Premium
Indoor navigation system using ID‐modulated LED tube lights
Author(s) -
Li Chang,
Sato Kosuke
Publication year - 2012
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.21767
Subject(s) - terminal (telecommunication) , orientation (vector space) , computer science , mobile device , mobile phone , real time computing , global positioning system , led lamp , light emitting diode , transmission (telecommunications) , position (finance) , navigation system , phone , terminal equipment , embedded system , computer hardware , telecommunications , electrical engineering , engineering , linguistics , philosophy , geometry , mathematics , finance , economics , operating system
This paper presents the design, implementation, and evaluation of a novel camera‐based information transmission system for indoor positioning and navigation. This system, which avoids the use of any expensive equipment, is of particular benefit for infrastructure consumption and is completely portable using a handheld terminal. A high‐intensity light‐emitting diode (LED) tube, which is expected to be the main illumination source for the next generation due to its lower power cost and longer lifetime, is utilized as an optical beacon in the system. LED tubes are encoded to transmit ID information, which is received by a single normal camera. The handheld computing terminal, a mobile phone for example, can query a database after performing ID recognition and, finally, the position and orientation of the terminal can be obtained. Experimental results confirm the accuracy of the system in terms of both position and orientation, and it is suitable for many indoor navigation applications. © 2012 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.