Optical fiber diameter measuring and concave-convex measuring integrated device

Abstract

The utility model relates to an optical fiber diameter measuring and concave-convex measuring integrated device, which is characterized in that three groups of shooting systems are designed, and focusing backlight shooting is carried out on an optical fiber to be measured from different directions through a focusing design under a mechanical structure according to the posture that the optical axis of the shooting direction of each image shooting device (2) vertically points to the optical fiber to be measured; the integrated function application of optical fiber diameter measurement and optical fiber concave-convex detection is completed; the device can complete 300,000 times of accurate measurement per second in a 3km / min high-speed wire drawing state, the diameter measurement precision reaches 1 micron, concave-convex defects of 5-400 microns can be effectively detected, and the efficiency and precision of optical fiber diameter measurement and concave-convex detection are integrally improved.

Description

Technical Field

[0001] The utility model relates to an integrated device for measuring diameter and concavity of an optical fiber, belonging to the technical field of optical fiber detection. Background Art

[0002] Fiber diameter measurement and concave-convex defect detection are widely used in fiber manufacturing and quality control. Fiber diameter measurement mainly evaluates the quality and performance of optical fiber by accurately measuring the fiber diameter, and the main task of concave-convex defect detection is to detect the concave-convex degree of the fiber surface. At present, domestic fiber diameter measurement and concave-convex defect detection equipment cannot be applied to ultra-high-speed real-time detection of tiny optical fibers, and the detection speed cannot reach 50m / s, and the detection frequency is not high. In addition, the existing fiber diameter measurement operation and fiber concave-convex defect detection operation require two devices. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an integrated device for measuring diameter and convexity of optical fiber, which can realize high-speed measurement and effectively improve the measurement accuracy.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the utility model designs an integrated device for measuring the diameter and convexity of an optical fiber, which is used for real-time detection of an optical fiber to be measured, and is characterized in that: it includes three groups of shooting systems, wherein each group of shooting systems includes a light source, an image shooting device, and a moving base, and in the structure of each group of shooting systems, the image shooting device is arranged on the moving base, and the image shooting device moves along the straight line with the back and forth movement of the moving base, and the optical axis of the shooting direction of the image shooting device is parallel to the straight line where the moving direction is located;

[0005] The optical fiber to be tested is transported along a straight path, and the image capturing devices and the mobile base in each group of shooting systems are arranged around the straight conveying path of the optical fiber to be tested. The optical axes of the shooting directions of each image capturing device point to the straight conveying path of the optical fiber to be tested, and the optical axes of the shooting directions of adjacent image capturing devices form a preset angle with each other, and the optical axes of the shooting directions of each image capturing device are not coplanar. The light sources in each group of shooting systems are respectively located on the optical axes of the shooting directions of the corresponding image capturing devices, and the straight conveying path of the optical fiber to be tested is located between the image capturing devices and the corresponding light sources in each group of shooting systems. Based on the operation of each light source, each image capturing device focuses on the optical fiber to be tested based on the movement of its mobile base to achieve backlight shooting.

[0006] As a preferred technical solution of the utility model: among the three shooting systems, the structure of the first shooting system is the same as that of the second shooting system, the moving base in the first shooting system and the moving base in the second shooting system are both electrically controlled sliding modules, the image shooting device is arranged on a movable carrier in the electrically controlled sliding module, and the image shooting device moves along the straight line with the back and forth movement of the movable carrier; the moving base in the third shooting system is a fine-tuning base, the image shooting device is arranged on the fine-tuning base, and the setting position of the fine-tuning base is adjusted back and forth along a direction parallel to the optical axis of the shooting direction of the image shooting device connected thereto.

[0007] As a preferred technical solution of the utility model: the electric control sliding module also includes a motor, a coupling, a linear module, and a base, wherein the linear module includes a base with a linear slide groove on the upper surface, and a lead screw, a protrusion in a linear direction is arranged on the lower surface of the movable carrier, and the linear direction of the protrusion is parallel to the optical axis of the shooting direction of the image shooting device arranged on the movable carrier, and the shape and outer diameter of the cross-section of the protrusion are adapted to the shape and inner diameter of the cross-section of the slide groove on the upper surface of the base, the protrusion on the lower surface of the movable carrier is movably placed in the slide groove on the upper surface of the base, and the movable carrier moves as its protrusion moves back and forth in the straight line in the slide groove on the upper surface of the base A linear through hole passing through two opposite sides of the movable carrier is arranged on the movable carrier, and the straight line where the through hole is located is parallel to the linear movement direction of the movable carrier, the inner diameter of the through hole is adapted to the outer diameter of the lead screw, and an internal thread matching the external thread of the lead screw is arranged on the inner wall of the through hole, the lead screw rotates through the through hole on the movable carrier, the base is arranged on the upper surface of the base, the motor is arranged on one end of the base corresponding to the linear movement direction of the movable carrier, the driving shaft of the motor is connected to one end of the coupling, and the other end of the coupling is connected to one end of the lead screw, based on the operation of the motor, the lead screw is driven to rotate axially through the coupling, and the movable carrier is driven by the lead screw to move linearly along the slide groove on the base.

