BUILDING INFORMATION MEASUREMENT SYSTEM DETECTING DEFECTS
DE-CONDUCTIVE PATTERN OF PRINTED CIRCUIT BOARDS 

Danilova Evgeniya Anatol'evna, senior lecturer, sub-department of radio equipment design and production, Penza State University (40 Krasnaya street, Penza, Russia), kipra@mail.ru

 681.2.082

Background. 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.
Materials and methods. To solve this problem uses morphological image processing techniques, computer simulation, in particular, the finite element method and the methods of fuzzy logic. For thenumerical solution using software package ANSYS.
Results. The concept of latent defect PCBs. Improved facet classification PCB defects. A technique of detection of latent defects in printed circuit boards. A block diagram of the information-measuring PCB control system.
Conclusions. 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 information measurement scheme implements the proposed method.

printed circuit boards, latent defects, external influencing factors, mathematical model, control technique, information-measuring system