An optical fiber measurement system and method

Abstract

The application relates to the technical field of optical fiber measurement, and provides an optical fiber measurement system and method, which are applied to detection of the cutting length of an optical fiber. In the system, a control terminal calculates a rotation angle required to be rotated according to first image information, and adjusts a rotating motor to rotate the rotation angle to adjust an installation assembly to a corresponding position. The control terminal analyzes the first image information to control a moving mechanism to move a second shooting assembly to a measurement position, controls the second shooting assembly to move downward and take pictures at equal time intervals to generate second image information of different heights, the second shooting assembly transmits the second image information to the control terminal, and the control terminal analyzes the second image information of the different heights to obtain the actual length of a measured object. The application realizes correction of the measured object, improves the accuracy of a measurement result, makes target points at two ends of the measured object keep in the same horizontal plane, and avoids errors of the measurement result caused by the inclination of the measured object.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical fiber measurement technology, and particularly relates to an optical fiber measurement system and method. BACKGROUND

[0002] Machine vision is a branch of artificial intelligence that is rapidly developing. Simply put, machine vision is to replace the human eye with a machine to measure and judge. The machine vision system converts the target to be taken into an image signal through CMOS or CCD, transmits it to a dedicated image processing system, obtains the shape information of the target to be taken, and converts it into a digital signal according to the pixel distribution and brightness, color and other information; the image system performs various operations on these signals to extract the characteristics of the target, and then controls the action of the on-site equipment according to the judgment result.

[0003] With the development of machine vision technology, visual measurement has been applied in various aspects of industrial manufacturing. However, the traditional visual 2D measurement equipment on the market has not corrected the tilt state of the measured object in high-precision measurement, which has a certain impact on the measurement result. Especially in the size measurement of optical fibers, due to the height difference between the two target points to be measured, the camera may not be able to focus on the two points at the same time, resulting in measurement error. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide an optical fiber measurement system and method that can correct and improve measurement accuracy.

[0005] To solve the above problems, the present application provides the following technical solutions:

[0006] An optical fiber measurement system applied to detection of optical fiber cutting length, comprising:

[0007] a main body;

[0008] a light source installed on the main body for irradiating the measured object;

[0009] a measurement mechanism installed on the main body, the measurement mechanism comprising a moving mechanism, a first shooting assembly installed on one side of the light source, and a second shooting assembly installed on the other side of the light source; the first shooting assembly is fixed to the main body and opposite to the axial direction of the measured object, the second shooting assembly is connected with the moving mechanism, and the second shooting assembly is movable through the moving mechanism to take a photo of the measured object;

[0010] An adjustment mechanism is installed on the main body and is located on one side of the light source. The adjustment mechanism includes a mounting assembly for mounting the object to be measured and a rotary motor connected to the mounting assembly and capable of rotating the mounting assembly. When the rotary motor rotates the mounting assembly, the object to be measured rotates along with the mounting assembly.

[0011] The control terminal is connected to both the first and second imaging components. The first imaging component transmits a first image of the object to be measured to the control terminal. The control terminal calculates the required rotation angle based on the first image information and adjusts the rotating motor to rotate the rotation angle to adjust the mounting component to the corresponding position. The control terminal analyzes the first image information to control the moving mechanism to move the second imaging component to the measurement position. The control terminal controls the second imaging component to move downwards and take pictures at equal time intervals to generate second image information at different heights. The second imaging component transmits the second image information to the control terminal. The control terminal analyzes the second image information at multiple different heights to determine the actual length of the object to be measured.

[0012] The moving mechanism includes a first track, a second track, and a third track;

[0013] The first track is mounted on the main body along the second direction, the second track is mounted on the first track along the first direction and can move along the second direction on the first track, the third track is mounted on the second track along the first direction and can move along the second track along the first direction, and the second shooting component is mounted on the third track along the third direction and can move along the third track along the third direction.

[0014] The control terminal adjusts the first track, the second track, and the third track to move them in order to transmit the second imaging component to the measurement position;

[0015] The first direction, the second direction, and the third direction are all perpendicular to each other;

[0016] The first track includes a first fixed frame fixed to the main body, a first movable plate installed on the upper end of the first fixed frame, a first motor installed on one side of the first fixed frame, and a first pivot shaft connecting the first motor and the first movable plate;

[0017] The second track includes a first sliding bracket movably connected to the first fixed frame, a second fixed frame mounted on the first sliding bracket, a second movable plate mounted on the second fixed frame, a second motor mounted on one side of the second fixed frame, and a second pivot shaft connecting the second motor and the second movable plate;

[0018] The third track includes a second sliding bracket movably connected to the second fixed frame, a third fixed frame mounted on the second sliding bracket, a third movable plate mounted on one side of the third fixed frame, a third motor mounted on one side of the third fixed frame, and a third pivot shaft connecting the third motor and the third movable plate.

[0019] The second shooting component is mounted on the third movable plate;

[0020] The first motor can drive the first moving plate to move along the second direction via the first pivot shaft; the second motor can drive the second moving plate to move along the first direction via the second pivot shaft; the third motor can drive the third moving plate to move along the third direction via the third pivot shaft.

[0021] In one embodiment, the first imaging component is mounted on one side of the light source along a first direction, and the adjustment mechanism is mounted on the other side of the light source along the first direction and is disposed opposite to the first imaging component.

[0022] In one embodiment, the mounting assembly includes a support member connected to the rotary motor and a fixing member detachably connected to the support member, the projection of the fixing member along a third direction being completely mapped within the light source.

[0023] In one embodiment, the rotary motor is a DD direct drive motor.

[0024] In one embodiment, the first shooting assembly includes a first housing, a first camera mounted inside the first housing, and a first lens connected to the first camera and disposed toward the mounting assembly;

[0025] The second shooting assembly includes a second housing, a second camera mounted inside the second housing, and a second lens connected to the second camera and positioned facing the light source;

[0026] The second housing is movably connected to the third movable plate.

[0027] In one embodiment, both the first lens and the second lens are telecentric lenses.

[0028] In one embodiment, the first housing has a first opening on the side opposite to the light source along a first direction; the second housing has a second opening on the side opposite to the light source along a third direction.

[0029] The first camera is electrically connected to the control terminal through the first opening, and the second camera is electrically connected to the control terminal through the second opening.

[0030] A fiber optic measurement method, applied to the aforementioned fiber optic measurement system, includes the following steps:

[0031] S1: Obtain the first image information of the object being measured by the first imaging component;

[0032] S2: Calculate the rotation angle of the current test position of the object relative to the target position based on the first image information, and control the rotating motor to rotate the object by the rotation angle;

[0033] S3: Calculate the direction and distance of movement of the current position of the second shooting component relative to the measurement position based on the first image information;

[0034] S4: Control the moving mechanism to move the second shooting component to the measurement position, and control the moving mechanism to move the second shooting component downward from a preset height range directly above the object being measured;

[0035] S5: Control the second imaging component to take pictures at equal time intervals during the downward movement to obtain second image information at multiple different measurement heights;

[0036] S6: Calculate the corresponding image sharpness coefficient based on each of the second image information;

[0037] S7: Associate each measurement height with the corresponding image clarity coefficient to form a mapping relationship, and determine the measurement height corresponding to the maximum image clarity coefficient as the target measurement height based on the mapping relationship;

[0038] S8: Control the second imaging component to move to the target measurement height to capture the image and obtain third image information including both ends of the object being measured;

[0039] S9: Identify both ends of the object under test based on the third image information, and calculate the pixel value of the distance between the two ends of the object under test;

[0040] S10: Determine the actual length of the object being measured based on the pixel values.

[0041] The beneficial effects of this invention are as follows: It transmits the image information of the object under test to a control terminal via a first imaging component. The control terminal adjusts the rotation angle of the rotating motor based on the image information from the first imaging component to adjust the mounting component to the corresponding position. The control terminal adjusts the height of the second imaging component within a preset height range via a moving mechanism, allowing the second imaging component to take photos of the object under test at equal intervals. The second imaging component transmits the images to the control terminal for analysis to obtain the image clarity coefficient. Based on the image clarity coefficient, the measurement height of the second imaging component is determined, thereby measuring the object under test at the optimal measurement height. By measuring the pixel values ​​of the distance between the two ends of the object under test, the actual length of the object under test is measured. In high-precision measurement, this invention corrects the tilt of the object under test through an adjustment mechanism based on the image information from the first imaging component, improving the accuracy of the measurement results. In fiber optic dimension measurement, it ensures that the target points at both ends of the object under test remain on the same horizontal plane, avoiding errors in the measurement results due to the tilt of the object under test. Attached Figure Description

