这些节点可以从地面的振动测量出车辆的速度和方向。
They were able to measure the speed and direction of vehicles from ground vibrations.
仿真结果表明，空台正弦扫描试验仿真得到的台面各节点加速度幅值与试验结果比较接近，所建立的模型可用于试件振动台试验仿真。
The results indicate that the simulation results are close to the experimental ones that the modal can be used for simulation of vibration test with attached structural members on it.
本文介绍了实现在线振动检测和分析的无线传感器节点的超低功耗硬件设计。
The paper introduces the ultralow-power hardware design of wireless sensor nodes for online oscillation signal detection and analysis.
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