Design of a Wireless Sensor Powered by a Piezoelectric Energy Harvester

Milani, Damiano; Bassetti, M.; Braghin, Francesco; Tomasini, Gisella Marita

doi:10.1115/esda2014-20583

Cited by 6 publications

(2 citation statements)

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“…The sensorial node has to be set on the axle-box of the vehicle. It consists of one or more sensors (digital accelerometers, temperature sensors, etc), a micro-controller, wireless transmission system (MiWi) and re-chargeable battery [1,26]. Generally, for these applications, the monitored phenomena are very slow (as, for example, the crack propagation and the wear) and they do not require continuous monitoring.…”

Section: Introductionmentioning

confidence: 99%

A centimetre-scale bi-directional wind turbine for energy harvesting applications: design and experimental tests

Tomasini

Tarsitano

Giappino

2019

Smart Mater. Struct.

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In this work, new cm-scale wind turbines for powering sensor nodes devoted to monitoring/diagnostic of railway vehicles are designed, built and tested in a wind tunnel. Two rotors, having four airfoil blades with a diameter of 3 and 4 cm, are designed following the blade element momentum-based approach. The two rotors, tested in a wind tunnel, reach a power coefficient (without considering the losses in the conditioning circuit) ranging between 20% and 30%, in line with the maximum values of the Schmitz theory; the correspondence between the numerical estimates and the experimental data is discrete. The 4 cm diameter rotor, once connected to a conditioning circuit, reaches a maximum net efficiency of about 15%, equal to the maximum value found in the literature, but with a 13,5 cm diameter rotor. Considering the practical application on trains and the fact that the rotor has to work for two opposite velocity directions (it must be bi-directional), a 4 cm diameter symmetrical rotor with a constant blade pitch and flat plate blade section is also built. With the symmetric rotor, we can observe that the generated power is about 50% lower than that produced by the same rotor with airfoil blades. Finally, the turbine is set inside a duct to protect it and increase performance. The tests performed on this ducted turbine (4 cm diameter, symmetric) allow us to understand that the duct significantly increases the performance of the rotor in downwind conditions, from 1% to 6%, while it is almost irrelevant in upwind conditions. Moreover, the diffuser increases the efficiency by about 20%, while the contraction cone does not significantly modify the performance of the turbine.

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Section: Introductionmentioning

confidence: 99%

A centimetre-scale bi-directional wind turbine for energy harvesting applications: design and experimental tests

Tomasini

Tarsitano

Giappino

2019

Smart Mater. Struct.

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“…Moure et al designed an energy harvesting device with piezoelectric ceramics[44]. Milani et al designed a wireless sensor powered by a piezoelectric energy harvester[45]. Roshani et al evaluated the performance of the piezoelectric energy harvester in asphalt pavement…”

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confidence: 99%

The State of the Art: Application of Green Technology in Sustainable Pavement

Sun

Lü

Cheng

et al. 2018

Advances in Materials Science and Engineering

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A wide range of literature on predominant green technologies for sustainable pavements is summarized in this paper. It covers two major aspects: energy harvesting technologies and permeable pavement systems. Fundamental mechanics of energy harvesting techniques and possible designs of energy harvesters are described, with the evaluation of energy conversion efficiency, and advantages and disadvantages. In addition, the designs of permeable pavement systems are discussed, along with their advantages and disadvantages. The latest technical innovations are highlighted. It is found that green technologies are promising for developing more sustainable pavements. Application issues are also pointed out, including construction challenges, durability, and life-cycle cost-benefit assessment. Future research directions are suggested to address practical challenges, such as efficient design, construction challenge, timely maintenance, and life-cycle performance assessment.

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