Optical fiber automatic detection device based on visual feedback

Abstract

The utility model discloses a kind of automatic detection device of optical fiber based on visual feedback, comprising: clamping mechanism, for clamping fixed optical fiber to be measured;Pulse air blowing mechanism, for the air blowing of optical fiber to be measured to exert pressure to make test position vibrate, the pulse air blowing mechanism is connected with external gas supply equipment, and pass through solenoid valve control gas circuit to control air blowing period;Observation display unit, for real-time acquisition image information of optical fiber to be measured vibration process and real-time display;And, main control processor, for image processing and storage.The utility model can effectively solve the problem that the detection standard of elastic fiber is inconsistent, improve the consistency and standardization of detection, and realize automatic air blowing elastic fiber, reduce manual operation, improve the detection efficiency, avoid contact with optical fiber simultaneously, and then reduce the situation that optical fiber appears dirty, improve the accuracy of optical fiber quality and detection result, and then improve the yield of optical fiber patch cord, optical fiber adapter and other product processing.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber inspection technology, and in particular to an automatic optical fiber inspection device based on visual feedback. Background Technology

[0002] During the manufacturing of fiber optic adapters and patch cords, defect detection of the optical fibers is necessary to ensure fiber quality. Current detection methods involve manually vibrating the fiber with a wire to induce vibration at a specific amplitude, followed by observation with a magnifying glass or similar tools to check for cracks. However, manual wire vibration has two drawbacks: firstly, the force applied is uncontrollable, leading to inconsistent detection results; secondly, manual contact with the fiber can cause contamination, affecting fiber quality and test results. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic fiber optic inspection device based on visual feedback, which has the advantages of improving inspection consistency and avoiding fiber optic contamination.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] According to an embodiment of this disclosure, a visual feedback-based automatic fiber optic inspection device is provided, comprising:

[0006] Clamping mechanism, used to clamp and fix the optical fiber to be tested;

[0007] The pulse air blowing mechanism is used to blow air into the optical fiber under test to apply pressure and cause the test position to vibrate. The pulse air blowing mechanism is connected to an external air supply device and controls the air circuit opening and closing through a solenoid valve to control the blowing cycle.

[0008] The observation and display unit is used to acquire and display image information of the vibration process of the optical fiber under test in real time; and,

[0009] The main control processor is used for image processing and storage.

[0010] To achieve the above technical solution, during fiber optic testing, the clamping mechanism first clamps and fixes the fiber under test in a predetermined position. The main controller controls the pulse air blowing mechanism to pulse air blowing onto the fiber under test at a predetermined air pressure and cycle. When the airflow acts on the fiber under test, the fiber under test will be subjected to a certain force, and the fiber under test will vibrate according to a certain amplitude. By controlling the air pressure, the amplitude can be adjusted accordingly to meet different testing requirements. During the vibration of the fiber under test, the observation and display module acquires and displays images in real time, allowing the testing personnel to more conveniently and clearly observe the state of the fiber under test, improving testing efficiency. It also ensures that the pressure of each pulse air blowing is consistent, thus effectively solving the problem of inconsistent fiber elastic testing standards, improving the consistency and standardization of testing, and realizing automated air blowing for fiber elasticity, reducing manual operation, improving testing efficiency, and avoiding contact with the fiber, thereby reducing fiber contamination, improving fiber quality and the accuracy of testing results, and ultimately improving the yield rate of fiber optic patch cords, fiber optic adapters, and other products.

[0011] In some exemplary embodiments, the pulse air blowing mechanism includes an electrically controlled pressure regulating valve, the air inlet of which is connected to an external air supply device and the air outlet of which is connected to the solenoid valve, for adjusting the output air pressure;

[0012] The solenoid valve is connected to an air blowing pipe at its outlet for blowing air into the optical fiber under test.

[0013] To achieve the above technical solution, a stable air pressure is provided by an external air supply device. The output air pressure can be adjusted by an electronically controlled pressure regulating valve. The opening and closing of the solenoid valve controls the flow of air, which controls the pulse period. The air blowing tube can then stably blow air into the optical fiber under test. One pulse of air blowing is equivalent to one fiber-springing operation.

[0014] In some exemplary embodiments, the air tube is a universal bamboo-joint tube.

