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- W2143745592 abstract "Most of the commercially available air ultrasonic transducers are ceramic based and operate at 40 kHz. This paper describes a method to design and build ultrasonic transducers using low-cost piezoelectric Polyvinylidene Fluoride (PVDF) film. The transducer has a semi-conical geometry, which provides a higher bandwidth, low ringing time compared to traditional ceramic ultrasonic transducers. We have built a prototype sensor and compared its typical characteristics with a commercially available ceramic transducer. In experiments, pulse compression technique used to detect reflected ultrasonic waves with a high SNR. We found it to be practical for applications requiring short-range obstacle detection and distance measurement." @default.
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- W2143745592 date "2011-12-01" @default.
- W2143745592 modified "2023-09-24" @default.
- W2143745592 title "Design of a broadband semi-conical PVDF ultrasonic sensor for obstacle detection applications" @default.
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