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Low-Cost, Ubiquitous RFID-Tag-Antenna-Based Sensing

Author(s)
Bhattacharyya, Rahul; Floerkemeier, Christian; Sarma, Sanjay E
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Abstract
Radio-frequency identification (RFID) has been well established as an effective technology for track and trace applications. In this paper, we go beyond the ID in RFID, and discuss the potential for RFID tags to be used as low-cost sensors by mapping a change in some physical parameter of interest to a controlled change in RFID tag antenna electrical properties. We will also show that it is possible to design the tag antenna to suffer a permanent change in case of violation of a critical threshold in the parameter of interest thereby creating a low-cost threshold sensing mechanism. This can be achieved by inducing controlled changes to the tag antenna geometry parameters or to the antenna boundary conditions, in effect creating a nonelectric memory to monitor state. After identifying the application space for which this class of sensing is well suited, we present details into the design and testing of three different kinds of sensors based on this sensing paradigm. We demonstrate how we use this concept to sense displacements, temperature thresholds, and fluid levels. We will show that RFID-tag-antenna-based sensing has the potential to revolutionize application domains in which there is a need for low-cost, long-lasting, ubiquitous sensors.
Date issued
2010-09
URI
http://hdl.handle.net/1721.1/65654
Department
Massachusetts Institute of Technology. Auto-ID Laboratory; Massachusetts Institute of Technology. Department of Civil and Environmental Engineering; Massachusetts Institute of Technology. Laboratory for Manufacturing and Productivity
Journal
Proceedings of the IEEE
Publisher
Institute of Electrical and Electronics Engineers
Citation
Bhattacharyya, Rahul, Christian Floerkemeier, and Sanjay Sarma. “Low-Cost, Ubiquitous RFID-Tag-Antenna-Based Sensing.” Proceedings of the IEEE 98 (2010): 1593-1600. ©2011 IEEE.
Version: Final published version
Other identifiers
INSPEC Accession Number: 11476858
ISSN
0018-9219

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