Fiber Bragg Grating Pressure Sensor Integrated with Epoxy Diaphragm

Her, Shiuh-Chuan; Weng, Shin-Zhong

doi:10.3390/s21093199

Cited by 21 publications

(13 citation statements)

References 35 publications

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“…Round diaphragms are capable of greater deformation than square and rectangular diaphragms. 25 A diaphragm-based FBG pressure sensor is an FBG pasted radially to the center of a circular diaphragm, 25,[59][60][61] sensing the strain ε c in the center of the diaphragm under pressure, and can be expressed as E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 0 6 ; 1 1 6 ; 2 4 7…”

Section: Metal Mechanical Structure-based Fbg Pressure Sensorsmentioning

confidence: 99%

“…Round diaphragms are capable of greater deformation than square and rectangular diaphragms 25 . A diaphragm-based FBG pressure sensor is an FBG pasted radially to the center of a circular diaphragm, 25 , 59 – 61 sensing the strain εc in the center of the diaphragm under pressure, and can be expressed as εc=32(1−μ2)R28Eh2P,where E and μ are Young’s modulus and Poisson’s ratio of the diaphragm, respectively, and R and h are the radius and thickness of the diaphragm, respectively.…”

Section: Extrinsically Sensitive Enhanced Fbg Pressure Sensorsmentioning

confidence: 99%

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Fiber Bragg grating pressure sensors: a review

Wang

et al. 2023

Opt. Eng.

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Fiber Bragg grating (FBG) pressure sensors have the potential to replace conventional voltage sensors due to their compact size, resistance to electromagnetic interference, excellent safety, distributed sensing, and numerous other intrinsic benefits. It is frequently employed in the domains of civil engineering, aerospace, and medicine. Our work examines two types of sensitized FBG pressure sensors, namely FBG pressure sensors with innately improved sensitivity and FBG pressure sensors with extrinsically increased sensitivity. Our work examines microstructured fiber Bragg grating pressure sensors and polymer fiber Bragg grating pressure sensors for FBG pressure sensors with innately heightened sensitivity. Our research examines metal-mechanical FBG pressure sensors and polymer-mechanical FBG pressure sensors for extrinsically sensitized FBG pressure sensors. This report also summarizes the benefits and drawbacks of various FBG pressure sensors and temperature compensation techniques. Finally, the future of FBG pressure sensors is examined.

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Section: Metal Mechanical Structure-based Fbg Pressure Sensorsmentioning

confidence: 99%

Section: Extrinsically Sensitive Enhanced Fbg Pressure Sensorsmentioning

confidence: 99%

Fiber Bragg grating pressure sensors: a review

Wang

et al. 2023

Opt. Eng.

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“…3 In addition, single-point monitoring and difficulty in long-distance online monitoring further limit the application of traditional pressure sensors. 4 Optical fiber pressure sensors provide an attractive alternative due to their inherent safety, ease of distribution, strong stability, anti-electromagnetic interference, and corrosion resistance. 5,6 There are three different types of fiber optic pressure sensors: intensity-based, 7 fiber Bragg grating (FBG)-based, 8 and Fabry-Perot cavity-based.…”

Section: Introductionmentioning

confidence: 99%

Design and application of pressure sensor based on fiber Bragg grating

Pan,

Xiao,

Hou

et al. 2024

Opt. Eng.

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The pressure sensor is an essential device for pressure measurement and safety evaluation in modern industrial production and engineering applications. A fiber Bragg grating (FBG) pressure sensor is proposed. The FBG pressure sensor is designed based on a Bourdon tube and cantilever beam. Two FBGs are fixed on both sides of the elastomer with a sensitization effect, and the elastomer and the Bourdon tube are connected by spring. The sensing principle of the FBG pressure sensor is introduced in detail, the mathematical model of the sensor is established, and the performance of the sensor is studied. The experimental results show that the average sensitivity is 5.578 nm/MPa in the range of 0 to 0.4 MPa. The maximum error is 1.3% in the temperature range of −10°C to 70°C, and the temperature compensation performance is good. The remote transmission performance of the sensor is tested. The transmission loss of the sensor is about 0.433 dBm/km when the fiber cable length is 8.45 km. The field application is carried out in a pipeline experimental site, which verifies the practicability of the sensor.

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“…However, the multiparameter analysis was not performed. Her et al [ 35 ] developed a sensor for measuring pressure and water level built from an FBG integrated in an epoxy diaphragm, where the effect of diaphragm thickness on sensor sensitivity and accuracy was investigated. Nevertheless, this sensor needed a temperature compensation for practical applications.…”

Section: Introductionmentioning

confidence: 99%

Liquid Level Sensor with Two FBGs Embedded in a PDMS Diaphragm: Analysis of the Linearity and Sensitivity

Morais

Pontes

Marques

2022

Sensors

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This paper presents a fiber optic, liquid level sensor system based on a pair of fiber Bragg gratings (FBGs), embedded in a circular silicone (PDMS—polydimethylsiloxane) rubber diaphragm. The measurement principles of this sensor, whose diaphragm structure is about 2.2 mm thick with 45 mm in diameter, are introduced. To analyze the linearity and sensitivity of the sensor, the diaphragm was subjected to compression tests as well as to liquid level loading and unloading. The force and liquid level increase tests showed that inserting two FBGs (0.99453 for force and 0.99163 for liquid level) in the diaphragm resulted in a system with greater linearity than that with individual FBGs. This occurred where FBG1 showed 0.97684 for force and 0.98848 for liquid level and FBG2 presented 0.89461 for force and 0.93408 for liquid level. However, the compression and water level decrease tests showed that the system (R2 = 0.97142) had greater linearity with FBG2 (0.94123) and lower linearity with FBG1 (0.98271). Temperature characterization was also performed, and we found that sensitivity to FBG1 temperature variation was 11.73 pm/°C and for FGB2 it was 10.29 pm/°C. Temperature sensitivity was improved for both FBGs when compared with uncoated FBGs with typical values of 9.75 pm/°C. Therefore, the proposed FBG-based sensor system is capable of simultaneous measurement of force and temperature in a compact diaphragm-embedded system.

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Fiber Bragg Grating Pressure Sensor Integrated with Epoxy Diaphragm

Cited by 21 publications

References 35 publications

Fiber Bragg grating pressure sensors: a review

Fiber Bragg grating pressure sensors: a review

Design and application of pressure sensor based on fiber Bragg grating

Liquid Level Sensor with Two FBGs Embedded in a PDMS Diaphragm: Analysis of the Linearity and Sensitivity

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