A novel communication method for semi-passive RFID based sensors
Author(s)Kalansuriya, Prasanna; Bhattacharyya, Rahul; Sarma, Sanjay Emani
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This paper presents a novel communication method for semi-passive RFID based sensors. The new method uses a digitally reconfigurable UHF RFID tag antenna to modulate sensed information at an RFID tag on to the received signal strength indicator (RSSI) response perceived at an RFID reader. This technique is completely compatible with the existing class 1 generation 2 UHF air interface protocol thereby enabling the use of existing RFID reader infrastructure to decode the additional sensed information. The effect of read distance, environment and bit duration on the performance of the communication method is examined through measurements obtained from a prototype. Through experimental verification, it is demonstrated that error free transmission of sensor information can be achieved up to 3.5 meters in different environments with a bit duration of 500 ms. Prospective future research directions are also discussed.
DepartmentMassachusetts Institute of Technology. Auto-ID Laboratory; Massachusetts Institute of Technology. Laboratory for Manufacturing and Productivity
Proceedings of the 2014 IEEE International Conference on Communications (ICC)
Institute of Electrical and Electronics Engineers (IEEE)
Kalansuriya, Prasanna, Rahul Bhattacharyya, and Sanjay Sarma. “A Novel Communication Method for Semi-Passive RFID Based Sensors.” 2014 IEEE International Conference on Communications (ICC) (June 2014).
Author's final manuscript