A novel wide measuring range FBG displacement sensor with variable measurement precision based on helical bevel gear
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Optical Fiber Sensing Technology and Engineering Research Center, Shandong University, Jinan 250061, China

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This work has been supported by the National Natural Science Foundation of China (Nos.61174018, 41472260 and 41202206).

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    Abstract:

    A novel fiber Bragg grating (FBG) displacement sensor is proposed, which can achieve wide measuring range displacement detection with variable measurement precision due to its mechanical transfer structure of helical bevel gear. A prototype is designed and fabricated. The maximum detection displacement of this prototype is 1.751 m, and the precision grade changes from 0.2% to 6.7%. Through analyzing the experiment data which is obtained in the calibration experiment, the measuring range of this sensor is from 0 m to 1.532 m, and the wavelength shift errors between experiment data and theory calculation are all less than 5%.

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JIANG Shan-chao, WANG Jing, SUI Qing-mei, CAO Yu-qiang. A novel wide measuring range FBG displacement sensor with variable measurement precision based on helical bevel gear[J]. Optoelectronics Letters,2015,11(2):81-83

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History
  • Received:September 29,2014
  • Revised:November 07,2014
  • Online: November 26,2015
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