During the presence inspection, a product is checked for completeness. Usually, this happens right after an assembly step to remove incorrect parts from the production process or send it to a rework place as quickly as possible.
![](/images/anwendungen/anwesenheit/anwesenheit_render1.png)
![](/images/anwendungen/anwesenheit/anwesenheit_render2.png)
A presence inspection is a kind of completeness inspection. The product is complete, if the part which can be examined is present. Frequently a presence check is linked also with a position or location inspection.
The following images show an example of a presence inspection of caps on plastic bottles.
![](/images/anwendungen/anwesenheit/anwesenheit_ok.jpg)
Product is complete
![](/images/anwendungen/anwesenheit/anwesenheit_keine_kappe.jpg)
No cap exist
![](/images/anwendungen/anwesenheit/anwesenheit_nur_ring.jpg)
Ring exists but cap is missing
![](/images/anwendungen/anwesenheit/anwesenheit_kein_ring.jpg)
Cap is not complete (no ring)
The following images show an example of an inspection of presence of holes in body side.
![](/images/anwendungen/anwesenheit/seitenteil1.png)
Body side with check positions
![](/images/anwendungen/anwesenheit/stanzloch2d1.png)
2D Image with punch hole (Position Pass)
![](/images/anwendungen/anwesenheit/stanzloch3d1.png)
3D Image with punch hole (Position Pass)
![](/images/anwendungen/anwesenheit/stanzloch2d2.png)
2D Image with punch hole (Position Fail)
![](/images/anwendungen/anwesenheit/stanzloch3d2.png)
3D Image with punch hole (Position Fail)
The following video shows a highspeed presence and print inspection done with a vision sensor.