Self-powered communicating wireless sensor with flexible aero-piezoelectric energy harvester

Scornec, Julien Le; Guiffard, Benoît; Séveno, Raynald; Cam, Vincent Le; Ginestar, Stéphane

doi:10.1016/j.renene.2021.11.113

Cited by 30 publications

(8 citation statements)

References 40 publications

(30 reference statements)

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“…To further evaluate the performance of the energy harvesters, the peak RMS output power for each energy harvester was examined with different load resistances under an excitation acceleration of 0.3 g, as shown in figure 15. Considering the energy harvester as a current source, the theoretical RMS power output generated by the energy harvester across the connected resistance can be calculated using equations ( 4)-( 6) [57]. According to the experimental results, the PEH with a fixed proof mass has the lowest output power compared to the other two PEHs.…”

Section: Power Outputmentioning

confidence: 99%

Numerical and experimental investigation of an auxetic piezoelectric energy harvester with frequency self-tuning capability

Zhang,

Chen,

Karimi

et al. 2024

Smart Mater. Struct.

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To deal with the limited availability of long-lasting power sources for sensor nodes in industrial environments, a novel piezoelectric energy harvester with high efficiency and a wide working bandwidth was designed to harvest broadband and random vibrations from the ambient environment. The developed energy harvester adopts a doubly clamped piezoelectric beam with a peanut-shaped auxetic structure to improve the power output. It also incorporates a sliding proof mass for frequency self-tuning, enabling a wider working bandwidth. As the doubly clamped beam exhibits geometry nonlinearity under large vibration amplitudes, the power output of the energy harvester can be further enhanced in the frequency self-tuning process. Finite element simulations are conducted to evaluate the impact of the auxetic structure and the position of the proof mass on the performance of the energy harvester. Experiments are performed to examine the energy harvesting performance of the proposed energy harvester. Under an excitation acceleration of 0.3 g, the use of the sliding proof mass widens the working bandwidth of the auxetic energy harvester (AEH) by 9 Hz, with the maximum RMS output power of AEH reaching 18.78 μW, which is much higher than that of the plain energy harvester (PEH) or the AEH with a fixed proof mass. The developed energy harvester can successfully power a wireless temperature and humidity sensor node based on the vibration produced by a centrifuge, which demonstrates the practical feasibility of the proposed energy harvester for industrial applications.

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Section: Power Outputmentioning

confidence: 99%

Numerical and experimental investigation of an auxetic piezoelectric energy harvester with frequency self-tuning capability

Zhang,

Chen,

Karimi

et al. 2024

Smart Mater. Struct.

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“…The harvested energy was then stored in a capacitor and used to provide continuous energy for the microprocessor and RF pulse transmitter. Scornec et al [128] proposed a piezoelectric airflow energy harvester with a maximum power output of 60 μW at a wind speed of 6.3 m/s. Experimental results showed that four generators connected in parallel could fully charge a capacitor (capacitance of 1.2 mF) in 1 hour.…”

Section: B Hardware Issuesmentioning

confidence: 99%

Recent Advancements in IoT Implementation for Environmental, Safety, and Production Monitoring in Underground Mines

Zhang

Karimi

et al. 2023

IEEE Internet Things J.

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Internet of Things (IoT) technology has been widely used for real-time monitoring of the environment, safety and production in underground mines. This paper presents the basic structure of a Mine Internet of Things (MIoT) system based on a widely used three-layer IoT architecture, classifies types of sensors commonly used in underground mines by specific application, and introduces available wired and wireless communication technologies and network topologies that can be applied in underground mines. This paper provides a comprehensive review of recent developments in IoT applications in underground mines to monitor various environmental parameters, including mine gas and dust concentrations, temperature, humidity and airflow, groundwater, ground support and seismic activity. MIoT applications for fire and hazard detection, personnel and equipment positioning, and production safety management have also been investigated. This paper highlights key challenges for the broad application of IoT technology in underground mines such as operation disruption, additional investment, limited battery life, poor quality of underground communication, and difficulty in data management. Further research on novel advanced techniques, such as selfpowered sensors, MIoT standardization and underground wireless communication technologies, is essential to improve the applicability and effectiveness of IoT applications in underground mines.

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“…Nowadays, the Internet of things and especially their potential applications in the human-machine interface (HMI) have motivated the development of miniaturization in flexible and wearable electronics. In flexible electronics, several branches have seen considerable development, such as wearable sensors, , synthetic/electronic skin, , and energy harvesting/storage devices. − …”

Section: Introductionmentioning

confidence: 99%

Large Curvature Sensors Based on Flexoelectric Effect in PEDOT:PSS Polymer Films

Le Scornec,

Guiffard

2023

ACS Materials Lett.

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This paper presents the flexoelectric effect in semiconducting polymeric blend (poly(3,4-ethylene dioxythiophene): polystyrene sulfonate (PEDOT:PSS)) films. Flexoelectricity can be considered as an alternative transduction mechanism to the piezoelectricity to directly detect curvature. It is simply defined as the coupling between the strain gradient and polarization in solid dielectrics and semiconductors. In this study, flexoelectricity in PEDOT:PSS films works on the basis of electrical energy generation induced by dynamic bending. Of particular interest is the phenomenon of polarity change during bending, i.e., the reversal of the polarization direction. In this paper, the procedure to obtain free-standing PEDOT:PSS polymer films for mechanical/electrical bending conversion based on the flexoelectric effect is presented. Here, we report the flexoelectric characterization of 30-μm-thick flexible films of PEDOT:PSS encapsulated between two polyethylene terephthalate (PET) sheets. This characterization reveals a much higher transverse flexoelectric coefficient than those recently reported in the literature for free-standing PEDOT:PSS films with a coefficient that reaches 76 μC/m at 0.5 Hz. It was also demonstrated that it was possible to determine the curvature of the sample up to 62 m −1 through signal acquisition of the current and thus the possibility of using the encapsulated PEDOT:PSS films as a large curvature sensor. Their efficiency in converting a strain gradient into electrical energy, combined with their robustness and flexibility, may open a promising route toward organic semiconductors-based curvature sensors and ambient mechanical energy harvesting devices with large effective flexoelectric coefficients.

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Self-powered communicating wireless sensor with flexible aero-piezoelectric energy harvester

Cited by 30 publications

References 40 publications

Numerical and experimental investigation of an auxetic piezoelectric energy harvester with frequency self-tuning capability

Numerical and experimental investigation of an auxetic piezoelectric energy harvester with frequency self-tuning capability

Recent Advancements in IoT Implementation for Environmental, Safety, and Production Monitoring in Underground Mines

Large Curvature Sensors Based on Flexoelectric Effect in PEDOT:PSS Polymer Films

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