An optical fiber transmission detection system

Abstract

The utility model discloses a kind of optical fiber transmission detection systems, belong to the detection technical field of optical fiber dynamic rotation transmission quality, for solving the problem of low detection efficiency of optical fiber detection device.The optical fiber transmission detection system of the utility model, including to-be-measured optical fiber, rotating unit, imaging unit, parallel light source and computing unit, one end of to-be-measured optical fiber is fixedly connected with one end of rotating unit and center line coincides, another end of to-be-measured optical fiber is connected parallel light source, imaging unit is rotatably connected with another end of rotating unit, imaging unit shoots the light spot image emitted by to-be-measured optical fiber at multiple rotating positions and sends to computing unit, and computing unit can calculate and output the coincidence rate of multiple light spot images.The optical fiber transmission detection system of the utility model does not need artificial multiple adjustment equipment or image analysis, shortens detection procedure, improves overall efficiency.

Description

Technical Field

[0001] This invention belongs to the field of optical fiber dynamic rotation transmission quality detection technology, and relates to an optical fiber transmission detection system. Background Technology

[0002] With the development of information technology, the types of signals that need to be transmitted via rotation are increasing. Optical signals, with their low latency, large capacity, lack of radiation, and interference resistance, are an ideal future transmission medium. Among these, the collimation quality of the optical fiber directly affects the transmission efficiency of the optical signal and the performance of the optical system. Detection methods based on light spot imaging have become the mainstream technology due to their non-contact and highly intuitive advantages.

[0003] However, existing fiber optic inspection devices based on spot imaging usually rely on manual or semi-automated analysis, which is difficult to meet the inspection efficiency requirements of high-speed mass production scenarios, and technological optimization and breakthroughs are urgently needed. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide an optical fiber transmission detection system to solve the technical problem of low detection efficiency in optical fiber detection devices.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions.

[0006] This utility model provides an optical fiber transmission detection system, characterized in that it includes an optical fiber under test, a rotation unit, an imaging unit, a parallel light source, and a computing unit; one end of the optical fiber under test is fixedly connected to one end of the rotation unit and their center lines coincide, and the other end of the optical fiber under test is connected to the parallel light source; the imaging unit is rotatably connected to the other end of the rotation unit; the imaging unit captures light spot images emitted by the optical fiber under test at multiple rotation positions and sends them to the computing unit, and the computing unit can calculate and output the overlap rate of multiple light spot images.

[0007] Furthermore, the imaging unit includes a camera and a magnifying glass, with the magnifying glass mounted in front of the camera lens.

[0008] Furthermore, the rotating unit includes a rotating body, a first bearing, and a second bearing, with the first bearing and the second bearing located at opposite ends of the rotating body.

[0009] Furthermore, the first bearing and the second bearing are coaxially arranged, and their outer circles are both fixed to the inner wall of the rotating body.

[0010] Furthermore, the rotating unit also includes a fiber optic mounting base, which is fixedly connected to one end of the rotating body.

[0011] Furthermore, the camera is fixedly connected to the inner circle of the second bearing.

[0012] Furthermore, the fiber optic mounting base includes a fiber optic mounting hole, in which the fiber optic cable to be tested is fixed.

[0013] Furthermore, the centerline of the fiber optic mounting hole coincides with the centerline of the rotating body.

[0014] Furthermore, the contact surface between the fiber optic mounting base and the end face of the rotating body is perpendicular to the centerline of the rotating body.

[0015] Furthermore, the fiber optic mounting base is fixedly connected to the rotating body by four fixing screws.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] 1. The fiber optic transmission detection system of this utility model, through the coordinated action of the rotation unit, imaging unit and computing unit, can complete the acquisition of light spots and data calculation at multiple rotation angles of the fiber, without the need for manual adjustment of equipment or analysis of images, thus shortening the detection process and improving overall efficiency.

[0018] 2. The fiber optic transmission detection system of this utility model, by adopting a parallel light source, can provide uniform and directionally stable incident light to the fiber under test, ensuring that the shape and size of the light spot emitted by the fiber under test are closer to the real collimation state, reducing light source interference from the source, and laying an accurate image foundation for subsequent calculation of light spot overlap rate.

[0019] 3. The optical fiber transmission detection system of this utility model ensures the rotational accuracy during the rotation process by aligning the center lines of each unit; moreover, the system has a compact structure design, which reduces interference from external factors and further ensures the stability of the detection results, providing a more reliable solution for optical fiber collimation quality detection.

