Title :
A Second Generation In-Car Tire Pressure Monitoring System Based on Wireless Passive SAW Sensors
Author :
Dixon, B. ; Kalinin, V. ; Beckley, J. ; Lohr, R.
Author_Institution :
Transense Technol. plc, Bicester
Abstract :
A complete pre-production in-car tire pressure monitoring system, employing 433 MHz SAW resonators as sensing elements is presented in this paper. The SAW sensing element incorporating three one-port resonators fabricated on a single substrate and connected to an antenna is described, along with calibration models for the sensor. An issue of sensor antenna tuning and sensor matching is investigated. A method of SAW sensor wireless interrogation is presented and the electronic interrogation unit is described. Experimental data characterizing accuracy of the remote resonant frequency measurement is presented
Keywords :
circuit tuning; pressure measurement; pressure sensors; surface acoustic wave resonators; surface acoustic wave sensors; wireless sensor networks; 433 MHz; SAW resonators; SAW sensor wireless interrogation; electronic interrogation unit; remote resonant frequency measurement; second generation in-car tire pressure monitoring system; sensor antenna tuning; sensor matching; surface acoustic wave devices; wireless passive SAW sensors; Antenna measurements; Calibration; Monitoring; Resonant frequency; Sensor phenomena and characterization; Sensor systems; Surface acoustic waves; Tires; Tuning; Wireless sensor networks;
Conference_Titel :
International Frequency Control Symposium and Exposition, 2006 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0074-0
Electronic_ISBN :
1-4244-0074-0
DOI :
10.1109/FREQ.2006.275414
