摘要
采用无线传感器节点的环境电磁波能量获取关键技术,设计了一种可行的供电方案。通过对所处环境的频谱能量分析和采用合适的天线及转换电路,收集到足够能量驱动节点工作。同时设计了带有唤醒机制的低功耗电源管理电路,以适应节点在环境电磁波能量较少地区的工作。通过获取能量稳定性、有效工作范围和传感器节点的性能相关测试和分析,验证了方案的有效性和可行性。
A new method of providing energy for wireless sensor node is developed by harvesting ambient electromagnetic energy like AM signals.Enough energy is harvested to drive the sensor node by doing the spectrum energy analysis of the location,and utilizing proper antenna and converting circuit.This paper also presents a low-power energy management circuit with wake-up mechanism,which renders the sensor node to work in a place with small amounts of electromagnetic energy.Besides,experiments and analysis about this energy-providing method＇s working stability and territory is conducted to evaluate its feasibility.
出处
《电子科技》
2011年第6期97-100,共4页
Electronic Science and Technology
关键词
环境电磁波
无线传感器节点
能源获取
电源管理
ambient electromagnetic energy
wireless sensor node
energy get
energy management
