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Enabling field intelligence with RFID tag antenna-based sensors Dr. Rahul Bhattacharyya Prof. Sanjay Sarma
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© Auto ID Labs, MIT Slide 2 of 15 The Internet is for Things… Eventually The lab agenda
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© Auto ID Labs, MIT Slide 3 of 15 Research themes Interoperability Extensibility Beyond ID: RFID tags as sensors
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© Auto ID Labs, MIT Slide 4 of 15 Beyond the ‘ID’ in RFID Why RFID for sensing? Proven track record of pervasive deployment Low cost RFID tag manufacturing Standardized reader-tag communication Free adoption in RFID-enabled processes Question: How to add sensing functionality at low-cost?
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© Auto ID Labs, MIT Slide 5 of 15 RFID Reader RFID Tag RFID-based sensing
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© Auto ID Labs, MIT Slide 6 of 15 2 Examples Field Moisture Sensor Surface Crack Detector
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© Auto ID Labs, MIT Slide 7 of 15 Example 1: Field moisture sensing
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© Auto ID Labs, MIT Slide 8 of 15 Moisture sensor design Antenna IC Monopole probe Sand
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© Auto ID Labs, MIT Slide 9 of 15 Moisture sensor results
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© Auto ID Labs, MIT Slide 10 of 15 Example 2: Surface crack detection 1 in 4 US bridges are structurally deficient (NYT 2009)
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© Auto ID Labs, MIT Slide 11 of 15 Crack sensor prototype Antenna Tag IC
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© Auto ID Labs, MIT Slide 12 of 15 Crack sensor results
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© Auto ID Labs, MIT Slide 13 of 15 Conclusion Theme of extensibility Scope of RFID for pervasive sensing
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© Auto ID Labs, MIT Slide 14 of 15 Relevant Publications A. Hasan, R. Bhattacharyya and S. Sarma, "A Monopole- Coupled RFID Sensor For Pervasive Soil Moisture Monitoring,” accepted at the IEEE International Symposium on Antennas and Propagation: Special Session on Advances in RFID Sensing, 2013. P. Kalansuriya, R. Bhattacharyya and S. Sarma, "An antenna- based RFID expansion joint monitor,” accepted at the IEEE International Symposium on Antennas and Propagation: Special Session on Advances in RFID Sensing, 2013. P. Kalansuriya, R. Bhattacharyya and S. Sarma, "RFID Tag Antenna-Based Sensing for Pervasive Surface Crack Detection", IEEE Sensors Journal, 2013.RFID Tag Antenna-Based Sensing for Pervasive Surface Crack Detection
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© Auto ID Labs, MIT Slide 15 of 15
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