Piezoelectric sensor array for passive fish-like underwater sensing

• Main Authors: Asadnia, M., Triantafyllou, Michael S., Kottapalli, Ajay G. P., Shen, Zhiyuan, Miao, Jianmin
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Mechanical engineering
• Online Access: https://hdl.handle.net/10356/99130; http://hdl.handle.net/10220/12750
• Institution: Nanyang Technological University

The paper reports the fabrication, characterization, and experimental results of a piezoelectric MEMS pressure sensor array for underwater sensing applications. An array of five PZT sensors is developed that can perform passive fish-like underwater sensing. The array is capable of locating underwater objects by transducing the pressure variations generated by moving objects. Individual sensors have a low foot-print of 1.8 × 1.8 mm and do not consume any power for their operation. The array's ability in locating a vibrating sphere stimulus underwater, is explained through proof-of-concept experiments.