Automatic testing method

Abstract

The invention provides an automatic testing method which comprises the following steps: (1) adjusting the position of a diaphragm snap ring through detection of preset concentricity before power detection, so that the center of emergent light of a to-be-tested pump source module is aligned with the center of the diaphragm snap ring, and the result of power detection is more accurate; (2) before the numerical aperture test of the to-be-tested pump source module is carried out, the actual power value and the test power value of the to-be-tested pump source module can be obtained at the same time by carrying out the power test; and (3) performing a final numerical aperture test on the to-be-tested pump source module by adopting a preset proportion of the original power value of the to-be-tested pump source module, and reflecting the quality of the light beam according to a test result of the numerical aperture. The above three factors all influence the numerical aperture test of the to-be-tested pump source module, and the final test result is more accurate through the superposition of the optimization conditions of the above three factors.

Description

Technical Field

[0001] The present invention relates to the field of semiconductor technology, and in particular to an automatic testing method. Background Art

[0002] With the rapid development of optical fiber communication technology, the performance requirements for optical devices are getting higher and higher. In particular, the performance test of the pump source module directly affects the stability and reliability of the entire system.

[0003] In the prior art, there are deficiencies in the performance test of the pump source module, such as inaccurate test data sources, and improvements are urgently needed to improve the accuracy and efficiency of the test. Summary of the invention

[0004] The purpose of the present invention is to provide an automated testing method that can effectively improve the accuracy and efficiency of the test.

[0005] The present application provides an automated testing method, which is applied to an automated testing device to obtain the numerical aperture of a pump source module to be tested. The automated testing device includes an aperture retaining ring and a power meter. The automated testing method includes: In response to a numerical aperture test request, obtaining a profile of the aperture retaining ring, and obtaining a profile of the aperture retaining ring irradiated by the output light of the pump source module to be tested; Determine whether the contour of the aperture clamp ring and the contour of the aperture clamp ring irradiated by the outgoing light of the pump source module to be tested meet the preset concentricity requirement; If the contour of the aperture clamp ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture clamp ring meet the preset concentricity requirement, power detection is performed and the detection result is determined; If the detection result of the power detection meets the original power value of the pump source module to be tested, the position of the aperture clamp ring in the Y-axis direction is adjusted until the power value detected by the power meter is a preset proportion of the original power value of the pump source module to be tested, the movement is stopped, and the position coordinates of the aperture clamp ring are fed back; The numerical aperture of the pump source module to be tested is determined based on the distance between the position coordinates of the aperture retaining ring and the pump source module to be tested in the Y-axis direction, and the diameter of the aperture retaining ring.

[0006] In one embodiment, judging whether the contour of the aperture retaining ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture retaining ring meet the preset concentricity requirement includes: Performing image extraction and preprocessing on the contour of the aperture retaining ring and the contour of the aperture retaining ring irradiated by the outgoing light of the pump source module to be tested; Acquire a first search circle in the contour of the aperture retaining ring, and acquire a second search circle in the contour of the aperture retaining ring illuminated by the outgoing light of the pump source module to be tested; Obtaining the first center coordinates of the first search circle and the second center coordinates of the second search circle; It is determined whether the first circle center coordinates and the second circle center coordinates coincide with each other, and it is determined whether the roundness value of the first search circle and the roundness value of the second search circle meet a preset determination value.

[0007] In one embodiment, judging whether the contour of the aperture clamp ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture clamp ring meet the preset concentricity requirement includes: if the contour of the aperture clamp ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture clamp ring do not meet the preset concentricity, adjusting the position coordinates of the aperture clamp ring until the contour of the aperture clamp ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture clamp ring meet the preset concentricity, and then performing power detection and determining its detection result.

[0008] In one embodiment, when adjusting the position coordinates of the aperture retaining ring, the method further includes: adjusting the position of the aperture retaining ring in the X-axis, Y-axis and Z-axis directions based on the first circle center coordinates and the second circle center coordinates.

[0009] In one embodiment, the method further comprises: Determine the numerical aperture of the pump source module to be tested, wherein NA is the numerical aperture of the pump source module to be tested, is the refractive index of air, R is the diameter of the aperture clamp ring, and L is the distance between the position coordinates of the aperture clamp ring and the pump source module to be tested in the Y-axis direction.

[0010] In one embodiment, when judging whether the contour of the aperture retaining ring and the exit light of the pump source module to be tested irradiated on the contour of the aperture retaining ring meet a preset concentricity, the method further comprises: in the Y-axis direction, the aperture retaining ring is at any position where the exit light of the pump source module to be tested is intercepted; When performing power detection and determining the detection result, the method also includes: in the Y-axis direction, the aperture clamp is in a full-power position; when the aperture clamp is in the full-power position, the output light of the pump source module to be tested is not intercepted.

