Self-powered autonomous wireless sensor node using vibration energy harvesting

Torah, Russel; Glynne‐Jones, Peter; Tudor, John; O’Donnell, Terence; Roy, Saibal; Beeby, Steve

doi:10.1088/0957-0233/19/12/125202

Cited by 225 publications

(125 citation statements)

References 14 publications

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“…In particular, vibration-based energy harvesting techniques were developed based on various different transduction mechanisms, e.g. electromagnetic induction [4][5][6], piezoelectricity [7][8][9][10], electrostatic generation [11] dielectric elastomers [12] and so on. Many vibration-based energy harvesting devices are essentially micro or small resonant structures (e.g.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on self-powered vibration control and monitoring system using electromagnetic TMD and wireless sensors

Shen

Zhu

2012

Sensors and Actuators A: Physical

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This paper proposed and validated a self-powered vibration control and monitoring (SVCM) system which consists of a pendulum-type tuned mass damper (TMD), a rotary electromagnetic (EM) device, an energy harvesting circuit (EHC) and a wireless smart sensor (WSS). As the key element in the system, the regenerative electromagnetic TMD (EMTMD) is able to convert vibration energy of structures to electrical energy, and thus plays dual functions, namely, vibration mitigation and energy harvesting. With the aid of EHC, the electrical energy can be further stored and used to power WSS that closely monitor structural vibration responses. The feasibility of the proposed SVCM system was validated via shaking table tests, in which a single-degree-of-freedom (SDOF) structural model equipped with the SVCM system was tested under random excitations. The functionality of the SVCM system was discussed with regard to the vibration control, energy harvesting and vibration monitoring performance. The experimental results revealed that the proposed regenerative EMTMD device can provide regenerative and economical power to WSS. The harvested power reaches about 312.4 mW under random ground motions with root-mean-square (RMS) acceleration equal to 0.05g. Meanwhile, the comparison shows that the peak magnitude of the frequency response function of structural displacement is reduced by 10 dB with the aid of the EMTMD. This study demonstrates that the SVCM system provides a novel and promising solution to the power supply problem associated with wireless sensing technology, and will stimulate the integration of vibration control and monitoring system.

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Section: Introductionmentioning

confidence: 99%

An experimental study on self-powered vibration control and monitoring system using electromagnetic TMD and wireless sensors

Shen

Zhu

2012

Sensors and Actuators A: Physical

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“…Additionally, electromagnetic conversion was presented in Refs. [11,12]. Electromagnetic harvesters loose not only efficiency with shrinking dimensions, they require a relative large movement of a magnet to a coil, or vice versa, too.…”

Section: Energy Harvesting In Flowing Mediamentioning

confidence: 99%

Power Source for Wireless Sensors in Pipes

Keddis¹,

Schwesinger²

2016

JCEA

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Abstract:In this paper, we present investigations on energy harvesters for wireless sensors inside pipes. The harvesters are of flexible piezoelectric PVDF (Poly-Vinylidene-Di-Fluoride) and aluminum-foils as electrodes. The layers were stacked alternating on each other and wound to a spool. An LDPE (low-density polyethylene)-film wraps the spool and prevents the inflow of liquids. A ring shaped bluff body was placed inside the pipe to induce turbulence in the fluid stream. As the harvesters have been arranged downstream of the bluff body, they were forced to oscillate independent of the media. This led to a polarization and a separation of electrical charges. Experiments were carried out in a wind channel as well as in a water pipe. In air, the spool oscillates with a frequency of about 30 Hz, at a wind speed of about 7 m/s. A voltage of about 4 V (peak-peak) was measured. This delivers in case of impedance adjustment power values of about 0.54 µW. In water, oscillation starts at a speed above 0.6 m/s. The average oscillation frequency is about 18 Hz. At a velocity of 0.74 m/s, a peak-peak-voltage up to about 2.3 V was found. In case of impedance adjustment, the power was about 0.33 µW. This power is stored in a capacitor. Assuming a data transmission unit consumes about 0.2 mWs during one operational period of 1 s, the duty cycle can be calculated to about 6.2 min for air harvesting and 10.1 min for harvesting in water.

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“…Although attaching additional vibrationinduced energy harvesting components to a car may be feasible, a more elegant solution is by exploiting the use of the available components on the car. In road cars, the vibration from engine blocks [9,10], wheel rotation [11] and vehicle suspension [12] have all been proposed to generate energy. However, to the best of the authors' knowledge, limited attention has been given to exploiting the rear spoilers or wings on cars for energy harvesting.…”

Section: Introductionmentioning

confidence: 99%

Fluid-structure interaction analysis of rear spoiler vibration for energy harvesting potential

Rasani¹,

Aldlemy

Harun³

2017

J. MECH. ENG. SCI.

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Increasing environmental and energy concerns constitutes an encouraging development of future automobiles and autonomous vehicles that utilize cleaner and renewable energy. Although primarily an aerodynamic device, car rear spoilers experience various vibrations and limited attention has been given to exploiting these vibrations for generating alternative energy. This paper aims to investigate the potential of using the flow-induced vibration of rear spoilers on automobiles for energy harvesting. To that end, a fluid-structure interaction analysis of an inverted NACA 2408 spoiler behind an Ahmed body was undertaken. An Arbitrary Lagrangian-Eulerian flow solver was coupled to a non-linear structural dynamic solver using a commercial software application. The vibrations of the rear spoiler placed at 0, 50 and 100 mm below the top face of the Ahmed body under Reynolds number Re = 2.7 × 10 6 were simulated. It was found that the vibration of the rear spoiler at the highest elevation showed the largest amplitudes and strain, but the vibration of the rear spoiler at the lowest elevation offers an extended period of vibration before reaching a steady state. With the rear spoiler positioned at the highest elevation, a vibration frequency of 70 Hz and a steady-state principal strain of 350  may be achieved. These vibration levels compared well with previous investigation to sufficiently charge storage capacitors for wireless transmitters. The rear spoiler vibration may offer potential means for energy harvesting, and warrants further experiments under actual driving conditions.

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Self-powered autonomous wireless sensor node using vibration energy harvesting

Cited by 225 publications

References 14 publications

An experimental study on self-powered vibration control and monitoring system using electromagnetic TMD and wireless sensors

An experimental study on self-powered vibration control and monitoring system using electromagnetic TMD and wireless sensors

Power Source for Wireless Sensors in Pipes

Fluid-structure interaction analysis of rear spoiler vibration for energy harvesting potential

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