Microcontroller-base Semipassive UHF RFID tag
Send to :
10/1/2012
 
In this project, a prototype of a semi-passive UHF RFID tag was developed that is compatible with the leading UHF RFID standard EPCglobal Gen 2 Class 1. The tag has the flexible I2C and analog digital converter(ADC) interface, which allows the additional of external analog and digital sensors. The sensor data can be read by microcontroller and stored at memory. Standard reader can get sensor data by sending standard EPCglobal Gen 2 Class 1 commands. Test results of our open platform semi-passive UHF RFID tag demonstrated that it can achieve a read rate above 50% when an open platform semi-passive UHF RFID tag is placed four meters from the reader antenna and the reader output power is set to 21 dBm. In addition, the proposed semi-passive open platform RFID tag consumes very little power (4.9 mA in 2V with system frequency set to 8MHz).

The project was funded by NSERC Discovery grant and resulted in a M.Sc. thesis of Tzu Hao Li.
[ Related Items ]
Using RFID technology for mining services applications
Augmented RFID UHF C1G2 system
Microcontroller-base Semipassive UHF RFID tag