LU504704B1 - High-precision fiber grating stress-strain sensor - Google Patents
High-precision fiber grating stress-strain sensor Download PDFInfo
- Publication number
- LU504704B1 LU504704B1 LU504704A LU504704A LU504704B1 LU 504704 B1 LU504704 B1 LU 504704B1 LU 504704 A LU504704 A LU 504704A LU 504704 A LU504704 A LU 504704A LU 504704 B1 LU504704 B1 LU 504704B1
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- Prior art keywords
- fixing
- strain sensor
- heat insulation
- blocks
- fiber grating
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- 239000000835 fiber Substances 0.000 title claims abstract description 41
- 238000009413 insulation Methods 0.000 claims abstract description 50
- 230000004888 barrier function Effects 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
The present application relates to the technical field of fiber grating stress-strain sensors, in particular to a high-precision fiber grating stress-strain sensor, the sensor comprising a strain sensor, barrier devices and positioning devices. An outer side of the strain sensor is provided with the barrier devices, the barrier devices comprises heat insulation inner pipes, an outer side of the strain sensor is provided with the heat insulation inner pipes. In the present application, through the provided heat insulation inner pipes, heat insulation sleeve pipes, piston plate and detecting blocks, when the device is used, sleeving the heat insulation inner pipes and the heat insulation sleeve pipes outside the strain sensor, and then rotating the rotating threaded shaft to spirally connect with the piston plates, extracting the inert gas through the inlet pipe, discharging the inert gas in between the strain sensor and the heat insulation pipes through the outlet pipe.
Description
DESCRIPTION LU504704
HIGH-PRECISION FIBER GRATING STRESS-STRAIN SENSOR
The present application relates to the technical field of fiber grating stress-strain sensors, in particular to a high-precision fiber grating stress-strain sensor.
The fiber grating sensor belongs to the fiber optic sensor, the sensing process based on fiber grating of the sensor is to obtain sensing information through the modulation of the fiber Bragg wavelength by external physical parameters, and it is a wavelength modulation fiber sensor.
These sensors mainly comprise fiber grating strain sensors, temperature sensors, acceleration sensors, displacement sensors, pressure sensors, flow sensors, liquid level sensors, etc. Fiber grating strain sensor is the most widely used and most mature fiber optic sensor in the engineering field. Strain directly affects the wavelength shift of fiber grating. When the working environment is good or the structure to be tested requires fine and small sensors, people use bare fiber gratings as strain sensors directly pasted on the surface of the structure to be tested or buried inside the structure. Because the fiber grating is relatively fragile, it is very easy to be damaged in a harsh working environment; it needs to be properly packaged before it can be used.
At present, the commonly used packaging methods mainly include substrate type, tube type, and tube-based clamping type at both ends. With the continuous development of society, there are more and more applications of fiber grating stress-strain sensors. However, some fiber grating stress-strain sensors used for geological disaster monitoring cannot well avoid the influence of external temperature on fiber grating stress-strain sensors, which affects the accuracy of fiber grating stress-strain sensors. In addition, when fixing it, it is not convenient to fix it stably according to the flatness of the fixing surface, thus affecting the normal installation and use of the fiber grating stress-strain sensor.
Summary of the Invention LU504704
The object of the present application is to provide a high-precision fiber grating stress-strain sensor to solve the problems raised in the above-mentioned background.
To achieve the above object, the present invention provides the following technical solutions: a high-precision fiber grating stress-strain sensor, comprising a strain sensor, barrier devices and positioning devices, an outer side of the strain sensor is provided with the barrier devices, the barrier devices comprises heat insulation inner pipes, an outer side of the strain sensor is provided with heat insulation inner pipes, heat insulation sleeve pipes are slidably connected to an outer side of the heat insulation inner pipe, a top end of the heat insulation inner pipe is fixedly connected to a fixing box, an inner side of the fixing box is slidably connected to a piston plate, an inner side of the piston plate is spirally connected to a rotating threaded shaft, and the rotating threaded shaft is rotationally connected to the fixing box, a front end of the fixing box is connected to an inlet pipe, a bottom end of the fixing box is connected to an outlet pipe, and left and right ends of the strain sensor are fixedly connected to fixing sleeves, and outer sides of the fixing sleeves are provided with positioning devices.
