Share Email Print
cover

Proceedings Paper

Localization of methane distributions by spectrally tuned infrared imaging
Author(s): Werner Gross; Thomas Hierl; H. Scheuerpflug; U. Schirl; Oliver Schreer; Max J. Schulz
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present a novel method, the Gas Imaging (GIm) method, developed for the localization of gas distributions in the atmosphere. The method is suitable for the detection of a gases which exhibit at least one absorption line in the IR spectral range. In this paper the GIm method is demonstrated for methane released into the atmosphere from leaks along natural gas pipelines. Methane distributions in the atmosphere around the leaky pipeline are detected and visualized by spectrally tuned IR imaging. In contrast to conventional techniques which utilize laser radiation sources or scanning, we irradiate the overall region under investigation by 1 kW halogen lamps. The scene background is subtracted by a real-time computer evaluation of the image. The methane gas emitted from the leak creates a flickering cloud in the image which is easily recognized. Methane concentrations as low as 0.03 percent by volume are visible. The method was successfully tested under realistic conditions on a buried pipeline by a natural gas provider.

Paper Details

Date Published: 18 January 1999
PDF: 7 pages
Proc. SPIE 3533, Air Monitoring and Detection of Chemical and Biological Agents, (18 January 1999); doi: 10.1117/12.336861
Show Author Affiliations
Werner Gross, Bavarian Ctr. for Applied Energy Research (Germany)
Thomas Hierl, Bavarian Ctr. for Applied Energy Research (Germany) and Thermosensorik GmbH (Germany)
H. Scheuerpflug, Bavarian Ctr. for Applied Energy Research (Germany)
U. Schirl, Bavarian Ctr. for Applied Energy Research (Germany)
Oliver Schreer, Bavarian Ctr. for Applied Energy Research (Germany) and Thermosensorik GmbH (Germany)
Max J. Schulz, Bavarian Ctr. for Applied Energy Research (Germany) and Univ. Erlangen (Germany)


Published in SPIE Proceedings Vol. 3533:
Air Monitoring and Detection of Chemical and Biological Agents
Joseph Leonelli; Mark L.G. Althouse, Editor(s)

© SPIE. Terms of Use
Back to Top