CN202582500U - Optical fiber grating strain transducer capable of eliminating external force stretching impact - Google Patents
Optical fiber grating strain transducer capable of eliminating external force stretching impact Download PDFInfo
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- CN202582500U CN202582500U CN 201220195987 CN201220195987U CN202582500U CN 202582500 U CN202582500 U CN 202582500U CN 201220195987 CN201220195987 CN 201220195987 CN 201220195987 U CN201220195987 U CN 201220195987U CN 202582500 U CN202582500 U CN 202582500U
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- strain
- optical fiber
- fiber grating
- fiber
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Abstract
The utility model discloses an optical fiber grating strain transducer capable of eliminating an external force stretching impact. The optical fiber grating strain transducer capable of eliminating the external force stretching impact comprises a strain bottom plate. An optical fiber grating is installed on the strain bottom plate. Tail optical fibers of two ends of the optical fiber grating are packaged through glass solders. The two end tail optical fiber positions of the optical fiber grating are sleeved with protective loose tubes. Inner ends of the loose tubes abut against the corresponding glass solders. Outer ends of the loose tubes penetrate into optical cables, and the optical cables are fixed on the strain bottom plate. The optical fiber grating tail optical fibers use the non-glue packaging of the glass solders, and can eliminate the external force stretching impact; and at the same time, the transducer can effectively transmit the strain capacity of a measured object, and the operation steps are simple, so the optical fiber grating strain transducer capable of eliminating the external force stretching impact is suitable for mass production.
Description
Technical field
The utility model relates to sensor technical field, relates in particular to a kind of fiber Bragg grating strain sensor of eliminating the force-extension influence.
Background technology
At present more common strain transducer is a resistance strain type sensor, its shortcoming be to big strain output signal a little less than, and data instability, temperature influence is very big.Fiber Bragg grating strain sensor have the electromagnetic interference (EMI) of not receiving, highly sensitive, dynamic range is big, signal transmission attenuation is little, transmission is passive, reliability is high, cost is low, be convenient to advantages such as cascade; Use so fiber Bragg grating strain sensor has been obtained widely, especially in the tunnel, fields such as subway, electric power, oil well.
When making fiber Bragg grating strain sensor, because naked fiber grating tension, fracture resistance are poor, be necessary so fiber grating is encapsulated, especially under the situation of practical applications, more should carry out packaging protection to fiber grating.Traditional fiber grating adopts glue fixing, because glue is soft, the strain slippages was big when object produced small strain on the one hand for this method for packing, in addition cause detecting less than; Can cause initial wave length shift or change of sensitivity after the strain transducer of glue encapsulation is influenced by bigger temperature or external force on the other hand.
The utility model content
When the purpose of the utility model is to solve the traditional fiber grating strain transducer and is prone to be stretched optical cable or stretching optical fiber with the mucilage sealing dressing; Cause non-strain induction to cause the problem of centre wavelength drift; A kind of fiber Bragg grating strain sensor of eliminating the force-extension influence is provided; It utilizes glass solder that fiber grating is encapsulated, and can effectively transmit the measured object dependent variable.
For reaching this purpose, the utility model adopts following technical scheme:
A kind of fiber Bragg grating strain sensor of eliminating the force-extension influence; Comprise the strain egative film, on the said strain egative film fiber grating is installed, the two ends tail optical fiber of said fiber grating all encapsulates through glass solder; Tail optical fiber place, said fiber grating two ends all is with protection and uses loose sleeve pipe; Said loose sleeve pipe is inner all to lean with corresponding glass solder, all penetrate optical cable in said loose sleeve pipe outer end, and said optical cable is fixed on the said strain egative film.
Preferably, the place scribbles ultraviolet glue at said glass solder, and is heating and curing through uviol lamp.
Preferably, said glass solder is positioned at the right ends of said fiber grating, and the weld interval of two glass solders distance is 2～6mm.
Preferably, said optical cable all is fixed on the said strain egative film through stator and securing member.
Further, the weld interval of described two glass solders distance is 3～5mm.
Further, said strain egative film centre position has stria, and said fiber grating and tail optical fiber thereof all are positioned at said stria.
The beneficial effect of the utility model: the fiber grating tail optical fiber utilizes the glass solder encapsulation, eliminates the force-extension influence, and this sensor can effectively transmit the measured object dependent variable simultaneously, and operation steps simply is well suited for mass production.
Description of drawings
Fig. 1 is the structural representation of the described fiber Bragg grating strain sensor of embodiment.
