How to differentiate between flux, dust & impression...?

[Rupali]

Hello... 🙂

     I'm using Vision Builder 3.5 & Camera with 3M pixel..... My problem is I have to check two carbon tracks on PCB for OK codition... there are three solder joints near the carbon tracks so I have to check that there is no flux on the tracks... But I'm not able to differentiate between flux, dust & impression... Is there any way to differentiate between flux, dust & impression...?

   Thanks for any help from you.. 🙂

[AnalogKid2DigitalMan]

Can you post some sample images? The color of the flux may be unique, dust and impressions may show up with darkfield lighting.

Without seeing your scenario, it's hard to tell.

-AK2DM

[Rlima]

   Hello Rupali...

       It would be veru helfull if you could post some sample images,   The camera resolution is very good,  is the camera  color or monochrome

       also what lens are you using? you may play with the lighting 

       Just thinking with out seeing the images,  you can use a zoom lens so you can zoom the image and get more definition...

        Best Regards...  

[Rupali]

Hello.. 🙂

    Thanks for reply... 🙂 The camera is color & i'm using adjustable lens for zoom in & out... using ring light white color... here are some pictures... 🙂

[Rupali]

Here is another with flux image..

[Rupali]

I'll send you some more picture from the actual camera I'm using on production line... With the changes I have made through software... Right I'm playing with intensity part.. It detects the dust & flux very accurately.. But gives problem with wiper impression which are made during PCB testing... & those are present on 100% PCB... On some PCB's they are very dark... In that case my software gives false calls... n I want to avoid this... Can you help please...?

[Rlima]

                 Hi Rupali....

                 I take a look to the image you post,  

                 The two carbon path are in very good shape to inspect using geometric match.  then you can try intensity on you inspection

                 any way can you post some pictures taken with the camera  that you have in the production line.

                 Best Regards..

[Rupali]

Hello Rlima...

     I have taken the pictures but they are in .bmp type n don't have converter to convert bmp to jpg.. I tried some free downloads but they does not working properly... And adding bmp files will occupy lot of space... 😞 what should I do now...?

[Rupali]

Hey got the solution... 🙂

[Rupali]

Here is another...