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Optično spremljanje stepanja smetane
ID Peroša, Rok (Author), ID Lebar, Andrej (Mentor) More about this mentor... This link opens in a new window, ID Valentinčič, Joško (Comentor)

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Abstract
Avtomatizacija se vse bolj uveljavlja na mnogih področjih in vse bolj tudi v preprostejših izdelkih, ki jih uporabljamo v vsakdanjem življenju in mali gospodinjski aparati niso nobena izjema. V delu je predstavljena metodologija za optično spremljanja procesa stepanja smetane. Specifično se delo ukvarja z določanjem kvantitativnih atributov, na podlagi katerih bi lahko določili stopnjo stepenosti. Magistrsko delo obravnava pripravo in testiranje okolja za optično spremljanje stepanja sladke smetane, najprej podrobneje na makroskali in potem še primerjalno na mikroskali. Predstavljeni so rezultati stepanj različnih mas smetane od 100 g do 600 g, tako za navadno kakor za trajno smetano in zajetih mikrostruktur navadne in trajne smetane mase 250 g pri različnih časih. Ugotovljeno je bilo, da je mogoče na osnovi histogramov orientacij gradienta sivin določiti različne vnaprej določene faze stepanja označene z '-', '0' in '++'. S spremljanjem povprečne vrednosti sivin pa je mogoče določiti stopnjo stepenosti '+', ki je med stopnjama '0' in '++'. Z minimalno vrednostjo četrtega statističnega momenta entropije slike je mogoče določiti stopnjo stepenosti '-'. Na mikro strukturni skali je bilo kvalitativno ugotovljeno, da obstoji korelacija med porazdelitvijo velikosti zračnih mehurčkov v mediju, njihovo obliko ter stopnjo stepenosti.

Language:Slovenian
Keywords:stepanje smetane, optično spremljanje, kvantitativni atributi, stopnja stepenosti, mikrostruktura smetane
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Place of publishing:Ljubljana
Publisher:[R. Peroša]
Year:2018
Number of pages:XXVI, 114 str.
PID:20.500.12556/RUL-101707 This link opens in a new window
UDC:681.5:007.52(043.2)
COBISS.SI-ID:16139547 This link opens in a new window
Publication date in RUL:29.06.2018
Views:1173
Downloads:174
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Secondary language

Language:English
Title:Optical monitoring whipping cream
Abstract:
Automatization is more and more common in various fields. Its presence has also increased in not so elaborate products we use in our day-to-day life, which include also small home appliances. In the dissertation, I presented the methodology of the process of whipping cream. More specifically, the paper tackles the determination of quantitative attributes, based on which the degree of whipping could be defined. The master thesis deals with the preparation and testing of the environment for the optical monitoring of the whipped cream - firstly, in detail on the macro scale and then comparatively on the micro scale. I presented results of whipping different masses of cream, ranging from 100 g to 600 g, both for fresh and for UHT long-life cream. The results also show gathered microstructures of fresh and UHT long-life cream weighing 250 g at different times. It has been established that different predefined stages of whipping, marked with '-', '0' and '++', can be defined on the basis of orientation histograms of the gray scale gradient. What is more, by monitoring the average of gray scale values, it is possible to determine the degree of whipping marked '+', which ranges between the levels '0' and '++'. With the minimum value of the fourth statistical moment of the image entropy, the degree of whipping '-' can be determined. On the micro structural scale, it was qualitatively established that there was a correlation between the distribution of the air bubble size in the medium, their shape and degree of whipping.

Keywords:whipping cream, optical monitoring, quantitative attribute, whipped step, microstructure of cream

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