Abstract
The article examines the structural and functional diagrams of the device for diagnosing existing and prospective typical digital replacement elements, which contain microprocessor-based on large integrated circuits and are part of the radio-electronic equipment of the Armed Forces of Ukraine. The principle of operation of the device is based on the use as diagnostic information of initial reactions (IR) of object of diagnosis and parameters of the energy-dynamic process. The use of two power supply voltages and the step-by-step construction of the test sequence (TS) makes it possible to make a decision about the operational efficiency of the object of diagnosis with reliability no lower than specified for an acceptable time. Decision-making about the technical condition of a typical replacement element and localization of defects is carried out with the help of a personal computer based on the theory of fuzzy logic. The computer is the core that provides the analysis of the available and received diagnostic information, the formation of test sequences (TS) and decision-making about the technical condition of the object of diagnosis. It allows you to quickly process a large amount of diagnostic information, carry out its analysis, storage and replenishment due to the knowledge of experts and the accumulation of statistics. This makes it possible to exclude some elementary test effects, the need for which is eliminated based on the results of the obtained data, as well as to reduce the number of sets in the TS, which leads to a reduction in diagnosis time. Step-by-step execution of commands and current analysis of the situation allows not only to carry out diagnostics up to the first faulty element, but also makes it possible to conduct a further search for faulty elements. The advantage of the proposed device is the possibility of increasing the reliability of diagnosis without increasing its duration.
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