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Ultra-low-power RFID-based sensor mote

: Gay, N.; Fischer, W.-J.


Institute of Electrical and Electronics Engineers -IEEE-; Institute of Electrical and Electronics Engineers -IEEE-, Sensor Council:
IEEE Sensors 2010. Vol.2 : The 9th Annual IEEE Conference on Sensors, November 1-4, 2010, Waikoloa, Hawaii
New York, NY: IEEE, 2010
ISBN: 978-1-4244-8170-5
ISBN: 1-4244-8170-8
ISBN: 978-1-4244-8168-2
Conference on Sensors <9, 2010, Waikoloa/Hawaii>
Conference Paper
Fraunhofer IPMS ()

This paper deals with the design and implementation of flexible, fully integrated sensor motes for ubiquitous sensor networks based on a established, long-range RFID technology. The battery-less mote is made up of a single-chip solution incorporating a microwave RFID-front-end, an 8-bit microcontroller, a low-power temperature sensor, a reconfigurable sensor interface, a 10-bit SAR ADC, a full-fledged I2C digital interface and non-volatile memory for program and sensor data. Overall power consumption lies under 7W at a readout distance of 3 m. The temperature sensor works from -20 up to +60°C with a precision of +/-0.5°C and 16 bits resolution. A fully-passive demonstration system with external commercial sensors including pressure, humidity and acceleration sensors was implemented and tested.