Planar location of the simulative acoustic source based on fiber optic sensor array

被引：5

作者：

Liang, Yi-Jun ^{[1
]}

Liu, Jun-feng ^{[1
]}

Zhang, Qiao-ping ^{[1
]}

Mu, Lin-lin ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Sci, Harbin 150001, Peoples R China

来源：

OPTICAL FIBER TECHNOLOGY | 2010年 / 16卷 / 03期

关键词：

Acoustic emission (AE); Fiber optic sensor; Location of AE source; Sensor array; Sagnac interferometer; EMISSION; LOCALIZATION; COMPOSITE; CONCRETE; SYSTEM;

D O I：

10.1016/j.yofte.2010.02.004

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A fiber optic sensor array which is structured by four Sagnac fiber optic sensors is proposed to detect and locate a simulative source of acoustic emission (AE). The sensing loops of Sagnac interferometer (SI) are regarded as point sensors as their small size. Based on the derived output light intensity expression of SI, the optimum work condition of the Sagnac fiber optic sensor is discussed through the simulation of MAT-LAB. Four sensors are respectively placed on a steel plate to structure the sensor array and the location algorithms are expatiated. When an impact is generated by an artificial AE source at any position of the plate, the AE signal will be detected by four sensors at different times. With the help of a single chip microcomputer (SCM) which can calculate the position of the AE source and display it on LED, we have implemented an intelligent detection and location. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：140 / 145

页数：6

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