Preferably, inner ends of the heat insulation sleeve pipes are provided with internal threads, and outer ends of the fixing sleeves are provided with external threads, and the heat insulation sleeve pipes are spirally connected to the fixing sleeves, and outer ends of the heat insulation sleeve pipes are provided with sealing rings, and the sealing rings are in close contact to the fixing sleeves, and the sealing rings are made of a rubber plate.
Preferably, an outer side of the piston plate is fixedly connected to a fixing ring, and the fixing ring is slidably connected to a fixing box, the fixing ring is made of a rubber plate.
Preferably, one-way valves are respectively provided inside the inlet pipe and the outlet pipe, and another end of the outlet pipe communicates to the heat insulation inner pipes.
Preferably, bottom ends of the heat insulation inner pipes are connected to a detecting box through a connecting pipe, an inner side of the detecting box is fixedly connected to a first spring, another end of the first spring is fixedly connected to a detecting block, and the detecting block is slidably connected to the detecting box.
Preferably, the positioning devices comprise brackets, and the bracket are provided on outer sides of the fixing sleeves, inner bottom ends of brackets are screw-connected to fixing threaded shafts, bottom ends of the fixing threaded shafts are fixedly connected to fixing blocks, innkt/904704 bottom ends of the fixing blocks are connected to rotating blocks through rotating shafts, bottom ends of the rotating blocks are rotatably connected to positioning plates, and screws are screw-connected to outer sides of the positioning plates.
Preferably, top ends of the brackets are rotatably connected to positioning threaded shafts, and the positioning threaded shafts penetrates the brackets, and outer sides of the positioning threaded shafts are spirally connected to first blocks, and the first blocks are slidably connected to the brackets, and the first blocks are engaged and connected to the fixing sleeves.
Preferably, top ends of the brackets are slidably connected to pull rods, and the pull rods penetrate the brackets, bottom ends of the pull rods are fixedly connected to second blocks, and the second blocks are slidably connected to the brackets, the second blocks are engaged and connected to the fixing sleeves, and second springs are provided on outer sides of the pull rods, and the second springs are fixedly connected to the second blocks.
Compared with prior art, the beneficial effects of the present application are: 1. In the present application, through the provided heat insulation inner pipes, heat insulation sleeve pipes, piston plate and detecting blocks, when the device is used, sleeving the heat insulation inner pipes and the heat insulation sleeve pipes outside the strain sensor, and then rotating the rotating threaded shaft to spirally connect with the piston plates, extracting the inert gas through the inlet pipe, discharging the inert gas in between the strain sensor and the heat insulation pipes through the outlet pipe, and also by the elastic force of the first springs acting on the detecting blocks, heat preservation and heat insulation of the device is done properly, and the influence of external temperature on the fiber grating stress-strain sensor is avoided, thereby improving the accuracy of the fiber grating stress-strain sensor in use 2. In the present application, through the provided first blocks, the fixing threaded shafts and rotating blocks, when the device is used, the brackets and the fixing sleeves are connected together by the screw connection between the positioning threaded shafts and the first blocks,
Then, by rotating the fixing blocks, the fixing threaded shafts and the brackets are spirally connected, and the positioning plates are rotated to rotate the rotating blocks and the fixing blocks, and the device can be stably fixed according to the flatness of the fixed surface, thus ensuring the normal installation and use of the fiber grating stress-strain sensor.
3. In the present application, through the provided second blocks, the fixing threaded shafts artd/©04704 the rotating blocks, when the device is used, the pull rods are first pulled, and the brackets and the fixing sleeves are connected together by the elastic force of the second spring on the second blocks. Then, by rotating the fixing blocks, the fixing threaded shafts and the brackets are spirally connected, and the positioning plates are rotated to rotate the rotating blocks and the fixing blocks. The device can be stably fixed according to the flatness of the fixing surface, thereby ensuring the normal installation and use of the fiber grating stress-strain sensor.
Fig. 1 is the overall structure schematic view of a first embodiment of the present application;
Fig. 2 is the overall structure schematic view of a second embodiment of the present application; 3 is a schematic cross-sectional structural view of the inner stent according to the first embodiment of the present application;
Fig. 4 is a schematic cross-sectional structure view of an inner stent according to the second embodiment of the present application;
Fig. 5 is the sectional structure schematic view of a fixed box of the present application;
Fig. 6 is a schematic cross-sectional structure view of a detection box of the present application.
