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http://dx.doi.org/10.5762/KAIS.2021.22.1.786

Improvement of Indoor Positioning Accuracy using Smart LED System Implementation  

Lee, Dong Su (Department of Information Communication Engineering, Yuhan University)
Huh, Hyeong Seok (FaceSystem)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.22, no.1, 2021 , pp. 786-791 More about this Journal
Abstract
In this paper, in order to minimize limitations such as signal interference and positioning errors in existing indoor positioning systems, a smart LED-based positioning system for excellent line-of-sight radio environments and precise location tracking is proposed to improve accuracy. An IEEE 802.4 Zigbee module is mounted on the SMPS board of a smart LED; RSSI and LQI signals are received from a moving tag, and the system is configured to transmit the measured data to the positioning server through a gateway. For the experiment, the necessary hardware, such as the gateway and the smart LED module, were separately designed, and the experiment was conducted after configuring the system in an external field office. The positioning error was within 70cm as a result of performing complex calculations in the positioning server after transmitting a vector value of the moving object obtained from the direction sensor, together with a signal from the moving object received by the smart LED. The result is a significantly improved positioning error, compared to an existing short-range wireless communications-based system, and shows the level at which commercial products can be implemented.
Keywords
Indoor Positioning System; Smart LED; DALI; Zigbee; RSSI; LQI;
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