期刊
NANO ENERGY
卷 38, 期 -, 页码 185-192出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2017.05.018
关键词
Triboelectric nanogenerator; Electromagnetic generator; Wireless sensor; Self-powered; Train monitoring
类别
资金
- National Natural Science Foundation of China [51602265]
- Scientific and Technological Projects for Distinguished Young Scholars of Sichuan Province [2015JQ0013]
- China Postdoctoral Science Foundation [2016M592692]
- Fundamental Research Funds for the Central Universities of China [A0920502051619-72]
- Independent Research Project of State Key Laboratory of Traction Power [2017TPL_Z04, 2016TPL_Z03]
With the rapid development of high speed railway all around the world, the real-time monitoring is absolutely necessary for the safety running of high speed train. However, traditional monitoring method requires external power supply, and wired system makes the monitoring messy. Here, we reported a self-powered wireless smart sensor, powered by vibration energy of trains via a maglev porous nanogenerator (MPNG) when the train is running. Integrated MPNG including a triboelectric nanogenerator (TENG), which delivers a peak power density of 0.34 mW/g at 50 M Omega, and an electromagnetic generator (EMG), which delivers a peak power density of 0.12 mW/g at 700 Omega. Through a power management circuit (PMC), the MPNG is proved to power 400 commercial light-emitting diodes (LEDs). What's more, various supercapacitors and Li-ion battery can be charged by MPNG arrays, where the supercapacitor of 0.1 F can be charged from 0 V to 3 V in approximately 350 s. A wireless smart sensor can be sustainably powered by MPNG arrays, transmitting real-time data to a cellphone, demonstrating the capability for Internet of Things, especially in the train monitoring system.
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