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Fiber Optic Accelerometers and Sensors for Dynamic Measurements

机译：用于动态测量的光纤加速度计和传感器

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摘要

The purpose of this presentation is to provide an understanding of the current state-of-the-art in fiber Bragg grating (FBG) sensors and instrumentation for dynamic and vibration testing. Innovation in the optoelectronics and fiber-optic communication industries has significantly reduced optical component prices and improved quality. By leveraging these economies of scale, fiber-optic sensors and instruments have moved from experimental research applications in the lab to broad usage and applicability in field applications such as structural health monitoring. The main sensing parameters for these tests have been strain and/or temperature and now accelerometers with FBG sensors as the measurement medium. The discussion includes a brief overview of FBG sensors, the functionality of FBG sensors as accelerometers, aspects of commercially available instrumentation for monitoring the accelerometers, and applications where they are being used. Specific applications include the use of optical fiber based sensors in the S Blade wind turbine structural health monitoring project where FBG sensor arrays, along with several other sensing technologies for direct comparison, were surface-mounted and embedded in the composite structure of a wind turbine blade and a structural health monitoring system for restoration work on the historic Duomo di Milano.
机译：本介绍的目的是提供对目前的光纤布拉格光栅（FBG）传感器和用于动态和振动测试的仪器的理解。光电子和光纤通信行业的创新显着降低了光学元件价格和提高质量。通过利用这些规模经济，光纤传感器和仪器已经从实验室中的实验研究应用程序移动到了结构健康监测等现场应用中的广泛使用和适用性。这些测试的主要感测参数是应变和/或温度，现在具有FBG传感器的加速度计作为测量介质。讨论包括FBG传感器的简要概述，FBG传感器的功能作为加速度计，商业上可获得的仪器的各个方面，用于监测加速度计，以及所使用的应用。具体应用包括使用基于光纤的传感器在S刀片风力涡轮机结构健康监测项目中，其中FBG传感器阵列以及用于直接比较的几种其他感测技术，并嵌入在风力涡轮机叶片的复合结构中和历史悠久的Duomo di Milano恢复工作的结构健康监测系统。

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