摩擦発電エネルギハーベスタにより駆動するバッテリーレスタイヤ圧力モニタリングシステム

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  • Batteryless Tire Pressure Monitoring System Driven by Triboelectric Energy Harvester

説明

<p>Tire pressure monitoring system (TPMS) has been brought into the regulatory frameworks of many countries in the automotive market. However, a life of battery in commercial TPMSs must limited because of some safety risks and environmental problems. It is noted that energy harvesting approaches are promising to realize a batteryless TPMS. In this study, we developed a triboelectric energy harvester for mounting inside a tire to power a TPMS. The developed harvester can generate the output power more than 1 mW under the load resistance of 10 MΩ at the tire rotational speed of 50 km/h and the load force of 2kN. The 4.4 mF capacitors can be saturated at 3.5 V during approximately 70 s. Additionally, a commercial TPMS can be effectively powered by this harvester when it works.</p>

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