Design and performance of a cantilever piezoelectric power generation device for real-time road safety warnings

Shuai Wang, Chaohui Wang, Zhiwei Gao and Hongyun Cao

Applied Energy, 2020, vol. 276, issue C, No S0306261920310242

Abstract: This paper presents a batch-processable cantilever piezoelectric device suitable for road traffic conditions, and the power it converts can provide a real-time safety warning for automobiles in hazardous areas. Based on road traffic characteristics, environment characteristics and construction convenience, a multilayer vertical butterfly array piezoelectric device with high sensitivity is designed. Furthermore, to verify the reliability of the device for the early warning in the laboratory stage, the power generation rules under different traffic conditions are studied systematically, and the applicable situations in different combinations of automobile types and speeds are clarified. Finally, the effects of instantaneous safety warning are verified, and the installation measure of device is determined. The results indicate that the power effect of the device first increases and then decreases with the increase in the speed (Corresponding to the vibration frequency generated by the axles of automobile). The power effect of a single device is optimal when simulating a light traffic conventional speed of 50–90 km/h (7–11 Hz), the maximum electrical output is 26 V-22.09 mW; while the power under heavy traffic is relatively poor, which is 20.8 V-7.84 mW. Moreover, the flashing effect of warning sign powered by a single device is better under the speeds, and the devices will be installed in front of the hidden section in piece-by-piece. The clean electric energy converted by the piezoelectric device will be helpful for real-time road safety early warning, reduce power loss for long-distance transmission of power grids, and promote the process of intelligent transportation applications.

Keywords: Energy-harvesting; Piezoelectric device; Cantilever; Power generation effect; Real-time safety warnings; Road engineering (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261920310242
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:276:y:2020:i:c:s0306261920310242

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2020.115512

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().