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首页> 外文会议>Symposium on Nondestructive Characterization of Materials in Aging Systems, held November 30- December 4, 1997, Boston, Massachusetts, U.S.A. >A multiplexed optical fiber sensor system for distributed measurement of structural strains
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A multiplexed optical fiber sensor system for distributed measurement of structural strains

机译：用于结构应变分布式测量的多路复用光纤传感器系统

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摘要

Structurally integrated optical fiber sensors form the basis for smart structure technology. Over the past decade a variety of sensor configurations have been developed for measurement of strains and deformations in structures. Strains and deformations alter the refractive index and the geometry of the optical fiber material. These changes perturb the intensity, phase, and polarization of the light-wave propagating along the probing fiber. The optical perturbations are detected for the determination of strain. The research presented here describes the development of a new optical fiber sensor system for measurement of structural strains based on white light interferometry. An optical switch provides for multiplexing of strain signals from various locations in the structure. Redundant Bragg grating type fiber optic sensors as well as strain gauges were employed for comparison and verification of strain signals as measured by the new system. The system provides capability for distributed sensing of strains in large structures.
机译：结构集成的光纤传感器构成了智能结构技术的基础。在过去的十年中，已经开发出各种传感器配置来测量结构中的应变和变形。应变和变形会改变光纤材料的折射率和几何形状。这些变化扰乱了沿探测光纤传播的光波的强度，相位和偏振。检测光学扰动以确定应变。本文介绍的研究描述了一种新的光纤传感器系统的开发，该系统可基于白光干涉测量法测量结构应变。光学开关用于多路复用来自结构中各个位置的应变信号。冗余布拉格光栅型光纤传感器以及应变仪被用于比较和验证新系统测量的应变信号。该系统提供了对大型结构中的应变进行分布式传感的功能。

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