Internet of things in agriculture

Ovaj rad prikazuje praktičnu izradu i primjenu znanja o ugradbenim sustavima kao tehnologija interneta stvari (eng. Internet of things) u kontekstu realne moderne problematike. Osnova projekta bazirana je na komunikaciji klijent-poslužitelj između pametnog uređaja sa Android OS i Raspberry Pi sa Raspbian OS, a komunikacija je implementirana kroz Java programski jezik. Interakcijom kroz klijentsko sučelje razvijeno u Android sustavu, korisnik može udaljenim putem kontrolirati rad ugradbenom sustava, tj. njegovim funkcionalnosti koje uključuju navodnjavanje i nadzor vrta te kontrolu razvijenog sustava za automatizaciju, čija logika na temelju očitanja vrijednosti senzora vlažnosti tla u kombinaciji sa očitanjem vremenske prognoze definira zadano vrijeme i trajanje navodnjavanja. Kroz poglavlja je uz same funkcionalnosti sustava objašnjeno i njegovo sklopovlje, uz periferiju, kao i način na koji je isto povezano i iskorišteno. Razrađena je ideja napajanja sustava solarnom energijom te postavljanja mobilne veze korištenjem USB modema, čime se omogućuje gotovo apsolutna portabilnost i samoodrživost sustava. Sukladno implementiranim funkcionalnostima, opisane su i mane istih kao te su predložena neka od unaprijeđenja, a uz dorade i modifikacije sustav bi mogao postati primjenjiv u realnosti.This paper presents the practical development and application of knowledge about embedded systems as part of IoT (Internet of things) technologies in context of real modern issues. The basis of the project is based on client-server communication between a smartphone with Android OS and Raspberry Pi with Raspbian OS, while communication itself is implemented through the Java programming language. By interacting through the user interface developed in Android Studio, the user can remotely control the operation of the embedded system, that is its functionalities, which include garden irrigation and monitoring as well as control of the developed automation system, whose logic takes into account the values of soil moisture sensor readings, combined with weather forecast defines the time and duration of irrigation. Through the chapters, in addition to the functionalities of the system itself, its hardware is explained, along with the periphery, as well as the way in which it is connected and used. The approach to powering the system with solar energy along with setting up a mobile connection using a USB modem offers almost absolute portability and self-sustainability of the system. In accordance with the implemented functionalities, the shortcombings of the same are described as well as some of the potential improvements. With additional refinements and modifications, the system could become applicable in reality