传感技术学报2016，Vol.29Issue(3)：349-355,7.DOI:10.3969/j.issn.1004-1699.2016.03.008
自供电的同步电荷提取电路的优化设计
Optimized Design of Self-Powered Synchronous Charge Extraction Circuit
摘要
Abstract
It is an effective method to convert the mechanical energy from environment vibration into electric energy by utilizing the piezoelectric effect of piezoelectric element. Effectively extracting the accumulated charges from the surface of the piezoelectric element is the key for energy harvesting system. Hence,it is especially important to de⁃sign high efficient charge extraction circuit. This paper presents a self-powered optimized synchronous charge ex⁃traction circuit(SP-OSCE). Two passive peak detector circuits including positive and negative peak detectors are employed to detect the extreme vibration displacement and extract energy at the extreme vibration displacement. The proposed circuit employs the component reuse method for the rectifier circuit and extrema detection circuit so that the traditional rectifier bridge structure is avoided. The circuit not only extracts the charges in clamped capaci⁃tance but also collects the charges in detection capacitance so that the energy conversion efficiency is improved. Multisim based simulation results show the efficiency and advantages compared with the published results. Further, the physical experiment is carried out and the experimental tests verify the simulation results.关键词
能量俘获/压电元件/接口电路/自供电/实验验证Key words
energy harvesting/piezoelectric element/interface circuit/self-powered/experimental test分类
信息技术与安全科学引用本文复制引用
屈凤霞,夏银水,施阁,叶益迭,寇彦宏..自供电的同步电荷提取电路的优化设计[J].传感技术学报,2016,29(3):349-355,7.基金项目
国家自然科学基金项目（61131001，61401243）；宁波市创新团队项目（C01280114302）；浙江省自然科学基金项目（LQ15F010002）；浙江省新苗人才计划项目 （）
