Journal
SENSORS
Volume 19, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/s19071657
Keywords
velocity measurement; PVDF film
Funding
- Acoustic Science and Technology Laboratory, Harbin Engineering University [SSJSWDZC2018010]
- National Science Foundation of China [11874131]
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To measure the flow velocity of a fluid without affecting its motion state, a method was proposed based on a polyvinylidene fluoride (PVDF) piezoelectric film sensor. A self-made PVDF piezoelectric sensor placed parallel with the flow direction was used to measure the flow velocity. First, the piezoelectric characteristics of PVDF were obtained theoretically. Next, the relationship between flow velocity and sound pressure was verified numerically. Finally, the relationship between flow velocity and the electrical output of the PVDF piezoelectric film was obtained experimentally. In conclusion, the proposed method was shown to be reliable and effective.
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