Development of Level Sensors Based on Fiber Bragg Grating for Railway Track Differential Settlement Measurement

被引：23
|
作者：
Lai, Chun Cheung [1 ]
Au, Ho Yin [1 ]
Liu, Michael S. Y. [1 ]
Ho, Siu Lau [1 ]
Tam, Hwa Yaw [1 ,2 ]
机构：
[1] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China
[2] Hong Kong Polytech Univ, Dept Elect Engn, Photon Res Ctr, Hong Kong, Hong Kong, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2016年 / 16卷 / 16期
关键词：
Fiber optic sensors; level sensors; settlement sensors; OPTICAL-FIBER;
D O I：
10.1109/JSEN.2016.2574622
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper describes the development of a liquid level sensor based on a fiber Bragg grating (FBG) written in 80-mu m diameter optical fiber for railway track differential settlement measurement. The FBG embedded in the sensor is affixed to a float installed inside the liquid-filled sensor body, which measures the upthrust force induced by the float in response to the variations of liquid level. The level measurement and the temperature operation range of the sensor are 0-22 mm and -30 degrees C to 80 degrees C, respectively. Experimental results show that the sensitivity of the sensor is 0.107 nm/mm, which matches well with the designed value.
引用
收藏
页码：6346 / 6350
页数：5
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