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Open AccessArticle

Localization of Moving Objects Based on RFID Tag Array and Laser Ranging Information

1
School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China
2
Department of Computer Science, Lasbela University of Agriculture, Water and Marine Sciences, Balochistan 90150, Pakistan
3
Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(8), 887; https://doi.org/10.3390/electronics8080887
Received: 25 June 2019 / Revised: 26 July 2019 / Accepted: 6 August 2019 / Published: 10 August 2019
(This article belongs to the Section Microwave and Wireless Communications)
RFID (radio-frequency identification) technology is rapidly emerging for the localization of moving objects and humans. Due to the blockage of radio signals by the human body, the localization accuracy achieved with a single tag is not satisfactory. This paper proposes a method based on an RFID tag array and laser ranging information to address the localization of live moving objects such as humans or animals. We equipped a human with a tag array and calculated the phase-based radial velocity of every tag. The laser information was, first, clustered through the DBSCAN (Density-Based Spatial Clustering of Applications with Noise) algorithm and then laser-based radial velocity was calculated. This velocity was matched with phase-based radial velocity to get best matching clusters. A particle filter was used to localize the moving human by fusing the matching results of both velocities. Experiments were conducted by using a SCITOS G5 service robot. The results verified the feasibility of our approach and proved that our approach significantly increases localization accuracy by up to 25% compared to a single tag approach. View Full-Text
Keywords: moving object localization; human tracking; RFID tag array; laser clustering; velocity matching; particle filter; DBSCAN; UHF RFID moving object localization; human tracking; RFID tag array; laser clustering; velocity matching; particle filter; DBSCAN; UHF RFID
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MDPI and ACS Style

Ur Rehman, S.; Liu, R.; Zhang, H.; Liang, G.; Fu, Y.; Qayoom, A. Localization of Moving Objects Based on RFID Tag Array and Laser Ranging Information. Electronics 2019, 8, 887.

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