provided, one of which is integrally formed with the second arc plate 29, and the second driven bevel gear 12 is fixed to the second fixed plate 30 by bolts, and the other second fixed plate 30 is fixedly connected to the second arc plate 29 by bolts, one end of the first driven bevel gear 14 passes through the second driven bevel gear 12 and is fixedly connected to the first fixed plate 28 by bolts, the fixed shaft 22 passes through the first driven bevel gear 14 and the first fixed plate 28, and the second fixed plate 30 away from the second driven bevel gear 12 is rotatably provided on the outside of the first fixed plate 28, and the first shielding cover 10, the second shielding cover 11, the first driven bevel gear 14 and the second driven bevel gear 12 are arranged into a split structure, so that each component can be better installed on the cylinder 9 and the fixed shaft 22.

[0018] A rubber strip 27 is provided on the side where the first shielding cover 10 and the second shielding cover 11 are close to each other, and the inner walls of the cylinder 9, the first shielding cover 10 and the second shielding cover 11 are coated with a reflective coating. When the first shielding cover 10 and the second shielding cover 11 collide with each other, the rubber strip 27 can be deformed under pressure to avoid excessive squeezing of the optical fiber cloth. At the same time, it can also seal both sides of the first shielding cover 10 and the second shielding cover 11, thereby reducing the leakage of light emitted by the light source 25 to ensure that light enters all optical fibers.

[0019] Two groups of connecting parts 23 are arranged between the fixed shaft 22 and the cylinder 9. The connecting parts 23 include two semicircular fixing plates 32. An annular groove is arranged on the fixed shaft 22. The two semicircular fixing plates 32 are clamped in the inner side of the annular groove, and the semicircular fixing plates 32 are fixedly connected to the cylinder 9 by bolts. With this design structure, the fixed shaft 22 and the cylinder 9 can be fixedly connected, and the fixed shaft 22 and the sliding seat 16 can remain stationary, so that the cylinder 9 can also remain stationary when the first shielding cover 10 and the second shielding cover 11 rotate.

[0020] The driving assembly 7 includes a second motor 20, a screw 15, a guide rod 17 and a fixed seat 21. Two fixed seats 21 and guide rods 17 are provided. The fixed seat 21 is fixedly mounted on the base 1. The screw 15 and the guide rod 17 are rotatably connected to the two fixed seats 21. The output shaft of the second motor 20 is fixedly connected to one end of the screw 15. The screw 15 has two sections of threads with opposite rotation directions, and the screw 15 is threadedly connected to the two sliding seats 16. When the second motor 20 drives the screw 15 to rotate, the two sliding seats 16 can be moved in directions away from or close to each other, so that it can adapt to the detection of luminous patterns of optical fiber cloths with different widths. At the same time, the clamping position of the first shielding cover 10 and the second shielding cover 11 on the optical fiber cloth can be adjusted, so as to ensure that the detection of the luminous pattern is carried out smoothly. In this embodiment, the power assembly can use a motor or other power forms to drive the winding roller 6 to rotate, so as to realize the winding of the optical fiber cloth.

[0021] The image comparison processing system includes an image preprocessing module, an image storage module and an image comparison module. The image preprocessing module is coupled to the photographic component, and after obtaining the optical fiber cloth luminous pattern photographed by the photographic component, the background of the optical fiber cloth is removed to obtain the luminous pattern to be measured. The image storage module is coupled to the image processing module, and after obtaining the luminous pattern to be measured, the luminous pattern is processed into a grayscale image. The image comparison module is coupled to the image storage module, and after obtaining the grayscale image, the pattern shape similarity is compared with the standard luminous pattern.

