A communication optical cable testing device

Abstract

The present invention relates to the technical field of optical cable communication, and particularly relates to a communication optical cable testing device, which includes a test bench. A testing module is installed on the test bench. The testing module includes a clamping component and a friction component. The clamping component includes a fixing member and a driven member; the friction component includes a power member, and the power member is connected to a convex rod through a cam; a first sliding groove and a second sliding groove are formed on the test bench. There is a moving block in the first sliding groove. A through groove is formed at one end of the moving block, and the through groove is slidably matched with the convex rod. The moving block is matched with a runner; a support rod is connected in the second sliding groove, and a spring is sleeved on the support rod. The spring is fixedly connected to the driven member; the power member is signal-connected to a controller, an encoder is provided on the moving member, a displacement sensor is provided on the moving block, and a fiber Bragg grating strain sensor is provided on the support rod. The present invention conducts wear resistance tests on optical cable samples and real-time monitors key parameters during the test process to ensure the accuracy and reliability of the test results.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cable communication, and particularly to a communication optical cable testing device. Background Art

[0002] In the communication industry, as the main medium for information transmission, the quality and reliability of optical cables are crucial for the stability and efficiency of the entire communication network. Therefore, strict testing of optical cables is a key link to ensure their quality. Most traditional communication optical cable testing devices rely on manual operation and simple mechanical structures, and there are many deficiencies. In complex environments (such as high cold, high temperature, and strong vibration), the wear resistance of the outer sheath of the optical cable is a key indicator determining its lifespan. The following technical defects generally exist in traditional optical cable wear testing devices:

[0003] Firstly, in terms of clamping the optical cable, traditional devices often rely on manual experience to adjust the clamping force, which easily causes the optical cable to slip off or be damaged by uneven forces during the test, thus affecting the accuracy of the test results and the integrity of the optical cable.

[0004] Secondly, traditional testing devices can usually only conduct tests at room temperature and cannot simulate the influence of extreme environments on the wear resistance of optical cables. However, in actual applications, optical cables may work in various harsh environments, such as high temperature, low temperature, and humidity, and these environmental factors will have a significant impact on the performance of optical cables.

[0005] In addition, traditional testing devices also have deficiencies in monitoring the health status of the runner bearings. As a key component in the testing device, the performance of the runner bearings directly affects the accuracy and stability of the test. However, traditional devices often rely on regular disassembly and inspection or vibration analysis to monitor the bearing status, and this method is not only time-consuming and laborious but also unable to monitor the tiny changes of the bearings in real time.

[0006] In summary, existing communication optical cable testing devices have deficiencies in aspects such as clamping force adjustment, environmental adaptability, and bearing health status monitoring. Therefore, there is an urgent need for an optical cable wear testing device integrating high-precision clamping control, multi-environment simulation, and real-time health diagnosis to improve the test efficiency, accuracy, and safety. Summary of the Invention

[0007] To solve the above problems, the present invention provides a communication optical cable testing device, which is used to test the wear resistance of an optical cable sample by simulating the friction environment that the optical cable may encounter during actual use, and to monitor the key parameters during the test in real time to ensure the accuracy and reliability of the test results.

[0008] To achieve the above object, the technical solution of the present invention is as follows: A communication optical cable testing device includes a test bench, on which a test module for testing the abrasion resistance of the optical cable is installed. The test module includes a clamping component and a friction component for fixing the optical cable sample. The clamping component includes a fixing member and a driven member;

[0009] The friction component includes a power member fixedly connected to the test bench. A cam is fixedly connected to the output end of the power member. A convex rod is fixedly connected to the side of the cam away from the power member. A first chute and a second chute are formed on the test bench. A moving block is slidably fitted in the first chute. A through groove is formed at one end of the moving block, and the through groove is slidably fitted with the convex rod. A runner is rotatably fitted on the side of the moving block away from the first chute. A groove matching the optical cable sample is provided on the side wall of the runner;

[0010] A support rod is fixedly connected in the second chute. A spring is sleeved on the support rod. One end of the spring is slidably fitted with the second chute, and the other end of the spring is fixedly connected to the driven member. The driven member is slidably fitted with the second chute. The fixing member is fixedly connected to the test bench and is located on the side of the first chute away from the second chute;

[0011] The power member is signal-connected to a controller. An encoder is installed on the output shaft of the power member. A displacement sensor is installed on the moving block. A fiber Bragg grating strain sensor for real-time monitoring of the effective number of turns of the spring is installed on the support rod. The encoder, the displacement sensor, and the fiber Bragg grating strain sensor are all signal-connected to the controller;

[0012] When the displacement sensor detects that the displacement of the moving block exceeds the preset displacement threshold in the controller, that is, when it reaches the limit position, the controller triggers a reverse command to reverse the movement direction of the power member;

[0013] When the fiber Bragg grating strain sensor detects that the linear relationship between the compression deformation of the spring on the support rod and the tension of the optical cable sample deviates, the controller starts a self-check mode and generates an elastic failure warning signal;

[0014] When the controller receives a deviation between the rotation speed of the cam monitored in real time by the encoder and the preset rotation speed threshold in the controller, the controller starts a self-calibration program to adjust the torque output of the power member.

