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首页> 外文期刊>Industrial Informatics, IEEE Transactions on >Strain Energy Harvesting Powered Wireless Sensor System Using Adaptive and Energy-Aware Interface for Enhanced Performance
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Strain Energy Harvesting Powered Wireless Sensor System Using Adaptive and Energy-Aware Interface for Enhanced Performance

机译：使用自适应和能量感知接口的应变能采集供电无线传感器系统，可增强性能

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摘要

This paper presents a wireless sensor system (WSS) powered by a strain energy harvester (SEH) through the introduction of an adaptive and energy-aware interface (EAI) for enhanced performance under variable vibration conditions. The interface is realized by an adaptive power management module for maximum power transfer under different loading conditions and an EAI, which manages the energy flow from the storage capacitor to the WSS for dealing with the mismatch between energy demanded and energy harvested. The focus is to realize high harvested power and high efficiency of the system under variable vibration conditions, and an aircraft wing structure is taken as a study scenario. The SEH powered WSS was tested under different peak-to-peak strain loadings from 300 to 600 με and vibrational frequencies from 2 to 10 Hz to verify the system performance on energy generation and distribution, system efficiency, and capability of powering a custom-developed WSS. Comparative studies of using different circuit configurations with and without the interface were also performed to verify the advantages of the introduced interface. Experimental results showed that under the applied loading of 600 με at 10 Hz, the SEH generates 0.5 mW of power without the interface while having around 670% increase to 3.38 mW with the interface, which highlights the value of the interface. The implemented system has an overall efficiency of 70 to 80%, a long active time of more than 1 s, and duty cycle of up to 11.85% for vibration measurement under all the tested conditions.
机译：本文通过引入自适应和能量感知接口（EAI）提出了一种由应变能采集器（SEH）驱动的无线传感器系统（WSS），以增强在可变振动条件下的性能。该接口由自适应功率管理模块（用于在不同负载条件下实现最大功率传输）和EAI来实现，该模块管理从存储电容器到WSS的能量流，以处理所需能量与收集的能量之间的不匹配。重点是在可变振动条件下实现系统的高采集功率和高效率，并且以机翼结构为研究场景。 SEH供电的WSS在300至600με的不同峰峰值载荷和2至10 Hz的振动频率下进行了测试，以验证系统在能量产生和分配，系统效率以及为定制开发设备供电方面的性能WSS。还进行了使用带有和不带有接口的不同电路配置的比较研究，以验证引入接口的优点。实验结果表明，在施加10 Hz的600με负载的情况下，SEH在没有界面的情况下产生0.5 mW的功率，而在界面处则增加了约670％，达到3.38 mW，这突出了界面的价值。所实施的系统在所有测试条件下的振动测量均具有70至80％的整体效率，超过1 s的长时间激活时间以及高达11.85％的占空比。

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