DocumentCode :
742989
Title :
Efficient Object Localization Using Sparsely Distributed Passive RFID Tags
Author :
Po Yang ; Wenyan Wu ; Moniri, M. ; Chibelushi, Claude C.
Author_Institution :
Fac. of Comput., Eng. & Technol., Staffordshire Univ., Stafford, UK
Volume :
60
Issue :
12
fYear :
2013
Firstpage :
5914
Lastpage :
5924
Abstract :
Radio-frequency identification (RFID) technology has been widely used in passive RFID localization application due to its flexible deployment and low cost. However, current passive RFID localization systems cannot achieve both highly accurate and precise moving object localization task owing to tag collisions and variation of the behavior of tags. Most researchers increase the density of tag distribution to improve localization accuracy and then consider using either anti-collision process embedded in the hardware of the RFID reader or advanced localization algorithms to enhance localization precision. However, advanced anti-collision processes for RFID devices are challenged by the physical constraint characteristics of radio frequency; and improved localization algorithm cannot fundamentally reduce the impacts of tag collision on localization precision. This research work attempts to improve localization precision of a passive RFID localization system by using sparsely distributed RFID tags. This paper first defines a measure for accuracy and precision in a passive RFID localization system with regard to RFID tag distribution. An exponential-based function is then derived from experimental measurements, which reflects the relationship between RFID tag distribution and localization precision. This function shows that localization precision is mainly determined by tag density of RFID tag distribution. Based on the experimental findings, a sparse RFID tag distribution approach is proposed. The results show that in comparison with the conventional RFID tag distribution, passive RFID localization system with sparse RFID tag distribution can deliver a higher localization precision for the required accuracy.
Keywords :
radiofrequency identification; radionavigation; RFID reader; RFID technology; anticollision process; efficient object localization; exponential based function; localization accuracy; object localization; passive RFID localization application; passive RFID localization systems; physical constraint characteristics; radio frequency; sparsely distributed passive RFID tags; tag collisions; tag distribution; Bridge circuits; Capacitors; Inductors; Inverters; Pulse width modulation; Switches; Accuracy; object localization; precision; radio-frequency identification (RFID); tag distribution;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2012.2230596
Filename :
6365313
Link To Document :
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