AOI equipment manufacturers introduce the advantages and disadvantages of AOI detector testing
Author:sannes Time:2021-06-08 13:32 Browse(714)
AOI equipment manufacturers introduce the advantages and disadvantages of AOI detector testing, touch screen and OLED forum
Advantages: the biggest advantage of AOI testing equipment is very short test program development time and flexibility.

AOI equipment manufacturers introduce the advantages and disadvantages of AOI detector testing

now AOI system adopts advanced vision system, new light supply mode, increased magnification and complex algorithm.
thus, it can obtain high defect capture rate with high testing speed.
AOI system can detect the following errors:9 X! i8 u. Q9 ~. j( a# d! L & W% L1, component missing, tantalum capacitor polarity error, solder pin positioning error or deflection, pin bending or folding, excessive or insufficient solder, solder joint bridging or false soldering, etc.
- S $z% e # T6 T - i9 Z; F$ W' @1 X2 w2. AOI can not only detect the defects that can not be detected by visual inspection.
AOI can also collect and feed back the work quality of each process and the types of defects in the production process for analysis and management by process control personnel.
AOI can also collect and feedback the work quality of each process and the types of defects in the production process2 O+ F3 x9 f5 P# j7 a- F- c( f; {; l5 ~         Disadvantages: AOI equipment system can't detect circuit errors.
at the same time, it can't detect invisible solder joints.
and after investigation, it is found that there are some problems in the practical application of AOI testing technology: 1 R3 | 9 C "J4 w! Q1. AOI requires high test conditions, for example, when PCB warps, it may cause test failure due to the change of focus, and if the test conditions are relaxed, the test purpose can not be achieved.
/ S3 I (N2 b)    j6 g2. AOI can judge whether a component is wrongly attached by identifying its shape or textIf the component type changes frequently (such as components provided by different companies), it is necessary to change the component library parameters frequently, otherwise it will lead to misjudgment.
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