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Sensors 2014, 14(11), 20451-20467; doi:10.3390/s141120451

Spatial and Temporal Analysis on the Distribution of Active Radio-Frequency Identification (RFID) Tracking Accuracy with the Kriging Method

1
Australasian Joint Research Centre for Building Information Modelling, Curtin University, Bentley WA 6102, Australia
2
Woodside Energy Ltd., Perth 6000, Australia
3
Department of Housing and Interior Design, Kyung Hee University, Seoul 130-171, Korea
*
Author to whom correspondence should be addressed.
Received: 13 September 2014 / Revised: 21 October 2014 / Accepted: 23 October 2014 / Published: 29 October 2014
(This article belongs to the Section Sensor Networks)
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Abstract

Radio frequency identification (RFID) technology has already been applied in a number of areas to facilitate the tracking process. However, the insufficient tracking accuracy of RFID is one of the problems that impedes its wider application. Previous studies focus on examining the accuracy of discrete points RFID, thereby leaving the tracking accuracy of the areas between the observed points unpredictable. In this study, spatial and temporal analysis is applied to interpolate the continuous distribution of RFID tracking accuracy based on the Kriging method. An implementation trial has been conducted in the loading and docking area in front of a warehouse to validate this approach. The results show that the weak signal area can be easily identified by the approach developed in the study. The optimum distance between two RFID readers and the effect of the sudden removal of readers are also presented by analysing the spatial and temporal variation of RFID tracking accuracy. This study reveals the correlation between the testing time and the stability of RFID tracking accuracy. Experimental results show that the proposed approach can be used to assist the RFID system setup process to increase tracking accuracy. View Full-Text
Keywords: radio frequency identification (RFID); spatial analysis; spatial and temporal variation; tracking radio frequency identification (RFID); spatial analysis; spatial and temporal variation; tracking
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Liu, X.; Shannon, J.; Voun, H.; Truijens, M.; Chi, H.-L.; Wang, X. Spatial and Temporal Analysis on the Distribution of Active Radio-Frequency Identification (RFID) Tracking Accuracy with the Kriging Method. Sensors 2014, 14, 20451-20467.

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