MT-FA fiber sequence automatic detection device

Abstract

The utility model discloses an MT-FA fiber sequence automatic detection device, which is characterized in that the MT-FA fiber sequence automatic detection device comprises a polarity tester, a test bus, a multi-core adapter, an FA placing tool, a 45-degree specular reflection device, a camera and a computer control system. When the FA end face angle reaches a total reflection critical angle, the FA end is moved to the position under the camera through the linear moving mechanism, the FA inclined end face directly and totally reflects detection red light to the camera, the camera feeds back shooting data to the computer control system, and the computer control system calculates the abscissa of each channel of the FA according to the shooting data. If the two abscissas are inconsistent, it is indicated that the fiber sequence is wrong, the computer control system gives an alarm, the detection result is displayed through a display screen, and meanwhile detection data are stored in a disk; the device is simple in structure, convenient to operate and high in detection efficiency, and the misjudgment rate and the leakage rate are zero.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical passive device technical field especially relates to a MT-FA fiber sequence automatic detection device. BACKGROUND

[0002] MT-FA is a kind of very important optical passive device in communication industry, and its application in high-speed optical module is very widespread.The structure composition is mainly connected by optical fiber to connect MT, FA two connectors, FA structure is various, and the pitch of V slot is particularly small (such as 0.127mm), and the finished product optical fiber assembly must have one end assembly to rely on manual work, and the optical fiber used is mostly transparent optical fiber, and there is a certain possibility to cause channel fiber sequence error in the process of FA assembly and MT assembly fiber insertion.Therefore, the fiber sequence of product needs to be tested and confirmed in the inspection section.Because FA is non-contact coupling, the fiber sequence testing method commonly used in the current industry is that MT end is connected to test optical fiber jumper and then red light is passed according to channel order, and then manual naked eye is used to judge whether the polarity is correct, the operation efficiency is low, and there are problems such as misjudgment and loss. UTILITARY MODEL CONTENT

[0003] To solve the above technical problems of prior art, the utility model provides a kind of MT-FA fiber sequence automatic detection device, 45 ° mirror surface reflection device is set to reflect the detection red light from FA end to camera, camera will shoot data feedback to computer control system, computer control system calculates the coordinate of each optical fiber channel of FA according to shooting data and compares with the correct coordinate set in computer, if the coordinate is inconsistent, computer control system will issue alarm, and detection result is shown on display screen, and detection data is stored at the same time.

[0004] In order to achieve the above object, the utility model provides a kind of MT-FA fiber sequence automatic detection device, including polarity tester, test bus, multicore adapter, FA placement tool, 45 ° mirror surface reflection device, camera and computer control system, the polarity tester is used to send red light to the product to be measured, and the polarity tester is connected with multicore adapter by test bus, the multicore adapter is connected with the one-to-one corresponding connection of several optical fibers of the MT end of the product to be measured by several test optical fiber jumpers, the FA placement tool is located at the right side of multicore adapter, and the FA placement tool includes adsorption platform and linear motion mechanism, the adsorption platform is located on linear motion mechanism, and linear motion mechanism is used to drive adsorption platform horizontal transverse linear movement, the FA end of the product to be measured is fixedly connected on adsorption platform by adsorption, the 45 ° mirror surface reflection device is located on FA placement tool, and is located on the light ray emission side of the FA end of the product to be measured, and the 45 ° mirror surface of 45 ° mirror surface reflection device is towards FA end, the camera is located directly above 45 ° mirror surface reflection device, and camera lens is downward, the camera is connected with computer control system, and computer control system includes display screen, first button for controlling polarity tester to open or close and second button for controlling linear motion mechanism to start or stop, the polarity tester is electrically connected with first button, the linear motion mechanism is electrically connected with second button, and linear motion mechanism is connected with computer control system;

[0005] When the included angle between the FA end face of the product to be measured and vertical face is less than total reflection critical angle, red light refracted from the FA end face will irradiate on 45 ° mirror surface reflection device, and after 45 ° mirror surface reflection, enter camera lens, and camera sends the red light information shot to computer control system;

[0006] When the included angle between the FA end face of the product to be measured and vertical face is greater than or equal to total reflection critical angle, red light emitted from the FA end is directly upward total reflection by FA end face, at this time, camera position cannot receive red reflection light, and computer control system does not receive the feedback information of camera, will issue control instruction, start linear motion mechanism, drive adsorption platform and the FA end of the product to be measured on adsorption platform to move linearly forward to the camera directly below, so that red light from the FA port is totally reflected into camera lens by port inclined plane, and camera sends the red light information shot to computer control system.

