Variable load resistance by using CdS analog linear optical coupler for automated measurement of capacitive energy harvester
Variable load resistance by using CdS analog linear optical coupler for automated measurement of capacitive energy harvester
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DOI：
10.1016/j.sna.2020.112399
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发表时间：
2021-03-07
影响因子：
4.6
通讯作者：
Maenaka, Kazusuke
中科院分区：
文献类型：
--
作者：
Fujita, Takayuki;Fujibe, Kohei;Maenaka, Kazusuke
在这项工作中，我们演示了一种负载电阻测量系统，该系统旨在使用CdS模拟线性光耦合器作为可变电阻，实现振动型电容能量采集器的自动化。CdS可变电阻器具有非极性、低于皮ofarad的极低寄生电容和宽可变电阻范围内的高允许电压。通过控制CdS模拟耦合器的LED驱动电流，在0.4 μ a / s电压下获得10 MS2 ~ 100 kS2的可变电阻范围。6 ?驱动电流结果表明，该电阻在满量程下重现性好，误差小于3%。文中还详细介绍了CdS耦合器的特性，以及利用Arduino单片机对压电式MEMS振动能量采集器进行自动测量的结果。？ 2020 Elsevier B.V.版权所有
In this work, we demonstrate a load resistance measurement system aimed at automating a vibration type capacitive energy harvester using a CdS analog linear optical coupler as a variable resistor. The CdS variable resistor exhibits non-polar, very low parasitic capacitance below picofarad and high allowable voltage over a wide range of variable resistance. By controlling a LED driving current of the CdS analog coupler, variable resistance range of 10 MS2 to 100 kS2 was obtained by 0.4 ?A?6 ?A driving current. The results show that the resistance is reproducible at full scale with a low error rate of less than ?3%. The detailed characteristics of the CdS coupler and the automated measurement results of the piezoelectric MEMS vibration energy harvester by using Arduino microcontroller are also described. ? 2020 Elsevier B.V. All rights reserved.