中文摘要：

设计了一种用于二维平面内的倾斜角测量的光纤布拉格光栅（FBG）传感器,采用4根光纤布拉格光栅,可用来测量平面内二维方向的倾斜角度,且无需附加温度补偿装置即可消除环境温度的影响。实验结果表明该设计具有高灵敏性和测量精度,其倾斜角度的准确度和精度非常好,大约可以达到0.009°的精度。此外,该倾斜传感器的准确度和精度还可通过增加设计中的悬垂重物质量,减小每对光纤之间的夹角来提高。如果进一步缩小该设计的整体结构大小,还可消除因空气扰动引起的4个光纤布拉格光栅温度不一致而引起的误差,减小环境温度对测量结果的影响。

英文摘要：

We designed a new type fiber Bragg grating（FBG） tilt sensor.It can be used to detect the magnitude as well as the direction of a two-dimensional inclination by using four FBGs,the temperature effect has been eliminated completely without additional temperature compensation schemes.The experimental results show that this sensor has high angle sensitivity and measurement resolution and the tilt angle accuracy and resolution of the FBG tilt sensor are very good.Resolution of about 0.009° has been achieved.Furthermore,the accuracy and resolution of the FBG tilt sensor can be easily increased by either using a heavier hanging weight,or decreasing the angle between a pair of hanging fibers.Furthermore,if the size of the designed structure is further decreased,the error caused by temperature difference of four FBGs due to air disturbance can be eliminated.It can reduce the environment temperature effect on metrical result.