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master's thesis
Sustav za kontinuirano praćenje disanja kapacitivnom metodom
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2015. urn:nbn:hr:168:047262
Martinović, Toni
University of Zagreb
Faculty of Electrical Engineering and Computing

Cite this document

Martinović, T. (2015). Sustav za kontinuirano praćenje disanja kapacitivnom metodom (Master's thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:047262

Martinović, Toni. "Sustav za kontinuirano praćenje disanja kapacitivnom metodom." Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2015. https://urn.nsk.hr/urn:nbn:hr:168:047262

Martinović, Toni. "Sustav za kontinuirano praćenje disanja kapacitivnom metodom." Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2015. https://urn.nsk.hr/urn:nbn:hr:168:047262

Martinović, T. (2015). 'Sustav za kontinuirano praćenje disanja kapacitivnom metodom', Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 19 April 2024, https://urn.nsk.hr/urn:nbn:hr:168:047262

Martinović T. Sustav za kontinuirano praćenje disanja kapacitivnom metodom [Master's thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2015 [cited 2024 April 19] Available at: https://urn.nsk.hr/urn:nbn:hr:168:047262

T. Martinović, "Sustav za kontinuirano praćenje disanja kapacitivnom metodom", Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:168:047262

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Metadata
TitleSustav za kontinuirano praćenje disanja kapacitivnom metodom
Title (english)Capacitive-based system for continuous respiration monitoring
AuthorToni Martinović
MentorHrvoje Džapo (mentor)
Committee memberHrvoje Džapo (predsjednik povjerenstva)
Committee memberMario Cifrek (član povjerenstva)
Committee memberDarko Vasić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
Zagreb
Defense date and country2015-07-08, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Computing
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Abstract
U ovom diplomskom radu prikazan je pregled metoda za praćenje disanja ispitanika. Pomoću elektrostatskih simulacija proučen je utjecaj geometrije elektroda kapacitivnog senzora na njegovu karakteristiku te je predložen oblik koji daje zadovoljavajuću osjetljivost i linearnost, uz istodobno postizanje malih dimenzija i jednostavnosti izrade. Karakteristika dobivena simulacijom uspoređena je s karakteristikom izmjerenom na izrađenom prototipu senzora. Opisane su komponente elektroničkog sustava koji omogućuje kontinuirano mjerenje kapaciteta senzora. Za mjerenje kapaciteta koristi se integrirani sklop AD7746 koji se odlikuje visokom razlučivošću mjerenja. Sustav se temelji na mikrokontroleru izrazito niske potrošnje MSP430FR5969, a za pohranjivanje podataka koristi se mikro SD kartica. Korisničko sučelje koje omogućuje konfiguraciju sustava i preuzimanje snimljenih podataka predstavlja Android aplikacija koja se izvodi na pametnom telefonu, a sa sustavom se povezuje putem Bluetooth LE modula RN4020. Posebna pažnja posvećena je niskoj potrošnji i kompaktnosti sustava pa su sve komponente, uključujući naponski regulator s prekidanjem struje i sklop za punjenje litijskih akumulatora, smještene na tiskanoj pločici dimenzija 42 mm x 24 mm. Razvijeni sustav postiže višednevnu autonomiju rada napajanjem iz Li-Po akumulatora kapaciteta 400 mAh.
Abstract (english)
A short overview of respiration monitoring methods has been presented in this master thesis. The influence of geometry of capacitive sensor electrodes on its characteristics was examined by means of electrostatic simulations and the format that achieves sufficient sensitivity and linearity was proposed, with additional benefit of being small and easy to produce. The characteristic obtained by simulation was compared to the characteristic measured on the sensor prototype. Components of the electronic system were chosen to allow continuous measurement of the sensor capacitance. The capacitance is measured by AD7746 integrated circuit, which provides high measurements resolution. The system is based on an ultra low power MSP430FR5969 microcontroller, and a Micro SD card is used for data storage. A user interface that allows system configuration and downloading recorded data is presented through an Android application running on a smartphone, which connects to the system via RN4020 Bluetooth LE module. Particular attention was paid to low power consumption and system compactness so all the components, including switching voltage regulator and integrated circuit for charging lithium batteries, are placed on a printed circuit board as small as 42 mm x 24 mm. The developed system can run continuously for several days powered by a single 400 mAh Li Po battery.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:047262
Study programmeTitle: Electrical Engineering and Information Technology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
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File originBorn digital
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Created on2018-02-06 10:30:45

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