[0015] The above technical solution allows for arbitrary changes in the blowing direction to meet different testing requirements.

[0016] In some exemplary embodiments, the observation display unit includes:

[0017] A high-frame dynamic camera is used to capture image information of the vibration process of the optical fiber under test in real time.

[0018] A display for displaying images captured by the high frame rate dynamic camera in real time.

[0019] The above technical solution enables the high-frame-rate dynamic camera to dynamically capture images of the optical fiber under test, which are then displayed on a monitor, making it easier to observe whether there are defects in the optical fiber.

[0020] In some exemplary embodiments, the clamping mechanism includes:

[0021] A support platform for placing the optical fiber to be tested;

[0022] A movable clamping plate is used to clamp the optical fiber under test; and,

[0023] A clamping drive is used to drive the movable pressure plate to reciprocate up and down to press or release the optical fiber under test.

[0024] To achieve the above technical solution, when performing fiber optic testing, the fiber to be tested is first placed on the support platform, and then clamped by the clamping drive component to ensure the stability of the fiber testing.

[0025] In some exemplary embodiments, the clamping drive is a pneumatic cylinder or an electric cylinder.

[0026] In some exemplary embodiments, the clamping drive is also connected to a control switch for controlling the extension and retraction of the clamping drive.

[0027] Implementing the above technical solution facilitates layout and sampling control.

[0028] In some exemplary embodiments, the movable pressure plate and / or support platform are further provided with an elastic buffer layer.

[0029] Implementing the above technical solution can effectively prevent excessive clamping force from damaging the optical fiber.

[0030] In summary, compared with the prior art, this utility model has the following beneficial effects:

[0031] This utility model embodiment provides a visual feedback-based automatic fiber optic testing device, comprising: a clamping mechanism for clamping and fixing the fiber optic cable under test; a pulsed air blowing mechanism for blowing air into the fiber optic cable under test to apply pressure and cause vibration at the test position, wherein the pulsed air blowing mechanism is connected to an external air supply device and controls the air flow through a solenoid valve to control the blowing cycle; an observation and display unit for acquiring and displaying image information of the vibration process of the fiber optic cable under test in real time; and a main control processor for image processing and storage. During fiber optic testing, the clamping mechanism first clamps and fixes the fiber under test in a predetermined position. The main controller then controls the pulse air blowing mechanism to pulse air onto the fiber under test at a predetermined air pressure and cycle. When the airflow acts on the fiber under test, it is subjected to a certain force, causing it to vibrate with a certain amplitude. The amplitude can be adjusted by controlling the air pressure to meet different testing requirements. During the vibration of the fiber under test, images are acquired and displayed in real time through the observation and display module, allowing testing personnel to more easily and clearly observe the state of the fiber under test, improving testing efficiency. This also ensures consistent pressure for each pulse air blowing, effectively solving the problem of inconsistent fiber elastic testing standards, improving testing consistency and standardization, and achieving automated air blowing for fiber elasticity. This reduces manual operation, improves testing efficiency, and avoids contact with the fiber, reducing fiber contamination and improving fiber quality and the accuracy of testing results. Ultimately, this increases the yield rate of fiber optic patch cords, fiber optic adapters, and other products. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a fiber optic automatic detection device based on visual feedback, according to Embodiment 1 of this utility model.

[0033] Figure 2 This is a schematic diagram of a fiber optic automatic detection device based on visual feedback, which is a second embodiment of this utility model.

[0034] The numbers and letters in the diagram represent the names of the corresponding components:

[0035] 10. Clamping mechanism; 11. Supporting platform; 12. Movable pressure plate; 13. Clamping drive component; 14. Control switch; 15. Elastic buffer layer; 20. Pulse air blowing mechanism; 21. Electrically controlled pressure regulating valve; 22. Solenoid valve; 23. Air blowing pipe; 30. Observation and display unit; 31. High frame rate dynamic camera; 32. Display; 40. Main control processor; 50. External air supply equipment; 60. Fiber optic cable under test. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Example 1

[0038] like Figure 1 As shown, this utility model provides an automatic fiber optic testing device based on visual feedback, comprising: a clamping mechanism 10 for clamping and fixing the fiber optic cable 60 to be tested; a pulsed air blowing mechanism 20 for blowing air into the fiber optic cable 60 to apply pressure and cause vibration at the test position, the pulsed air blowing mechanism being connected to an external air supply device 50 and controlling the air flow through a solenoid valve 22 to control the blowing cycle; an observation and display unit 30 for acquiring and displaying image information of the vibration process of the fiber optic cable 60 in real time; and a main control processor 40 for image processing and storage.

