CN116907780B - Vibration optical fiber detector test device - Google Patents
Vibration optical fiber detector test device Download PDFInfo
- Publication number
- CN116907780B CN116907780B CN202311174480.9A CN202311174480A CN116907780B CN 116907780 B CN116907780 B CN 116907780B CN 202311174480 A CN202311174480 A CN 202311174480A CN 116907780 B CN116907780 B CN 116907780B
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- vibration
- fixed
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- 239000013307 optical fiber Substances 0.000 title abstract description 26
- 239000000835 fiber Substances 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The invention relates to the field of test devices, in particular to a test device for a vibrating optical fiber detector. Including the bottom plate, the bottom plate both sides all are provided with adjusting device, are provided with drive arrangement between two adjusting device, adjusting device and mounting panel fixed connection are fixed with vibrating motor on the mounting panel, and the vibrating motor top is provided with bears the subassembly, bears subassembly lower extreme and vibrating motor contact, bears subassembly and adjusting device through spring elastic connection. According to the invention, the distance between the two adjusting frames is adjusted so as to change the length of the vibrating optical fiber above the vibrating plate, and when the length of the vibrating optical fiber to be tested is longer, the test frequency can be reduced and the test efficiency can be improved by increasing the length of each test.
Description
Technical Field
The invention relates to the field of test devices, in particular to a test device for a vibrating optical fiber detector.
Background
Vibrating fiber optic detectors employ a "photoelastic effect" mechanism. When external disturbance acts on the vibrating fiber, the phase change of the transmitted light in the vibrating fiber is caused. The detector is used for collecting and transmitting the phase change quantity of the light, and vibration information can be obtained after photoelectric conversion, collection and analysis. The vibration optical fiber detector can monitor the area where the camera cannot cover, and is suitable for underground pipelines and urban pipe galleries. The vibration fiber detector needs to be fixed on the detected object when being installed.
In the test of the vibrating fiber optic probe, it is necessary to apply vibration waves of different magnitudes to the vibrating fiber optic. The phase change of the transmitted light in the vibrating fiber is then sensed by the detector. The detector acquires the phase change quantity of the transmitted light in the vibration optical fiber to obtain vibration information. The vibration wave applied to the vibration fiber is compared with the vibration wave detected by the detector, and the sensitivity and accuracy of the vibration fiber detector are determined.
However, in the practical use process, the vibration optical fiber needs to be installed on the measured object, and the vibration quantity of the vibration wave received by different measured objects is different due to different structural or installation strength requirements, such as outdoor protection steel mesh and brick wall. The outdoor protective net and the bricked wall are subjected to vibration waves with the same size, but the vibration amounts generated by the outdoor protective net and the bricked wall are different. The existing vibration optical fiber detector test device cannot simulate different installation scenes of the vibration optical fiber to conduct tests, the tests are too ideal, and the tests have larger limitations.
Disclosure of Invention
The invention aims to solve the technical problem of providing a vibrating optical fiber detector test device which can simulate different installation scenes of a vibrating optical fiber to test.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the utility model provides a vibration fiber optic probe test device, which comprises a base plate, both sides of the bottom plate all are provided with adjusting device, be provided with drive arrangement between two adjusting device, adjusting device and mounting panel fixed connection, be fixed with vibrating motor on the mounting panel, the vibrating motor top is provided with the carrier assembly, carrier assembly lower extreme and vibrating motor contact, carrier assembly passes through spring elastic connection with adjusting device, adjusting device includes the lead screw, drive arrangement and threaded connection, threaded connection has the slider on the lead screw, slider and bottom plate sliding connection, swing joint has two support on the slider, two support are according to the axle center symmetry setting of lead screw, equal sliding connection of support lower extreme has the guide, guide and bottom plate fixed connection, two guide are according to the axle center symmetry setting of lead screw, spring and support fixed connection, the in-process spring that drive arrangement was kept away from to the slider drive two support is increased to carrier assembly's pulling force.
Specifically, the driving device comprises a double-end motor, the double-end motor is concentric with the screw rod, and an output shaft of the double-end motor is fixedly connected with the screw rod on one side of the double-end motor. The screw rod is rotationally connected with a second supporting block, and the second supporting block is fixedly connected with the bottom plate.
Specifically, the bearing assembly comprises a vibrating plate, connectors are fixed at four corners of the vibrating plate, springs are fixedly connected with the connectors, two sliding holes are formed in the vibrating plate, and the two sliding holes are arranged in parallel; still include two regulating brackets, the regulating part is including the connecting plate that is located the vibrating plate below, and the connecting plate both ends all are fixed with the sliding shaft, and two sliding shafts of regulating part run through two slide holes respectively, and sliding shaft slip joint is in its slide hole that locates, all rotates on the sliding shaft of vibrating plate top and is connected with the gyro wheel, all offer the screw hole on the connecting plate, and threaded hole threaded connection has the locking lever, and the locking lever supports the vibrating plate tightly.
