基于Zigbee技术的土木工程支撑结构振动损伤监测方法

Vibration Damage Monitoring Method of Civil Engineering Support Structure Based on Zigbee Technology

传统的土木工程支撑结构振动损伤监测方法对振动信号的修正不足,导致监测准确度偏低。因此,基于Zigbee技术设计了新的监测方法。首先采用Zigbee网络架构实现传感器之间的通信,同时,使用振动传递率模型修正传感器获得的振动信号,然后根据结构位移响函数理论推导信号振幅,判断振幅是否存在异常。最后分析异常振幅在多自由度下的振动情况,从而判断支撑结构是否出现损伤。实验结果显示,上述监测方法可以有效实现对土木工程支撑结构的损伤监测,且监测准确度较高。

The traditional civil engineering support structure vibration damage monitoring method doesn't correct the vibration signal,resulting in low monitoring accuracy.Therefore,a new method for monitoring vibration damage of civil engineering support structures was designed based on Zigbee technology.The Zigbee network architecture is preferred to implement communication between sensors.At the same time,the vibration transfer rate model is used to correct the vibration signal obtained by the sensor,and then the signal amplitude is derived according to the structure displacement response function theory to determine whether the amplitude is abnormal.Finally,analyze the vibration of the abnormal amplitude under multiple degrees of freedom to determine whether the supporting structure is damaged.The experimental results show that the above-mentioned monitoring method can effectively realize the damage monitoring of the civil engineering support structure,and the monitoring accuracy is high.