[0015] Further, both the fixing member and the driven member include fixing blocks. Fixing holes are provided on the fixing blocks. Insertion holes penetrating the fixing blocks are formed in the fixing holes. Screws are threadedly fitted in the insertion holes. An array of V-shaped grooves distributed in a staggered manner is provided on the inner side wall of the fixing holes. Elastic rubber layers are embedded on the inner walls of the V-shaped grooves. A number of pressure sensors are installed on the inner side wall of the fixing holes. All the pressure sensors are integrated into a pressure sensor array. The pressure sensors are signal-connected to the controller;

[0016] When the real-time pressure difference on both sides in the fixed hole detected by the pressure sensor exceeds 15%, the controller triggers an early warning signal to notify to change the screwing depth of the screw so as to adjust the clamping force;

[0017] When the real-time monitoring value of the pressure sensor exceeds the preset pressure threshold in the controller, the controller triggers an early warning signal to notify to change the screwing depth of the screw so as to adjust the clamping force, and at the same time records it as an abnormal clamping event.

[0018] Furthermore, a temperature control module is installed on the top of the test bench. The temperature control module includes a mounting rack, a semiconductor refrigeration sheet and a plurality of infrared heating lamps. The infrared heating lamps and the semiconductor refrigeration sheet are both installed on the mounting rack. The mounting racks are evenly arranged along the traveling path of the friction assembly. The mounting rack is fixedly connected to the test bench. A temperature sensor is embedded in the mounting rack. The temperature sensor, the semiconductor refrigeration sheet and the infrared heating lamps are all signal-connected to the controller;

[0019] When the real-time monitoring value of the temperature sensor exceeds the preset temperature threshold in the controller, a temperature control program is started, and the controller adjusts the power of the infrared heating lamps and the semiconductor refrigeration sheet.

[0020] Furthermore, an early warning module is also installed on the test bench. The early warning module includes a buzzer and an indicator light. The buzzer and the indicator light are both signal-connected to the controller. When the controller receives an early warning signal, the early warning module emits different sound and light alarm signals to remind the operator and take corresponding measures.

[0021] Furthermore, an interaction module is also provided on the test bench. The interaction module includes a camera, a display screen and an input device. The camera is installed on the mounting rack. The display screen is used to display the real-time data and test results during the test. The input device is used for the operator to input test parameters and instructions. The camera, the display screen and the input device are all signal-connected to the controller.

[0022] Furthermore, the surface of the convex rod is coated with a piezoelectric ceramic layer and is signal-connected to the controller. The controller receives in real time the value after Fourier transform of the piezoelectric signal. When the proportion of the energy of the frequency above 2 kHz in the harmonic components of the value exceeds the limit, it is determined that the runner bearing is worn, and thus the controller triggers a shutdown maintenance instruction.

[0023] Furthermore, a safety protection module is also provided on the test bench. The safety protection module includes a protective fence installed around the test bench and an emergency stop button. The emergency stop button is signal-connected to the controller. When an emergency occurs, the test is stopped by pressing the emergency stop button.

[0024] Furthermore, a protective cover for preventing debris from splashing during the test is detachably connected to the test bench. The protective cover covers above the friction assembly and the clamping assembly. A transparent observation window for observing the state of the optical cable sample during the test is provided on the protective cover.

[0025] Furthermore, it also includes a data recording and analysis module, which consists of a data storage unit and a data analysis unit. The data storage unit is used to store all the data collected by the encoder, displacement sensor, fiber Bragg grating strain sensor, pressure sensor and temperature sensor during the test, as well as the operation records and warning information of the controller. The data analysis unit is responsible for processing and analyzing the data stored in the data storage unit to generate a test report. At the same time, the data analysis unit is also used to predict the lifespan and failure types of the optical cable samples based on historical data.

[0026] Furthermore, it also includes a remote communication module for remote monitoring and management. The remote communication module is signal-connected to the controller and transmits the test data, test results and maintenance record information to a remote server or a mobile device through a wireless network.

[0027] The above solution has the following beneficial effects:

[0028] 1. Compared with the prior art which relies on manual experience to adjust the clamping force and is prone to cause the optical cable to slip or be damaged, this solution designs a V-groove array and an elastic rubber layer inside the fixing hole, and combines a pressure sensor array to monitor the clamping force distribution in real time (such as triggering a warning when the left-right pressure difference > 15%). It can accurately adjust the screwing depth of the screw to ensure that the optical cable is evenly stressed and there is no local overload. The pressure sensor is linked with the controller to effectively avoid test errors or sample damage caused by unbalanced clamping force, and significantly improve the test repeatability and reliability.

