CN103148796B - Strain transducer - Google Patents
Strain transducer Download PDFInfo
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- CN103148796B CN103148796B CN201310063929.4A CN201310063929A CN103148796B CN 103148796 B CN103148796 B CN 103148796B CN 201310063929 A CN201310063929 A CN 201310063929A CN 103148796 B CN103148796 B CN 103148796B
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Abstract
The present invention relates to a kind of strain transducer, seal in the leading section of sensor body and be fixed with sensor front end lid, sensor front end lid is fixed with the first retainer and grating string, it is externally provided with the first protective jacket at the first retainer, the first optical fiber jacket it is fixed with in the first retainer, rearward end slipper seal in sensor body is plugged with sliding shoe, sliding shoe is fixed with tail end cover, the second retainer it is fixed with on sliding shoe in tail end cover, it is externally provided with the second protective jacket at the second retainer, in the second retainer, is fixed with the second optical fiber jacket；Being provided with optical fiber in sensor body, the one end of optical fiber is fixed in the first optical fiber jacket, and the other end of optical fiber is fixed in the second optical fiber jacket.This entirely novel invention strain transducer is compared with the strain transducer technology of existing ordinary optic fibre grating, and the raising of its certainty of measurement is it will be evident that the error of sensor itself is foreclosed by, easy for installation, corrosion-resistant and waterproof, uses Q-percentile life long.
Description
Technical field
The present invention relates to the device of a kind of strain detecting, especially a kind of strain transducer.
Background technology
At great civil engineering structure and infrastructure and equipment, such as bridge, tunnel, large-span space structure, high-rise building, large-scale dam, nuclear power station, offshore platform, the useful life of large lifting equipment is up to decades, even go up a century.In its work process, coupling due to factors such as environmental load effect, fatigue effect, corrosion effect and material agings, structure is inevitably generated damage and adds up and degradation resistance, thus the ability resisting load declines, even cause catastrophic burst accident, directly can cause great casualties and economic loss, be therefore extremely important and necessary to above-mentioned strain detecting.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of measure accurate, be suitable for the strain transducer that uses in the environment of severe field work environment and humidity.
The technical scheme provided according to the present invention, described strain transducer, seal in the leading section of sensor body and be fixed with sensor front end lid, sensor front end lid is fixed with the first retainer and grating string, it is externally provided with the first protective jacket at the first retainer, the first optical fiber jacket it is fixed with in the first retainer, rearward end slipper seal in sensor body is plugged with sliding shoe, sliding shoe is fixed with tail end cover, the second retainer it is fixed with on sliding shoe in tail end cover, it is externally provided with the second protective jacket at the second retainer, the second optical fiber jacket it is fixed with in the second retainer；Being provided with optical fiber in described sensor body, the one end of optical fiber is fixed in the first optical fiber jacket, and the other end of optical fiber is fixed in the second optical fiber jacket.
Sensor front end lid is provided with drive end bearing bracket fixed screw holes.
Sliding shoe is provided with sliding shoe fixed screw holes.
This entirely novel invention strain transducer is compared with the strain transducer technology of existing ordinary optic fibre grating, and the raising of its certainty of measurement is it will be evident that the error of sensor itself is foreclosed by, easy for installation, corrosion-resistant and waterproof, uses Q-percentile life long.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
This strain transducer, seal in the leading section of sensor body 6 and be fixed with sensor front end lid 4, sensor front end lid 4 is fixed with the first retainer 2 and grating string 3, it is externally provided with the first protective jacket 1 at the first retainer 2, the first optical fiber jacket 13 it is fixed with in the first retainer 2, rearward end slipper seal in sensor body 6 is plugged with sliding shoe 8, sliding shoe 8 can be along the certain distance that slides axially of sensor body 6, carry out being fixed with tail end cover 11 on sliding shoe 8, the second retainer 9 it is fixed with on sliding shoe 8 in tail end cover 11, it is externally provided with the second protective jacket 10 at the second retainer 9, the second optical fiber jacket 14 it is fixed with in the second retainer 9；Being provided with optical fiber 15 in described sensor body 6, the one end of optical fiber 15 is fixed in the first optical fiber jacket 13, and the other end of optical fiber 15 is fixed in the second optical fiber jacket 14.
Sensor front end lid 4 is provided with drive end bearing bracket fixed screw holes 5.
Sliding shoe 8 is provided with sliding shoe fixed screw holes 12.
The present invention is different from the high-precision strain transducer of ordinary optic fibre grating strain transducer, sensor of the invention itself does not introduce any measurement error, thus measurement error is controlled the error at only (FBG) demodulator instrument itself, and the most common fiber Bragg grating strain sensor the most inevitably introduces the error of sensor own, therefore it is more accurate to measure, the corrosion resistant measurement of sensor body material selection simultaneously, add the method using corrosion-resistant O-ring seals and high performance industry aviation glue to seal to encapsulate sensor, therefore this strain transducer uses in being more suitable for the environment of severe field work environment and humidity, this strain transducer reaches IPX7 through inspection water resistance.
The strain transducer of the present invention, has and is carved with grating string the 3, first protective jacket the 1, second protective jacket the 10, first retainer the 2, second retainer 9, sensor front end lid 4, sensor body 6 and the sliding shoe 8 of two different wave lengths and is formed；
The way that encapsulation uses O-ring seals 7 to add dozen aviation glue seals, and seals reliable；
Sensor body 6, sensor front end lid the 4, first retainer 2 and the second retainer 9 all use corrosion-resistant material, and as pyrite adds chromium plating, nickel and stainless material, therefore antiseptic property is good；
Because key light grid use one end to be fixed on freely slidable sliding shoe 8, screw is used to be fixed on reliably on testee sliding shoe 8 and sensor front end lid 4 again, therefore, sensor of the invention itself does not introduce error, add at sensor internal concatenation one temperature compensation sensor freely, therefore improve the certainty of measurement of sensor.
The operation principle of the present invention is:
The grating string 3 being carved with two different wave lengths is had to be individually fixed on sliding shoe 8 and sensor front end lid 4, it is fixed on reliably on testee by screw again, therefore, the dependent variable of testee is just fully equivalent to the dependent variable of fiber grating, add the auxiliary grating of a temperature compensation effect simultaneously, factor due to ambient temperature is taken into account, therefore can accurately measure the strain of testee.
In the present invention, first optical fiber jacket the 13, second optical fiber jacket 14 is formed by being removed by the one of middle part section of optical fiber jacket by ordinary optical cable with optical fiber 15.
Claims (1)
1. a strain transducer, it is characterized in that: seal in the leading section of sensor body (6) and be fixed with sensor front end lid (4), sensor front end lid (4) is fixed with the first retainer (2) and grating string (3), it is externally provided with the first protective jacket (1) at the first retainer (2), the first optical fiber jacket (13) it is fixed with in the first retainer (2), rearward end slipper seal in sensor body (6) is plugged with sliding shoe (8), sliding shoe (8) is fixed with tail end cover (11), it is fixed with the second retainer (9) on sliding shoe (8) in tail end cover (11), it is externally provided with the second protective jacket (10) at the second retainer (9), the second optical fiber jacket (14) it is fixed with in the second retainer (9)；Being provided with optical fiber (15) in described sensor body (6), the one end of optical fiber (15) is fixed in the first optical fiber jacket (13), and the other end of optical fiber (15) is fixed in the second optical fiber jacket (14)；
Sensor front end lid (4) is provided with drive end bearing bracket fixed screw holes (5)；
Sliding shoe (8) is provided with sliding shoe fixed screw holes (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310063929.4A CN103148796B (en) | 2013-02-28 | 2013-02-28 | Strain transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310063929.4A CN103148796B (en) | 2013-02-28 | 2013-02-28 | Strain transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103148796A CN103148796A (en) | 2013-06-12 |
| CN103148796B true CN103148796B (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310063929.4A Active CN103148796B (en) | 2013-02-28 | 2013-02-28 | Strain transducer |
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| CN (1) | CN103148796B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307963A (en) * | 2013-06-28 | 2013-09-18 | 国家电网公司 | Wide-range high pressure resistant wire type strain gauge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235921A (en) * | 2011-03-29 | 2011-11-09 | 徐峻锋 | Optical fiber sensor for detecting strain and temperature change simultaneously |
| CN102865827A (en) * | 2012-06-29 | 2013-01-09 | 杭州珏光物联网科技有限公司 | Fiber Bragg grating strain sensor |
| CN203100691U (en) * | 2013-02-28 | 2013-07-31 | 永大科技集团有限公司 | Strain sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002090122A (en) * | 2000-09-12 | 2002-03-27 | Tokyo Sokushin:Kk | Measuring device |
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2013
- 2013-02-28 CN CN201310063929.4A patent/CN103148796B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235921A (en) * | 2011-03-29 | 2011-11-09 | 徐峻锋 | Optical fiber sensor for detecting strain and temperature change simultaneously |
| CN102865827A (en) * | 2012-06-29 | 2013-01-09 | 杭州珏光物联网科技有限公司 | Fiber Bragg grating strain sensor |
| CN203100691U (en) * | 2013-02-28 | 2013-07-31 | 永大科技集团有限公司 | Strain sensor |
Non-Patent Citations (1)
| Title |
|---|
| 万里冰等.基于参考光栅的光纤光栅应变传感器温度补偿.《光电子.激光》.2006,第17卷(第1期),第50-53页. * |
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| CN103148796A (en) | 2013-06-12 |
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Effective date of registration: 20180403 Address after: 214124 Liye Road, Binhu Economic Development Zone, Wuxi, Jiangsu Province, No. 2 Patentee after: Wuxi Key-Sensor Photonics Technology Co., Ltd. Address before: 214124 No. 2 Liye Road, Binhu Economic Development Zone, Wuxi, Jiangsu Patentee before: Yongda Technology Group Co., Ltd. |
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Effective date of registration: 20190228 Address after: 201713 2nd Floor, Building No. 32, Lane 951, Kangye Road, Zhujiajiao Town, Qingpu District, Shanghai Patentee after: Shanghai Kang Yang Communication Technology Development Co., Ltd. Address before: 214124 No. 2 Liye Road, Binhu Economic Development Zone, Wuxi City, Jiangsu Province Patentee before: Wuxi Key-Sensor Photonics Technology Co., Ltd. |
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Effective date of registration: 20220620 Address after: Room 999-8-a1-201-210, gaolang East Road, Wuxi Economic Development Zone, Jiangsu Province, 214000 Patentee after: WUXI KEY-SENSOR PHOTONICS TECHNOLOGY Co.,Ltd. Address before: 201713 2nd Floor, Building No. 32, Lane 951, Kangye Road, Zhujiajiao Town, Qingpu District, Shanghai Patentee before: Shanghai Kang Yang Communication Technology Development Co.,Ltd. |