AOI
(Automated Optical Inspection)Machine vision system that inspects PCBs for defects by comparing images against reference designs.
Definition
Automated Optical Inspection (AOI) uses cameras and image processing to detect manufacturing defects on PCBs. The system compares captured images against CAD data or golden samples to identify issues like missing components, solder bridges, tombstoning, and incorrect polarity. AOI is used at multiple stages: after solder paste application, after component placement, and after reflow soldering.