摘要
为了优化压电能量收集器的性能以解决植入式传感器的自供电问题,设计了一种双耳悬臂梁的压电结构并提出了一种高效的自供电并联同步开关电感(ESPP-SSHI)电路。通过模型建立和ANSYS及MULTISIM的仿真实验,验证了压电结构的合理性及接口电路性能的可靠性。结果显示:压电结构的一阶固有频率从84.653 Hz降到了59.962 Hz,谐振时开路电压达3.75 V,电路的输出功率为0.97 mW,是并联同步电感(P-SSHI)电路的2.63倍,压电结构的整体功率密度为1.2 mW/cm^(3).
In order to solve the self-power problem of implantable sensor by optimizing the performance of the piezoelectric energy harvest,a piezoelectric structure of biauricular cantilever beam was designed,and an efficient self-powered parallel synchronous switching inductor(ESPP-SSHI)circuit was proposed.The rationality of piezoelectric structure and reliability of interface circuit performance were verified by modeling and a lot of simulation experiments.The results show that the first resonance frequency of the piezoelectric structure reduced from 84.653 Hz to 59.962 Hz,and the open circuit voltage reaches 3.75 V at resonance,the output power of the circuit is 0.97 mW,which is 2.63 times the output of than the synchronous inductance(P-SSHI)circuit,Finally,the overall power density of the piezoelectric structure is 1.2 mW/cm^(3).
作者
邢永红
董增寿
宁少慧
XING Yong-hong;DONG Zeng-shou;NING Shao-hui(College of Electronic Information Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;College of mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《太原科技大学学报》
2023年第3期200-205,212,共7页
Journal of Taiyuan University of Science and Technology
基金
山西省自科学基金(201901D111239)
太原科技大学博士科研基金(20182010)。
关键词
压电
能量收集
并联同步开关电感(P-SSHI)
悬臂梁
自供电
piezoelectric
energy harvesting
parallel synchronized switch harvesting on inductor(P-SSHI)
cantilever beam
self-powered
