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首页> 外文期刊>Journal of intelligent material systems and structures >Experimental study on self-powered synchronized switch harvesting on inductor circuits for multiple piezoelectric plates in acoustic energy harvesting
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Experimental study on self-powered synchronized switch harvesting on inductor circuits for multiple piezoelectric plates in acoustic energy harvesting

机译：声能采集中多个压电板感应电路自供电同步开关采集的实验研究

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摘要

Self-powering mechanisms for synchronized switch harvesting on inductor circuits have been experimentally investigated to harvest low-frequency acoustic energy (approximate to 200Hz) using multiple lead zirconate titanate piezoelectric plates placed inside a quarter-wavelength straight-tube resonator. Unlike conventional synchronized switch harvesting on inductor circuits, the self-powered synchronized switch harvesting on inductor circuits can perform alternating current/direct current conversion without externally powered switch controllers, which is beneficial in real applications. In the acoustic energy harvester, the nonuniform driving force to piezoelectric plates generates the asynchronous charging effect in piezoelectric internal capacitances. Due to more energy dissipative components in the self-powered synchronized switch harvesting on inductor circuits, there exists a critical voltage above which the self-powered synchronized switch harvesting on inductor circuits outperform the standard circuit. With the incident sound pressure level of 112dB at the frequency of 196Hz, the output power of self-powered series-synchronized switch harvesting on inductor using three piezoelectric plates is measured as 0.796mW. This is 13.2% higher than the standard circuit.
机译：已经通过实验研究了用于感应器电路上同步开关收集的自供电机制，以使用置于四分之一波长直管谐振器中的多片钛酸锆钛酸铅压电板来收集低频声能（约200Hz）。与电感电路上的常规同步开关采集不同，电感电路上的自供电同步开关采集无需外部供电的开关控制器即可执行交流/直流转换，这在实际应用中非常有用。在声能收集器中，对压电板的不均匀驱动力会在压电内部电容中产生异步充电效应。由于电感器电路上的自供电同步开关采集中有更多的耗能组件，因此存在一个临界电压，高于该临界电压时，电感器电路上的自供电同步开关采集性能将超过标准电路。在196Hz的频率下，在112dB的入射声压级下，使用三个压电板在电感器上采集的自供电串联同步开关的输出功率测得为0.796mW。这比标准电路高13.2％。

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