20.500.12556/RUL-183805 Razvoj nizkocenovnega sistema za spremljanje obratovalnega stanja pralnega stroja Development of a Low-Cost System for Monitoring the Operating Condition of a Washing Machine V nalogi je predstavljen razvoj nizkocenovnega merilnega sistema za spremljanje obratovalnega stanja pralnega stroja. Sistem temelji na uporabi različnih tipov senzorjev (npr. pospeškomerov, temperaturnih in senzorjev električnih veličin) ter mikrokrmilnikov ESP32, ki omogočajo neodvisno delovanje posameznih enot, hkratno zajemanje več kot 100 kanalov signalov in prenos podatkov prek MQTT protokola. Rezultati testiranja so pokazali, da je mogoče zanesljivo zaznati značilne faze delovanja, kot so polnjenje, segrevanje in centrifugiranje. Razvita rešitev se odlikuje po nizki ceni, ki znaša red deset evrov na posamezen merilni modul (senzor, mikrokrmilnik ESP32 in pripadajoča elektronika), kar je bistveno manj od primerljivih industrijskih sistemov, katerih cena praviloma dosega red deset tisoč evrov, ob tem pa omogoča učinkovito spremljanje sprememb v obratovanju. Sistem predstavlja osnovo za nadaljnji razvoj rešitev napovednega vzdrževanja ter je zaradi modularne zasnove prenosljiv tudi na druge naprave. This thesis presents the development of a low-cost measurement system for monitoring the operational state of a washing machine. The system is based on the use of various types of sensors (e.g., accelerometers, temperature sensors, and electrical quantity sensors) and ESP32 microcontrollers, which enable independent operation of individual measurement units, simultaneous acquisition of more than 100 signal channels, and data transmission via the MQTT protocol. The results of experimental testing demonstrate that the system can reliably detect characteristic operating phases, such as water filling, heating, and spinning. The developed solution is distinguished by its low cost, on the order of tens of euros per individual measurement module (sensor, ESP32 microcontroller, and associated electronics), which is significantly lower than comparable industrial systems, typically costing tens of thousands of euros, while still enabling effective monitoring of operational changes. The system provides a foundation for further development of predictive maintenance solutions and, due to its modular design, can be applied to other devices. napovedno vzdrževanje spremljanje obratovalnega stanja nizkocenovni senzorji MQTT internet stvari analiza podatkov mikrokrmilniki predictive maintenance condition monitoring low-cost sensors MQTT Internet of Things data analysis microcontrollers true false false [N. Pregrad] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-06-19 08:31:02 2026-06-19 08:31:09 2026-06-24 09:57:57 0000-00-00 00:00:00 2026 0 Ljubljana 0 XII, 32 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 681.586:004.3:648.23(043.2) 285728 282667267 47105.pdf 47105.pdf 1 73E45470ED4032358C83CFA274B449AA f89859d3ef62e446e0bf6907cca7b42ffdd43884f0846283acbd9455df87a4bd 66193232-6ba8-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=235994 Fakulteta za strojništvo 0 0 0