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Title: A new self-powered sensor using the radial field piezoelectric diaphragm in d33 mode for detecting underwater disturbances
Authors: Zhang, Xingxu
Shan, Xiaobiao
Shen, Zhiyuan
Xie, Tao
Miao, Jianmin
Keywords: Radial Field Diaphragm
DRNTU::Engineering::Mechanical engineering
Piezoelectric Sensors
Issue Date: 2019
Source: Zhang, X., Shan, X., Shen, Z., Xie, T., & Miao, J. (2019). A new self-powered sensor using the radial field piezoelectric diaphragm in d33 mode for detecting underwater disturbances. Sensors, 19(4), 962-. doi:10.3390/s19040962
Series/Report no.: Sensors
Abstract: This paper presents a new sensor based on a radial field bulk piezoelectric diaphragm to provide energy-efficient and high-performance situational sensing for autonomous underwater vehicles (AUVs). This sensor is self-powered, does not need an external power supply, and works efficiently in d33 mode by using inter-circulating electrodes to release the radial in-plane poling. Finite element analysis was conducted to estimate the sensor behavior. Sensor prototypes were fabricated by microfabrication technology. The dynamic behaviors of the piezoelectric diaphragm were examined by the impedance spectrum. By imitating the underwater disturbance and generating the oscillatory flow velocities with a vibrating sphere, the performance of the sensor in detecting the oscillatory flow was tested. Experimental results show that the sensitivity of the sensor is up to 1.16 mV/(mm/s), and the detectable oscillatory flow velocity is as low as 4 mm/s. Further, this sensor can work well under a disturbance with low frequency. The present work provides a good application prospect for the underwater sensing of AUVs.
ISSN: 1424-8220
DOI: 10.3390/s19040962
Rights: © 2019 The Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
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