Do you know what is the biggest advantage of AOI inspection in SMT patch processing?
- By lingsuken
- On 31/03/2021
- In technology
AOI (Auto Optical Inspection) optical inspection system has been widely used in SMT chip processing production lines in the electronics industry to replace the previous manual visual inspection operations. AOI uses imaging technology to determine whether the test object meets the standard by comparing whether there is too much difference between the test object and the standard image.SunzonTech\'s use cutting-edge technology to guarantee high speed and precision with FPC special detection logic and defect analysis.
In the early days, AOI was mostly used to inspect the surface printing of IC (integrated circuit) packaging for defects. With the evolution of technology, it is now used to inspect the assembly of parts on the circuit board (PCBA) on the SMT assembly line. ssembly), or check whether the solder paste meets the standard after printing.
The biggest advantage of AOI is that it can replace the manual visual inspection before and after the SMT furnace, and it can judge the shortcomings of SMT parts and assembly more accurately than the human eye. But just like the human eye, AOI can basically only perform surface inspection of the object, so as long as it is a shape that can be seen on the surface of the object, it can be checked correctly, but for hidden under the part or on the edge of the part The solder joints of AOI may be a little weak. Of course, many AOIs can already perform multi-angle photography to increase their ability to detect IC pin tilt and increase the camera angle of some hidden components. Provide more detection rate, but the effect is always not ideal, it is difficult to achieve 100% test coverage rate.
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