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| Study on Sensitivity-adjustable Fiber Bragg Grating Obliquity Sensor |
| SUN Wei,LIANG Da-kai,ZENG Jie,FENG Li-hang,YE Ting |
| Ministry of Education Key laboratory of Vehicle Structure and Control, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China |
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Abstract A new sensitivity-adjustable fiber Bragg grating (FBG) obliquity sensor based on the deformation theory of the constant-section beam is described. The obliquity sensor can achieve the measurement of object’s angle by the way that the FBG experiences the deformation of the constant-section beam due to the change of object’s angle,and corresponding FBG obliquity measuring system was set up. Experimental results show that the measuring range is ±35°,the highest sensitivity is 56.93pm/(°),the measurement accuracy is 0.02°,and the sensor sensitivity can be adjusted by altering the size of the constant-section beam.
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Sasaki E,Tanahashi R,Ishikawa Y. Development of Fiber Optic Inclinometers for Bridge Monitoring［J］. Engineering Asset Management,2006,17 (2): 221-228.
［2］Kojima T,Wakiwaka H. Study on High-Precision Angle Sensor and Angle Measurement Technology［J］.Electrical Engineering, 2008,162(3): 67-77．
［3］邓宏贵 ,吴让亮,施佳佳．数字角度传感器在建筑角度测量仪中的应用［J］．传感技术学报,2010,23(8):1206-1210．
［4］张维胜.倾角传感器原理和发展［J］．传感器世界,2002,8(8):18-21．
［5］吴建平.传感器原理及应用［M］．北京:机械工业出版社,2009,112-133．
［6］钱云江,王义平,朱涛.光纤光栅原理及应用［M］．北京:科学出版社,2006, 98-127．
［7］张迎新,刘京南,内田敬久,等．差动光栅式精密定位精度的提高［J］．计量学报,2006,27(1):7-11．
［8］Schuyler J N,Gularte F.Automated Tiltmeter Monitoring of Bridge Response to Compaction Grouting［J］.The International Society for Optical Engineering,2000,3995:128-135.
［9］朱丹丹,李伟欣,李志全,等．分布式光栅应变和温度同时测量系统［J］.计量学报,2008,29(1):29-32． |
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2012, Vol. 33 
