Solar micro-power system for self-powered wireless sensor nodes

Yongtai He; Yangqiu Li; Lihui Liu; Lei Wang

doi:10.1117/12.810134

12 January 2009 Solar micro-power system for self-powered wireless sensor nodes

Yongtai He, Yangqiu Li, Lihui Liu, Lei Wang

Proceedings Volume 7133, Fifth International Symposium on Instrumentation Science and Technology; 71333Z (2009) https://doi.org/10.1117/12.810134
Event: International Symposium on Instrumentation Science and Technology, 2008, Shenyang, China

Abstract

In self-powered wireless sensor nodes, the efficiency for environmental energy harvesting, storage and management determines the lifetime and environmental adaptability of the sensor nodes. However, the method of improving output efficiency for traditional photovoltaic power generation is not suitable for a solar micro-power system due to the special requirements for its application. This paper presents a solar micro-power system designed for a solar self-powered wireless sensor node. The Maximum Power Point Tracking (MPPT) of solar cells and energy storage are realized by the hybrid energy storage structure and "window" control. Meanwhile, the mathematical model of energy harvesting, storing and management is formulated. In the novel system, the output conversion efficiency of solar cells is 12%.

Citation Download Citation

Yongtai He, Yangqiu Li, Lihui Liu, and Lei Wang "Solar micro-power system for self-powered wireless sensor nodes", Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71333Z (12 January 2009); https://doi.org/10.1117/12.810134

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