Light intensity modulation fiber-optic sensor for curvature measurement

被引：56
|
作者：
Fu, Yili [1 ]
Di, Haiting [1 ,2 ]
Liu, Renqiang [3 ]
机构：
[1] Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150001, Peoples R China
[2] NE Forestry Univ, Coll Engn & Technol, Harbin 150040, Peoples R China
[3] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2010年 / 42卷 / 04期
关键词：
Fiber-optic sensor; Curvature measurement; Principle of sensor; GAUGES;
D O I：
10.1016/j.optlastec.2009.10.009
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A light intensity modulation fiber-optic sensor, which can measure curvature directly, has been developed. It is suitable for the measurement of thin, embedded or highly flexible structures. An experimental analysis on the static and dynamic characteristics of sensor has been undertaken. The results show that the output voltage has polarity and a good linear relationship with curvature when the curvature radius is larger than 60 mm. The mathematical model relating the relative output loss, parameters of sensitive zone's configuration (depth, number, height and half angle of tooth) and bending radius is described analytically based on the geometric optics. Curvature fiber-optic sensors can be used to build a quasi-distributed fiber-optic sensor system, which can measure curvature and torsion angle simultaneously. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：594 / 599
页数：6
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