A deep learning algorithm ADPNet for strain and temperature decoupling of fiber bragg gratings

Deng, Chaofan; Yu, Mingxin; Zhu, Lianqing; Xia, Jiabin; Dong, Mingli

doi:10.1016/j.yofte.2023.103356

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…The temperature compensation method [168,169] is used to insulate one of the sensor structures from strain by encapsulation so that it only provides temperature information that can be used to compensate the temperature influence on the other structure. In addition, machine learning [170][171][172] has also been used to solve the problem of cross-sensitivity, and this method can achieve the decoupling of temperature and strain with a single sensor structure, reducing the cost and complexity of the sensor system. However, its limitation is that the demodulation accuracy is not high and needs more computational power.…”

Section: Cross Sensitivity Between Temperature and Strainmentioning

confidence: 99%

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

å¾�,

å�ž,

æ¢�

et al. 2023

Chin. Opt. Lett.

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In the aerospace field, for aerospace engines and other high-end manufacturing equipment working in extreme environments, like ultrahigh temperatures, high pressure, and high-speed airflow, in situ temperature measurement is of great importance for improving the structure design and achieving the health monitoring and the fault diagnosis of critical parts. Optical fiber sensors have the advantages of small size, easy design, corrosion resistance, anti-electromagnetic interference, and the ability to achieve distributed or quasi-distributed sensing and have broad application prospects for temperature sensing in extreme environments. In this review, first, we introduce the current research status of fiber Bragg grating-type and Fabry-Perot interferometer-type high-temperature sensors. Then we review the optical fiber hightemperature sensor encapsulation techniques, including tubular encapsulation, substrate encapsulation, and metalembedded encapsulation, and discuss the extreme environmental adaptability of different encapsulation structures. Finally, the critical technological issues that need to be solved for the application of optical fiber sensors in extreme environments are discussed.

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Section: Cross Sensitivity Between Temperature and Strainmentioning

confidence: 99%

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

å¾�,

å�ž,

æ¢�

et al. 2023

Chin. Opt. Lett.

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Progress of fiber Bragg grating sensors in state perception of electrical equipment

Sun,

2023

Measurement

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A temperature compensation method for fiber Bragg gratings using negative thermal expansive β-eucryptite packaging

Qiao,

Zhang,

Chen

et al. 2024

Meas. Sci. Technol.

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Fiber optic sensing measurements hold significant potential for various applications, but temperature compensation of fiber Bragg grating (FBG) remains a formidable challenge. This paper introduces the utilization of β-eucryptite as an encapsulation material for FBG, exploiting its negative thermal expansion (NTE) property to achieve temperature compensation. A two-point adhesive sealing technique was employed to affix FBG to the β-eucryptite substrate. While bare FBG and sensors encapsulated in 7075 aluminum alloy served as comparison. Experimental outcomes reveal that the FBG encapsulated in β-eucryptite exhibits temperature sensitivities of 1.67 pm/℃ within the temperature ranges of -30°C to 150°C. In contrast, bare FBG and sensor encapsulated with 7075 aluminum alloy display temperature sensitivities of 10.46 pm/°C and 37.31 pm/°C, respectively. The use of β-eucryptite for sensor encapsulation effectively reduces the temperature sensitivity of FBG. This temperature compensation method is straightforward yet promising and has great potential in aerospace and precision instrument measurement.

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A deep learning algorithm ADPNet for strain and temperature decoupling of fiber bragg gratings

Cited by 3 publications

References 17 publications

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

Progress of fiber Bragg grating sensors in state perception of electrical equipment

A temperature compensation method for fiber Bragg gratings using negative thermal expansive β-eucryptite packaging

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