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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

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Published on: September 30, 2019

Liquid Pressure Sensor Based on Fiber Bragg Grating with an Adjustable Structure.

Junda Lao¹, Chao Wang¹, Yaqi Tang¹

¹Center for Smart Sensing System, Julong College, Shenzhen Technology University, Shenzhen 518118, China.

Sensors (Basel, Switzerland)

|December 11, 2022

Summary

This summary is machine-generated.

This study presents an adjustable fiber-optic liquid pressure sensor using a fiber Bragg grating (FBG) and polydimethylsiloxane (PDMS). Adjusting the structure allows for a tunable measuring range with high sensitivity, ideal for various liquid level monitoring applications.

Keywords:

FBG PDMS adjustable liquid pressure

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Area of Science:

Fiber optics
Sensor technology
Materials science

Background:

Fiber Bragg gratings (FBGs) are widely used for sensing applications.
Accurate liquid pressure monitoring is crucial in various environmental and industrial settings.
Existing pressure sensors may lack adaptability to different liquid levels and sensitivity requirements.

Purpose of the Study:

To design and develop an adjustable fiber-optic liquid pressure sensor.
To demonstrate the sensor's ability to adjust its measuring range and maintain high sensitivity.
To investigate the impact of structural parameters on sensor performance.

Main Methods:

Encapsulating a fiber Bragg grating (FBG) within an adjustable double-flange cylinder rigid structure.
Utilizing flexible polymer polydimethylsiloxane (PDMS) for elastic deformation.
Adjusting structural parameters, such as inner diameter, to tune sensor performance.
Conducting simulations and experiments to validate the sensor's functionality.

Main Results:

The proposed sensor successfully adjusts its measuring range by altering the structural configuration.
High measurement sensitivity is maintained across various liquid levels.
Sensor sensitivity is enhanced through optimized structural parameter adjustments.
The sensor exhibits good linearity and stability in performance.

Conclusions:

The developed adjustable FBG-based liquid pressure sensor offers a novel solution for liquid pressure monitoring.
The sensor's adaptability and high sensitivity make it suitable for diverse environments like oceans and dams.
This technology provides new opportunities for precise and reliable liquid level and pressure measurements.