微型传感器节点通常采用能量有限的电池供电,电池的使用寿命限制了传感器节点的寿命.针对传感器网络的特征和需求,设计了光伏微能源系统,并与微型传感器节点集成,形成自供电的微系统.光伏微能源系统主要包括光伏电池、聚合物锂电池和能源管理子系统.本文阐述了光伏微能源系统的设计,并对微系统的实验测试结果进行了分析.实验结果证明,光伏微能源系统能够自行补充能量,延长传感器网络的使用寿命.
Sustainable operation of the sensor nodes powered by limited lifetime batteries is a key challenge.To solve this problem,a micro photovoltaic system was fulfilled and integrated with the sensor node to develop an autonomous self-powered micro system.The micro photovoltaic system contains solar cells,Lithium polymer battery and energy management subsystem.This paper presents the design,performance test and analysis of the micro system.Experimental results demonstrate the micro photovoltaic system can continually self-replenish its energy consumption and extend the lifetime of sensor network.
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