20.500.12556/RUL-171952 Sonarji za merjenje globine vode in detekcijo rib Depth sounding and fish detection sonars V diplomi je predstavljena zasnova in izvedba sistema za zajem in analizo sonarskih signalov iz komercialnega sonarja Lowrance Eagle. V uvodnem delu so opisani osnovni principi sonarskih sistemov, njihova delitev ter fizikalni pojavi širjenja zvoka v vodi, pri čemer so uporabljeni ustrezni modeli širjenja akustičnih valov. V nadaljevanju je predstavljeno načrtovanje elektronskega vmesnika za zajem sonarskih signalov. Postopek zasnove tiskanega vezja je bil izveden v programskem okolju KiCad. Izdelan vmesnik omogoča povezavo sonarja in akustičnega pretvornika z merilno opremo, hkrati pa signal filtrira in ojača, kar zagotavlja pravilno zajemanje in boljšo kvaliteto podatkov. Praktični zajem signalov je bil izveden z uporabo osciloskopa, pridobljeni podatki pa so bili analizirani v programu Mathcad Professional. Analiza je zajemala določanje globine ter spremljanje sprememb amplitud sonarskih odbojev glede na globino. Rezultati analize zajetih signalov so primerjani z vrednostmi, ki jih navaja sonar, kar omogoča oceno natančnosti meritev. Delo tako prikazuje celoten proces od teoretične obravnave sonarskih sistemov, preko načrtovanja in izdelave vmesnika, do zajema, obdelave in analize sonarskih signalov. The thesis presents the design and implementation of a system for acquiring and analyzing sonar signals from the Lowrance Eagle sonar. The introductory part describes the basic principles of sonar systems, their classification, and the physical phenomena of sound propagation in water, using appropriate models of acoustic wave propagation. The following section presents the design of an interface for acquiring sonar signals, implemented in KiCad. The developed interface allows connection of the sonar to measurement equipment while filtering and amplifying the signal, ensuring correct acquisition and improved data quality. Practical signal acquisition was performed using an oscilloscope, and the collected data were analyzed in Mathcad Professional. The analysis included depth determination and monitoring changes in sonar reflection amplitudes with depth. The results of the acquired signals were compared with the values provided by the sonar, allowing for an assessment of measurement accuracy. The work thus demonstrates the entire process, from the theoretical study of sonar systems, through the design and implementation of the interface, to the acquisition, processing, and analysis of sonar signals. sonar akustični pretvornik obdelava signalov analiza sonarskih signalov merjenje globine morja Sonar transducer signal processing sonar signal analysis sea depth measurement true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-04 11:55:14 2025-09-04 11:55:18 2025-09-28 03:55:41 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 63079 248628227 Kosi_Martin_-_Sonarji_za_merjenje_globine_vode_in_detekcijo_rib.pdf Kosi_Martin_-_Sonarji_za_merjenje_globine_vode_in_detekcijo_rib.pdf 1 1394243C837B4E0E36E4061E0676FE3A 9a992125bc6ba5da1146b3e919b4a602a9d4a2f57dda4c1717ac363eb0c81107 1e6d369e-8975-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=215546 Fakulteta za elektrotehniko 0 0 0