Uniform stress distribution road piezoelectric generator with free-fixed-end type central strike mechanism
- Authors
- Hong, S.D.; Ahn, J.H.; Kim, K.-B.; Kim, J.H.; Cho, J.Y.; Woo, M.S.; Song, Y.; Hwang, W.; Jeon, D.H.; Kim, J.; Jeong, S.Y.; Woo, S.B.; Ryu, C.H.; Song, Y.; Sung, T.H.
- Issue Date
- Jan-2022
- Publisher
- Elsevier Ltd
- Keywords
- Black ice; Free fixed end; Pavement technology; Real road; Road-capable piezoelectric energy harvester; Uniform stress distribution structure
- Citation
- Energy, v.239, pp.1 - 11
- Indexed
- SCOPUS
- Journal Title
- Energy
- Volume
- 239
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/139946
- DOI
- 10.1016/j.energy.2021.121812
- ISSN
- 0360-5442
- 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. © 2021 Elsevier Ltd
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