20000G shock energy harvesters for gun-fired munition

Willemin, J.; Boisseau, S.; Olmos, L.; Gallardo, Mirialys; Despesse, Ghislain; Robert, T F Ah King

doi:10.1088/1742-6596/773/1/012084

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…The translation movement of the cart imposed by the user leads to the rotation of the central magnet followed by oscillations, which are converted into electricity thanks to the coil. We already proved the high benefit of converting impulsive mechanical energy sources into oscillations in [10] to increase the output energy density of energy harvesters and typically shock energy harvesters. An equivalent concept leading to the same conclusions is developed here for autonomous switches.…”

Section: Energy Harvester and Operation Modementioning

confidence: 99%

“…While electromagnetic converters have been used since the beginning of the energy harvesting era, they still offer great opportunities for innovations and optimizations. For example at the system scale, such as in water flow energy harvesting [8,9], high-G shock energy harvesting [10], electrodynamic wireless power transmission [11,12], biomechanical energy harvesting [13,14], or vibration energy harvesting [15,16]. But also at the material scale, for example with the use of injection molded magnets to optimize the shapes, the performances and the ecological footprints of electromagnetic converters thanks to magnet recycling opportunities [17,18].…”

Section: Introductionmentioning

confidence: 99%

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An autonomous switch based on a rotating magnet driven by magnetic launchers

Boisseau¹,

Tosoni²,

Delette³

et al. 2021

Smart Mater. Struct.

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This paper reports on an innovative electromagnetic energy harvester for autonomous switches relying on a rotating magnet driven by magnetic launchers, and combined with a ferromagnetic circuit and a coil to turn the variation of magnetic flux induced by the rotating magnet into electricity. The device is able to operate on forward and backward translation movements. The energy harvester has been modeled, optimized, manufactured, characterized and integrated into a mechanical actuation system to form a complete autonomous switch that will be commercially available. The experimental output energy reaches 1.235 mJ (350 µJ cm−3) which is among the highest output energies and energy densities reached on autonomous switches in the state of the art. The electromechanical conversion efficiency is 56%, which is excellent for an energy harvester, and obtained thanks to the topology chosen for the electromagnetic converter. The energy harvester is finally connected to a diode-bridge-capacitor circuit to supply the RF emission of the commands with a Zigbee Green Power® transmitter.

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Section: Energy Harvester and Operation Modementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An autonomous switch based on a rotating magnet driven by magnetic launchers

Boisseau¹,

Tosoni²,

Delette³

et al. 2021

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…The voltage induced by an electromagnetic harvester is proportional to the time rate of change of the magnetic field flux (dB/dt) through a coil with a determined number of turns (N ), a determined area (A) and a specific angle (α) between the coil area and the magnetic field flux. Electromagnetic harvesters have been extensively analyzed to convert rotational motion and vibrations into electric energy [34], but this technology has been also studied to convert both linear motion [35] and impacts [36]- [39] into electric energy. • Electrostatic: The electrostatic harvesters' principle of operation is based on the variable capacitor concept [40].…”

Section: B Mechanical Energy Harvesting Technologiesmentioning

confidence: 99%

Mechanical Energy Harvesting Taxonomy for Industrial Environments: Application to the Railway Industry

Diez

Gabilondo

Alarcón

et al. 2020

IEEE Trans. Intell. Transport. Syst.

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Traditional industry is experiencing a worldwide evolution with Industry 4.0. Wireless sensor networks (WSNs) have a main role in this evolution as an essential part of data acquisition. The way in which WSNs are powered is one of the main challenges to face if Industry wants to achieve the digital transformation. Energy harvesting technologies are one of the possible solutions to this challenge. The main purpose of this paper is to present a novel method to taxonomize knowledge in the field of mechanical energy harvesting to enhance the use of energy harvesting technologies in industrial applications. The methodology is based on the analysis of key parameters and performance metrics for existing technologies. The taxonomy is applied to rail axles in order to select the energy harvesting technology that is more appropriate for this specific location, demonstrating the potential of mechanical energy harvesting technologies (MEHTs) for the railway industry, as a use case of industrial environment. Additionally, the taxonomy allows to identify upcoming challenges for research purposes while analyzing the compatibility among mechanical energy harvesting technologies in order to create hybrid harvesters.

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20000G shock energy harvesters for gun-fired munition

Cited by 2 publications

References 7 publications

An autonomous switch based on a rotating magnet driven by magnetic launchers

An autonomous switch based on a rotating magnet driven by magnetic launchers

Mechanical Energy Harvesting Taxonomy for Industrial Environments: Application to the Railway Industry

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