CN103512687A - Optical fiber reinforcement meter - Google Patents
Optical fiber reinforcement meter Download PDFInfo
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- CN103512687A CN103512687A CN201310495169.4A CN201310495169A CN103512687A CN 103512687 A CN103512687 A CN 103512687A CN 201310495169 A CN201310495169 A CN 201310495169A CN 103512687 A CN103512687 A CN 103512687A
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- optical fiber
- reinforcing rib
- fiber grating
- fiber
- rib meter
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Abstract
The invention discloses an optical fiber reinforcement meter, and belongs to the technical field of measurement. The optical fiber reinforcement meter comprises an optical fiber grate sensitive component, a sensing sleeve and reinforcement connecting rods, wherein the optical fiber grate sensitive component is fixed in the sensing sleeve; the reinforcement connecting rods are connected to the two ends of the sensing sleeve; the optical fiber grate sensitive component comprises an optical fiber grate, an elastomer base and a protection housing; the optical fiber grate is tensioned and fixed in the elastomer base; the elastomer base is packed in the protection housing; signal transmission fibers are arranged at two ends of the optical fiber grate, extend out of the two ends of the optical fiber grate sensitive component, and penetrate from the sensing sleeve. The optical fiber reinforcement meter is good in linearity, high in sensitivity, high in precision, and strong in electromagnetic interference resistance, has a relatively good protection structure, and is suitable for being used in severe environments.
Description
Technical field
The invention belongs to field of measuring technique, particularly relate to a kind of optical fiber type reinforcing rib meter using in fields such as Hydraulic and Hydro-Power Engineering, traffic engineering, municipal administrations.
Background technology
As everyone knows, reinforcing rib meter is for measuring the surveying instrument of the suffered stress of engineering works concrete reinforcement, or as anchor stress meter, is embedded in the boring of the basement rock, side slope and the underground structure hole wall that need reinforcement.Reinforcing rib meter mainly contains the types such as resistance-strain chip, differential resistance type, type vibration wire.The easy creep of resistance-strain chip poor durability, the sensitivity of differential resistance type reinforcing rib meter is lower, and the electric class reinforcing rib meters such as while differential resistance, type vibration wire are subject to electromagnetic interference (EMI) serious, and insulating requirements is high, is not suitable for using in strong electromagnetic rugged surroundings.
The principle of work of fiber-optic grating sensor is the variation that temperature variation causes fiber grating Prague centre wavelength, by measuring wavelength variations, show that extraneous physical quantity changes.If adopt fiber grating as the sensitive element of reinforcing rib meter, its measure linear is good, highly sensitive, precision is high, good insulation preformance, also has good antijamming capability simultaneously.And sensor can adopt the communication multiplex techniques such as wavelength-division multiplex, time division multiplex to form quasi-distributed network, an optical fiber gets final product signal transmission, and relatively traditional electrical sensor is saved a large amount of cables.
Summary of the invention
The object of the invention is: for the defect of reinforcing rib meter in prior art, provide that a kind of antijamming capability is strong, highly sensitive, precision is high, the optical fiber type reinforcing rib meter of stable performance.
Specifically, the present invention adopts following technical scheme to realize, comprise fiber grating sensing unit, sensing sleeve and reinforcing bar connecting link, fiber grating sensing unit is fixed in sensing sleeve, reinforcing bar connecting link is connected to the two ends of sensing sleeve, wherein said fiber grating sensing unit comprises fiber grating, elastic body base and protection housing, fiber grating tensioning is also fixed in elastic body base, elastic body base is encapsulated in protection housing, the two ends of fiber grating are signal transmission fiber, signal transmission fiber stretches out from fiber grating sensing unit two ends and passes sensing sleeve.
Technique scheme is further characterized in that: described fiber grating is coaxial with the suffered stress of reinforcing bar.
Technique scheme is further characterized in that: described fiber grating is by its two ends bonding fiber or be fixedly welded in elastic body base.
Technique scheme is further characterized in that: described fiber grating sensing unit is by tightening parts or be fixedly welded in sensing sleeve.
