CN114485451A - High-precision fiber grating stress-strain sensor - Google Patents
High-precision fiber grating stress-strain sensor Download PDFInfo
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- CN114485451A CN114485451A CN202210141899.3A CN202210141899A CN114485451A CN 114485451 A CN114485451 A CN 114485451A CN 202210141899 A CN202210141899 A CN 202210141899A CN 114485451 A CN114485451 A CN 114485451A
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- 239000000835 fiber Substances 0.000 title claims abstract description 36
- 238000009413 insulation Methods 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims abstract 4
- 238000007789 sealing Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 abstract description 9
- 238000004321 preservation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000013307 optical fiber Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/26—Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
Abstract
The invention relates to the technical field of fiber bragg grating stress-strain sensors, in particular to a high-precision fiber bragg grating stress-strain sensor which comprises a strain sensor, a blocking device and a positioning device, wherein the blocking device is arranged on the outer side of the strain sensor and comprises a heat insulation inner pipe, the heat insulation inner pipe is arranged on the outer side of the strain sensor, the heat insulation inner pipe, a piston plate and a detection block are arranged in the invention, when the device is used, the heat insulation inner pipe and the heat insulation sleeve are sleeved on the outer side of the strain sensor, then a rotary threaded shaft is rotated to be in spiral connection with the piston plate, inert gas is extracted through an air inlet pipe, then the inert gas is discharged between the strain sensor and the heat insulation pipe through an air outlet pipe, and the elastic force of a first spring on the detection block is matched, so that the device has good heat preservation and insulation effects on the fiber bragg grating stress-strain sensor, and the influence of external temperature on the fiber bragg grating stress-strain sensor is avoided, therefore, the precision of the fiber bragg grating stress-strain sensor in use is improved.
Description
Technical Field
The invention relates to the technical field of fiber bragg grating stress-strain sensors, in particular to a high-precision fiber bragg grating stress-strain sensor.
Background
The fiber grating sensor is a wavelength modulation type fiber sensor, the sensors mainly comprise a fiber grating strain sensor, a temperature sensor, an acceleration sensor, a displacement sensor, a pressure sensor, a flow sensor, a liquid level sensor and the like, the fiber grating strain sensor is the fiber sensor which is most widely applied and has the mature technology in the engineering field, the strain directly influences the wavelength drift of the fiber grating, under the condition that the working environment is better or the structure to be measured requires a small sensor, a bare fiber grating is directly adhered to the surface of the structure to be measured or is buried in the structure, and the fiber grating is fragile and easy to damage in the severe working environment, therefore, the optical fiber grating stress-strain sensor can be used after being packaged, the conventional packaging mode mainly comprises a substrate type, a tube type and a two-end clamping type based on the tube type, along with the continuous development of the society, the application of the optical fiber grating stress-strain sensor is more and more, but when part of the optical fiber grating stress-strain sensor used for geological disaster monitoring is used, the influence of external temperature on the optical fiber grating stress-strain sensor cannot be well avoided, so that the precision of the optical fiber grating stress-strain sensor in use is influenced, and when the optical fiber grating stress-strain sensor is fixed, the optical fiber grating stress-strain sensor is not convenient to be stably fixed according to the flatness of a fixing surface, so that the normal installation and use of the optical fiber grating stress-strain sensor are influenced.
Disclosure of Invention
The present invention is directed to a high-precision fiber grating stress-strain sensor, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a fiber grating stress strain transducer of high accuracy, includes strain transducer, separation device and positioner, the strain transducer outside is equipped with the separation device, the separation device is including thermal-insulated inner tube, the strain transducer outside is equipped with thermal-insulated inner tube, thermal-insulated inner tube outside sliding connection has the heat insulation sleeve pipe, thermal-insulated inner tube top fixedly connected with fixed box, the inboard sliding connection of fixed box has the piston plate, the inboard screwed connection of piston plate has the rotation threaded spindle, and rotates threaded spindle and fixed box rotation and be connected, fixed box front end intercommunication has the intake pipe, fixed box bottom intercommunication has the outlet duct, the fixed cover of the equal fixedly connected with in both ends is controlled in the strain transducer outside, the fixed cover outside is equipped with positioner.
