A hybridized electromagnetic-triboelectric self-powered sensor for traffic monitoring: concept, modelling, and optimization

被引:82
|
作者
Askari, Hassan [1 ]
Asadi, Ehsan [1 ]
Saadatnia, Zia [2 ]
Khajepour, Amir [1 ]
Khamesee, Mir Behrad [1 ]
Zu, Jean [2 ]
机构
[1] Univ Waterloo, Dept Mech & Mechatron Engn, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada
[2] Univ Toronto, Dept Mech & Ind Engn, Nano Generators & Nano Engn Lab, Toronto, ON M5S 3G8, Canada
关键词
Hybridized nano generator; Electromagnetism; Triboelectricity; Speed bumper; Traffic monitoring; ENERGY HARVESTER; NANOGENERATOR; VIBRATION; DESIGN; GENERATOR; RECOVERY;
D O I
10.1016/j.nanoen.2016.12.024
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report a hybridized electromagnetic-triboelectric generator that consists of four units of freestanding triboelectric nano generators (TENG) and four electromagnetic generators (EMG) that can be used as a self-powered sensor for road traffic monitoring. The proposed hybridized nano generator converts the periodical mechanical load over the speed bumper into electricity. We optimize the geometry of the electromagnetic component for the purpose of high power generation. With combination of TENG and EMG, it is shown that the proposed device is capable of the power and voltage generation even with very small displacements and low frequencies. Depending to the triggering frequency, TENG or EMG dominates the power generation considering different mechanical loads. The hybridized nanogenerator can deliver output volume power density of 20.96 W/m(3) and 50.81 W/m(3) for TENG and EMG components in frequency of 1 Hz, respectively. The proposed nano generator not only has the potential to be implemented for sensing applications and traffic monitoring due to its high output voltage, but also is capable of power harvesting to act as a self-powered monitoring system. With the global interest toward developing smart cities, the proposed self-powered device can address the traffic monitoring challenges of those cities by providing online traffic information.
引用
收藏
页码:105 / 116
页数:12
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