<p>Senzori vlažnosti zemljišta su od ključnog značaja za sisteme za navodnjavanje kojima je moguće uvećati prinose u proseku za 79%. U okviru ove disertacije razvijena su dva senzorska rešenja za merenje vlažnosti zemljišta. Prvi senzor je namenjen određivanju vlažnosti uzoraka zemljišta u neporemećenom stanju. Rešenje je nastalo nadogradnjom standardne opreme za uzorkovanje zemljišta. Za pomenuti senzor konstruisana je kalibraciona kriva kojom je moguće odrediti vlažnost zemljišta sa relativnom greškom ne većom od 2.5%. Drugo senzorsko rešenje je fabrikovano u LTCC tehnologiji, malih je dimenzija i namenjeno je primeni na terenu. Glavna prednost ovog senzora je da na njega ne utiče provodnost zemljišta koja je usko povezana sa tipom zemljišta. Predloženi senzor je testiran na dva uzorka zemljišta različitog hemijskog sastava. Rezultati merenja su pokazali da tip zemljišta nema uticaj na odziv senzora. Ostvarena relativna greška u odnosu na pun merni opseg iznosi 5.36%.</p> / <p>Soil moisture sensors are of great importance for the irrigation systems that<br />are able to increase the yiel on avarage of 79%. Within this thesis two sensor<br />solutions have been developed. The first sensor, which is intended for<br />laboratory use, has been designed by upgrading existing sampling<br />equipment. The constructed calibration curve for this type of sensor that can<br />be used for soil mositure determination with relative error not larger than<br />2.5% with respect to full scale output. The second sensor solution is<br />designed to be used in the field. It is fabricated in LTCC technology and it is<br />charaterized by small overall dimensions. The main advantage of this sensor<br />is that it is immune to the soil electrical conductivity which is closely related to<br />the soil type. Proposed sensor is tested on two soil sample of different<br />chemical composition and the results have shown that the type of soil does<br />not influence the sensor response. The relative error with the respect of full<br />scale output was only 5.36 %.</p>
| Identifer | oai:union.ndltd.org:uns.ac.rs/oai:CRISUNS:(BISIS)101479 |
| Date | 04 October 2016 |
| Creators | Kitić Goran |
| Contributors | Stojanović Goran, Crnojević-Bengin Vesna, Marković Vera, Radonić Vasa, Janković Nikolina |
| Publisher | Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, University of Novi Sad, Faculty of Technical Sciences at Novi Sad |
| Source Sets | University of Novi Sad |
| Language | Serbian |
| Detected Language | Unknown |
| Type | PhD thesis |
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