Improvements and applications of distributed optical fibre sensing

分布式光纤传感的改进及应用

• 批准号: 42905-2010
• 负责人: Colpitts, Bruce
• 金额: $ 1.89万
• 依托单位: University of New Brunswick
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=568908
• 关键词: Improvements; applications; distributed; optical; fibre

The standard optical fibre used in communications systems can also be used for sensing temperature and strain over kilometer lengths of the fibre. By attaching the fibre to structures such as bridges or burying it along fences, with suitable instruments the changing strain on the bridge or a person walking near the fence can be detected. Thus a means to continuously monitor the health of a bridge is available which can prevent disaster. In a similar fashion the strain created on a buried fibre can be detected and reported as an intruder in a secure area. These are traditional applications of this emerging technology and in this proposed research we will develop new sensors and applications, improve the instrument performance, and significantly reduce the instrument cost which will enable much smaller applications. Specific applications are the development of a shape sensor that can be many kilometers in length and suitable for the detection of ground subsidence, the detection of intruders, or the mapping of directionally drilled holes or other tunnels. In collaboration with engineering and geology experts we will evaluate these technologies. Secondary applications such as the sensing of moisture and corrosion will be developed and tested to address the multibillion dollar issue of corrosion damage. Suitably coated optical fibre can detect petroleum leaks thus offering a means of large scale environmental monitoring. A research group and well equipped laboratory have been active in this distributed fibre optic sensors field at UNB for more than a decade. Dr. Colpitts leads this research group including ten students, a former student the 2008 NSERC Doctoral Prize winner, and we have produced numerous publications and patents in this field. Our team and facilities are well positioned to apply and improve distributed fibre optic sensing technology over the next five years.

在通信系统中使用的标准光纤也可用于测量光纤长度超过一公里的温度和应变。通过将纤维附着在诸如桥梁之类的结构上或将其埋在围栏上，用合适的仪器可以检测到桥上或围栏附近行走的人的应变变化。因此，一种持续监测桥梁健康状况的方法是可行的，可以预防灾害。以类似的方式，在埋藏的纤维上产生的张力可以被检测到，并作为安全区域的入侵者报告。这些都是这项新兴技术的传统应用，在这项拟议的研究中，我们将开发新的传感器和应用，提高仪器性能，并显着降低仪器成本，这将使更小的应用成为可能。