MULTIPLEXED FIBER OPTIC OTDR SENSORS FOR MONITORING OF SOIL SLIDING |
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| Il-Bum Kwon, Chi-Yeop Kim, Dae-Cheol Seo, Hyo-Chang Hwang |
- Abstract:
- Fiber optic optical time domain reflectometry (OTDR) sensors are suitable to apply the distributed measurement by multiplexing configuration. OTDR sensor system with displacement sensors has been developed to monitor slope stability in soil layers. The displacement was determined from the difference between the reflected signal of the sensing optical connector and the signal of the reference optical connector. Laboratory tests indicate that displacements can be measured with the resolution of several mm and the maximum measurable displacement is about 10 cm, which is enough to apply for the monitoring of soil movements.
- Keywords:
- OTDR sensor, displacement, multiplexing
- Download:
- PWC-2006-TC20-002u.pdf
- DOI:
- -
- Event details
- Event name:
- XVIII IMEKO World Congress
- Title:
Metrology for a Sustainable Development
- Place:
- Rio de Janeiro, BRAZIL
- Time:
- 17 September 2006 - 22 September 2006