Optical fiber sensor alternating damp heat fatigue testing device and testing method thereof

Abstract

The invention discloses an optical fiber sensor alternating damp heat fatigue test device and a test method thereof.The device comprises a device body, a recovery assembly and a noise reduction assembly, a cylinder module in the recovery assembly is fixedly connected in a groove hole formed in the device body, and a connecting piece is fixedly connected to the output end of the cylinder module; the connecting piece is fixedly connected with a fixing piece, and the fixing piece is fixedly connected with a push rod; according to the invention, water left in the equipment after testing is re-collected to the water storage tank through the recovery assembly, so that the waste of water resources is effectively reduced, and meanwhile, the cost required by testing is reduced; noise generated during operation or movement of the equipment is effectively reduced through double damping of a reinforcing spring and a spring piece in the noise reduction assembly, and the working environment is optimized; during testing, parameter setting such as temperature and humidity is ensured to be the same as or similar to actual environment data, and the actual use effect of the optical fiber sensor is effectively improved, so that the use experience of a user is improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber testing, in particular to an alternating wet-heat fatigue testing device for an optical fiber sensor and a testing method thereof. Background Art

[0002] The alternating damp-heat fatigue test of optical fiber sensors is of great significance in the research and development, production and quality control of optical fiber sensors. Through this test, the performance stability and reliability of optical fiber sensors in alternating damp-heat environments can be evaluated, providing a basis for the optimal design and improvement of optical fiber sensors. At the same time, this test is also helpful to improve the application reliability and service life of optical fiber sensors, providing a strong guarantee for the application of optical fiber sensors in various fields.

[0003] The existing optical fiber sensor alternating humidity and heat fatigue test device and its test method basically meet the needs, but there are still some shortcomings. First, the existing fatigue test device needs to simulate a certain humidity environment when in use, which consumes a lot of water resources and increases the test cost; second, the existing fatigue test device will generate a lot of noise during the test, affecting the working environment; third, the existing fatigue test method is tested according to a fixed test standard during the test, which may not reach or far exceed the actual application environment of the optical fiber sensor, which is easy to affect the actual use effect of the optical fiber sensor; therefore, it is necessary to design an optical fiber sensor alternating humidity and heat fatigue test device and its test method. Summary of the invention

[0004] The object of the present invention is to provide an optical fiber sensor alternating damp heat fatigue test device and a test method thereof, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an optical fiber sensor alternating wet heat fatigue testing device, comprising a device body, a recovery component and a noise reduction component, a cylinder module in the recovery component is fixedly connected in a slot hole opened in the device body, a connecting piece is fixedly connected on the output end of the cylinder module, a fixing piece is fixedly connected on the connecting piece, a push rod is fixedly connected on the fixing piece, the push rod is embedded in a through slot opened on one side of the device body, a fixing plate in the noise reduction component is fixedly connected in a slot hole opened in the bottom of the device body, a support rod is fixedly connected on the fixing plate, the support rod is slidably connected to the inside of a sleeve, the sleeve is fixedly connected to a limit groove, the limit groove is sleeved in the slot hole opened in the device body, and a blocking groove is opened on one side of the inside of the device body.

[0006] As a further technical solution of the present invention, the recovery assembly is composed of a cylinder module, a connecting part, a fixing part, a push rod, a limit plate, a blocking plate, a telescopic cylinder, a cylinder fixing frame, a reflux groove, a confluence groove, a reflux pipe and a water storage tank. One side of the cylinder module is fixedly connected to the limit plate, and the limit plate is attached to the connecting part.

[0007] As a further technical solution of the present invention, a cylinder fixing frame is fixedly connected to the top of the device body, a telescopic cylinder is fixedly connected to the cylinder fixing frame, and a blocking plate is fixedly connected to the output end of the telescopic cylinder.

[0008] As a further technical solution of the present invention, the blocking plate is slidably connected to a slot hole provided in the device body, and the blocking plate is slidably connected to the limiting plate.

[0009] As a further technical solution of the present invention, a reflux groove is opened on one side of the inner part of the device body, a confluence groove is arranged at the bottom of the reflux groove, a reflux pipe is arranged on one side of the confluence groove, and the reflux groove, the confluence groove and the reflux pipe are interconnected.

[0010] As a further technical solution of the present invention, the noise reduction assembly is composed of a fixed plate, a support rod, a sleeve, a limit groove, a reinforcing spring, a mounting plate, a limit piece and a spring piece. The reinforcing spring is fixedly connected to the fixed plate, the other end of the reinforcing spring is fixedly connected to the sleeve, and the reinforcing spring is sleeved on the support rod.

[0011] As a further technical solution of the present invention, a mounting plate is fixedly connected to the bottom of the limit groove, a limit member and a spring member are fixedly connected to the mounting plate, the spring member is arranged inside the limit member, and a roller mounting frame is fixedly connected to the spring member, the roller mounting frame is sleeved inside the limit member, and a moving wheel is rotatably connected to the roller mounting frame.

[0012] As a further technical solution of the present invention, a protective door is provided on one side of the device body, and a display screen and an operation panel are provided on the device body.

[0013] A method for testing alternating damp heat fatigue of optical fiber sensors, comprising the following steps: step 1, test preparation; step 2, sensor fixing; step 3, environmental data collection; step 4, parameter setting and testing; step 5, data collection; step 6, test cycle and recording; step 7, data sorting and analysis; step 8, writing an evaluation report;

[0014] In the above step 1, the required equipment is prepared, including an environmental test chamber, a tensile and compressive stress generating device, etc., the optical fiber sensor to be tested is prepared, and it is ensured that the equipment and the sensor can work normally;

[0015] In the above step 2, the plurality of sensors prepared by the sensor are fixed on the test equipment respectively;

[0016] In the above step 3, environmental data used by the optical fiber sensor is collected, including temperature, humidity, mechanical stress, etc.;

[0017] In the above step 4, the temperature and humidity of the device are set according to the actual use environment of the optical fiber sensor. The setting range of the tensile force should not exceed 5-10 times the maximum allowable tensile force of the optical fiber sensor. At the same time, the tensile rate should be a steady tensile load, and a certain number of cycle tests and loading frequency are set. After the parameter settings are completed, the test is carried out;

[0018] In the above step 5, the central wavelength of the optical fiber sensor is measured in real time by the optical fiber sensor analyzer, and the data is collected and stored;

[0019] In the above step 6, the optical fiber sensor is continuously tested according to the set number of cycles and loading frequency, the equipment operation data is observed in real time, the test abnormality caused by abnormal equipment operation is avoided, and the test data is recorded and stored;

[0020] In the above step 7, the data collected during the test are sorted out, including the central wavelength change, temperature, humidity and other data, and the performance stability of the optical fiber sensor in the alternating hot and humid environment is analyzed, and the fatigue life of the optical fiber sensor is evaluated according to the time or number of cycles required to reach fatigue failure under specific stress conditions;

[0021] In the above step eight, an evaluation report is written based on the data analysis results and evaluation to provide support for the subsequent design and application of fiber optic sensors.

