Threshold Voltage Control to Improve Energy Utilization Efficiency of a Power Management Circuit for Energy Harvesting Applications
Threshold Voltage Control to Improve Energy Utilization Efficiency of a Power Management Circuit for Energy Harvesting Applications
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DOI：
10.3390/proceedings2131052
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发表时间：
2018-11
期刊：
影响因子：
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通讯作者：
Z. Chew;M. Zhu
中科院分区：
文献类型：
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作者：
Z. Chew;M. Zhu
这项工作提出了一种改进能量收集应用的电源管理电路（PMC）的设计方法，以便无线传感器节点（wsn）可以利用更多收集的能量来执行有用的任务。该方法通过在电路的能量流控制接口处设置合适的阈值电压，广泛适用于不同的电路。实验结果表明，当阈值电压差约为20 mV时，PMC输出的能量相差可达5%以上。这种差异在很长一段时间内是显著的，因为WSN可以用额外的能量执行更多的任务。
This work presents a design approach that improves power management circuit (PMC) for energy harvesting applications so that more of the harvested energy can be utilized by the wireless sensor nodes (WSNs) to perform useful tasks. The proposed method is widely applicable to different circuits by setting an appropriate threshold voltage at the energy flow control interface of the circuit. Experimental results show that with a threshold voltage difference of around 20 mV, the energy output from the PMC can differ by more than 5%. This difference is significant over a long period of time as more tasks can be performed by the WSN with the extra energy.