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27 November 2023 Sound source localization using phase-sensitive optical time-domain reflectometry
Yu Tian, Xinyu Fan, Zuyuan He
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Proceedings Volume 12771, Advanced Sensor Systems and Applications XIII; 127711W (2023) https://doi.org/10.1117/12.2689151
Event: SPIE/COS Photonics Asia, 2023, Beijing, China
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Abstract
Partial discharge often occurs in power equipment, which erodes insulation and eventually results in insulation failure. As partial discharge will generate sound such as acoustic or ultrasonic waves, a phase-sensitive optical time-domain reflectometry (φ-OTDR) is used to measure these signals. Then the number and locations of sound sources can be calculated using array signal processing methods such as Gerschgorin circle theorem and MUSIC (multiple signal classification) algorithm. In the experiment, several sound sources with frequencies below 600 kHz are used to simulate the partial discharges. Our system shows a high sensitivity and strong noise resistance performance. Accurate number estimation is realized with positioning errors less than 3 cm
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Yu Tian, Xinyu Fan, and Zuyuan He "Sound source localization using phase-sensitive optical time-domain reflectometry", Proc. SPIE 12771, Advanced Sensor Systems and Applications XIII, 127711W (27 November 2023); https://doi.org/10.1117/12.2689151
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KEYWORDS
Ultrasonics
Fiber optics sensors
Vibration
Demodulation
Reflectometry
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