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Journal of Engineering
Volume 2017, Article ID 3850835, 15 pages
https://doi.org/10.1155/2017/3850835
Research Article

Experimental Study on RFID Antenna Reading Areas in a Tunnel System

1BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland
2Aitosolutions Oyj, Kangasala, Finland

Correspondence should be addressed to Kai Kordelin; ue.niledrok@iak

Received 14 March 2017; Accepted 27 July 2017; Published 30 August 2017

Academic Editor: Yuh-Shyan Hwang

Copyright © 2017 Kai Kordelin et al. 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.

Abstract

We study optimized antenna reading area mappings for a radiofrequency identification- (RFID-) based access monitoring system, used in an underground nuclear waste storage facility. We shortly introduce the access monitoring system developed for the ONKALO tunnel in Finland and describe the antenna mounting points as well as the research area. Finally, we study the measurement results of the antenna reading areas and factors that affect the reading area size. Based on our results, in addition to antenna location and direction, absorption to obstacles, reflections, diffraction, scattering, and refraction affect the antenna reading area.