[0029] 2. Compared with the prior art which can only test at room temperature and cannot simulate the influence of extreme environments on the abrasion resistance of optical cables, this solution adopts a combined temperature control module of a semiconductor refrigeration chip and an infrared heating lamp, and cooperates with a temperature sensor for real-time feedback to dynamically adjust the test environment temperature in the range of -20°C to 80°C (temperature control accuracy ±0.1°C). For example, verifying the embrittlement characteristics of the optical cable sheath at low temperature, or testing the change of friction coefficient caused by material softening at high temperature, comprehensively simulating the real application scenario and filling the environmental adaptability defect of traditional test equipment.

[0030] 3. Compared with the prior art which relies on regular disassembly and inspection or vibration analysis and cannot monitor the health status of the runner bearing in real time, this solution wraps a piezoelectric ceramic layer on the surface of the convex rod and combines Fourier transform to analyze the proportion of high-frequency harmonic energy (such as determining wear when the energy above 2kHz exceeds 15%) to realize early warning of bearing faults. For example, when a micro-crack appears in the bearing raceway, the high-frequency component of the friction vibration will increase significantly, and the controller immediately triggers a shutdown command and records the fault code to avoid test interruption or equipment damage caused by bearing failure and reduce the maintenance cost.

[0031] 4. Compared with the deficiencies in the prior art, such as single protective measures and lack of emergency response mechanism, this solution integrates multiple safety protection modules:

[0032] Physical protection: The detachable acrylic protective cover prevents debris from splashing, and the transparent observation window supports real-time visual inspection.

[0033] Emergency shutdown: The emergency shutdown button directly cuts off the main circuit to ensure the safety of operators.

[0034] Acoustic and optical warning: The buzzer and indicator light are combined for alarm to distinguish different fault types such as over-temperature and clamping imbalance.

[0035] At the same time, the interaction module provides visual data (such as pressure heat maps and displacement curves), simplifies parameter settings and status monitoring, and reduces the operation threshold.

[0036] 5. Compared with the deficiencies in the prior art, such as only recording basic test data and lack of in-depth analysis ability, this solution realizes through the data recording and analysis module:

[0037] Life prediction: Calculate the remaining life based on the wear amount-time curve (such as 0.1mm per thousand times).

[0038] Fault tracing: Combine the spring stiffness attenuation (fiber Bragg grating Δλ monitoring) and the bearing harmonic energy correlation analysis to locate the root cause of failure.

[0039] 6. Compared with the deficiencies in the prior art, such as unstable test conditions caused by motor speed fluctuations, this solution uses an encoder to real-time feedback the cam speed, combines with dynamic adjustment of the motor torque output (such as when the overshoot at 1200rpm, the current increases from 2A to 3A), to ensure a constant friction frequency. At the same time, the fiber Bragg grating strain sensor monitors the spring compression amount. If a non-linear deformation (such as elastic failure) is detected, the controller automatically reduces the load and generates a warning to avoid test failure caused by mechanical component fatigue. The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Brief Description of the Drawings

[0040] Figure 1 Is the axonometric view of the test bench in the embodiment of the communication optical cable testing device of the present invention;

[0041] Figure 2 Is the operation schematic diagram of the embodiment of the communication optical cable testing device of the present invention;

[0042] Figure 3 Is the overall axonometric view of the embodiment of the communication optical cable testing device of the present invention;

[0043] Figure 4 Is the framework diagram of the embodiment of the communication optical cable testing device of the present invention.

[0044] The reference numerals in the accompanying drawings of the specification include: 1, test bench; 101, first sliding groove; 102, second sliding groove; 2, fixing block; 3, screw; 4, cam; 5, convex rod; 6, moving block; 601, through groove; 7, runner; 8, support rod; 9, spring; 10, mounting bracket; 11, display screen; 12, input device; 13, optical cable sample. Detailed implementation manners

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mount", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0048] The following is a further detailed description through specific implementation manners:

[0049] Embodiment 1:

[0050] As shown in the appendix Figure 1 , Figure 2 and Figure 4As shown: A communication optical cable testing device includes a test bench 1. A test module for testing the abrasion resistance of the optical cable is installed on the test bench 1. The test module includes a clamping component and a friction component for fixing the optical cable sample 13. The clamping component includes a fixing part and a driven part. Both the fixing part and the driven part include a fixing block 2. A fixing hole is provided on the fixing block 2. A jack penetrating the fixing block 2 is provided in the fixing hole. A screw 3 is in threaded fit in the jack. An array of V-shaped grooves is provided on the inner side wall of the fixing hole in a staggered manner. An elastic rubber layer is embedded in the inner wall of the V-shaped groove, and a number of pressure sensors are installed on the inner side wall of the fixing hole. All pressure sensors are integrated into a pressure sensor array. In this embodiment, the pressure sensor can be a piezoelectric or a resistive strain type pressure sensor. Preferably, a PCB Piezotronics model 102B06 (range 0 - 100N, frequency response > 5kHz) is used. The array layout can monitor the clamping force distribution at multiple points. When the optical cable is clamped, the elastic rubber layer in the V-shaped groove is compressed and deformed, and the pressure sensor converts mechanical stress into an electrical signal.

