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Zero-crossing detector for a piezoelectric energy harvester

机译:压电能量采集器的过零检测器

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摘要

Energy harvesting is a method that extracts electrical energy from the environment. This paper presents an integrated circuit in 0.35-μm CMOS that harvests energy from mechanical vibration using a piezoelectric transducer. The circuit applies a bias-flip rectifier to improve the efficiency of the energy extraction. The paper focuses on the design of the key element of the bias-flip rectifier, the zero-crossing detector. It detects the zero crossing of the input current from the piezoelectric transducer and generates the control signals for the bias-flip rectifier. Post-layout simulations show a very low power consumption and high efficiency of the harvester.
机译:能量收集是一种从环境中提取电能的方法。本文介绍了一种采用0.35-μmCMOS的集成电路,该集成电路使用压电换能器从机械振动中收集能量。该电路应用了偏置翻转整流器,以提高能量提取的效率。本文着重于偏置翻转整流器的关键元件,过零检测器的设计。它检测来自压电换能器的输入电流的零交叉,并生成用于偏置翻转整流器的控制信号。布局后的仿真显示收割机的功耗非常低,效率很高。

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