Range-based user positioning system based on Internet of Things (IoT)

Teh, Chee Wan (2022) Range-based user positioning system based on Internet of Things (IoT). Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

	Text (24 Pages) Range-based user positioning system based on Internet of Things (IoT).pdf - Submitted Version Download (484kB)
	Text (Full text) Range-based user positioning system based on Internet of Things (IoT).pdf - Submitted Version Restricted to Repository staff only Download (3MB)

Abstract

Real-time location of user has become critical for service deployment in many fields. Global Positioning System has been wildly succeeded but it is less accurate to locate users at the place where the GPS or satellite technologies are lack precision. For this reason, a project of Range-Based User positioning system based on Internet of Things (IoT) have been proposed and developed. The system is based on Node MCU (ESP32) and it will collect RSSI from the BLE beacon. Log-Distance and ITU propagation models have been embedded to compute distance estimation from collected RSSI vector. The system will be connected to the IoT Platform and notify PIC when the user exceed certain range through Telegram application. Then, the range estimation for indoor Line-of-Sight and indoor Non-Line-of-Sight were analysed using both propagation models as mentioned. Kalman filter is also implemented to mitigate the effect of multipath fading. The estimated range utilizing Log-Distance and ITU propagation models were compared to the actual distance to analyse error of range-based accuracy in term of RMSE and CDF. The CDF shows 90% of distance estimation error using model ITU for LOS is lower than 3.6 meters while for NLOS is 5.6 meters. Whereas 90% of distance estimation error using model Log-Distance for LOS is lower than 4.1 meters while for NLOS is 7.2 meters.

Actions (login required)

View Item