Low power adaptive power management with energy aware interface for wireless sensor nodes powered using piezoelectric energy harvesting
Low power adaptive power management with energy aware interface for wireless sensor nodes powered using piezoelectric energy harvesting
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DOI：
10.1109/icsens.2015.7370663
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发表时间：
2015-11
期刊：
影响因子：
--
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
已经提出并实现了一种无电池电源管理电路，该电路结合了用于由压电能量收集器（PEH）供电的无线传感器节点（WSN）的能量感知接口（EAI）。传统电源管理通常需要两个 DC-DC 转换器，每个转换器都用于最大功率点跟踪 (MPPT) 和电压调节功能。所提出的电路仅需要一个 DC-DC 转换器即可实现 MPPT 和电压调节。 EAI 还提供了一种电压调节方法。这使得电路具有更高的效率，因为能量传输不必经过两个阶段才能到达负载。连接到所提议电路的 PEH 在各种振动条件下进行了测试。在大多数测试条件下，该电路的端到端效率约为 66%。
A batteryless power management circuit incorporating an energy aware interface (EAI) for wireless sensor nodes (WSNs) powered by piezoelectric energy harvester (PEH) has been proposed and implemented. Traditional power management usually requires two DC-DC converters, each for maximum power point tracking (MPPT) and voltage regulation functionalities. The proposed circuit requires only one DC-DC converter for both the MPPT and voltage regulation. The EAI also provides a means to voltage regulation. This allows the circuit to have higher efficiency as the energy transfer does not have to go through two stages to reach the load. A PEH connected to the proposed circuit was tested under various vibration conditions. The circuit was found to have end-to-end efficiency of about 66% under most of the test conditions.