【摘要】 介绍了一种适用于振动测试的传感器网络节点,通过该节点搭建的传感器网络可以检测材料是否存在缺陷。该节点的硬件电路以cyclone III系列FPGA为核心,包括3维振动信号调理采集单元、1个外部SD卡存储器、1个2.4 G频段的无线收发单元1、个传感器单元和USB-SPI电路以实现无线、有线两种传输方式。实验结果表明设计系统是可行且有效的,将会为MEMS技术应用于振动检测领域奠定基础。更多还原

【Abstract】 This paper introduced a kind of sensor network node suitable for vibration testing.The sensor network which set up by the nodes can detect material defects.The nodes in the hardware circuit took Cyclone III series FPGA as the core,including 3D vibration signal disposal acquisition module,SD card memory,2.4 GHz wireless transceiver module,a sensor unit and USB-SPI circuit to realize the wireless and cable two kinds of transmission.Experimental results show that this system is feasible and effective,and can be used for vibration detection.更多还原