[0008] As a preferred technical solution of the utility model: the electrically controlled sliding module also includes a photoelectric switch, which is arranged on the base and is located on the side of the base in the linear module corresponding to the slide groove thereon, and the photoelectric switch is used to mark the starting point position of the movable carrier.

[0009] As a preferred technical solution of the utility model: it also includes a lens protection component including a linear sleeve device with open ends and mutually interpenetrating, the sleeve device is located on the linear conveying path of the optical fiber to be tested and is sleeved around the outer side of the optical fiber to be tested, the center line of the sleeve device is parallel to the linear conveying path of the optical fiber to be tested, and through holes are set around the side of the sleeve device corresponding to each position where the optical axis of the shooting direction of each image shooting device passes through, and transparent glass is embedded in each through hole, and the light sources in each group of shooting systems work separately and illuminate the optical fiber to be tested through the transparent glass in the side through hole of the sleeve device facing it, and the image shooting devices in each group of shooting systems respectively shoot the optical fiber to be tested with backlight through the transparent glass in the side through hole of the sleeve device facing it.

[0010] As a preferred technical solution of the utility model: it also includes a box body, which includes an upper cover plate, an outer frame, a bottom frame, and a bottom plate, wherein the outer frame is arranged around the periphery of each group of shooting systems, based on the lens protection component and the overall structure of each group of shooting systems, the height of the upper edge of the outer frame perpendicular to the surface of the outer frame as a whole is greater than the maximum height of the overall structure along this direction, the shape and size of the bottom frame are the same as the shape and size of one side of the outer frame, the bottom frame is connected to the side of the outer frame, the shape and size of the bottom plate are adapted to the shape and size of the bottom frame, the edge of the bottom plate is detachably connected to the bottom frame, and the movable bases in each group of shooting systems are respectively arranged on the bottom plate On the surface of the side facing the outer frame, and each light source is respectively arranged on the surface of the bottom plate facing the outer frame through a light source mounting bracket, a through hole is arranged on the bottom plate corresponding to the position of the sleeve device in the lens protection assembly, the inner diameter of the through hole is adapted to the outer diameter of the sleeve device, one end of the through hole on the sleeve device facing the bottom plate is butted against the through hole, the shape and size of the upper cover plate are adapted to the shape and size of the bottom plate, the upper cover plate is detachably placed on a circle of the edge of the outer frame facing away from the bottom plate, a through hole is arranged on the upper cover plate corresponding to the position of the sleeve device in the lens protection assembly, the inner diameter of the through hole is adapted to the outer diameter of the sleeve device, one end of the through hole on the sleeve device facing the upper cover plate is butted against the through hole.

[0011] As a preferred technical solution of the utility model: a cut is set from the side of the box toward the inside, and the cut extends to the inside of the sleeve device in the lens protection assembly, and the cut passes through the upper cover plate, bottom frame, and bottom plate of the box; the gap between the two side surfaces in the cut is larger than the diameter of the optical fiber to be measured.

[0012] As a preferred technical solution of the present utility model: the box body also includes a fan and a filter group, wherein two through holes penetrating the two sides of the outer frame are respectively arranged on the side surfaces, and the through holes correspond to the fan and the filter group one by one respectively, and the shape and outer diameter of the fan periphery are adapted to the shape and inner diameter of the through holes on the side surfaces of the corresponding outer frame, and the fan is embedded in the through holes on the side surfaces of the corresponding outer frame, and the shape and outer diameter of the filter group periphery are adapted to the shape and inner diameter of the through holes on the side surfaces of the corresponding outer frame, and the filter group is embedded in the through holes on the side surfaces of the corresponding outer frame.

[0013] As a preferred technical solution of the utility model: the box body also includes a wire hole penetrating through a preset position on the side surface of its outer frame, which is used to realize wired connection between various electrical devices in the box body and devices outside the box body.

[0014] As an optimal technical solution of the utility model: it also includes a calibration component, the calibration component includes a calibration platform, a calibration rod seat, a limiting ring, a calibration rod, and at least three supporting columns, wherein a limiting hole of the supporting column is arranged on the surface of the calibration platform, the calibration rod seat is cylindrical, and the cylindrical outer diameter of the calibration rod seat is adapted to the inner diameter of the upper limit hole of the calibration platform, the limiting ring is fixedly sleeved on the outer circumference of the calibration rod seat, the outer diameter of the limiting ring is larger than the inner diameter of the upper limit hole of the calibration platform, one end of the calibration rod seat is moved up and down on the calibration platform to pass through the limiting hole on the surface of the calibration platform, and the downward movement of the calibration rod seat is limited based on the bottom of the limiting ring, the end of the calibration rod seat that passes through the limiting hole on the surface of the calibration platform is connected to one end of the calibration rod, and the central axis of the calibration rod seat is collinear with the straight line where the calibration rod is located, and the collinearity is aligned with the surface of the calibration platform facing away from the limiting ring. Vertically, the outer diameter of the calibration rod is smaller than the inner diameter of the sleeve device in the lens protection assembly, and smaller than the field of view of the image shooting device, one end of each support column is respectively connected to the surface of the calibration platform facing away from the limit ring, and the connection position of each support column is distributed around the through hole on the calibration platform, and each support column is respectively perpendicular to the surface of the calibration platform facing away from the limit ring; the surface of the bottom plate in the box body corresponds to the outer periphery area of ​​the connected sleeve device end, and each socket penetrating the surface of the bottom plate is respectively arranged, the number of sockets on the bottom plate is the same as the number of support columns, and each support column corresponds to each socket on the bottom plate in position one by one. During calibration, the lens protection assembly is removed, and the calibration assembly is inserted into each socket on the surface of the bottom plate based on its each support column, and the image shooting device in each group of shooting systems realizes focus calibration of the calibration rod.

