Title :
Wirelessly interrogable SAW-sensors for vehicular applications
Author :
Pohl, A. ; Seifert, F.
Author_Institution :
Lab. of Appl. Electron., Univ. of Technol., Vienna, Austria
Abstract :
Wirelessly interrogated passive SAW sensors for measurements in a rough environment are shown. These can be applied when remote readout is necessary and other sensors cannot withstand heat, dirt, mechanical vibration and/or electromagnetic interference. We show applications of passive SAW sensors for sensing tasks, especially in vehicles. The implementation of SAW sensors for measurements of torque and speed of revolution on transmission shafts is discussed. We present measurements of railway disc brake temperature by on-disc SAW sensors. Furthermore the wireless measurement of the air pressure in the tyres of road vehicles in motion is shown. The applied SAW sensors and the systems for interrogation are described, practical results are shown
Keywords :
angular velocity measurement; brakes; interdigital transducers; pressure sensors; remote sensing; road vehicles; surface acoustic wave delay lines; surface acoustic wave sensors; surface acoustic wave signal processing; temperature measurement; temperature sensors; torque measurement; EM RF interrogation signal; air pressure measurement; antenna connected; delay line type sensor; identification code sensing; interdigital transducers; on-disc SAW sensors; passive SAW sensors; railway disc brake temperature; remote readout; road vehicle tyres in motion; rough environment; speed of revolution measurement; torque measurement; transmission shafts; vehicular applications; wireless interrogated; Electromagnetic heating; Electromagnetic interference; Electromagnetic measurements; Mechanical sensors; Surface acoustic waves; Temperature sensors; Thermal sensors; Torque measurement; Vehicles; Vibrations;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE
Conference_Location :
Brussels
Print_ISBN :
0-7803-3312-8
DOI :
10.1109/IMTC.1996.507613
