Cognex
and Microscan both talk a lot about their code reading solutions.
What I’ve not seen though is much explanation of why and how you’d
want to deploy this technology. Now if you’re in the pharmaceutical
industry you probably know this stuff, but if not, I suggest you take
a look at the “What
is Pharma Track-n-Trace”
on the website of Omega Design Corporation.
In
particular, take a look at two of the videos linked from that page.
Start with “OmegaTrack Demo at PEI 2010. Here the President of
Omega takes the viewer through a packaging line, pointing out the
various vision systems employed.
Two
systems on that line caught my eye. The first is the LabelSync Vision
Station. This uses the Cognex OmniView tool to image the full 360 of
the surface of a tablet container. A fifth camera reads the
datamatrix code printed on the bottom of the container and software
compares it with the code on the label.
The
second system is at the end of the line, and unfortunately is not
discussed in any detail. Again, it’s a multi camera system
checking that all the codes are correct. What intrigued me though is
the container codes are read through the clear plastic packaging. If
you’ve ever attempted that task you’ll know it’s decidedly
non-trivial. I’d love to know what lighting they use – would
polarization have a part to play?
So
there you have it: machine vision, actually it’s Cognex machine
vision, in a track-and-trace application. I’m just curious why I
haven’t seen it in any Cognex marketing material.
No comments:
Post a Comment