[0015] The optical fiber diameter measurement and concave-convex measurement integrated device described in the utility model adopts the above technical solution and has the following technical effects compared with the prior art:

[0016] The utility model designs an integrated device for measuring fiber diameter and concave-convexity. It designs three sets of shooting systems. With the shooting direction optical axis of each image shooting device pointing vertically to the optical fiber to be tested, the optical fiber to be tested is backlit and focused from different directions through the focusing design under the mechanical structure, completing the integrated functional application of optical fiber diameter measurement and optical fiber concave-convexity detection. The equipment can complete 300,000 accurate measurements per second under the high-speed wire drawing state of 3km / min, with a diameter measurement accuracy of 1μm, and can effectively detect concave-convex defects of 5-400um in size, which improves the efficiency and accuracy of optical fiber diameter measurement and concave-convexity detection as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view schematic diagram of three groups of shooting systems in the integrated optical fiber diameter measurement and concave-convex measurement device designed by the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the electric control sliding module in the integrated optical fiber diameter measurement and concave-convex measurement device designed by the utility model;

[0019] Figure 3 This is a schematic diagram of the top view of the interior of the box in the integrated optical fiber diameter measurement and concave-convex measurement device designed in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the lens protection assembly in the integrated optical fiber diameter measurement and concave-convex measurement device designed by the utility model;

[0021] Figure 5 It is a top view schematic diagram of the upper cover plate of the box body in the integrated optical fiber diameter measurement and concave-convex measurement device designed in the utility model;

[0022] Figure 6 It is a structural schematic diagram of a calibration component in an integrated optical fiber diameter measurement and convexity measurement device designed by the utility model.

[0023] Among them, 1. light source, 2. image capture device, 3. electric control sliding module, 3-1. movable stage, 3-2. motor, 3-3. coupling, 3-4. base, 3-5. photoelectric switch, 3-6. linear module, 4. fine-tuning base, 5. lens protection assembly, 5-1. sleeve device, 5-2. transparent glass, 6. box body, 6-1. upper cover plate, 6-2. outer frame, 6-3. bottom frame, 6-4. bottom plate, 6-5. fan, 6-6. filter group, 6-7. incision, 6-8. wire hole, 6-9. jack, 6-10. light source mounting bracket, 7. calibration assembly, 7-1. calibration table, 7-2. calibration rod holder, 7-3. limit ring, 7-4. calibration rod, 7-5. support column. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model is a fiber diameter measurement and concave-convex measurement integrated device designed for real-time detection of the optical fiber to be measured. In practical applications, such as Figure 1 and Figure 3 As shown, three shooting systems are included, wherein each shooting system includes a light source 1, an image shooting device 2, and a moving base. In the structure of each shooting system, the image shooting device 2 is arranged on the moving base, and the image shooting device 2 moves along the straight line with the back and forth movement of the moving base, and the optical axis of the shooting direction of the image shooting device 2 is parallel to the straight line where the moving direction is located.

[0026] like Figure 1 and Figure 3 As shown, the optical fiber to be tested is transported along a straight path, and the image capturing device 2 and the mobile base in each group of shooting systems are arranged around the straight conveying path of the optical fiber to be tested, and the optical axes of the shooting directions of each image capturing device 2 are perpendicular to the straight conveying path of the optical fiber to be tested, and the optical axes of the shooting directions of adjacent image capturing devices 2 form a preset angle of 60° with each other. In order to avoid mutual influence of the light sources 1 in each group of shooting systems, the optical axes of the shooting directions of each image capturing device 2 are not coplanar, and the light sources 1 in each group of shooting systems are respectively located on the optical axes of the shooting directions of the corresponding image capturing devices 2, and the straight conveying path of the optical fiber to be tested is located between the image capturing device 2 and the corresponding light source 1 in each group of shooting systems. Based on the operation of each light source 1, each image capturing device 2 focuses on the optical fiber to be tested based on the movement of the mobile base provided thereon to achieve backlight shooting.

[0027] In practical applications, the image capture device 2 uses a high-speed camera, which can be an array camera or a line scan camera. The lens of the image capture device 2 uses a lens with a magnification, which can be a FA lens, a telecentric lens, etc., to ensure imaging accuracy. A backlight lighting method is used, and the light source is a backlight light source, which can be a surface light, a point light, etc.

