This paper describes a low frequency driven electromagnetic energy harvester (EMEH) which consists of a thin flame resistant (FR-4) planar spring, NdFeB permanent magnets, and a copper coil. The FR-4 spring was fabricated using a desk computer numerical control (CNC) 3D modeling machine. Mathematical modeling and ANSYS finite element analysis (FEA) were used totheoretically investigate the mechanical properties of the spring mass system. The proposed EMEH generates a maximum power of 65.33 at a resonance frequency of 8 Hz with an acceleration of 0.2 g (1 g = 9.8 ) and a superior normalized power density (NPD) of 77 .
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机译：本文介绍了一种低频驱动的电磁能量收集器（EMEH），它由薄的阻燃（FR-4）平面弹簧，NdFeB永磁体和铜线圈组成。 FR-4弹簧是使用台式计算机数控（CNC）3D建模机制造的。通过数学建模和ANSYS有限元分析（FEA）理论研究了弹簧质量系统的力学性能。所提出的EMEH在8 Hz的共振频率下产生的最大功率为65.33，加速度为0.2 g（1 g = 9.8），且归一化功率密度（NPD）为77。
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