[0051] The friction component includes a power component (in this embodiment, the power component is a motor, and a Panasonic MINAS A6 series AC servo motor (400W, model MHMF092L1V2M) is selected). The power component is fixedly connected to the test bench 1. The output end of the power component is fixedly connected to a cam 4. A convex rod 5 is fixedly connected to the side of the cam 4 away from the power component. A first sliding groove 101 and a second sliding groove 102 are provided on the test bench 1. A moving block 6 is slidably fitted in the first sliding groove 101. A through groove 601 is provided at one end of the moving block 6. The through groove 601 is slidably fitted with the convex rod 5. A runner 7 is rotatably fitted on the side of the moving block 6 away from the first sliding groove 101. A groove matching the optical cable sample 13 is provided on the side wall of the runner 7.

[0052] A support rod 8 is fixedly connected in the second sliding groove 102. A spring 9 is sleeved on the support rod 8. One end of the spring 9 is in sliding fit with the second sliding groove 102, and the other end of the spring 9 is fixedly connected to the follower. The follower is in sliding fit with the second sliding groove 102. The fixing member is fixedly connected to the test bench 1 and is located on the side of the first sliding groove 101 away from the second sliding groove 102. The power member is signal-connected to the controller. An encoder is installed on the output shaft of the power member (in this embodiment, the encoder is an incremental photoelectric encoder. In this embodiment, Omron E6B2-CWZ6C (resolution 2000P / R, output NPN open collector) is selected. By cooperating the grating disc with the photoelectric sensor, the motor speed is converted into a pulse signal, and the controller calculates the actual speed according to the pulse frequency). A displacement sensor is installed on the moving block 6 (in this embodiment, the displacement sensor adopts a linear variable differential transformer (LVDT) or a magnetic grating ruler. In this embodiment, TE Connectivity model HR-050 (measurement range ±25 mm, linearity ±0.25%) is selected. By detecting the linear displacement of the moving block 6, an analog voltage or a digital signal is output). A fiber grating strain sensor for real-time monitoring of the effective number of turns of the spring 9 is installed on the support rod 8 (in this embodiment, the principle of the fiber grating strain sensor is that the Bragg wavelength of the fiber grating changes with the strain of the spring 9. By demodulating the wavelength shift amount by a demodulator, the compression amount and the effective number of turns of the spring 9 are converted. In this embodiment, Micron Optics model OSA-320 (wavelength demodulation range 1520 - 1570 nm, strain resolution 1 με) is selected). The pressure sensor, the encoder, the displacement sensor, and the fiber grating strain sensor are all signal-connected to the controller.

[0053] When the displacement sensor detects that the displacement of the moving block 6 exceeds the preset displacement threshold in the controller, that is, when the limit position is reached, the controller triggers a reverse command to reverse the movement direction of the power member; when the fiber grating strain sensor detects that the linear relationship between the compression deformation of the spring 9 on the support rod 8 and the tension of the optical cable sample 13 deviates, the controller starts the self-check mode and generates an elastic failure warning signal; when the controller receives a deviation between the rotation speed of the cam 4 monitored in real time by the encoder and the preset rotation speed threshold in the controller, the controller starts the self-calibration program to adjust the torque output of the power member.

[0054] When the pressure sensor detects that the real-time pressure difference between both sides in the fixing hole exceeds 15%, the controller triggers a warning signal to notify the corresponding personnel to change the screwing depth of the screw 3 so as to adjust the clamping force; when the real-time monitoring value of the pressure sensor exceeds the preset pressure threshold in the controller, the controller triggers a warning signal to notify the corresponding personnel to change the screwing depth of the screw 3 so as to adjust the clamping force, and at the same time records it as an abnormal clamping event.

[0055] An interaction module is also provided on the test bench 1. The interaction module includes a camera, a display screen 11 (in this embodiment, an industrial touch screen is selected, such as the Weilin MT8071iE, 7 inches, 800×480), and an input device 12 (physical buttons / knobs, such as the APEM model IP67 sealed encoder). The camera is installed on the mounting bracket 10. The display screen 11 is used to display real-time data and test results during the test. The input device 12 is used for the operator to input test parameters and instructions. The camera, the display screen 11, and the input device 12 are all signal-connected to the controller.

[0056] The specific implementation process is as follows: When it is necessary to test the abrasion resistance of the optical cable sample 13, start the controller and select the test mode (such as cyclic test, ultimate load test) through the display screen 11 of the interaction module. Input test parameters through the input device 12: preset rotation speed, displacement threshold (such as ±100 mm), and pressure threshold (such as the upper limit of single-point pressure 80 N). Perform sensor calibration, zero the pressure sensor under no-load conditions, and calibrate the initial wavelength of the fiber grating: record the reference value of λ_B (such as 1550 nm) when the spring 9 is not compressed.

[0057] The calculation process of the fiber grating Bragg wavelength is: λ_B = 2nΛ;

[0058] Where n is the effective refractive index and Λ is the effective grating period. The strain of the spring 9 causes the fiber grating to stretch / compress, and the offset Δλ of λ_B is proportional to the strain ε (Δλ / λ≈0.78ε).

