A Study on the Accelerometer for the Acceleration and Inclination Estimation of Structures using Double-FBG Optical Sensors

이중 FBG 광섬유센서를 이용한 구조물 가속도 및 기울기 측정 장치에 관한 연구

  • Received : 2016.01.29
  • Accepted : 2016.02.29
  • Published : 2016.03.15


In this study, an acceleration sensor that has optical fibers to measure the inclination and acceleration of a structure through contradictory changes in two-component FBG sensors was examined. The proposed method was to ensure precise measurement through the unification of the deformation rate sensor and the angular displacement sensor. A high sensitivity three-axis accelerometer was designed and prepared using this method. To verify the accuracy of the accelerometer, the change in wavelength according to temperature and tension was tested. Then, the change in wavelength of the prepared accelerometer according to the sensor angle, and that of the sensor according to the change in ambient temperature were measured. According to the test results on the FBG-based vibration sensor that was developed using a high-speed vibrator, the range in measurement was 0.7 g or more, wavelength sensitivity, 2150 pm/g or more, and the change in wavelength change, $9.5pm/^{\circ}C$.


Supported by : 국토교통부


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