基于双互感等值电压的地下位移三维测量远程监测系统

A remote monitoring system for three-dimensional measurement of underground displacement based on double mutual inductance contour voltage

目的:对滑坡进行实时监测,极大限度地减少或防止滑坡灾害导致的人员伤亡及经济损失。方法:采用电磁互感原理,将位移变化转化为电压变化,基于分段线性和拉格朗日插值法建立了地下位移测量模型,同时结合物联网技术,将测量数据实时发送至物联网平台,基于物联网平台设计了远程监测界面。结果:实验结果表明,当水平位移和垂直位移在0~50 mm的测量范围内,最大测量误差不会超过1 mm。结论:实现了一种高自动化、高精度的地下位移三维测量远程监测系统,能够满足滑坡地下位移监测的需求。

Aims:The real-time monitoring of landslides can greatly reduce or prevent from human casualties and economic losses caused by landslide disasters.Methods:The principle of electromagnetic mutual inductance was adopted to convert displacement change into voltage change.An underground displacement measurement model was established based on the piecewise linear and Lagrange interpolation method.Combined with the Internet of things technology,the measurement data was sent to the Internet of things platform in real time;and a remote monitoring interface was designed based on the Internet of things platform.Results:The experimental results showed that when the horizontal displacement and the vertical displacement were within the measurement range of 0~50 mm,the maximum measurement error would not exceed 1 mm.Conclusions:A highly automated and accurate remote monitoring system for three-dimensional measurement of underground displacement is realized,which can meet the requirements of the underground displacement monitoring of landslides.