摘要
提出了一种新颖的光纤布拉格光栅(FBG)倾斜传感器设计,采用4根反射波长不同的FBG,该结构更简单和稳定,可用来测量平面内两维方向的倾斜角度,具有高灵敏性和测量精度,且无需附加的温度补偿装置即可消除环境温度的影响。初步的实验结果证实了该设计的可行性,表明此倾斜传感器的角度准确度和精度非常好,可以达到约0.3°的精度。需要强调的是,此倾斜传感器的性能还可进一步提高,通过增加悬垂物重量,或减小每对光纤之间的夹角来提高准确度和精度。
A novel fiber Bragg grating（FBG） tilt sensor with simple and stable structure is proposed to detect the magnitude as well as the direction of a two-dimensional inclination by using four FBGs with different reflective wavelengths.High angle sensitivity and measurement resolution are achieved and the temperature effect is eliminated completely without additional temperature compensation schemes.Preliminary results verified the feasibility of the proposed idea and showed that the tilt angle accuracy and resolution of the FBG tilt sensor are very good.Resolution of about 0.3° has been achieved.It is important to emphasize that the performance of the FBG tilt sensor can be further improved.The accuracy and resolution of the sensor can be easily increased by either using a heavier weight or decreasing the angle between the hanging fibers.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2010年第7期2104-2107,共4页
Acta Optica Sinica
基金
国家自然科学基金(60807021)资助课题
