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1.
Pregled delovanja in nadgradnja brusilnega stroja večjih dimenzij
Žan Arnšek, 2025, master's thesis

Abstract: V tem magistrskem delu je predstavljen proces predelave zastarelega brusilnega stroja, zasnova programa za upravljanje tega stroja in zasnova varnostnih elementov za zaščito delovnega okolja. Predstavljeno bo osnovno delovanje samega stroja in programa za nadzor, omenili pa bomo še probleme, s katerimi smo se srečali pri predelavi, in možne nadgradnje, ki bi lahko izboljšale delovanje stroja. Opisali bomo tudi celoten varnostni sistem, njegovo delovanje ter način, kako z njim minimiziramo možnost nezgod pri obratovanju stroja.
Keywords: Brusilni stroj, nadgradnja, varnost, avtomatizacija
Published in DKUM: 03.06.2025; Views: 0; Downloads: 4
.pdf Full text (5,20 MB)

2.
Real-life application of a wearable device towards injury prevention in tennis : a single-case study
Iztok Kramberger, Aleš Filipčič, Aleš Germič, Marko Kos, 2022, original scientific article

Abstract: The purpose of this article is to present the use of a previously validated wearable sensor device, Armbeep, in a real-life application, to enhance a tennis player’s training by monitoring and analysis of the time, physiological, movement, and tennis-specific workload and recovery indicators, based on fused sensor data acquired by the wearable sensor—a miniature wearable sensor device, designed to be worn on a wrist, that can detect and record movement and biometric information, where the basic signal processing is performed directly on the device, while the more complex signal analysis is performed in the cloud. The inertial measurements and pulse-rate detection of the wearable device were validated previously, showing acceptability for monitoring workload and recovery during tennis practice and matches. This study is one of the first attempts to monitor the daily workload and recovery of tennis players under real conditions. Based on these data, we can instruct the coach and the player to adjust the daily workload. This optimizes the level of an athlete’s training load, increases the effectiveness of training, enables an individual approach, and reduces the possibility of overuse or injuries. This study is a practical example of the use of modern technology in the return of injured athletes to normal training and competition. This information will help tennis coaches and players to objectify their workloads during training and competitions, as this is usually only an intuitive assessment.
Keywords: tennis, training, data-based coaching, shot recognition, wearable device, workload, recovery
Published in DKUM: 31.03.2025; Views: 0; Downloads: 3
.pdf Full text (4,62 MB)
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3.
Razvoj uporabniškega vmesnika za vizualizacijo kinematike satelita : magistrsko delo
Tilen Teršek, 2025, master's thesis

Abstract: Trenutna orodja za vizualizacijo kinematike satelitov nimajo intuitivnega uporabniškega vmesnika, ki bi omogočal realnočasovni prikaz njihovega obnašanja. Poleg tega so uporabniki pogosto omejeni na statične podatkovne zbirke ali posplošene tirnice, brez možnosti vizualizacije ključnih vektorjev, kot so magnetno polje, položaj Sonca in orientacija glede na Zemljo. V magistrskem delu bomo raziskali različne razvojne tehnike za ustvarjanje namiznih aplikacij, pri čemer se bomo osredotočili na gradnjo večplatformnega orodja, namenjenega reševanju zgoraj omenjenih izzivov. Razvita aplikacija bo ponujala interaktiven in uporabniku prijazen vmesnik za vizualizacijo tirnice satelita, sledenje telemetriji ter spremljanje vektorjev, kot so magnetno polje in položaj Sonca. Poleg tega bodo uporabniki imeli možnost analize ključnih metrik, kot so hitrost, orientacija in drugi telemetrijski podatki, kar bo omogočilo celovit pregled nad delovanjem satelita.
Keywords: Trisat, Satelit, Vizualizacija, Kinematika, Electron, Angular
Published in DKUM: 27.03.2025; Views: 0; Downloads: 30
.pdf Full text (4,45 MB)

