CN101923057A - BOTDR fiber optic corrosion sensor - Google Patents
BOTDR fiber optic corrosion sensor Download PDFInfo
- Publication number
- CN101923057A CN101923057A CN 201010159640 CN201010159640A CN101923057A CN 101923057 A CN101923057 A CN 101923057A CN 201010159640 CN201010159640 CN 201010159640 CN 201010159640 A CN201010159640 A CN 201010159640A CN 101923057 A CN101923057 A CN 101923057A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- water
- plexiglass
- corrosion
- permeable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims description 10
- 230000007797 corrosion Effects 0.000 title abstract description 15
- 238000005260 corrosion Methods 0.000 title abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 230000001050 lubricating effect Effects 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims 4
- 238000005538 encapsulation Methods 0.000 claims 1
- 239000013307 optical fiber Substances 0.000 abstract description 28
- 238000012544 monitoring process Methods 0.000 abstract description 16
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 abstract description 11
- 229920005372 Plexiglas® Polymers 0.000 abstract description 11
- 238000004806 packaging method and process Methods 0.000 abstract description 7
- 238000004891 communication Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000009776 industrial production Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011155 quantitative monitoring Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Landscapes
- Optical Transform (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
一种BOTDR光纤腐蚀传感器，实现了采用低廉的单模通讯光纤作为传感元件对腐蚀的监测。该装置是一种用来测量结构受腐蚀破坏程度的装置，传感器包括螺纹钢筋、透水层、有机玻璃叶片、润滑层、裸光纤、铠装光缆、透水封装盒。首先在螺纹钢筋上加覆透水层，之后把有机玻璃叶片均匀夹住螺纹钢筋，再把裸光纤缠绕在有润滑层覆盖的有机玻璃叶片上，然后连接裸光纤和铠装光缆，最后用透水封装盒封装，并通过引出端把铠装光缆引出。该传感器适于土木工程结构健康监测的混凝土大坝和一些经常受到腐蚀的结构内部，工艺简单，布设方便，精确度高，适于产业化生产。
A BOTDR optical fiber corrosion sensor realizes the monitoring of corrosion by adopting cheap single-mode communication optical fiber as a sensing element. The device is a device used to measure the degree of corrosion damage to the structure. The sensor includes threaded steel bars, water-permeable layers, plexiglass blades, lubricating layers, bare optical fibers, armored optical cables, and water-permeable packaging boxes. First, add a water-permeable layer on the threaded steel bar, then evenly clamp the plexiglass blade to the threaded steel bar, then wrap the bare optical fiber on the plexiglass leaf covered with a lubricating layer, then connect the bare optical fiber and the armored optical cable, and finally use water-permeable packaging The box is packaged, and the armored optical cable is led out through the lead-out end. The sensor is suitable for concrete dams in civil engineering structure health monitoring and inside some structures that are often corroded. It has simple process, convenient layout, high accuracy and is suitable for industrial production.
Description
技术领域technical field
本发明是一种使用光纤来监测钢筋混凝土结构钢筋腐蚀程度的传感器，具体说就是通过基于光纤BOTDR(布里渊光时域反射计)的应变传感技术，利用缠绕造价低廉的单模通讯光纤实现对钢筋腐蚀后膨胀应变的测量。通过监测钢筋腐蚀后产生体积膨胀应变现象，实现对钢筋腐蚀程度的定量监测。The present invention is a sensor that uses optical fiber to monitor the corrosion degree of steel bars in reinforced concrete structures. Specifically, through the strain sensing technology based on optical fiber BOTDR (Brillouin Optical Time Domain Reflectometer), the single-mode communication optical fiber with low cost is used. Realize the measurement of the expansion strain of the steel bar after corrosion. Quantitative monitoring of the corrosion degree of steel bars is realized by monitoring the volume expansion strain phenomenon after the steel bars are corroded.