[0022] The detection method of pattern shape similarity comparison includes the following steps: S1: Divide the standard luminous pattern into a number of identification points according to each luminous pixel point; S2: mark the connection points A of all two adjacent contour lines of the grayscale image, the set of connection points A is {A1, A2, ..., AN}, mark the connection points B of all two adjacent contour lines of all standard luminous patterns, the set of connection points B is {B1, B2, ..., BN}, where AN and BN are one of the connection points; S3: Select any two connection points with the same features in the grayscale image and the standard luminous pattern to align and cover them, that is, A1 aligns with B1, AN aligns with BN, and the grayscale image is covered on the surface of the standard luminous pattern; S4: Count the number of identification points C in the standard luminous pattern covered by the grayscale image and the number of identification points D in the standard luminous pattern not covered by the grayscale image, and then calculate the pattern shape similarity F=C / (C+D); S5: Repeat steps S3 and S4, reselect the grayscale image and any other two connection points with the same features in the standard luminous pattern for point-to-point alignment and coverage, and obtain a set of calculation results of pattern shape similarity F as {F1, F2, ..., FN}, where FN is one of the calculation results. When the maximum calculation result FN in the set is ≥95%, it means that the luminous pattern to be tested of the optical fiber cloth meets the standard. When the maximum calculation result FN in the set is <95%, it means that the luminous pattern to be tested of the optical fiber cloth does not meet the standard, and a warning signal is issued.

[0023] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A light-emitting optical fiber cloth detection device, comprising a base (1), a reel (2), a reel (6), a light-emitting mechanism and an image detection mechanism, characterized in that: The unwinding roller (2) and the winding roller (6) are respectively mounted on both sides of the base (1), and a power assembly is provided at one end of the winding roller (6). The light-emitting mechanism comprises a driving assembly (7) and two groups of light-emitting assemblies (8), the two groups of light-emitting assemblies (8) being located on both sides of the optical fiber cloth conveying direction. The driving assembly (7) is arranged on the base (1) and is used to drive the two groups of light-emitting assemblies (8) to move closer to or farther from each other. The light-emitting assembly (8) comprises a sliding seat (16), a cylinder (9), a fixed shaft (22), a first shielding cover (10), a second shielding cover (11) and a light source (25). The fixed shaft (22) is arranged to penetrate the cylinder (9), and the two are fixedly connected by bolts. The fixed shaft (22) is mounted on the sliding seat (16), and the fixed shaft (22) has a through groove (24) at a position located inside the cylinder (9). The light source (25) is installed in the through groove (24), and the height of the light source (25) is consistent with the conveying height of the optical fiber cloth. The cylinder (9) has an opening (31) on a side close to the optical fiber cloth. The first shielding cover (10) and the second shielding cover (11) are rotatably arranged on the outside of the cylinder (9). The fixed shaft (22) is provided with a transmission assembly (3) for driving the first shielding cover (10) and the second shielding cover (11) to rotate so as to close the opening (31). The image detection mechanism comprises a mounting frame (5), a camera assembly (4) and an image comparison processing system. The camera assembly (4) is arranged on the mounting frame (5). The image comparison processing system is coupled to the camera assembly (4). The image comparison processing system compares the light emission pattern of the optical fiber cloth to be tested captured by the camera assembly (4) with the standard light emission pattern for pattern shape similarity.

2. A light-emitting optical fiber cloth detection device according to claim 1, characterized in that: The transmission assembly (3) comprises a first motor (19), a driving bevel gear (13), a first driven bevel gear (14) and a second driven bevel gear (12); a fixing block (18) is provided on the sliding seat (16); the first motor (19) is mounted on the fixing block (18); the first driven bevel gear (14) is fixed on a first shielding cover (10); the second driven bevel gear (12) is fixed on a second shielding cover (11); the driving bevel gear (13) is fixed on an output shaft of the first motor (19); and the driving bevel gear (13) is meshed with the first driven bevel gear (14) and the second driven bevel gear (12).

