University of Oulu

M. Laurila et al., "Evaluation of Printed P(VDF-TrFE) Pressure Sensor Signal Quality in Arterial Pulse Wave Measurement," in IEEE Sensors Journal, vol. 19, no. 23, pp. 11072-11080, 1 Dec.1, 2019. doi: 10.1109/JSEN.2019.2934943

Evaluation of printed P(VDF-TrFE) pressure sensor signal quality in arterial pulse wave measurement

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Author: Laurila, Mika-Matti1; Peltokangas, Mikko2; Montero, Karem Lozano1;
Organizations: 1Faculty of Information Technology and Communication Sciences, Tampere University, Korkeakoulunkatu 3, 33720, Tampere, Finland
2Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
3Microelectronics Research Unit, Oulu University, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.5 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2019-09-20


In this contribution, we evaluate the performance of an additively fabricated piezoelectric poly(vinylidenefluoride-cotrifluoroethylene) (P(VDF-TrFE)) based dynamic pressure sensor in non-invasive arterial pulse wave (PW) measurement. Additively fabricated piezoelectric sensors have high potential for the realization of affordable and unobtrusive PW measurement systems which could enable the long-term monitoring of patients with cardiovascular diseases (CVDs). However, the accuracy and reliability of such sensors have not been extensively studied before. We propose an additive fabrication process for a P(VDF-TrFE) PW-sensor, measure PW from the radial artery at the wrist from 22 healthy volunteer subjects, calculate clinically relevant parameters based on the PW waveform and compare their values to the values obtained from concurrent measurement with an electromechanical film (EMFi) based reference sensor, used earlier in several clinical studies. We show that the signals recorded with the two sensors, as well as the radial augmentation index (rAIx) and the stiffness index (SI) calculated from them, are in good agreement with each other. These results demonstrate that the additively fabricated P(VDF-TrFE) PW sensors can reach a suitable level of accuracy and reliability for clinical use.

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Series: IEEE sensors journal
ISSN: 1530-437X
ISSN-E: 1558-1748
ISSN-L: 1530-437X
Volume: 19
Issue: 23
Pages: 11072 - 11080
DOI: 10.1109/JSEN.2019.2934943
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported by Academy of Finland under Grant #310617, #310618, and #320019. M. Mäntysalo is supported by Academy of Finland Grants #288945 and #319408. A. Vehkaoja is supported by Academy of Finland Grant #292477.
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