System and method for inspecting the interior surface of a pipeline
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United States of America Patent
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Jan 1, 2013
Grant Date -
Jun 24, 2010
app pub date -
Nov 20, 2007
filing date -
Nov 20, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An inspection system for inspecting an interior surface of a pipeline has a frame adapted to travel in the pipeline and an imaging means for imaging a selected portion of the interior surface of the pipeline. The imaging means has a field of view and is mounted in a rotatable manner on the frame. The inspection system has with a two-dimensional pattern generator for generating a two-dimensional pattern projection. The generator is mounted with the imaging means to project the two-dimensional pattern projection in the field of view thereof. The imaging means provide images of the selected portion of the internal surface comprising the two-dimensional pattern projection for monitoring a perpendicularity of the optical axis of the imaging means with respect to the selected portion of the interior surface of the pipeline thanks to a shape of the two-dimensional pattern projection prior to inspection of the internal surface.
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