My Smart BT: a Bluetooth-based android application for controlling IoT appliances using graphical analysis of sensor data

Abstract

Increasing use of smartphones with control systems and wireless sensor networks is in mainstream. Among this scenario, internet of things emerges to connect real-time objects like smartphones, sensors and actuators to the internet, providing communication among them and facilitating mobility. This paper focuses on android operating system-based Bluetooth serial port profile (SPP) application - My Smart BT. It collects the real-time sensor data from connected controller interfaced with application specific sensors, displays the data on the screen and streams the data to the server simultaneously. Wireless internet connections and Bluetooth are used for real-time data transmissions between the connected devices. For testing purpose, light sensor, motion sensor and SPP Bluetooth module are interfaced with Intel Galileo Gen 2-based testbed to interpret the real-time sensor data. Besides, PHP-based central MySQL server database is used for real-time data storage and graphical analysis. Application is evaluated by different segment of users.