Indirect impact based piezoelectric energy harvester for low frequency vibration

S. Ju; C. H. Ji

doi:10.1109/TRANSDUCERS.2015.7181325

Indirect impact based piezoelectric energy harvester for low frequency vibration

S. Ju, C. H. Ji

Electronic and Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

16 Scopus citations

Abstract

This paper presents an impact based piezoelectric vibration energy harvester using freely movable metal spheres as proof mass and an MFC (Macro Fiber Composite) beam as a piezoelectric cantilever. External vibration is transformed into free motion of metal spheres inside the channels and impact between the metal sphere and channel end induces a vibration of the MFC beam to generate electric power. A proof-of-concept device having the form-factor of a conventional wristwatch has been designed and tested to harvest energy from low frequency human-body-induced vibrations. Geometry at both ends of the cavities has been optimized to effectively transmit energy to piezoelectric cantilever and thus achieve a higher output power. For a device having an effective volume of 4.59cm³, maximum peak-to-peak open circuit voltage of 54V and RMS output power of 621μW have been achieved, when the fabricated energy harvester was mounted on a wristwatch and shaken manually.

Original language	English
Title of host publication	2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1913-1916
Number of pages	4
ISBN (Electronic)	9781479989553
DOIs	https://doi.org/10.1109/TRANSDUCERS.2015.7181325
State	Published - 5 Aug 2015
Event	18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015 - Anchorage, United States Duration: 21 Jun 2015 → 25 Jun 2015

Publication series

Name	2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015

Conference

Conference	18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
Country/Territory	United States
City	Anchorage
Period	21/06/15 → 25/06/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

Indirect impact
Macro fiber composite
Vibration energy harvesting

Access to Document

10.1109/TRANSDUCERS.2015.7181325

Cite this

Ju, S., & Ji, C. H. (2015). Indirect impact based piezoelectric energy harvester for low frequency vibration. In 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015 (pp. 1913-1916). Article 7181325 (2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/TRANSDUCERS.2015.7181325

Ju, S. ; Ji, C. H. / Indirect impact based piezoelectric energy harvester for low frequency vibration. 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015. Institute of Electrical and Electronics Engineers Inc., 2015. pp. 1913-1916 (2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015).

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title = "Indirect impact based piezoelectric energy harvester for low frequency vibration",

abstract = "This paper presents an impact based piezoelectric vibration energy harvester using freely movable metal spheres as proof mass and an MFC (Macro Fiber Composite) beam as a piezoelectric cantilever. External vibration is transformed into free motion of metal spheres inside the channels and impact between the metal sphere and channel end induces a vibration of the MFC beam to generate electric power. A proof-of-concept device having the form-factor of a conventional wristwatch has been designed and tested to harvest energy from low frequency human-body-induced vibrations. Geometry at both ends of the cavities has been optimized to effectively transmit energy to piezoelectric cantilever and thus achieve a higher output power. For a device having an effective volume of 4.59cm3, maximum peak-to-peak open circuit voltage of 54V and RMS output power of 621μW have been achieved, when the fabricated energy harvester was mounted on a wristwatch and shaken manually.",

keywords = "Indirect impact, Macro fiber composite, Vibration energy harvesting",

author = "S. Ju and Ji, {C. H.}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015 ; Conference date: 21-06-2015 Through 25-06-2015",

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Ju, S & Ji, CH 2015, Indirect impact based piezoelectric energy harvester for low frequency vibration. in 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015., 7181325, 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015, Institute of Electrical and Electronics Engineers Inc., pp. 1913-1916, 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015, Anchorage, United States, 21/06/15. https://doi.org/10.1109/TRANSDUCERS.2015.7181325

Indirect impact based piezoelectric energy harvester for low frequency vibration. / Ju, S.; Ji, C. H.
2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. 1913-1916 7181325 (2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - This paper presents an impact based piezoelectric vibration energy harvester using freely movable metal spheres as proof mass and an MFC (Macro Fiber Composite) beam as a piezoelectric cantilever. External vibration is transformed into free motion of metal spheres inside the channels and impact between the metal sphere and channel end induces a vibration of the MFC beam to generate electric power. A proof-of-concept device having the form-factor of a conventional wristwatch has been designed and tested to harvest energy from low frequency human-body-induced vibrations. Geometry at both ends of the cavities has been optimized to effectively transmit energy to piezoelectric cantilever and thus achieve a higher output power. For a device having an effective volume of 4.59cm3, maximum peak-to-peak open circuit voltage of 54V and RMS output power of 621μW have been achieved, when the fabricated energy harvester was mounted on a wristwatch and shaken manually.

AB - This paper presents an impact based piezoelectric vibration energy harvester using freely movable metal spheres as proof mass and an MFC (Macro Fiber Composite) beam as a piezoelectric cantilever. External vibration is transformed into free motion of metal spheres inside the channels and impact between the metal sphere and channel end induces a vibration of the MFC beam to generate electric power. A proof-of-concept device having the form-factor of a conventional wristwatch has been designed and tested to harvest energy from low frequency human-body-induced vibrations. Geometry at both ends of the cavities has been optimized to effectively transmit energy to piezoelectric cantilever and thus achieve a higher output power. For a device having an effective volume of 4.59cm3, maximum peak-to-peak open circuit voltage of 54V and RMS output power of 621μW have been achieved, when the fabricated energy harvester was mounted on a wristwatch and shaken manually.

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Y2 - 21 June 2015 through 25 June 2015

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Ju S, Ji CH. Indirect impact based piezoelectric energy harvester for low frequency vibration. In 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015. Institute of Electrical and Electronics Engineers Inc. 2015. p. 1913-1916. 7181325. (2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015). doi: 10.1109/TRANSDUCERS.2015.7181325

Indirect impact based piezoelectric energy harvester for low frequency vibration

Abstract

Publication series

Conference

Bibliographical note

Keywords

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