CN202074949U - Adjustable large displacement measure optical fiber grating sensor apparatus - Google Patents
Adjustable large displacement measure optical fiber grating sensor apparatus Download PDFInfo
- Publication number
- CN202074949U CN202074949U CN2011201552078U CN201120155207U CN202074949U CN 202074949 U CN202074949 U CN 202074949U CN 2011201552078 U CN2011201552078 U CN 2011201552078U CN 201120155207 U CN201120155207 U CN 201120155207U CN 202074949 U CN202074949 U CN 202074949U
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- optical fiber
- grating sensor
- fiber grating
- cylindrical shell
- cylinder body
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Abstract
The utility model relates to an adjustable large displacement measure optical fiber grating sensor apparatus, including a cylinder body. One end of the cylinder body is fixedly connected with a step-shaped screwed plug through a thread, and the other end is inserted into a T-shaped sealing head; the step-shaped screwed plug positioned in the cylinder body is provided with an optical fiber grating sensor; one end of the optical fiber grating sensor is leaded out by an optical fiber through a small hole on the screwed plug, and the other end is output by an optical fiber through the opening on the cylinder body; the screwed plug end positioned in the cylinder is connected with one end of an elastic object; and the other end of the elastic is contacted with a rigid member positioned at the end of the T-shaped sealing head in the cylinder body. The utility model is embedded in a bridge, a building or an underground engineering which is to be measured; when displacement of an object happens, the sealing head end moves inward or outward, the spring is drawn, simultaneously large displacement is generated, the force bearing of the step-shaped screwed plug is changed, thus microstrain of the optical fiber grating is caused, and the optical fiber grating sensor transmits the sensed data by an optical fiber to an external data processing apparatus for process.
Description
Technical field
The utility model relates to a kind of sensor device, the especially a kind of large displacement measurement adjusted fiber-optic grating sensor device that is applicable to fields such as bridge, buildings, underground works.
Background technology
Strain stress survey sensor between 2 of the present structure inside or the face of measurement is varied, but most machineries or electromagnetic sensor are point measurements, signal drift is serious, signal long-distance transmissions difficulty, inconvenient networking, poor to the antijamming capability of site environment simultaneously, need often zeroing and correction.Actual science of bridge building, large-scale underground, civil engineering work, the health detection of large-scale Structural Engineering mainly is that its structural strain of monitoring (displacement) changes, its change in displacement reaches several millimeters, and is a slow change procedure, and traditional electric transducer has not had advantage.The small strain of fiber-optic grating sensor energy measurement, but to big millimetre-sized strain or displacement, be difficult to realize.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, easy to use, measure and can adjust large displacement measurement fiber-optic grating sensor device accurately.
For achieving the above object, the utility model adopts following technical proposals:
A kind of large displacement measurement fiber-optic grating sensor device of adjusting, comprise a cylindrical shell, described cylindrical shell one end is fixed with a step-like plug by screw thread, the cylindrical shell other end inserts a T shape end socket, the step-like plug that is positioned at cylindrical shell is provided with fiber-optic grating sensor, fiber-optic grating sensor one end is derived by the aperture of optical fiber on described plug, and the other end is by the opening output of optical fiber on cylindrical shell, and the plug end that is positioned at cylindrical shell links to each other with elastic body one end; The elastic body other end be positioned at cylindrical shell T shape end socket end on the rigid member that is provided with contact.
Described elastic body is a spring.
Plug in the utility model adopts the big elastic body of elasticity coefficient, the microstrain that stressed generation is very little.
The utility model is imbedded in bridge that need to measure, buildings, the underground works, when object is subjected to displacement, seal head end moves in or out, spring or weak elastomeric the stretching, producing big displacement simultaneously changes, cause the stressed of step-like plug (elastic body that elasticity coefficient is big), microstrain changes, thereby cause the fiber grating generation microstrain on this elastic body that is laid in, fiber-optic grating sensor is handled by Optical Fiber Transmission sensed data in the data processing equipment of outside.
The utility model novel structure, simple, easy to use, measure accurately.Network in conjunction with Fibre Optical Sensor is multiplexing, can realize large tracts of land, long distance, the large displacement measurement of multiple spot, and can realize every displacement measurement installation and use and adjust.
Description of drawings
Fig. 1 is the utility model structural representation;
1. cylindrical shells wherein, 2. plug, 3.T shape end socket, 4. fiber-optic grating sensor, 5. optical fiber, 6. aperture, 7. opening, 8. elastic body, 9. rigid member.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, a kind of large displacement measurement fiber-optic grating sensor device of adjusting comprises a cylindrical shell 1, and described cylindrical shell 1 one ends are fixed with a step-like plug 2 by screw thread, and plug 2 adopts the big elastic body of elasticity coefficient, the microstrain that stressed generation is very little.Cylindrical shell 1 other end inserts a T shape end socket 3, the step-like plug 2 that is positioned at cylindrical shell is provided with fiber-optic grating sensor 4, fiber-optic grating sensor 4 one ends are derived by the aperture 6 of optical fiber 5 on step-like plug 2, the other end is by opening 7 outputs of optical fiber 5 on cylindrical shell 1, and plug 2 ends that are positioned at cylindrical shell 1 link to each other with elastic body 8 one ends; Elastic body 8 other ends contact with the rigid members 9 that are positioned at the 3 terminal last settings of cylindrical shell 1 T shape end socket.Described elastic body 8 is a spring.