[0022] As a further technical solution of the present invention, in step 4, the specific parameters of the equipment simulating the ambient temperature and humidity are that the initial temperature range is set to -20°C to +80°C, and the initial humidity range is 30% to 95%.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the optical fiber sensor alternating wet heat fatigue test device and its test method, by extending the telescopic cylinder, pushes the baffle plate to extend, so that the baffle plate is clamped in the baffle groove, the baffle plate and the baffle groove can be sealed by fitting and fixing the high temperature resistant rubber material, and then the device body is subjected to alternating wet heat fatigue test, after the test is completed, the telescopic cylinder retracts, drives the baffle plate to lift, and then drives the connecting part to move through the cylinder module, the movement of the connecting part drives the movement of the fixing part, and the movement of the fixing part drives the push rod to move, so that the push rod slides on the inner top of the device body, and the water mist that is recooled into liquid water after the test is scraped from the top to the reflux groove, the liquid water flows from the reflux groove into the confluence groove and the reflux pipe and then re-enters the water storage tank, thereby recycling and utilizing the water resources consumed in the test, effectively reducing the waste of water resources and reducing the cost required for the test. The vibration generated during the movement or testing of the device body is transmitted to the noise reduction component, causing the support rod to be pressed down and slide in the sleeve, thereby compressing the strengthening spring. The elastic force of the strengthening spring initially reduces the vibration of the equipment, and then the vibration is transmitted to the spring part through the limit groove and the mounting plate, causing the roller mounting frame to slide inside the limit part. The elastic force of the spring part further reduces the vibration of the equipment, and finally the vibration is transmitted to the ground through the moving wheel. The double shock absorption of the strengthening spring and the spring part effectively reduces the noise generated during the operation or movement of the equipment, thereby optimizing the working environment. When performing alternating hot and humid fatigue tests, the environmental data of the optical fiber sensor is collected, and fatigue tests are performed based on the environmental data to ensure that the temperature, humidity and other parameter settings are the same or similar to the actual environmental data. The test data obtained can effectively improve the actual use effect of the optical fiber sensor, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the position structure of the push rod in the present invention;

[0026] Figure 3 for Figure 2 Schematic diagram of the structure of the middle A area;

[0027] Figure 4 It is a schematic diagram of the position structure of the reflux pipe in the present invention;

[0028] Figure 5 It is a structural schematic diagram of the noise reduction component in the present invention;

[0029] Figure 6 is a flow chart of the method of the present invention;

[0030] In the figure: 1. Device body; 2. Recovery component; 4. Noise reduction component; 5. Roller mounting frame; 6. Moving wheel; 7. Protective door; 8. Display screen; 9. Operation panel; 10. Blocking groove; 21. Cylinder module; 22. Connector; 23. Fixing part; 24. Push rod; 25. Limiting plate; 26. Blocking plate; 27. Telescopic cylinder; 28. Cylinder fixing frame; 29. ​​Reflux groove; 30. Confluence groove; 31. Reflux pipe; 32. Water storage tank; 41. Fixing plate; 42. Support rod; 43. Sleeve; 44. Limiting groove; 45. Strengthening spring; 46. Mounting plate; 47. Limiting part; 48. Spring part. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0032] Please see attached Figure 1 -Attached Figure 5An embodiment of the present invention provides: an alternating wet heat fatigue test device for an optical fiber sensor, comprising a device body 1, a recovery component 2 and a noise reduction component 4, a cylinder module 21 in the recovery component 2 is fixedly connected in a slot hole provided in the device body 1, a connecting piece 22 is fixedly connected to the output end of the cylinder module 21, a fixing piece 23 is fixedly connected to the connecting piece 22, a push rod 24 is fixedly connected to the fixing piece 23, the push rod 24 is embedded in a through slot provided at one side of the inside of the device body 1, a fixing plate 41 in the noise reduction component 4 is fixedly connected in a slot hole provided at the bottom of the device body 1, a support rod 42 is fixedly connected to the fixing plate 41, The support rod 42 is slidably connected to the inside of the sleeve 43, and the sleeve 43 is fixedly connected to the limit groove 44. The limit groove 44 is sleeved in the slot hole opened in the device body 1. A blocking groove 10 is opened on one side of the inside of the device body 1. The recovery component 2 is composed of a cylinder module 21, a connecting piece 22, a fixing piece 23, a push rod 24, a limit plate 25, a blocking plate 26, a telescopic cylinder 27, a cylinder fixing frame 28, a reflux groove 29, a confluence groove 30, a reflux pipe 31 and a water storage tank 32. One side of the cylinder module 21 is fixedly connected to the limit plate 25, and the limit plate 25 is attached to the connecting piece 22. The top of the device body 1 is fixedly connected to the cylinder fixing frame 2 8. A telescopic cylinder 27 is fixedly connected to the cylinder fixing frame 28, and a blocking plate 26 is fixedly connected to the output end of the telescopic cylinder 27. The blocking plate 26 is slidably connected to the slot hole opened in the device body 1, and the blocking plate 26 is slidably connected to the limit plate 25. A reflux groove 29 is opened on one side of the device body 1, and a confluence groove 30 is arranged at the bottom of the reflux groove 29. A reflux pipe 31 is arranged on one side of the confluence groove 30. The reflux groove 29, the confluence groove 30 and the reflux pipe 31 are connected to each other. The noise reduction component 4 is composed of a fixing plate 41, a support rod 42, a sleeve 43, a limit groove 44, a reinforcing spring 45, a mounting plate 46, a limit member 47 and a spring member 48, a reinforcing spring 45 is fixedly connected to the fixing plate 41, the other end of the reinforcing spring 45 is fixedly connected to the sleeve 43, and the reinforcing spring 45 is sleeved on the support rod 42, a mounting plate 46 is fixedly connected to the bottom of the limiting groove 44, a limiting member 47 and a spring member 48 are fixedly connected to the mounting plate 46, the spring member 48 is arranged inside the limiting member 47, and a roller mounting frame 5 is fixedly connected to the spring member 48, the roller mounting frame 5 is sleeved inside the limiting member 47, and a moving wheel 6 is rotatably connected to the roller mounting frame 5, a protective door 7 is arranged on one side of the device body 1, and a display screen 8 and an operation panel 9 are arranged on the device body 1.

