An Approach for the Dynamic Measurement of Ring Gear Strains of Planetary Gearboxes Using Fiber Bragg Gratings

Niu, Hang; Zhang, Xiaodong; Chao-zhen, Hou

doi:10.3390/s17122872

Cited by 12 publications

(3 citation statements)

References 28 publications

(28 reference statements)

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“…The digital signal visualization processing subsystem is mainly composed of monitoring server and stress monitoring client. The system transmits and summarizes the monitoring data to the monitoring server through mining Ethernet for data storage, analysis and processing, converts the stress data into specific charts and reports through the server client network, and displays the dynamic change curve of underground stress on the stress monitoring terminal computer in real time, which is convenient for coal mine staff to observe; In addition, it can be used for staff to query and read the data history, predict the data change trend, and make out of limit early warning judgment 18 .…”

Section: ) Digital Signal Visualization Processing Subsystemmentioning

confidence: 99%

Research on distributed grating array stress sensing monitoring technology in coal mine

2022

Second International Conference on Optics and Communication Technology (ICOCT 2022)

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In view of the problems existing in the current electronic mine pressure monitoring equipment, such as distorted interference data, many transmission cables, short power supply distance and so on, the optical fiber mine pressure monitoring equipment has the problems of small capacity, high cost, monitoring blind areas and so on. Through the research of key technologies such as distributed grating array stress sensing technology, distributed grating array sensing multiplexing and network technology, distributed grating array sensing demodulation technology, combined with the mine pressure theory, optical fiber communication technology and computer technology, the project develops the grating array stress sensing device and grating array sensing demodulation substation suitable for the requirements of coal and rock stress measurement. Combined with the monitoring and early warning platform software, a real-time, remote and online distributed grating array stress monitoring system is formed.

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Section: ) Digital Signal Visualization Processing Subsystemmentioning

confidence: 99%

Research on distributed grating array stress sensing monitoring technology in coal mine

2022

Second International Conference on Optics and Communication Technology (ICOCT 2022)

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“…Commonly, bare optical strain sensors are directly bound on the surfaces of monitored structures using adhesives to detect strain shifts ( [21,22]), or to measure forces ( [23,24]), or are embedded in some composite material to form smart structures ( [25,26]).…”

Section: Introductionmentioning

confidence: 99%

Load estimation and vibration monitoring of scale model wind turbine blades through optical fiber sensors

Cazzulani¹,

Cinquemani²,

Benedetti³

et al. 2021

Eng. Res. Express

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Experimental activities on wind turbine models allow to speed up their design as well as the development of robust and effective control algorithms. Intending to have large information on load distribution on the blades, this work presents an experimental setup of a model wind turbine blade instrumented with two different types of optical fiber sensors (FOS). The first one is a traditional chain of Fiber Bragg Grating sensors, able to measure a large number of strain values; the second is based on Optical Backscatter Reflectometry (OBR), able to provide a continuous strain measurement. The experimental setup is calibrated to estimate load distribution along the blade and the two technologies are compared. The results of the experimental campaign suggest that optical fiber sensors could represent an interesting solution for real-time continuous load monitoring purposes.

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“…Commonly, bare FBG strain sensors are directly bound on the surfaces of monitored structures using adhesives to detect strain shifts [ 13 , 14 , 15 , 16 ] or are embedded in some composite material to form smart structures [ 17 , 18 ]. The strain sensitivity of directly-pasted or embedded bare FBG sensors is 1.21 pm/με, in theory [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Enhancement of FBG-Based Strain Sensor

Chen

Tan

et al. 2018

Sensors

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A novel fiber Bragg grating (FBG)-based strain sensor with a high-sensitivity is presented in this paper. The proposed FBG-based strain sensor enhances sensitivity by pasting the FBG on a substrate with a lever structure. This typical mechanical configuration mechanically amplifies the strain of the FBG to enhance overall sensitivity. As this mechanical configuration has a high stiffness, the proposed sensor can achieve a high resonant frequency and a wide dynamic working range. The sensing principle is presented, and the corresponding theoretical model is derived and validated. Experimental results demonstrate that the developed FBG-based strain sensor achieves an enhanced strain sensitivity of 6.2 pm/με, which is consistent with the theoretical analysis result. The strain sensitivity of the developed sensor is 5.2 times of the strain sensitivity of a bare fiber Bragg grating strain sensor. The dynamic characteristics of this sensor are investigated through the finite element method (FEM) and experimental tests. The developed sensor exhibits an excellent strain-sensitivity-enhancing property in a wide frequency range. The proposed high-sensitivity FBG-based strain sensor can be used for small-amplitude micro-strain measurement in harsh industrial environments.

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An Approach for the Dynamic Measurement of Ring Gear Strains of Planetary Gearboxes Using Fiber Bragg Gratings

Cited by 12 publications

References 28 publications

Research on distributed grating array stress sensing monitoring technology in coal mine

Research on distributed grating array stress sensing monitoring technology in coal mine

Load estimation and vibration monitoring of scale model wind turbine blades through optical fiber sensors

Sensitivity Enhancement of FBG-Based Strain Sensor

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