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基于超声导波的气体泄漏定位技术(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2017年6期
页码:
513-518
栏目:
出版日期:
2017-11-15

文章信息/Info

Title:
Continuous Gas Leakage Location Technique Based on Ultrasonic Guided Waves
文章编号:
1672-6030(2017)06-0513-06
作者:
张宇 王佳强 边旭
精密测试技术及仪器国家重点实验室(天津大学), 天津 300072
Author(s):
Zhang Yu Wang Jiaqiang Bian Xu
State Key Laboratory of Precision Measuring Technology and Instruments (Tianjin University), Tianjin 300072, China
关键词:
超声导波 泄漏定位 波束形成 频散 阵列
Keywords:
ultrasonic guided waves leakage location beamforming dispersion array
分类号:
TH878
DOI:
10.13494/j.npe.20160115
文献标识码:
A
摘要:
为了快速准确定位气体泄漏,提出了一种基于超声导波的泄漏定位方法.使用超声传感器阵列采集泄漏产生的超声导波信号,通过改进的波束形成方法估计泄漏方向,再利用三角定位法通过多个传感器阵列确定泄漏位置.进行泄漏定位实验,通过实验确定了定位计算时窄带滤波的带宽为20 kHz.实验表明,在长宽为1 m×1 m的实验平板上,该方法对1~2 mm孔径的漏孔的平均定位误差小于10 mm,实现了对气体泄漏声源的准确定位.
Abstract:
To locate the position of gas leakage efficiently and accurately, a leakage locating method based on ultrasonic guided waves is proposed. The leakage direction is estimated by the improved beamforming method, and the position of the leakage is determined by the triangulation method through multiple sensor arrays. Experimental results show that the frequency bandwidth used in the positioning calculation is 20 kHz, and that the average location error of the method is less than 10 mm for the 1—2 mm aperture leakage holes on the 1 m×1 m test plate, realizing the accurate location of the gas leakage source.

参考文献/References

备注/Memo

备注/Memo:
收稿日期: 2017-09-11. 基金项目: 天津市应用基础与前沿技术研究计划青年基金资助项目(14JCQNJC04800). 作者简介: 张宇(1982—)男,博士,讲师. 通讯作者: 张宇,zhangyu@tju.edu.cn.
更新日期/Last Update: 2017-12-21