RFID monitoring for Assistive Technologies beyond the Clinic

A UHF RFID tilt angle and location sensing system is described for tracking users of assistive or rehabilitative technologies in their homes. Results show 3-axis accelerometer angles can be read at 10 Hz, and location within a room can be determined within 0.5 m resolution. A skinmounted microstrip patch antenna is proposed for the RFID communications and power harvesting.