[0033] Please see attached Figure 6, an embodiment provided by the present invention: a method for testing alternating damp heat fatigue of optical fiber sensors, comprising the following steps: step 1, test preparation; step 2, sensor fixing; step 3, environmental data collection; step 4, parameter setting and testing; step 5, data collection; step 6, test cycle and recording; step 7, data collation and analysis; step 8, writing an evaluation report;

[0034] In the above step 1, the required equipment is prepared, including an environmental test chamber, a tensile and compressive stress generating device, etc., the optical fiber sensor to be tested is prepared, and it is ensured that the equipment and the sensor can work normally;

[0035] In the above step 2, the plurality of sensors prepared by the sensor are fixed on the test equipment respectively;

[0036] In the above step 3, environmental data used by the optical fiber sensor is collected, including temperature, humidity, mechanical stress, etc.;

[0037] In the above step 4, the temperature and humidity of the equipment are set according to the actual use environment of the optical fiber sensor. The setting range of the tensile force should not exceed 5-10 times the maximum allowable tensile force of the optical fiber sensor. At the same time, the tensile rate should be a stable tensile load, and a certain number of cycle tests and loading frequency should be set. After the parameter setting is completed, the test is carried out; the specific parameters of the equipment simulating the ambient temperature and humidity are that the initial temperature range is set to -20°C to +80°C, and the initial humidity range is 30% to 95%;

[0038] In the above step 5, the central wavelength of the optical fiber sensor is measured in real time by the optical fiber sensor analyzer, and the data is collected and stored;

[0039] In the above step 6, the optical fiber sensor is continuously tested according to the set number of cycles and loading frequency, the equipment operation data is observed in real time, the test abnormality caused by abnormal equipment operation is avoided, and the test data is recorded and stored;

[0040] In the above step 7, the data collected during the test are sorted out, including the central wavelength change, temperature, humidity and other data, and the performance stability of the optical fiber sensor in the alternating hot and humid environment is analyzed, and the fatigue life of the optical fiber sensor is evaluated according to the time or number of cycles required to reach fatigue failure under specific stress conditions;

[0041] In the above step eight, an evaluation report is written based on the data analysis results and evaluation to provide support for the subsequent design and application of fiber optic sensors.

[0042] Working principle: when in use, the telescopic cylinder 27 is extended to push the baffle plate 26 to extend, so that the baffle plate 26 is clamped in the baffle groove 10. The baffle plate 26 and the baffle groove 10 can be sealed by fitting and fixing the high-temperature resistant rubber material, and then the device body 1 is subjected to the alternating damp heat fatigue test. After the test is completed, the telescopic cylinder 27 is retracted to drive the baffle plate 26 to lift, and then the cylinder module 21 drives the connecting member 22 to move, the connecting member 22 moves to drive the fixing member 23 to move, and the fixing member 23 moves to drive the push rod 24 to move, so that the push rod 24 slides on the top of the inner part of the device body 1, and the water mist that is recooled into liquid water after the test is scraped from the top to the reflux groove 29, and the liquid water flows from the reflux groove 29 into the confluence groove 30 and the reflux pipe 31 and then re-enters the water storage tank 32, thereby recycling and utilizing the water resources consumed in the test, effectively reducing the waste of water resources and reducing the cost required for the test; the device body 1 moves Or the vibration generated during the test is transmitted to the noise reduction component 4, causing the support rod 42 to be pressed down and slide in the sleeve 43, thereby compressing the reinforcing spring 45. The elastic force of the reinforcing spring 45 initially reduces the vibration of the equipment, and then the vibration is transmitted to the spring member 48 through the limit groove 44 and the mounting plate 46, causing the roller mounting frame 5 to slide inside the limit member 47. The elastic force of the spring member 48 further reduces the vibration of the equipment, and finally the vibration is transmitted to the ground through the moving wheel 6. The double shock absorption of the reinforcing spring 45 and the spring member 48 effectively reduces the noise generated during the operation or movement of the equipment, so that the working environment is optimized; when performing the alternating hot and humid fatigue test, the use environment data of the optical fiber sensor is collected, and the fatigue test is performed based on the use environment data to ensure that the temperature, humidity and other parameter settings are the same or similar to the actual environment data. The test data obtained can effectively improve the actual use effect of the optical fiber sensor, thereby improving the user experience.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An alternating damp-heat fatigue test device for an optical fiber sensor, comprising a device body (1), a recovery component (2) and a noise reduction component (4), characterized in that: The cylinder module (21) in the recovery component (2) is fixedly connected in the slot hole provided in the device body (1); a connecting piece (22) is fixedly connected on the output end of the cylinder module (21); a fixing piece (23) is fixedly connected on the connecting piece (22); a push rod (24) is fixedly connected on the fixing piece (23); the push rod (24) is embedded in a through slot provided on one side of the inside of the device body (1); a fixing plate (41) in the noise reduction component (4) is fixedly connected in the slot hole provided in the bottom of the device body (1); a support rod (42) is fixedly connected on the fixing plate (41); the support rod (42) is slidably connected to the inside of a sleeve (43); the sleeve (43) is fixedly connected to a limiting groove (44); the limiting groove (44) is sleeved in the slot hole provided in the device body (1); and a blocking groove (10) is provided on one side of the inside of the device body (1).

2. The optical fiber sensor alternating damp heat fatigue test device according to claim 1, characterized in that: The recovery assembly (2) is composed of a cylinder module (21), a connecting piece (22), a fixing piece (23), a push rod (24), a limit plate (25), a blocking plate (26), a telescopic cylinder (27), a cylinder fixing frame (28), a reflux groove (29), a confluence groove (30), a reflux pipe (31) and a water storage tank (32); one side of the cylinder module (21) is fixedly connected to the limit plate (25), and the limit plate (25) is attached to the connecting piece (22).

3. The optical fiber sensor alternating damp-heat fatigue test device according to claim 1, characterized in that: The top of the device body (1) is fixedly connected to a cylinder fixing frame (28), a telescopic cylinder (27) is fixedly connected to the cylinder fixing frame (28), and a blocking plate (26) is fixedly connected to the output end of the telescopic cylinder (27).

4. The optical fiber sensor alternating damp heat fatigue test device according to claim 3, characterized in that: The blocking plate (26) is slidably connected to a slot hole provided in the device body (1), and the blocking plate (26) is slidably connected to the limiting plate (25).