背景技术Background technique
光纤是用于长期监测的理想传感元件，它具有性能稳定、多参数和分布测量等优点，因而近年来在结构健康监测传感技术中倍受重视。光纤传感器研究的时间虽然不长，进展却非常迅速。Optical fiber is an ideal sensing element for long-term monitoring. It has the advantages of stable performance, multi-parameter and distributed measurement, so it has attracted much attention in the sensing technology of structural health monitoring in recent years. Although the research time of optical fiber sensor is not long, the progress is very fast.
布里渊光时域反射计(Brillouin Optical Time-Domain Relectometer，BOTDR)的测量技术是国际上十几年来才出现的一项用于光通讯与结构健康监测的尖端技术。布里渊散射是入射光波与声波相互作用而产生的一种非弹性散射，在散射过程中产生的斯托克斯光相对于泵浦光有一频移，成为布里渊频移。散射产生的布里渊频移量与光纤中的声速成正比。而光纤中的折射率与声速都与光纤的温度及所受的应力等因素有关，基于此原理，通过对布里渊频移量的测量可以实现对应变与温度的监测。与传统监测技术相比较，BOTDR技术具有分布式监测、长距离、耐腐蚀以及抗电磁干扰等优点，可以直接利用普通通讯光纤直接作为传感器进行监测解调，实现公里级别范围内光纤受到应变与温度的连续分布式测量。BOTDR技术最显著的优点就是可以准确地测出光纤沿线任一点上的应力、温度信息。如果将光纤纵横交错铺设成网状就可具备一定规模的监测网，实现对监测对象的全方位监测，克服传统点式监测漏检的弊端，提高监测的成功率。Brillouin Optical Time-Domain Relectometer (BOTDR) measurement technology is a cutting-edge technology for optical communication and structural health monitoring that has only appeared in the world for more than ten years. Brillouin scattering is a kind of inelastic scattering caused by the interaction of incident light wave and sound wave. The Stokes light generated during the scattering process has a frequency shift relative to the pump light, which is called Brillouin frequency shift. The amount of Brillouin frequency shift produced by scattering is proportional to the speed of sound in the fiber. The refractive index and sound velocity in the optical fiber are related to the temperature and stress of the optical fiber. Based on this principle, the monitoring of strain and temperature can be realized by measuring the Brillouin frequency shift. Compared with traditional monitoring technology, BOTDR technology has the advantages of distributed monitoring, long distance, corrosion resistance and anti-electromagnetic interference. It can directly use ordinary communication optical fiber as a sensor for monitoring and demodulation, and realize the strain and temperature of the optical fiber within a kilometer range. continuous distributed measurement. The most significant advantage of BOTDR technology is that it can accurately measure the stress and temperature information at any point along the optical fiber. If the optical fibers are laid in a criss-cross pattern, a monitoring network of a certain scale can be established, which can realize all-round monitoring of the monitoring objects, overcome the drawbacks of traditional point-based monitoring and improve the success rate of monitoring.
实际中光纤价格低廉，易于形成规模生产，因此它具有良好的实用性，与光纤光栅相比更具有推广性。In practice, the price of optical fiber is low, and it is easy to form large-scale production, so it has good practicability and is more popular than fiber grating.
发明内容Contents of the invention
本发明要解决的技术问题是提供一种监测结构受腐蚀程度的传感器，该腐蚀传感器具有良好的精度，能满足工程需要，由于采用单模通讯光纤作为传感元件，造价比现有光纤光栅腐蚀传感器低廉。The technical problem to be solved by the present invention is to provide a sensor for monitoring the degree of corrosion of the structure. The corrosion sensor has good precision and can meet the needs of the project. Since the single-mode communication optical fiber is used as the sensing element, the cost is lower than that of the existing fiber grating corrosion sensor. Sensors are cheap.