4.
Sistem za avtomatizirano testiranje prototipnih tiskanih vezij
Mihael Pajžlar, 2025, master's thesis

Abstract: V magistrskem delu je obravnavano načrtovanje in implementacija sistema za avtomatsko testiranje tiskanih vezij na prototipih pred serijsko proizvodnjo. V nalogi so predstavljene ključne tehnologije in standardi, ki so pomembni za razvoj sistema. Strežniški del sistema je bil razvit s programskim jezikom Python in uporabo ogrodja FastAPI in Uvicorn. Odjemalni del sistema je prav tako razvit s programskim jezikom Python, vendar z uporabo okolja JupyterLab. Podatki in poročila se shranjujejo v oddaljeno podatkovno bazo MySQL. Sistem omogoča hitrejše izvajanje enakih testov v enakih pogojih, saj poročilo in priložena datoteka vsebujeta vse potrebne informacije za ponovno izvedbo testiranja. Cilj razvoja sistema je razbremenitev testerja pisanja poročila in s tem pospešitev izvajanja testov, pri čemer pa ne trpi kvaliteta izvajanja testa.
Keywords: programsko inženirstvo, RESTful spletne storitve, avtomatizacija, testiranje, poročilo
Published in DKUM: 04.03.2025; Views: 0; Downloads: 28
.pdf Full text (4,67 MB)

5.
Triosni visoko občutljiv magnetometer s standardnim komunikacijskim vmesnikom
Tomi Tominc, 2024, master's thesis

Abstract: V magistrskem delu je opisan vgrajen sistem za vektorsko merjenje magnetnega polja, ki temelji na magnetno-induktivni metodi s tremi ortogonalno orientiranimi tuljavami. Sistem je zasnovan na programirljivem logičnem vezju, ki podatke pošilja preko standardnega komunikacijskega vmesnika. Opisani so primerjava trenutno prisotnih tehnologij, zasnova in delovanje celotnega sistema ter predstavljene meritve magnetnih in električnih lastnosti ter radiacijskih vplivov.
Keywords: magnetometer, magnetno polje, induktivna metoda, programirljiva logična vezja
Published in DKUM: 06.02.2025; Views: 0; Downloads: 0

6.
Mixed-field radiation of 3-D MLC flash memories for space applications
Lorenzo Gonzales, Salvatore Danzeca, Salvatore Fiore, Iztok Kramberger, 2024, original scientific article

Abstract: This article presents the results of dynamic measurements of 3-D multilevel cell (MLC) NAND flash memories in a mixed-field radiation facility CERN High-energy AcceleRator Mixed field/facility (CHARM), CERN. The results show that the behavior of devices is comparable to tests with specific high energy particles, such as high energy protons, heavy ions, and to TID tests. The observed TID and single-event effects (SEEs) in flash memories from the existing relevant work are also observed in mixed field, making the environment suitable for an accelerated system level test. As the CHARM hadron energy spectrum is comparable to the low Earth orbit (LEO) environment, the facility is appropriate as an accelerated test for space applications. Furthermore, the volumetric characteristics of the devices can be observed in this 3-D radiation facility. Additionally, bad bit (BB) spread was observed, and the necessary radiation induced errors in NAND devices are discussed.
Keywords: bit error rate, flkash memories, memory controller, mixed field facility, multilevel cell, MLC, radiation hardness, single-event upsets, SEUs, space applications, total ionizing dose
Published in DKUM: 03.02.2025; Views: 0; Downloads: 6
.pdf Full text (9,44 MB)

7.
Razvoj simulatorja kinematike satelita za zemeljske tirnice
Jernej Volk, 2024, master's thesis

Abstract: V magistrskem delu opišemo postopek izdelave simulatorja kinematike satelita za zemeljske tirnice. Najprej predstavimo teoretično ozadje simulatorja, kamor spada opis vektorja stanja satelita in njegovega spreminjanja skozi čas. V naslednjem poglavju opišemo cilje in arhitekturo programske opreme ter njeno uporabo. V predzadnjem poglavju predstavimo končen produkt tega dela. Prikažemo in obrazložimo grafe, ki prikazujejo potek simulacije. V zaključku povzamemo glavne ugotovitve in predstavimo možnosti za nadalnje delo.
Keywords: simulacija, satelit, vesolje, senzor, aktuator
Published in DKUM: 22.10.2024; Views: 0; Downloads: 36
.pdf Full text (1,74 MB)

8.
Potentiometric surfactant sensor with a pt-doped acid-activated multi-walled carbon nanotube-based ionophore nanocomposite
Nada Glumac, Milan Momčilović, Iztok Kramberger, Darko Štraus, Nikola Sakač, Elvira Kovač-Andrić, Bojan Đurin, Marija Kraševac Sakač, Kristina Đambić, Marija Jozanović, 2024, original scientific article

Abstract: Two new surfactant sensors were developed by synthesizing Pt-doped acid-activated multiwalled carbon nanotubes (Pt@MWCNTs). Two different ionophores using Pt@MWCNTs, a new plasticizer, and (a) cationic surfactant 1,3-dihexadecyl-1H-benzo[d]imidazol-3-ium-DHBI (Pt@MWCNT-DHBI ionophore) and (b) anionic surfactant dodecylbenzenesulfonate-DBS (Pt@MWCNT-DBS ionophore) composites were successfully synthesized and characterized. Both surfactant sensors showed a response to anionic surfactants (dodecylsulfate (SDS) and DBS) and cationic surfactants (cetylpyridinium chloride (CPC) and hexadecyltrimethylammonium bromide (CTAB)). The Pt@MWCNT-DBS sensor showed lower sensitivity than expected with the sub-Nernstian response of ≈23 mV/decade of activity for CPC and CTAB and ≈33 mV/decade of activity for SDS and DBS. The Pt@MWCNTDHBI surfactant sensor had superior response properties, including a Nernstian response to SDS (59.1 mV/decade) and a near-Nernstian response to DBS (57.5 mV/decade), with linear response regions for both anionic surfactants down to ≈2 × 10−6 M. The Pt@MWCNT-DHBI was also useful in critical micellar concentration (CMC) detection. Common anions showed very low interferences with the sensor. The sensor was successfully employed for the potentiometric titration of a technical grade cationic surfactant with good recoveries. The content of cationic surfactants was measured in six samples of complex commercial detergents. The Pt@MWCNT-DHBI surfactant sensor showed good agreement with the ISE surfactant sensor and classical two-phase titration and could be used as an analytical tool in quality control
Keywords: potentiometric surfactant sensor, metal-doped MWCNT, surfactants, carbon nanocomposite, sensors
Published in DKUM: 23.08.2024; Views: 110; Downloads: 11
.pdf Full text (16,29 MB)

9.
Namestitveni mehanizem magnetometra za nanosatelite : magistrsko delo
Matic Markovič, 2024, master's thesis

Abstract: Nanosateliti zaradi kompaktnih dimenzij, nizke mase in stroškovne učinkovitosti postajajo vse bolj dostopni širšemu krogu organizacij in raziskovalcev. Z natančnim merjenjem zemeljskega magnetnega polja prispevajo k raziskovanju geomagnetnih pojavov in nadzoru položaja. Izziv predstavlja vpliv elektromagnetnega polja nanosatelita na odčitek magnetometra. Magistrsko delo opisuje načrtovanje in izdelavo prototipa namestitvenega mehanizma magnetometra v obliki podsistema, skladnega s standardom PC104. Podsistem je mogoče integrirati v strukturo nanosatelitov in omogoča namestitev magnetometra na razdaljo, večjo od 1 m od strukture satelita. Tako zmanjšamo vpliv elektromagnetnega polja satelita na zanemarljivo raven. V delu so predstavljeni rezultati več meritev za ovrednotenje delovanja izdelanega podsistema.
Keywords: namestitveni mehanizem, magnetometer, nanosatelit, standard PC104, globoidno polžasto gonilo
Published in DKUM: 25.01.2024; Views: 332; Downloads: 0
.pdf Full text (6,86 MB)

10.
Razvoj napetostno krmiljenih oscilatorjev z nizkim faznim šumom : magistrsko delo
Rok Falnoga, 2023, master's thesis

Abstract: V magistrskem delu sta predstavljena delovanje in razvoj napetostno krmiljenih oscilatorjev na osnovnih frekvencah delovanja 50MHz, 100MHz in 1GHz. Kot resonator za 1GHz VCO je uporabljen SAW resonator, za 50MHz in 100MHz pa kremenčev resonator, ki resonira na osnovni frekvenci pri 50MHz VCO-ju in na tretjem overtonu pri 100MHz VCO. Uporabili smo računsko, simulacijsko in eksperimentalno metodo razvoja. Razviti VCO-ji so se izkazali kot elektronske komponente, ki jih lahko uporabimo v različnih aplikacijah ali pa za nadaljnji razvoj.
Keywords: napetostno krmiljeni oscilator, kremenčev resonator, SAW resonator, fazni šum
Published in DKUM: 13.10.2023; Views: 243; Downloads: 37
.pdf Full text (2,77 MB)

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