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

Seong Do Hong, Jung Hwan Ahn, Kyung-Bum Kim, Jeong Hun Kim, Jae Yong Cho, Min Sik Woo, Yewon Song, Wonseop Hwang, Deok Hwan Jeon, Jihoon Kim, Se Yeong Jeong, Sang Bum Woo, Chul Hee Ryu, Yooseob Song and Tae Hyun Sung

Energy, 2022, vol. 239, issue PA

Abstract: 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.

Keywords: Road-capable piezoelectric energy harvester; Uniform stress distribution structure; Free fixed end; Pavement technology; Real road; Black ice (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:239:y:2022:i:pa:s0360544221020600

DOI: 10.1016/j.energy.2021.121812

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