[0011] In one embodiment, if the contour of the aperture retaining ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture retaining ring meet the preset concentricity requirement, power detection is performed and the detection result is determined, including: The power meter detects the power value once every first time interval; detects m times, and obtains m power values: P1, P2...Pm, where the current power value is Pi, and m is a positive integer; The current power value Pi is calculated by difference with the previous power value Pi-1 to obtain the power difference value. ; When the preset time period Within the range, the power difference ≤P*A%, then determine the preset time period The average power value within the range of is the actual power value of the pump source module to be tested, where P is the original power value of the pump source module to be tested, and A is a positive integer less than 5.

[0012] In one embodiment, when the power value detected by the power meter is a preset proportion of the original power value of the pump source module to be tested, the method further includes: The power meter detects the power value once every second time interval; detects n times to obtain n power values: P1, P2...Pn, where the current power value is Pj, and n is a positive integer; The current power value Pj is calculated by difference with the previous power value Pj-1 to obtain the power difference value. ; When the preset time period Within the range, the power difference ≤P*preset ratio*B%, then determine the preset time period The average power value within the range of is the actual power value of the pump source module to be tested, where P is the original power value and B is a positive number less than 5.

[0013] In one embodiment, the first time is set to 0.5s-1s, the second time is set to 0.8s-1.2s, and the preset time period ≥5s;2≥A>B.

[0014] In one embodiment, the method further comprises: Detecting a temperature value T of the pump source module to be tested; If the temperature value T>temperature threshold, the pump source module to be tested is controlled to be powered off to achieve emergency stop control; If the fluctuation amplitude of the temperature value exceeds the preset value and the decreasing rate of the actual power value of the pump source module to be tested is not less than the threshold value, the pump source module to be tested is controlled to be powered off to achieve emergency stop control.

[0015] The present invention has at least the following advantages or beneficial effects: 1. The automated testing method provided by the present application: (1) Before the power test, the position of the aperture ring is adjusted by a preset concentricity test so that the center of the emitted light of the pump source module to be tested is aligned with the center of the aperture ring, thereby making the power test result more accurate; (2) Before the numerical aperture test of the pump source module to be tested, a power test is performed first to simultaneously obtain the actual power value and the test power value of the pump source module to be tested; (3) The final numerical aperture test of the pump source module to be tested is performed using a preset ratio of the original power value of the pump source module to be tested, and the quality of the beam is reflected according to the test result of the numerical aperture. The higher the accuracy of the power value test, the higher the accuracy of the numerical aperture test. The above three factors all affect the numerical aperture test of the pump source module to be tested. After the optimization conditions of the above three factors are superimposed, the final test result is more accurate.

[0016] 2. The automated test method provided by the present application uses a specially designed power collection method to read the power reading in a standardized manner, so that the power reading is more reliable, the NA test data is more accurate, and the accuracy of the NA test is improved. Further setting 2≥A>B, that is, the volatility of the collection value of the preset proportion of the original power is lower, is more conducive to ensuring the accuracy and reliability of the collection value of the preset proportion of the original power, the NA test data is more accurate, and the accuracy of the NA test is improved.

[0017] 3. The automated testing method provided by the present application sets an emergency stop control step in the automated testing method. With automatic emergency stop control, when the pump source module to be tested fails, emergency stop control can be achieved through the control of the control module. Compared with manual operation, the operation speed is faster and will not cause the pump source module to be tested to be completely burned out. The pump source modules to be tested that have undergone emergency stop control can be unloaded into a dedicated unloading box for collection, which is convenient for collecting the pump source modules to be tested that are about to burn out, providing data support for subsequent failure analysis, and facilitating subsequent maintenance and improvement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of an automated testing system provided by an embodiment of the present invention; Figure 2 A front view of an automated testing system provided by an embodiment of the present invention; Figure 3A top view of an automated testing system provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a device to be tested provided by an embodiment of the present invention; Figure 5a This is a schematic diagram of the case where the output light of a pump source module to be tested provided in an embodiment of the present application irradiates an aperture retaining ring; Figure 5b This is a schematic diagram of another pump source module to be tested provided in an embodiment of the present application when the emitted light irradiates the aperture retaining ring; Figure 6 A flowchart of the automated testing method provided in an embodiment of the present application; Figure 7 This is a schematic diagram of the structure of the pump source module to be tested, the aperture clamp ring and the power meter provided in the embodiment of the present application; Figure 8a , Figure 8b , Figure 8c They are schematic diagrams of test structures when the aperture clamp provided in the embodiments of the present application is located at three different positions; Fig. 9 This is a schematic diagram of the power test results provided in the embodiments of the present application.