In the figures: 1. Strain sensor 2. Barrier device 201. Heat insulation inner pipe 202. heat insulation sleeve pipe 203. Sealing rings 204. Fixing box 205. Piston plate 206. Rotating threaded shaft 207. Fixing ring 208. Detecting box 209. First spring 210. Detecting block
211. Inlet pipe LU504704 212. 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 shafts 308. First block 309. Pull rod 310. Second block 311. Second spring; and 4. Fixing sleeve
Embodiment 1
Please refer to figure 1, figure 3, figure 5 and figure 6, the present application provides a technical solution: a high-precision fiber grating stress-strain sensor, comprising a strain sensor 1, barrier devices 2 and positioning devices 3, an outer side of the strain sensor 1 is provided with the barrier devices 2, the barrier devices 2 comprises heat insulation inner pipes 201, an outer side of the strain sensor 1 is provided with heat insulation inner pipes 201, heat insulation sleeve pipes 202 is slidably connected to outer sides of the heat insulation inner pipes 201, inner ends of the heat insulation sleeve pipes 202 are provided with internal threads, and outer ends of the fixing sleeves 4 are provided with external threads, and the heat insulation sleeve pipes 202 are spirally connected to the fixing sleeves 4, and outer ends of the heat insulation sleeve pipes 202 are provided with sealing rings 203, and the sealing rings 203 are in close contact to the fixirg/204704 sleeves 4, and the sealing rings 203 are made of a rubber plate.
The arrangement ensures the sealing between the heat insulation mechanism and the fixing sleeves.
Top ends of the heat insulation inner pipes 201 are fixedly connected to a fixing box 204, and an inner side of the fixing box 204 is slidably connected to a piston plate 205, and the rotating threaded shaft 206 is rotationally connected to the fixing box 204, a fixing ring 207 is fixedly connected to an outer side of the piston plate 205, and the fixing ring 207 is slidably connected to the fixing box 204, and the fixing ring 207 is made of a rubber plate.
The arrangement ensures the sealing between the piston plate 205 and the fixing box 204. Bottom ends of the heat insulation inner pipes 201 are connected to a detecting box 208 through a connecting pipe, an inner side of the detecting box 208 is fixedly connected to a first spring 209, another end of the first spring 209 is fixedly connected to a detecting block 210, and the detecting block 210 is slidably connected to the detecting box 208. The above arrangement makes it easy to determine if the device is leaking.
A front end of the fixing box 204 is connected to an inlet pipe 211, a bottom end of the fixing box 204 is connected to an outlet pipe 212, one-way valves are respectively provided inside the inlet pipe 211 and the outlet pipe 212, and another end of the outlet pipe 212 communicates to the heat insulation inner pipes 201. The above arrangement ensures the normal extraction and discharge of inert gas, plays a role of heat preservation and heat insulation for the device, and avoids the influence of external temperature on the fiber grating stress-strain sensor, thereby improving the accuracy of the fiber grating stress-strain sensor in use.
Left and right ends of the strain sensor 1 are fixedly connected to fixing sleeves 4, and outer sides of the fixing sleeves 4 are provided with positioning devices 3. The positioning devices 3 comprise brackets 301, and the brackets 301 are provided on outer sides of the fixing sleeves 4, inner bottom ends of brackets 301 are screw-connected to fixing threaded shafts 302, bottom ends of the fixing threaded shafts 302 are fixedly connected to fixing blocks 303, inner bottom ends of the fixing blocks 303 are connected to rotating blocks 304 through rotating shafts, bottom ends of the rotating blocks 304 are rotatably connected to positioning plates 305, screws 306 are screw-connected to outer sides of the positioning plates 305. Top ends of the brackets 301 are rotatably connected to positioning threaded shafts 307, and the positioning threaded shafts 307 penetrate the brackets 301, and outer sides of the positioning threaded shafts 307 are spirally connected to first blocks 308, and the first blocks 308 are slidably connected to the brackets 3047504704 the first blocks 308 are engaged and connected to the fixing sleeves 4. The above arrangement facilitates the connection between the positioning mechanism and the fixing sleeves 4, and can stably fix the device according to the flatness of the fixing surface, thereby ensuring the normal installation and use of the fiber grating stress-strain sensor.
Workflow: when using the device, put the heat insulation inner pipes 201 and the heat insulation sleeve pipes 202 on the outside of the strain sensor 1, and then glue the fixing sleeves 4 to the left and right ends of the outside of the strain sensor 1 with sealant. Then rotate the positioning threaded shafts 307, thereby the first blocks 308 and the fixing sleeves 4 are clamped together.