[0059] Insert the two ends of the optical cable sample 13 to be tested into the fixing holes of the fixing part and the driven part respectively, and ensure that the V-groove matches the outer sheath of the optical cable sample 13. Then tighten the screw 3 in the jack, and observe the thermal image of the pressure sensor through the display screen 11 until the left-right pressure difference <5%, that is, until the real-time monitoring data of the pressure sensor on the display screen 11 shows a symmetric distribution (such as 58 N on the left and 62 N on the right), so as to fix the optical cable sample 13 to be tested. Then embed the optical cable sample 13 to be tested into the groove of the runner 7, and manually pull the optical cable sample 13 to confirm no sliding.

[0060] Send an instruction to the controller through the input device 12. The controller starts the motor, and the motor runs at a constant speed of 800 rpm. The output shaft of the motor drives the cam 4 to rotate. The cam 4 drives the convex rod 5. A through groove 601 is sleeved on the convex rod 5, which converts the rotational motion of the convex rod 5 into a linear motion, so that the moving block 6 slides in the first chute 101. When the moving block 6 slides, it drives the runner 7, and the runner 7 applies a periodic friction test to the optical cable. The data of the pressure sensor and the displacement sensor are jointly analyzed to distinguish "normal wear" from "abnormal friction caused by clamping looseness".

[0061] During the friction test, the optical cable sample 13 drives the follower to move in the second chute 102. When the follower moves, it squeezes the spring 9 in the second chute 102. When the fiber grating detects a decrease in the stiffness of the spring 9, the controller synchronously reduces the motor torque to avoid overload.

[0062] The process details of the test execution and dynamic control are as follows:

[0063] Phase 1 (uniform friction):

[0064] The controller displays in real time: the displacement curve (monitoring the reciprocating amplitude of the moving block 6), the displacement sensor outputs a displacement of ±100 mm, and when the threshold is exceeded, a reverse command is triggered; the pressure distribution heat map (ensuring uniform clamping force), when the standard deviation of the pressure array > 10 N, a prompt is given to adjust the depth of the screw 3; the relationship diagram of the tension - compression amount of the spring 9 (verifying linearity), verifying the tension consistency through the compression amount of the spring 9 (for example, when the compression amount ΔL = 2 mm, the corresponding tension F = kΔL = 50 N, k = 25 N / mm).

[0065] The pressure, displacement, and the compression amount of the spring 9 are recorded every 10 ms to generate a CSV - format log.

[0066] Phase 2 (load mutation test):

[0067] Manually increase the rotational speed from 800 rpm to 1200 rpm through the input device 12 and observe: the rotational speed following performance feedback by the encoder, that is, the rotational speed rise time of the encoder feedback (such as < 200 ms); whether the controller triggers torque compensation (such as the current increases from 2 A to 2.5 A (torque compensation takes effect)); the fiber grating monitors that ΔL = 0.2 nm corresponds to a spring 9 strain of 0.025%, and if the non - linearity > 5%, an alarm is given.

[0068] Phase 3 (fault simulation):

[0069] Manually loosen one side of the screw 3, and the pressure sensor array detects a sudden drop in unilateral pressure (such as the left / right pressure ratio > 1.5, that is, 30 N on the left and 60 N on the right). The controller immediately pauses the test and pops up an alarm of "clamping force imbalance". Manually block the movement of the moving block 6, detect that the motor current exceeds the limit (such as > 5 A), and the controller cuts off the power supply and records the fault code.

[0070] When the friction test reaches the preset number of cycles (such as 5000 times); the optical cable shows sheath damage (detected by camera assistance, the gray - scale change detected by machine vision > 20%); the permanent deformation of the spring 9 exceeds the limit (the fiber grating detects Δλ irreversible > 0.5 nm); the sensor triggers the safety threshold (such as the permanent deformation of the spring 9 exceeds 5%).

[0071] Data output in the final display screen 11: Generate a wear amount - time curve (calculated by integrating the displacement sensor data); Export the abnormal event log (such as "Pressure exceeded at 2023-10-01 14:23:05"); Evaluate the abrasion resistance level of the optical cable (according to the industry standard GB / T 7424.2).

[0072] Embodiment 2:

[0073] As shown in the attached Figure 3 figure, the difference from Embodiment 1 is that a temperature control module is installed on the top of the test bench 1. The temperature control module includes a mounting bracket 10, a thermoelectric cooler (TEC1-12706 is selected in this embodiment (maximum refrigeration power 60W, temperature difference ΔT max = 68°C)), and several infrared heating lamps (Philips PAR38 infrared lamps are selected in this embodiment (power 150W, wavelength 2 - 5μm)). The infrared heating lamps and the thermoelectric cooler are both installed on the mounting bracket 10. The mounting bracket 10 is evenly arranged along the traveling path of the friction assembly. The mounting bracket 10 is fixedly connected to the test bench 1, and a temperature sensor is embedded on the mounting bracket 10 (OMEGA F2021 is selected in this embodiment, measuring range -50 to 150°C, accuracy ±0.1°C).

