Software for continous recording of inertial sensor signals from mobila phones and sensor nodes

U ovom radu rješava se problem dohvata i obrade podataka u realnom vremenu sa senzorskog čvora i mobilnog uređaja na Android platformi. Koristi se relativno nova Bluetooth Low Energy ( Bluetooth Smart ) tehnologija, koja efikasno odašilje manje količine podataka sa malom potrošnjom energije. Razvijena je Android aplikacija sa nekoliko segmenata, prikaz podataka u realnom vremenu dohvaćenih sa senzorskog čvora, te usporedni prikaz podataka sa senzora mobitela i čvora. Android nativno podržava Bluetooth Low Energy tehnologiju i ima cijeli niz funkcija za čitanje i pisanje prema čvoru. Dohvaćanje i obrada podataka u realnom vremenu zahtjeva poseban način rada. FlexyNet je ponudio rješenje sa svojim cikličnim „bufferom“. Ovakva implementacija se pokazala kao pouzdan i brz način dohvata i obrade, te prikaza podataka u realnom vremenu između senzorskog čvora i mobitela. Bluetooth Low Enegry tehnologija ima jako široku primjenu i u budućnosti očekujem da se puno uređaja zasniva na ovoj tehnologiji.This paper solves the problem of the reach and processing real-time data from sensor nodes and mobile devices on the Android platform. It is using a relatively new Bluetooth Low Energy (Bluetooth Smart) technology, which efficiently transmits small amounts of data with low power consumption. Android applications was developed with several segments, displaying real-time data retrieved from the sensor node, and a comparative overview of data from the sensor node and a cell phone. Android natively supports Bluetooth Low Energy technology and has a range of functions for reading and writing to the node. Retrieval and data processing in real time requires a special approach. FlexyNet offered a solution with its cyclical "buffered". This implementation proved to be a reliable and fast way to reach, process and display data in real time between a sensor node and a cell phone. Bluetooth Low Enegry technology has very wide application use in the future, I expect a lot of devices based on this technology