一种新型磁电自供电无线传感器供能电路研究  

Study on new power-supply circuit of magnetoelectric self-powered wireless sensor

作　　者：贾朝波[1] 李平[1] 文玉梅[1] 李兴圣[1] 

机构地区：[1]重庆大学光电工程学院光电技术及系统教育部重点实验室,重庆400044

出　　处：《传感器与微系统》2010年第3期55-58,共4页Transducer and Microsystem Technologies

基　　金：国家"863"计划资助项目(2006AA04Z337;2007AA12Z132);国家自然科学基金资助项目(50830202;60774055;10776039)

摘　　要：采用矩形杆式磁电复合换能器的双发电单元作为主发电源和辅助发电源,设计了一种电能瞬间放电电路。该电路能够将换能器主发电源采集的能量存储并瞬间释放,提高储能电容的输出功率,而辅助发电源则用来驱动管理电路控制放电电路工作。实验结果表明:当储能电容器中的电能积累到一定程度,管理电路控制电能瞬间放电电路放电,驱动无线传感器工作。An magneto-electric energy converter of rectangular flat-plate has two magnetoelectric composite elements which can be used as masterslave power generator, a novel instantaneous discharging circuit is designed to increase the super capacitance output power. The master magnetoelectric composite elements can harvest electromagnetic energy and storage to super capacitance, and then discharge instantly to increase the output power through the proposed circuit, the slave power gonerator is used tO drive management circuit and control discharging circuit work. The experimental results show that when the electric energy accumulates to a certain level, the storage capacitors will discharge and drive the wireless sensor to work, which controlled by the power management circuit.

关 键 词：自供能 超级电容器 瞬间放电电路 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]