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Vision Systems Questions

Question Asked:

aside from Golden unit, what is the best way to correlate vision systems?

3 Answers

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  • = Answered Questions

Joseph Asor - Technical Sales Manager
jasor [at] sacmiusa [dot] com
(515) 735-6000

Correlate? like a central hub control - where all activities can be monitored? At SACMI we offer Panorama supervisor which allows viewing in just one screen of all SACMI Vision systems installed in a production plant, reporting in real time the main information.

Tobias Kempe - Product Manager Twincat Vision
Beckhoff Automation GmbH & Co. KG
t [dot] kempe [at] beckhoff.com
+49 (5246) 963-7617

If you mean physical correlation, there need's the be some kind of calibration. If you mean data exchange, it depends heavily on the system you use. E.g. in Beckhoff's TwinCAT Vision you can develop multiple vision stations at once in one engineering environment and monitor all stations aggregated in one HMI.

David Dechow - Principal Vision Systems Architect
Integro Technologies
ddechow [at] integro-tech [dot] com
(704) 636-9666

Hello Jay; I believe by correlation you mean the actual validation of your machine vision inspection system's performance. This is a topic that I won't be able to answer in this limited Q&A format, but the short response is that in some applications a set of "golden" parts is the correct way to validate system performance. This works well particularly in cases where the vision task is a "go/no-go" inspection or an inspection for well-defined defects or features. For more subjective inspections, a regular statistical analysis of accepted and failed part samples can provide some validation of performance. For measurements, the vision system reliability should be validated using standard MSA (measurement systems analysis) techniques and statistics like a Gauge R&R, P/T (precision/tolerance) analysis or others. If you'd like to discuss further, feel free to contact me directly. Best Regards, David

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