[0042] Figure 1 This is a perspective view of one embodiment of the fiber optic measurement system of the present invention;

[0043] Figure 2 This is a schematic diagram of one embodiment of the fiber optic measurement system of the present invention;

[0044] Figure 3 This is a front view of one embodiment of the fiber optic measurement system of the present invention;

[0045] Figure 4 This is an exploded view of one embodiment of the fiber optic measurement system of the present invention;

[0046] Figure 5 This is a schematic diagram of the structure of one embodiment of the moving mechanism in this invention;

[0047] Figure 6 This is a schematic diagram of one embodiment of the installation component in this invention;

[0048] Figure 7 This is a schematic diagram of the structure of one embodiment of the object under test in this invention;

[0049] Figure 8 This is a structural block diagram of one embodiment of an optical fiber measurement method according to the present invention.

[0050] Figure label:

[0051] 100. Fiber optic measurement system; 1. Main body; 2. Light source; 31. Moving mechanism; 32. First imaging component; 33. Second imaging component; 4. Adjustment mechanism; 10. Object under test; 41. Mounting component; 411. Support component; 412. Fixing component; 42. Rotary motor; 311. First track; 312. Second track; 313. Third track; 351. First fixed frame; 352. First moving plate; 353. First motor; 354. First pivot shaft; 361. First sliding support Frame; 362, second fixed frame; 363, second movable plate; 364, second motor; 365, second pivot shaft; 371, second sliding bracket; 372, third fixed frame; 373, third movable plate; 374, third motor; 375, third pivot shaft; 321, first housing; 322, first camera; 323, first lens; 331, second housing; 332, second camera; 333, second lens; 324, first opening; 334, second opening; 10a, round hole. Detailed Implementation

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0054] For ease of description of the first, second, and third directions in the embodiments of this application, the first direction is the left-right direction in the figures, the second direction is the front-back direction in the figures, and the third direction is the up-down direction in the figures. The x-axis arrow direction is referred to as the "right" direction, the y-axis arrow direction as the "back" direction, and the z-axis arrow direction as the "up" direction, but these are not the sole limitations in the actual application of this application.

[0055] Example 1: Please refer to Figures 1-7As shown, this embodiment provides an optical fiber measurement system 100 for detecting the length of cut optical fibers. It includes a main body 1, a light source 2, a measuring mechanism, an adjustment mechanism 4, and a control terminal. The light source 2, measuring mechanism, and adjustment mechanism 4 are all mounted on the end face of the main body 1. The light source 2 is used to illuminate the object 10 being measured. In this embodiment, the object 10 being measured is mainly a cut optical fiber. The optical fiber measurement system 100 measures both ends of the optical fiber to determine the distance between the two ends, further determining whether the length of the cut optical fiber meets the standard. Furthermore, the measuring mechanism includes a moving mechanism 31, a first imaging component 32 mounted on one side of the light source 2, and a component mounted on the light source. 2. The second imaging component 33 on the other side; wherein, the moving mechanism 31 is used to drive the second imaging component 33 to move, so as to capture the object 10 and perform measurement, the first imaging component 32 is fixed to the main body 1 and is opposite to the axis of the object 10, and can measure the levelness of the object 10, the second imaging component 33 is connected to the moving mechanism 31, and the second imaging component 33 can be moved via the moving mechanism 31 to focus on and take pictures of both ends of the object 10; furthermore, the adjustment mechanism 4 is provided on one side of the light source 2, the adjustment mechanism 4 includes a mounting component 41 for mounting the object 10 and a rotating motor 42 connected to the mounting component 41 and capable of rotating the mounting component 41, and when the rotating motor When the mounting assembly 41 is rotated, the object 10 being measured rotates along with the mounting assembly 41. Further, the first imaging assembly 32 is mounted along the first direction on one side of the light source 2, and the adjustment mechanism 4 is mounted along the first direction on the other side of the light source 2 and is positioned opposite to the first imaging assembly 32. This structure facilitates the first imaging assembly 32 in capturing images of the mounting assembly 41, ensuring that the axis of the object 10 being measured faces directly opposite the first imaging assembly 32. It is understood that both the first imaging assembly 32 and the second imaging assembly 33 are communicatively connected to the control terminal. The first imaging assembly 32 transmits the image information of the object 10 being measured to the control terminal. In this embodiment, the image information includes parameters such as the position of the circular hole 10a, tilt... The parameters include tilt angle and motion marker parameters. Among them, the position parameter of the circular hole 10a is mainly detected for optical fiber. The control terminal determines the tilt angle by detecting the position of the circular hole 10a on the optical fiber ferrule. Based on the tilt angle, it analyzes the rotation angle that the rotating motor 42 needs to rotate. It also analyzes the position coordinates of the object under test 10 through the motion marker parameters, thereby adjusting the moving mechanism 31 to move the second imaging component 33 above the object under test 10 to take a picture. That is, the control terminal adjusts the rotation angle of the rotating motor 42 according to the position parameter of the circular hole 10a of the object under test 10 on the mounting component 41 of the first imaging component 32 to adjust the mounting component 41 to be level with the first imaging component 32.Furthermore, the control terminal analyzes the first image information to control the moving mechanism 31 to move the second imaging component 33 to the measurement position. It then controls the second imaging component 33 to move downwards and take photos at equal time intervals to generate second image information at different heights. All second image information taken at equal intervals during the downward movement of the second imaging component 33 is transmitted to the control terminal. The control terminal analyzes the second image information from multiple different heights to determine the image clarity coefficient V, and determines the measurement height H of the second imaging component 33 based on the image clarity coefficient V. Thus, the actual length D of the object being measured is measured within this measurement height H.

