Glossary · Machine vision
Completeness check
Also known as: Assembly verification, Kit check
German: Vollständigkeitsprüfung
In manufacturing and machine vision, a completeness check verifies that all required components, features or items are present in an assembly, package or kit, typically by checking a list of expected features at defined positions.
- Machine vision
In one sentence
A completeness check verifies that all required parts, features or items are present in an assembly, package or kit.
Example
Before the housing is closed, a completeness check confirms that all six screws, the seal and the label are in place.
How it applies
- Engineering: A completeness check combines several presence checks with the product variant: the vision system must know which features the current variant requires. Checks for small parts such as clips or washers need lighting that makes them contrast reliably with the background.
- Operation: Variant data comes from the line control or MES; a wrong variant selection makes a correct part fail or an incomplete part pass.
- Documentation: The documentation team should document the checked features per variant, how variant data reaches the vision system and how rejects are handled and reworked.
Completeness check vs. presence check
A Presence check asks whether one feature is there. A completeness check asks whether everything required is there, usually by combining many presence checks for the product variant.