Communication technologies for transmitting data from heterogeneous IoT devices

U radu se ispituju različite komunikacijske tehnologije za stvaranje bežične senzorske mreže i prijenos podataka od senzorskog čvora do mrežnog prilaza. Rad pripada području Interneta stvari i rezultati rada mogu biti iskorišteni prilikom izrade bežičnih senzorskih mreža u pametnim kućama. Korištene komunikacijske tehnologije su XBee 802.15.4 (EU), Bluetooth Low Energy, LoRaWAN i WiFi. Kao senzorski čvor korišten je Libelium Waspmote, a na mrežnom prilazu korišten je Raspberry Pi 2 model B i platforma Eclipse Kura. Opisani su načini konfiguracije pojedinih tehnologija i isječci programskih kodova za prijenos podataka, kao i trenutne prednosti i nedostatci svake. Opisani su i svi problemi u radu s navedenim tehnologijama.Various communication technologies for creating wireless sensor network and transmitting sensor data from sensor node to gateway were tested in this paper. This work belongs to area of Internet of Things and results of this work may be used for creating wireless sensor networks in smart homes. XBee 802.15.4 (EU), Bluetooth Low Energy, LoRaWAN and WiFi communication technologies were used. Libelium Waspmote was used as a sensor node and Rapsberry Pi 2 Model B with Eclipse Kura IoT platform as a gateway. Configuration of specific technologies and comments on source code snippets for data transmission were documented, just as current pros and cons of specific technology. Every problem that appeared during work with specific technology was described