Structure simulation optimization and test verification of piezoelectric energy harvester device for road

Wang, Chaohui; Yu, Gongxin; Cao, Hongyun; Wang, Shuai; Li, Yanwei

doi:10.1016/j.sna.2020.112322

Cited by 13 publications

(2 citation statements)

References 24 publications

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“…The piezoelectric ceramic PZT-5H was chosen in this work in consideration of its structural durability and electrical stability. To reduce energy loss and increase service life, researchers have optimized piezoelectric transducers to layered bridge [36], stacked [37], and multilayer cantilever [38] structures. However, these structures have not been widely used due to complex preparation processes or high costs.…”

Section: Structuresmentioning

confidence: 99%

Performance Assessment and Comparison of Two Piezoelectric Energy Harvesters Developed for Pavement Application: Case Study

Liu

Zhao

et al. 2022

Sustainability

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To advance the development of piezoelectric energy harvesters, this study designed and manufactured bridge-unit-based and pile-unit-based piezoelectric devices. An indoor material testing system and accelerated pavement test equipment were used to test the electrical performance, mechanical performance, and electromechanical coupling performance of the devices. The results showed that the elastic modulus of the pile structure device was relatively higher than that of the bridge structure device. However, the elastic modulus of the two devices should be improved to avoid attenuation in the service performance and fatigue life caused by the stiffness difference. Furthermore, the electromechanical conversion coefficients of the two devices were smaller than 10% and insensitive to the load magnitude and load frequency. Moreover, the two devices can harvest 3.4 mW and 2.6 mW under the wheel load simulated by the one-third scale model mobile load simulator, thus meeting the supply requirements of low-power sensors. The elastic modulus, electromechanical conversion coefficients, and electric performance of the pile structure device were more reliable than those of the bridge structure device, indicating a better application prospect in road engineering.

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Section: Structuresmentioning

confidence: 99%

Performance Assessment and Comparison of Two Piezoelectric Energy Harvesters Developed for Pavement Application: Case Study

Liu

Zhao

et al. 2022

Sustainability

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“…Deformation or force will act upon the surface of pavement when peoples walk through the road, and the contained potential energy can be collected by using electromagnetic or piezoelectric harvesters [ 4 , 5 , 6 , 7 , 8 ]. As a simple electromagnetic mode, the vertical displacement exerted by pedestrians can be directly loaded onto the harvester to produce a relative motion between the magnet and coil, which can generate electric currents in the coil as a linear generator according to Faraday’s principle [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

A Pavement Piezoelectric Energy Harvester for Small Input Displacements

et al. 2023

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In order to collect mechanical energy from human motions on pavement without an obvious disturbance, a piezoelectric harvester for small displacement is proposed. A seesaw mechanism is utilized to transmit the pressure displacement to piezoelectric beams. Benefitting from the superiority of used axially deformed beams, the designed scheme can produce a higher voltage than the ones based on the conventional bending cantilever. Favorable electrical energy is achieved by the manufactured prototype under a displacement lower than 1 mm. Two practical applications, including charging a capacitor and powering an environmental sensing node, demonstrate the feasibility of this energy harvester in supplying power for engineering devices. The proposed device shows a favorable capacity to capture energy from humans walking on pavements. Also, this category of axially deformed beam could provide ideas for developing piezoelectric harvesters under small displacements.

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Effect evaluation of road piezoelectric micro-energy collection-storage system based on laboratory and on-site tests

Wang

Gao

et al. 2021

Applied Energy

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Structure simulation optimization and test verification of piezoelectric energy harvester device for road

Cited by 13 publications

References 24 publications

Performance Assessment and Comparison of Two Piezoelectric Energy Harvesters Developed for Pavement Application: Case Study

Performance Assessment and Comparison of Two Piezoelectric Energy Harvesters Developed for Pavement Application: Case Study

A Pavement Piezoelectric Energy Harvester for Small Input Displacements

Effect evaluation of road piezoelectric micro-energy collection-storage system based on laboratory and on-site tests

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