In manufacturing, AOI stands for Automated Optical Inspection.
AOI is a crucial visual quality control method primarily used for identifying defects that can occur during the PCB manufacturing and assembly stages. This advanced inspection technique ensures the quality and reliability of printed circuit boards by automatically examining their surface.
How Automated Optical Inspection Works
In AOI, a high-resolution camera system is employed to scan the circuit board. The acquired images are then processed and compared against a pre-defined standard or a golden board image. Specialized algorithms analyze the differences to detect potential defects.
Types of Defects Detected by AOI
Automated Optical Inspection is effective in identifying a wide range of visual flaws on the PCB surface. According to the reference, common defects detected include:
- Stains
- Scratches
- Open circuits
- Short circuits
By quickly and accurately identifying these issues, AOI plays a vital role in maintaining high product quality and improving manufacturing yield. It helps manufacturers catch defects early in the process, reducing the need for costly rework or scrap later on.