3. A light-emitting optical fiber cloth detection device according to claim 2, characterized in that: The first shielding cover (10) comprises a first arc-shaped plate (26) and a first fixing plate (28), two of which are provided and are integrally formed with the first arc-shaped plate (26); the second shielding cover (11) comprises a second arc-shaped plate (29) and a second fixing plate (30), two of which are provided, one of which is integrally formed with the second arc-shaped plate (29), and the second driven bevel gear (12) is fixed to the second fixing plate (30) by bolts, and the other of which is fixedly connected to the second arc-shaped plate (29) by bolts; one end of the first driven bevel gear (14) passes through the second driven bevel gear (12) and is fixedly connected to the first fixing plate (28) by bolts; the fixing shaft (22) passes through the first driven bevel gear (14) and the first fixing plate (28), and the second fixing plate (30) away from the second driven bevel gear (12) is rotatably provided on the outside of the first fixing plate (28).

4. The luminous optical fiber cloth detection device according to claim 1, characterized in that: A rubber strip (27) is provided on one side of the first shielding cover (10) and the second shielding cover (11) that are close to each other, and the inner walls of the cylinder (9), the first shielding cover (10) and the second shielding cover (11) are coated with a reflective coating.

5. The luminous optical fiber cloth detection device according to claim 1, characterized in that: Two groups of connecting members (23) are provided between the fixed shaft (22) and the cylinder (9), and the connecting members (23) include two semicircular fixing plates (32). An annular groove is provided on the fixed shaft (22), and the two semicircular fixing plates (32) are clamped inside the annular groove. The semicircular fixing plates (32) are fixedly connected to the cylinder (9) by bolts.

6. The luminous optical fiber cloth detection device according to claim 1, characterized in that: The driving assembly (7) comprises a second motor (20), a screw (15), a guide rod (17) and a fixed seat (21). Two of the fixed seat (21) and the guide rod (17) are provided. The fixed seat (21) is fixedly mounted on the base (1). The screw (15) and the guide rod (17) are rotatably connected to the two fixed seats (21). The output shaft of the second motor (20) is fixedly connected to one end of the screw (15). The screw (15) has two sections of threads with opposite rotation directions, and the screw (15) is threadedly connected to the two sliding seats (16).

7. The luminous optical fiber cloth detection device according to claim 1, characterized in that: The image comparison and processing system includes an image preprocessing module, an image storage module and an image comparison module. The image preprocessing module is coupled to the photographic component, and after acquiring the optical fiber cloth luminous pattern photographed by the photographic component, the background of the optical fiber cloth is removed to obtain the luminous pattern to be measured. The image storage module is coupled to the image processing module, and after acquiring the luminous pattern to be measured, the luminous pattern is processed into a grayscale image. The image comparison module is coupled to the image storage module, and after acquiring the grayscale image, the pattern shape similarity is compared with the standard luminous pattern.

8. The light-emitting optical fiber cloth detection device according to claim 7, characterized in that: The detection method for pattern shape similarity comparison comprises the following steps: S1: Divide the standard luminous pattern into a number of identification points according to each luminous pixel point; S2: mark the connection points A of all two adjacent contour lines of the grayscale image, the set of connection points A is {A1, A2, ..., AN}, mark the connection points B of all two adjacent contour lines of all standard luminous patterns, the set of connection points B is {B1, B2, ..., BN}, where AN and BN are one of the connection points; S3: Select any two connection points with the same features in the grayscale image and the standard luminous pattern for point-to-point alignment, i.e., A1 is aligned with B1, AN is aligned with BN, and the grayscale image is covered on the surface of the standard luminous pattern; S4: Count the number of identification points C in the standard luminous pattern covered by the grayscale image and the number of identification points D in the standard luminous pattern not covered by the grayscale image, and then calculate the pattern shape similarity F=C / (C+D); S5: Repeat steps S3 and S4, reselect the grayscale image and any other two connection points with the same features in the standard luminous pattern for point-to-point alignment and coverage, and obtain a set of calculation results of pattern shape similarity F as {F1, F2, ..., FN}, where FN is one of the calculation results. When the maximum calculation result FN in the set is ≥95%, it means that the luminous pattern to be tested of the optical fiber cloth meets the standard. When the maximum calculation result FN in the set is <95%, it means that the luminous pattern to be tested of the optical fiber cloth does not meet the standard, and a warning signal is issued.

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