Wireless Material Identification in the Recycling Chain Using Chipless RFID Tags
The utility of chipless RFID technology for the identification of 8 materials (7 plastic types and glass) in the recycling chain is examined. We first demonstrate how the frequency response of 8 Circular Ring Resonators (CRR), designed to operate in the 1.5 - 6 GHz band, is used to encode 8 unique m...
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Published in | IEEE sensors journal Vol. 23; no. 13; p. 1 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
New York
IEEE
01.07.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subjects | |
Online Access | Get full text |
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Summary: | The utility of chipless RFID technology for the identification of 8 materials (7 plastic types and glass) in the recycling chain is examined. We first demonstrate how the frequency response of 8 Circular Ring Resonators (CRR), designed to operate in the 1.5 - 6 GHz band, is used to encode 8 unique material IDs. Tagged items are inserted one at a time in front of a chipless RFID reader and the speed and accuracy of material identification, based on the ability to decode the tag's frequency response, is determined. We demonstrate the ability to correctly identify material type using a random forest classifier with up to 93% accuracy while being 3-16X faster than other methods reported in the literature. A technique to further improve detection speed, taking measurements with lower resolution, at the cost of accuracy is then presented. Finally, future directions of exploration are discussed. |
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ISSN: | 1530-437X 1558-1748 |
DOI: | 10.1109/JSEN.2023.3279009 |