[0056] Please refer to Figures 1-3 As shown in Figures 5-7, preferably, the moving mechanism 31 includes a first track 311, a second track 312, and a third track 313; wherein, the first track 311 is fixedly installed on the main body 1 along a second direction, the second track 312 is installed on the first track 311 along a first direction and can move back and forth along the first track 311 along the second direction, the third track 313 is installed on the second track 312 along the first direction and can move left and right along the second track 312 along the first direction, and the second shooting component 33 is installed on the third track 313 along a third direction and can move up and down along the third track 313; in this embodiment, the movement of the second shooting component 33... The height H is less than the length of the third track 313, so that the movement distance of the second imaging component 33 on the third track 313 is always kept within a controllable range. It can be understood that after the first imaging component 32 transmits the first image information to the control terminal, the control terminal analyzes and obtains the position information of the object 10 under test, and then controls the second track 312 and the third track 313 to move to transmit the second imaging component 33 above the object 10 under test. Then, by adjusting the second imaging component 33, the height H of the second imaging component 33 is raised and lowered within the preset height range of the third track 313 to shoot, thereby shooting the object 10 under test at equal intervals.

[0057] Please refer to Figures 1-5As shown, preferably, the first track 311 includes a first fixed frame 351 fixed to the main body, a first movable plate 352 mounted on the upper end of the first fixed frame 351, a first motor 353 mounted on one side of the first fixed frame 351, and a first pivot shaft 354 connecting the first motor 353 and the first movable plate 352; the second track 312 includes a first sliding bracket 361 movably connected to the first fixed frame 351, a second fixed frame 362 mounted on the first sliding bracket 361, a second movable plate 363 mounted on the second fixed frame 362, a second motor 364 mounted on one side of the second fixed frame 362, and a second pivot shaft 365 connecting the second motor 364 and the second movable plate 363; the third track 313 includes a second sliding bracket 371 movably connected to the second fixed frame 362, and a first movable plate 353 mounted on the second fixed frame 351. The second sliding bracket 371 has a third fixed frame 372, a third moving plate 373 mounted on one side of the third fixed frame 372, a third motor 374 mounted on one side of the third fixed frame 372, and a third pivot shaft 375 connecting the third motor 374 and the third moving plate 373. In this embodiment, the second shooting component 33 is mounted on the third moving plate 373. It can be understood that in this embodiment, the first motor 353 can drive the first moving plate 352 to move along the second direction through the first pivot shaft 354; the second motor 364 can drive the second moving plate 363 to move along the first direction through the second pivot shaft 365; and the third motor 374 can drive the third moving plate 373 to move along the third direction through the third pivot shaft 375, thereby enabling the second shooting component 33 to be moved to the measurement position and to perform interval shooting.

