Fiber diameter and cross-section measurement system

Abstract

The present invention provides a fiber diameter and cross-section measurement system, including a fiber diameter cross-section measurement system and a sample acquisition device; the sample acquisition device includes a camera, an objective lens, a transmission light source and a fiber sample, and the camera and the objective lens are coaxially arranged; the fiber sample is disc-shaped, and holes for sample preparation are evenly arranged in its circumferential direction; the fiber sample is arranged facing the objective lens, and can rotate under the drive of a driving device, and move along the extension direction of the objective lens; the fiber diameter cross-section measurement system is connected to the camera and the driving device, and is used to control the camera to collect the fiber cross-section image of the hole, control the operation of the driving device, and fuse multiple fiber cross-section images of a single hole, identify the fiber cross-section based on artificial intelligence, outline the fiber cross-section profile from the image, analyze the fiber cross-section profile, and obtain the cross-sectional area and diameter information of the fiber. Based on the sample acquisition device and artificial intelligence technology, the present invention can realize automatic recognition of fiber diameter and cross-sectional area, improve work efficiency, and save manpower loss.

Description

Technical Field

[0001] The invention belongs to the technical field of fiber measurement, and in particular relates to a fiber diameter and cross-section measurement system. Background Art

[0002] At present, some detection methods can only measure the diameter of the fiber, such as optical microscope projection method, laser scanning fiber diameter analysis method, etc. Among them, the optical microscope projection method is to magnify the image of the fiber segment 500 times and project it onto the screen, use a millimeter scale through the center of the screen circle to measure the width at the intersection with the fiber orthogonal to the fiber, or use a wedge ruler to measure the fiber diameter within the screen circle, record the measurement results one by one, and calculate the average diameter.

[0003] Although some equipment (microscopes, cameras, software, etc.) can collect fiber diameter and cross-sectional information, they cannot automatically identify the fibers in the image and require manual identification. Therefore, a technical solution that can automatically identify fiber diameter and cross-sectional information is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a fiber diameter and cross-section measurement system to realize automatic identification of fiber diameter and cross-sectional area, improve work efficiency and save manpower loss.

[0005] The present invention provides a fiber diameter and cross-section measurement system, including a fiber diameter and cross-section measurement system and a sample collection device;

[0006] The sample acquisition device comprises a camera, an objective lens, a transmission light source and a fiber sample, wherein the camera and the objective lens are coaxially arranged; the fiber sample is in the shape of a disk, and holes for sample preparation are evenly arranged in the circumferential direction thereof; the fiber sample is arranged facing the objective lens, and can rotate under the drive of a driving device, and move along the extension direction of the objective lens;

[0007] The fiber diameter cross-section measurement system is connected to the camera and the driving device, and is used to control the camera to collect fiber cross-section images of the hole position, control the operation of the driving device, and fuse multiple fiber cross-section images of a single hole position, identify the fiber cross-section based on artificial intelligence, outline the fiber cross-section contour from the image, analyze the fiber cross-section contour, and obtain the cross-sectional area and diameter information of the fiber.

[0008] Furthermore, the camera is provided with a camera connecting tube, and the objective lens is provided with an objective lens connecting tube. The camera, camera connecting tube, objective lens connecting tube and objective lens are coaxially connected in sequence, and the camera connecting tube and objective lens connecting tube are used to adjust the distance between the camera and the objective lens.

[0009] Furthermore, the driving device includes a rotation direction motor and an objective lens direction motor; the fiber sample is fixedly connected to the output shaft of the rotation direction motor through a gasket, and can rotate under the drive of the rotation direction motor; the objective lens direction motor controls the movement of the translation slide, and the translation slide is connected to the rotation direction motor, and is used to drive the fiber sample to move along the extension direction of the objective lens through the translation slide.

[0010] Furthermore, the sample acquisition device also includes limit optical couplers arranged at both ends of the translation slide, which are used to control the stroke in the extension direction of the objective lens, and a rotation origin optical coupler arranged in the rotation direction of the fiber sample.

[0011] Furthermore, the sample collection device also includes a focusing tube, and a reflector is provided at the front end of the focusing tube. The reflector is coaxially arranged with the objective lens and is used to make the light emitted by the transmitted light source refracted by the reflector at 90 degrees and then incident on the objective lens.

[0012] Furthermore, the sample acquisition device also includes a bracket and a base plate, the bracket is connected to the camera connecting tube, the objective lens connecting tube and the base plate, and the driving device is connected to the base plate.

