20.500.12556/DKUM-20860 Elektronski temperaturno kompenziran sistem za merjenje vsebnosti alkohola v destilatu vina na osnovi gostote Temperature compensated electronic system for measuring alcohol content in wine distillate based on density Metodo merjenja alkohola v destilatu vina z alkoholmetrom smo nadgradili z elektronskim sistemom. Ta vsebuje senzor razdalje, ki meri odmik vrha alkoholometra do gladine merjenega vzorca, in temperaturni senzor, ki meri temperaturo vzorca. Naloga elektronskega sistema z mikrokrmilnikom je, da pretvori izmerjeni signal in izvede temperaturno korekcijo izmerjenega volumenskega deleža alkohola, na LED prikazovalniku pa poda dejanski delež alkohola merjenega vzorca. Natančnost sistema smo preizkusili na vzorcih z 8, 10, 12, 14, 16 in 18 % alkohola ter pri temperaturah 15, 20 in 25 °C, kjer smo izmerjene meritve primerjali z dejanskimi alkoholnimi vrednostmi. Na osnovi pridobljenih podatkov smo določili odstopanja in korekcijsko tabelo temperaturne kompenzacije. Ugotovili smo, da napaka elektronskega merilnega sistema pri izmerjeni količini alkohola lahko dosega napako 3,8 %, v najslabšem primeru, in 0,1 %, v najboljšem primeru. The method of measuring alcohol strength of wine distillate with alcoholmeter has been upgraded with a use of an electronic system. It includes a proximity sensor that measures distance from the peak of alcoholmeter to the level of measured fluid sample and a temperature sensor that measures its temperature. The purpose of an electronic circuit build around a microcontroller is to convert the distance measure and perform a temperature correction. The final result, an actual alcoholic strength, is then shown on an LED display. The accuracy of the system was tested on samples with 8, 10, 12, 14, 16 and 18 % alcohol and at temperatures 15, 20 and 25 °C. In all cases measurements were compared to actual alcohol values. Based on the collected data we were able to measure the deviations from the actual alcoholic straight and perform temperature compensation. It has been concluded that the error of an electronic measuring system reaches up to 3,8 % in worst case and 0,1 % at best. merjenje alkohola gostota alkoholmeter senzorji mikrokrmilnik alcohol measurement density alcoholmeter sensors microcontroller true true false Slovenski jezik Angleški jezik Diplomsko delo 2011-10-05 10:04:42 2011-10-12 13:57:20 2022-04-14 08:19:51 2023-12-27 03:28:36 2011 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:X47KVOAK VS_Prijatelj_Kristjan_2011.pdf VS_Prijatelj_Kristjan_2011.pdf 1 D3DF2CAF175B8504BB07F6C92963EB13 ba14743e8649ad44e1e92d34d9d74a2e69be80a538fc197f78f572f96e046626 b8cfb0e7-7c05-11eb-bb7a-00155d0001ca 20.500.12556/dkum/34349585-299f-44f8-a5d4-384130619220 https://dk.um.si/Dokument.php?lang=slv&id=26159 Fakulteta za kmetijstvo in biosistemske vede 0 0 0