Preferably, the inboard one end of heat insulating sleeve is equipped with the internal thread, fixed cover outside one end is equipped with the external screw thread, and heat insulating sleeve and fixed cover screwed connection, heat insulating sleeve outside one end is equipped with the sealing washer, and sealing washer and fixed cover in close contact with, the sealing washer is made by the panel of rubber material.
Preferably, the piston plate outside fixedly connected with is solid fixed ring, and gu fixed ring and fixed case sliding connection, gu fixed ring is made by the panel of rubber material.
Preferably, the inner side of the air inlet pipe and the inner side of the air outlet pipe are both provided with one-way valves, and the other end of the air outlet pipe is communicated with the heat insulation inner pipe.
Preferably, the bottom end of the heat insulation inner pipe is communicated with a detection box through a connecting pipe, a first spring is fixedly connected to the inner side of the detection box, a detection block is fixedly connected to the other end of the first spring, and the detection block is connected with the detection box in a sliding mode.
Preferably, positioner includes the support, the fixed cover outside is equipped with the support, the inboard bottom threaded connection of support has fixed screw thread axle, fixed screw thread axle bottom end fixedly connected with fixed block, the inboard bottom of fixed block is rotated through the pivot and is connected with the turning block, the turning block bottom is rotated and is connected with the locating plate, locating plate outside threaded connection has the screw.
Preferably, the top end of the support is rotatably connected with a positioning threaded shaft, the positioning threaded shaft penetrates through the support, a first clamping block is spirally connected to the outer side of the positioning threaded shaft, the first clamping block is slidably connected with the support, and the first clamping block is connected with the fixed sleeve in a clamping mode.
Preferably, the top end of the support is slidably connected with a pull rod, the pull rod penetrates through the support, the bottom end of the pull rod is fixedly connected with a second clamping block, the second clamping block is slidably connected with the support, the second clamping block is connected with the fixed sleeve in a clamping mode, a second spring is arranged on the outer side of the pull rod, and the second spring is fixedly connected with the second clamping block and the support.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the arrangement of the heat insulation inner pipe, the heat insulation sleeve pipe, the piston plate and the detection block, when the device is used, the heat insulation inner pipe and the heat insulation sleeve pipe are sleeved outside the strain sensor, then the rotary threaded shaft is rotated to be in spiral connection with the piston plate, inert gas is extracted through the gas inlet pipe, then the inert gas is discharged between the strain sensor and the heat insulation pipe through the gas outlet pipe, and the elastic force of the first spring on the detection block is matched, so that the device is well insulated, the influence of external temperature on the fiber bragg grating stress-strain sensor is avoided, and the precision of the fiber bragg grating stress-strain sensor in use is improved;
2. according to the invention, through the arrangement of the first clamping block, the fixed threaded shaft and the rotating block, when the device is used, the bracket and the fixed sleeve are connected together by matching with the screw connection of the positioning threaded shaft and the first clamping block, then the fixed threaded shaft is in screw connection with the bracket by rotating the fixed block, the rotating block and the fixed block are rotated by rotating the positioning plate, the device can be stably fixed according to the flatness of the fixed surface, and the normal installation and use of the fiber bragg grating stress-strain sensor are ensured;
3. according to the invention, through the second clamping block, the fixed threaded shaft and the rotating block, when the device is used, the pull rod is pulled firstly, the bracket and the fixed sleeve are connected together by matching the elasticity of the second spring to the second clamping block, then the fixed threaded shaft is in spiral connection with the bracket by rotating the fixed block, the rotating block and the fixed block are rotated by rotating the positioning plate, and the device can be stably fixed according to the flatness of the fixed surface, so that the normal installation and use of the fiber bragg grating stress-strain sensor are ensured.