[0028] In the specific design implementation, for the above three shooting systems, Figure 1 and Figure 3 As shown, the structures of the first shooting system and the second shooting system are specifically designed to be identical to each other. The moving base in the first shooting system and the moving base in the second shooting system are both electrically controlled sliding modules 3. The image shooting device 2 is arranged on a movable carrier 3-1 in the electrically controlled sliding module 3. The image shooting device 2 moves along the straight line along with the back and forth movement of the movable carrier 3-1. The moving base in the third shooting system is a fine-tuning base 4. The image shooting device 2 is arranged on the fine-tuning base 4. The setting position of the fine-tuning base 4 is adjusted back and forth along a direction parallel to the optical axis of the shooting direction of the image shooting device 2 connected thereto.

[0029] And in practical applications, such as Figure 2 As shown, the specifically designed electric-controlled sliding module 3 includes a motor 3-2, a coupling 3-3, a linear module 3-6, a base 3-4, and a photoelectric switch 3-5, wherein the linear module 3-6 includes a base having a linear slide groove on the upper surface, and a lead screw, a protrusion in a linear direction is arranged on the lower surface of the movable platform 3-1, and the linear direction of the protrusion is parallel to the optical axis of the shooting direction of the image shooting device 2 arranged on the movable platform 3-1, and the shape and outer diameter of the cross-section of the protrusion are adapted to the shape and inner diameter of the cross-section of the slide groove on the upper surface of the base, the protrusion on the lower surface of the movable platform 3-1 is movably placed in the slide groove on the upper surface of the base, and the movable platform 3-1 moves as the protrusion moves back and forth in the linear direction in the slide groove on the upper surface of the base, and a linear through hole is arranged on the movable platform 3-1 which runs through its two opposite sides, and the straight line where the through hole is located is parallel to the straight line of the movable platform 3-1. The movable platform 3-1 is parallel to the linear moving direction, the inner diameter of the through hole is adapted to the outer diameter of the lead screw, and the inner wall of the through hole is provided with an internal thread matching the external thread of the lead screw, the lead screw rotates through the through hole on the movable platform 3-1, the base is provided on the upper surface of the base 3-4, the motor 3-2 is provided on the base 3-4 at one end corresponding to the linear moving direction of the movable platform 3-1, the driving shaft of the motor 3-2 is connected to one end of the coupling 3-3, the other end of the coupling 3-3 is connected to one end of the lead screw, based on the operation of the motor 3-2, the lead screw is driven to rotate axially through the coupling 3-3, and the movable platform 3-1 is driven by the lead screw to move linearly along the slide groove on the base, the photoelectric switch 3-5 is provided on the base 3-4, and the photoelectric switch 3-5 is located on the side of the slide groove on the base corresponding to the base in the linear module 3-6, and the photoelectric switch 3-5 is used to mark the starting point position of the movable platform 3-1.

[0030] During the actual production process, the optical fiber to be tested may shift in position. Due to the small depth of field of the imaging device, the image captured by the image capture device 2 is blurred, which affects the measurement of the diameter of the optical fiber to be tested and the detection of concave and convex defects. If the image is blurred, the automatic focusing function of the electronically controlled sliding module 3 is triggered, and the linear module drives the image capture device 2 to move forward and backward. When the image captured by the image capture device 2 is clear, the linear module stops moving, completing the automatic focusing of the equipment.

[0031] Regarding the core solution of the three shooting systems designed in the present patent for linearly conveying the optical fiber to be tested, in actual application, since the optical fiber to be tested is conveyed in real time, a lens protection component 5 is further designed to be added to the image shooting device 2 in each shooting system, such as Figure 4As shown, the specifically designed lens protection assembly 5 includes a straight sleeve device 5-1 with both ends open and interpenetrating, the sleeve device 5-1 is located on the straight conveying path of the optical fiber to be tested and is sleeved around the outer side of the optical fiber to be tested, the center line of the sleeve device 5-1 is parallel to the straight conveying path of the optical fiber to be tested, through holes are arranged around the side of the sleeve device 5-1 corresponding to the positions through which the optical axis of the shooting direction of each image shooting device 2 passes, and transparent glass 5-2 is embedded in each through hole, the light source 1 in each group of shooting systems works separately, and irradiates the optical fiber to be tested through the transparent glass 5-2 in the side through hole of the sleeve device 5-1 it faces, and the image shooting device 2 in each group of shooting systems performs backlight shooting of the optical fiber to be tested through the transparent glass 5-2 in the side through hole of the sleeve device 5-1 it faces.

