Razvoj zanesljivega merilnika količine tekočega goriva za uporabo v letalstvu

Trošt, Jure (avtor), Jankovec, Marko (mentor)

V pričujočem delu spremljamo razvoj merilnega sistema za merjenje količine goriva v letalu. Glavni smoter te magistrske naloge je razviti zanesljiv merilni sistem, ki poleg natančnega zaznavanja količine goriva ponuja še dodatno raven zaščite pred neželenimi kontaminanti v gorivu. V uvodnem delu je predstavljena problematika, ki je pozvala k iskanju rešitve problema. Nadalje so preučeni možni načini merjenja količine goriva. Opisan je princip delovanja posamezne metode, prav tako so opredeljene prednosti in slabosti posameznega pristopa za merjenje količine goriva v ultralahkem letalu. Uporabljena je bila kapacitivna metoda zaznavanja nivoja goriva. V tretjem poglavju so na kratko predstavljeni predvideni sestavni deli merilnega sistema z namenom, da se bralec seznani z vlogo sledečih poglavij. Nadalje je predstavljeno teoretično ozadje uporabljene komunikacije CAN. Najprej je na kratko predstavljen zgodovinski vidik, sledi sestava paketov ter osnova delovanja komunikacije na fizikalnem nivoju. Nato sledi krajša teoretična obravnava stikalnih pretvornikov s poudarkom na stikalnem pretvorniku navzdol. Na kratko se dotaknemo še neidealnosti osnovnih sestavnih gradnikov elektronskih vezij. Osrednji del obsega zasnovo in realizacijo merilnega sistema. Obravnava se posamezne sklope naprave ter realizacijo le teh na tiskanem vezju. Temu sledi še testiranje sistema in vrednotenje rezultatov.

• Jezik: Slovenski jezik
• Ključne besede: merjenje količine goriva, letalstvo, komunikacija CAN, stikalni pretvorniki, merilni sistem, mikrokrmilnik, tiskano vezje
• Vrsta gradiva: Magistrsko delo/naloga
• Organizacija: FE - Fakulteta za elektrotehniko
• Leto izida: 2016
• PID: 20.500.12556/RUL-83418
• Datum objave v RUL: 10.06.2016

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: A development of a reliable fuel gauging system for aeroplane applications

Izvleček

This master's thesis presents the development of the measuring system for measuring the amount of fuel in an aeroplane. Thesis' main aim is to develop a reliable measuring system, which would – apart from a precise detection of the amount of fuel – offer an additional level of protection against unwanted contaminants in the fuel. The introductory part presents the problematic that initiated the search for the solution of the problem in question. Further, the possible ways of measuring the amount of fuel are examined. The principle of operation of a certain method is described, as well as the advantages and weaknesses of individual approaches for measuring the level of fuel in an ultra light aeroplane. The capacitive method of fuel level detection was used. The third chapter briefly presents the prospective component parts of the measuring system. The purpose is to introduce the role of the upcoming chapters to the reader. Later-on we present the theoretical background of the CAN bus used in the thesis. Firstly, the historical aspect is presented. The composition of the packets and the basis of the functioning of the communication on the physical level subsequently follow. A short discussion of switch mode power supplies follows with the emphasis on the step-down converter. We briefly discuss the unsuitability of the basic building blocks of electronic circuits. The main part of the thesis encompasses the design and realisation of the measuring system. The individual compounds of the machine and their realisation on the printed circuit board are discussed. System testing and results evaluation follow.

• Ključne besede: fuel level measuring, aviation, CAN bus, switch mode power supply, measuring system, microcontroller, printed circuit board