Drawings
FIG. 1 is a schematic overall structure diagram of a first embodiment of the present invention;
FIG. 2 is a schematic overall structure diagram of a second embodiment of the present invention;
fig. 3 is a cross-sectional view of the inner frame according to the first embodiment of the present invention;
fig. 4 is a cross-sectional view of a second embodiment of the stent of the present invention;
FIG. 5 is a schematic sectional view of the fixing case of the present invention;
FIG. 6 is a schematic sectional view of the detection box of the present invention.
In the figure: 1-strain sensor, 2-blocking device, 201-heat insulation inner pipe, 202-heat insulation sleeve pipe, 203-sealing ring, 204-fixing box, 205-piston plate, 206-rotating threaded shaft, 207-fixing ring, 208-detecting box, 209-first spring, 210-detecting block, 211-air inlet pipe, 212-air outlet pipe, 3-positioning device, 301-bracket, 302-fixing threaded shaft, 303-fixing block, 304-rotating block, 305-positioning plate, 306-screw, 307-positioning threaded shaft, 308-first fixture block, 309-pull rod, 310-second fixture block, 311-second spring and 4-fixing sleeve.
Detailed Description
Example 1:
referring to fig. 1, fig. 3, fig. 5 and fig. 6, the present invention provides a technical solution:
a high-precision fiber grating stress-strain sensor comprises a strain sensor 1, a separation device 2 and a positioning device 3, wherein the separation device 2 is arranged on the outer side of the strain sensor 1, the separation device 2 comprises a heat insulation inner pipe 201, the heat insulation inner pipe 201 is arranged on the outer side of the strain sensor 1, a heat insulation sleeve 202 is connected to the outer side of the heat insulation inner pipe 201 in a sliding mode, an internal thread is arranged at one end of the inner side of the heat insulation sleeve 202, an external thread is arranged at one end of the outer side of a fixing sleeve 4, the heat insulation sleeve 202 is in spiral connection with the fixing sleeve 4, a sealing ring 203 is arranged at one end of the outer side of the heat insulation sleeve 202, the sealing ring 203 is in tight contact with the fixing sleeve 4, the sealing ring 203 is made of a rubber plate, the arrangement ensures the sealing performance between a heat insulation mechanism and the fixing sleeve 4, a fixing box 204 is fixedly connected to the top end of the heat insulation inner pipe 201, a piston plate 205 is connected to the inner side of the fixing box 204 in a sliding mode, a rotating threaded shaft 206 is connected to the inner side of the piston plate 205 in a spiral mode, the rotary threaded shaft 206 is rotatably connected with the fixed box 204, the outer side of the piston plate 205 is fixedly connected with a fixing ring 207, the fixing ring 207 is slidably connected with the fixed box 204, the fixing ring 207 is made of a rubber plate, the arrangement ensures the sealing performance between the piston plate 205 and the fixed box 204, the bottom end of the heat insulation inner tube 201 is communicated with a detection box 208 through a connecting tube, the inner side of the detection box 208 is fixedly connected with a first spring 209, the other end of the first spring 209 is fixedly connected with a detection block 210, and the detection block 210 is slidably connected with the detection box 208, the arrangement is convenient for determining whether the device leaks, the front end of the fixed box 204 is communicated with an air inlet tube 211, the bottom end of the fixed box 204 is communicated with an air outlet tube 212, the inner side of the air inlet tube 211 and the inner side of the air outlet tube 212 are both provided with a one-way valve, and the other end of the air outlet tube 212 is communicated with the heat insulation inner tube 201, the arrangement ensures the normal extraction and discharge of inert gas, the arrangement plays a role in heat preservation and heat insulation for the device, and avoids the influence of external temperature on the fiber bragg grating stress-strain sensor, thereby improving the precision of the fiber bragg grating stress-strain sensor in use, the left and right ends of the outer side of the strain sensor 1 are fixedly connected with the fixing sleeve 4, the outer side of the fixing sleeve 4 is provided with the positioning device 3, the positioning device 3 comprises a bracket 301, the outer side of the fixing sleeve 4 is provided with a bracket 301, the bottom end of the inner side of the bracket 301 is spirally connected with a fixed threaded shaft 302, the bottom end of the fixed threaded shaft 302 is fixedly connected with a fixing block 303, the bottom end of the inner side of the fixing block 303 is rotatably connected with a rotating block 304 through a rotating shaft, the bottom end of the rotating block 304 is rotatably connected with a positioning plate 305, the outer side of the positioning plate 305 is spirally connected with a screw 306, the top end of the bracket 301 is rotatably connected with a positioning threaded shaft 307, the positioning threaded shaft 307 penetrates through the bracket 301, the outer side of the positioning threaded shaft 307 is spirally connected with a first clamping block 308, and first fixture block 308 and support 301 sliding connection, first fixture block 308 is connected with fixed cover 4 block, and this kind of setting has made things convenient for being connected between positioning mechanism and the fixed cover 4, and this kind of setting can carry out stable fixed to the device according to the roughness of fixed surface to the normal installation that fiber grating stress strain transducer used has been guaranteed.