[0020] Description of reference numerals: Automated testing system 100: fixing device 10, platform 10a, first support body 11; rotating device 20; clamping device 30: clamping body 31, clamping power-on assembly 32; device to be tested 40, test chamber 41, pump source module to be tested 42, pump unit 421, optical fiber module 43, optical fiber reel 402; detection device 50: aperture clamp 51, power meter 52, second identification device 53; loading device 60; unloading device 70; first identification device 80. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The automated testing method provided in this application can be applied to Figure 1 , Figure 2 and Figure 3 The automated testing system 100 shown in the figure. The automated testing system 100 includes: a fixing device 10, a rotating device 20, a clamping device 30, a device to be tested 40, a detection device 50 and a control device (not shown). The automated testing system 100 is used to test the performance of the pump source module 42 to be tested in the device to be tested 40. For example: the automated testing system 100 can be used to test the numerical aperture (NA value) of the pump source module 42 to be tested, the divergence angle of the emitted light of the pump source module 42 to be tested, the overall power of the pump source module 42 to be tested, the temperature of the pump source module 42 to be tested and other parameters.

[0028] The fixing device 10 is used to provide a platform for carrying other supporting bodies, and the platform can be set as the ground or other flat surface. The rotating device 20 is rotatably arranged on the fixing device 10. The rotating device 20 can rotate 360 ​​degrees clockwise or counterclockwise, and the speed during the rotation process is controllable, and there is a pause point during the rotation process.

[0029] The clamping device 30 is disposed on the rotating device 20 and is used to clamp or release the device to be tested 40. During the rotation of the rotating device 20, the clamping device 30 can be carried to move to different positions. The clamping device 30 includes a clamping body 31 and a clamping power-on component 32. Figure 4 The device to be tested 40 includes: a test chamber 41, a pump source module to be tested 42 and an optical fiber module 43.

[0030] The test chamber 41 can provide a storage space. The pump source module 42 to be tested is arranged in the test chamber 41, and when the clamping device 30 powers on the pump source module 42 to be tested, a laser is emitted. The optical fiber module 43 includes an optical fiber reel 402 and an optical fiber coiled on the optical fiber reel 402. One end of the optical fiber is connected to the light outlet hole of the pump source module 42 to be tested, and the other end of the optical fiber passes through the side wall of the test chamber 41, and is used to transmit the laser to be tested to the outside. In this embodiment, the test chamber 41 accommodates the pump source module 42 to be tested and the optical fiber module 43. The optical fiber module 43 can be coiled and will not shake during the test process, and will not affect the test results. The flange joint of the optical fiber module 43 is arranged on the outside of the test chamber 41, and the contact position between the optical fiber module 43 and the pump source module 42 to be tested is the optical fiber nozzle. The temperature of the optical fiber nozzle can be monitored.

[0031] The detection device 50 is disposed on the fixing device 10. When the clamping device 30 moves to the testing station, the detection device 50 performs detection on the pump source module 42 to be tested.

[0032] The control device is electrically connected to the rotating device 20, the clamping device 30 and the detection device 50. The control device is configured to control the rotating device 20 to rotate so that the clamping device 30 is in a preset position; the control device is configured to control the clamping device 30 to perform a preset action when the rotating device 20 drives the clamping device 30 to be in different preset positions; the control device is configured to control the detection device 50 to test the performance of the pump source module 42 to be tested.

[0033] The key steps of the performance test of the pump source module 42 to be tested include: the rotating device 20 rotates to make the clamping device 30 in a preset position; when the rotating device 20 drives the clamping device 30 to be in the preset position, the clamping device 30 is controlled to perform a preset action; the detection device 50 tests the performance of the pump source module 42 to be tested. The above key steps can all be automatically controlled by the control device, and the above key steps do not rely on manual operation, which reduces labor costs and can ensure the consistency and accuracy of the measurement results.

[0034] The fixing device 10 includes: a platform 10a and two first supports 11 arranged at intervals. The two first supports 11 arranged at intervals are fixedly arranged on both sides of the platform 10a. The fixing platform 10a can be set as the ground or other flat surfaces. The automated testing system also includes: a feeding device 60 arranged on the platform 10a. The feeding device 60 includes: a feeding crawler, a motion cutoff portion and a proximity switch.

[0035] The feeding crawler is arranged on the platform 10a and can be driven along the X-axis to convey the device to be tested 40. The running speed of the feeding crawler is adjusted by the control device.