Specifically, the support comprises a vertical plate, a telescopic rod is fixed on the vertical plate, the axial direction of the telescopic rod is perpendicular to the axial direction of the screw rod, the telescopic rod is fixedly connected with the sliding block, and the upper end of the vertical plate is fixedly connected with the spring.
Specifically, the guide piece includes the slide bar, and slide bar one end is fixed with the backup pad, and mounting panel and backup pad fixed connection, the slide bar other end are fixed with first supporting shoe, and the slide bar runs through the through-hole on its one side riser, slide bar and riser sliding connection, and the through-hole internal fixation has the key, has seted up the elongated slot on the slide bar, and the length direction of elongated slot is parallel with the axial direction of slide bar, and the key slip joint is in the elongated slot.
Specifically, a rubber pad is sleeved in a wheel groove of the roller.
Specifically, the vibrating plate on the outer side of one roller on the adjusting piece is rotationally connected with pulleys, and the two pulleys are arranged in a staggered mode.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the distance between the two adjusting frames is adjusted so as to change the length of the vibrating optical fiber above the vibrating plate, and when the length of the vibrating optical fiber to be tested is longer, the test frequency can be reduced and the test efficiency can be improved by increasing the length of each test.
2. Through changing the pulling force of spring to the vibrating plate, receive the vibration amplitude of equivalent vibration wavefront at the vibrating plate and change the vibrating plate, and then simulate the different installation environment of vibration optic fibre for the test process can be more close to the condition of vibration polished rod reality installation, can improve test data's authenticity and accuracy.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is an enlarged view of region B in fig. 1.
Fig. 3 is an enlarged view of region C in fig. 2.
Fig. 4 is an enlarged view of area a in fig. 1.
Fig. 5 is a bottom view of the vibration plate.
Fig. 6 is a schematic view of an adjusting bracket.
Fig. 7 is a schematic diagram of the region D in fig. 6.
Fig. 8 is a schematic view of a vibration motor.
Fig. 9 is a schematic view of the engagement of the guide with the support.
Fig. 10 is a schematic view of a via-in-key.
The names of the parts in the drawings are as follows:
1. a bottom plate; 101. a support plate; 102. a first support block; 103. a slide bar; 104. a second support block; 2. a double-ended motor; 201. a screw rod; 202. a slide block; 203. a telescopic rod; 204. a vertical plate; 205. a spring; 206. a through hole; 207. a key; 3. a vibration plate; 301. a connector; 302. a slide hole; 303. a sliding shaft; 304. a roller; 305. a connecting plate; 306. a threaded hole; 307. a rubber pad; 308. a locking lever; 309. a pulley; 4. a mounting plate; 401. a vibration motor.
Detailed Description
As shown in figures 1-10, the test device for the vibrating optical fiber detector comprises a bottom plate 1, wherein adjusting devices are arranged on two sides of the bottom plate 1. A driving device is arranged between the two adjusting devices.
The adjusting device is fixedly connected with the mounting plate 4. A vibration motor 401 is fixed to the mounting plate 4. A bearing assembly is arranged above the vibration motor 401, and the lower end of the bearing assembly is in contact with the vibration motor 401. The carrier assembly is resiliently connected to the adjustment means by a spring 205.
The adjusting device comprises a screw 201, and the driving device is connected with the screw 201. The driving device comprises a double-end motor 2, the double-end motor 2 is concentric with a screw 201, and an output shaft of the double-end motor 2 is fixedly connected with the screw 201 on one side of the double-end motor.
The screw 201 is rotatably connected with a second support block 104, and the second support block 104 is fixedly connected with the bottom plate 1.
The screw threads of the screw rods 201 of the two adjusting devices are opposite in screw direction.
The screw 201 is connected with a sliding block 202 in a threaded manner, and the sliding block 202 is connected with the bottom plate 1 in a sliding manner. Two supports are movably connected to the slider 202, and the two supports are symmetrically arranged according to the axis of the screw 201. The lower ends of the support pieces are all connected with guide pieces in a sliding manner, the guide pieces are fixedly connected with the bottom plate 1, and the two guide pieces are symmetrically arranged according to the axis of the screw 201. The spring 205 is fixedly connected to the support.
The tension of the spring 205 on the carrier assembly increases as the slider 202 drives the two legs away from the drive.