[0074] The temperature sensor, the thermoelectric cooler, and the infrared heating lamps are all signal-connected to the controller. When the real-time monitoring value of the temperature sensor exceeds the preset temperature threshold in the controller, the temperature control program is started, and the controller adjusts the power of the infrared heating lamps and the thermoelectric cooler.

[0075] An early warning module is also installed on the test bench 1. The early warning module includes a buzzer (TDKPS1240P02BT is selected in this embodiment) and an indicator light (red, green, and yellow three-color LEDs are selected in this embodiment, model Broadcom ASMT-MW00). The buzzer and the indicator light are both signal-connected to the controller. When the controller receives an early warning signal, the early warning module emits different sound and light alarm signals to remind the operator and take corresponding measures.

[0076] The specific implementation process is as follows: Set the test temperature range (such as -20°C to 80°C), the temperature rise rate (such as 5°C / min), and the over-temperature threshold (such as ±3°C) through the interaction module. Start the test and conduct the abrasion resistance test of the optical cable according to the steps of Embodiment 1. During the test, the controller continuously monitors the ambient temperature and adjusts the working state of the temperature control module as needed.

[0077] Low-temperature test: Start the thermoelectric cooler to cool the test area to -20°C. The controller monitors the data of the temperature sensor. If the actual temperature is lower than the set value, reduce the refrigeration power (such as from 100% to 70%).

[0078] High-temperature test: Turn on the infrared heating lamp and heat up to 80°C. If the temperature exceeds the threshold, turn off the heating lamp and start the thermoelectric cooler to balance the temperature.

[0079] The controller adjusts the power of the thermoelectric cooler and the heating lamp according to the feedback from the temperature sensor: If the measured temperature is lower than the target value, turn on the infrared heating lamp (power ratio 60%) + turn off the thermoelectric cooler. If it exceeds the upper threshold, turn on the thermoelectric cooler (voltage adjusted to 10V) + reduce the power of the heating lamp to 20%.

[0080] When the temperature continuously deviates from the preset value for more than 3 minutes (e.g., actual 45°C, target 40°C), trigger a three-level warning: yellow light flashing (warning) → red light on constantly + buzzer sounding for 1s each time (seriously exceeding the limit) → automatic shutdown (extremely abnormal). After the operator confirms the alarm through the input device 12, resume the test or enter the safety mode. After the test is completed, record and analyze the test data to evaluate the abrasion resistance of the optical cable. Check the working records of the temperature control module to ensure its effective role during the test.

[0081] Stage 1 (constant temperature abrasion test):

[0082] Conduct a friction test 500 times at -20°C and monitor the embrittlement of the optical cable sheath (detect surface cracks through a camera).

[0083] Stage 2 (temperature cycle test):

[0084] The temperature cyclically changes between -20°C and 80°C at a rate of 5°C / min. Stop and check the stiffness of spring 9 every 100 cycles (detect whether the change in Δλ of the fiber grating is reversible through fiber grating detection).

[0085] Example 3:

[0086] The difference from Example 2 is that the surface of the convex rod 5 is coated with a piezoelectric ceramic layer (using a PZT-5H piezoelectric sheet, model: STEMiNC SMQA-5H40-2525), and it is signal-connected to the controller. The controller receives the value of the piezoelectric signal after Fourier transform in real time. When the energy ratio of the frequency components above 2 kHz in the harmonic components of the value exceeds the limit, it is determined that the bearing of the runner 7 is worn, and thus the controller triggers a shutdown and maintenance instruction.

[0087] The specific implementation process is as follows: On the basis of Example 2, add the installation and debugging of the piezoelectric ceramic layer on the surface of the convex rod 5. Ensure that the piezoelectric ceramic layer can normally receive and convert mechanical stress into an electrical signal. Prepare the optical cable sample 13 according to the steps of Example 1 and clamp it. Set the monitoring parameters of the piezoelectric signal through the controller, such as setting the ratio threshold of the energy of the frequency components above 2 kHz in the harmonic components.

[0088] Start the test and conduct the abrasion resistance test of the optical cable according to the steps of Embodiment 1. During the test, the controller receives and processes the piezoelectric signal in real time, performs Fourier transform analysis, and monitors the energy proportion of the harmonic components. When the energy proportion of the frequency above 2 kHz in the harmonic components exceeds the preset threshold, the controller determines that the bearing of the runner 7 is worn and triggers a shutdown maintenance instruction. The operator checks the status of the bearing of the runner 7 according to the shutdown instruction and performs necessary maintenance and replacement.

[0089] After the test, record and analyze the test data to evaluate the abrasion resistance of the optical cable. Check the monitoring record of the piezoelectric signal to ensure its effective role in fault determination.

