20.500.12556/DKUM-17179 MERILNIK NIVOJEV TEKOČIN NA OSNOVI SPEKTRALNE ANALIZE AKUSTIČNEGA VALOVANJA FLUID LEVEL GAUGE BASED ON SPECTRAL ANALYSIS OF ACOUSTIC WAVES V diplomski nalogi je predstavljena izvedba akustičnega merilnika tekočin na osnovi spektralne analize akustičnega valovanja, ki se ustvari v resonatorju. Merilnik temelji na vzbujanju resonančne cevi s šumnim signalom ter FFT analizi valovanja, ki se ustvari v resonančni cevi ob takšnem vzbujanju. Opisan je teoretični princip delovanja, zasnova in razdelitev vezja ter blokovna struktura celotnega programa. Kot osnova teoretske analize so obravnavani pojmi valovanje v zaprti piščali, harmoniki, frekvenčni spekter, FFT analiza. Prikazani so tudi rezultati meritev pri petih različnih temperaturah in karakteristike resonatorja. The diploma thesis presents realization acoustic fluid level gauge based on spectral analysis of acoustic waves, that is created in resonator. The level gauge is based on excitation of resonant pipe with noise signal and analysis of acoustic waves FFT, that is created in resonant pipe on such excitation. Theoretical principle of activity, design, distribution of circuit and block structure of entire program is described. On the base of the theoretical analyze notions such are waves within a closed whistle , accordions, frequency spectrum, FFT analysis were discussed. The results of measurements at five different temperatures and features of resonator were also showed. senzorji FFT akustično valovanje merilnik nivojev resonanca šumni generator … sensors FFT acoustic waves level gauge resonance noise generator … true true false [I. Vehovar] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2011-01-03 09:39:08 2011-01-14 08:46:10 2022-04-13 09:16:34 2023-12-22 03:16:02 2010 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 681.586:681.586(043.2) 14913558 URN:SI:UM:DK:R0E3FEJF UNI_Vehovar_Izidor_2011.pdf UNI_Vehovar_Izidor_2011.pdf 1 8A77EC8D1A21F86719C257A1BBFF04ED a95cd6e88ad63c01ceb032ce415636e7f2dd80a7530511d285b71c60c895af31 d41ed3d7-7c04-11eb-bb7a-00155d0001ca 20.500.12556/dkum/67136198-8b2a-451a-897f-ee0910838c32 https://dk.um.si/Dokument.php?lang=slv&id=19887 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0