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Self-Powered Wireless Temperature Sensors Exploit RFID Technology
January-March 2006 (vol. 5 no. 1)
pp. 54-61
Karn Opasjumruskit, Silicon Craft Technology
Thaweesak Thanthipwan, Silicon Craft Technology
Ohmmarin Sathusen, Silicon Craft Technology
Pairote Sirinamarattana, Silicon Craft Technology
Prachanart Gadmanee, Silicon Craft Technology
Eakkaphob Pootarapan, Silicon Craft Technology
Naiyavud Wongkomet, Silicon Craft Technology
Apinunt Thanachayanont, Silicon Craft Technology
Manop Thamsirianunt, Silicon Craft Technology
Emerging RFID technology lets us embed sensor units into a very small chip, creating a wireless sensing device. The authors bring together an embedded temperature sensor unit and passive RFID circuitry in a single-chip solution for future commercial smart sensors. This fully integrated CMOS batteryless device measures temperature and performs calibration to compensate for the sensor's inherent imperfections. An RF link using passive RFID's backscattering technique wirelessly transmits the data to a reading device while extracting power from the same "airwave," letting the device operate anywhere and last almost forever. The entire microchip, including the temperature sensor, consumes less than a few microamperes over a half a second, thus allowing the scanning device to capture data from a longer read distance.

This article is part of a special issue on RFID Technology.

Index Terms:
RFID, temperature sensor, integrated circuit, microchip
Citation:
Karn Opasjumruskit, Thaweesak Thanthipwan, Ohmmarin Sathusen, Pairote Sirinamarattana, Prachanart Gadmanee, Eakkaphob Pootarapan, Naiyavud Wongkomet, Apinunt Thanachayanont, Manop Thamsirianunt, "Self-Powered Wireless Temperature Sensors Exploit RFID Technology," IEEE Pervasive Computing, vol. 5, no. 1, pp. 54-61, Jan.-March 2006, doi:10.1109/MPRV.2006.15
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