Publication detail

An Automated measurement system for measuring an overall power efficiency and a characterisation of piezo harvesters

KUNZ, J. FIALKA, J. BENEŠ, P. HAVRÁNEK Z.

Original Title

An Automated measurement system for measuring an overall power efficiency and a characterisation of piezo harvesters

Type

conference paper

Language

English

Original Abstract

Systems for measurement power characteristics of piezo harvesters in dependence on a frequency and a load resistance are not commonly used due its complexity. Therefore, the parameters are usually measured manually near its resonant frequency. In some cases, it is convenient to measure the characteristics in a broader range of parameters. Then, in order to achieve more precise results and effective measurement we decided to develop our own measurement system. The system controls an effective value of vibrations, sets a frequency and a load resistance for measuring a power generated by a piezo harvester and measures a tip displacement of the harvester. These quantities are used for a characterisation of piezo harvesters. Moreover, the voltage and current on vibration exciter are measured to evaluate the overall efficiency of the harvester. The system was tested on a harvester MIDE PPA-1001 for various added weights and vibration levels from 0.1 to 0.5 g. The measured data analysed and the efficiency was calculated as a ratio between a vibration power consumed by the harvester and its electrical output. The evaluated overall efficiency varies between 10 and 15 % nearby its optimal working conditions.

Keywords

Energy harvesting, piezo-harvester, Measurement system, vibration

Authors

KUNZ, J.; FIALKA, J.; BENEŠ, P.; HAVRÁNEK Z.

Released

5. 9. 2018

Publisher

IOP Publishing

Location

Belfast

ISBN

1742-6596

Periodical

Journal of Physics: Conference Series

Year of study

1065

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

4

Pages count

4

URL

http://iopscience.iop.org/article/10.1088/1742-6596/1065/20/202008

Full text in the Digital Library

http://hdl.handle.net/11012/137094

BibTex

@inproceedings{BUT150413,
  author="Jan {Kunz} and Jiří {Fialka} and Petr {Beneš} and Zdeněk {Havránek}",
  title="An Automated measurement system for measuring an overall power efficiency and a characterisation of piezo harvesters",
  booktitle="Congress Proceedings as Institute of Physics",
  year="2018",
  journal="Journal of Physics: Conference Series",
  volume="1065",
  number="1",
  pages="1--4",
  publisher="IOP Publishing",
  address="Belfast",
  doi="10.1088/1742-6596/1065/20/202008",
  issn="1742-6596",
  url="http://iopscience.iop.org/article/10.1088/1742-6596/1065/20/202008"
}