[0090] Embodiment 4:

[0091] The difference from Embodiment 3 is that a safety protection module is further provided on the test bench 1. The safety protection module includes a guardrail installed around the test bench 1 and an emergency stop button. The emergency stop button is signal-connected to the controller. When an emergency occurs, the test is stopped by pressing the emergency stop button.

[0092] A protective cover for preventing debris from splashing during the test is detachably connected to the test bench 1. The protective cover covers above the friction assembly and the clamping assembly. A transparent observation window for observing the state of the optical cable sample 13 during the test is provided on the protective cover.

[0093] The specific implementation process is as follows: Before the test starts, check whether the guardrail is firmly installed, whether the emergency stop button is sensitive and reliable, and whether the protective cover covers completely. Prepare the optical cable sample 13 and clamp it according to the steps of Embodiment 1.

[0094] Start the test and conduct the abrasion resistance test of the optical cable according to the steps of Embodiment 1. During the test, the operator should always pay attention to the safety protection situation around the test bench 1 to ensure the safe progress of the test. Intentionally cause the sheath to break during the abrasion test, and the protective cover effectively blocks more than 95% of the splashing particles.

[0095] When an emergency occurs, the operator should immediately press the emergency stop button to stop the test and check the safety status of the test bench 1 and the surrounding equipment.

[0096] After the test, turn off the test equipment and disconnect the power supply. Clean the debris and residues on the test bench 1 and the surrounding equipment to keep the equipment clean and tidy.

[0097] Embodiment 5:

[0098] The difference from Embodiment 4 is that it further includes a data recording and analysis module, which includes a data storage unit (in this embodiment, an industrial-grade SSD, model: Kingston DC500M, capacity 1TB) and a data analysis unit. The data storage unit is used to store all the data collected by the encoder, displacement sensor, fiber Bragg grating strain sensor, pressure sensor and temperature sensor during the test, as well as the operation records and warning information of the controller. The data analysis unit is responsible for processing and analyzing the data stored in the data storage unit to generate a test report. At the same time, the data analysis unit is also used to predict the life of the optical cable sample 13 based on historical data (training historical data based on the LSTM model to predict the remaining life of the optical cable (output such as "the wear amount exceeds the limit after 500 remaining cycles")) and the type of failure (combining piezoelectric signals and temperature data, and using the AI algorithm to distinguish between "bearing wear" and "low-temperature lubrication failure" (push the diagnostic result when the confidence level > 90%)).

[0099] It further includes a remote communication module for remote monitoring and management. The remote communication module is signal-connected to the controller, and transmits the test data, test results and maintenance record information to a remote server or a mobile device through a wireless network.

[0100] The specific implementation process is as follows: Set the test parameters through the interaction module and start the data storage function of the data recording and analysis module. During the test, the data storage unit records in real time the data of the encoder, displacement sensor, fiber Bragg grating strain sensor, pressure sensor and temperature sensor, as well as the operation records and warning information of the controller.

[0101] Start the remote communication module and transmit the test data, test results and maintenance record information to a remote server or a mobile device through a wireless network. Remote management personnel can view the test data and analysis results in real time and perform remote control and guidance as needed.

[0102] After the test is completed, the data analysis unit processes and analyzes the stored data to generate a test report. The test report includes information such as the wear resistance performance evaluation, failure prediction and life prediction of the optical cable. Perform necessary maintenance and servicing on the test equipment according to the maintenance records and information in the test report. Regularly check the working status of the data recording and analysis module and the remote communication module to ensure that they can work properly and provide effective data support.

