Naprava za monitoring kavnih aparatov

KVAS, BLAŽ (author), Jankovec, Marko (mentor)

Ta magistrska naloga opisuje IoT napravo, ki nadzoruje kavni aparat v restavraciji ali podobni gostinski ustanovi. Načrtovana je tako, da se neinvazivno namesti v kavni aparat in s tem ne krši garancijskih pogojev. Nadzor je izveden z merjenjem magnetnega polja okrog magnetnih ventilov, da ugotovimo kdaj je kavni aparat aktiven, podatke pa nato preko GSM modula pošiljamo na strežnik, kjer se obdelajo in predstavijo uporabniku ali naročniku. Možnost imamo dodati tudi senzor temperature, da lahko preverimo, če je voda primerno segreta in senzor nedovoljenega posega, da uporabnik ne more brez dovoljenja odstraniti naprave. V primeru, da uporabnik izklopi napajanje napravo, se vklopi pomožno napajanje, kar omogoča neprekinjeno delovanje naprave. V tem času GSM modul ne deluje, vendar naprava še vseeno spremlja dogajanje in podatke shranjuje na bliskovni pomnilnik.

• Language: Slovenian
• Keywords: GSM modul, kavni aparat, pomožno napajanje
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2022
• PID: 20.500.12556/RUL-134602
• COBISS.SI-ID: 94469891
• Publication date in RUL: 20.01.2022

Secondary language

• Language: English
• Title: Coffee machine monitoring device

Abstract

This masters describes an IoT device that monitors a coffee machine at a restaurant or similar catering business. It is designed to be installed inside the coffee machine noninvasively to not void the warranty. Monitoring is done by sensing the magnetic field of the solenoid valves to sense when it is active. The data is then sent to the server via GSM module to process them further and display them to the user. It also features an optional temperature sensor to see if the water was properly heated and a tamper sensor to ensure that the user can not interfere with the operation of the device. In case the user disconnects the device from the power a backup made from supercapacitors kicks in and allows the device to stay powered. During this time the GSM module does not function and the device only gathers data and saves it to flash memory.

• Keywords: GSM module, coffee machine, backup power supply