[0020] 4. The fiber optic transmission detection system of this utility model can accurately identify the misalignment difference of the light spot under different rotation angles of the fiber by setting a magnifying glass in front of the camera lens, avoid the error in the coincidence judgment caused by the loss of light spot details, further improve the accuracy of fiber optic collimation quality detection, and provide a clear image basis for subsequent accurate output of detection results.

[0021] 5. The fiber optic transmission detection system of this utility model ensures rotational accuracy during rotation and improves the accuracy of detection results by setting the first bearing and the second bearing coaxially.

[0022] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the optical fiber transmission detection system according to an embodiment of the present invention.

[0024] Figure label:

[0025] 1-Fiber optic cable under test; 2-Rotation unit; 21-Rotation body; 22-Fiber optic mounting base; 221-Fiber optic mounting hole; 23-First bearing; 24-Second bearing; 25-Fixing screw; 3-Imaging unit; 31-Camera; 32-Magnifying glass; 4-Parallel light source; 5-Computing unit. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0027] Example

[0028] This embodiment provides an optical fiber transmission detection system, such as Figure 1 As shown, it includes an optical fiber under test 1, a rotation unit 2, an imaging unit 3, a parallel light source 4, and a computing unit 5; one end of the optical fiber under test 1 is fixedly connected to one end of the rotation unit 2 and their center lines coincide, and the other end of the optical fiber under test 1 is connected to the parallel light source 4; the imaging unit 3 is rotatably connected to the other end of the rotation unit 2; the imaging unit 3 captures light spot images emitted by the optical fiber under test 1 at multiple rotation positions and sends them to the computing unit 5, and the computing unit 5 can output the overlap rate of multiple light spot images.

[0029] When performing fiber optic testing using the fiber optic transmission testing system of this embodiment, the parallel light source 4 connected to one end of the fiber optic cable 1 under test is first turned on, and a light spot is emitted from the other end of the fiber optic cable 1. This light spot is captured by the imaging unit 3 and sent to the computing unit 5 for storage. Then, the parallel light source 4 is turned off. After rotating the fiber optic cable 1 under test and the imaging unit 3 relative to each other, the operation of turning on the parallel light source 4, capturing and sending the stored light spot image is repeated. After repeating this operation multiple times, the computing unit 5 compares the multiple captured light spot images and determines whether the collimation quality of the fiber optic cable 1 under test is qualified based on the preset overlap rate of qualified light spots.

[0030] The fiber optic collimation quality inspection system of this embodiment, through the collaboration of the rotation unit 2, imaging unit 3, and calculation unit 5, can simultaneously complete multi-angle spot acquisition and data calculation, eliminating the need for multiple manual adjustments to the equipment or image analysis, shortening the inspection process, and improving overall efficiency. By employing a parallel light source 4, it can provide uniform and directionally stable incident light to the fiber optic cable 1 under test, ensuring that the shape and size of the emitted spot from the fiber optic cable 1 more closely matches the true collimation state, reducing light source interference from the source, and laying an accurate image foundation for subsequent spot overlap rate calculation. At the same time, the system structure of this embodiment is compact, with the center lines of each unit coinciding, reducing interference from external factors, further ensuring the stability of the inspection results, and providing a more reliable solution for fiber optic collimation quality inspection.

[0031] To more accurately compare the overlap of light spots, such as Figure 1 As shown, the imaging unit 3 includes a camera 31 and a magnifying glass 32. The magnifying glass 32 is installed in front of the lens of the camera 31 to magnify the light spot emitted from the optical fiber 1 under test. It can clearly magnify the details of the light spot (such as edge contours and areas with uneven energy distribution), solving the problem of blurred details and difficulty in capturing subtle deviations when directly imaging small-sized light spots. This allows the computing unit to accurately identify the misalignment differences of the light spot under different rotation angles when analyzing the overlap rate of the light spot, avoiding the error in the overlap rate judgment caused by the loss of light spot details, further improving the accuracy of optical fiber collimation quality detection, and providing a clear image basis for the subsequent accurate output of detection results.

[0032] like Figure 1 As shown, the rotating unit 2 includes a rotating body 21, an optical fiber mounting base 22, a first bearing 23, and a second bearing 24.

[0033] The rotating body 21 is a cylindrical shell, and the fiber optic mounting base 22 is fixedly connected to one end of the rotating body 21 by fixing screws 25.

[0034] like Figure 1 As shown, the fiber optic mounting base 22 includes a fiber optic mounting hole 221. The fiber optic cable 1 to be tested is fixed in the fiber optic mounting hole 221. The center line of the fiber optic mounting hole 221 coincides with the center line of the rotating body 21, so that the center line of the fiber optic cable 1 to be tested located in the fiber optic mounting hole 221 coincides with the center line of the rotating body 21.