During use, the utility model is imbedded in bridge that need to measure, buildings, the underground works, when the object of needs measurement is subjected to displacement, seal head end moves in or out, the elastic force of spring changes, cause that the stressed of step-like plug 2 changes, fiber-optic grating sensor 4 is transferred to sensed data in the outside data processing equipment by optical fiber 5 and handles.
Claims (2)
1. can adjust large displacement measurement fiber-optic grating sensor device for one kind, it is characterized in that: comprise a cylindrical shell, described cylindrical shell one end is fixed with a step-like plug by screw thread, the cylindrical shell other end inserts a T shape end socket, the step-like plug that is positioned at cylindrical shell is provided with fiber-optic grating sensor, fiber-optic grating sensor one end is derived by the aperture of optical fiber on described plug, and the other end is by the opening output of optical fiber on cylindrical shell, and the plug end that is positioned at cylindrical shell links to each other with elastic body one end; The elastic body other end be positioned at cylindrical shell T shape end socket end on the rigid member that is provided with contact.
2. the large displacement measurement fiber-optic grating sensor device of adjusting according to claim 1, it is characterized in that: described elastic body is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201552078U CN202074949U (en) | 2011-05-16 | 2011-05-16 | Adjustable large displacement measure optical fiber grating sensor apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201552078U CN202074949U (en) | 2011-05-16 | 2011-05-16 | Adjustable large displacement measure optical fiber grating sensor apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202074949U true CN202074949U (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201552078U Expired - Fee Related CN202074949U (en) | 2011-05-16 | 2011-05-16 | Adjustable large displacement measure optical fiber grating sensor apparatus |
Country Status (1)
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| CN (1) | CN202074949U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944214A (en) * | 2012-11-26 | 2013-02-27 | 昆山北极光电子科技有限公司 | Elastic deformation measuring method |
| EP2698610A1 (en) * | 2012-08-17 | 2014-02-19 | Siemens Aktiengesellschaft | Displacement sensor, in particular for use in a subsea device |
| CN104006744A (en) * | 2014-04-29 | 2014-08-27 | 昆明理工大学 | Side slop optical fiber Bragg optical grating multi-point displacement sensor and using method thereof |
| US9217629B2 (en) | 2012-08-17 | 2015-12-22 | Siemens Aktiengesellschaft | Displacement sensor, in particular for use in a subsea device |
| CN105403333A (en) * | 2015-12-10 | 2016-03-16 | 中国电子科技集团公司第四十八研究所 | Bridge bearer elastomer loading force measurement method and bearer elastomer |
| CN108151689A (en) * | 2017-11-20 | 2018-06-12 | 中国建筑股份有限公司 | High accuracy displacement sensor |
| CN113074760A (en) * | 2021-03-31 | 2021-07-06 | 西安石油大学 | Micro-strain fiber grating sensor, stress measurement system and working method thereof |
-
2011
- 2011-05-16 CN CN2011201552078U patent/CN202074949U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2698610A1 (en) * | 2012-08-17 | 2014-02-19 | Siemens Aktiengesellschaft | Displacement sensor, in particular for use in a subsea device |
| US9207068B2 (en) | 2012-08-17 | 2015-12-08 | Siemens Aktiengesellschaft | Displacement sensor, in particular for use in a subsea device |
| US9217629B2 (en) | 2012-08-17 | 2015-12-22 | Siemens Aktiengesellschaft | Displacement sensor, in particular for use in a subsea device |
| CN102944214A (en) * | 2012-11-26 | 2013-02-27 | 昆山北极光电子科技有限公司 | Elastic deformation measuring method |
| CN104006744A (en) * | 2014-04-29 | 2014-08-27 | 昆明理工大学 | Side slop optical fiber Bragg optical grating multi-point displacement sensor and using method thereof |
| CN104006744B (en) * | 2014-04-29 | 2016-09-21 | 昆明理工大学 | A kind of side slope optical fiber Bragg raster multi-point displacement sensor and using method thereof |
| CN105403333A (en) * | 2015-12-10 | 2016-03-16 | 中国电子科技集团公司第四十八研究所 | Bridge bearer elastomer loading force measurement method and bearer elastomer |
| CN105403333B (en) * | 2015-12-10 | 2019-06-11 | 中国电子科技集团公司第四十八研究所 | Bridge pad elastomer load force measuring method and support elastomer |
| CN108151689A (en) * | 2017-11-20 | 2018-06-12 | 中国建筑股份有限公司 | High accuracy displacement sensor |
| CN113074760A (en) * | 2021-03-31 | 2021-07-06 | 西安石油大学 | Micro-strain fiber grating sensor, stress measurement system and working method thereof |
| CN113074760B (en) * | 2021-03-31 | 2022-07-19 | 西安石油大学 | Micro-strain fiber grating sensor, stress measurement system and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20120516 |