Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):
J. Kellner, H. Schweinzer:
"Piezoceramic Ultrasound Transducer Enabling Broadband Trasmission for 3D Scene Analysis in Air";
Vortrag: Sensor+Test Conference,
Nürnberg, Deutschland;
26.05.2009
- 28.05.2009; in: "Proceedings Sensor 2009",
Vol. 1
(2009),
S. 53
- 58.
Kurzfassung englisch:
Frequency-modulated ultrasound signals like chirp-signals show variations in phase at the different transmission angles. Analyzing the phase of ultrasound chirp-echoes enables to accurately determine distance and polar angle to the point of reflection. Though single piezoceramic ultrasound transducers have a small bandwidth, an ultrasound transducer made of a combination of piezoceramic elements with different resonance frequencies as presented in this work enables transmission of braoadband chirpsignals and shows the required rotational symmetry.