公开(公告)号：US20040104337A1

公开(公告)日：2004-06-03

申请号：US10717657

申请日：2003-11-21

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Hiroshi Tsuda

IPC: G01J001/04 ,  G01J005/08

CPC classification number: G01M11/083 ,  G01B11/165 ,  G01D5/35316 ,  G01L1/246

Abstract: To provide an optical fiber strain sensor device and a strain detection method, for measuring precisely AE and for detecting effectively a rapid strain change due to a shock load, an optical fiber strain sensor device includes an FBG sensor mounted on an object to be measured, a broadband light source for directing a broadband wavelength light ray to the FBG sensor, and an FBG filter that reflects or transmits a light ray reflected from the FBG sensor, and, using the FBG filter, the optical fiber strain sensor device processes and detects a change in the center wavelength of the light ray that has been incident from the broadband light source and then has been reflected from the FBG sensor.

Abstract translation: 为了提供光纤应变传感器装置和应变检测方法，为了精确地测量AE并且有效地检测由于冲击负载引起的快速应变变化，光纤应变传感器装置包括安装在被测量物体上的FBG传感器， 用于将宽带波长光线引导到FBG传感器的宽带光源和反射或透射从FBG传感器反射的光线的FBG滤光器，并且使用FBG滤光器，光纤应变传感器装置处理并检测 改变从宽带光源入射的光线的中心波长，然后从FBG传感器反射。