20.500.12556/RUL-119129 Točnost in merilna negotovost pri brezkontaktnem merjenju telesne temperature s termovizijskimi kamerami Accuracy and measurement uncertainty of non-contact measurement of body temperature with thermal imaging cameras V magistrskem delu analiziram točnost, merilno negotovost in zanesljivost uporabe termovizijskih kamer pri presejalnem testiranju ljudi z namenom zaznave osebkov s povišano telesno temperaturo. V delu sprva preverim fizikalno podlago termovizije, ki zajema mnoge, realno neizvedljive predpostavke, ki kritično vplivajo na delovanje termovizije. Pri podrobnejšem pregledu človeka se za najprimernejše merilno mesto na obrazu izkažejo notranji kotički očes. Točnost meritve in z njo povezanega matematičnega modela je izračunana oz. ocenjena za štiri namenske in dva splošno-namenska sistema, pri tem pa se upošteva tako merilni inštrument kot merjenec, človek. Vsi doprinosi k negotovosti, ki jih je bilo za dane sisteme mogoče izmeriti, so sešteti v oceno skupne negotovosti pri merjenju in oceni telesne temperature, pri čemer skupne negotovosti ovrednotenih merilnih naprav močno presegajo proizvajalčevo navedeno oz. medicinsko željeno negotovost merjenja ±0,3 °C in segajo tudi do ±2 °C. In this paper, application of uncooled thermal imaging for human body temperature screening is evaluated in terms of accuracy, measurement uncertainty and reliability. Physical theory of contactless thermometry is first analysed for generalisations and assumptions, which often deviate from actual conditions and are practically impossible to assure. Human is further analysed as a measured subject, identifying eye cantus as the most appropriate facial measurement spot. Accuracy of skin temperature measurement and core body temperature assessment is calculated, taking into account both the measurement instrument and measured subject, the human. Results of measurement uncertainty analysis, gathered to the extent of available data, are added to common measurement uncertainty of the core body temperature measurement and assessment process. Theoretical combined uncertainty of the measurement is considerably higher than uncertainties claimed by manufacturers and required by medical specialists at ±0,3 °C and can be as high as ±2 °C. termovizija merilna negotovost emisivnost kože presejalni test za telesno temperaturo thermal imaging measurement uncertainty skin emissivity human temperature screening true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2020-09-03 11:25:00 2020-09-03 11:25:06 2022-08-31 03:51:34 0000-00-00 00:00:00 2020 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 51481 Mlacnik_Vid_-_Tocnost_in_merilna_negotovost_pri_brezkontaktnem_merjenju_telesne_temperature_s_te.pdf Mlacnik_Vid_-_Tocnost_in_merilna_negotovost_pri_brezkontaktnem_merjenju_telesne_temperature_s_te.pdf 1 A39CB1FAB6076DFEA172F37917EB3118 3fdebe528a35a84d3c8aa3b7733507d861387afd1aba57e8c42589a8c98e203f bf06835c-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=133813 Fakulteta za elektrotehniko 0 0 0