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Figure 6. Reflection pattern on meniscus model with RGB ring illumination

Using reflection patterns is the basis of all papers that have been published in this field of

study. There are two solutions: gray-scale or colour inspection. Supplier and appliances are

shown in Table IV [124]-[126].

One interesting area is wave soldering. It needs different types of algorithms because of the

circular solder shape and the pin. Some solutions for this kind of inspection are reported in

[127]-[129]. A summary of possible failures and appliances that can detect them are shown in

Table V.

6.4. Combined appliances

There are systems that are able to inspect more sequences. These are combined systems, namely

API&PSI [140]-[146] (Table VI).

And the all-in-one machines are the UAOI systems, detailed: SPI&API&PSI [147]-[163] (Table

VII).

Automatic Optical Inspection of Soldering

http://dx.doi.org/10.5772/51699

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