Uniform stress distribution road piezoelectric generator with free-fixed-end type central strike mechanism
| Autor: | Wonseop Hwang, Chul Hee Ryu, Jung Hwan Ahn, Jeong Hun Kim, Kyung-Bum Kim, Seong Do Hong, Yewon Song, Jae Yong Cho, Yooseob Song, Tae Hyun Sung, Jihoon Kim, Sang Bum Woo, Min Sik Woo, Deok Hwan Jeon, Se Yeong Jeong |
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| Rok vydání: | 2022 |
| Předmět: |
Battery (electricity)
business.industry Mechanical Engineering Building and Construction Pollution Piezoelectricity Industrial and Manufacturing Engineering Automotive engineering Mechanism (engineering) General Energy Black ice Road surface Environmental science Wireless Electrical and Electronic Engineering business Energy harvesting Energy (signal processing) Civil and Structural Engineering |
| Zdroj: | Energy. 239:121812 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2021.121812 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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