基于敲击振动的长距离分布式定位方法
Long-range distributed localization method of tapping-based vibrations
摘要
Abstract
To enable effective mapping of underground vibrations,particularly non-periodic impact signals propagating along pipelines,this paper proposes a non-periodic vibration localization method that integrates a Mach-Zehnder interferometer(MZI)with forward transmission distributed vibration sensing(FTDVS)technology.Non-periodic vibration signals are demodulated through optical phase modulation in the sensing fiber.Comparative experiments were conducted to evaluate the localization accuracy of the three algorithms:cross-correlation,time shifted standard deviation(TSDEV),and phase spectrum time-delay methods.Results show that both the cross-correlation and TSDEV algorithms provide higher localization accuracy for non-periodic signals,whereas the phase spectrum time-delay method exhibits reduced accuracy due to insufficient consistency in dominant frequency components.Experimental validation over a 60.32 km sensing fiber demonstrates that a localization accuracy of approximately 10 m can be achieved for non-periodic impact vibrations.Therefore,the proposed localization approach exhibits strong potential for long-distance vibration monitoring and fault detection in complex underground environments,particularly in pipeline systems.关键词
光电子与激光技术/分布式传感器/光纤/前向传输/分布式振动传感系统/同向正交解调/相位谱/互相关法/时间偏移标准偏差/振动定位分类
数理科学引用本文复制引用
卢骏宏,王义平,刘国强,杜林鍬,戴尚玮,朱润龙,陆丹霞,饶兴,刘涵洁,陈宇徽..基于敲击振动的长距离分布式定位方法[J].深圳大学学报（理工版）,2026,43(2):187-195,9.基金项目
National Key Research and Development Program of China(2022YFE0111400) （2022YFE0111400）
National Natural Science Foundation of China(W2532046,62275172,U22A2088) （W2532046,62275172,U22A2088）
Shenzhen Basic Research Foundation(JCYJ20241202124408012,JCYJ20220818095800001) （JCYJ20241202124408012,JCYJ20220818095800001）
Shenzhen Science and Technology Program(Shenzhen Key Laboratory of Ultrafast Laser Micro/Nano Manufacturing ZDSYS20220606100405013) （Shenzhen Key Laboratory of Ultrafast Laser Micro/Nano Manufacturing ZDSYS20220606100405013）
Scientific Instrument Developing Program of Shenzhen University(2023YQ027) （2023YQ027）
LingChuang Research Project of China National Nuclear Corporation 国家重点研发计划资助项目(2022YFE0111400) （2022YFE0111400）
国家自然科学基金资助项目(W2532046,62275172,U22A2088) （W2532046,62275172,U22A2088）
深圳市基础研究计划资助项目(JCYJ20241202124408012,JCYJ20220818095800001) （JCYJ20241202124408012,JCYJ20220818095800001）
深圳市科技计划资助项目(深圳市超快激光微纳米制造重点实验室ZDSYS20220606100405013) （深圳市超快激光微纳米制造重点实验室ZDSYS20220606100405013）
深圳大学科研仪器研制培育资助项目(2023YQ027) （2023YQ027）
中核领创资助项目 （）
