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TestRun for Vision Systems

Photonics.com
Oct 2011
Cognex Corp.Request Info
 
NATICK, Mass., Oct. 7, 2011 — Cognex Corp. has introduced a new feature for its In-Sight vision systems that allows manufacturers to easily and automatically test the vision system and verify that it is functioning correctly. Users can confirm program changes by quickly checking against the “baseline” configuration.

TestRun also makes it easy for systems integrators and OEMs to demonstrate that the vision system meets the acceptance criteria when it is installed at the end user’s facility, and machine operators can minimize bad results by easily checking that the vision hardware is performing properly. The function also assists quality managers in identifying “borderline” inspections and in refining pass/fail criteria.

Achieving consistent vision system performance depends on maintaining uniform image quality. Vision programs can contain many setup parameters. TestRun assigns range limits to these parameters and confirms that the current setup parameters are within the expected limits.

In image inspection, it provides application validation against an image database. A library of “challenge” images includes examples of good and bad parts. Reference images of bad parts can be further graded by the specific defects present in the part. Each image in the library is evaluated by the current vision program, and TestRun confirms that its results match the expected results.

Machine operators now can manage myriad changes on the factory floor and maintain the reliability of their inspection systems with little effort. TestRun logs changes and provides validation after any change or regular checkup, helping quality managers avoid costly and lengthy validation processes.

Users can set up a test routine configuration with TestRun in In-Sight Explorer 4.6 or later using a simple setup wizard, with no special spreadsheet programming required. After setup, routines can be performed from In-Sight Explorer to verify the test routine or to check program changes. Detailed results may be viewed in the In-Sight Explorer Palette pane.

The VisionView operator interface is used to execute TestRun on the shop floor. TestRun alerts the operator if there are any conditions that could negatively affect the operation of the vision system. With the TestRun Plug-in, an operator can perform the test routines on all systems attached to the VisionView, with no custom human-machine interface programming or setup required. The plug-in automatically detects the presence of the TestRun configuration on cameras.



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