Then turn the heat insulating sleeve pipes 202, thereby they are screwed together with the fixing sleeves 4. Then the inlet pipes 211 with the check valve are communicated with the container containing the inert gas, and then the rotating threaded shaft 206 is screwed with the piston plate 205 to draw the inert gas into the fixing box 204. Then rotate the rotating threaded shaft 206 in the opposite direction, and press the inert gas into the position between the strain sensor 1 and the heat insulation pipe through the outlet pipe 212 with a one-way valve. As the suction gas is continuously pressed in, the detecting block 210 will continuously stretch the first springs 209 and slide with the detecting box 208. When the detection block 210 cannot continue to slide downward, it is sufficient to stop pressing the inert gas into the device. Then adjust the positioning mechanism according to the flatness of the installation point of the device. At this time, the fixing blocks 303 are rotated first, so that the fixing threaded shafts 302 and the brackets 301 are screwed together, so as to adjust the height difference. Then rotate the rotating blocks 304 according to the inclination of the installation surface, so that it rotates with the fixing blocks 303. Then, the device can be fixed and used through the screw connection between the screws 306 and the positioning plates 305, and the operation is simple and convenient.
Embodiment 2:
The same part as Embodiment 1 in Embodiment 2 will not be repeated, the difference is: please refer to Fig. 2, Fig. 4, Fig. 5 and Fig. 6, the present application provides a technical solution: the positioning devices 3 comprise brackets 301, and the brackets 301 are provided on outer sides of the fixing sleeves 4, inner bottom ends of brackets 301 are screw-connected to fixing threaded shafts 302, bottom ends of the fixing threaded shafts 302 are fixedly connected to fixing blocks 303, inner bottom ends of the fixing blocks 303 are connected to rotating blocks 364/504704 through rotating shafts, bottom ends of the rotating blocks 304 are rotatably connected to positioning plates 305, screws 306 are screw-connected to outer sides of the positioning plates 305. Top ends of the brackets 301 are slidably connected to pull rods 309, and the pull rods 309 penetrate the brackets 301, bottom ends of the pull rods 309 are fixedly connected to second blocks 310, and the second blocks 310 are slidably connected to the brackets 301, the second blocks 310 are engaged and connected to the fixing sleeves 4, and second springs 311 are provided on outer sides of the pull rods 309, and the second springs 311 are fixedly connected to the second blocks 310. The above arrangement facilitates the connection between the positioning mechanism and the fixing sleeves 4. The above arrangement can stably fix the device according to the flatness of the fixing surface, thereby ensuring the normal installation and use of the fiber grating stress and strain sensor.
Workflow: when using the device, bond the fixing sleeves 4 to the left and right ends of the outer side of the strain sensor 1 with a sealant, then pull the pull rods 309 to make the second blocks 310 compress the second springs 311, and then put the brackets 301 on the outer sides of the fixed sleeves 4 to make the second blocks 310 clamped with the fixing sleeves 4. After clamping, when positioning and installing the device, first adjust the positioning mechanism according to the flatness of the installation point of the device. At this time, the fixing blocks 303 are rotated first, so that the fixing threaded shafts 302 and the brackets 301 are screwed together, so as to adjust the height difference. Then rotate the rotating blocks 304 according to the inclination of the installation surface to make it rotate with the fixing blocks 303, and then fix the device for use through the screw connection between the screws 306 and the positioning plates 305, and the operation is simple and convenient.
In the present application, specific embodiments are used to illustrate the principle and implementation of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. The above are only preferred embodiments of the present application. It should be pointed out that due to the limitation of literal expression, there are objectively unlimited specific structures. For those of ordinary skill in the art, without departing from the principle of the present application, several improvements, modifications or changes can also be made, and the above-mentioned technical features can also be combined in an appropriate manner; these improvements, modifications, b}/904704 combinations, or the idea and technical solution of the present application are directly applied to other occasions without improvement, all should be regarded as the protection scope of the present application.
Claims (8)
1. A high-precision fiber grating stress-strain sensor, comprising a strain sensor (1), barrier devices (2) and positioning devices (3), wherein an outer side of the strain sensor (1) is provided with the barrier devices (2), the barrier devices (2) comprises heat insulation inner pipes (201), an outer side of the strain sensor (1) is provided with heat insulation inner pipes (201), heat insulation sleeve pipes (202) are slidably connected to outer sides of the heat insulation inner pipes (201), top ends of the heat insulation inner pipes (201) are fixedly connected to a fixing box (204), an inner side of the fixing box (204) is slidably connected to a piston plate (205), an inner side of the piston plate (205) is spirally connected to a rotating threaded shaft (206), and the rotating threaded shaft (206) is rotationally connected to the fixing box (204), a front end of the fixing box (204) is connected to an inlet pipe (211), a bottom end of the fixing box (204) is connected to an outlet pipe (212), and left and right ends of the strain sensor (1) are fixedly connected to fixing sleeves (4), and outer sides of the fixing sleeves (4) are provided with positioning devices (3).