[0032] Further, the above design scheme is added with the external box 6 structure design, such as Figure 3 and Figure 5 As shown, the box body 6 includes an upper cover plate 6-1, an outer frame 6-2, a bottom frame 6-3, and a bottom plate 6-4, wherein the outer frame 6-2 is arranged around the periphery of each group of shooting systems. Based on the lens protection component 5 and the overall structure of each group of shooting systems, the height of the upper edge of the outer frame 6-2 perpendicular to the surface of the outer frame 6-2 as a whole is greater than the maximum height of the overall structure along this direction. The shape and size of the bottom frame 6-3 are the same as the shape and size of one side of the outer frame 6-2. The bottom frame 6-3 is connected to the outer frame 6-2 on this side. The shape and size of the bottom plate 6-4 are adapted to the shape and size of the bottom frame 6-3. The edge of the bottom plate 6-4 is detachably connected to the bottom frame 6-3. The movable bases in each group of shooting systems are respectively arranged on the surface of the bottom plate 6-4 facing the outer frame 6-2 side, and each The light source 1 is respectively arranged on the surface of the base plate 6-4 facing the outer frame 6-2 through the light source mounting bracket 6-10, and a through hole is arranged on the base plate 6-4 corresponding to the position of the sleeve device 5-1 in the lens protection assembly 5, and the inner diameter of the through hole is adapted to the outer diameter of the sleeve device 5-1, and one end of the through hole on the sleeve device 5-1 facing the base plate 6-4 is connected to the through hole, and the shape and size of the upper cover plate 6-1 are adapted to the shape and size of the base plate 6-4, and the upper cover plate 6-1 is detachably placed on the edge of the outer frame 6-2 facing away from the base plate 6-4, and a through hole is arranged on the upper cover plate 6-1 corresponding to the position of the sleeve device 5-1 in the lens protection assembly 5, and the inner diameter of the through hole is adapted to the outer diameter of the sleeve device 5-1, and one end of the through hole on the sleeve device 5-1 facing the upper cover plate 6-1 is connected to the through hole.

[0033] And for the delivery of the optical fiber to be tested in the sleeve device 5-1 of the lens protection assembly 5, as shown in FIG. Figure 1 , Figure 3 , Figure 5As shown, a cutout 6-7 is provided from the side of the box body 6 toward the inner side, and the cutout 6-7 extends to the interior of the sleeve device 5-1 in the lens protection assembly 5, and the cutout 6-7 penetrates the upper cover plate 6-1, the bottom frame 6-3, and the bottom plate 6-4 of the box body 6; the gap between the two side surfaces of the cutout 6-7 is larger than the diameter of the optical fiber to be tested, that is, in actual application, the optical fiber to be tested transported in the sleeve device 5-1 can be directly adjusted through the cutout 6-7 when necessary, thereby improving the convenience of using the design device.

[0034] In addition, in order to further improve the application efficiency of the box 6 design, Figure 3 As shown, the designed box 6 also includes a fan 6-5, a filter group 6-6, and a wire hole 6-8, wherein two through holes are respectively arranged on the side of the outer frame 6-2, which penetrate the two sides thereof, and the through holes correspond to the fan 6-5 and the filter group 6-6 one by one, respectively. The shape and outer diameter of the periphery of the fan 6-5 are adapted to the shape and inner diameter of the through holes on the side of the corresponding outer frame 6-2. The fan 6-5 is embedded in the through holes on the side of the corresponding outer frame 6-2. The shape and outer diameter of the periphery of the filter group 6-6 are adapted to the shape and inner diameter of the through holes on the side of the corresponding outer frame 6-2. The filter group 6-6 is embedded in the through holes on the side of the corresponding outer frame 6-2. The wire hole 6-8 penetrates the side of the outer frame 6-2 of the box 6, and is used to realize the wired connection between the electrical equipment in the box 6 and the equipment outside the box 6.

[0035] In application, the filter group 6 - 6 is used to prevent corrosive substances from entering the box 6 , and the fan 6 - 5 is used to dissipate heat in the box 6 .

[0036] Regarding the above-mentioned integrated device for measuring the diameter and convexity of optical fiber, in actual application, before measuring the optical fiber to be measured, it is necessary to calibrate the designed device, that is, to focus the image capturing device 2 in the three-group shooting system. For this purpose, a calibration component 7 is designed, such as Figure 6As shown, it specifically includes a calibration platform 7-1, a calibration rod seat 7-2, a limiting ring 7-3, a calibration rod 7-4, and at least three supporting columns 7-5, wherein a limiting hole for the supporting column 7-5 is arranged on the surface of the calibration platform 7-1, the calibration rod seat 7-2 is cylindrical, and the outer diameter of the cylindrical shape of the calibration rod seat 7-2 is adapted to the inner diameter of the upper limit hole of the calibration platform 7-1, the limiting ring 7-3 is fixedly sleeved on the outer periphery of the calibration rod seat 7-2, and the outer diameter of the limiting ring 7-3 is larger than the inner diameter of the upper limit hole of the calibration platform 7-1, One end of the calibration rod seat 7-2 moves downward from the top of the calibration platform 7-1 and passes through the limiting hole on the surface of the calibration platform 7-1, and the downward movement of the calibration rod seat 7-2 is limited based on the bottom of the limiting ring 7-3. The end of the calibration rod seat 7-2 that passes through the limiting hole on the surface of the calibration platform 7-1 is connected to one end of the calibration rod 7-4, and the central axis of the calibration rod seat 7-2 is collinear with the straight line where the calibration rod 7-4 is located, and the collinearity is perpendicular to the surface of the calibration platform 7-1 facing away from the limiting ring 7-3. The outer diameter of the calibration rod 7-4 The inner diameter of the sleeve device 5-1 in the lens protection assembly 5 is smaller than that of the image capture device 2, and one end of each support column 7-5 is respectively connected to the surface of the calibration platform 7-1 facing away from the limit ring 7-3, and the connection position of each support column 7-5 is distributed around the through hole of the calibration platform 7-1, and each support column 7-5 is respectively perpendicular to the surface of the calibration platform 7-1 facing away from the limit ring 7-3; the surface of the bottom plate 6-4 in the box body 6 corresponds to the outer side of the end of the connected sleeve device 5-1 There are sockets 6-9 penetrating the surface of the bottom plate 6-4 in a surrounding area. The number of the sockets 6-9 on the bottom plate 6-4 is the same as the number of the support columns 7-5. The positions of the support columns 7-5 and the sockets 6-9 on the bottom plate 6-4 correspond one to one. During calibration, the lens protection assembly 5 is removed, and the calibration assembly 7 is inserted into the sockets 6-9 on the surface of the bottom plate 6-4 based on its support columns 7-5. The image capture device 2 in each group of shooting systems realizes focus calibration on the calibration rod 7-4.

