Uniform stress distribution road piezoelectric generator with free-fixed-end type central strike mechanism

A self-powered energy harvester for real roads to predict and detect black ice formation and pinpoint dangerous road sections was developed. An open-type piezoelectric device was developed for a high-efficiency module to achieve uniform stress distribution for enhanced energy harvesting performance...

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Bibliographic Details
Published in:Energy (Oxford) 2022-01, Vol.239, p.121812, Article 121812
Main Authors: Hong, Seong Do, Ahn, Jung Hwan, Kim, Kyung-Bum, Kim, Jeong Hun, Cho, Jae Yong, Woo, Min Sik, Song, Yewon, Hwang, Wonseop, Jeon, Deok Hwan, Kim, Jihoon, Jeong, Se Yeong, Woo, Sang Bum, Ryu, Chul Hee, Song, Yooseob, Sung, Tae Hyun
Format: Article
Language:English
Subjects:
Black ice
Energy distribution
Energy harvesting
Free fixed end
Ice formation
Pavement technology
Piezoelectricity
Real road
Road-capable piezoelectric energy harvester
Roads
Roads & highways
Stress
Stress distribution
Temperature sensors
Uniform stress distribution structure
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Summary:A self-powered energy harvester for real roads to predict and detect black ice formation and pinpoint dangerous road sections was developed. An open-type piezoelectric device was developed for a high-efficiency module to achieve uniform stress distribution for enhanced energy harvesting performance by free-fixed-end type central strike mechanism. The output performance of the open-type device was 80% higher than that of the closed-type device. A uniform stress distribution road piezoelectric generator (URPG) with 120 open-type devices was installed on real roads. The URPG showed output power performance of up to 2.38 mW/cm3 when a vehicle passed once under the condition of being buried 2.5 cm below the road surface. The URPG can operate a wireless temperature sensor monitoring system for 83 s and charge a cellphone battery for 53 s. The developed self-powered energy harvesters can be used to reduce accidents caused by black ice on real roads. •We developed self-powered energy harvesters for real roads.•The goal was to detect black ice formation and find dangerous road sections.•We developed an open-type piezoelectric device for a high-efficiency module.•A uniform stress distribution road piezoelectric generator (URPG) was installed.•The URPG can operate a wireless temperature sensor and charge a cellphone.
ISSN:0360-5442
1873-6785
DOI:10.1016/j.energy.2021.121812