A Vibration Energy Harvester With Targeted Frequency-Tuning Capability

Li, Yunjia; Zhou, Chenyuan; Wang, Xinyi; Wang, Junyuan; Qiao, Dayong; Tao, Kai

doi:10.1109/tim.2022.3175984

Cited by 8 publications

(2 citation statements)

References 21 publications

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“…However, ambient energy frequency can vary considerably, demanding the adjustment of the resonant frequency to ensure a reliable energy supply. There are various approaches in the literature to achieve this, including manual mechanical tuning [79], mechanical self-tuning [80], and electronic self-tuning [81]. Another solution is to design the device to resonate at multiple frequencies, thereby expanding its frequency response spectrum.…”

Section: Vibration-based Eh (Veh)mentioning

confidence: 99%

Energy-Sustainable IoT Connectivity: Vision, Technological Enablers, Challenges, and Future Directions

López,

Rosabal,

Ruiz-Guirola

et al. 2023

IEEE Open J. Commun. Soc.

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Technology solutions must effectively balance economic growth, social equity, and environmental integrity to achieve a sustainable society. Notably, although the Internet of Things (IoT) paradigm constitutes a key sustainability enabler, critical issues such as the increasing maintenance operations, energy consumption, and manufacturing/disposal of IoT devices have long-term negative economic, societal, and environmental impacts and must be efficiently addressed. This calls for self-sustainable IoT ecosystems requiring minimal external resources and intervention, effectively utilizing renewable energy sources, and recycling materials whenever possible, thus encompassing energy sustainability. In this work, we focus on energy-sustainable IoT during the operation phase, although our discussions sometimes extend to other sustainability aspects and IoT lifecycle phases. Specifically, we provide a fresh look at energysustainable IoT and identify energy provision, transfer, and energy efficiency as the three main energyrelated processes whose harmonious coexistence pushes toward realizing self-sustainable IoT systems. Their main related technologies, recent advances, challenges, and research directions are also discussed. Moreover, we overview relevant performance metrics to assess the energy-sustainability potential of a certain technique, technology, device, or network, together with target values for the next generation of wireless systems, and discuss protocol, integration, and implementation issues. Overall, this paper offers insights that are valuable for advancing sustainability goals for present and future generations.

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Section: Vibration-based Eh (Veh)mentioning

confidence: 99%

Energy-Sustainable IoT Connectivity: Vision, Technological Enablers, Challenges, and Future Directions

López,

Rosabal,

Ruiz-Guirola

et al. 2023

IEEE Open J. Commun. Soc.

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“…Mechanical modulation is often used to modulate the mechanical resonance frequency in inductive vibration power generation [9]. However, such a mechanical method is often incompatible with the miniaturization of power generation elements.…”

Section: Introductionmentioning

confidence: 99%

Resonant Frequency Modulation in Inductive Vibration Power Generator via Resistive Impedance Control

Yajima

2024

IEEE Trans. Power Electron.

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Resonant frequency modulation is indispensable for vibration power generators using inductive coils to maintain maximum power extraction against environmental fluctuation. We have shown that, by inserting a fixed reactance element in series with an inductive vibration power generator, its resonant frequency can be modulated only by controlling resistive impedance of the power extraction circuit. The upper limit of the frequency modulation only by resistive impedance was analytically shown and verified by simulation and experiments. For the purpose of comparison between different devices, the figures of merit for electrical frequency modulation capability were also proposed, which are applicable both to resistive impedance control and to complex impedance control. The figure of merit can predict whether the specific harvester device is suitable for electrical frequency modulation or requires mechanical modulation, and the prediction was verified by experiments with two types of harvester devices. The resonant frequency modulation only by changing resistive impedance is more practical than the previously reported methods via complex impedance variation, and readily implemented by power extraction circuits with simple switching operation.

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Realization of multi-functional features with ZnO nanosheets/p-Si based electronic device for energy harvesting and memristive switching

2024

Memories - Materials, Devices, Circuits and Systems

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A Vibration Energy Harvester With Targeted Frequency-Tuning Capability

Cited by 8 publications

References 21 publications

Energy-Sustainable IoT Connectivity: Vision, Technological Enablers, Challenges, and Future Directions

Energy-Sustainable IoT Connectivity: Vision, Technological Enablers, Challenges, and Future Directions

Resonant Frequency Modulation in Inductive Vibration Power Generator via Resistive Impedance Control

Realization of multi-functional features with ZnO nanosheets/p-Si based electronic device for energy harvesting and memristive switching

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