[0035] For example, the contact surface between the fiber optic mounting base 22 and the end face of the rotating body 21 is perpendicular to the center line of the rotating body 21 to ensure the rotational accuracy of the fiber optic mounting base 22. For example, four fixing screws 25 are evenly arranged in a circle to ensure the installation balance and stability of the fiber optic mounting base 22 and the rotating body 21, further ensuring the rotational accuracy of the fiber optic mounting base 22.

[0036] like Figure 1As shown, the first bearing 23 and the second bearing 24 are coaxially arranged and located at both ends of the rotating body 21. The outer circles of both the first bearing 23 and the second bearing 24 are fitted and fixedly connected to the inner wall of the rotating body 21. The outer circle of the first bearing 23 also fits with the fiber optic mounting base 22 to ensure concentricity with the rotating body 21 and the fiber optic mounting hole 221, thereby ensuring rotational accuracy. The inner circle of the second bearing 24 fits with the outer wall of the imaging unit 3, and the camera 31 is fixedly connected to the inner circle of the second bearing 24. By setting the first bearing 23 and the second bearing 24 coaxially, the relative rotation of the rotating unit 2 and the imaging unit 3 is achieved, ensuring rotational accuracy during the rotation process and improving the accuracy of the detection results.

[0037] The calculation unit 5 includes an image processing module. The imaging unit 3 transmits each acquired spot image to the calculation unit 5. The image processing module processes the image and stores it. After one test cycle is completed, it calculates the overlap rate of all spot image pixels according to a preset threshold and outputs the overlap rate value. Finally, according to the qualified overlap rate specified in the optical fiber quality index, if the spot overlap rate of the optical fiber under test 1 is greater than the qualified overlap rate, the optical fiber under test 1 can be judged as qualified; otherwise, it is unqualified.

[0038] For example, the computing unit 5 in this embodiment deploys the Visual Studio development environment and loads the OpenCV image processing database to process the light spot image.

[0039] It should be noted that the image processing method or control method of the computing unit 5 of this utility model are existing technologies and will not be described in detail here.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fiber optic transmission detection system, characterized in that, It includes the fiber under test (1), the rotation unit (2), the imaging unit (3), the parallel light source (4), and the computing unit (5); One end of the optical fiber under test (1) is fixedly connected to one end of the rotating unit (2) and their center lines coincide. The other end of the optical fiber under test (1) is connected to the parallel light source (4). The imaging unit (3) is rotatably connected to the other end of the rotating unit (2); the imaging unit (3) captures light spot images emitted by the optical fiber (1) under test at multiple rotation positions and sends them to the calculation unit (5); the calculation unit (5) can calculate and output the overlap rate of multiple light spot images.

2. The optical fiber transmission detection system according to claim 1, characterized in that, The imaging unit (3) includes a camera (31) and a magnifying glass (32), with the magnifying glass (32) mounted in front of the lens of the camera (31).

3. The optical fiber transmission detection system according to claim 2, characterized in that, The rotating unit (2) includes a rotating body (21), a first bearing (23) and a second bearing (24), with the first bearing (23) and the second bearing (24) located at both ends of the rotating body (21).

4. The optical fiber transmission detection system according to claim 3, characterized in that, The first bearing (23) and the second bearing (24) are coaxially arranged and their outer circles are fixed to the inner wall of the rotating body (21).

5. The optical fiber transmission detection system according to claim 4, characterized in that, The rotating unit (2) also includes an optical fiber mounting base (22), which is fixedly connected to one end of the rotating body (21).

6. The optical fiber transmission detection system according to claim 4, characterized in that, The camera (31) is fixedly connected to the inner circle of the second bearing (24).

7. The fiber optic transmission detection system according to claim 5, characterized in that, The fiber optic mounting base (22) includes a fiber optic mounting hole (221), and the fiber optic cable (1) to be tested is fixed inside the fiber optic mounting hole (221).

8. The optical fiber transmission detection system according to claim 7, characterized in that, The centerline of the fiber mounting hole (221) coincides with the centerline of the rotating body (21).

9. The optical fiber transmission detection system according to claim 8, characterized in that, The contact surface between the fiber optic mounting base (22) and the end face of the rotating body (21) is perpendicular to the center line of the rotating body (21).

10. The optical fiber transmission detection system according to any one of claims 7 to 9, characterized in that, The fiber optic mounting base (22) is fixedly connected to the rotating body (21) by four fixing screws (25).

Images