[0007] Further, the vacuum generator is electrically connected with the third button on the computer control system, the L-shaped negative pressure hole is arranged in the adsorption platform, one end of the L-shaped negative pressure hole penetrates the upper side of the adsorption platform, and the other end penetrates the left side of the adsorption platform, the lower bottom surface sealing cover of the FA end of the product to be tested is arranged above the L-shaped negative pressure hole on the upper side of the adsorption platform, and the vacuum generator is in sealing connection with the L-shaped negative pressure hole on the left side of the adsorption platform through the air pipe, so that the FA end is adsorbed on the adsorption platform.

[0008] Further, the test optical fiber jumper includes an optical fiber jumper and a connector, and the connector is an LC or FC or SC connector matched with the MT end of the product to be tested.

[0009] Further, the alarm is a buzzer or an audible and light alarm.

[0010] Further, the linear movement mechanism adopts a ball screw linear movement mechanism or an air cylinder.

[0011] Further, the ball screw linear movement mechanism includes a screw rod base, a ball screw rod mounted on the screw rod base, a screw rod nut in threaded connection with the ball screw rod, and a motor for driving the ball screw rod to rotate, so that the screw rod nut moves linearly along the screw rod axis, the adsorption platform is arranged above the screw rod nut, so that the adsorption platform moves linearly together with the screw rod nut, a downward step is arranged on the right side of the adsorption platform, and the 45° mirror surface reflection device is mounted on the step.

[0012] The detection method of the MT-FA fiber sequence automatic detection device includes the following steps:

[0013] 1) the FA end of the MT-FA product to be tested is placed on the adsorption platform, the lower bottom surface sealing cover of the FA end is arranged above the upper end hole of the L-shaped negative pressure hole, and the vacuum generator is started to adsorb and fix the FA end of the product to be tested;

[0014] 2) select the test optical fiber jumper with the LC or FC or SC connector matched with the product to be tested, and connect the multi-core adapter with each optical fiber channel of the MT end of the product to be tested one by one;

[0015] 3) set the correct horizontal coordinates of the red light of each optical fiber channel of the FA end of the product to be tested in the computer control system in advance (the FA ends of each optical fiber channel are arranged in a row, and the vertical coordinates are consistent);

[0016] 4) start the polar tester to emit red light, when the angle between the FA end face of the product to be tested and the vertical face is < the critical angle of total reflection, the red light from the FA end will be refracted on the 45° mirror reflection device, the 45° mirror reflection device will reflect the red light upward into the camera lens, the camera will send the information to the computer control system;

[0017] When the angle between the FA end face of the product to be tested and the vertical face is ≥ the critical angle of total reflection, the red light from the FA end will be totally reflected on the inclined end face of the FA, and will not be refracted on the front 45° mirror reflection device, the computer control system will not receive the shooting information sent by the camera, and will send a control instruction to control the linear movement mechanism to start, drive the adsorption platform and the FA end to move linearly forward to the position directly below the camera, so that the red light totally reflected upward from the FA end face enters the camera lens, and the camera will send the shooting information to the computer control system;

[0018] 5) the computer control system calculates the horizontal coordinate of the red light from each optical fiber channel of the FA according to the received information (the direction of the horizontal coordinate is consistent with the horizontal coordinate set in step 3), compares the calculated horizontal coordinate with the horizontal coordinate set in step 3, and if they are consistent, it indicates that the optical fiber sequence is correct, if they are inconsistent, it indicates that the optical fiber sequence is incorrect, the computer control system will start the alarm to alarm, and the detection result will be displayed on the display screen, and the fiber sequence detection result will be electronically archived.

[0019] Compared with the prior art, the utility model has the advantages of simple structure, convenient operation, high detection efficiency, 0% of misjudgment rate and loss rate, low requirement for personnel operation, low manufacturing cost, and significant detection advantage for the product with a V groove pitch of 0.127mm. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of the utility model embodiment (the angle between the FA end face and the vertical face is < the critical angle of total reflection);

[0021] Figure 2 It is a structure schematic view of the utility model embodiment (the angle between the FA end face and the vertical face is ≥ the critical angle of total reflection);

[0022] Figure 3 It is a structure schematic view of the linear movement mechanism of the utility model embodiment.