[0039] Specifically, the clamping mechanism 10 includes: a support platform 11 for placing the optical fiber 60 to be tested; a movable pressure plate 12 for pressing the optical fiber 60; and a clamping drive 13 for driving the movable pressure plate 12 to reciprocate up and down to press or release the optical fiber 60. It is understood that, to facilitate the restraint of the optical fiber 60, corresponding limiting grooves can be provided on both the support platform 11 and the movable pressure plate 12. The clamping drive 13 is a cylinder or an electric cylinder. Preferably, the clamping drive 13 is a cylinder, which operates more rapidly. The controller of the clamping drive 13 is connected to the main control processor 40, so that the main control processor 40 can control the action of the clamping drive 13. During optical fiber testing, the optical fiber 60 is first placed on the support platform 11, and then clamped by the clamping drive 13, thereby ensuring the stability of the optical fiber 60 testing.

[0040] The pulse air blowing mechanism 20 includes an electrically controlled pressure regulating valve 21. The air inlet of the electrically controlled pressure regulating valve 21 is connected to an external air supply device 50, and the air outlet is connected to a solenoid valve 22 for adjusting the output air pressure. The air outlet of the solenoid valve 22 is connected to an air blowing pipe 23 for blowing air into the optical fiber 60 under test. The external air supply device 50, the electrically controlled pressure regulating valve 21, and the solenoid valve 22 are connected in sequence through an air pipe. The air blowing pipe 23 can be a rigid pipe such as a plastic pipe or a stainless steel pipe, and the air blowing pipe 23 can be connected to the outlet of the solenoid valve 22 by means of plug-in connection, threaded connection, etc. The control ends of the electrically controlled pressure regulating valve 21 and the solenoid valve 22 are both connected to the main control processor 40, that is, the main control processor 40 can control the pressure regulating opening of the electrically controlled pressure regulating valve 21 and the on / off frequency of the solenoid valve 22.

[0041] A stable air pressure is provided by an external air supply device 50. The output air pressure can be adjusted by an electronically controlled pressure regulating valve 21. The opening and closing of the solenoid valve 22 controls the flow of air, which controls the pulse period. The air blowing pipe 23 can stably blow air into the optical fiber 60 under test. One pulse of air blowing is equivalent to one fiber-splitting operation.

[0042] The observation and display unit 30 includes: a high-frame-rate dynamic camera 31 for capturing image information of the fiber optic cable 60 under test during vibration in real time; and a display 32 for displaying the images captured by the high-frame-rate dynamic camera 31 in real time. The high-frame-rate dynamic camera 31 is connected to the display 32, allowing the images captured by the high-frame-rate dynamic camera 31 to be directly displayed on the display 32. Both the high-frame-rate dynamic camera 31 and the display 32 are connected to the main control processor 40. The images captured by the high-frame-rate dynamic camera 31 can be sent to the main control processor 40 for storage, or the images can be processed by a preset algorithm of the main control processor 40 before being displayed on the display 32. The high-frame-rate dynamic camera 31 can dynamically capture images of the fiber optic cable 60 under test, which are then displayed on the display 32, making it easier to observe whether there are defects in the fiber optic cable. In some embodiments, the main control processor 40 can also be configured to process the images captured by the high-frame-rate dynamic camera 31 to determine the amplitude of the fiber optic cable 60 under test, and adjust the pressure value controlled by the electronically controlled pressure regulating valve 21 according to the amplitude, thereby achieving adaptive air pressure adjustment.

[0043] The main control processor 40 may include, for example, a microcontroller unit (MCU), a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a programmable controller, a programmable logic device (PLD), or other similar devices or combinations thereof, and this invention is not limited thereto. Alternatively, in some embodiments, the functions of the main control processor 40 may be implemented by one or more circuits, and this invention does not limit the hardware implementation of the functions of the main control processor 40.

