A High-Reliability Piezoelectric Tile Transducer for Converting Bridge Vibration to Electrical Energy for Smart Transportation
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Published:2023-05-17
Issue:5
Volume:14
Page:1058
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ISSN:2072-666X
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Container-title:Micromachines
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language:en
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Short-container-title:Micromachines
Author:
Pham Thanh Huyen1, Bui Thanh Danh2, Dao Toan Thanh1
Affiliation:
1. Faculty of Electrical-Electronic Engineering, University of Transport and Communications, No. 3 Cau Giay Street, Hanoi 100000, Vietnam 2. Faculty of Mechanical Engineering, University of Transport and Communications, No. 3 Cau Giay Street, Hanoi 100000, Vietnam
Abstract
Piezoelectric energy transducers offer great potential for converting the vibrations of pedestrian footsteps or cars moving on a bridge or road into electricity. However, existing piezoelectric energy-harvesting transducers are limited by their poor durability. In this paper, to enhance this durability, a piezoelectric energy transducer with a flexible piezoelectric sensor is fabricated in a tile protype with indirect touch points and a protective spring. The electrical output of the proposed transducer is examined as a function of pressure, frequency, displacement, and load resistance. The maximum output voltage and maximum output power obtained were 6.8 V and 4.5 mW, respectively, at a pressure of 70 kPa, a displacement of 2.5 mm, and a load resistance of 15 kΩ. The designed structure limits the risk of destroying the piezoelectric sensor during operation. The harvesting tile transducer can work properly even after 1000 cycles. Furthermore, to demonstrate its practical applications, the tile was placed on the floor of an overpass and a walking tunnel. Consequently, it was observed that the electrical energy harvested from the pedestrian footsteps could power an LED light fixture. The findings suggest that the proposed tile offers promise with respect to harvesting energy produced during transportation.
Funder
Ministry of Education and Training
Subject
Electrical and Electronic Engineering,Mechanical Engineering,Control and Systems Engineering
Reference18 articles.
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