摘要
针对GMM/PZT磁电复合单元将电磁波能量转化为电能时,其输出电能不足以直接驱动无线传感器的问题,设计了基于开关电容网络的电源管理电路,对其充放电特性进行了理论与实验分析。结果表明,该电路可以对电路中储能电容充电积累能量,当能量积累到一定程度,电容瞬间放电为无线传感器工作供电。
The GMM / PZT magnetoelectric composite can harvest electromagnetic energy. As the output power of the GMM / PZT magnetoelectric composite is not sufficient for the wireless sensor＇s power requirement, a power management circuit based on switched-capacitor network is designed. The charge and discharge characteristics of the power management circuit are analyzed and experimented. The results show that this circuit can charge storage capacitors, when the electric energy accumulates to a certain level, the storage capacitors will discharge to drive the wireless sensor instantly.
出处
《传感技术学报》
CAS
CSCD
北大核心
2008年第8期1427-1431,共5页
Chinese Journal of Sensors and Actuators
基金
国家863计划项目资助(2006AA04Z337
2007AA12Z132)
国家自然科学基金资助(60774055
10776039)
