Simulation and Measurement of Air-Coupled Semi-Circular and Conical PVDF Sensors

For airborne sound navigation and ranging (SONAR) applications, low frequency and broadband transducers are required for the detection of obstacles with high axial resolution. In this paper, electrical and mechanical characteristics of semi-circular sensors and a semi-conical polyvinylidene fluoride...

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Bibliographic Details
Published in:IEEE sensors journal 2016-02, Vol.16 (4), p.983-988
Main Authors: Gurkan, Koray, Akan, Aydin
Format: Article
Language:English
Subjects:
Acoustic Sensors
Air Transducer
Circular PVDF
Comical PVDF
Dielectrics
Finite element analysis
Mathematical analysis
Navigation
Polymer Films
Polyvinylidene fluorides
Resonant frequency
Sensors
Simulation
Sonar
Transducers
Ultrasound
Vibrations
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Summary:For airborne sound navigation and ranging (SONAR) applications, low frequency and broadband transducers are required for the detection of obstacles with high axial resolution. In this paper, electrical and mechanical characteristics of semi-circular sensors and a semi-conical polyvinylidene fluoride (PVDF) sensor are compared through simulations and experiments. First, the implementation of semi-circular transducers and semi-conical transducer is presented. The electrical pulse, sine responses, dielectric impedance spectroscopy, and beam pattern measurements of transducers are achieved and compared. The vibration analysis of produced sensors was performed by a finite-element method and compared with experimental results. Experiments and simulations show that the semi-conical PVDF transducer has a higher bandwidth than the semi-circular transducers and it is suitable for low-frequency airborne pulse-echo ultrasound applications using single pulse or frequency chirped wave transducer.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2015.2490260