题目：分布式光纤传感及其在智能基础设施中的应用
Distributed optical fiber sensing and its application for smart infrastructure
时间：2022年04月22日周五10：00－11：00
地点：腾讯会议 ID：93382698531
腾讯直播间：https://meeting.tencent.com/l/hA1SrLFrwFwl
报告人：罗林青（美国劳伦斯伯克利国家实验室）
欢迎广大师生参加！
土木与交通学院
2022年04月18日
报告人简介：
罗林青博士目前是美国劳伦斯伯克利国家实验室的研究员，主要研究光纤传感及其在地球和环境科学领域的应用。在此之前，他曾于2012年在英国利物浦大学获得电子与信息工程学士学位。随后进入在剑桥大学，分别获得光学系统硕士学位和工程学博士学位。2017年博士毕业后又进入美国加州大学伯克利分校土木与环境工程系进行两年的博士后研究工作，并于2020年起进入劳伦斯伯克利国家实验室开始独立科研工作。主要研究方向为光纤传感及其在智能基础设施中的应用，如建筑基础、桩基、河堤、隧道、管道、油气井等。
Dr.Linqing Luo is a research scientist with a primary focus on fiber optic sensing and its applications in Earth and Environmental Sciences Area at Lawrence Berkeley National Laboratory. Before that, he studied in University of Liverpool and University of Cambridge for his Bachelor and MRes Degrees. He received a Ph.D. from the University of Cambridge, UK and he was a postdoc at University of California, Berkeley. His research focuses on the fiber optic sensing and its application in smart infrastructure, such as building foundation, piles, river levees, tunnels, pipelines, oil and gas wells, etc.
报告摘要：
在未来的基础设施中配备先进传感器将提升其“智能化”的特征。分布式光纤传感（DFOS）是一种极具前景的结构健康监测工具。它可以沿光纤长距离（如10-50km）连续（如5cm间距）测量结构的物理数据（如温度、应变、声学和振动）。其主要优点是在远距离下具有高灵敏度，并能够以分布方式与大量的被测对象进行交互。该系统有望作为民用基础设施的“神经系统”，为连接或嵌入在结构上的一根光缆提供数千个“应变计”、“热电偶”或“加速度计”。DFOS可以提供一个短期和长期的高效监测系统，以实现当下“智能基础设施”的重要目标。在这次讲座中，我们将讨论光纤传感的基础知识，和在结构健康监测的应用的几个案例（包括桩、管道、生产井和路面），以提高基础设施的安全性和韧性。
The future looks “smart” for infrastructure after the infrastructures are armed with several advanced sensors. Distributed Fiber Optic Sensing (DFOS) is one of the promising tools for structure health monitoring. It can measure physical quantities (such as temperature, strain, acoustic and vibration) along the optic fiber continuously (say 5 cm interval) along its length for long distance (say 10-50 km). The main advantage is its high sensitivity over large distances and the ability to interface with a wide range of measurands in a distributed manner. The systems provide thousands of “strain gauges”, “thermo-couples”, or “accelerometers” along a single fiber optic cable connected to or embedded in structures, which can then serve as a civil infrastructure nerve system. DFOS can provide a highly effective monitoring system for both short and long term to realize our concept of “smart infrastructure”. In this talk, we will discuss the basics of fiber optic sensing and several cases (including piles, pipelines, production well and pavement) in structure health monitoring for improving the safety and resilience of the infrastructure.