本发明的技术方案如下：Technical scheme of the present invention is as follows:
该腐蚀传感器包括：螺纹钢筋、透水层、有机玻璃叶片、润滑层、裸光纤、铠装光缆、透水封装盒。首先螺纹钢筋上加覆透水层，有机玻璃叶片)夹住螺纹钢筋及透水层；有机玻璃叶片上加润滑层，裸光纤均匀紧密的缠绕在润滑层上；连接裸光纤和铠装光缆，裸光纤缠绕在有润滑层覆盖的有机玻璃叶片上，然后用带孔洞的透水封装盒封装，在引出端把铠装光缆引出。The corrosion sensor includes: threaded steel bar, water-permeable layer, plexiglass blade, lubricating layer, bare optical fiber, armored optical cable, and water-permeable packaging box. First, add a water-permeable layer on the threaded steel bar, and the plexiglass blade) clamps the threaded steel bar and the water-permeable layer; add a lubricating layer on the plexiglass blade, and the bare optical fiber is evenly and tightly wound on the lubricating layer; connect the bare optical fiber and the armored optical cable, and the bare optical fiber It is wound on the plexiglass blade covered with a lubricating layer, and then sealed with a water-permeable packaging box with holes, and the armored optical cable is led out at the lead-out end.
本发明的有益效果是工艺简单，适于产业化生产，成本低廉；可以应用一台信号采集分析装置实现对多个腐蚀传感器的监测；传感器布设方便、快捷、易于操作，测量精确度高。The invention has the beneficial effects of simple process, suitable for industrialized production, and low cost; one signal acquisition and analysis device can be used to monitor multiple corrosion sensors; the sensors are convenient, fast, easy to operate, and have high measurement accuracy.
附图说明Description of drawings
图1是光纤传感器透视图。Fig. 1 is a perspective view of an optical fiber sensor.
图2是光纤传感器横向剖面图。Figure 2 is a cross-sectional view of the fiber optic sensor.
图3是光纤传感器纵向剖面图。Fig. 3 is a longitudinal sectional view of the optical fiber sensor.
图中：1螺纹钢筋；2透水层；3有机玻璃叶片；4润滑层；5裸光纤；6铠装光缆；7透水封装盒。In the figure: 1 threaded steel bar; 2 water-permeable layer; 3 plexiglass blade; 4 lubricating layer; 5 bare optical fiber; 6 armored optical cable; 7 water-permeable packaging box.
具体实施方式Detailed ways
以下结合技术方案和附图详细叙述本发明的具体实施例。Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.
光纤腐蚀传感器结构构成如图1、图2和图3所示，该腐蚀传感器包括：1螺纹钢筋；2透水层；3有机玻璃叶片；4润滑层；5裸光纤；6铠装光缆；7透水封装盒。首先在螺纹钢筋上加覆透水层，之后把有机玻璃叶片均匀夹住螺纹钢筋，再把裸光纤缠绕在有润滑层覆盖的有机玻璃叶片上，然后连接裸光纤和铠装光缆，最后用透水封装盒封装，并通过引出端把铠装光缆引出。The structural composition of the optical fiber corrosion sensor is shown in Figure 1, Figure 2 and Figure 3. The corrosion sensor includes: 1 threaded steel bar; 2 water-permeable layer; 3 plexiglass blade; 4 lubricating layer; Packaging box. First, add a water-permeable layer on the threaded steel bar, then evenly clamp the plexiglass blade to the threaded steel bar, then wrap the bare optical fiber on the plexiglass leaf covered with a lubricating layer, then connect the bare optical fiber and the armored optical cable, and finally use water-permeable packaging The box is packaged, and the armored optical cable is led out through the lead-out end.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101596409A CN101923057B (en) | 2010-04-29 | 2010-04-29 | BOTDR (Brillouin Optical Time-Domain Reflectometer) fiber optical corrosive sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101596409A CN101923057B (en) | 2010-04-29 | 2010-04-29 | BOTDR (Brillouin Optical Time-Domain Reflectometer) fiber optical corrosive sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101923057A true CN101923057A (en) | 2010-12-22 |
| CN101923057B CN101923057B (en) | 2012-07-04 |
Family
