Real-time communication between mobile applications and sensors

V diplomskem delu predstavimo tehnologije in protokole, ki omogočajo realno-časovno komunikacijo med mobilnimi aplikacijami in senzorji. Z uporabo protokola MQTT na praktičnem primeru nadzora ogrevanja stanovanja predstavimo njihovo uporabnost in lastnosti. Začnemo z izdelavo senzorja temperature, ki podatke zaznava in sporoča, ter centralnega strežnika, ki jih obdela, se na njih odzove in jih posreduje do končnega odjemalca. Nadaljujemo z izdelavo mobilne aplikacije, ki v tem primeru predstavlja končnega odjemalca. Aplikacija podatke v realnem času prikazuje in uporabniku omogoča nadzor nad ogrevanjem. Mobilno aplikacijo dopolnimo z izdelavo aplikacije za pametno uro. Ta s pomočjo obvestil in lokacijskih podatkov uporabnika opozori na vklop ali izklop varčnega načina ogrevanja. V zaključku dela preverimo, ali smo z uporabo namenske tehnologije uspeli prihraniti na količini prenesenih podatkov in pohitriti njihovo prejemanje.In this diploma paper technologies and protocols that enable real-time communication between mobile applications and sensors are presented. On the basis of the heating control system, the usefulness and features of the protocol MQTT are described. We start with the production of temperature sensor and central server. The temperature sensor detects and reports data and the central server processes, responds, and forwards data to the final client. Then, the creation of mobile application follows which in this case is represented as the final client. The application shows the data in real time and it allows the user to control the heating. The mobile application is updated by the smart watch. The smart watch alerts the customer via notifications and local data to enable or disable the energy-efficient heating. In the conclusion we check whether we have saved on the amount of transferred data and if the data receivement is speeded up