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Development of an Embedded System to Track the Movement of Bluetooth Devices based on RSSI
Background/Objectives: Received Signal Strength Indicator (RSSI) is used to determine the position of the Bluetooth device in an indoor environment. Much work had not been reported in tracking the movement of the device using RSSI measurements. It is proposed to design and develop a RSSI logger for a moving Bluetooth device and to analyse the data. Methods/Statistical Analysis: RSSI logger is an embedded system which tracks the distance of a moving Bluetooth user by measuring and logging the RSSI in a time continuous manner. The system is designed by using Raspberry Pi and HC05 Bluetooth devices. Linux Library packages and software are used for development of this Bluetooth tracking. Designed system will plot logged RSSI data on GNUPLOT with respective to other devices. Findings: The graphs are obtained for movement of the device in different scenarios. There is a good coherence observed between the plotted graph and the movement pattern. This will decide behaviour of the systems. RSSI values are useful to track the movement of the person and provide service accordingly, if user comes near an entity he can be serviced, if the user goes away service can be terminated. RSSI computation capability of the Bluetooth devices and Speed of Movement analysis of system observed and calculated. This will be useful in monitoring the movement of some objects within the range of the Bluetooth devices. Conclusion/Improvements: This system can be deployed to monitor and tracking objects moving in a speed of 1m/sec within the range of the Bluetooth devices in a cooperative environment.
Keywords
Bluetooth, Cooperative Movement, Distance, Plot, RSSI, Tracking
User
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