ID=43338112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101596409A Expired - Fee Related CN101923057B (en) | 2010-04-29 | 2010-04-29 | BOTDR (Brillouin Optical Time-Domain Reflectometer) fiber optical corrosive sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101923057B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288534A (en) * | 2011-05-10 | 2011-12-21 | 大连理工大学 | Fiber grating reinforced concrete rusting sensor with temperature compensation |
| CN102288610A (en) * | 2011-07-19 | 2011-12-21 | 武汉理工大学 | Method for packaging steel bar corrosion optical fiber sensor with permeable mortar |
| CN103217109A (en) * | 2013-04-09 | 2013-07-24 | 河海大学 | Crack monitoring sensor and use method thereof based on OTDR (optical time domain reflectometry) technique |
| CN107843358A (en) * | 2017-12-04 | 2018-03-27 | 中国电建集团中南勘测设计研究院有限公司 | A kind of concrete abrasion early warning system and method |
| CN109406528A (en) * | 2018-09-07 | 2019-03-01 | 昆明理工大学 | It is a kind of for detecting the fibre-optical sensing device and its temperature-compensation method of reinforcement corrosion |
| CN111751326A (en) * | 2020-07-09 | 2020-10-09 | 大连理工大学 | An optical fiber sensor for monitoring the aging and peeling of steel structure coatings |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10197298A (en) * | 1997-01-14 | 1998-07-31 | Keisoku Gihan Kk | Method for measuring variable state of baserock, slope soil structure and civil engineering structure |
| US20030174924A1 (en) * | 2002-03-14 | 2003-09-18 | Tennyson Roderick C. | Monitoring of large structures using brillouin spectrum analysis |
| CN101275916A (en) * | 2008-04-25 | 2008-10-01 | 东南大学 | Distributed non-slip optical fiber strain sensor and manufacturing method thereof |
| JP4425845B2 (en) * | 2005-09-29 | 2010-03-03 | 株式会社日立エンジニアリング・アンド・サービス | Artificial barrier environment monitoring device |
| CN201653921U (en) * | 2010-04-29 | 2010-11-24 | 大连理工大学 | BOTDR fiber optic corrosion sensor |
-
2010
- 2010-04-29 CN CN2010101596409A patent/CN101923057B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10197298A (en) * | 1997-01-14 | 1998-07-31 | Keisoku Gihan Kk | Method for measuring variable state of baserock, slope soil structure and civil engineering structure |
| US20030174924A1 (en) * | 2002-03-14 | 2003-09-18 | Tennyson Roderick C. | Monitoring of large structures using brillouin spectrum analysis |
| JP4425845B2 (en) * | 2005-09-29 | 2010-03-03 | 株式会社日立エンジニアリング・アンド・サービス | Artificial barrier environment monitoring device |
| CN101275916A (en) * | 2008-04-25 | 2008-10-01 | 东南大学 | Distributed non-slip optical fiber strain sensor and manufacturing method thereof |
| CN201653921U (en) * | 2010-04-29 | 2010-11-24 | 大连理工大学 | BOTDR fiber optic corrosion sensor |
Non-Patent Citations (2)
| Title |
|---|
| 《公路交通科技》 20091130 轩元等 《BOTDA光纤传感技术监测钢筋锈蚀损伤的试验研究》 第82-86页 1 第26卷, 第11期 2 * |
| 《防灾减灾工程学报》 20080531 隋海波等 《基坑工程BOTDR分布式光纤监测技术研究》 第184-191页 1 第28卷, 第2期 2 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288534A (en) * | 2011-05-10 | 2011-12-21 | 大连理工大学 | Fiber grating reinforced concrete rusting sensor with temperature compensation |
| CN102288610A (en) * | 2011-07-19 | 2011-12-21 | 武汉理工大学 | Method for packaging steel bar corrosion optical fiber sensor with permeable mortar |
| CN102288610B (en) * | 2011-07-19 | 2013-10-02 | 武汉理工大学 | Method for packaging steel bar corrosion optical fiber sensor with permeable mortar |
| CN103217109A (en) * | 2013-04-09 | 2013-07-24 | 河海大学 | Crack monitoring sensor and use method thereof based on OTDR (optical time domain reflectometry) technique |
| CN103217109B (en) * | 2013-04-09 | 2016-11-23 | 河海大学 | A kind of Crack Monitoring sensor based on OTDR technique and using method thereof |