[0013] Furthermore, the hole positions of the fiber sample consist of 40 circular holes with a diameter of 1 mm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This system can collect images of multi-point fiber cross-sections at one time through the sample collection device, saving the time of multiple sample collections; this system fuses the collected images, and the fused images restore the cross-sectional images of the fibers to the greatest extent, providing real and effective fiber cross-sectional information for AI recognition; this system recognizes fiber cross-sections through AI, greatly saving the time of manual recognition and greatly improving work efficiency; this system uses a fiber diameter cross-section measurement system for measurement, reducing errors caused by human factors, with high accuracy and simple operation, while facilitating data analysis, statistics, storage and query. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the fiber diameter and cross-section measurement system of the present invention;

[0017] Figure 2 The structure of the sample collection device of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 3 The structure of the sample collection device of the present invention is shown in FIG. Figure 2 ;

[0019] Figure 4It is a schematic diagram of the sample structure of the present invention.

[0020] Numbers in the figure:

[0021] 1-base plate; 2-camera (camera); 3-camera connecting tube; 4-bracket; 5-objective lens connecting tube; 6-objective lens; 7-condensing tube; 8-objective lens direction motor; 9-rotation origin optical coupler; 10-right limit optical coupler; 11-translation slide; 12-fiber sample; 121-circular hole; 13-gasket; 14-transmitted light source; 15-rotation direction motor; 16-left limit optical coupler. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0023] Ginseng Figures 1 to 4 As shown, this embodiment provides a fiber diameter and cross-section measurement system, including a fiber diameter and cross-section measurement system and a sample collection device;

[0024] The sample acquisition device includes a camera 2, an objective lens 6 and a fiber sample 12, wherein the camera 2 and the objective lens 6 are coaxially arranged; the fiber sample 12 is in the shape of a disk, and holes for sample preparation are evenly arranged in the circumferential direction thereof; the fiber sample 12 is arranged facing the objective lens 6, and can rotate under the drive of the driving device, and move along the extension direction of the objective lens 6;

[0025] The fiber diameter cross-section measurement system is connected to camera 2 and a driving device, and is used to control camera 2 to collect fiber cross-section images of the hole position, control the operation of the driving device, and fuse multiple fiber cross-section images of a single hole position, identify the fiber cross-section based on artificial intelligence, outline the fiber cross-section contour from the image, analyze the fiber cross-section contour, and obtain the cross-sectional area and diameter information of the fiber.

[0026] This system can collect images of multi-point fiber cross sections at one time through the sample acquisition device, saving the time of multiple sample acquisitions; this system fuses the collected images, and the fused images restore the cross-sectional images of the fibers to the greatest extent, providing real and effective fiber cross-sectional information for AI recognition; this system recognizes the fiber cross sections through AI, greatly saving the time of manual recognition and greatly improving work efficiency; this system uses a fiber diameter cross-sectional measurement system for measurement, reducing the error of human factors, with high accuracy and simple operation, and facilitating data analysis, statistics, storage and query. In this embodiment, the camera 2 is provided with a camera connecting tube 3, and the objective lens 6 is provided with an objective lens connecting tube 5. The camera 2, the camera connecting tube 3, the objective lens connecting tube 5 and the objective lens 6 are coaxially connected in sequence, and the camera connecting tube 3 and the objective lens connecting tube 5 are used to adjust the distance between the camera 2 and the objective lens 6.

[0027] In this embodiment, the driving device includes a rotation direction motor 15 and an objective lens direction motor 8 (controlling the movement of the sample relative to the objective lens, with a movement accuracy of 0.01 mm); the fiber sample 12 is fixedly connected to the output shaft of the rotation direction motor 15 through a gasket 13 (to reduce the error in the transmission process), and can rotate under the drive of the rotation direction motor 15; the objective lens direction motor 8 is connected to the rotation direction motor 15 through a translation slide 11, and is used to drive the fiber sample 12 to move along the extension direction of the objective lens 6 through the translation slide 11.

[0028] In this embodiment, the sample acquisition device also includes a limit optical coupler (right limit optical coupler 10, left limit optical coupler 16) arranged in the extension direction of the objective lens 6, and a rotation origin optical coupler 9 (used for finding the origin in the rotation direction) arranged in the rotation direction of the fiber sample 12.

[0029] In this embodiment, the sample collection device also includes a focusing tube 7 and a transmitted light source 14 (with a power of 35 W). In order to shorten the optical path and maximize the light intensity of the sample, a reflector is arranged at the front end of the focusing tube 7. The reflector is coaxially arranged with the objective lens 6 to make the light emitted by the transmitted light source 14 bend 90 degrees and enter the direction of the objective lens 6.

[0030] In this embodiment, the sample acquisition device further includes a bracket 4 and a base plate 1 , the bracket 4 is connected to the camera connecting tube 3 , the objective lens connecting tube 5 and the base plate 1 , and the driving device is connected to the base plate 1 .

