The construction of information measuring system of defects detection in conductive patterns of printed circuit boards

Modern electronic media are complex systems with a hierarchical structure, one of which elements are printed circuit boards. Their reliability is laid both at the design stage, and the stage of technological control. The aim of the work is to improve the information-measuring PCB control system with the assessment of the impact of technological variations and external factors on the development of operational defects found. To solve this problem morphological image processing techniques, computer simulation, and, in particular, the finite element method and the methods of fuzzy logic are used. For the numerical solution software package ANSYS is applied. The concept of latent defect PCBs is offered. Improved facet classification of PCBs' defects is up-grated. A technique of detection of latent defects in printed circuit boards is described. A structural scheme of the information-measuring PCB control system is proposed in this article. Introduction of the concept latent defect allows you to extend the range of tolerance deviations of the printed track sizes. Methods of detection of defects, including analysis, defect type classification unit and mathematical modeling allows to determine the further development of a latent defect. The proposed structural scheme of information measurement system implements the proposed method.