Characterization on Resonant Shifting of Cantilever Based Piezoelectric for Battery-Less Low Frequency Acceleration Measurement

Authors

  • Y.J. Bong Faculty of Electronic and Computer Engineering Universiti Teknikal Malaysia Melaka Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
  • S.L. Kok Faculty of Electronic and Computer Engineering Universiti Teknikal Malaysia Melaka Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia

Keywords:

Accelerometer, Energy Harvester, Linearity, Self-Powered,

Abstract

Piezoelectric cantilever is a structure that can translate maximum mechanical vibration energy into an electrical signal used as both sensor and generator or vice versa. At a frequency near to the resonant of the piezoelectric cantilever, larger deviation angle can be achieved which lead to potentially higher electrical power can be generated; therefore piezoelectric cantilever is mostly functioned as a micro-power generator at resonance region. While at a non-resonant frequency, the voltage output generated is rather linear and proportional to the acceleration level of the vibration; therefore in this non-resonance region, piezoelectric cantilever often functions as an accelerometer. This paper shows the potential of the ready-made piezoelectric cantilever to be altered in order to perform as a self-powered accelerometer which is independent to the influence of the frequency. The output response of the piezoelectric cantilever is characterized by modifying the length of the cantilever. The cantilever length is reduced in order to shift the resonant frequency region of the piezoelectric cantilevers to higher frequency region to make sure that the output is independent toward the vibrating frequency. The resonant frequency of cantilever at its original condition is 290H. After length reduction of 0.7cm, the resonant frequency increased to 320Hz. The resonant frequency of the cantilever continues shifted to 400Hz after length reduction of 1.0cm, 500Hz for length reduction of 1.2cm, and lastly 780Hz for length reduction of 1.5cm. After the resonant frequency of the cantilever is shifted to 780Hz, the linearity of the piezoelectric cantilever improved from 90% deviation at a frequency range of 100Hz to 250Hz, to 15% deviation at a frequency range of 100Hz to 300 Hz. These results show a major improvement in the linearity of the output of the piezoelectric cantilever when the resonant frequency is a shift away from the operating frequency.

References

A. Dastidar, 2013. Piezoelectric MEMS Accelerometer: A Case Study, AICTE Sponsored National Seminar on Nanosensors & Applications (NSNA-2013), pp. 28-34.

Mark, S., and Torben, R.L., 1987. Piezoelectric Accelerometers and Vibration Preamplifiers Theory and Application Handbook, Denmark.

M. Fauzi A.R. and KokS.L. 2011. Investigation of useful ambient vibration sources for the application of energy harvesting. In Proc of Student Conference on Research and Development (SCORED), pp. 391-396.

Inman, D. J., 2000. Engineering Vibrations, 2nd ed., Upper Saddle River, N.J.: Prentice Hall.

Mark, S., and Torben, R.L., 1987. Piezoelectric Accelerometers and Vibration Preamplifiers Theory and Application Handbook, Denmark.

Datasheet of Q220-A4, Piezo Systems, Inc. http://www.piezo.com/catalog8.pdf%20files/Cat8.42.pdf (accessed on 2nd April 2017).

Gambier, P., Anton, S.R., Kong, N., Erturk, A., and Inman, D.J., 2012. Piezoelectric, solar and thermal energy harvesting for hybrid low-power generator systems with thin-film batteries. Measurement Science and Technology, 23.

Bong. Y.J., and Kok. S.L., (2016), Parametric Studies on Resonance Frequency Variation for Piezoelectric Energy Harvesting With Varying Proof Mass and Cantilever Length, Journal of Telecommunication, Electronic and Computer Engineering, 8(5), pp 119-123.

L, Tang., Y, Yang., and C.K, Soh., 2013. Chapter 2 Broadband Vibration Energy Harvesting Techniques. Advances in Energy Harvesting Methods. Springer Science+Business Media, pp.17-61.

Yi, J.W., W.Y. Shih., and W.H. Shih., 2002. Effect of length, width, and mode on the mass detection sensitivity of piezoelectric unimorph cantilevers. Journal of Applied Physics, 91(3), pp.1680-1686.

Downloads

Published

2018-05-31

How to Cite

Bong, Y., & Kok, S. (2018). Characterization on Resonant Shifting of Cantilever Based Piezoelectric for Battery-Less Low Frequency Acceleration Measurement. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 10(2-2), 39–42. Retrieved from https://jtec.utem.edu.my/jtec/article/view/3956

Issue

Vol. 10 No. 2-2: Innovative and Sustainable Technologies for Societal Wellbeing II

Section

Articles

License

TRANSFER OF COPYRIGHT AGREEMENT

The manuscript is herewith submitted for publication in the Journal of Telecommunication, Electronic and Computer Engineering (JTEC). It has not been published before, and it is not under consideration for publication in any other journals. It contains no material that is scandalous, obscene, libelous or otherwise contrary to law. When the manuscript is accepted for publication, I, as the author, hereby agree to transfer to JTEC, all rights including those pertaining to electronic forms and transmissions, under existing copyright laws, except for the following, which the author(s) specifically retain(s):

  1. All proprietary right other than copyright, such as patent rights
  2. The right to make further copies of all or part of the published article for my use in classroom teaching
  3. The right to reuse all or part of this manuscript in a compilation of my own works or in a textbook of which I am the author; and
  4. The right to make copies of the published work for internal distribution within the institution that employs me

I agree that copies made under these circumstances will continue to carry the copyright notice that appears in the original published work. I agree to inform my co-authors, if any, of the above terms. I certify that I have obtained written permission for the use of text, tables, and/or illustrations from any copyrighted source(s), and I agree to supply such written permission(s) to JTEC upon request.