[0036] The motion cutoff portion is arranged at the end point of the feeding crawler along the X-axis, and the height of the motion cutoff portion in the Z-axis direction is higher than the height of the feeding crawler in the Z-axis direction. The proximity switch is arranged at the motion cutoff portion, and is used to sense whether the device to be tested 40 is close to the preset feeding position. The feeding crawler drive shaft is arranged below the motion cutoff portion, and is used to drive the feeding crawler to move.

[0037] In one embodiment, the automated testing system 100 further includes a material unloading device 70 disposed on the platform 10a. The material unloading device 70 includes a supporting member and a material unloading crawler.

[0038] The supporting member is rotatably and liftably disposed on the platform 10a, and is used to support the device to be tested 40 that has completed the test. The unloading crawler is disposed on the platform 10a, and can be driven along the X axis, and is used to transport the device to be tested 40 that has completed the test.

[0039] The supporting member is located at the release position. When the clamping device 30 clamps the device to be tested 40 that has completed the test and runs to the release position, the clamping device 30 releases the device to be tested 40 that has completed the test, and the supporting member supports the device to be tested 40 that has completed the test to rotate to the side. At the same time, the clamping device 30 is driven by the rotating device 20 to rotate to the loading position. The supporting member supports the device to be tested 40 that has completed the test to the unloading crawler for unloading. In this embodiment, the supporting member can be raised and lowered and rotated, which is convenient for unloading operations, and does not affect the rotating device 20 driving the clamping device 30 to rotate to the loading position, thereby improving the operating efficiency of the system.

[0040] In one embodiment, the material unloading crawler includes two crawlers spaced apart: a first material unloading crawler and a second material unloading crawler. The interval between the two material unloading crawlers is equal to the width of the supporting surface of the supporting member. The length of the supporting surface of the supporting member is greater than or equal to the width of the test chamber.

[0041] The first unloading crawler and the second unloading crawler are provided to facilitate the support to place the tested device 40 after the test, and to ensure that the tested device 40 after the test will not encounter any accidents (such as collision or overturning) during the unloading process.

[0042] In one embodiment, the automated testing system 100 further includes a first identification device 80. When the clamping device 30 on the rotating device 20 is at a preset position, the control device controls the first identification device 80 to identify parameter information of the device under test 40 and saves it to the control device.

[0043] In the prior art, the performance test of the pump source module usually involves multiple steps, and there is a certain correlation between the steps. Once the test result of one step in the test process is not accurate enough, it will affect the final test result of the pump source module. Figure 5a As shown, the dotted line is a schematic diagram of the output light of the pump source module 42 to be tested irradiating the aperture retaining ring. It can be clearly seen that the outline of the output light is not concentric with the outline of the aperture retaining ring. Figure 5b As shown in the figure, the dotted line is a schematic diagram of the output light of the pump source module 42 to be tested irradiating the aperture ring. It can be clearly seen that the outline of the output light and the outline of the aperture ring are concentrically arranged. When performing power testing or numerical aperture testing, it is necessary to adjust to Figure 5b Only when the status shown is correct can accurate test results be obtained.

[0044] One aspect of the present application provides an automated testing method, which adjusts the position of the aperture retaining ring before performing power detection so that the center of the output light of the pump source module 42 to be tested is aligned with the center of the aperture retaining ring, so that the power detection result is more accurate, which ultimately reflects that the performance test of the pump source module 42 to be tested is more accurate.

[0045] See also Figure 6 , the present application provides an automated testing method that can be applied to Figure 1 , Figure 2 , Figure 3 The automated testing system 100 shown in FIG. 1 includes: Figure 7 The aperture retaining ring 51 and the power meter 52 are shown. The automated testing method comprises: S11, in response to the numerical aperture test request, obtain the contour of the aperture retaining ring, and obtain the contour of the exit light of the pump source module 42 to be tested irradiating the aperture retaining ring. In this step, the second recognition device 53 can be used to obtain the contour of the aperture retaining ring 51, and obtain the contour of the exit light of the pump source module 42 to be tested irradiating the aperture retaining ring 51. The second recognition device 53 can be set as a visual camera with a fisheye function.

[0046] S12, judging whether the contour of the aperture retaining ring and the contour of the output light of the pump source module irradiated on the aperture retaining ring meet the preset concentricity. In this step, when judging whether the preset concentricity is met, not all the output light of the pump source module 42 to be tested is incident on the power meter, and a part of the output light of the pump source module 42 to be tested is blocked by the aperture retaining ring. In this step, when judging whether the preset concentricity is met, the equivalent circle of the contour of the aperture retaining ring and the equivalent circle of the contour of the output light of the pump source module 42 to be tested irradiated on the aperture retaining ring are obtained.

