悬臂梁式压电发电机自主控制快速充电电路设计  

Design of Self-control and Rapid-charged Circuit for Cantilever Piezoelectric Generator

作　　者：廖海洋[1,2] 林树靖[1,2] 温志渝[1,2] 

机构地区：[1]重庆大学新型微纳器件与系统技术国家重点学科实验室,重庆400044 [2]重庆大学微系统研究中心,重庆400044

出　　处：《压电与声光》2012年第2期314-317,共4页Piezoelectrics & Acoustooptics

基　　金：高等学校科技创新工程重大项目基金资助项目(708072);国家自然科学基金资助项目(61076106)

摘　　要：针对悬臂梁式压电发电机为储能电路充电速度慢的问题,提出了一种自主控制快速充电思想。通过分析悬臂梁式压电发电机以超级电容器为负载时的输出特性,采用MATLAB/Simulink仿真得出超级电容器充电最快的时段,设计出以微功耗单片机ATmega168为控制核心的自主控制快速充电电路。实验证明,该电路充电储能比传统的快3倍以上,实现了微型发电机应用中快速充电和自主控制功能,满足了连续振动中微功耗电子器件、传感器及间歇式大功耗电路的要求。A new idea of self-control and rapid-charged circuit used in the cantilever piezoelectric generator has been proposed aiming at resolving the problem that the current power storage circuit is charged slowly.Through analyzing the output characteristics of the cantilever piezoelectric generator using the super-capacitor as the load and by using MATLAB/Simulink simulation tool to obtain the fastest charged time stage of the super-capacitor,a new self-control and rapid-charged circuit with a micro-power control core ATmega168 has been designed.The experimental results show that the circuit is 3 times faster than the circuit which using the traditional charging method.The rapid-charged and self-control functions for the micro-generator can be achieved by using the proposed circuit.It can be used to supply energy to low-power consumption devices,sensors and high instantaneous power consumption circuit in the environment of mechanical vibration.

关 键 词：快速充电电路 自主控制 压电发电机 超级电容器 

分 类 号：TM910.2[电气工程—电力电子与电力传动]