ELECTRONICS AOI

System is trained with a sample of "good" PCB, then it can identify the defects on other PCB. Left: the input image. Right: a small piece (around 0.5 mm) of foreign material is detected in red box. (The images are cropped for illustration.)

Introduction

Quality is at heart of all companies to deliver the best to customers. Most of time, the process includes human inspection on the products. Naturally, it is prone to human error. Machine vision can assist this process by performing automated optical inspection (AOI) on PCB to detect defects on components and solders, then notify the operators.

Application

• PCB: hole, trace
• Component: presence, type, polarity, alignment, placement
• Solder: presence, insufficient/excessive solder, shape, bridge, ball
• Silkscreen: presence, position, size
• Foreign materials

Key Features

• Applicable with 0.6 x 0.3 mm component and larger
• Support high components: 50 mm clearance on both sides
• Auto-align to minor PCB misplacement

Sample Setup*

Image System

• 5MP Camera
• RGB ring light

Camera Movement

• Gantry style
• Timing belt
• 3 stepper motors with drivers for X & Y

PCB Handling

• Manual PCB loading
• Manual PCB width adjustment

PCB

• Maximum size: 220 x 240 mm
• Clearance top / bottom: 50 / 50 mm

Inspection

• Coverage per shot: 28.5 x 21.4 mm and larger (constrained by defect size)
• Applicable size: 0.6 x 0.3 mm components and larger
• Speed: 400 ms / shot

* Setup can be adjusted to your need