5. The optical fiber sensor alternating damp-heat fatigue test device according to claim 3, characterized in that: A reflux groove (29) is provided on one side of the device body (1), a confluence groove (30) is provided at the bottom of the reflux groove (29), a reflux pipe (31) is provided on one side of the confluence groove (30), and the reflux groove (29), the confluence groove (30) and the reflux pipe (31) are interconnected.

6. The optical fiber sensor alternating damp-heat fatigue test device according to claim 1, characterized in that: The noise reduction component (4) is composed of a fixing plate (41), a support rod (42), a sleeve (43), a limiting groove (44), a reinforcing spring (45), a mounting plate (46), a limiting member (47) and a spring member (48); the fixing plate (41) is fixedly connected to the reinforcing spring (45); the other end of the reinforcing spring (45) is fixedly connected to the sleeve (43); and the reinforcing spring (45) is sleeved on the support rod (42).

7. The optical fiber sensor alternating damp-heat fatigue test device according to claim 6, characterized in that: The bottom of the limiting groove (44) is fixedly connected to a mounting plate (46), a limiting member (47) and a spring member (48) are fixedly connected to the mounting plate (46), the spring member (48) is arranged inside the limiting member (47), and a roller mounting frame (5) is fixedly connected to the spring member (48), the roller mounting frame (5) is sleeved inside the limiting member (47), and a moving wheel (6) is rotatably connected to the roller mounting frame (5).

8. The optical fiber sensor alternating damp-heat fatigue test device according to claim 5, characterized in that: A protective door (7) is provided on one side of the device body (1), and a display screen (8) and an operation panel (9) are provided on the device body (1).

9. A method for testing alternating damp heat fatigue of an optical fiber sensor, comprising the following steps: Step 1: test preparation; Step 2: sensor fixing; Step 3: environmental data collection; Step 4: parameter setting and testing; Step 5: data collection; Step 6: test cycle and recording; Step 7: data collation and analysis; Step 8: writing an evaluation report; It is characterized by: In the above step 1, the required equipment is prepared, including an environmental test chamber, a tensile and compressive stress generating device, etc., the optical fiber sensor to be tested is prepared, and it is ensured that the equipment and the sensor can work normally; In the above step 2, the plurality of sensors prepared by the sensor are fixed on the test equipment respectively; In the above step 3, environmental data used by the optical fiber sensor is collected, including temperature, humidity, mechanical stress, etc.; In the above step 4, the temperature and humidity of the device are set according to the actual use environment of the optical fiber sensor. The setting range of the tensile force should not exceed 5-10 times the maximum allowable tensile force of the optical fiber sensor. At the same time, the tensile rate should be a steady tensile load, and a certain number of cycle tests and loading frequency are set. After the parameter settings are completed, the test is carried out; In the above step 5, the central wavelength of the optical fiber sensor is measured in real time by the optical fiber sensor analyzer, and the data is collected and stored; In the above step 6, the optical fiber sensor is continuously tested according to the set number of cycles and loading frequency, the equipment operation data is observed in real time, the test abnormality caused by abnormal equipment operation is avoided, and the test data is recorded and stored; In the above step 7, the data collected during the test are sorted out, including the central wavelength change, temperature, humidity and other data, and the performance stability of the optical fiber sensor in the alternating hot and humid environment is analyzed, and the fatigue life of the optical fiber sensor is evaluated according to the time or number of cycles required to reach fatigue failure under specific stress conditions; In the above step eight, an evaluation report is written based on the data analysis results and evaluation to provide support for the subsequent design and application of fiber optic sensors.

10. The method for testing optical fiber sensor alternating damp heat fatigue according to claim 9, characterized in that: In the step 4, the specific parameters of the equipment simulating the ambient temperature and humidity are that the initial temperature range is set to -20°C to +80°C, and the initial humidity range is 30% to 95%.

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