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US 2003/0226967 A1Published application
Detection of turbulence in fluids
AssigneeInfrared Integrated Systems Limited
InventorNicola Cross
Life of this patent
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Abstract
A method of identifying the presence of turbulence in fluids, e.g. for distinguishing flames from other hot bodies, examines the correlation between adjacent pixels of an array viewing the fluid and particularly the proportion of negative correlation in the presence of strong positive correlation.
Claims14
A method of identifying the presence of turbulence in a fluid comprising:
- forming a two dimensional image of at least part of the fluid divided into a two dimensional array of pixels;
- periodically obtaining a signal indicating the amount of radiation emitted from each part of the fluid corresponding to a pixel;
- for each pair of adjacent pixels, periodically calculating a coefficient relating to the correlation of signals from the two pixels in the pair;
- examining the distribution of correlation coefficient values;
- and
- identifying whether turbulence is present on the basis of the relative proportions of positive and negative correlation values.
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Dependencies are inferred from the claim text.