Uporabniku prijazen programirljiv logični krmilnik

RUS, LUKA (author), Rozman, Robert (mentor), Trebar, Mira (co-mentor)

Cilj diplomske naloge je načrtovanje in izdelava cenovno ugodnega programirljivega logičnega krmilnika (PLK), ki omogoča enostavno delo in programiranje uporabnikom, ki nimajo veliko izkušenj na tem področju. Zasnovan je na platformi ESP32 in je dovolj splošen, da ga lahko uporabimo za veliko različnih namenov. Posamezne komponente in naprave lahko za krmiljenje priključimo na enega izmed 16 relejnih izhodov, tipala pa na enega izmed 8 vhodov. Ob morebitni izgubi napajanja, se podatki ohranijo na bliskovnemu pomnilniku v mikrokrmilniku ESP32. Na uporabniku prijazen način lahko krmilnik programiramo tako, da nastavimo stanja, pogoje za prehode med njimi in ustrezne funkcije programirljivih gumbov na ohišju. Krmilnik podpira tudi več načinov delovanja oziroma krmilnih algoritmov, med katerimi lahko izberemo tistega, ki je trenutno aktiven. Tako lahko krmilnik vnaprej sprogramiramo za različne situacije. Vse nastavitve krmilnika lahko spreminjamo preko uporabniškega vmesnika na zaslonu ali preko lokalne spletne strani v krmilniku. Delovanje krmilnika smo najprej preizkusili z vidika uporabniške izkušnje in potem še v situaciji krmiljenja čistilne naprave za ribnik. Iz obeh preizkusov smo ugotovili, da krmilnik deluje v skladu z zadanimi zahtevami in cilji ter lahko enakovredno nadomesti obstoječi sistem.

• Language: Slovenian
• Keywords: krmilnik PLK, ESP32, spletna stran
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FRI - Faculty of Computer and Information Science
• Year: 2023
• PID: 20.500.12556/RUL-144995
• COBISS.SI-ID: 148172547
• Publication date in RUL: 29.03.2023

Secondary language

• Language: English
• Title: User-friendly programmable logic controller

Abstract

The goal of the thesis is to design and build a low-cost PLC (Programmable Logic Controller) controller that is easy to work with and easy to program for users who do not have much experience in this field. It is designed on the ESP32 platform and is general enough to be used for many different purposes. Individual components and devices can be connected to one of the 16 relay outputs for control and sensors to one of the 8 inputs. In the event of a power loss, the data is retained in flash memory in the ESP32 microcontroller. The controller can be programmed in a user-friendly way by setting the states, the conditions for transitions between them, and the corresponding functions of the programmable buttons located on the housing. The controller also supports several modes of operation or control algorithms, from which only one can be selected and active. In this way, the PLC can be pre-programmed for different situations. All controller settings can be changed via the on-screen user interface or via a local web page hosted on the controller. We first tested the controller’s performance in terms of user experience and then in the situation of controlling a pond treatment plant. From both tests, we found that the controller works according to the requirements and objectives and can equivalently replace the existing system.

• Keywords: PLC controller, ESP32, web page