A Pavement Piezoelectric Energy Harvester for Small Input Displacements

Yin, Bin; Wei, Jiaming; Jiang, Xin; Liu, Yan

doi:10.3390/mi14020292

Cited by 4 publications

(3 citation statements)

References 27 publications

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“…However, due to the limited energy density of conventional batteries, which necessitate regular replacement or recharging, they are susceptible to rapid deterioration under various operating conditions, resulting in a short effective lifespan and environmental pollution. Consequently, it becomes challenging to meet the demands of the fast-paced development of microelectronic products [5][6][7]. Therefore, the technology of harnessing diverse forms of energy from the environment to power low-energy electronic devices has garnered increasing scholarly attention.…”

Section: Introductionmentioning

confidence: 99%

Design and experimental investigation of a positive feedback magnetic-coupled piezoelectric energy harvester

Shi,

Chen,

et al. 2024

Smart Mater. Struct.

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A positive feedback magnetic-coupled piezoelectric energy harvester is proposed to address the limitations of current piezoelectric energy collectors, including restricted acquisition direction, limited acquisition bandwidth, and low energy output. Firstly, the dynamic theoretical model of the energy harvester was established, and the optimization factors were explored, providing a solid theoretical foundation for subsequent research endeavors. The energy capture characteristics of rectangular beam and compound trapezoidal beam were compared through finite element simulation analysis. Subsequently, an experimental platform was constructed and an optimized experimental methodology was devised to analyze the energy capture characteristics and enhance the performance of the energy harvester. The results demonstrate that the positive feedback magnetic-coupled piezoelectric energy harvester with a trapezoidal beam exhibits superior energy capture efficiency. Furthermore, it is observed that the optimized energy harvester possesses wide frequency coverage, multi-directional capabilities, low-frequency adaptability, and facilitates easy vibration. When the 45kΩ resistor is connected in series and subjected to a longitudinal external excitation amplitude of 0.5g, it is capable of generating an average voltage and power output of 4.20V and 0.39mW respectively at a vibration frequency of 9Hz. Similarly, when exposed to a transverse external excitation amplitude of 1g, it can produce an average voltage output of 6.2V and power output of 0.85mW at a vibration frequency of 19Hz. When the inclination angle of the energy harvester is set to 35 degrees, the maximum voltage output occurs at a frequency of 18Hz and the Z-axis to X-axis force ratio of the energy harvester is 1.428. These research findings can serve as valuable references for piezoelectric energy harvesting applications in self-powered microelectronic systems.

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Section: Introductionmentioning

confidence: 99%

Design and experimental investigation of a positive feedback magnetic-coupled piezoelectric energy harvester

Shi,

Chen,

et al. 2024

Smart Mater. Struct.

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“…Pursuing progress in clean, renewable and sustainable energy has become a critical issue to replace conventional energy sources [ 1 ]. In the meantime, the widespread application of high-performance devices in wireless sensor networks (WSNs) and the Internet of Things (IoT), e.g., wearable electronics, sensors, tags, data transmitters and microprocessors, has extended their appearance in building monitoring, climate information acquisition, smart factories/traffic/homes, personal healthcare and environmental monitoring, which is greatly excited by advances in material science, manufacturing techniques and ecofriendly concepts [ 2 , 3 , 4 , 5 , 6 , 7 ]. However, the power supply for WSNs/IoT is still dominated by conventional electrochemical batteries, whose periodic replacement inevitably brings great environmental problems and maintenance challenges, whereas the low-power feature of these devices also provides great feasibility in taking advantage of ambient mechanical energy to sustainably power these systems.…”

Section: Introductionmentioning

confidence: 99%

Multidirectional Piezoelectric Vibration Energy Harvester Based on Cam Rotor Mechanism

et al. 2023

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The techniques that harvest mechanical energy from low-frequency, multidirectional environmental vibrations have been considered a promising strategy to implement a sustainable power source for wireless sensor networks and the Internet of Things. However, the obvious inconsistency in the output voltage and operating frequency among different directions may bring a hindrance to energy management. To address this issue, this paper reports a cam-rotor-based approach for a multidirectional piezoelectric vibration energy harvester. The cam rotor can transform vertical excitation into a reciprocating circular motion, producing a dynamic centrifugal acceleration to excite the piezoelectric beam. The same beam group is utilized when harvesting vertical and horizontal vibrations. Therefore, the proposed harvester reveals similar characterization in its resonant frequency and output voltage at different working directions. The structure design and modeling, device prototyping and experimental validation are conducted. The results show that the proposed harvester can produce a peak voltage of up to 42.4 V under a 0.2 g acceleration with a favorable power of 0.52 mW, and the resonant frequency for each operating direction is stable at around 3.7 Hz. Practical applications in lighting up LEDs and powering a WSN system demonstrate the promising potential of the proposed approach in capturing energy from ambient vibrations to construct self-powered engineering systems for structural health monitoring, environmental measuring, etc.

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“…In the following phase called free phase, the harvester deflects back because of the restoring force provided by both the spring and fixed surfaces of the unimorphs. In order to avoid physical damage to the PZTs, the maximum allowed deflection (δ max ) is 1 mm (Yin et al 2023) and the allowed safety factor (SF) is > 2 (Wu and Xu 2019). While conducting the experiments, these conditions were implemented by keeping the protrusion of the hollow steel structure just 1 mm above the casing.…”

Section: Introductionmentioning

confidence: 99%

Analytical model of z-piezoelectric energy harvester for power generation from human physical activities

Sirigireddy,

Eladi

2023

Phys. Scr.

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Human physical activities, viz., walking, jogging, jumping, etc. on piezoelectric energy harvesters (PEH) have a great potential for the generation of free and clean energy. In the present work, an analytical model is developed to study the performance of a z-PEH, and the results were validated with numerical and experimental results. The distinctive features of the z-PEH are (a) it can be installed in a very small pavement/road surface area, (b) it results in very less damage to the road during installation, and (c) the repair and maintenance works can be carried out relatively easily. The power generation of the harvester can be enormously increased by increasing the number of unimorphs in the vertical (z) direction without increasing in the surface (x-y) directions, hence termed z-PEH. The harvester studied has four unimorphs. Each unimorph has a PZT-5A plate and an Aluminum substrate. The analytical and numerical studies resulted in a harvester with optimum dimensions for the PZT plate and Aluminum substrate of 20 × 20 × 0.4 mm3 and 65.1 × 20 × 1 mm3 respectively. Experiments were carried out on the optimum structure. The z-PEH, for an input deflection of 1 mm generated a maximum power of 0.84 mW, 0.88 mW and 0.80 mW from the proposed analytical model, numerical work and experiments respectively. The percentage of error between analytical and numerical results is 4.55% and between analytical and experimental results is 4.76%. An average human can generate a force of 490 N while walking, thereby allowing the use of 88 unimorphs in the z-PEH. The DC power generated from the harvester using the analytical model is 18.39 mW and the power density is 10.09 W/m3.

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A Pavement Piezoelectric Energy Harvester for Small Input Displacements

Cited by 4 publications

References 27 publications

Design and experimental investigation of a positive feedback magnetic-coupled piezoelectric energy harvester

Design and experimental investigation of a positive feedback magnetic-coupled piezoelectric energy harvester

Multidirectional Piezoelectric Vibration Energy Harvester Based on Cam Rotor Mechanism

Analytical model of z-piezoelectric energy harvester for power generation from human physical activities

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