[0023] In the figure: 1, polarity tester, 2, test bus, 3, multi-core adapter, 4, FA placement tool, 41, adsorption platform, 411, L-shaped negative pressure hole, 412, step, 42, linear movement mechanism, 421, screw rod base, 422, ball screw, 423, screw nut, 424, motor, 5, 45° mirror surface reflection device, 6, camera, 7, computer control system, 71, display screen, 72, first button, 73, second button, 74, third button, 8, test optical fiber jumper, 9, product to be tested, 10, vacuum generator, 11, air pipe, 12, alarm. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] As shown in Figure 1 , Figure 2 embodiments of the utility model include polarity tester 1, test bus 2, multi-core adapter 3, FA placement tool 4, 45° mirror surface reflection device 5, camera 6 and computer control system 7, polarity tester 1 is used for sending red light to product to be tested 10, polarity tester 1 is connected with multi-core adapter 3 through test bus 2, multi-core adapter 3 is connected with the optical fiber of the MT end of product to be tested 9 one by one through a plurality of test optical fiber jumpers 8, FA placement tool 4 is arranged at the right side of multi-core adapter 3, FA placement tool 4 includes adsorption platform 41 and linear movement mechanism 42, adsorption platform 41 is arranged on linear movement mechanism 42, linear movement mechanism 42 is used for driving adsorption platform 41 to move horizontally and transversely and linearly, the FA end of product to be tested 10 is fixedly connected on adsorption platform 41 through adsorption, 45° mirror surface reflection device 5 is arranged on FA placement tool 4 and is arranged at the light exit side of the FA end of product to be tested 9, the 45° mirror surface of 45° mirror surface reflection device 5 faces the FA end, camera 6 is arranged directly above 45° mirror surface reflection device 5, the lens of camera 6 faces downward, camera 6 is communicatively connected with computer control system 7, computer control system 7 includes display screen 71, first button 72 for controlling polarity tester 1 to be turned on or off and second button 73 for controlling linear movement mechanism 42 to be started or stopped, polarity tester 1 is electrically connected with first button 72, linear movement mechanism 42 is electrically connected with second button 73, and linear movement mechanism 42 is communicatively connected with computer control system 7.

[0026] When the included angle α between the end face of the FA end of product to be tested 9 and the vertical face is less than the critical angle of total reflection (for example Figure 1As shown), the red light refracted from the FA end will illuminate the 45° mirror reflection device 5, and after 45° mirror reflection, it will enter the lens of the camera 6. The camera 6 will send the captured red light information to the computer control system 7.

[0027] When the angle α between the FA end face of the product under test 9 and the vertical plane is greater than or equal to the critical angle for total internal reflection (e.g.) Figure 2 As shown), the red light coming out from the FA end will undergo total internal reflection on the inclined end face of the FA. At this time, the camera 6 position cannot receive the red reflected light. The computer control system 7 does not receive feedback information from the camera 6 and will issue a control command to start the linear movement mechanism 42, which will drive the adsorption platform 41 and the FA end of the product to be tested 9 on the adsorption platform 41 to move forward in a straight line to directly below the camera 6, so that the red light coming out from the FA port will undergo total internal reflection upward through the inclined surface of the port and enter the lens of the camera 6. The camera 6 will send the captured red light information to the computer control system 7.

[0028] Furthermore, it also includes a vacuum generator 10, which is electrically connected to the third button 74 on the computer control system 7. The adsorption platform 41 is provided with an L-shaped negative pressure hole 411. One end of the L-shaped negative pressure hole 411 passes through the upper side of the adsorption platform 41, and the other end passes through the left side of the adsorption platform 41. The bottom surface of the FA end of the product to be tested is sealed and covered above the opening of the L-shaped negative pressure hole 411 on the upper side of the adsorption platform 41. The vacuum generator 10 is sealed and connected to the opening of the L-shaped negative pressure hole 411 on the left side of the adsorption platform 41 through the air pipe 11. The vacuum generator 10 is used to evacuate the L-shaped negative pressure hole 411, thereby adsorbing the FA end onto the adsorption platform 41.