[0047] S13, if the contour of the aperture clamp ring and the contour of the pump source module 42 to be tested irradiated on the aperture clamp ring meet the preset concentricity, then power detection is performed. In this step, when performing power detection, the emitted light of the pump source module 42 to be tested must be incident on the power meter in its entirety, and there is no emitted light blocked by the aperture clamp ring. In this step, there may be multiple conditions for satisfying the preset concentricity, the center of the equivalent circle of the contour of the aperture clamp ring and the equivalent circle of the contour of the pump source module 42 to be tested irradiated on the aperture clamp ring coincide with each other, and / or the equivalent circle of the contour of the aperture clamp ring and the equivalent circle of the contour of the pump source module 42 to be tested irradiated on the aperture clamp ring have the same roundness value or are within a preset range.

[0048] S14, if the power detection result satisfies the original power value of the pump source module 42 to be tested, the position of the aperture retaining ring in the Y-axis direction is adjusted until the power value detected by the power meter is a preset ratio of the original power value of the pump source module 42 to be tested, then the movement is stopped and the position coordinates of the aperture retaining ring are fed back. In this step, the original power is the power when the output light of the pump source module 42 to be tested is not restricted by the aperture retaining ring, that is, the power value corresponding to 100% output light of the pump source module 42 to be tested. The preset ratio in this step can be set to 90%-99%. In one embodiment, the preset ratio can be set to 95%.

[0049] S15, based on the position coordinates of the aperture clamp in S14 and the distance in the Y-axis direction of the pump source module 42 to be tested, as well as the diameter of the aperture clamp, calculate the numerical aperture of the pump source module 42 to be tested. In this step, the diameter of the aperture clamp can be determined when the aperture clamp is selected. The position coordinates of the aperture clamp are the position coordinates adjusted according to the test requirements after the power detection is completed. In this step, the size of the numerical aperture test value reflects the quality of the beam of the pump source module 42 to be tested. If the numerical aperture test value is larger than the standard, the beam quality is poor. The beam of the outgoing light of the pump source module 42 to be tested needs to have high brightness and high concentration (the more concentrated, the smaller the light divergence angle and the smaller the numerical aperture).

[0050] In this embodiment, (1) before the power detection, the position of the aperture retaining ring is adjusted by the preset concentricity detection so that the center of the output light of the pump source module 42 to be tested is aligned with the center of the aperture retaining ring, thereby making the power detection result more accurate; (2) before the numerical aperture test of the pump source module 42 to be tested, the power test can be performed first to simultaneously obtain the actual power value and the test power value of the pump source module 42 to be tested; (3) the final numerical aperture test of the pump source module 42 to be tested is performed using the preset ratio of the original power value of the pump source module 42 to be tested, and the quality of the beam is reflected according to the test result of the numerical aperture. The higher the accuracy of the power value test, the higher the accuracy of the numerical aperture test. The above three factors all affect the numerical aperture test of the pump source module 42 to be tested. After the optimization conditions of the above three factors are superimposed, the final test result is more accurate.

[0051] In one embodiment, S12 further includes: S120, extract and preprocess the contour of the aperture ring and the contour of the exit light of the pump source module 42 to be tested irradiated on the aperture ring. The image extraction and preprocessing in this step can be processed by different algorithms, such as image enhancement, image segmentation, edge detection, image feature extraction, shape feature extraction, feature extraction based on deep learning, and other image preprocessing methods, which will not be described in detail here.

[0052] S121, obtaining a first search circle in the contour of the aperture retaining ring, and obtaining a second search circle in the contour of the aperture retaining ring irradiated by the output light of the pump source module 42 to be tested.

[0053] S122, obtaining the first center coordinates of the first search circle and the second center coordinates of the second search circle.

[0054] S123, determining whether the first circle center coordinates coincide with the second circle center coordinates, and determining whether the roundness value of the first search circle and the roundness value of the second search circle meet a preset determination value.

[0055] In the present embodiment, the conditions for determining whether the contour of the aperture clamp ring and the contour of the aperture clamp ring irradiated by the outgoing light of the pump source module 42 to be tested meet the preset concentricity are refined. It should be noted that the determination conditions may include: whether the coordinates of the center of the circle coincide with each other, and whether the roundness value meets the preset judgment value; other determination conditions may also be included, and the other determination conditions may be set according to the principle of contour similarity determination.

[0056] In one embodiment, S13 also includes: if the contour of the aperture clamp ring and the contour of the output light of the pump source module 42 to be tested irradiated on the aperture clamp ring do not meet the preset concentricity, the position coordinates of the aperture clamp ring are adjusted until the contour of the aperture clamp ring and the contour of the output light of the pump source module 42 to be tested irradiated on the aperture clamp ring meet the preset concentricity, and then power detection is performed.