The support comprises a vertical plate 204, a telescopic rod 203 is fixed on the vertical plate 204, the axial direction of the telescopic rod 203 is perpendicular to the axial direction of the screw rod 201, the telescopic rod 203 is fixedly connected with the sliding block 202, and the upper end of the vertical plate 204 is fixedly connected with the spring 205.
The bearing assembly comprises a vibrating plate 3, connectors 301 are fixed at four corners of the vibrating plate 3, and springs 205 are fixedly connected with the connectors 301. The bottom surface of the vibration plate 3 is in contact with the vibration motor 401.
Two sliding holes 302 are formed in the vibrating plate 3, and the two sliding holes 302 are arranged in parallel.
Also comprises two adjusting frames. The adjusting member comprises a connection plate 305 located below the vibration plate 3. Sliding shafts 303 are fixed to both ends of the connection plate 305. Two sliding shafts 303 of the adjusting piece respectively penetrate through the two sliding holes 302, and the sliding shafts 303 are in sliding clamping connection with the sliding holes 302 where the sliding shafts 303 are located. The sliding shafts 303 above the vibrating plate 3 are respectively and rotatably connected with rollers 304. A rubber pad 307 is sleeved in a wheel groove of the roller 304. The connecting plates 305 are provided with threaded holes 306, locking rods 308 are connected in the threaded holes 306 in a threaded mode, and the locking rods 308 tightly abut against the vibrating plate 3.
The vibration plate 3 on the outer side of one roller 304 on the adjusting piece is rotatably connected with a pulley 309, and the two pulleys 309 are arranged in a dislocation way.
The guide piece comprises a slide bar 103, a support plate 101 is fixed at one end of the slide bar 103, the mounting plate 4 is fixedly connected with the support plate 101, and a first support block 102 is fixed at the other end of the slide bar 103. The slide bar 103 penetrates through a through hole 206 on one side of the vertical plate 204, and the slide bar 103 is in sliding connection with the vertical plate 204. A key 207 is fixed in the through hole 206, the slide bar 103 is provided with a long groove, the length direction of the long groove is parallel to the axial direction of the slide bar 103, and the key 207 is in sliding clamping connection in the long groove.
In the test, the vibrating fiber was S-shaped around the four rollers 304 and allowed to ride over the pulley 309. The rubber pad 307 in the roller 304 can effectively protect the protective layer of the vibrating optical fiber, and the protective layer of the vibrating optical fiber part contacted with the roller 304 is prevented from being damaged when the vibrating plate 3 drives the vibrating optical fiber to vibrate.
The probe is then connected to a vibrating fiber optic. The vibration motor 401 is started, and the vibration motor 401 can drive the vibration plate 3 to vibrate at a fixed frequency. When the vibration motor 401 drives the vibration optical fiber above the vibration plate 3 to vibrate through the vibration plate 3, the detector can detect the vibration wave of the vibration optical fiber. The time from the vibration wave received by the vibration plate 3 to the detection of the vibration wave by the vibration detector is recorded, and the sensitivity of the vibration fiber detector is further tested.
The double-end motor 2 is started, so that the sliding block 202 is far away from the double-end motor 2, when the sliding block 202 is far away from the double-end motor 2, the vertical plates 204 on two sides of the sliding block 202 are far away from each other under the guiding action of the sliding rods 103 on two sides of the sliding block 202, the telescopic rod 203 is stretched, and the spring 205 is stretched. After the spring 205 is stretched, the tension of the spring 205 against the vibration plate 3 increases. In the case where the vibration plate 3 receives the vibration wave of the vibration motor 401 with a constant magnitude, the vibration amplitude of the vibration plate 3 and the vibration fiber thereabove is reduced.
The vibration motor 401 is ensured to be unchanged in the magnitude of vibration waves transmitted to the vibration plate 3. The vibration amplitude of the vibration plate 3 and the vibration fiber above the vibration plate 3 is changed by changing the tension of the spring 205 to the vibration plate 3. And further simulate that the vibration optical fiber is mounted on an object with different vibration amplitudes under the condition of the same vibration wave. The vibration wave of the vibration plate 3 is tested, and the vibration wave of the vibration plate 3 is compared with the vibration wave detected by the vibration optical fiber detector, so that the accuracy of the vibration optical fiber detector can be detected. By attaching the vibration fiber to the vibration plate 3 capable of changing the vibration amplitude for the test, the authenticity of the test data can be improved.
