SENSORS: Novel Optical Fiber Sensors for Civil Engineering Structures

传感器：用于土木工程结构的新型光纤传感器

• 批准号: 0329572
• 负责人: Maria Feng
• 金额: --
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0329572&HistoricalAwards=false
• 关键词: SENSORS; Novel; Optical; Fiber; Sensors

Recent collapses of bridges and buildings due to earthquakes, accidents, and terrorist attacks have highlighted the urgent needs to monitor the condition of the nation's civil infrastructure systems. However, one of the major obstacles preventing sensor-based monitoring is the lack of reliable, easy-to-install, and cost-effective sensors that are suited for and can be densely deployed on large-scale civil infrastructure systems. This research focuses on development of a distributed optical fiber accelerometer system recently conceptualized by this PI. The sensor system represents a novel integration of the moir phenomena and fiber optics to achieve a robust performance in addition to its immunity to EM interference, easy cabling, and multiplexing capability. All of these, impossible to achieve by the conventional sensors, make the proposed sensor system ideal for applications in civil infrastructure monitoring. The objective of this research is to investigate whether it is technically feasible to engineer the sensor concept into a high-performance and low-cost multiplexible optical fiber sensor system. Major research tasks include (1) development of a prototype accelerometer with optimal tradeoff between resolution and bandwidth, (2) development of software that further increases the sensor resolution through innovative measurement and signal processing, and (3) field test in the world largest Three Gorges Power Plant in China, where the conventional sensors are rendered inoperable due to strong EM interference, high moisture, and huge scale. The highly interdisciplinary nature and the international collaboration component of this project provide unique educational opportunities to undergraduate and graduate (including underrepresented) students. This research will advance scientific knowledge in the areas of innovative sensing concepts, signal processing, and field implementation. The proposed high-performance optical fiber sensors will have a positive impact on the safety and reliability of the nation's civil infrastructure.

最近由于地震、事故和恐怖袭击而导致的桥梁和建筑物倒塌突出了监测国家民用基础设施系统状况的迫切需要。然而，阻碍基于传感器的监测的主要障碍之一是缺乏可靠、易于安装和具有成本效益的传感器，这些传感器适合并可以密集部署在大规模民用基础设施系统上。本研究的重点是开发一个分布式光纤加速度计系统最近的概念，由该PI。该传感器系统代表了莫尔现象和光纤的新颖集成，除了具有抗电磁干扰、易于布线和多路复用能力之外，还具有强大的性能。所有这些都是传统传感器无法实现的，使所提出的传感器系统成为民用基础设施监测的理想应用。本研究的目的是探讨将传感器概念设计成高性能、低成本的多路光纤传感器系统在技术上是否可行。主要研究任务包括：(1)在分辨率和带宽之间进行优化权衡的加速度计原型的开发；(2)开发通过创新测量和信号处理进一步提高传感器分辨率的软件；(3)在世界上最大的三峡电站进行现场测试，传统传感器由于强电磁干扰、高湿度和巨大规模而无法运行。这个项目的高度跨学科性质和国际合作的组成部分为本科生和研究生（包括代表性不足的）学生提供了独特的教育机会。这项研究将推进创新传感概念、信号处理和现场实施领域的科学知识。高性能光纤传感器将对国家民用基础设施的安全性和可靠性产生积极影响。