| CN107843358A (en) * | 2017-12-04 | 2018-03-27 | 中国电建集团中南勘测设计研究院有限公司 | A kind of concrete abrasion early warning system and method |
| CN109406528A (en) * | 2018-09-07 | 2019-03-01 | 昆明理工大学 | It is a kind of for detecting the fibre-optical sensing device and its temperature-compensation method of reinforcement corrosion |
| CN109406528B (en) * | 2018-09-07 | 2021-03-02 | 昆明理工大学 | Optical fiber sensing device for detecting corrosion of steel bar and temperature compensation method thereof |
| CN111751326A (en) * | 2020-07-09 | 2020-10-09 | 大连理工大学 | An optical fiber sensor for monitoring the aging and peeling of steel structure coatings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101923057B (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhao et al. | Relative humidity sensor based on hollow core fiber filled with GQDs-PVA | |
| CN101858796B (en) | Seawater temperature profile measurement method based on fiber grating principle | |
| CN102278947B (en) | Packaged FBG (Fiber Bragg Grating) sensor for strain and crack test of bituminous concrete road surface | |
| CN201535705U (en) | Fiber bragg grating pipeline stress hoop | |
| CN101923057A (en) | BOTDR fiber optic corrosion sensor | |
| Wang et al. | Overview of fibre optic sensing technology in the field of physical ocean observation | |
| CN201765351U (en) | A seawater temperature profile measurement optical cable based on fiber grating principle | |
| CN108507697A (en) | A kind of sea water temperature depth profile sampling towed system based on Fibre Optical Sensor | |
| CN201837485U (en) | Fiber bragg grating detection system for temperature and depth of seawater | |
| CN104330101A (en) | Optical fiber sensor capable of measuring temperatures and micrometric displacement simultaneously | |
| CN102645176A (en) | High-temperature resistant FBG (fiber bragg grating) sheet type strain sensor and manufacturing method thereof | |
| CN104121946A (en) | Intelligent casing pipe monitor system based on optical fiber sensing technology | |
| CN101975627B (en) | System for detecting temperature and depth of sea water by fiber bragg grating | |
| CN203587177U (en) | Optical fiber liquid level sensor | |
| CN103076108A (en) | Novel power cable conductor temperature measuring sensor based on FBG (fiber bragg grating) | |
| CN102645245A (en) | Distributed fluid pressure and temperature simultaneous measurement device and method based on optical fiber brillouin scattering | |
| CN105387968B (en) | Fibre cladding surface Bragg grating temperature self-compensating pressure transducers | |
| CN103743675A (en) | Optical fiber detector for measuring salinity and measurement device using optical fiber detector | |
| CN104101307A (en) | Fibre bragg grating reinforcement strain gauge capable of measuring temperature and strain simultaneously | |
| CN203465450U (en) | Strain and temperature dual-parameter optical cable | |
| CN103741728B (en) | Strain monitoring method of cast-in-situ concrete large-diameter pipe pile based on FBG sensor | |
| CN203083927U (en) | Optical fiber refraction index sensor based on single mode, fine core, multi-mode and single mode structure | |
| CN102435551A (en) | Fiber Bragg Grating Monitoring System for Building Wall Humidity | |
| CN201653921U (en) | BOTDR fiber optic corrosion sensor | |
| CN201917352U (en) | Fiber Bragg Grating Sensing Device for Landslide Retaining Wall Monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |