NIOSHTIC-2 Publications Search

Fiber optics for atmospheric mine monitoring.

Authors
Dubaniewicz TH; Chilton JE; Dobroski H
Source
IEEE Trans Ind Appl 1993 Jul-Aug; :749-753
NIOSHTIC No.
10004926
Abstract
The authors describe work done to address methane, carbon monoxide, and distributed temperature monitoring. A review is made of the potential and problems of using fiber optics (FOs) for mine monitoring systems. Methane detection is based on differential absorption of infrared light. A methane monitor that can detect concentrations as low as 0.2% as far away as 2 km via FO cable is described. A carbon monoxide monitoring system that combines a low-powered electrochemical cell with fiber optic (FO) telemetry is described. Testing has shown that the system can operate maintenance free for several months. A distributed FO temperature-monitoring system is being investigated for possible application in mine fire detection. Performance of this system at the US Bureau of Mines' Lake Lynn Laboratory is reported. The sensor employs optical time domain reflectometry techniques that allow the entire length of fiber (up to 2 km) to function as a distributed temperature sensor. Distributed temperature sensors have considerable potential for monitoring areas such as conveyor beltways.
Keywords
Mining; Mining industry; Underground mines; Underground mining; Monitoring systems; Mine gases; Methanes; Carbon monoxide; Fire detection; Fire detection systems
CODEN
ITIACR
Publication Date
19930701
Document Type
Conference/Symposia Proceedings
Fiscal Year
1993
Identifying No.
OP 18-94
ISSN
0093-9994
Source Name
IEEE Transactions on Industry Applications
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division