Research and design of LED indoor positioning system

Liu Yinhui, Luo Wei, Zhao Hang, V. Yepes, L. Wang, W. Qin
2020 E3S Web of Conferences  
According to indoor positioning requirements, the light intensity sensing circuit is designed with LED as the light source. The function relationship between light intensity and distance is obtained by fitting the experimental data. The distance from the light source to the node to be located is calculated. The coordinate position of the node to be measured on the two-dimensional plane is obtained through the trilateral measurement and positioning algorithm. The experimental results of this
more » ... results of this system show that the absolute position error is less than 10cm, which can meet the needs of a large number of indoor positioning applications.
doi:10.1051/e3sconf/202016504049 fatcat:bfscioi2bzgppe254vd5c6acou