Vibration harvesting in traffic tunnels to power wireless sensor nodes

Wischke, Martin; Masur, Michael; Kröner, Michael; Woias, Peter

doi:10.1088/0964-1726/20/8/085014

Cited by 113 publications

(59 citation statements)

References 21 publications

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“…Additionally different brass weights have been used to cross correlate the effect of different moments of inertia. The electro motor used in the former study [1] was replaced by a compressed air motor MRD 38-1460 from Mannesmann-Demag (Figure 2 right). This motor was used to circumvent the pickup of magnetic stray fields formerly observed from the experiments with the electro motor.…”

Section: Design Concept and Experimental Setupmentioning

confidence: 99%

“…In previous publications we have shown that a wireless sensor node mounted to a railroad track can be powered by vibrations of a passing train [1]. Applications for this systems lie in the field of structural health monitoring in tunnels, but also other applications are feasible and useful, such as train position or passage detection, or wheel health monitoring of the passing train [1].…”

Section: Introductionmentioning

confidence: 99%

“…Applications for this systems lie in the field of structural health monitoring in tunnels, but also other applications are feasible and useful, such as train position or passage detection, or wheel health monitoring of the passing train [1]. In continuation of this research we have presented a contactless energy harvester tailored for the energy autonomous train passage detection [2].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of a variable reluctance harvester

Kroener¹,

Moll²,

Ravindran³

et al. 2014

J. Phys.: Conf. Ser.

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Abstract. In our last year's PowerMEMS contribution we presented a proof-of-concept of a variable reluctance harvester for the application in a railroad surveillance system. It was shown that intermittently closing a magnetic circuit could supply power output in the range of mW's. The test setup used showed unwanted energy pickup from the electro motor used. In this paper we present thorough measurements of the reluctance circuit with a compressed air motor to exclude the effects of the above mentioned magnetic stray fields. The effects of eddy currents and moment of inertia on the output power, the optimal coil position on the stators, and effects of different magnetic field strengths are studied. The gap width is set to a fixed value of 14 mm, representing a realistic scenario.

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Section: Design Concept and Experimental Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of a variable reluctance harvester

Kroener¹,

Moll²,

Ravindran³

et al. 2014

J. Phys.: Conf. Ser.

Self Cite

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show abstract

“…Mainly two mechanisms are used to convert this mechanical energy to electrical one which are piezoelectric [1][2][3] and electromagnetic principles [4,5].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Vibration Energy Harvesting for Railway Applications

et al. 2018

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Abstract. Safe localization of trains via GPS and wireless sensors is essential for railway traffic supervision. Especially for freight trains and because normally no power source is available on the wagons, special solutions for energy supply have to be developed based on energy harvesting techniques. Since vibration is available in this case, it provides an interesting source of energy. Nevertheless, in order to have an efficient design of the harvesting system, the existing vibration needs to be investigated. In this paper, we focus on the characterization of vibration parameters in railway application. We propose an electromagnetic vibration converter especially developed to this application. Vibration profiles from a train traveling between two German cities were measured using a data acquisition system installed on the train's wagon. Results show that the measured profiles present multiple frequency signals in the range of 10 to 50 Hz and an acceleration of up to 2 g. A prototype for a vibration converter is designed taking into account the real vibration parameters, robustness and integrability requirements. It is based on a moving coil attached to a mechanical spring. For the experimental emulation of the train vibrations, a shaker is used as an external artificial vibration source controlled by a laser sensor in feedback. A maximum voltage of 1.7 V peak to peak which corresponds to a maximum of 10 mW output power where the applied excitation frequency is close to the resonant frequency of the converter which corresponds to 27 Hz.

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“…[3][4][5] Comparing to energy harvesting for large-scale alternative energy generation using wind turbines and solar cells is mature technology, the development of energy harvesting technology by using piezoelectric devices on a scale appropriate for small, low-power, embedded wireless sensing systems is still in its developmental stage, particularly for application of structural health monitoring sensing system. 6 Wischke et al 7 have investigated the feasibility of harvesting energy from traffic-induced vibrations in railway and road tunnels to power embedded structure health monitoring sensors. They concluded that the trafficinduced vibrations at any location in the road tunnel and at the wall in the railway tunnel are too small for useful vibration harvesting by using the cantileverbased piezoelectric generator.…”

Section: Introductionmentioning

confidence: 99%

Energy harvesting for powering wireless sensor networks in low-frequency and large-force environments

Jiang

Wang

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part C:

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Over the past few decades, wireless sensor networks have been widely used in the field of structure health monitoring of civil, mechanical, and aerospace systems. Currently, most wireless sensor networks are battery powered and it is costly and unsustainable for maintenance because of the requirement for frequent battery replacements. As an attempt to address such issue, this paper theoretically and experimentally studies a compression-based piezoelectric energy harvester, which is suitable for the low-frequency and large-force working environments, such as in civil and transportation infrastructure applications. The proposed energy harvester employs the piezoelectric structure constructed in multilayer stack configuration to convert ambient vibrations into electrical energy. Based on the linear theory of piezoelectricity, the two-degree-of-freedom electromechanical models of the proposed energy harvester were developed to characterize its performance in generating electrical energy under external excitations. Exact closed-form expressions of the electromechanical models have been derived to analyze the maximum harvested power and the optimal resistance. The theoretical analyses were validated through several experiments for a test prototype under harmonic excitations. The test results exhibit very good agreement with the analytical analyses and numerical simulations for a range of resistive loads and input excitation levels.

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Vibration harvesting in traffic tunnels to power wireless sensor nodes

Cited by 113 publications

References 21 publications

Characterization of a variable reluctance harvester

Characterization of a variable reluctance harvester

Electromagnetic Vibration Energy Harvesting for Railway Applications

Energy harvesting for powering wireless sensor networks in low-frequency and large-force environments

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