[0037] In the specific calibration operation, the calibration component 7 is inserted into the sockets 6-9 on the surface of the base plate 6-4 based on its supporting columns 7-5, that is, the calibration rod 7-4 acts as the optical fiber to be tested located in the sleeve device 5-1, and the light source 1 in each shooting system is controlled to start working. The image shooting device 2 in each group of shooting systems performs focus calibration on the calibration rod 7-4, obtains a clear image of the calibration rod 7-4, and obtains the imaging accuracy of different image shooting devices 2.

[0038] When the three groups of shooting systems complete the calibration operation, that is, each image shooting device 2 completes the focus calibration of the calibration rod 7-4 in the sleeve device 5-1, the optical fiber to be tested can be controlled to be transported along the sleeve device 5-1, and the image shooting device 2 in each shooting system can be controlled to perform backlight shooting of the optical fiber to be tested, obtain each shot image, and then measure the diameter and convexity.

[0039] The above-designed integrated optical fiber diameter measurement and convexity measurement device is implemented as follows in actual application.

[0040] Preparation: Before you start installing the equipment, make sure the installation site is clean: remove any debris that may hinder installation, make sure the installation area is clean, and create a good working environment for the equipment. Check the equipment and platform parts: Carefully check all parts of the equipment and the mounting platform to make sure they are not damaged or missing.

[0041] Installation fixing platform: Make the equipment installation fixing bracket according to the equipment and on-site environment, install the installation bracket on-site, and adjust the levelness of the installation bracket.

[0042] Equipment installation: remove the upper cover 6-1, lens protection assembly 5 and calibration platform 7 of the equipment, install the equipment on the mounting bracket, adjust the center of the hole in the upper right corner of the bottom plate of the optical fiber to be tested on site, organize the cables inside the box 6, reliably connect the equipment cables to the corresponding components, and fix the equipment cables in an appropriate manner at the appropriate location on site.

[0043] Calibration equipment accuracy: The calibration component 7 is based on its support columns 7-5 being inserted into the sockets 6-9 on the surface of the base plate 6-4 respectively, and the three sets of shooting systems are adjusted so that each image shooting device 2 can clearly image the calibration stick and calibrate the camera accuracy.

[0044] Fiber optic inspection: Adjust the inspection parameters according to the site and start the fiber optic diameter and concave-convex defect inspection.

[0045] The above technical solution designs an integrated device for measuring fiber diameter and bumps, and designs three sets of shooting systems. With the shooting direction optical axis of each image shooting device 2 pointing vertically to the optical fiber to be tested, the optical fiber to be tested is backlit and focused from different directions through the focusing design under the mechanical structure, completing the integrated functional application of optical fiber diameter measurement and optical fiber bump detection. The equipment can complete 300,000 accurate measurements per second at a high-speed wire drawing state of 3km / min, with a diameter measurement accuracy of 1μm, and can effectively detect bump defects of 5-400um in size, which improves the efficiency and accuracy of optical fiber diameter measurement and bump detection as a whole.

[0046] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. An integrated device for measuring the diameter and convexity of an optical fiber, used for real-time detection of an optical fiber to be measured, characterized in that: The invention comprises three groups of shooting systems, wherein each group of shooting systems comprises a light source (1), an image shooting device (2), and a movable base. In the structure of each group of shooting systems, the image shooting device (2) is arranged on the movable base, the image shooting device (2) moves along the straight line along which the movable base moves back and forth, and the optical axis of the image shooting device (2) in the shooting direction is parallel to the straight line in which the image shooting device (2) moves; The optical fiber to be tested is transported along a straight path, and the image capture devices (2) and the movable base in each group of shooting systems are arranged around the straight conveying path of the optical fiber to be tested. The optical axes of the shooting directions of each image capture device (2) are perpendicular to the straight conveying path of the optical fiber to be tested, and the optical axes of the shooting directions of adjacent image capture devices (2) are at a preset angle to each other. The optical axes of the shooting directions of each image capture device (2) are not coplanar. The light sources (1) in each group of shooting systems are respectively located on the optical axes of the shooting directions of the corresponding image capture devices (2), and the straight conveying path of the optical fiber to be tested is located between the image capture devices (2) and the corresponding light sources (1) in each group of shooting systems. Based on the operation of each light source (1), each image capture device (2) focuses on the optical fiber to be tested based on the movement of the movable base provided thereon to achieve backlight shooting.