Technique scheme is further characterized in that: between described reinforcing bar connecting link and sensing sleeve, adopt screw thread or welding manner to be connected.
Technique scheme is further characterized in that: also comprise joint component, signal transmission fiber passes sensing sleeve by joint component.
Technique scheme is further characterized in that: between signal transmission fiber and joint component, adopt sealing adhesive sealing.
Technique scheme is further characterized in that: described joint component overcoat has sheath, adopts sealing adhesive sealing between sheath and joint component.
Technique scheme is further characterized in that: as a whole of described elastic body base, by metal, alloy, the organic material of different linear expansion coefficients, made.
Beneficial effect of the present invention is as follows: optical fiber type reinforcing rib meter of the present invention, antijamming capability is strong, highly sensitive, precision is high, stable performance, and grid region is without glue-line, in solidification process, can not be subject to non-homogeneous stress impact, the problem that has solved optical fiber Bragg grating encapsulation process medium wave deformation, has improved yield rate.The suffered stress of fiber grating and reinforcing bar, on same axis, does not exist the situations such as bias to cause the inaccurate problem of stress measurement.Optical fiber type reinforcing rib meter of the present invention has good safeguard structure and good waterproof and dampproof performance, can be applicable to the use under rugged surroundings.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, and wherein 1 is fiber grating sensing unit, and 2 is sensing sleeve, and 3 is tightening parts; 4 is elastomer based, and 5 is fiber grating, and 6 is protection housing, and 7 is signal transmission fiber; 8 is joint component, and 9 is sheath, and 10 is reinforcing bar connecting link.
Embodiment
With reference to the accompanying drawings and in conjunction with example the present invention is described in further detail.
As shown in Figure 1, one embodiment of the present of invention, it has a fiber grating sensing unit 1 and sensing sleeve 2.Fiber grating sensing unit 1 is by tightening parts 3 or be fixedly welded on sensing sleeve 2, and sensing sleeve 2 is made by high-strength material, according to different measurement demands, can design different shapes and size.Sensing sleeve 2 two ends are connected with reinforcing bar connecting link 10, between reinforcing bar connecting link 10 and sensing sleeve 2, adopt screw thread or welding manner to be connected.
Fiber grating sensing unit 1 comprises an elastic body base 4, a fiber grating 5 and a protection housing 6.The two ends optical fiber of fiber grating 5 is by bonding or be fixedly welded in elastic body base 4; and be encapsulated in protection housing 6 interior protection; thereby the tensioning that has realized fiber grating 5 is fixed; make grid region without glue-line simultaneously; can guarantee that like this reinforcing rib meter can not be subject to non-homogeneous stress impact in solidification process; the problem that solves optical fiber Bragg grating encapsulation process medium wave deformation, can effectively improve yield rate.As a whole of elastic body base 4, is made by metal, alloy, the organic material of different linear expansion coefficients.Fiber grating 5 and the suffered stress of reinforcing bar are at same axis.
The two ends of fiber grating 5 are signal transmission fiber 7, and signal transmission fiber 7 stretches out and passes sensing sleeve 2 by joint component 8 from fiber grating sensing unit 1 two ends.Between signal transmission fiber 7 and joint component 8, adopt sealing adhesive sealing.Joint component 8 overcoats have sheath 9, adopt sealing adhesive sealing between sheath 9 and joint component 8.
Due to fiber grating 5 with the suffered stress of reinforcing bar on same axis, therefore do not exist the situation such as eccentric to cause the inaccurate problem of stress measurement, can react really the stressing conditions of reinforcing bar, it is highly sensitive, precision is high.Simultaneously fiber grating, by good protecting, has good safeguard structure and good waterproof and dampproof performance, and during construction high-temperature soldering point from sensing unit away from, instrument is difficult for damaged, is adapted at the medium-term and long-term work of rugged surroundings.
Although the present invention with preferred embodiment openly as above, embodiment is not of the present invention for limiting.Without departing from the spirit and scope of the invention, any equivalence of doing changes or retouching, belongs to equally the present invention's protection domain.Therefore should to take the application's the content that claim was defined be standard to protection scope of the present invention.
