磁歪振動発電によるドア動作型電池レス温湿度無線センサとその実装評価試験

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  • Door Operation Type Battery-less Temperature and Humidity Wireless Sensor using Magnetostrictive Vibrational Power Generator and Its Mounting Evaluation Test
  • ジワイ シンドウ ハツデン ニ ヨル ドア ドウサガタ デンチ レスオン シツド ムセン センサ ト ソノ ジッソウ ヒョウカ シケン

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<p>　In this paper, is proposed a battery-less wireless sensor to generate power at door operation and to transmit temperature and humidity information. The power generation device is a U-shaped 1 mm thick iron frame with 8 × 1 × 32 mm3 Fe-Ga alloy laminated and coil wound, and a mechanism to generate free vibration by the movement of door using the desorption of permanent magnet attached to the frame tip. By attaching a capacitor which cancels the inductive reactance of the coil to the voltage doubler rectifier circuit, the storage energy over 3 mJ sufficient for the operation of wireless module (920M Hz) was generated in the capacitor of 220 μF, and it succeeded in transmitting temperature and humidity data in 1 time operation. In addition, the system was mounted on the door of clean rooms, and it succeeded in carrying out the transmission and reception without the lack of the data, when the monitoring test for 2 weeks was carried out.</p>

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