Abstract

We developed a distributed vibration sensor by using heterodyne detection and signal processing of moving averaging and moving differential for the phase optical time domain reflectometry system. The broadband acoustic frequency components generated by pencil-break vibration have been measured and identified in location by our distributed vibration sensor for the first time. Pencil break measurement is a standard technique to emulate the acoustic emission of cracks in concrete or steel bridges for early crack identification. The spatial resolution is 5m and the highest frequency response is 1 kHz, which is limited by the trigger frequency of data acquisition card. This new sensing system can be used for vibration detection of health monitoring of various civil structures as well as any dynamic monitoring requirement.

© 2010 IEEE

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2008 (1)

Z. Zhang, X. Bao, "Distributed optical fiber vibration sensor based on spectrum analysis of Polarization-OTDR system," Opt. Exp. 16, 10240-10247 (2008).

2007 (1)

2005 (1)

J. C. Juarez, E. W. Maier, K. N. Choi, H. F. Taylor, "Distributed fiber-optic intrusion sensor system," J. Lightw. Technol. 23, 2081-2087 (2005).

2004 (1)

D. H. Kim, B. Y. Koo, C. G. Kim, C. S. Hong, "Damage detection of composite structures using a stabilized extrinsic Fabry–Perot interferometic sensor system," Smart Mater. Struct. 13, 593-598 (2004).

2001 (1)

H. Tsuda, J. H. Koo, T. Kishi, "Detection of simulated acoustic emission with Michelson interferometic fiber-optic sensors," J. Mater. Sci. Lett. 20, 55-56 (2001).

1998 (1)

1997 (1)

H. Izumita, Y. Koyamada, S. Furukawa, "Stochastic amplitude fluctuation in coherent OTDR and a new technique for its reduction by stimulating synchronous optical frequency hopping.," J. Lightw. Technol. 15, 267-277 (1997).

1996 (1)

1990 (1)

Y. Koyanada, H. Nakamoto, "High performance single mode OTDR using coherent detection and fiber amplifiers," Electron. Lett. 26, 573-574 (1990).

1984 (1)

P. Healey, "Fading in heterodyne OTDR," Electron. Lett. 20, 30-32 (1984).

1977 (1)

M. K. Barnoski, M. D. Rourke, S. M. Jensen, R. T. Melville, "Optical time domain reflectometer," Appl. Opt. 46, 2375-2380 (1977).

Appl. Opt. (3)

Electron. Lett. (2)

P. Healey, "Fading in heterodyne OTDR," Electron. Lett. 20, 30-32 (1984).

Y. Koyanada, H. Nakamoto, "High performance single mode OTDR using coherent detection and fiber amplifiers," Electron. Lett. 26, 573-574 (1990).

J. Lightw. Technol. (2)

H. Izumita, Y. Koyamada, S. Furukawa, "Stochastic amplitude fluctuation in coherent OTDR and a new technique for its reduction by stimulating synchronous optical frequency hopping.," J. Lightw. Technol. 15, 267-277 (1997).

J. C. Juarez, E. W. Maier, K. N. Choi, H. F. Taylor, "Distributed fiber-optic intrusion sensor system," J. Lightw. Technol. 23, 2081-2087 (2005).

J. Mater. Sci. Lett. (1)

H. Tsuda, J. H. Koo, T. Kishi, "Detection of simulated acoustic emission with Michelson interferometic fiber-optic sensors," J. Mater. Sci. Lett. 20, 55-56 (2001).

Opt. Exp. (1)

Z. Zhang, X. Bao, "Distributed optical fiber vibration sensor based on spectrum analysis of Polarization-OTDR system," Opt. Exp. 16, 10240-10247 (2008).

Opt. Lett. (1)

Smart Mater. Struct. (1)

D. H. Kim, B. Y. Koo, C. G. Kim, C. S. Hong, "Damage detection of composite structures using a stabilized extrinsic Fabry–Perot interferometic sensor system," Smart Mater. Struct. 13, 593-598 (2004).

Other (2)

C. S. Baldwin, A. J. Vizzini, "Acoustic emission crack detection with FBG," Proc. SPIE (2003) pp. 133-143.

H. F. Tarlor, C. E. Lee, Apparatus and Method for Fiber Optic Intrusion Sensing U.S. Patent 5194847 (1993).

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