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Distributed Vibration Sensor Based on Coherent Detection of Phase-OTDR
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.
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Cited by
Distributed optical fiber sensing: Review and perspective
Lu, P., Lalam, N., Badar, M., Liu, B., Chorpening, B. T., Buric, M. P., & Ohodnicki, P. R. (2019) · Applied Physics Reviews · doi:10.1063/1.5113955 · Cited by 851
One-Dimensional CNN-Based Intelligent Recognition of Vibrations in Pipeline Monitoring With DAS
Wu, H., Chen, J., Liu, X., Xiao, Y., Wang, M., Zheng, Y., & Rao, Y. (2019) · Journal of Lightwave Technology · doi:10.1109/jlt.2019.2923839 · Cited by 267
Ultrafast, sub-nanometre-precision and multifunctional time-of-flight detection
Na, Y., Jeon, C.-G., Ahn, C., Hyun, M., Kwon, D., Shin, J., & Kim, J. (2020) · Nature Photonics · doi:10.1038/s41566-020-0586-0 · Cited by 120
Distributed fiber-optic sensor for detection and localization of acoustic vibrations
Sifta, R., Munster, P., Sysel, P., Horvath, T., Novotny, V., Krajsa, O., & Filka, M. (2015) · Metrology and Measurement Systems · doi:10.1515/mms-2015-0009 · Cited by 33
Metadata
- Authors
- Lu, Y., Zhu, T., Chen, L., & Bao, X.
- Venue
- Journal of Lightwave Technology
- Published
- 2010-11
- ISSN
- 0733-8724 (ISSN-L)
- 1558-2213
- OpenAlex
- W2126321128
- Cited by
- 735
- References
- 0
- FWCI
- 7.72
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lu, Y., Zhu, T., Chen, L., & Bao, X. (2010). Distributed Vibration Sensor Based on Coherent Detection of Phase-OTDR. Journal of Lightwave Technology. https://doi.org/10.1109/jlt.2010.2078798
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