Title :
Radio signals for SAW ID tags and sensors in strong electromagnetic interference
Author :
Pohl, A. ; Seifert, F. ; Reindl, L. ; Scholl, G. ; Ostertag, T. ; Pietsch, W.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
The applicability of wirelessly interrogated passive ID-tag type SAW sensors for measurements of the temperature of disc brakes of moving railway cars is shown. Here, a short radio channel allows relatively simple radio impulse processing by phase evaluation. Further, using elastic convolver measurement in large steel works, we discuss the feasibility of passive SAW sensors in a severely obstructed radio channel with interference. For such environments radio signals of the spread spectrum type and a receiver with the corresponding correlative SAW structure or a RAKE receiver are appropriate for remote readout
Keywords :
electromagnetic interference; identification; radiotelemetry; remote sensing; spread spectrum communication; surface acoustic wave correlation; surface acoustic wave sensors; temperature measurement; RAKE receiver; SAW ID tags; SAW sensors; correlative SAW structure; disc brake temperature measurement; elastic convolver measurement; electromagnetic interference; industrial applications; moving railway cars; phase evaluation; radio impulse processing; remote readout; severely obstructed radio channel; short radio channel; spread spectrum type; strong EMI; wireless interrogated passive sensors; Electromagnetic interference; Identification; Radio telemetry; Remote sensing; Spread spectrum communication; Surface acoustic wave correlators; Surface acoustic wave detectors; Temperature measurement;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401578
