20.500.12556/RUL-182007 Razvoj in uporaba elektronskih nosov za zaznavanje hlapnih organskih spojin Development and applications of electronic noses for the detection of volatile organic compounds V magistrskem delu se osredotočamo na razvoj in uporabo elektronskih nosov, ki služijo kot imitacije olfaktornih sistemov. V začetnem delu naloge se posvetimo motivom za uporabo elektronskih nosov, katerih zaznava temelji na absorpciji hlapnih organskih molekul na površini senzorjev. Nato si podrobneje pogledamo delovanje elektronskega nosu, na katerem so bile izvedene meritve predstavljene v magistrskem delu. V okviru naloge se osredotočamo na testiranje občutljivosti senzorjev na biološke vzorce, ko analiziramo izdihan zraka na tešče in po kajenju. Pred tem z meritvami destilirane vode testiramo še ustreznost delovanja sistema. Cilj naloge je preveriti, ali sistem lahko razlikuje med destilirano vodo in človeškim izdihom, nato pa še med različnimi izdihi. Rezultate obravnavamo statistično, tako da na podlagi povprečnih vrednosti meritev opravimo test Welcheve ANOVA, ki nam bo povedal, ali so povprečja meritev vzorcev na posameznem senzorju različna ali ne. Nazadnje preverimo še ločevanje vzorcev s pomočjo analize glavnih komponent. In this master’s thesis, we focus on the development and application of electronic noses, which serve as imitations of olfactory systems. In the first part of the thesis, we examine the motivations for using electronic noses, whose detection is based on the absorption of volatile organic molecules on the surface of sensors. We then examine in detail the operation of a specific electronic nose on which the measurements presented in this thesis were performed. As part of the thesis, we focus on testing the sensitivity of the sensors to biological samples, analyzing exhaled air both on an empty stomach and after smoking. Prior to this, we test the system’s operational suitability based on measurements of distilled water. The objective of the project is to verify whether the system can distinguish between distilled water and human exhaled breath, and subsequently between different types of exhaled breath. We analyze the results statistically by performing Welch’s ANOVA based on the average measurement values, which will tell us whether the sample averages for each sensor differ or not. We then also verify the separation of the samples using principal component analysis (PCA). elektronski nos VOC PCA statistična analiza Welcheva ANOVA olfaktorni sistem electronic nose VOC PCA statistical analysis Welch ANOVA olfactory system true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-04-22 08:15:07 2026-04-22 08:15:16 2026-04-23 04:26:23 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 159673 275996419 21384.pdf 21384.pdf 1 DEC0FFA147DB9592774F856E5E8D1427 33ab65e7e062eba096961cae41fbefda131a5b22e90791aa269e36a55ff89ed0 64f1cadd-3e12-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=232872 Fakulteta za matematiko in fiziko 0 0 0