Community Research and Development Information Service - CORDIS


A review of sensor technologies available to improve environmental monitoring has been addressed within the project reported here. The research approach involved a fundamental review of gas sensing together with in-depth appraisal of in-house developed devices and commercial sensors.
In general terms the research undertaken has significantly advanced the status of optical methane sensing and has provided much needed application knowledge for monitoring each of the gas species considered.
Optical methane sensing, in particular, generic approaches to infrared absorption spectroscopy have been studied to determine whether a high performance integrated optic configuration could be produced at acceptable cost.
Broad-band, comb filter and narrow-band infrared techniques have been investigated.
Comb filters, based on the Fabry Perot and Mach Zehnder interferometer principles, have been modelled.
The use of software filters was investigated but found to be unacceptable.
The work has resulted in a novel, in-house, sensor based on a synthetic radiation source with potentially excellent match to the line structure of methane. A patent application was issued and accepted for this device.

Additional information

Authors: WYKES J, British Coal Corporation, Cheltenham (GB);GIBSON M, British Coal Corporation, Cheltenham (GB);WILLET M, British Coal Corporation, Cheltenham (GB);UNWIN I, British Coal Corporation, Cheltenham (GB)
Bibliographic Reference: EUR 17177 EN (1997) 214pp., FS, ECU 36.50
Availability: Available from the (2)
ISBN: ISBN 92-827-9266-8
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