Among the figure:
1, strain egative film; 2, fiber grating; 3, glass solder; 4, loose sleeve pipe; 5, optical cable; 6, stator; 7, tail optical fiber.
Embodiment
Further specify the technical scheme of the utility model below in conjunction with accompanying drawing and through embodiment.
As shown in Figure 1, in present embodiment, the described fiber Bragg grating strain sensor of the utility model; Comprise strain egative film 1, fiber grating 2, strain egative film 1 centre position has stria, and fiber grating 2 and tail optical fiber 7 thereof all are installed in the said stria; All through glass solder 3 encapsulation, glass solder 3 is positioned at the right ends of fiber grating 2 to the two ends tail optical fiber 7 of fiber grating, and the weld interval of two glass solders distance is 3～5mm; And scribble ultraviolet glue at the glass solder place; Be heating and curing through uviol lamp, remaining tail optical fiber all is inserted in protection with in the loose sleeve pipe 4, and loose sleeve pipe 4 the inners are all leant with corresponding glass solder 3; All penetrate optical cable 5 in loose sleeve pipe 4 outer ends, and optical cable 5 all is fixed in strain egative film 1 corresponding position through stator 6 and securing member.
The concrete operations step: (a) fiber grating 2 is penetrated middle having in the stria strain egative film 1, fiber grating 2 and tail optical fiber 7 are placed in the stria, make fiber grating 2 be positioned at strain egative film middle part; (b) glass solder 3 is placed on fiber grating 2 left position places, heating makes its fusing then, compresses into liquid glass solder 3 inside to tail optical fiber 7, stops heating and lets its natural cooling; (c) be positioned over fiber grating 2 right end position places to glass solder 3, heating makes its fusing then, compresses into tail optical fiber 7 the liquid glass scolder and applies certain prestress, stops heating and lets its natural cooling; (d) drip to the tail optical fiber coat place that glass solder 3 burns out to ultraviolet glue, and make its natural cooling after 25 minutes with ultra violet lamp; (e) pack into loose sleeve pipe 4 in the grating tail optical fiber 7 up to pushing up glass solder, be inserted in optical cable 5 again; (f) be screwed to the corresponding position of strain egative film with key screw stator 6 and compress optical cable 5.
More than combine specific embodiment to describe the know-why of the utility model.These are described just in order to explain the principle of the utility model, and can not be interpreted as the restriction to the utility model protection domain by any way.Based on the explanation here, those skilled in the art need not pay other embodiment that performing creative labour can be associated the utility model, and these modes all will fall within the protection domain of the utility model.
Claims (6)
1. can eliminate the fiber Bragg grating strain sensor that force-extension influences for one kind; It is characterized in that; Comprise strain egative film (1), fiber grating (2) is installed on the said strain egative film (1), the two ends tail optical fiber of said fiber grating (2) all encapsulates through glass solder (3); Tail optical fiber place, said fiber grating (2) two ends all is with protection with loose sleeve pipe (4); Said loose sleeve pipe (4) is inner all to lean with corresponding glass solder (3), all penetrate optical cable (5) in said loose sleeve pipe (4) outer end, and said optical cable (5) is fixed on the said strain egative film (1).
2. a kind of fiber Bragg grating strain sensor of eliminating the force-extension influence according to claim 1 is characterized in that, locates to scribble ultraviolet glue at said glass solder (3), and is heating and curing through uviol lamp.
3. a kind of fiber Bragg grating strain sensor of eliminating the force-extension influence according to claim 1 is characterized in that said glass solder (3) is positioned at the right ends of said fiber grating (2), and the weld interval of two glass solders distance is 2～6mm.
4. a kind of fiber Bragg grating strain sensor of eliminating the force-extension influence according to claim 1 is characterized in that said optical cable (5) all is fixed on the said strain egative film (1) through stator (6) and securing member.
5. a kind of fiber Bragg grating strain sensor of eliminating the force-extension influence according to claim 3 is characterized in that, the weld interval distance of described two glass solders (3) is 3～5mm.
