A non-contact FBG vibration sensor with double differential temperature compensation

被引：29
作者：
Li, Tianliang [1 ]
Tan, Yuegang [1 ]
Zhou, Zude [1 ]
Zheng, Kai [1 ]
机构：
[1] Wuhan Univ Technol, Wuhan 430070, Hubei, Peoples R China
来源：
OPTICAL REVIEW | 2016年 / 23卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Double differential; Temperature compensation; Vibration sensor; FBG; FIBER BRAGG GRATINGS;
D O I：
10.1007/s10043-015-0153-y
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This paper has presented a non-contact fiber Bragg grating (FBG) vibration sensor with double differential temperature compensation. Two FBGs and two states of the sensor have been employed to achieve double differential temperature compensation. Based on magnetic coupling and FBG sensing principle, it can be used to realize non-contact measurement of vibration of the rotating shaft. Experimental results show that the working band ranges are within 0-150 Hz; the sensitivity is -0.67 pm/mu m, and the linearity is 3.87 % within a range of 2-2.6 mm. The fitting equation of temperature compensation which is caused by structural inflation can be expressed as: Delta lambda(1)' - Delta lambda(2)' = 1.51 x T -32.97. When used to amend a temperature error, the sensor's temperature error will be reduced to 1.19 % in the range of 25-60 degrees C.
引用
收藏
页码：26 / 32
页数：7
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