I have 2.5 meter long height, 5cm radius cylinder. This cylinder can be used as a trashcan and I want to install an Ultra Sonic Ranger like SRF05 to see how much space left in it.
Cylinder has long height compared to radius and SRF sensor will be installed on the top of cylinder. And I read these sensors have a coverage angle of 15degrees.
Would it be possible if sensor's beam angle produce a false distance by hitting Cylinder walls before actually reaching the bottom of the object? I mean Cylinder is really slender and I'm worried about the surface around since SRF sends beam in a 15degree circular angle instead of linear straight line.
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It would be great if it could detect in a straight line.