Krmiljenje ogrevanja z vgrajenim sistemom

HRIBAR, ANŽE (author), Rozman, Robert (mentor)

V diplomski nalogi se načrtuje in implementira prototip naprave, ki rešuje problem poganjanja obtočnih črpalk v starejših ogrevalnih sistemih, kateri so brez krmilne elektronike. Elektronsko krmiljenje se potrebuje tam, kjer mora več različnih sklopov – toplotna črpalka in centralna peč – tvoriti usklajeno celoto. Realizira se enostavna in poceni rešitev, ki bo modularna in jo je kasneje mogoče nadgraditi. S pomočjo končnega avtomata stanj se razvije uporabniški vmesnik, ki omogoča, da uporabnik poleg spremljanja vseh parametrov lahko tudi spreminja nastavitve naprave. Ker je potrebno, da se nastavitve ob morebitnem izklopu napajanja obdržijo, so razvite funkcije za branje in pisanje podatkov v bliskovni pomnilnik. Naredi se tiskano vezje, ki je zasnovano modularno, da se kasneje lahko doda temperaturna tipala ali rele kartica, za krmiljenje dodatnih elementov. Predvidi in opiše se tudi ravnanje v primeru napak – varni način delovanja. S pomočjo programske opreme CAD/CAM se načrtuje ohišje, ki se ga izdela s pomočjo rezkalnika CNC. Končni prototip se vgradi v ogrevalni sistem, kjer se tudi testira in preizkusi delovanje.

• Language: Slovenian
• Keywords: ogrevalni sistem, STM32F4 Discovery, uporabniški vmesnik, končni avtomat stanj
• Work type: Bachelor thesis/paper
• Organization: FRI - Faculty of Computer and Information Science
• Year: 2017
• PID: 20.500.12556/RUL-91150
• Publication date in RUL: 22.03.2017

Secondary language

• Language: English
• Title: Embedded System for Heating Control

Abstract

The present thesis proposes a design and implementation of a functional embedded system prototype, which solves a problem of multiple circulator pumps in old heating systems without any kind of control electronics. Control electronics is needed where multiple units of a heating system - namely the heat pump and the central heating unit - must function as one unit. The thesis develops an easy, affordable and modular solution with a possibility of upgrading. User interface is implemented using a finite-state machine, which enables user to change settings. Since user settings must retain their value in case of power shortage, functions of reading from flash memory and writing to flash memory have been developed. Printed circuit board (PCB) is modular, so that new sensors and actuators can be added in the future. In case of errors, a special error-handling mode is initiated - a so-called safe mode. A front plastic housing mask is designed with the help of CAD/CAM software, to be milled with CNC. Finally, the prototype is installed and tested on a heating system.

• Keywords: heating system, STM32F4 Discovery, user interface, finite-state machine