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Wireless Identification and Sensing Platform (WISP) is a battery free and fully software defined Radio Frequency Identification (RFID) tag. WISP is an open source architecture that allows exploration to integrate with several sensors and other devices. It has a 16 bit ultra-low power microcontroller that can be used for the computation and sensing purpose. The power harvesting unit of the WISP is capable to exclusively drive the sensor that is integrated with the WISP from the RF energy. However the firmware of WISP is not fully compatible with Electronic Product Code (EPC) class 1 Generation 2 protocol. The thesis work focus on the compatibility of the WISP according to the EPC class 1 Gen 2 protocol. The communication link is successfully implemented between the WISP and the UHF reader with Miller-2 encoding. The proper handshaking signals (Query, RN16, Req_RN, ACK and ACCESS) for the communication between the WISP and the reader is implemented. The comparative discussions about different EPC protocols are also discussed in this thesis. |
