Novel distributed optical fiber acoustic sensor array for leak detection

Lijun Hang; Cunfu He; Bin Wu

doi:10.1117/1.2920390

1 May 2008 Novel distributed optical fiber acoustic sensor array for leak detection

Lijun Hang, Cunfu He, Bin Wu

Author Affiliations +

Optical Engineering, Vol. 47, Issue 5, 054401 (May 2008). https://doi.org/10.1117/1.2920390

Abstract

We develop an in-line distributed optical fiber acoustic sensor array based on Sagnac interferometer use it to measure and locate leaks for the fluid-filled (or gas-filled) pipelines in real time. The advantage of the sensor array is that it can monitor two or many pipelines at the same time. The traditional loop Sagnac interferometer is changed into in-line structure by a Faraday rotator mirror. The representation of phase change caused by leakage is formulated for optic signal; the measuring principle and the leaking source location method for the sensor array are analyzed. An experiment is designed to detect and locate leaks. The results verify that the system can realize leak detection and locate leak accurately, and the error is less than 0.54%.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Lijun Hang, Cunfu He, and Bin Wu "Novel distributed optical fiber acoustic sensor array for leak detection," Optical Engineering 47(5), 054401 (1 May 2008). https://doi.org/10.1117/1.2920390

Published: 1 May 2008

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE