IoT Node Interrogation System for Fiber Bragg Grating Sensors: Design, Characterization, and On-Field Test

Marrazzo, Vincenzo Romano; Fienga, Francesco; Borghese, Alessandro; Remondini, Enrico; Schettini, Clemente; Cafarelli, Luca; Laudati, Armando; Cusano, Andrea; Irace, Andrea; Breglio, Giovanni

doi:10.1109/tim.2024.3368488

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…For the common FBG sensor system with single-mode fiber, in order to achieve high-precision multipoint measurements, various multiplexing techniques have been proposed, such as wavelength division multiplexing (WDM) [18], time division multiplexing (TDM) [19], spatial division multiplexing (SDM) [20], and hybrid multiplexing [21]. Among them, AWG-based FBG interrogation for the WDM system is the most widely used [22][23][24][25]. The above scheme provides a new idea for the comprehensive multipoint detection of motor temperature.…”

Section: Introductionmentioning

confidence: 99%

A Multiplexing Optical Temperature Sensing System for Induction Motors Using Few-Mode Fiber Spatial Mode Diversity

Liu,

Gu,

Chen

2024

Electronics

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Induction motors are widely applied in motor drive systems. Effective temperature monitoring is one of the keys to ensuring the reliability and optimal performance of the motors. Therefore, this paper introduces a multiplexed optical temperature sensing system for induction motors based on few-mode fiber (FMF) spatial mode diversity. By using the spatial mode dimension of FMF, fiber Bragg grating (FBG) carried by different spatial modes of optical paths is embedded in different positions of the motor to realize multipoint synchronous multiplexing temperature monitoring. The paper establishes and demonstrates a photonic lantern-based mode division sensing system for motor temperature monitoring. As a proof of concept, the system demonstrates experiments in multiplexed temperature sensing for motor stators using the fundamental mode LP01 and high-order spatial modes LP11, LP21, and LP02. The FBG sensitivity carried by the above mode is 0.0107 nm/°C, 0.0106 nm/°C, 0.0097 nm/°C, and 0.0116 nm/°C, respectively. The dynamic temperature changes in the stator at different positions of the motor under speeds of 1k rpm, 1.5k rpm, 2k rpm with no load, 3 kg load, and 5 kg load, as well as at three specific speed–load combinations of 1.5k rpm_3 kg, 1k rpm_0kg, 2k rpm_5 kg and so on are measured, and the measured results of different spatial modes are compared and analyzed. The findings indicate that different spatial modes can accurately reflect temperature variations at various positions in motor stator winding.

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Section: Introductionmentioning

confidence: 99%

A Multiplexing Optical Temperature Sensing System for Induction Motors Using Few-Mode Fiber Spatial Mode Diversity

Liu,

Gu,

Chen

2024

Electronics

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An Electrothermal Anti-Ice System Embedded into a Leading Edge Profile Validated Through Fiber Optic Sensors

Marrazzo,

Fienga,

Laudati

et al. 2024

2024 IEEE International Symposium on Measurements &Amp;amp; Networking (M&N)

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Evaluation of an Erbium-Doped Fiber Ring Laser as an Edge Filtering Device for Fiber Bragg Grating Sensor Interrogation

Stathopoulos,

Lazakis,

Simos

et al. 2024

Photonics

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An easy-to-implement and cost-effective Fiber Bragg Grating (FBG) sensor interrogation technique based on a ring Erbium-Doped Fiber Laser (EDFL) topology is proposed and experimentally assessed. The FBG sensor is part of the EDFL cavity and must have a central wavelength located within the linear region of the EDF’s amplified spontaneous emission (ASE) spectrum, which occurs at between 1530 and 1540 nm. In this manner, the wavelength-encoded response of the FBG under strain is converted to a linear variation in the laser output power, removing the need for spectrum analysis as well as any limitations from the use of external edge-filtering components. In addition, the laser linewidth is significantly reduced with respect to the FBG bandwidth, thus improving the resolution of the system, whereas its sensitivity can be controlled through pumping power. The performance of the system has been characterized by modeling and experiments for EDFs with different lengths, doping concentrations, and pumping power levels. The influence of mode-hopping in the laser cavity on the resolution and accuracy of the system has also been investigated.

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IoT Node Interrogation System for Fiber Bragg Grating Sensors: Design, Characterization, and On-Field Test

Cited by 3 publications

References 23 publications

A Multiplexing Optical Temperature Sensing System for Induction Motors Using Few-Mode Fiber Spatial Mode Diversity

A Multiplexing Optical Temperature Sensing System for Induction Motors Using Few-Mode Fiber Spatial Mode Diversity

An Electrothermal Anti-Ice System Embedded into a Leading Edge Profile Validated Through Fiber Optic Sensors

Evaluation of an Erbium-Doped Fiber Ring Laser as an Edge Filtering Device for Fiber Bragg Grating Sensor Interrogation

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