CN204479035U - A kind of bridge structure safe monitoring fiber Bragg grating strain sensor - Google Patents
A kind of bridge structure safe monitoring fiber Bragg grating strain sensor Download PDFInfo
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- CN204479035U CN204479035U CN201520152219.3U CN201520152219U CN204479035U CN 204479035 U CN204479035 U CN 204479035U CN 201520152219 U CN201520152219 U CN 201520152219U CN 204479035 U CN204479035 U CN 204479035U
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Abstract
The utility model discloses a kind of bridge structure safe monitoring fiber Bragg grating strain sensor, comprise aligned sleeves, the inside of described aligned sleeves is provided with strain sensitive body, the both sides of described strain sensitive body are provided with waterproof O type circle, the two ends of the described strain inductor fiber grating that has also been threaded pastes fixture, the axle center of described fiber grating stickup fixture is also provided with fiber grating, and the two ends that described fiber grating pastes fixture are also provided with tubular threaded fixture.The beneficial effects of the utility model are: by the waterproof O type circle that arranges and aligned sleeves and then enhance protective capacities, sensor can be worked in the presence of a harsh environment, and the connected mode adopted is elasticity sensitivity to be connected, and then enhance the anti-surrender ability of sensor, more improve the rate of straining in actual measurement, the utility model also has the features such as structure is simple, measurement range is large, reproducible in addition.
Description
Technical field
The utility model relates to a kind of sensor, specifically, relates to a kind of bridge structure safe monitoring fiber Bragg grating strain sensor.
Background technology
Different types of rridges structure plays extremely important effect in China's economic construction and social development process, and the long term monitoring of its safety and health situation is subject to paying close attention to widely and studying both at home and abroad.Wherein strain running status and the load-bearing capacity that directly can reflect bridge structure as the most basic a kind of physical quantity, by the key parameters of bridge structure can be obtained the analyzing and processing of strain information and make real time health assessment.Fiber grating is considered to one of the most potential smooth passive sensing device, the feature such as it has, and volume is little, flexible, intrinsic safety, adaptation rugged surroundings ability are strong.And, according to the needs that current bridge structure safe is monitored, the sensing element utilizing fiber grating to relate to has easy for installation, that measurement range is large, long-term reliability is good feature, and real-time, the accurate and effective health monitoring that can realize beam slab strain, but sensor in the market does not but have these features.
For the problem in correlation technique, at present effective solution is not yet proposed.
Utility model content
The purpose of this utility model is to provide a kind of bridge structure safe monitoring fiber Bragg grating strain sensor, to overcome currently available technology above shortcomings.
The purpose of this utility model is achieved through the following technical solutions:
A kind of bridge structure safe monitoring fiber Bragg grating strain sensor, comprise aligned sleeves, the inside of described aligned sleeves is provided with strain sensitive body, the both sides of described strain sensitive body are provided with waterproof O type circle, the two ends of the described strain inductor fiber grating that has also been threaded pastes fixture, the axle center of described fiber grating stickup fixture is also provided with fiber grating, and the two ends that described fiber grating pastes fixture are also provided with tubular threaded fixture.
Further, the both sides of described strain inductor are provided with the O type groove matched with waterproof O type circle, and the centre of described O type groove is also provided with the groove that turning is 90 °.
Further, described fiber grating is pasted on fixture and is also provided with the bridging groove matched with described fiber grating.
The beneficial effects of the utility model are: by the waterproof O type circle that arranges and aligned sleeves and then enhance protective capacities, sensor can be worked in the presence of a harsh environment, and the connected mode adopted is elasticity sensitivity to be connected, and then enhance the anti-surrender ability of sensor, more improve the rate of straining in actual measurement, the utility model also has the features such as structure is simple, measurement range is large, reproducible in addition.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the strain sensitive body according to the utility model embodiment;
Fig. 2 is the structural representation pasting fixture according to the fiber grating of the utility model embodiment;
Fig. 3 is the structural representation of the tubular threaded fixture according to the utility model embodiment;
Fig. 4 is the structural representation of the aligned sleeves according to the utility model embodiment;
Fig. 5 is the bridge structure safe monitoring fiber Bragg grating strain sensor structural representation according to the utility model embodiment.
In figure:
1, aligned sleeves; 2, strain sensitive body; 3, waterproof O type circle; 4, fiber grating pastes fixture; 5, fiber grating; 6, tubular threaded fixture; 7, O type groove; 8, groove; 9, bridging groove.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection.
As Figure 1-5, a kind of bridge structure safe monitoring fiber Bragg grating strain sensor according to embodiment of the present utility model, comprise aligned sleeves 1, the inside of described aligned sleeves 1 is provided with strain sensitive body 2, the both sides of described strain sensitive body 2 are provided with waterproof O type circle 3, the two ends of described strain inductor 2 fiber grating that has also been threaded pastes fixture 4, the axle center of described fiber grating stickup fixture 4 is also provided with fiber grating 5, and the two ends that described fiber grating pastes fixture 4 are also provided with tubular threaded fixture 6.
Further, continue with reference to Fig. 1, in one embodiment, the both sides of described strain inductor 2 are provided with the O type groove 7 matched with waterproof O type circle 3, the centre of described O type groove 7 is also provided with the groove 8 that turning is 90 °, and wherein, groove 8 cuts one degree of depth and the specific groove of width at interval of 90 degree on hollow stainless steel pipe, circulation like this two weeks, to form suitable strain sensitive body 2 structure being similar to spring of rigidity.
Further, continue with reference to Fig. 3, in one embodiment, described fiber grating is pasted on fixture 3 and is also provided with the bridging groove 9 matched with described fiber grating, wherein fiber grating 5 is exactly be pasted onto in bridging groove 9, the bonding method of fiber grating 5 is: first adopt glass solder to carry out ground floor to fiber grating and paste fixing, then utilizes heat-curable epoxy resin glue to carry out the second layer and pastes fixing.
Further, described fiber grating is pasted fixture 4 and is adopted screw fixation method to be connected with class spring-tube type strain sensitive body 2, adopts two-end-point sticky mode to be pasted on fixture 4 by fiber grating, fiber grating 5 is on the axle center of strain sensitive body 2.
In addition, described tubular threaded fixture 6 has internal thread and external thread structure, and utilize internal thread it to be connected with tubular type sensitive body, external thread is for being fixed on mounting seat by fiber Bragg grating strain sensor.
In sum, by means of technique scheme of the present utility model, by the waterproof O type circle that arranges and aligned sleeves and then enhance protective capacities, sensor can be worked in the presence of a harsh environment, and the connected mode adopted is elasticity sensitivity to be connected, and then enhance the anti-surrender ability of sensor, more improve the strain precision in actual measurement, the utility model also has the features such as structure is simple, measurement range is large, reproducible in addition.The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a bridge structure safe monitoring fiber Bragg grating strain sensor, it is characterized in that, comprise aligned sleeves (1), the inside of described aligned sleeves (1) is provided with strain sensitive body (2), the both sides of described strain sensitive body (2) are provided with waterproof O type circle (3), the two ends of described strain inductor (2) fiber grating that has also been threaded pastes fixture (4), the axle center of described fiber grating stickup fixture (4) is also provided with fiber grating (5), the two ends that described fiber grating pastes fixture (4) are also provided with tubular threaded fixture (6).
2. bridge structure safe monitoring fiber grating strain inductor according to claim 1, it is characterized in that, the both sides of described strain inductor (2) are provided with the O type groove (7) matched with waterproof O type circle (3), and the centre of described O type groove (7) is also provided with the groove (8) that turning is 90 °.
3. bridge structure safe monitoring fiber grating strain inductor according to claim 1, is characterized in that, described fiber grating is pasted on fixture (3) and is also provided with the bridging groove (9) matched with described fiber grating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152219.3U CN204479035U (en) | 2015-03-17 | 2015-03-17 | A kind of bridge structure safe monitoring fiber Bragg grating strain sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152219.3U CN204479035U (en) | 2015-03-17 | 2015-03-17 | A kind of bridge structure safe monitoring fiber Bragg grating strain sensor |
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| CN204479035U true CN204479035U (en) | 2015-07-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167165A (en) * | 2017-06-20 | 2017-09-15 | 中国人民解放军63729部队 | Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method |
| CN108759681A (en) * | 2018-04-28 | 2018-11-06 | 中国神华能源股份有限公司 | Fiber-optic grating sensor |
| CN113340223A (en) * | 2021-06-02 | 2021-09-03 | 桂林理工大学 | Fiber grating strain sensor with adjustable measuring range and preparation and use methods thereof |
-
2015
- 2015-03-17 CN CN201520152219.3U patent/CN204479035U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167165A (en) * | 2017-06-20 | 2017-09-15 | 中国人民解放军63729部队 | Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method |
| CN108759681A (en) * | 2018-04-28 | 2018-11-06 | 中国神华能源股份有限公司 | Fiber-optic grating sensor |
| CN113340223A (en) * | 2021-06-02 | 2021-09-03 | 桂林理工大学 | Fiber grating strain sensor with adjustable measuring range and preparation and use methods thereof |
| CN113340223B (en) * | 2021-06-02 | 2022-12-09 | 桂林理工大学 | Fiber grating strain sensor with adjustable measuring range and preparation and use methods thereof |
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Effective date of registration: 20151023 Address after: West Street in the official Zhejiang city of Ningbo province Zhenhai District 315020 Village No. 777 Patentee after: NINGBO LIANGZHI ROAD AND BRIDGE TECHNOLOGY CO., LTD. Address before: West Street in the official Zhejiang city of Ningbo province Zhenhai District 315201 Village No. 777 Patentee before: Ningbo Sheng Feng Information technology company limited |