Study of a piezoelectric energy harvesting floor structure with force amplification mechanism
Open accessAbstract
This paper proposes a novel energy harvesting floor structure using piezoelectric elements for converting energy from human steps into electricity. The piezoelectric energy harvesting structure was constructed by a force amplification mechanism and a double-layer squeezing structure in which piezoelectric beams were deployed. The generated electrical voltage and output power were investigated in practical conditions under different strokes and step frequencies. The maximum peak-to-peak voltage was found to be 51.2 V at a stroke of 5 mm and a step frequency of 1.81 Hz. In addition, the corresponding output power for a single piezoelectric beam was tested to be 134.2 μW, demonstrating the potential of harvesting energy from the pedestrians for powering low-power electronic devices.
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A voltage magnitude of 49 V peak-to-peak was achieved at a 5 mm stroke.
“A voltage magnitude of 49 V (peak-to-peak) was achieved at a 5 mm stroke.”
From A review of piezoelectric energy harvesting tiles: Available designs and future perspective (2022) · cites this paper as [98]
Section 3.2 (p. 6) says the experiments included a 5 mm stroke. The available passage in Section 3.3 reports peak-to-peak voltages of about 52.2 V and 51.4 V at different step frequencies, but does not report 49 V at a 5 mm stroke. (LLM, conf=0.83)
Experimental — accuracy not yet measuredA force amplification mechanism using a double-layer squeezing mechanism overcame the issue of substrate absorbing force and reducing tensile stress in the piezoelectric element.
“This issue was overcome by employing a force amplification mechanism for achieving the bending of piezoelectric beams through a double-layer squeezing mechanism [98].”
From A review of piezoelectric energy harvesting tiles: Available designs and future perspective (2022) · cites this paper as [98]
The Introduction (page unavailable) describes a force-amplification mechanism and double-layer squeezing structure designed to deflect piezoelectric beams and provide stress to the elements. It does not say that the mechanism overcame force absorption by a substrate or the resulting reduction in tensile stress. (LLM, conf=0.84)
Experimental — accuracy not yet measuredThe maximum power output of one beam was 134.2 μW for a step frequency of 1.84 Hz, while the total power output of 40 such beams under a single tile was 5.368 mW.
“The maximum power output of one beam was 134.2 µ W for a step frequency of 1.84 Hz, while the total power output of 40 such beams under a single tile was 5.368 mW.”
From A review of piezoelectric energy harvesting tiles: Available designs and future perspective (2022) · cites this paper as [98]
Section 3.3 discusses a tested piezoelectric beam and says output power increased with step frequency, but the passage gives voltage measurements at 0.95 and 1.81 Hz, not the claimed power figures. Searches for 134.2 µW, 1.84 Hz, 40 beams, and 5.368 mW found no passage in our copy establishing those values. (LLM, conf=0.73)
Experimental — accuracy not yet measured
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- Authors
- He, M., Wang, S., Zhong, X., & Guan, M.
- Affiliations
- Xiamen University (CN)
- Corresponding author
- Guan, Mingjie
- Venue
- Energies
- Publisher
- MDPI AG
- Published
- 2019-09-12
- Volume
- 12
- Issue
- 18
- Pages
- 3516
- ISSN
- 1996-1073 (ISSN-L)
- OpenAlex
- W2972334152
- Cited by
- 28
- References
- 18
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 5 · 2023: 3 · 2022: 5 · 2021: 1 · 2020: 5 · 2019: 1
- FWCI
- 1.69
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Energies (publishedVersion, cc-by)
- RePEc: Research Papers in Economics (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Natural Science Foundation of China (51777177, 51707168)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Innovative Energy Harvesting Technologies
- Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
- Physical Sciences › Engineering › Civil and Structural Engineering › Structural Engineering and Vibration Analysis
- Keywords
- piezoelectric energy harvesting, floor structures, piezoelectric beam, cadence, output power, low-power devices
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