[0057] In one embodiment, when adjusting the position coordinates of the aperture retaining ring, the first circle center coordinates and the second circle center coordinates are combined to adjust the position of the aperture retaining ring in the X-axis, Y-axis and Z-axis directions.

[0058] In this embodiment, the position coordinates of the aperture clamping ring can be adjusted by setting a position coordinate adjustment device including an X-axis motor, a Y-axis motor, a Z-axis motor and a three-axis controller. Specifically, the Y-axis coordinate can be adjusted first, and then the X-axis coordinate and / or Z-axis coordinate can be adjusted.

[0059] In one embodiment, according to Calculate the numerical aperture of the pump source module 42 to be tested, where NA is the numerical aperture of the pump source module 42 to be tested, is the refractive index of air, R is the diameter of the aperture ring, and L is the distance in the Y-axis direction between the position coordinate of the aperture ring in S14 and the pump source module 42 to be tested. In a specific embodiment, in the above formula, the diameter R of the aperture ring is 32 mm; the distance L between the pump source module 42 to be tested and the aperture ring is 90 mm. The numerical aperture NA of the pump source module 42 to be tested is 0.175 rad.

[0060] In one embodiment, in S12, when judging whether the contour of the aperture clamp ring and the contour of the exit light of the pump source module 42 to be tested irradiated on the aperture clamp ring meet the preset concentricity: in the Y-axis direction, the aperture clamp ring is at any position where the exit light of the pump source module 42 to be tested is intercepted.

[0061] In S13, when power detection is performed: in the Y-axis direction, the aperture clamp is at the full power position; when the aperture clamp is at the full power position, the output light of the pump source module 42 to be tested is just not intercepted.

[0062] Specifically, Figure 8aAs shown, when the control device determines whether the contour of the aperture clamp ring and the contour of the exit light of the pump source module 42 to be tested irradiated on the aperture clamp ring meet the preset concentricity, the aperture clamp ring is at any position where the exit light of the pump source module 42 to be tested is intercepted, for example, y=100mm can be set.

[0063] like Figure 8b As shown, when the power test is performed, the aperture clamp is at a position where the emitted light of the pump source module 42 to be tested is just not intercepted, for example, y=70mm can be set, so that no light is blocked at all.

[0064] like Figure 8c As shown, when calculating the numerical aperture of the pump source module 42 to be tested, the aperture retaining ring is at a position where the outgoing light of the pump source module 42 to be tested is intercepted by 5%, for example, y=85mm can be set, and the outgoing light is blocked by 5%.

[0065] In this embodiment, before performing power detection, it is determined whether the contour of the aperture clamp ring and the contour of the aperture clamp ring irradiated by the outgoing light of the pump source module 42 to be tested meet the preset concentricity, so that the detection result of the power data is more accurate and can reflect the actual performance of the pump source module 42 to be tested.

[0066] In the prior art, when performing a power test on the pump source module 42 to be tested, a power meter 52 is usually used to measure the output power. However, since the power meter 52 uses water circulation for cooling, the presence of water circulation will cause fluctuations in the power measurement results. In the prior art, it is usually necessary to manually monitor the power meter readings, which is not only time-consuming and labor-intensive, but also prone to inaccurate readings, thereby affecting the measurement accuracy of NA (numerical aperture).

[0067] The automated testing method provided in the present application includes the following steps when performing power detection in S13: S20, the power collection unit of the power meter detects the power value once at a first time interval. Detect m times and obtain m power values: P1, P2... ...Pm, where the current power value is Pi, and m is a positive integer. In one embodiment, the first time is set to 0.5s-1s.

[0068] S21, perform a difference calculation on the current power value Pi and the previous power value Pi-1 to obtain a power difference value .

[0069] S22, when in the preset time period Within the range of ≤P*A%, then determine the preset time period The average power value within the range of is the actual power value of the pump source module 42 to be tested, where P is the original power value of the pump source module 42 to be tested, and A is a positive integer less than 5. In one embodiment, the preset time period Set to greater than or equal to 5s.

[0070] In this embodiment, as follows Fig. 9 As shown, during the time periods of t1, t2, t3 and t4, the power difference The time ≤P*2% is relatively short and does not reach the preset time period Therefore, the power readings in these four stages are unstable and cannot be recorded as actual power values. Fig. 9 The length of the T1 time period is greater than the preset time period The average power value within the T1 time period is the actual power value of the pump source module 42 to be tested. In this embodiment, a specially designed power acquisition method is used to normalize the power readings, so that the power readings are more reliable, the NA test data are more accurate, and the accuracy of the NA test is improved.

