CAPABILITIES Top and bottom side Fine pitch BGA PCB Design and PCB Layout of Prototype builds Testing HP 3070 Checksum ICT MEC custom PCB Design and PCB Layout Functional and final test X-ray Special Processes Encapsulation (potting) Confo
Technical Library | 2024-04-29 21:39:52.0
In this paper, we develop and put into practice an Automatic Optical Inspection (AOI) system based on machine vision to check the holes on a printed circuit board (PCB). We incorporate the hardware and software. For the hardware part, we combine a PC, the three-axis positioning system, a lighting device and CCD cameras. For the software part, we utilize image registration, image segmentation, drill numbering, drill contrast, and defect displays to achieve this system. Results indicated that an accuracy of 5µm could be achieved in errors of the PCB holes allowing comparisons to be made. This is significant in inspecting the missing, the multi-hole and the incorrect location of the holes. However, previous work only focusses on one or other feature of the holes. Our research is able to assess multiple features: missing holes, incorrectly located holes and excessive holes. Equally, our results could be displayed as a bar chart and target plot. This has not been achieved before. These displays help users analyze the causes of errors and immediately correct the problems. Additionally, this AOI system is valuable for checking a large number of holes and finding out the defective ones on a PCB. Meanwhile, we apply a 0.1mm image resolution which is better than others used in industry. We set a detecting standard based on 2mm diameter of circles to diagnose the quality of the holes within 10 seconds.
Industry News | 2012-02-16 02:16:41.0
As miniaturization trends continue this course will make technological improvement and design creativity in the PCB production process indispensable. In various markets there is a rising demand for this kind of high-end technology. And as of today, some PCB shops and markets might stand a better chance to differentiate themselves from their competitors.
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Supplier of high precision ceramic, glass, crystal components
Design For Manufacturability And Yield Enhancement. The Design for Manufacturability (DFM) engine searches for fabrication issues and discovers areas where yields may be increased. GraphiCode's Contour Technology produces fast and accurate results f
