适用于工业物联网应用的磁电能采集:带有增强性能的调频转换器
Slim Naifar1,2, Olfa Kanoun3
1Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax, University of Sfax, Sfax 3038, Tunisia.
Sensors (Basel, Switzerland)
|November 13, 2025
概括
本研究介绍了一种可调节的磁电能收获器,用于工业应用. 它有效地将振动转化为电力,克服可靠的无线传感器网络的频率不匹配.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 机械工程 机械工程
背景情况:
- 工业物联网 (IIoT) 需要无线传感器网络的可持续电力.
- 由于可靠性和维护问题,电池更换是IIoT的一个主要挑战.
- 环境工业振动往往与收割机共振频率不匹配,限制了能源收获效率.
研究的目的:
- 为IIoT应用开发一个可调节频率的磁电 (ME) 能源收获器.
- 为了应对工业振动和收割机共振之间的频率不匹配的挑战.
- 在可变振动环境中增强输出功率和操作可靠性.
主要方法:
- 在一个可调节的磁电路内,在悬臂梁上使用了Terfenol-D/PMNT/Terfenol-D三明治传感器.
- 通过空隙调整实现了取决于位置的磁力操纵,用于连续调节频率.
- 开发了一个理论框架,包括位置依赖的磁力.
- 研究多壁碳纳米管 (MWCNT) 增强的环氧结合层 (2重量%) 提高了功率.
主要成果:
- 通过1毫米的空气间隙调节,实现了62.5%的频率调节范围 (40Hz至65Hz).
- 通过使用MWCNT增强的环氧结合,证明了六倍的功率提高.
- 与两个磁铁配置相比,通过四磁铁电路设计获得了输出功率的十倍增加 (高达2mW).
结论:
- 拟议的频率调节ME能量收割器有效地解决了IIoT振动环境中的频率不匹配问题.
- 位置依赖的磁力操纵和MWCNT增强的环氧显著提高了收割机的性能.
- 开发的系统为IIoT无线传感器网络提供了可持续和可靠的电源解决方案.
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