Imaging of fugitive gas leaks

Details Imaging of fugitive gas leaks Imaging of fugitive gas leaks

G - Physics

01

N

G01N 21/25 (2006.01) G01M 3/38 (2006.01) G01N 21/84 (2006.01)

Patent

CA 2509436

The invention relates to an imager system for imaging of a plume of a fugitive gas, dependent upon an electromagnetic wavelength absorption characteristic of the gas. A bi-spectral selector assembly houses first and second filters in separate first and second optical paths for transmittal of electromagnetic energies emanating from the scene of interest. The first and second filters have adjacent mutually exclusive narrow band pass characteristics only one of which corresponds to the electromagnetic wavelength absorption characteristic of the gas. An imager captures first and second image data having traversed the first and second filters in a frame which is then processed by correlating the image data to provide displayable data including an indication of any plume of the fugitive gas. The data is displayed in real time. In one example a CCD video camera provides picture data which is displayed with the image of the plume of gas pasted thereupon.

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