[0029] Furthermore, the test fiber optic patch cord 8 includes a fiber optic patch cord and connectors. The connectors are LC, FC, or SC connectors that mate with the MT end of the product under test (DUT) 9. The LC, FC, or SC connectors are connected to each fiber optic channel of the MT end of the DUT 9.

[0030] Furthermore, it also includes an alarm 12, which can be a buzzer or an audible and visual alarm; in this embodiment, a buzzer is used.

[0031] Furthermore, the linear motion mechanism 42 can be a ball screw linear motion mechanism or a cylinder; in this embodiment, a ball screw linear motion mechanism is used.

[0032] Furthermore, such as Figure 3As shown, the ball screw linear moving mechanism includes a screw rod base 421, a ball screw 422 mounted on the screw rod base 421, a screw nut 423 threadedly connected with the ball screw 422, and a motor 424 driving the ball screw 422 to rotate. The motor 424 drives the ball screw 422 to rotate, so that the screw nut 423 moves linearly along the screw rod axis. The adsorption platform 41 is arranged above the screw nut 423, so that the adsorption platform 41 moves linearly together with the screw nut 423. A downward step 412 is arranged on the right side of the adsorption platform 41, and the 45° mirror reflecting device 5 is mounted on the step 412 and linked with the adsorption platform 41.

[0033] The detection method of the MT-FA fiber sequence automatic detection device of the embodiment includes the following steps:

[0034] 1) Place the FA end of the MT-FA product 9 to be tested on the adsorption platform 41, and place the FA end lower bottom cover above the upper end opening of the L-shaped negative pressure hole 411. Click the third button 74 to start the vacuum generator 10 to adsorb and fix the FA end of the product 9 to be tested.

[0035] 2) Select a test optical fiber jumper 8 with an LC or FC or SC connector that matches the MT end of the product 9 to be tested. The product 9 to be tested has 12 optical fiber channels, and 12 test optical fiber jumpers 8 are used to connect the 12 ports of the multi-core adapter 3 with the 12 optical fiber channels of the MT end of the product 9 to be tested one by one.

[0036] 3) Set the correct abscissa of the red light emitted by each optical fiber channel of the FA of the product 9 to be tested in advance in the computer control system 7 (the abscissa of each optical fiber channel of the FA is consistent): x1, x2…x12.

[0037] 4) Start the polarity tester 1 to emit red light. The red light passes through the test bus 2, the multi-core adapter 3, the test optical fiber jumper 8, and the MT end of the product 9 to be tested in turn, and finally emits from the FA end. When the angle between the end face of the FA end of the product 9 to be tested and the vertical face is < the critical angle of total reflection (such as Figure 1 As shown), the red light output from the FA end is mainly refracted light, which is reflected upward by the 45° mirror reflecting device 5 into the lens of the camera 6, and the camera 6 sends the shooting information to the computer control system 7.

[0038] When the angle between the end face of the FA end of the product 9 to be tested and the vertical face is ≥ the critical angle of total reflection (such as Figure 2As shown in the figure, the red light from the FA end will be totally reflected on the end face of the FA end, and the totally reflected light is vertically upward and will not be reflected on the front 45° mirror reflecting device 5, and the computer control system 7 will not receive the shooting information sent by the camera 6, and will send a control instruction to control the linear moving mechanism 42 to start and drive the adsorption platform 41 and the FA end to move linearly forward to the position right below the camera 6, so that the red light totally reflected upward from the FA end face enters the camera 6 lens, and the camera 6 sends the shooting information to the computer control system 7;

[0039] 5) The computer control system 7 calculates the horizontal coordinates (x1', x2', … x12') of the red light from the FA optical fiber channels according to the received information, and compares the calculated coordinates with the correct coordinates set in step 3 (x1 and x1', x2 and x2', … x12 and x12'), and if the two are consistent, it means that the optical fiber sequence is correct, and if the two are inconsistent, it means that the optical fiber sequence is incorrect, the computer control system 7 will start the alarm 12 to alarm, and the detection result will be displayed on the display screen 71, and the fiber sequence detection result will be electronically archived.

[0040] 6) After the test is completed, the second button 74 is clicked to close the vacuum generator 10, and the product to be tested 9 can be taken off.

[0041] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should be considered as the protection scope of the present application.

Claims

1. A device for automatic detection of MT-FA fiber sequence, characterized in that: The application relates to a polarized light testing device, which comprises a polarized light tester, a testing bus, a multi-core adapter, an FA placing tool, a 45-degree mirror reflection device, a camera and a computer control system, the polarized light tester is used for sending red light to a product to be tested, the polarized light tester is connected with the multi-core adapter through the testing bus, the multi-core adapter is connected with a plurality of optical fibers of an MT end of the product to be tested through a plurality of testing optical fiber jumpers in one-to-one correspondence, the FA placing tool is arranged on the right side of the multi-core adapter, the FA placing tool comprises an adsorption platform and a linear moving mechanism, the adsorption platform is arranged on the linear moving mechanism, the linear moving mechanism is used for driving the adsorption platform to move horizontally and transversely in a straight line, an FA end of the product to be tested is fixedly connected to the adsorption platform through adsorption, the 45-degree mirror reflection device is arranged on the FA placing tool and on the light emission side of the FA end of the product to be tested, the 45-degree mirror of the 45-degree mirror reflection device faces the FA end, the camera is arranged directly above the 45-degree mirror reflection device, the camera lens faces downward, the camera is in communication connection with the computer control system, the computer control system comprises a display screen, a first button for controlling the polarized light tester to be turned on or turned off and a second button for controlling the linear moving mechanism to be started or stopped, the polarized light tester is in electric connection with the first button, the linear moving mechanism is in electric connection with the second button, and the linear moving mechanism is in communication connection with the computer control system. When the included angle between the FA end face of the product to be tested and a vertical plane is smaller than a total reflection critical angle, red light refracted from the FA end face is irradiated on the 45-degree mirror reflection device, is reflected by the 45-degree mirror and enters the camera lens, and the camera sends red light information to the computer control system. When the included angle between the FA end face of the product to be tested and a vertical plane is greater than or equal to the total reflection critical angle, red light emitted from the FA end face is totally reflected upward by the FA end face, at this moment, the camera position cannot receive the red reflected light, the computer control system does not receive feedback information of the camera, and sends a control instruction to start the linear moving mechanism to drive the adsorption platform and the FA end of the product to be tested to move forward in a straight line to the position directly below the camera, so that the red light from the FA port is totally reflected by the port inclined surface and enters the camera lens, and the camera sends red light information to the computer control system.

2. The automatic detection device of MT-FA fiber sequence according to claim 1, characterized in that: The application further comprises a vacuum generator, the vacuum generator is in electric connection with a third button on the computer control system, an L-shaped negative pressure hole is arranged in the adsorption platform, one end of the L-shaped negative pressure hole penetrates through the upper side of the adsorption platform, and the other end penetrates through the left side of the adsorption platform, a FA end lower bottom surface sealing cover of the product to be tested is arranged above the L-shaped negative pressure hole orifice on the upper side of the adsorption platform, the vacuum generator is in sealing connection with the L-shaped negative pressure hole orifice on the left side of the adsorption platform through a gas pipe, and the vacuum generator is used for vacuumizing the L-shaped negative pressure hole, so that the FA end is adsorbed on the adsorption platform.

3. The automatic MT-FA fiber sequence detection device according to claim 1, characterized in that: The testing optical fiber jumper comprises an optical fiber jumper and a connecting head, and the connecting head is an LC or FC or SC connecting head matched with the MT end of the product to be tested.

4. The automatic MT-FA fiber sequence detection device according to claim 1, characterized in that: The application further comprises an alarm, and the alarm adopts a buzzer or an audible and light alarm.

5. The automatic MT-FA fiber sequence detection device according to claim 1, characterized in that: The linear moving mechanism adopts a ball screw linear moving mechanism or an air cylinder.

6. The automatic MT-FA fiber sequence detection device according to claim 5, characterized in that: The ball screw linear movement mechanism comprises a screw rod base, a ball screw rod installed on the screw rod base, a screw rod nut in threaded connection with the ball screw rod, and a motor for driving the ball screw rod to rotate. The adsorption platform is arranged above the screw rod nut, so that the adsorption platform moves linearly together with the screw rod nut.

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