[0031] In this embodiment, the hole positions of the fiber sample 12 are composed of 40 circular holes 121 with a diameter of 1 mm. Samples are prepared and observed in each circular hole. 40 hole positions can be measured at one time, which far exceeds the number of fiber sample diameter measurement requirements. 40 sample information can be collected at the same time to achieve batch processing. The fiber sample 12 adopts a structure of multiple circular holes with a diameter of 1 mm, which can not only ensure the planar effect of the fiber cross section after cutting, but also ensure one-time sampling and multi-point collection to meet the requirements for the number of fiber measurement roots (if the fiber bundle is fixed in the aperture of the large cross section, when cutting, too many transverse fibers in the fiber bundle will affect the imaging effect of the fiber cross section, so multiple small holes are used).

[0032] In this embodiment, the camera 2 can be a Basler camera, which supports a frame rate of 40fps and communicates with the computer via USB. The fiber diameter cross-section measurement system controls the continuous acquisition of images, and collects 10 images per second. The objective lens 6 can be a 10x objective lens, which magnifies the fiber cross section by 10, so as to better analyze the cross section.

[0033] The system workflow is as follows:

[0034] 1. Power on the sample collection device, open the fiber diameter section measurement system (the fiber diameter section measurement software on the computer), and initialize the system (find the origin of the sample collection device, walk to the first collection hole in parallel, and turn on the light source);

[0035] 2. The fiber diameter cross-section measurement system can select the acquisition hole positions. If no selection is made, all 40 hole positions will be acquired by default. Click the "Automatic Measurement" button to start acquiring sample images.

[0036] 3. Automatic measurement process: Control the camera to collect images at a collection frequency of 40 images / s, and the objective lens direction motor controls the fiber sample to move 1mm at a speed of 0.1mm / s. A total of 400 images are collected for each hole. After one hole is collected, rotate to the next hole and collect again until all holes are collected;

[0037] 4. After collecting an image of each hole, perform image fusion to improve the quality of the fiber cross-section image and make the cross-section of each part of the fiber in the hole clearer;

[0038] 5. Use AI technology to identify the fiber cross-section of the fused fiber cross-section image and outline the fiber cross-section contour from the image;

[0039] 6. Analyze the fiber profile to obtain information such as the cross-sectional area and average diameter of the fiber;

[0040] 7. Output the report file and complete the output printing of the measurement data.

[0041] This process automatically collects multi-point images and automatically analyzes and outputs various parameter information of the fiber cross section through one sampling, which is easy to operate.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A fiber diameter and cross-section measurement system, characterized in that: It includes a fiber diameter cross-section measuring system and a sample collecting device; The sample acquisition device comprises a camera, an objective lens, a transmission light source and a fiber sample, wherein the camera and the objective lens are coaxially arranged; the fiber sample is in the shape of a disk, and holes for sample preparation are evenly arranged in the circumferential direction thereof; The fiber sample is arranged facing the objective lens, and can be driven by a driving device to perform rotational motion and move along the extension direction of the objective lens; The fiber diameter cross-section measurement system is connected to the camera and the driving device, and is used to control the camera to collect fiber cross-section images of the hole position, control the operation of the driving device, and fuse multiple fiber cross-section images of a single hole position, identify the fiber cross-section based on artificial intelligence, outline the fiber cross-section profile from the image, analyze the fiber cross-section profile, and obtain the cross-sectional area and diameter information of the fiber; The camera is provided with a camera connecting tube, the objective lens is provided with an objective lens connecting tube, the camera, the camera connecting tube, the objective lens connecting tube, and the objective lens are coaxially connected in sequence, and the camera connecting tube and the objective lens connecting tube are used to adjust the distance between the camera and the objective lens; The sample collection device also includes position-limiting optical couplers arranged at both ends of the translation slide, and a rotation origin optical coupler arranged in the rotation direction of the fiber sample; The sample collection device also includes a condenser tube, a reflector is provided at the front end of the condenser tube, and the reflector is coaxially arranged with the objective lens, so as to refract the light emitted by the transmission light source by 90 degrees and then enter the direction of the objective lens; The sample acquisition device also includes a bracket and a bottom plate. The bracket is connected to the camera connecting tube, the objective lens connecting tube and the bottom plate. The driving device is connected to the bottom plate.

2. The fiber diameter and cross-section measurement system according to claim 1, characterized in that: The driving device includes a rotation direction motor and an objective lens direction motor; the fiber sample is fixedly connected to the output shaft of the rotation direction motor through a gasket and can rotate under the drive of the rotation direction motor; The objective lens direction motor is connected to the rotation direction motor via a translation slide, and is used to drive the fiber sample to move along the extension direction of the objective lens via the translation slide.

3. The fiber diameter and cross-section measurement system according to claim 1, characterized in that: The hole positions of the fiber sample consist of 40 circular holes with a diameter of 1 mm.

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