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Energy and pulse control possibilities using ultra-tight integration of electronics and piezoelectric ceramics
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
2004 (English)In: 2004 IEEE Ultrasonics Symposium: 23 - 27 August 2004, Palais des Congrès, Montréal, Canada ; a conference of the IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society (UFFC-S) ; [part of IEEE International Ultrasonics, Ferroelectrics, and Frequency Control 50th Anniversary Joint Conference] / [ed] Marjorie Passini Yuhas, Piscataway, NJ: IEEE Communications Society, 2004, 2206-2210 p.Conference paper (Refereed)
Abstract [en]

This paper reports on investigations of the electrical energy needed to generate ultrasound pulses with piezoelectric crystals and compares measurements with system simulations using SPICE models. The piezoelectric device used is a 16 mm diameter Pz27 crystal with a nominal resonance frequency f/sub oos,nom/ of 4.4 MHz. An optimized ASIC driver stage with 5 V supply voltage is mounted directly on the piezoelectric crystal to generate square-wave excitation pulses. The absence of wiring between driver and crystal provides excellent pulse control possibilities. It is shown that the power consumption varies with the excitation pulse width, which also affects the received ultrasound energy in a pulse echo system. To achieve maximum output ultrasound energy, an excitation pulse width of 100 ns= 0.44/f/sub osc,nom/ should be used. At a repetition rate of 1 kHz, the power consumption including losses in the driver stage varies from 96 /spl mu/W for an excitation pulse width of 240 ns, up to 126 /spl mu/W for an excitation pulse width of 130 ns. The performed SPICE simulations agree well with measured data.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2004. 2206-2210 p.
Research subject
Industrial Electronics
URN: urn:nbn:se:ltu:diva-31209DOI: 10.1109/ULTSYM.2004.1418277Local ID: 552ab9f0-6cdc-11db-83c6-000ea68e967bISBN: 0-7803-8412-1OAI: diva2:1004439
IEEE Ultrasonics Symposium : 23/08/2004 - 27/08/2004
Godkänd; 2004; 20060929 (ysko)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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