6. according to the arbitrary described a kind of fiber Bragg grating strain sensor of eliminating the force-extension influence of claim 1～5, it is characterized in that said strain egative film (1) centre position has stria, said fiber grating (2) and tail optical fiber thereof all are positioned at said stria.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220195987 CN202582500U (en) | 2012-05-03 | 2012-05-03 | Optical fiber grating strain transducer capable of eliminating external force stretching impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220195987 CN202582500U (en) | 2012-05-03 | 2012-05-03 | Optical fiber grating strain transducer capable of eliminating external force stretching impact |
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| Publication Number | Publication Date |
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| CN202582500U true CN202582500U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220195987 Expired - Lifetime CN202582500U (en) | 2012-05-03 | 2012-05-03 | Optical fiber grating strain transducer capable of eliminating external force stretching impact |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466234A (en) * | 2013-09-06 | 2013-12-25 | 长城信息产业股份有限公司 | Sensor device for utilizing fiber bragg grating (FBG) to measure oil weight of oil tank |
| CN103867793A (en) * | 2014-03-20 | 2014-06-18 | 大连理工大学 | Controllable-pretension FBG (Fiber Bragg Grating) strain hoop gripper system |
| CN106482760A (en) * | 2015-10-14 | 2017-03-08 | 北京信息科技大学 | A kind of system of all-metal packaged fiber grating strain transducer |
| CN106595510A (en) * | 2017-01-06 | 2017-04-26 | 成都翰光科技有限公司 | Strain gauge and fiber grating strain sensor |
| CN106840227A (en) * | 2017-03-02 | 2017-06-13 | 广西大学 | It is a kind of can Fast Installation and the fiber-optic grating sensor being connected and preparation method thereof |
| CN107300365A (en) * | 2017-08-15 | 2017-10-27 | 浙江智远光电科技有限公司 | High precision and high sensitivity fiber Bragg grating strain sensor |
| CN108361421A (en) * | 2017-01-26 | 2018-08-03 | 日东工器株式会社 | Check-valves |
| CN109029512A (en) * | 2018-06-29 | 2018-12-18 | 中国船舶重工集团公司第七〇五研究所 | A kind of fiber-optic grating sensor glass solder package system |
-
2012
- 2012-05-03 CN CN 201220195987 patent/CN202582500U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466234A (en) * | 2013-09-06 | 2013-12-25 | 长城信息产业股份有限公司 | Sensor device for utilizing fiber bragg grating (FBG) to measure oil weight of oil tank |
| CN103466234B (en) * | 2013-09-06 | 2015-07-08 | 长城信息产业股份有限公司 | Sensor device for utilizing fiber bragg grating (FBG) to measure oil weight of oil tank |
| CN103867793A (en) * | 2014-03-20 | 2014-06-18 | 大连理工大学 | Controllable-pretension FBG (Fiber Bragg Grating) strain hoop gripper system |
| CN103867793B (en) * | 2014-03-20 | 2015-10-28 | 大连理工大学 | A kind of controlled pretensioned fiber grating strain hoop clamp device system |
| CN106482760A (en) * | 2015-10-14 | 2017-03-08 | 北京信息科技大学 | A kind of system of all-metal packaged fiber grating strain transducer |
| CN106482760B (en) * | 2015-10-14 | 2018-09-21 | 北京信息科技大学 | A kind of system of all-metal packaged fiber grating strain transducer |
| CN106595510A (en) * | 2017-01-06 | 2017-04-26 | 成都翰光科技有限公司 | Strain gauge and fiber grating strain sensor |
| CN108361421A (en) * | 2017-01-26 | 2018-08-03 | 日东工器株式会社 | Check-valves |
| CN108361421B (en) * | 2017-01-26 | 2020-01-10 | 日东工器株式会社 | Check valve |
| CN106840227A (en) * | 2017-03-02 | 2017-06-13 | 广西大学 | It is a kind of can Fast Installation and the fiber-optic grating sensor being connected and preparation method thereof |
| CN107300365A (en) * | 2017-08-15 | 2017-10-27 | 浙江智远光电科技有限公司 | High precision and high sensitivity fiber Bragg grating strain sensor |
| CN109029512A (en) * | 2018-06-29 | 2018-12-18 | 中国船舶重工集团公司第七〇五研究所 | A kind of fiber-optic grating sensor glass solder package system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160914 Address after: 610017 Sichuan City, Chengdu province high tech Zone (West), No. 77 Tianmu Road, poly champagne international, building 2, unit 727-728, No. 1, No. Patentee after: Sichuan Light Technology Co., Ltd. Address before: 214135 Jiangsu New District of Wuxi City Linghu Road No. 97 Pacific Garden of University Science and Technology Park industrial area five floor building D Patentee before: Wuxi Chengdian Optical Fiber Sensor Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |
|
| CX01 | Expiry of patent term |