[0058] like Figure 3 As shown, preferably, the mounting assembly 41 includes a support member 411 connected to the rotating motor 42 and a fixing member 412 detachably connected to the support member 411. The projection of the fixing member 412 along a third direction is completely mapped into the light source 2, that is, the length of the light source 2 along the first direction and the length along the second direction are both greater than the length of the fixing member 412 along the first direction and the width along the second direction. This structure allows the light source 2 to illuminate each part of the fixing member 412, thereby illuminating each part of the object 10 installed on the fixing member 412, to improve the illumination effect and further improve the imaging effect of the second imaging assembly 33. In addition, the rotating motor 42 adopts a DD direct drive motor, which can control the horizontal accuracy of the object measurement and ensure the accuracy of the measurement values. Since this type of motor is generally equipped with a high-resolution encoder, the product can achieve a higher level of accuracy than ordinary servo motors. Furthermore, the direct connection method reduces the positioning error caused by the mechanical structure, thus ensuring the process accuracy. Furthermore, for some camshaft control methods, dimensional errors caused by mechanical friction are reduced, thereby improving the adjustment accuracy of the rotating motor 42 during the adjustment of the mounting assembly 41.

[0059] likeFigure 4 As shown, specifically, the first shooting component 32 includes a first housing 321, a first camera 322 installed inside the housing, and a first lens 323 connected to the first camera 322 and positioned facing the mounting component 41; the second shooting component 33 includes a second housing 331, a second camera 332 installed inside the second housing 331, and a second lens 333 connected to the second camera 332 and positioned facing the light source 2; this structure allows the first camera 322 to be detachably connected to the first housing 321, and the second camera 332 to be detachably connected to the second housing 331, facilitating the assembly and disassembly of the first shooting component 32 and the second shooting component 33. Furthermore, the second housing 331 is movably connected to the third moving plate 373, allowing the second housing 331 to move up and down on the third moving plate 373; in addition, in this embodiment, both the first lens 323 and the second lens 333 are telecentric lenses, which can control image distortion and ensure image quality stability.

[0060] like Figure 4 As shown, specifically, in this embodiment, the first housing 321 has a first opening 324 on the side away from the light source 2 along the first direction; the second housing 331 has a second opening 334 on the side away from the light source 2 along the third direction. This structure enables the first camera 322 to be electrically connected to the control terminal through the first opening 324, and the second camera 332 to be electrically connected to the control terminal through the second opening 334, thereby realizing the transmission of image information.

[0061] Example 2: This invention provides an optical fiber measurement method, which is executed by a control terminal. The control terminal can be a computing device including one or more processors. The processor may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of this invention; no limitation is made here. The one or more processors included in the control terminal can be processors of the same type, such as one or more CPUs; or they can be processors of different types, such as one or more CPUs and one or more ASICs; no limitation is made here.

[0062] Please refer to Figure 8 As shown, this embodiment provides a method for measuring optical fibers using the optical fiber measurement system in Embodiment 1, which includes the following steps:

[0063] S1: Obtain the first image information of the object being measured by the first imaging component;

[0064] S2: Calculate the rotation angle of the current test position of the object relative to the target position based on the first image information, and control the rotating motor to rotate the object by the rotation angle;

[0065] S3: Calculate the direction and distance of movement of the current position of the second shooting component relative to the measurement position based on the first image information;

[0066] S4: Control the moving mechanism to move the second shooting component to the measurement position, and control the moving mechanism to move the second shooting component downward from a preset height range directly above the object being measured;

[0067] S5: Control the second imaging component to take pictures at equal time intervals during the downward movement to obtain second image information at multiple different measurement heights;

[0068] S6: Calculate the corresponding image sharpness coefficient based on each of the second image information;

[0069] S7: Associate each measurement height with the corresponding image clarity coefficient to form a mapping relationship, and determine the measurement height corresponding to the maximum image clarity coefficient as the target measurement height based on the mapping relationship;

[0070] S8: Control the second imaging component to move to the target measurement height to capture the image and obtain third image information including both ends of the object being measured;

[0071] S9: Identify both ends of the object under test based on the third image information, and calculate the pixel value of the distance between the two ends of the object under test;

[0072] S10: Determine the actual length of the object being measured based on the pixel values.

[0073] In step S1, the first imaging component observes the position of the dots on the object under test. In this embodiment, the dots are located at the end of the optical fiber under test, which is the part away from the end of the optical fiber ferrule. The dots at the ends of the optical fiber are located at both ends of the optical fiber along the second direction. The first imaging component takes pictures of the dots at both ends and transmits the observed dot position information to the control terminal.

