Development of level sensors based on fiber bragg grating for railway track differential settlement measurement

Chun Cheung Lai; Ho Yin Au; Michael S.Y. Liu; Siu Lau Ho; Hwa Yaw Tam

doi:10.1109/JSEN.2016.2574622

Development of level sensors based on fiber bragg grating for railway track differential settlement measurement

Chun Cheung Lai, Ho Yin Au, Michael S.Y. Liu, Siu Lau Ho, Hwa Yaw Tam

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

27 Citations (Scopus)

Abstract

This paper describes the development of a liquid level sensor based on a fiber Bragg grating (FBG) written in 80- μ 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 °C to 80 °C, respectively. Experimental results show that the sensitivity of the sensor is 0.107 nm/mm, which matches well with the designed value.

Original language	English
Article number	7480761
Pages (from-to)	6346-6350
Number of pages	5
Journal	IEEE Sensors Journal
Volume	16
Issue number	16
DOIs	https://doi.org/10.1109/JSEN.2016.2574622
Publication status	Published - 1 Aug 2016

Keywords

Fiber optic sensors
level sensors
settlement sensors

ASJC Scopus subject areas

Instrumentation
Electrical and Electronic Engineering

More information

10.1109/JSEN.2016.2574622

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title = "Development of level sensors based on fiber bragg grating for railway track differential settlement measurement",

abstract = "This paper describes the development of a liquid level sensor based on a fiber Bragg grating (FBG) written in 80- μ 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 °C to 80 °C, respectively. Experimental results show that the sensitivity of the sensor is 0.107 nm/mm, which matches well with the designed value.",

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AU - Tam, Hwa Yaw

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AB - This paper describes the development of a liquid level sensor based on a fiber Bragg grating (FBG) written in 80- μ 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 °C to 80 °C, respectively. Experimental results show that the sensitivity of the sensor is 0.107 nm/mm, which matches well with the designed value.

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Development of level sensors based on fiber bragg grating for railway track differential settlement measurement

Abstract

Keywords

ASJC Scopus subject areas

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