Title :
A Simple Wireless Batteryless Sensing Platform for Resistive and Capacitive Sensors
Author :
Ativanichayaphong, T. ; Wang, J. ; Huang, W. ; Rao, S. ; Chiao, J.C.
Author_Institution :
Univ. of Texas, Arlington
Abstract :
In this paper, a simple wireless platform to transduce data from sensors without the need for a battery in the sensors is introduced. The sensor can be either resistor-or capacitor-based. The sensing systems adapt RFID operation principles including a reader and a transponder. Our platform is fully analog and contains few components making it easy to implement with existing ICs and sensors. The platform for temperature sensing has been demonstrated. The device includes a 1times2.5 cm2 coil antenna and a thermistor. The read range is 4 cm using a 6times6 cm2 reader antenna powered at 970 kHz. A temperature range of 5-90degC is monitored resulting in read frequencies from 6 to 10 kHz.
Keywords :
capacitive sensors; temperature sensors; capacitive sensors; resistive sensors; temperature sensing; wireless batteryless sensing platform; Batteries; Capacitive sensors; Coils; Monitoring; Radiofrequency identification; Temperature distribution; Temperature sensors; Thermistors; Transponders; Wireless sensor networks;
Conference_Titel :
Sensors, 2007 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1261-7
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2007.4388355