2. The integrated optical fiber diameter and concave-convex measurement device according to claim 1, characterized in that: In the three shooting systems, the structure of the first shooting system is identical to that of the second shooting system. The moving base in the first shooting system and the moving base in the second shooting system are both electrically controlled sliding modules (3). The image shooting device (2) is arranged on a movable platform (3-1) in the electrically controlled sliding module (3). The image shooting device (2) moves along the straight line along with the reciprocating movement of the movable platform (3-1). The moving base in the third shooting system is a fine-tuning base (4). The image shooting device (2) is arranged on the fine-tuning base (4). The setting position of the fine-tuning base (4) is adjusted back and forth along a direction parallel to the optical axis of the shooting direction of the image shooting device (2) connected thereto.

3. The integrated optical fiber diameter and concave-convex measurement device according to claim 2, characterized in that: The electric control sliding module (3) also includes a motor (3-2), a coupling (3-3), a linear module (3-6), and a base (3-4), wherein the linear module (3-6) includes a base having a linear slide groove on the upper surface, and a lead screw, a protrusion in a linear direction is provided on the lower surface of the movable platform (3-1), and the linear direction of the protrusion is parallel to the optical axis of the shooting direction of the image shooting device (2) provided on the movable platform (3-1), and the cross-sectional shape and outer diameter of the protrusion are adapted to the cross-sectional shape and inner diameter of the slide groove on the upper surface of the base, the protrusion on the lower surface of the movable platform (3-1) is movably placed in the slide groove on the upper surface of the base, and the movable platform (3-1) moves as the protrusion moves back and forth in the linear direction in the slide groove on the upper surface of the base, and a protrusion penetrating the movable platform (3-1) is provided on the movable platform (3-1). The movable platform (3-1) is provided with a linear through hole on two opposite sides, and the straight line where the through hole is located is parallel to the linear movement direction of the movable platform (3-1). The inner diameter of the through hole is adapted to the outer diameter of the lead screw, and the inner wall of the through hole is provided with an internal thread matching the external thread of the lead screw. The lead screw rotates through the through hole on the movable platform (3-1). The base is provided on the upper surface of the base (3-4). The motor (3-2) is provided at one end of the base (3-4) corresponding to the linear movement direction of the movable platform (3-1). The driving shaft of the motor (3-2) is connected to one end of the coupling (3-3), and the other end of the coupling (3-3) is connected to one end of the lead screw. Based on the operation of the motor (3-2), the lead screw is driven to rotate axially through the coupling (3-3), and the movable platform (3-1) is driven by the lead screw to move linearly along the slide groove on the base.

4. The integrated optical fiber diameter and concave-convex measurement device according to claim 3, characterized in that: The electrically controlled sliding module (3) further comprises a photoelectric switch (3-5), the photoelectric switch (3-5) being arranged on the base (3-4), and the photoelectric switch (3-5) being located on a side of the base in the linear module (3-6) corresponding to the upper slide groove thereof, and the photoelectric switch (3-5) being used to mark the starting point position of the movable carrier (3-1).

5. The integrated optical fiber diameter and concave-convex measurement device according to claim 1, characterized in that: The lens protection assembly (5) also includes a linear sleeve device (5-1) with two ends open and interpenetrating, the sleeve device (5-1) being located on the linear transmission path of the optical fiber to be tested and sleeved around the outer side of the optical fiber to be tested, the center line of the sleeve device (5-1) being parallel to the linear transmission path of the optical fiber to be tested, through holes being arranged around the side of the sleeve device (5-1) corresponding to the positions through which the optical axis of the shooting direction of each image shooting device (2) passes, each through hole being embedded with a transparent glass (5-2), the light source (1) in each group of shooting systems working separately and irradiating the optical fiber to be tested through the transparent glass (5-2) in the through hole on the side of the sleeve device (5-1) facing it, and the image shooting device (2) in each group of shooting systems shooting the optical fiber to be tested backlit through the transparent glass (5-2) in the through hole on the side of the sleeve device (5-1) facing it.

6. The integrated optical fiber diameter and concave-convex measurement device according to claim 5, characterized in that: The invention also comprises a box body (6), wherein the box body (6) comprises an upper cover plate (6-1), an outer frame (6-2), a bottom frame (6-3), and a bottom plate (6-4), wherein the outer frame (6-2) is arranged around the periphery of each group of shooting systems; based on the lens protection component (5) and the overall structure of each group of shooting systems, the height of the upper edge of the outer frame (6-2) perpendicular to the surface of the outer frame (6-2) as a whole is greater than the maximum height of the overall structure along this direction; the shape and size of the bottom frame (6-3) are the same as the shape and size of one side of the outer frame (6-2); the bottom frame (6-3) is connected to the side of the outer frame (6-2); the shape and size of the bottom plate (6-4) are adapted to the shape and size of the bottom frame (6-3); the edge of the bottom plate (6-4) is detachably connected to the bottom frame (6-3) around the bottom plate; and the movable bases in each group of shooting systems are respectively arranged on the surface of the bottom plate (6-4) facing the outer frame (6-2); Each light source (1) is respectively arranged on the surface of the bottom plate (6-4) on the side facing the outer frame (6-2) through a light source mounting bracket (6-10); a through hole is arranged on the bottom plate (6-4) at a position corresponding to the sleeve device (5-1) in the lens protection assembly (5); the inner diameter of the through hole is adapted to the outer diameter of the sleeve device (5-1); one end of the through hole on the sleeve device (5-1) facing the bottom plate (6-4) is butted against the through hole; the shape of the upper cover plate (6-1) The size is compatible with the shape and size of the bottom plate (6-4); the upper cover plate (6-1) is detachably placed on the edge of the outer frame (6-2) on the side facing away from the bottom plate (6-4); a through hole is provided on the upper cover plate (6-1) at a position corresponding to the sleeve device (5-1) in the lens protection assembly (5); the inner diameter of the through hole is compatible with the outer diameter of the sleeve device (5-1); and one end of the through hole on the sleeve device (5-1) facing the upper cover plate (6-1) is butted against the through hole.

