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Ma, Xiaohu ; Wu, Guozheng ; Kanoun, Olfa ; Fischerauer, Alice ; Fischerauer, Gerhard:
Joint Simulation-Measurement Estimation of Distributed Parasitics in a Flexible PCB Sensor Matrix.
In:
Tagungsband : 23. ITG/GMA-Fachtagung Sensoren und Messsysteme 2026. -
Wunstorf
: AMA Service GmbH
,
2026
. - S. 132-137
ISBN 978-3-910600-11-9
DOI: https://doi.org/10.5162/sensoren2026/D1-2.2
Abstract
Distributed sensor networks based on impedance-based pressure sensors can be used for pressure field measurements. However, accurate impedance characterization of such sensor matrices is often compromised by distributed parasitics arising from transmission lines, connectors, and multiplexer switching paths. In this work, a hybrid simulation-measurement approach is presented to compensate for these parasitics in the transmission lines of a nanocomposite pressure sensor matrix fabricated on a flexible printed circuit board (FPCB) with 2x7 nodes for pressure distribution measurement. Impedances between all node pairs were measured from 50 kHz to 1 MHz using an Analog Discovery 2 impedance analyzer. After compensation, the proposed method was validated under multiple loading conditions of the sensor matrix, demonstrating good agreement between the corrected and expected impedance responses. Across the investigated frequency range, the RMS relative error in impedance magnitude across all measurements remained below 8%, with a forward-model RMS relative error of approximately 2.5% and an inverse reconstruction error below 10%, demonstrating the effectiveness of the parasitic compensation framework. This approach enables reliable extraction of intrinsic impedance, providing a foundation for subsequent analysis and applications such as machine-learning-based interpretation of sensor data.
Weitere Angaben
| Publikationsform: | Aufsatz in einem Buch |
|---|---|
| Begutachteter Beitrag: | Nein |
| Keywords: | Flexible PCB; simulation-measurement framework; compensation of distributed parasitics; impedance network |
| Institutionen der Universität: | Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Mess- und Regeltechnik Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Mess- und Regeltechnik > Lehrstuhl Mess- und Regeltechnik - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 11 Jun 2026 05:29 |
| Letzte Änderung: | 11 Jun 2026 05:29 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/97908 |