[0074] In step S2, the first imaging component transmits the acquired first image information, namely the position information of the dots on the side of the object being tested facing the first imaging component along its axis, to the control terminal. The control terminal analyzes and calculates the position information of the dots using algorithm analysis software, measures the tilt angle of the two dots at the end of the optical fiber in the horizontal direction, and determines the tilt angle of the optical fiber being tested. The control terminal also calculates the rotation angle that the rotating motor needs to rotate using its algorithm analysis software and controls the rotating motor to rotate by that angle so that the object being tested remains horizontal along the first direction, thereby making the object being tested face the second imaging component.

[0075] In steps S3-S6, the control terminal locates the position of the object under test based on the first image information, thereby controlling the second imaging component to move to directly above the object under test via a moving mechanism. The control terminal then raises and lowers the component within a preset height range H1~H2 and takes photos of the object at equal intervals, obtaining multiple second image information at different measurement heights. The corresponding image clarity coefficient V is calculated based on each second image information. In this embodiment, the minimum value H2 of the preset height range of the second imaging component along a third direction is greater than the height of the light source along a third direction, while the height range H1~H2 of the second imaging component along a third direction is between 2 and 4 times the height of the light source along a third direction.

[0076] In step S7, the mapping relationship formed by associating each measured height with the image clarity coefficient V is recorded, and the measured height H corresponding to the peak value of V is found.

[0077] In steps S8-S10, the second imaging component focuses on both ends of the object under test, calculates the pixel values ​​at both ends of the object under test, and determines the actual length of the object under test based on the pixel values. In practical applications, this fiber optic measurement method is mainly used to measure some cut optical fibers. For some optical fibers with cut lengths that are too long or too short, this measurement method is used to screen optical fibers whose actual measured lengths are greater than or less than the standard length, so as to improve the pass rate of optical fibers and ensure the stability of optical fiber use.

[0078] In summary, this invention provides an optical fiber measurement system and method. A first imaging component transmits image information of the object under test to a control terminal. The control terminal adjusts the rotation angle of a rotating motor based on the image information from the first imaging component to position the mounting component accordingly. The control terminal uses a moving mechanism to adjust the height H of a second imaging component within the range of H1 to H2, allowing the second imaging component to take photos of the object under test at equal intervals. The second imaging component transmits the images to the control terminal for analysis to obtain an image clarity coefficient V. Based on the image clarity coefficient V, the measurement height H of the second imaging component is determined, allowing measurement of the object under test at the optimal measurement height H. The actual length of the object under test is measured by measuring the pixel value of the distance D between the two ends of the object. In high-precision measurement, this invention corrects for the tilt of the object under test by adjusting the mechanism based on the image information from the first imaging component, improving the accuracy of the measurement results. In optical fiber dimension measurement, it ensures that the target points at both ends of the object under test are on the same horizontal plane, avoiding errors in the measurement results due to the tilt of the object.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An optical fiber measurement system applied to detection of a cut length of an optical fiber, characterized by, The application relates to a length measuring device, which comprises a main body, a light source installed on the main body for irradiating a measured object, a measuring mechanism installed on the main body, the measuring mechanism comprising a moving mechanism, a first shooting assembly installed on one side of the light source and a second shooting assembly installed on the other side of the light source, the first shooting assembly being fixed on the main body and being opposite to the axial direction of the measured object, the second shooting assembly being connected with the moving mechanism and being movable through the moving mechanism to shoot the measured object, an adjusting mechanism installed on the main body, the adjusting mechanism being arranged on one side of the light source, the adjusting mechanism comprising an installation assembly for installing the measured object and a rotating motor connected with the installation assembly and capable of rotating the installation assembly, and when the rotating motor rotates the installation assembly, the measured object rotates with the installation assembly, and a control terminal, the first shooting assembly and the second shooting assembly being connected with the control terminal, the first shooting assembly transmitting first image information of the measured object to the control terminal, the control terminal calculating a rotating angle required for rotation according to the first image information and adjusting the rotating motor to rotate the rotating angle so as to adjust the installation assembly to a corresponding position, the control terminal analyzing the first image information to control the moving mechanism to move the second shooting assembly to a measuring position, controlling the second shooting assembly to move downward and shoot at equal time intervals to generate second image information of different heights, the second shooting assembly transmitting the second image information to the control terminal, and the control terminal analyzing the second image information of different heights to obtain an actual length of the measured object. The moving mechanism comprises a first track, a second track and a third track. The first track is installed on the main body along a second direction, the second track is installed on the first track along a first direction and is movable on the first track along the second direction, the third track is installed on the second track along the first direction and is movable on the second track along the first direction, and the second shooting assembly is installed on the third track along a third direction and is movable on the third track along the third direction. The control terminal adjusts the first track, the second track and the third track to move to transmit the second shooting assembly to the measuring position. The first direction, the second direction and the third direction are perpendicular to each other. The first track comprises a first fixed frame fixed on the main body, a first moving plate installed on the upper end of the first fixed frame, a first motor installed on one side of the first fixed frame and a first pivot shaft connected with the first motor and the first moving plate. The second track comprises a first sliding support movably connected with the first fixed frame, a second fixed frame installed on the first sliding support, a second moving plate installed on the second fixed frame, a second motor installed on one side of the second fixed frame and a second pivot shaft connected with the second motor and the second moving plate. The third track comprises a third sliding support movably connected with the second fixed frame, a third fixed frame installed on the third sliding support, a third moving plate installed on the third fixed frame, a third motor installed on one side of the third fixed frame and a third pivot shaft connected with the third motor and the third moving plate. ​ ​ ​ ​ ​ The third track comprises a second sliding support movably connected to the second fixed frame, a third fixed frame mounted on the second sliding support, a third moving plate mounted on one side of the third fixed frame, a third motor mounted on one side of the third fixed frame, and a third pivot shaft connecting the third motor and the third moving plate. The second photographing assembly is mounted on the third moving plate. The first motor drives the first moving plate to move along a second direction through the first pivot shaft, the second motor drives the second moving plate to move along a first direction through the second pivot shaft, and the third motor drives the third moving plate to move along a third direction through the third pivot shaft.

