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Hybrid Micropower Source for Wireless Sensor Network

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4 Author(s)
Li, Yanqiu ; Beijing Inst. of Technol., Beijing ; Hongyun Yu ; Bo Su ; Yonghong Shang

Wireless sensor networks have become a very significant enabling technology in many applications and the use of environmental energy is a feasible source for low-power wireless sensor networks. The challenges of developing a power supply including generation or conversion, storage, and power management are manifold to extend the lifetime of a wireless sensor network. The objective of this research is to develop an intelligent hybrid power system to realize a self-sustaining wireless sensor node. The photovoltaic and thermoelectric generators are adopted as energy converters. The lithium ion battery and ultracapacitor are used as reservoirs. An intelligent power management system has been developed to control the power distribution. The design data and experimental results show that the hybrid micropower source can extend the lifetime of a sensor network.

Published in:

Sensors Journal, IEEE  (Volume:8 ,  Issue: 6 )