Lead-Zirconate-Titanate Acoustic Energy Harvester Equipped with Sound-Collecting Helmholtz Resonator

DOI Web Site 35 References
  • MATSUDA Tomohiro
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University
  • TOMII Kazuki
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University
  • IIZUMI Satoshi
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University
  • TOMIOKA Shungo
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University
  • KIMURA Shu
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University
  • TSUJIMOTO Kyohei
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University
  • UCHIDA Yusuke
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University
  • HAGIWARA Saori
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University
  • MIYAKE Shuntaro
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University
  • NISHIOKA Yasushiro
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University

Search this article

Abstract

Acoustic energy harvesters that function in environments where sound pressure is extremely high (∼150dB), such as in engine rooms of aircraft, are expected to be capable of powering wireless health monitoring systems. This paper presents the power generation performance of a lead-zirconate-titanate (PZT) acoustic energy harvester with a vibrating PZT diaphragm. The diaphragm had a diameter of 2mm, consisting of Al (0.1µm)/PZT (1µm)/Pt (0.1µm)/Ti (0.1µm)/SiO2 (1.5µm). The harvester generated a power of 5×10-14W under a sound pressure level of 110dB at the first resonance frequency of 6.28kHz. It was found that the generated power was increased to 2.0×10-13W using a sound-collecting Helmholtz resonator cone with a height of 60mm. The cone provided a Helmholtz resonance at 5.8kHz, and the generated power increased from 9.7×10-15W to 7.3×10-13W at this frequency. The cone was also effective in increasing the bandwidth of the energy harvester.

Journal

References(35)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top