[0071] In one embodiment, in S14, when the power value detected by the power meter is a preset proportion of the original power value of the pump source module 42 to be tested, the following steps are included: S23, the power collection unit of the power meter detects the power value once at a second time interval. Detect n times to obtain n power values: P1, P2... ...Pn, where the current power value is Pj, and n is a positive integer.

[0072] S21, perform a difference calculation on the current power value Pj and the previous power value Pj-1 to obtain a power difference value .

[0073] S22, when in the preset time period Within the range of ≤P*preset ratio*B%, then determine the preset time period The average power value in the range of is the actual power value of the pump source module 42 to be tested, where P is the original power value and B is a positive number less than 5. In one embodiment, the second time is set to 0.8s-1.2s, 2≥A>B.

[0074] In this embodiment, 95% of the original power can be selected as the power value taken when testing the numerical aperture of the pump source module 42 to be tested, that is, the preset ratio is 95%. The measurement of the numerical aperture corresponding to the 95% original power can well reflect the collection and transmission of most of the effective energy of the pump source module 42 to be tested in actual applications, that is, the beam quality. In this embodiment, 2≥A>B is set, that is, the fluctuation rate of the collected value of 95% of the original power is lower, which is more conducive to ensuring the accuracy and reliability of the collected value of 95% of the original power, and the NA test data is more accurate, thereby improving the accuracy of the NA test.

[0075] In the prior art, the status analysis of the pump source module 42 to be tested mainly relies on manual operation. When the pump source module 42 to be tested fails, a technician needs to manually check and judge. This method is not only slow in operation, but also easily causes the pump source module 42 to be tested to be completely burned out, making it impossible to perform detailed fault analysis, thereby affecting subsequent maintenance and improvement work.

[0076] The automated testing method provided by the present application further includes: S16, detecting the temperature value T of the pump source module 42 to be tested by the temperature monitoring module. Further, the emergency stop control is implemented by the following step S17a or S17b.

[0077] S17a, if the temperature value T>temperature threshold, the control device controls the power off of the pump source module 42 to be tested to achieve emergency stop control. The temperature threshold T in this step can be set to 45℃±5℃, and can be further set to 42℃-48℃, such as 45℃. The specific location of the temperature value can be: fiber nozzle temperature, cover plate temperature of the pump source module 42 to be tested, shell temperature of the pump source module 42 to be tested, etc. The temperature value T can be set to the fiber nozzle temperature, and the contact position between the fiber optic module 43 and the pump source module 42 to be tested is called the fiber nozzle. The fiber nozzle is where the pump source module 42 to be tested is often burned due to excessive fiber output NA. The control device controls the power off of the pump source module 42 to be tested, and can be set to control the clamping power-on component 32 to no longer supply power to the pump unit 421.

[0078] S17b, if the temperature value fluctuates and the rate of decrease of the actual power value of the pump source module 42 to be tested reaches a threshold value, the control device controls the pump source module 42 to be tested to be powered off to achieve emergency stop control. In this step, the threshold of the rate of decrease can be set to 2W / s. In other embodiments, when the actual power value of the pump source module 42 to be tested continues to decrease to 8% or more of the original power, it can also be used as a condition for emergency stop control.

[0079] In this embodiment, an emergency stop control step is set in the automated testing method, and automatic emergency stop control is adopted. When the pump source module 42 to be tested fails, the emergency stop control can be realized through the control of the control module. Compared with manual operation, the operation speed is faster and will not cause the pump source module 42 to be tested to be completely burned out. The pump source module 42 to be tested that has undergone emergency stop control can be unloaded into a dedicated unloading box for collection, which is convenient for collecting the pump source module 42 to be tested that is about to be burned out, providing data support for subsequent failure analysis, and facilitating subsequent maintenance and improvement work.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automated testing method, characterized in that: The method is applied to an automated testing device to obtain the numerical aperture of a pump source module to be tested. The automated testing device includes an aperture retaining ring and a power meter. The automated testing method includes: In response to a numerical aperture test request, obtaining a profile of the aperture retaining ring, and obtaining a profile of the aperture retaining ring irradiated by the output light of the pump source module to be tested; Determine whether the contour of the aperture clamp ring and the contour of the aperture clamp ring irradiated by the outgoing light of the pump source module to be tested meet the preset concentricity requirement; If the contour of the aperture clamp ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture clamp ring meet the preset concentricity requirement, power detection is performed and the detection result is determined; If the detection result of the power detection meets the original power value of the pump source module to be tested, the position of the aperture clamp ring in the Y-axis direction is adjusted until the power value detected by the power meter is a preset proportion of the original power value of the pump source module to be tested, the movement is stopped, and the position coordinates of the aperture clamp ring are fed back; The numerical aperture of the pump source module to be tested is determined based on the distance between the position coordinates of the aperture retaining ring and the pump source module to be tested in the Y-axis direction, and the diameter of the aperture retaining ring.

