Looped back fiber mode for reduction of false alarm in leak detection using distributed optical fiber sensor.
Optical-fiber-based sensors have inherent advantages, such as immunity to electromagnetic interference, compared to the conventional sensors. Distributed optical fiber sensor (DOFS) systems, such as Raman and Brillouin distributed temperature sensors are used for leak detection. The inherent noise of fiber-based systems leads to occasional false alarms. In this paper, a methodology is proposed to overcome this. This uses a looped back fiber mode in DOFS and voting logic is employed to considerably reduce the false alarm rate.
Chelliah
Pandian
P
Indira Gandhi Centre for Atomic Research, Kalpakkam, India 603102.
Murgesan
Kasinathan
K
Samvel
Sosamma
S
Chelamchala
Babu Rao
BR
Tammana
Jayakumar
J
Nagarajan
Murali
M
Raj
Baldev
B