ABSTRACT Piezoelectric energy harvesting is one of the promising energy sources for wireless sensor networks and integrated devices. One way to enhance the efficiency of energy harvesting is through the electrical impedance matching. In piezoelectric energy harvesting system, the electrical impedance matching can increase the output voltage and energy from the generated electrical energy to the harvesting circuit. In this paper, the electrical impedance matching technologies for energy harvesting circuit to transfer the accumulated electrical energy to various output loads, including conventional electrolytic capacitors, supercapacitors and rechargeable Ni MH batteries, were intensively investigated to obtain maximum output energy. The harvested power through AC-DC rectifier circuit was used to light the LED lamp, which provides a prospect application in wireless sensor networks and portable devices.

中文翻译：

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用于能量收集应用的基于压电陶瓷的电阻抗匹配

摘要 压电能量收集是用于无线传感器网络和集成设备的有前途的能源之一。提高能量收集效率的一种方法是通过电阻抗匹配。在压电能量收集系统中，电阻抗匹配可以增加从产生的电能到收集电路的输出电压和能量。在本文中，能量收集电路的电阻抗匹配技术将累积的电能传输到各种输出负载，包括常规电解电容器、超级电容器和可充电镍氢电池，以获得最大输出能量。通过 AC-DC 整流电路收集的电力用于点亮 LED 灯，