7. The integrated optical fiber diameter and concave-convex measurement device according to claim 6, characterized in that: A cutout (6-7) is provided from the side of the box body (6) inwardly, and the cutout (6-7) extends to the interior of a sleeve device (5-1) in a lens protection assembly (5), and the cutout (6-7) penetrates an upper cover plate (6-1), a bottom frame (6-3), and a bottom plate (6-4) of the box body (6); a gap between two side surfaces of the cutout (6-7) is greater than a diameter of the optical fiber to be tested.

8. The integrated optical fiber diameter and concave-convex measurement device according to claim 6, characterized in that: The box body (6) further comprises a fan (6-5) and a filter group (6-6), wherein two through holes penetrating the two sides of the outer frame (6-2) are respectively arranged on the side surfaces thereof, and the through holes correspond to the fan (6-5) and the filter group (6-6) one by one, respectively; the shape and outer diameter of the outer periphery of the fan (6-5) are adapted to the shape and inner diameter of the through hole on the side surface of the corresponding outer frame (6-2); the fan (6-5) is embedded in the through hole on the side surface of the corresponding outer frame (6-2); the shape and outer diameter of the outer periphery of the filter group (6-6) are adapted to the shape and inner diameter of the through hole on the side surface of the corresponding outer frame (6-2); and the filter group (6-6) is embedded in the through hole on the side surface of the corresponding outer frame (6-2).

9. The integrated optical fiber diameter and concave-convex measurement device according to claim 6, characterized in that: The box (6) further comprises a wire hole (6-8) penetrating through a preset position on the side of the outer frame (6-2) thereof, for realizing a wired connection between each electrical device in the box (6) and a device outside the box (6).

10. The integrated optical fiber diameter and concave-convex measurement device according to claim 6, characterized in that: The calibration device also includes a calibration component (7), which includes a calibration platform (7-1), a calibration rod seat (7-2), a limiting ring (7-3), a calibration rod (7-4), and at least three support columns (7-5), wherein a limiting hole for the support column (7-5) is arranged on the surface of the calibration platform (7-1), the calibration rod seat (7-2) is cylindrical, the outer diameter of the cylindrical shape of the calibration rod seat (7-2) is adapted to the inner diameter of the upper limit hole of the calibration platform (7-1), the limiting ring (7-3) is fixedly sleeved on the outer circumference of the calibration rod seat (7-2), and the outer diameter of the limiting ring (7-3) is larger than that of the calibration platform (7-1). 1) The inner diameter of the upper limit hole, one end of the calibration rod seat (7-2) moves downward from the top of the calibration platform (7-1) to pass through the limit hole on the surface of the calibration platform (7-1), and the limit of the downward movement of the calibration rod seat (7-2) is realized based on the bottom of the limit ring (7-3), the end of the calibration rod seat (7-2) passing through the limit hole on the surface of the calibration platform (7-1) is connected to one end of the calibration rod (7-4), and the central axis of the calibration rod seat (7-2) is collinear with the straight line where the calibration rod (7-4) is located, and the collinearity is perpendicular to the surface of the calibration platform (7-1) facing away from the limit ring (7-3), and the calibration rod (7- The outer diameter of the support column (7-5) is smaller than the inner diameter of the sleeve device (5-1) in the lens protection assembly (5) and smaller than the field of view of the image capture device (2); one end of each support column (7-5) is respectively connected to the surface of the calibration platform (7-1) facing away from the limit ring (7-3); and the connection position of each support column (7-5) is distributed around the through hole on the calibration platform (7-1); and each support column (7-5) is respectively perpendicular to the surface of the calibration platform (7-1) facing away from the limit ring (7-3); the surface of the bottom plate (6-4) in the box body (6) corresponds to the outer diameter of the end of the connected sleeve device (5-1) In the side circumferential area, respective plug holes (6-9) penetrating the surface of the bottom plate (6-4) are respectively arranged, the number of the plug holes (6-9) on the bottom plate (6-4) is the same as the number of the support columns (7-5), and the positions of the respective support columns (7-5) and the respective plug holes (6-9) on the bottom plate (6-4) correspond to each other one by one. During calibration, the lens protection component (5) is removed, and the calibration component (7) is respectively inserted into the respective plug holes (6-9) on the surface of the bottom plate (6-4) based on the respective support columns (7-5), and the image capture device (2) in each group of the capture system performs focus calibration on the calibration rod (7-4).

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