Claims (9)
1. an optical fiber type reinforcing rib meter; it is characterized in that: comprise fiber grating sensing unit, sensing sleeve and reinforcing bar connecting link; fiber grating sensing unit is fixed in sensing sleeve; reinforcing bar connecting link is connected to the two ends of sensing sleeve; wherein said fiber grating sensing unit comprises fiber grating, elastic body base and protection housing; fiber grating tensioning is also fixed in elastic body base; elastic body base is encapsulated in protection housing; the two ends of fiber grating are signal transmission fiber, and signal transmission fiber stretches out from fiber grating sensing unit two ends and passes sensing sleeve.
2. optical fiber type reinforcing rib meter according to claim 1, is characterized in that: described fiber grating is coaxial with the suffered stress of reinforcing bar.
3. optical fiber type reinforcing rib meter according to claim 2, is characterized in that: described fiber grating is by its two ends bonding fiber or be fixedly welded in elastic body base.
4. optical fiber type reinforcing rib meter according to claim 2, is characterized in that: described fiber grating sensing unit is by tightening parts or be fixedly welded in sensing sleeve.
5. optical fiber type reinforcing rib meter according to claim 2, is characterized in that: between described reinforcing bar connecting link and sensing sleeve, adopt screw thread or welding manner to be connected.
6. according to the arbitrary described optical fiber type reinforcing rib meter of claim 2 ~ 5, it is characterized in that: also comprise joint component, signal transmission fiber passes sensing sleeve by joint component.
7. optical fiber type reinforcing rib meter according to claim 6, is characterized in that: between signal transmission fiber and joint component, adopt sealing adhesive sealing.
8. optical fiber type reinforcing rib meter according to claim 6, is characterized in that: described joint component overcoat has sheath, adopts sealing adhesive sealing between sheath and joint component.
9. optical fiber type reinforcing rib meter according to claim 6, is characterized in that: as a whole of described elastic body base, by metal, alloy, the organic material of different linear expansion coefficients, made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310495169.4A CN103512687A (en) | 2013-10-22 | 2013-10-22 | Optical fiber reinforcement meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310495169.4A CN103512687A (en) | 2013-10-22 | 2013-10-22 | Optical fiber reinforcement meter |
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| CN103512687A true CN103512687A (en) | 2014-01-15 |
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| CN201310495169.4A Pending CN103512687A (en) | 2013-10-22 | 2013-10-22 | Optical fiber reinforcement meter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596686A (en) * | 2015-01-09 | 2015-05-06 | 吉林大学 | Drilling type three-dimensional ground stress monitoring sensing device based on optical fiber sensing technology |
| CN104790369A (en) * | 2015-03-05 | 2015-07-22 | 中国电建集团昆明勘测设计研究院有限公司 | Device and method for monitoring dam foundation stress |
| CN105403339A (en) * | 2015-12-15 | 2016-03-16 | 中国电建集团中南勘测设计研究院有限公司 | Anchor pole force measuring apparatus, anchor pole and anchor pole tension measuring method |
| CN105651196A (en) * | 2014-12-05 | 2016-06-08 | 周峰 | Fiber grating steel bar gauge with self temperature compensation |
| CN108507714A (en) * | 2018-06-07 | 2018-09-07 | 广西大学 | Primary structure member, fiber-optic grating sensor and smart stay cable and production method |
| CN109341511A (en) * | 2018-11-27 | 2019-02-15 | 曾剑煌 | A kind of reinforcing bar detection device by reversed air pressure feedback regulation |
| CN111486999A (en) * | 2019-01-26 | 2020-08-04 | 桂林理工大学 | Self-sensing rebar packaging |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0914927A (en) * | 1995-06-28 | 1997-01-17 | Nkk Corp | Optical fiber strain sensor and its manufacturing method and method for measuring structure using optical fiber strain sensor |
| CN200962030Y (en) * | 2006-09-22 | 2007-10-17 | 宁波杉工结构监测与控制工程中心有限公司 | Non enhanced optical fiber grating reinforcing steel bar device |
| CN101694372A (en) * | 2009-09-30 | 2010-04-14 | 武汉理工大学 | Intelligent cable fiber grating strain sensor |
| CN102410817A (en) * | 2010-09-20 | 2012-04-11 | 孙斌 | Temperature self-compensating type fiber grating strain transducer |
| CN202511807U (en) * | 2012-03-22 | 2012-10-31 | 华南理工大学 | Embedded type double-layer packaging fiber grating sensor |
| CN202614434U (en) * | 2012-05-02 | 2012-12-19 | 武汉理工大学 | Fiber grating force sensor for anchor bolt |
| CN103292721A (en) * | 2013-06-07 | 2013-09-11 | 沈阳建筑大学 | Fiber grating wide-range strain sensor for monitoring strain of pre-stressed steel stranded wires |
-
2013
- 2013-10-22 CN CN201310495169.4A patent/CN103512687A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0914927A (en) * | 1995-06-28 | 1997-01-17 | Nkk Corp | Optical fiber strain sensor and its manufacturing method and method for measuring structure using optical fiber strain sensor |
| CN200962030Y (en) * | 2006-09-22 | 2007-10-17 | 宁波杉工结构监测与控制工程中心有限公司 | Non enhanced optical fiber grating reinforcing steel bar device |
| CN101694372A (en) * | 2009-09-30 | 2010-04-14 | 武汉理工大学 | Intelligent cable fiber grating strain sensor |
| CN102410817A (en) * | 2010-09-20 | 2012-04-11 | 孙斌 | Temperature self-compensating type fiber grating strain transducer |
| CN202511807U (en) * | 2012-03-22 | 2012-10-31 | 华南理工大学 | Embedded type double-layer packaging fiber grating sensor |
| CN202614434U (en) * | 2012-05-02 | 2012-12-19 | 武汉理工大学 | Fiber grating force sensor for anchor bolt |
| CN103292721A (en) * | 2013-06-07 | 2013-09-11 | 沈阳建筑大学 | Fiber grating wide-range strain sensor for monitoring strain of pre-stressed steel stranded wires |
Non-Patent Citations (1)
| Title |
|---|
| JOENZHOUYE: "光纤光栅传感产品宣传资料", 《百度文库》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651196A (en) * | 2014-12-05 | 2016-06-08 | 周峰 | Fiber grating steel bar gauge with self temperature compensation |
| CN104596686A (en) * | 2015-01-09 | 2015-05-06 | 吉林大学 | Drilling type three-dimensional ground stress monitoring sensing device based on optical fiber sensing technology |
| CN104596686B (en) * | 2015-01-09 | 2017-05-10 | 吉林大学 | Drilling type three-dimensional ground stress monitoring sensing device based on optical fiber sensing technology |
| CN104790369A (en) * | 2015-03-05 | 2015-07-22 | 中国电建集团昆明勘测设计研究院有限公司 | Device and method for monitoring dam foundation stress |
| CN105403339A (en) * | 2015-12-15 | 2016-03-16 | 中国电建集团中南勘测设计研究院有限公司 | Anchor pole force measuring apparatus, anchor pole and anchor pole tension measuring method |
| CN108507714A (en) * | 2018-06-07 | 2018-09-07 | 广西大学 | Primary structure member, fiber-optic grating sensor and smart stay cable and production method |
| CN108507714B (en) * | 2018-06-07 | 2024-02-27 | 广西大学 | Stress component, fiber bragg grating sensor, intelligent inhaul cable and manufacturing method |
| CN109341511A (en) * | 2018-11-27 | 2019-02-15 | 曾剑煌 | A kind of reinforcing bar detection device by reversed air pressure feedback regulation |
| CN109341511B (en) * | 2018-11-27 | 2020-08-28 | 广东建业检测技术有限公司 | Reinforcing steel bar detection device through reverse air pressure feedback adjustment |
| CN111486999A (en) * | 2019-01-26 | 2020-08-04 | 桂林理工大学 | Self-sensing rebar packaging |
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Application publication date: 20140115 |