2. The automated testing method according to claim 1, characterized in that: Determining whether the contour of the aperture retaining ring and the contour of the aperture retaining ring irradiated by the outgoing light of the pump source module to be tested meet the preset concentricity requirement includes: Performing image extraction and preprocessing on the contour of the aperture retaining ring and the contour of the aperture retaining ring irradiated by the outgoing light of the pump source module to be tested; Acquire a first search circle in the contour of the aperture retaining ring, and acquire a second search circle in the contour of the aperture retaining ring illuminated by the outgoing light of the pump source module to be tested; Obtaining the first center coordinates of the first search circle and the second center coordinates of the second search circle; It is determined whether the first circle center coordinates and the second circle center coordinates coincide with each other, and it is determined whether the roundness value of the first search circle and the roundness value of the second search circle meet a preset determination value.

3. The automated testing method according to claim 2, characterized in that: Judging whether the contour of the aperture clamp ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture clamp ring meet the preset concentricity requirement includes: if the contour of the aperture clamp ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture clamp ring do not meet the preset concentricity, adjusting the position coordinates of the aperture clamp ring until the contour of the aperture clamp ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture clamp ring meet the preset concentricity, and then performing power detection and determining its detection result.

4. The automated testing method according to claim 3, characterized in that: When adjusting the position coordinates of the aperture retaining ring, the method further includes: adjusting the position of the aperture retaining ring in the X-axis, Y-axis and Z-axis directions based on the first circle center coordinates and the second circle center coordinates.

5. The automated testing method according to claim 1, characterized in that: The method further comprises: Determine the numerical aperture of the pump source module to be tested, wherein NA is the numerical aperture of the pump source module to be tested, is the refractive index of air, R is the diameter of the aperture clamp ring, and L is the distance between the position coordinates of the aperture clamp ring and the pump source module to be tested in the Y-axis direction.

6. The automated testing method according to claim 1, characterized in that: When judging whether the contour of the aperture retaining ring and the contour of the pump source module to be tested irradiated on the aperture retaining ring meet a preset concentricity, the method further comprises: in the Y-axis direction, the aperture retaining ring is at any position where the exit light of the pump source module to be tested is intercepted; When performing power detection and determining the detection result, the method also includes: in the Y-axis direction, the aperture clamp is in a full-power position; when the aperture clamp is in the full-power position, the output light of the pump source module to be tested is not intercepted.

7. The automated testing method according to claim 1, characterized in that: If the contour of the aperture retaining ring and the contour of the exit light of the pump source module to be tested irradiated on the aperture retaining ring meet the preset concentricity requirement, power detection is performed and the detection result is determined, including: The power meter detects the power value once every first time interval; detects m times, and obtains m power values: P1, P2...Pm, where the current power value is Pi, and m is a positive integer; The current power value Pi is calculated by difference with the previous power value Pi-1 to obtain the power difference value. ; When the preset time period Within the range, the power difference ≤P*A%, then determine the preset time period The average power value within the range of is the actual power value of the pump source module to be tested, where P is the original power value of the pump source module to be tested, and A is a positive integer less than 5.

8. The automated testing method according to claim 7, characterized in that: When the power value detected by the power meter is a preset proportion of the original power value of the pump source module to be tested, the method further includes: The power meter detects the power value once every second time interval; detects n times to obtain n power values: P1, P2...Pn, where the current power value is Pj, and n is a positive integer; The current power value Pj is calculated by difference with the previous power value Pj-1 to obtain the power difference value. ; When the preset time period Within the range, the power difference ≤P*preset ratio*B%, then determine the preset time period The average power value within the range of is the actual power value of the pump source module to be tested, where P is the original power value and B is a positive number less than 5.

9. The automated testing method according to claim 8, characterized in that: The first time is set to 0.5s-1s, the second time is set to 0.8s-1.2s, and the preset time period ≥5s;2≥A>B.

10. The automated testing method according to claim 7, characterized in that: The method further comprises: Detecting a temperature value T of the pump source module to be tested; If the temperature value T>temperature threshold, the pump source module to be tested is controlled to be powered off to achieve emergency stop control; If the fluctuation amplitude of the temperature value exceeds the preset value and the decreasing rate of the actual power value of the pump source module to be tested is not less than the threshold value, the pump source module to be tested is controlled to be powered off to achieve emergency stop control.

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