Laser & Optoelectronics Progress, Volume. 58, Issue 11, 1106006(2021)
Fiber Bragg Grating Soil Pressure Sensor Based on Additive Manufacturing Technology
In this study, a soil pressure sensor based on additive manufacturing (AM) technology and fiber Bragg grating (FBG) is designed. The calibration experiment results indicate that the sensitivity, minimum resolution, and measurement range of FBG soil pressure sensor are 0.2 pm/kPa, 5 kPa, and 1000 kPa, respectively, and that the sensitivity of the sensor can be adjusted as per requirement using AM parameters (filling density, filling material) to reduce measurement errors. The experimental results of the indoor model box show that, the sensor can effectively measure the internal pressure of soil during test loading and that measurement range is wide. The resolution and range can be customized according to real-world conditions, which provide a new approach for internal pressure monitoring of the soil.
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Wenli Liu, Chengyu Hong, Chengzhi Bao, Jingchuan Duan, Zaiming Lou. Fiber Bragg Grating Soil Pressure Sensor Based on Additive Manufacturing Technology[J]. Laser & Optoelectronics Progress, 2021, 58(11): 1106006
Category: Fiber Optics and Optical Communications
Received: Oct. 16, 2020
Accepted: Nov. 18, 2020
Published Online: Jun. 7, 2021
The Author Email: Hong Chengyu (cyhong@szu.edu.cn)