Title :
Ultrasonic transducers using piezoelectric PVDF films
Author :
Kroemer, N. ; Manthey, Wolfgang ; Kuenstler, Wolfgang ; Danz, Rudi ; Geiss, Detlev
Author_Institution :
Tech. Univ. Karl-Marx-Stadt, East Germany
Abstract :
Transducers using PVDF (poly(vinylidene fluoride)) films have certain advantages over conventional ceramic transducers. The broad frequency range allows a high resolution of the measured distance and a small minimum detection range. High reliability is achieved by microcomputer signal processing. Adaptation of acoustic parameters such as sound beam pattern and operating frequency to special measuring problems is effected by variation of geometrical transducer characteristics. Multielement transducers were also created for electronically controlled variation of sound beam patterns.<>
Keywords :
piezoelectric devices; polymer films; ultrasonic transducers; acoustic parameters; broad frequency range; electronically controlled variation; geometrical transducer characteristics; measuring problems; microcomputer signal processing; multielement transducers; operating frequency; piezoelectric PVDF films; polyvinylidene fluoride; reliability; sound beam pattern; ultrasonic transducers; Acoustic beams; Acoustic measurements; Acoustic transducers; Ceramics; Frequency measurement; Piezoelectric films; Piezoelectric transducers; Signal resolution; Ultrasonic transducers; Ultrasonic variables measurement;
Conference_Titel :
Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)
Conference_Location :
Oxford, UK
DOI :
10.1109/ISE.1988.38584
