Sunday, March 13, 2011

Vision Troubleshooting #5 – the Don’ts

What don’t you do when first called to a vision system that causing problems?

You don’t start changing parameters. Don’t move thresholds or tweak gains and exposure times. Don’t alter lens apertures and never, ever adjust trigger timing.

Unless you know otherwise, you have to assume that the system was working and that something in the environment has changed. The system parameters are software, and software doesn’t just change itself one morning. It’s much more likely to be an image change that’s caused the problems, so start with that and resist the temptation to tweak.

Good luck!

No comments: