基于超弱光纤布拉格光栅的声速测量方法

doi:10.14139/i.cnki.cn22-1228.2024.02.016

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摘要

利用超弱光纤布拉格光栅对振动的敏感特性，提出了一种基于分布式光纤声学传感的声速测量方法。通过测量声速传递过程中不同超弱光纤布拉格光栅传感器接收到声音信号的时差来计算声速。该方法可以测量不同温度下的声速，其测量值与理论值误差小于 0.5 ％。为声速测量提供了新的方法。

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	丁卓梅
	陈文豪
	刘茁蓉
	罗志会
	徐　冰

关键词: 超弱光纤布拉格光栅分布式光纤声学传感声速测量温度

Abstract:

A sound velocity measurement method based on distributed fiber optic acoustic sensing is proposedby using the sensitive property of ultra-weak fiber grating to vibration.The speed of sound is calculated bymeasuring the time dillerence of sound signals received by different ultra-weak fiber grating sensors during thesound speed transmission process.T'he method can measure the speed of sound at different temperatures with anerror of less than 0,59 between the measured and theoretieal values.lt provides a new method for soundvelocity measurement.

Key words: ultra-weak fiber Bragg gratings distributed fiber optic acoustic sensing sound velocity measurements temperature

发布日期: 2024-04-25

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TP 212

引用本文:

丁卓梅 , 陈文豪 , 刘茁蓉 , 罗志会 , 徐　冰 . 基于超弱光纤布拉格光栅的声速测量方法 [J]. 大学物理实验, 2024, 37(2): 75-77.
DING Zhuomei , CHEN Wenhao, LlU Zhuorong , LUO Zhihui , XU Bing. A Method for Measuring Sound Velocity Based on UWFBG . Physical Experiment of College, 2024, 37(2): 75-77.

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http://dawushiyan.jlict.edu.cn/CN/10.14139/i.cnki.cn22-1228.2024.02.016 或 http://dawushiyan.jlict.edu.cn/CN/Y2024/V37/I2/75

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