2. A fiber optic measurement system according to claim 1, wherein: The first photographing assembly is mounted on one side of the light source along a first direction, and the adjusting mechanism is mounted on the other side of the light source along the first direction and is arranged opposite to the first photographing assembly.

3. A fiber optic measurement system according to claim 1, wherein: The mounting assembly comprises a support connected to the rotating motor and a fixing member detachably connected to the support, and a projection of the fixing member along a third direction is completely mapped in the light source.

4. A fiber optic measurement system according to claim 1, wherein: The rotating motor is a DD direct drive motor.

5. The optical fiber measurement system of claim 1, wherein: The first photographing assembly comprises a first casing, a first camera mounted in the first casing, and a first lens connected to the first camera and arranged towards the mounting assembly. The second photographing assembly comprises a second casing, a second camera mounted in the second casing, and a second lens connected to the second camera and arranged towards the light source. The second casing is movably connected to the third moving plate.

6. A fiber optic measurement system according to claim 5, wherein: The first lens and the second lens are both telecentric lenses.

7. A fiber optic measurement system according to claim 5, wherein: The first casing is provided with a first opening on one side thereof away from the light source along a first direction, and the second casing is provided with a second opening on one side thereof away from the light source along a third direction. The first camera is electrically connected to the control terminal through the first opening, and the second camera is electrically connected to the control terminal through the second opening.

8. An optical fiber measurement method characterized by, The application is applied to the optical fiber measurement system of claim 1 and comprises the following steps: S1: acquiring first image information of the first photographing assembly for a measured object; S2: calculating a rotation angle of a current to-be-measured position of the measured object relative to a target position according to the first image information, and controlling the rotating motor to rotate the measured object by the rotation angle; S3: calculating a moving direction and a moving distance of a current position of the second photographing assembly relative to a measurement position according to the first image information; S4: controlling the moving mechanism to move the second photographing assembly to the measurement position, and controlling the moving mechanism to move the second photographing assembly downward from a preset height range directly above the measured object; S5: controlling the second photographing assembly to take pictures at equal time intervals during the downward movement to obtain second image information at multiple different measurement heights; S6: calculating an image sharpness coefficient corresponding to each second image information; S7: associating and mapping each measurement height and the corresponding image sharpness coefficient to form a mapping relationship, and determining a measurement height corresponding to a maximum image sharpness coefficient as a target measurement height according to the mapping relationship. S8: controlling the second shooting component to move to the target measurement height for shooting, to obtain third image information containing two ends of the measured object; S9: identifying the two ends of the measured object according to the third image information, and calculating a pixel value of the distance between the two ends of the measured object; S10: determining the actual length of the measured object according to the pixel value.

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