The working process is as follows: when the device is used, the heat insulation inner pipe 201 and the heat insulation sleeve 202 are sleeved on the outer side of the strain sensor 1, then the fixing sleeve 4 is bonded at the left end and the right end of the outer side of the strain sensor 1 through sealant, then the positioning threaded shaft 307 is rotated, the first clamping block 308 is clamped with the fixing sleeve 4, then the heat insulation sleeve 202 is rotated to be in threaded connection with the fixing sleeve 4, then the air inlet pipe 211 with the one-way valve is communicated with a container filled with inert gas, then the rotating threaded shaft 206 is rotated to be in threaded connection with the piston plate 205, so that the inert gas is pumped into the fixing box 204, then the rotating threaded shaft 206 is rotated reversely, the inert gas is pumped into the position between the strain sensor 1 and the heat insulation pipe through the air outlet pipe 212 with the one-way valve, and along with the continuous pumping of the pumped gas, the detection block 210 can continuously stretch the first spring 209 to slide with the detection box 208, when the detection block 210 cannot continuously slide downwards, the inert gas is stopped from being pressed into the device, then the positioning mechanism of the device is adjusted according to the flatness of the installation point of the device, at the moment, the fixing block 303 is rotated firstly, the fixing threaded shaft 302 is in threaded connection with the support 301, the height difference is adjusted, then the rotating block 304 is rotated according to the inclination of the installation surface, the rotating block is rotated with the fixing block 303, and then the device is fixed and used through the threaded connection of the screw 306 and the positioning plate 305, so that the operation is simple and convenient.
Example 2:
the same parts as those in embodiment 1 in embodiment 2 are not repeated, except that: referring to fig. 2, fig. 4, fig. 5 and fig. 6, the present invention provides a technical solution:
the positioning device 3 comprises a bracket 301, a bracket 301 is arranged outside the fixed sleeve 4, a fixed threaded shaft 302 is spirally connected with the bottom end of the inner side of the bracket 301, a fixed block 303 is fixedly connected with the bottom end of the fixed threaded shaft 302, a rotating block 304 is rotatably connected with the bottom end of the inner side of the fixed block 303 through a rotating shaft, a positioning plate 305 is rotatably connected with the bottom end of the rotating block 304, a screw 306 is spirally connected with the outer side of the positioning plate 305, a pull rod 309 is slidably connected with the top end of the bracket 301, the pull rod 309 penetrates through the bracket 301, a second clamping block 310 is fixedly connected with the bottom end of the pull rod 309, the second clamping block 310 is slidably connected with the bracket 301, the second clamping block 310 is connected with the fixed sleeve 4 in a clamping way, a second spring 311 is arranged outside the pull rod 309, the second spring 311 is fixedly connected with the second clamping block 310 and the bracket 301, the connection between the positioning mechanism and the fixed sleeve 4 is convenient, and the device can be stably fixed according to the flatness of a fixed surface, thereby ensuring the normal installation and use of the fiber bragg grating stress-strain sensor.
The working process is as follows: when the device is used, the fixing sleeve 4 is bonded at the left end and the right end of the outer side of the strain sensor 1 through sealant, then the pull rod 309 is pulled to enable the second fixture block 310 to compress the second spring 311, then the support 301 is sleeved on the outer side of the fixing sleeve 4 to enable the second fixture block 310 to be clamped with the fixing sleeve 4, after the clamping is completed, when the device is positioned and installed, the positioning mechanism is adjusted according to the flatness of a mounting point of the device firstly, the fixing block 303 is rotated firstly at the moment, the fixing threaded shaft 302 is in threaded connection with the support 301, so that the height difference is adjusted, then the rotating block 304 is rotated according to the inclination of the mounting surface, the rotating block is rotated with the fixing block 303, and then the device is fixed and used through the threaded connection of the screw 306 and the positioning plate 305, and the operation is simple and convenient.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. It should be noted that there are no specific structures but a few objective structures due to the limited character expressions, and that those skilled in the art may make various improvements, decorations or changes without departing from the principle of the invention or may combine the above technical features in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (8)
1. The utility model provides a fiber grating stress strain transducer of high accuracy, includes strain transducer (1), separation device (2) and positioner (3), its characterized in that: the outer side of the strain sensor (1) is provided with a blocking device (2), the blocking device (2) comprises a heat insulation inner pipe (201), a heat insulation inner pipe (201) is arranged on the outer side of the strain sensor (1), a heat insulation sleeve (202) is connected on the outer side of the heat insulation inner pipe (201) in a sliding manner, the top end of the heat insulation inner pipe (201) is fixedly connected with a fixed box (204), the inner side of the fixed box (204) is connected with a piston plate (205) in a sliding way, a rotary threaded shaft (206) is spirally connected to the inner side of the piston plate (205), the rotary threaded shaft (206) is rotationally connected with the fixed box (204), the front end of the fixed box (204) is communicated with an air inlet pipe (211), the bottom end of the fixed box (204) is communicated with an air outlet pipe (212), the left end and the right end of the outer side of the strain sensor (1) are fixedly connected with fixed sleeves (4), and positioning devices (3) are arranged on the outer side of the fixed sleeves (4).
2. The high-precision fiber grating stress-strain sensor according to claim 1, wherein: heat insulating sleeve (202) inboard one end is equipped with the internal thread, fixed cover (4) outside one end is equipped with the external screw thread, and heat insulating sleeve (202) and fixed cover (4) screwed connection, heat insulating sleeve (202) outside one end is equipped with sealing washer (203), and sealing washer (203) and fixed cover (4) in close contact with, sealing washer (203) are made by the panel of rubber material.
3. The high-precision fiber grating stress-strain sensor according to claim 1, wherein: piston plate (205) outside fixedly connected with solid fixed ring (207), and solid fixed ring (207) and fixed case (204) sliding connection, gu fixed ring (207) are made by the panel of rubber material.
4. The high-precision fiber grating stress-strain sensor according to claim 1, wherein: the inner side of the air inlet pipe (211) and the inner side of the air outlet pipe (212) are both provided with one-way valves, and the other end of the air outlet pipe (212) is communicated with the heat insulation inner pipe (201).
5. The high-precision fiber grating stress-strain sensor according to claim 1, wherein: the bottom end of the heat insulation inner pipe (201) is communicated with a detection box (208) through a connecting pipe, a first spring (209) is fixedly connected to the inner side of the detection box (208), a detection block (210) is fixedly connected to the other end of the first spring (209), and the detection block (210) is connected with the detection box (208) in a sliding mode.
6. The high-precision fiber grating stress-strain sensor according to claim 1, wherein: positioner (3) are including support (301), fixed cover (4) outside is equipped with support (301), the inboard bottom threaded connection of support (301) has fixed threaded shaft (302), fixed threaded shaft (302) bottom fixedly connected with fixed block (303), the inboard bottom of fixed block (303) is rotated through the pivot and is connected with turning block (304), turning block (304) bottom is rotated and is connected with locating plate (305), locating plate (305) outside threaded connection has screw (306).