[0103] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A communication optical cable testing device, comprising a test bench (1), on which is mounted a test module for testing the wear resistance of the optical cable, characterized in that: The test module comprises a clamping assembly and a friction assembly for fixing the optical cable sample (13), wherein the clamping assembly comprises a fixing member and a driven member; The fixing member and the driven member both comprise a fixing block (2), the fixing block (2) being provided with a fixing hole, the fixing hole being provided with a plug hole penetrating the fixing block (2), the plug hole being threaded with a screw (3), the inner side wall of the fixing hole being provided with an array of staggered V-shaped grooves, the inner wall of the V-shaped groove being embedded with an elastic rubber layer, and a plurality of pressure sensors being installed on the inner side wall of the fixing hole, all of the pressure sensors being integrated into a pressure sensor array; The friction assembly comprises a power member, which is fixedly connected to a test bench (1), wherein an output end of the power member is fixedly connected to a cam (4), and a convex rod (5) is fixedly connected to the side of the cam (4) away from the power member; a first slide groove (101) and a second slide groove (102) are provided on the test bench (1), a moving block (6) is slidably matched in the first slide groove (101), a through groove (601) is provided at one end of the moving block (6), the through groove (601) is slidably matched with the convex rod (5), a rotating wheel (7) is rotatably matched to the side of the moving block (6) away from the first slide groove (101), and a groove matching the optical cable sample (13) is provided on the side wall of the rotating wheel (7); A support rod (8) is fixedly connected in the second slide groove (102), a spring (9) is sleeved on the support rod (8), one end of the spring (9) is slidably matched with the second slide groove (102), the other end of the spring (9) is fixedly connected to the follower, the follower is slidably matched with the second slide groove (102), and the fixing member is fixedly connected to the test bench (1) and is located on the side of the first slide groove (101) away from the second slide groove (102); The power component is signal-connected to a controller, an encoder is mounted on the output shaft of the power component, a displacement sensor is mounted on the moving block (6), a fiber Bragg grating strain sensor for real-time monitoring of the effective number of turns of the spring (9) is mounted on the support rod (8), and the pressure sensor, encoder, displacement sensor and fiber Bragg grating strain sensor are all signal-connected to the controller; When the pressure sensor detects that the real-time pressure difference between the two sides of the fixing hole exceeds 15%, the controller triggers an early warning signal to notify the controller to change the screwing depth of the screw (3) so as to adjust the clamping force; When the real-time monitoring value of the pressure sensor exceeds the preset pressure threshold in the controller, the controller triggers an early warning signal to notify the user to change the screwing depth of the screw (3) so as to adjust the clamping force, and records it as an abnormal clamping event. When the displacement sensor detects that the displacement of the moving block (6) exceeds a preset displacement threshold in the controller, that is, reaches a limit position, the controller triggers a reverse instruction to reverse the movement direction of the power member; When the fiber Bragg grating strain sensor detects that the compression deformation of the spring (9) on the support rod (8) deviates from the linear relationship with the tension of the optical cable sample (13), the controller starts the self-check mode and generates an elastic failure warning signal; When the controller receives the cam (4) speed monitored in real time by the encoder and there is a deviation from a preset speed threshold in the controller, the controller starts a self-calibration program to adjust the torque output of the power part.

2. The communication optical cable testing device according to claim 1, characterized in that: A temperature control module is installed on the top of the test bench (1), the temperature control module comprises a mounting frame (10), a semiconductor cooling sheet and a plurality of infrared heating lamps, the infrared heating lamps and the semiconductor cooling sheet are both mounted on the mounting frame (10), the mounting frame (10) is evenly arranged along the travel path of the friction component, the mounting frame (10) is fixedly connected to the test bench (1), a temperature sensor is embedded on the mounting frame (10), and the temperature sensor, the semiconductor cooling sheet and the infrared heating lamp are all connected to the controller signal; When the real-time monitoring value of the temperature sensor exceeds the preset temperature threshold in the controller, the temperature control program is started and the controller adjusts the power of the infrared heating lamp and the semiconductor cooling plate.

3. The communication optical cable testing device according to claim 2, characterized in that: The test bench (1) is also equipped with an early warning module, which includes a buzzer and an indicator light. Both the buzzer and the indicator light are connected to the controller signal. When the controller receives the early warning signal, the early warning module sends out different sound and light alarm signals, thereby reminding the operator to take corresponding measures.

4. The communication optical cable testing device according to claim 3, characterized in that: The test bench (1) is also provided with an interactive module, which includes a camera, a display screen (11) and an input device (12). The camera is mounted on the mounting frame (10). The display screen (11) is used to display real-time data and test results during the test process. The input device (12) is used for operators to input test parameters and instructions. The camera, the display screen (11) and the input device (12) are all connected to the controller signal.

5. The communication optical cable testing device according to claim 4, characterized in that: The surface of the convex rod (5) is coated with a piezoelectric ceramic layer and is connected to a controller signal. The controller receives in real time the value of the piezoelectric signal after Fourier transformation. When the proportion of frequency energy above 2kHz in the harmonic component of the value exceeds the limit, it is determined that the bearing of the wheel (7) is worn, and the controller triggers a shutdown maintenance instruction.

6. The communication optical cable testing device according to claim 5, characterized in that: The test bench (1) is also provided with a safety protection module, which includes a guardrail and an emergency stop button installed around the test bench (1). The emergency stop button is connected to the controller signal. When an emergency occurs, the test is stopped by pressing the emergency stop button.

7. The communication optical cable testing device according to claim 6, characterized in that: A protective cover for preventing debris generated during the test from splashing is detachably connected to the test bench (1); the protective cover covers the friction component and the clamping component; and a transparent observation window for observing the state of the optical cable sample (13) during the test is provided on the protective cover.

8. The communication optical cable testing device according to claim 7, characterized in that: The invention also includes a data recording and analysis module, which includes a data storage unit and a data analysis unit. The data storage unit is used to store all data collected by the encoder, displacement sensor, fiber Bragg grating strain sensor, pressure sensor and temperature sensor during the test, as well as the operation record and warning information of the controller; the data analysis unit is responsible for processing and analyzing the data stored in the data storage unit to generate a test report; at the same time, the data analysis unit is also used to predict the life and fault type of the optical cable sample (13) based on historical data.

9. The communication optical cable testing device according to claim 8, characterized in that: It also includes a remote communication module for remote monitoring and management. The remote communication module is connected to the controller signal. The remote communication module transmits test data, test results and maintenance record information to a remote server or mobile device via a wireless network.

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