Electronics > Mechanical & Automation Engineering
Clear Tape Detection
DrG:
Interesting challenge and solution discussion. Not sure I have much to add....
I was looking at this video and it is impressive. In a practical sense, the commercial sensors may be the way to go although adapting it to your set up could be challenging.
But using one is no fun (for me) and thinking about alternatives is more interesting.
What about three (it could be done with two) still cameras images taken from a fixed location and each with a matched light source. The positions are the center of where the tape should be and two positions on the periphery where the cardboard should be. A quick analysis of the "glare" (i.e., brightness) of the photos might identify tape vs. no tape quite accurately, and relatively cheaply. Maybe two or three image sensors in lieu of cameras... and if the comparative difference is large enough, simpler light sensors could be tried, but always measuring a delta between two (or three) sensors.
BeBuLamar:
In the video they use the thru beam method which is not possible in the OP case. You can put a reflector on the other side of the tape once you tape the box.
tszaboo:
--- Quote from: PBn on October 03, 2019, 09:09:02 pm ---Anyone have thoughts or other ideas?
--- End quote ---
Replace clear tape with brown tape.
fcb:
Have you checked to see what it looks like under UV. I'm constantly surprised by what glows and wot don't.
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