This picture shows the frequency-domain results (0 ~ 300Hz) for x, y, and z 3-axis from sensor node on water pump. Raw data are logged for 30 seconds with a sensor node. Gateway receives raw data through RF protocol and process it with FFT.
圖示為經過 FFT 轉換的三軸結果 (0~300Hz). Sensor node 收集 30 秒的三軸震動加速度資料, 並傳回 gateway 進行分析運算.
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