AOI(自动光学检测设备)的特点及应用

AOIThe full name is automatic optical detection system, which is composed ofIndustrial cameras, industrial lenses, visual light sources, computersA simple optical imaging and processing system integrated with other general-purpose devices. The camera is used to directly image the image under light source illumination, and then the computer processes it to achieve detection. The advantages of this simple system are low cost, easy integration, and relatively low technical threshold. It can replace manual inspection in the manufacturing process and meet the requirements of most occasions.

AOI visual inspection equipment can provide offline and online inspection solutions according to customer needs to improve production efficiency and welding quality, reduce costs, and ensure the final quality of products.

Working characteristics of AOI (automatic optical inspection equipment)

1. The detection speed is very fast and is not affected by the mounting density;

2. Fast and convenient editing system, graphical interface, WYSIWYG, automatic detection program compilation using placement data;

3. For different detection items, combined with the optical imaging processing system, there are different detection methods (detection algorithms);

4. When the mounting position of the component under test is offset, the detection window will be automatically positioned to achieve high-precision detection;

5. Display actual error images to facilitate workers’ final visual inspection;

6. Statistically analyze NG data and analyze the causes of defects, and provide real-time feedback of process information.

Application fields of AOI (automatic optical inspection equipment)

The general process of AOI detection equipment is the same, mostly through pattern recognition method. That is, the standard digital image stored in the AOI system is compared with the actual detected image to obtain the detection result. AOI inspection equipment is an automatic optical inspection device used on surface mount production lines. It can detect printing quality, placement quality and solder joint quality very efficiently. By using AOI as a defect reduction tool, errors can be found and eliminated at the beginning of the assembly process to achieve good process control. If defects can be detected at an early stage, defective products can be avoided from being sent to the assembly stage of the subsequent process. AOI electrical testing machines will reduce repair costs and avoid scrapping irreparable circuit boards.