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undergraduate thesis
Mjerenje vodljivosti tla elektromagnetskim induktivnim senzorom
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2016. urn:nbn:hr:168:986161
Lovrić, Marko
University of Zagreb
Faculty of Electrical Engineering and Computing

Institutional repository: FER Repository

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Lovrić, M. (2016). Mjerenje vodljivosti tla elektromagnetskim induktivnim senzorom (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:986161

Lovrić, Marko. "Mjerenje vodljivosti tla elektromagnetskim induktivnim senzorom." Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2016. https://urn.nsk.hr/urn:nbn:hr:168:986161

Lovrić, Marko. "Mjerenje vodljivosti tla elektromagnetskim induktivnim senzorom." Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2016. https://urn.nsk.hr/urn:nbn:hr:168:986161

Lovrić, M. (2016). 'Mjerenje vodljivosti tla elektromagnetskim induktivnim senzorom', Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 25 June 2024, https://urn.nsk.hr/urn:nbn:hr:168:986161

Lovrić M. Mjerenje vodljivosti tla elektromagnetskim induktivnim senzorom [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2016 [cited 2024 June 25] Available at: https://urn.nsk.hr/urn:nbn:hr:168:986161

M. Lovrić, "Mjerenje vodljivosti tla elektromagnetskim induktivnim senzorom", Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:168:986161

Metadata
TitleMjerenje vodljivosti tla elektromagnetskim induktivnim senzorom
Title (english)Measurement of soil conductivity using electromagnetic induction sensor
AuthorMarko Lovrić
MentorDarko Vasić (mentor)
Committee memberDarko Vasić (predsjednik povjerenstva)
Committee memberVedran Bilas (član povjerenstva)
Committee memberDinko Oletić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
Zagreb
Defense date and country2016-09-14, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Computing
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Abstract
Promjenjivo magnetsko polje može u okolnim vodičima inducirati struju. Zavojnica s izmjeničnom strujom stvara promjenljivo magnetsko polje oko sebe. Osim struje u prijemnoj zavojnici, induciraju se i vrtložne struje u drugim vodljivim materijalima. Sekundarno magnetsko polje unosi promjenu faze i amplitude u prijemnu zavojnicu. Analognom i digitalnom obradom signala s prijemne zavojnice možemo odrediti iznos promjene. Osnovni prototip EM induktivnog senzora sastavljen je u laboratoriju. Sastojao se od jedne odašiljačke i dvije prijemne zavojnice. Signal sa prijemnih zavojnica je pojačan, anuliran, doveden do DAQ kartice i konačno na računalo gdje je obavljena digitalna fazno osjetljiva demodulacija. Senzor je na kraju detektirao promjenu vodljivosti testnih primjeraka, odnosno različite koncentracije soli (NaCl) u posudi s vodom. Dobiveni rezultati su se mijenjali sukladno s promjenom vodljivosti.
Abstract (english)
A changing magnetic field can induce electrical current in the conductors nearby. A coil with alternating current creates a variable magnetic field around itself. In addition to the current in the receiving coil, there are also induced eddy currents in the other conductive materials around. The secondary magnetic field brings a change of phase and amplitude to the receiving coil. Analog and digital processing of the signal from the receiving coil can accurately determine the amount of change. A basic prototype of an EM inductive sensor was assembled in the laboratory. It consisted of one transmitting and two receiving coils. The signal from the receiving coil was amplified and brought to the DAQ card and finally to the computer, where a digital phase-sensitive demodulation was performed. The sensor finally detected a change of conductivity in the test specimens, which were different concentrations of salt (NaCl) in the water beneath it. The results were changing in accordance with the change of conductivity in the samples.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:986161
Study programmeTitle: Electrical Engineering and Information Technology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
Type of resourceText
File originBorn digital
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Created on2018-02-06 10:10:22