Nikitchuk T. Biotechnical pulsohram analysis system based on the phase portraits

PhD thesis on specialty for candidate's degree of technical sciences 05.11.17 - Biological and medical devices and systems. - National technical university of Ukraine "Kyiv polytechnic institute", Ukraine, Kyiv, 2013. The thesis is devoted to the development and improvement of methods and tools for pulse-grams processing and analyzing based on the phase portraits. The work was further developed harmonic three-phase model of pulse wave used to obtain mathematical equations and construct a pulse curves for the most common types of pulse-grams, "equal", "uneven", "high", "low", "slow" and "fast" pulse signals. Based on modeling data received and investigated phase portraits of pulse-grams. A set of quantitative indicators has been formed - criteria analysis of pulse-grams to automatically set the type of pulse, and, on the basis of compliance with the basic types of pulse-grams pathology of the cardiovascular system, to determine the presence/absence of dysfunction. Investigated the possibility of RS-analysis modifications for pulse-grams processing in an environment where noise is an unknown quantity, the method of selection of informative components of pulse-grams under white noise through the use of Hurst's index, allowing a qualitative assessment of pulse signals. The structure and principles of automated biotechnical system analysis of pulse-grams has been developed. Implemented experimental sample and the analysis of real pulse-grams, bringing established and confirmed the effectiveness of the improved method, we prove the correctness of the calculation of phase portraits of pulse-grams model, improved the classification rate criterion, based on the variability characteristics of pulse-grams throughout the diagnostic procedure.