The distance between the two adjusting frames is adjusted by loosening the locking rod 308, and then the adjusting frames are locked and fixed on the vibrating plate 3 by utilizing the locking rod 308, so that the length of the vibrating optical fiber above the vibrating plate 3 can be changed, and when the length of the vibrating optical fiber to be tested is longer, the test frequency can be reduced by increasing the length of each test, and the test efficiency can be improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. The utility model provides a vibration fiber detector test device, including bottom plate (1), a serial communication port, bottom plate (1) both sides all are provided with adjusting device, be provided with drive arrangement between two adjusting device, adjusting device and mounting panel (4) fixed connection, be fixed with vibrating motor (401) on mounting panel (4), vibrating motor (401) top is provided with the bearing assembly, bearing assembly lower extreme and vibrating motor (401) contact, bearing assembly passes through spring (205) elastic connection with adjusting device, adjusting device includes lead screw (201), drive arrangement is connected with lead screw (201), the spiral direction of the lead screw (201) screw thread of two adjusting device is opposite, threaded connection has slider (202) on lead screw (201), slider (202) and bottom plate (1) sliding connection, swing joint has two branches on slider (202), two branches are according to the axisymmetric setting of lead screw (201), branch lower extreme all sliding connection has the direction piece, direction piece and bottom plate (1) fixed connection, two direction pieces are according to the axisymmetric setting of lead screw (201), spring (205) and branch piece fixed connection, the pulling force of the drive assembly in the drive arrangement of two branch pieces in the device that keep away from the lead screw (205); the driving device comprises a double-end motor (2), the double-end motor (2) is concentric with a screw rod (201), an output shaft of the double-end motor (2) is fixedly connected with the screw rod (201) at one side of the double-end motor, a second supporting block (104) is rotatably connected to the screw rod (201), and the second supporting block (104) is fixedly connected with the bottom plate (1); the bearing assembly comprises a vibrating plate (3), connectors (301) are fixed at four corners of the vibrating plate (3), springs (205) are fixedly connected with the connectors (301), two sliding holes (302) are formed in the vibrating plate (3), and the two sliding holes (302) are arranged in parallel; the vibration plate comprises a vibration plate (3), and is characterized by further comprising two adjusting frames, wherein each adjusting member comprises a connecting plate (305) positioned below the vibration plate (3), sliding shafts (303) are fixed at two ends of each connecting plate (305), each two sliding shafts (303) of each adjusting member respectively penetrate through two sliding holes (302), each sliding shaft (303) is in sliding connection with the corresponding sliding hole (302), each sliding shaft (303) above the vibration plate (3) is rotatably connected with a roller (304), each connecting plate (305) is provided with a threaded hole (306), locking rods (308) are connected with internal threads of the threaded holes (306), and each locking rod (308) tightly abuts against the corresponding vibration plate (3); the support comprises a vertical plate (204), a telescopic rod (203) is fixed on the vertical plate (204), the axial direction of the telescopic rod (203) is perpendicular to the axial direction of the screw rod (201), the telescopic rod (203) is fixedly connected with the sliding block (202), and the upper end of the vertical plate (204) is fixedly connected with the spring (205); the guide piece comprises a slide bar (103), a support plate (101) is fixed at one end of the slide bar (103), the mounting plate (4) is fixedly connected with the support plate (101), a first support block (102) is fixed at the other end of the slide bar (103), the slide bar (103) penetrates through a through hole (206) in a side vertical plate (204) of the slide bar, the slide bar (103) is in sliding connection with the vertical plate (204), a key (207) is fixed in the through hole (206), a long groove is formed in the slide bar (103), the length direction of the long groove is parallel to the axial direction of the slide bar (103), and the key (207) is in sliding clamping connection with the long groove.
2. The vibrating fiber optic probe test device of claim 1, wherein the groove of the roller (304) is internally sleeved with a rubber pad (307).
3. The vibrating fiber optic probe test device according to claim 1, wherein the vibrating plate (3) on the outer side of one of the rollers (304) on the adjusting member is rotatably connected with pulleys (309), and the two pulleys (309) are arranged in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311174480.9A CN116907780B (en) | 2023-09-13 | 2023-09-13 | Vibration optical fiber detector test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311174480.9A CN116907780B (en) | 2023-09-13 | 2023-09-13 | Vibration optical fiber detector test device |
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| Publication Number | Publication Date |
|---|---|
| CN116907780A CN116907780A (en) | 2023-10-20 |
| CN116907780B true CN116907780B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311174480.9A Active CN116907780B (en) | 2023-09-13 | 2023-09-13 | Vibration optical fiber detector test device |
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| CN (1) | CN116907780B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118067233B (en) * | 2024-04-22 | 2024-06-14 | 南京同科科技发展有限公司 | Vibration optical fiber detector test device |
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| CN116907780A (en) | 2023-10-20 |
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