Optimization of Electrical Oscillators for an Efficient Operation of Resonant Piezoelectric Sensors
Wich M, Hubert F, Helmerich J, Rupitsch SJ (2022)
Publication Language: English
Publication Type: Conference contribution, Conference Contribution
Publication year: 2022
Publisher: VDE VERLAG GMBH
Series: ITG/GMA-Fachtagung Sensoren und Messsysteme
City/Town: Berlin, Offenbach
Book Volume: 21.
Pages Range: 297-300
Conference Proceedings Title: 21. ITG/GMA-Fachtagung Sensoren und Messsysteme 2022
Event location: Nürnberg
URI: https://www.ama-science.org/direct/tagungsband-sensoren-und-messsysteme-2022
Open Access Link: https://www.ama-science.org/direct/tagungsband-sensoren-und-messsysteme-2022
Abstract
Many piezoelectric sensor concepts, such as quartz crystal microbalances or piezoelectric temperature sensors, exploit the frequency shift of their resonance frequency as an electric output signal. The resonance frequency of the sensor has to be converted into a frequency-proportional output signal by a subsequent oscillator circuit. Therefore, reliable sensor data processing requires a matching of the resonance frequency and the oscillator frequency at any ambient condition. This contribution focuses on the design of low-cost oscillators with a piezoelectric sensor as the frequency-determining component. Different oscillator topologies will be analyzed regarding their suitability for measurement data processing. In order to achieve a simple and efficient circuit layout, we developed a hybrid design concept based on analytical models and circuit simulations. Experimental results, based on a piezoelectric temperature sensor, prove the proposed design concepts. In the temperature range from -20 °C to 85 °C, an extremely small deviation of less than 0.2 % between the resonance frequency and the oscillator frequency was obtained.
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How to cite
APA:
Wich, M., Hubert, F., Helmerich, J., & Rupitsch, S.J. (2022). Optimization of Electrical Oscillators for an Efficient Operation of Resonant Piezoelectric Sensors. In 21. ITG/GMA-Fachtagung Sensoren und Messsysteme 2022 (pp. 297-300). Nürnberg, DE: Berlin, Offenbach: VDE VERLAG GMBH.
MLA:
Wich, Manfred, et al. "Optimization of Electrical Oscillators for an Efficient Operation of Resonant Piezoelectric Sensors." Proceedings of the Sensoren und Messsysteme 2022, Nürnberg Berlin, Offenbach: VDE VERLAG GMBH, 2022. 297-300.
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