[0044] During fiber optic testing, the clamping mechanism 10 first clamps and fixes the fiber optic cable 60 to be tested at a predetermined position. The main controller controls the pulse air blowing mechanism 20 to blow pulsed air onto the fiber optic cable 60 at a predetermined air pressure and cycle. When the airflow acts on the fiber optic cable 60, it will be subjected to a certain force, causing it to vibrate with a certain amplitude. The amplitude can be adjusted by controlling the air pressure to meet different testing requirements. During the vibration of the fiber optic cable 60, images are acquired and displayed in real time through the observation and display module, allowing the testing personnel to more easily and clearly observe the state of the fiber optic cable 60, improving testing efficiency. It also ensures that the pressure of each pulse air blowing is consistent, effectively solving the problem of inconsistent fiber optic cable testing standards, improving the consistency and standardization of testing, and realizing automated air blowing for fiber optic cable elasticity, reducing manual operation, improving testing efficiency, and avoiding contact with the fiber optic cable, thus reducing fiber optic cable contamination, improving fiber optic cable quality and the accuracy of testing results, and ultimately improving the yield rate of fiber optic patch cords, fiber optic adapters, and other products.

[0045] Example 2

[0046] The difference between this embodiment and Embodiment 1 is that: Figure 2 As shown, in this embodiment, the air blowing tube 23 is a universal bamboo joint tube, which can arbitrarily change the air blowing direction to meet different detection requirements.

[0047] Meanwhile, the clamping drive 13 is also connected to a control switch 14, which is used to control the extension and retraction of the clamping drive 13 to facilitate the laying and sampling control. The control switch 14 can be a foot switch, a hand-operated push switch, etc.

[0048] Furthermore, an elastic buffer layer 15 is provided on the movable pressure plate 12 and / or the support platform 11. The elastic buffer layer 15 can be, for example, a rubber layer, a sponge layer, etc., and can be bonded and fixed to the surface of the movable pressure plate 12 and the support platform 11. Alternatively, in some embodiments, the elastic buffer layer 15 can be replaced by an elastic connection form such as a spring support plate, thereby effectively preventing excessive clamping force from damaging the optical fiber.

[0049] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A fiber optic automatic inspection device based on visual feedback, characterized in that, include: Clamping mechanism, used to clamp and fix the optical fiber to be tested; The pulse air blowing mechanism is used to blow air into the optical fiber under test to apply pressure and cause the test position to vibrate. The pulse air blowing mechanism is connected to an external air supply device and controls the air circuit opening and closing through a solenoid valve to control the blowing cycle. The observation and display unit is used to acquire and display image information of the vibration process of the optical fiber under test in real time; and, The main control processor is used for image processing and storage.

2. The fiber optic automatic detection device based on visual feedback according to claim 1, characterized in that, The pulse air blowing mechanism includes an electrically controlled pressure regulating valve, the air inlet of which is connected to an external air supply device and the air outlet of which is connected to the solenoid valve, for adjusting the output air pressure; The outlet of the solenoid valve is connected to an air blowing pipe for blowing air into the optical fiber under test.

3. The fiber optic automatic detection device based on visual feedback according to claim 2, characterized in that, The air blowing tube is a universal bamboo joint tube.

4. The fiber optic automatic inspection device based on visual feedback according to claim 1, characterized in that, The observation display unit includes: A high-frame dynamic camera is used to capture image information of the vibration process of the optical fiber under test in real time. A display for displaying images captured by the high-frame-rate dynamic camera in real time.

5. The fiber optic automatic inspection device based on visual feedback according to claim 1, characterized in that, The clamping mechanism includes: A support platform for placing the optical fiber to be tested; A movable clamping plate is used to clamp the optical fiber under test; and, A clamping drive is used to drive the movable pressure plate to reciprocate up and down to press or release the optical fiber under test.

6. The fiber optic automatic inspection device based on visual feedback according to claim 5, characterized in that, The clamping drive component is a pneumatic cylinder or an electric cylinder.

7. The fiber optic automatic inspection device based on visual feedback according to claim 5 or 6, characterized in that, The clamping drive is also connected to a control switch for controlling the extension and retraction of the clamping drive.

8. The fiber optic automatic inspection device based on visual feedback according to claim 5, characterized in that, The movable pressure plate and / or supporting platform are also provided with an elastic buffer layer.

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