2. The high-precision fiber grating stress-strain sensor according to claim 1, wherein inner ends of the heat insulation sleeve pipes (202) are provided with internal threads, and outer ends of the fixing sleeves (4) are provided with external threads, and the heat insulation sleeve pipes (202) are spirally connected to the fixing sleeves (4), and outer ends of the heat insulation sleeve pipes (202) are provided with sealing rings (203), and the sealing rings (203) are in close contact to the fixing sleeves (4), and the sealing rings (203) are made of a rubber plate.
3.The high-precision fiber grating stress-strain sensor according to claim 1, wherein a fixing ring (207) 1s fixedly connected to an outer side of the piston plate (205), and the fixing ring (207) is slidably connected to the fixing box (204), and the fixing ring (207) is made of a rubber plate.
4. The high-precision fiber grating stress-strain sensor according to claim 1, wherein one-way valves are respectively provided inside the inlet pipe (211) and the outlet pipe (212), and another end of the outlet pipe (212) communicates to the heat insulation inner pipes (201).
5. The high-precision fiber grating stress-strain sensor according to claim 1, wherein bottom ends of the heat insulation inner pipes (201) are connected to a detecting box (208) through a connecting pipe, an inner side of the detecting box (208) is fixedly connected to a first spring (209), another end of the first spring (209) is fixedly connected to a detecting block (210), and the detecting block (210) is slidably connected to the detecting box (208). LU504704
6. The high-precision fiber grating stress-strain sensor according to claim 1, wherein the positioning devices (3) comprise brackets (301), and the brackets (301) are provided on outer sides of the fixing sleeves (4), inner bottom ends of brackets (301) are screw-connected to fixing threaded shafts (302), bottom ends of the fixing threaded shafts (302) are fixedly connected to fixing blocks (303), inner bottom ends of the fixing blocks (303) are connected to rotating blocks (304) through rotating shafts, bottom ends of the rotating blocks (304) are rotatably connected to positioning plates (305), and screws (306) are screw-connected to outer sides of the positioning plates (305).
7. The high-precision fiber grating stress-strain sensor according to claim 6, wherein top ends of the brackets (301) are rotatably connected to positioning threaded shafts (307), and the positioning threaded shafts (307) penetrates the brackets (301), and outer sides of the positioning threaded shafts (307) are spirally connected to first blocks (308), and the first blocks (308) are slidably connected to the brackets (301), the first blocks (308) are engaged with and connected to the fixing sleeves (4).
8. The high-precision fiber grating stress-strain sensor according to claim 6, wherein top ends of the brackets (301) are slidably connected to pull rods (309), and the pull rods (309) penetrate the brackets (301), bottom ends of the pull rods (309) are fixedly connected to second blocks (310), and the second blocks (310) are slidably connected to the brackets (301), the second blocks (310) are engaged with and connected to the fixing sleeves (4), and second springs (311) are provided on outer sides of the pull rods (309), and the second springs (311) are fixedly connected to the second blocks (310).
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 |
|---|---|
| LU504704B1 true LU504704B1 (en) | 2023-09-12 |
Family
ID=81480231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU504704A LU504704B1 (en) | 2022-02-16 | 2022-05-24 | High-precision fiber grating stress-strain sensor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN114485451A (en) |
| LU (1) | LU504704B1 (en) |
| WO (1) | WO2023155319A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485451A (en) * | 2022-02-16 | 2022-05-13 | 河北地质大学 | High-precision fiber grating stress-strain sensor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1137920B1 (en) * | 1998-12-04 | 2005-02-16 | Weatherford/Lamb, Inc. | 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 LU LU504704A patent/LU504704B1/en active IP Right Grant
- 2022-05-24 WO PCT/CN2022/094609 patent/WO2023155319A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN114485451A (en) | 2022-05-13 |
| WO2023155319A1 (en) | 2023-08-24 |
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| FG | Patent granted |
Effective date: 20230912 |