永久磁石ウレタンエラストマーの形状が誘導起電力に及ぼす影響

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  • Influence of Permanent Magnet Urethane Elastomer Shape on Induced Electromotive Force

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<p>　The permanent magnet urethane elastomer is a highly deformable permanent magnet, which is expected to realize a battery-free wireless sensor. In the present study, the effect of the shape of the permanent magnet urethane elastomer on the induced electromotive force was investigated. The results show that shaping the material suppresses radial expansion, and adding grooves (45-degree grooves) led to a higher induced electromotive force. Additionally, it was revealed that the induced electromotive force is generated in opposite intensity simultaneously in the upper and lower parts of the sample during compression deformation. These results imply that adjusting the coil's position and roll direction can optimize the induced electromotive force. Finally, we successfully conducted wireless transmission of temperature data using a Bluetooth Low Energy module when the permanent magnet urethane elastomer is utilized as a power source for vibration power generation.</p>

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