7. The high precision fiber grating stress-strain sensor according to claim 6, wherein: the top end of the bracket (301) is rotatably connected with a positioning threaded shaft (307), the positioning threaded shaft (307) penetrates through the bracket (301), a first clamping block (308) is spirally connected to the outer side of the positioning threaded shaft (307), the first clamping block (308) is slidably connected with the bracket (301), and the first clamping block (308) is connected with the fixed sleeve (4) in a clamping mode.
8. The high precision fiber grating stress-strain sensor according to claim 6, wherein: support (301) top sliding connection has pull rod (309), and pull rod (309) run through support (301), pull rod (309) bottom fixedly connected with second fixture block (310), and second fixture block (310) and support (301) sliding connection, second fixture block (310) is connected with fixed cover (4) block, pull rod (309) outside is equipped with second spring (311), and second spring (311) and second fixture block (310) and support (301) fixed connection.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210141899.3A CN114485451A (en) | 2022-02-16 | 2022-02-16 | High-precision fiber grating stress-strain sensor |
| PCT/CN2022/094609 WO2023155319A1 (en) | 2022-02-16 | 2022-05-24 | High-precision fibre bragg grating stress and strain sensor |
| LU504704A LU504704B1 (en) | 2022-02-16 | 2022-05-24 | High-precision fiber grating stress-strain sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210141899.3A CN114485451A (en) | 2022-02-16 | 2022-02-16 | High-precision fiber grating stress-strain sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114485451A true CN114485451A (en) | 2022-05-13 |
Family
ID=81480231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210141899.3A Withdrawn CN114485451A (en) | 2022-02-16 | 2022-02-16 | High-precision fiber grating stress-strain sensor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN114485451A (en) |
| LU (1) | LU504704B1 (en) |
| WO (1) | WO2023155319A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155319A1 (en) * | 2022-02-16 | 2023-08-24 | 河北地质大学 | High-precision fibre bragg grating stress and strain sensor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000037914A2 (en) * | 1998-12-04 | 2000-06-29 | Cidra Corporation | Bragg grating pressure sensor |
| US6854327B2 (en) * | 2002-11-06 | 2005-02-15 | Shell Oil Company | Apparatus and method for monitoring compaction |
| CN201413119Y (en) * | 2009-04-03 | 2010-02-24 | 北京光科博冶科技有限责任公司 | Position detection device |
| CN111076853A (en) * | 2020-01-15 | 2020-04-28 | 天津师范大学 | Short-base sensor for monitoring ship structure stress and application method thereof |
| CN212747694U (en) * | 2020-08-14 | 2021-03-19 | 武汉雷施尔光电信息工程有限公司 | Fiber bragg grating stress-strain sensor for high-temperature environment |
| CN213481370U (en) * | 2020-12-08 | 2021-06-18 | 大连广川光电技术有限公司 | Fixing device for fiber grating sensor |
| CN113607195A (en) * | 2021-07-06 | 2021-11-05 | 河北地质大学 | Fiber grating stress-strain sensor for high-temperature environment |
| CN114485451A (en) * | 2022-02-16 | 2022-05-13 | 河北地质大学 | High-precision fiber grating stress-strain sensor |
-
2022
- 2022-02-16 CN CN202210141899.3A patent/CN114485451A/en not_active Withdrawn
- 2022-05-24 WO PCT/CN2022/094609 patent/WO2023155319A1/en unknown
- 2022-05-24 LU LU504704A patent/LU504704B1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155319A1 (en) * | 2022-02-16 | 2023-08-24 | 河北地质大学 | High-precision fibre bragg grating stress and strain sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023155319A1 (en) | 2023-08-24 |
| LU504704B1 (en) | 2023-09-12 |
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Application publication date: 20220513 |