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为了对山体表层土壤位移监测,采用三轴加速度传感器MMA8452和Zig Bee无线网络设计实现无线滑坡位移监测系统。设计采用CC2530实现Zig Bee网络,Zig Bee各终端设备(End-Device)所测得的加速度信号发送到协调器(Coordinator),数据再由协调器送至PC端进行数据分析和处理,将加速度数据转换为位移,从而实现对滑坡位移的检测。实验结果表明该系统对位移的检测误差小于2%,可以很好的完成位移的监测,并且能够通过预设阀值的方法对山体滑坡等自然灾害进行预警。
In order to monitor the displacement of the mountain surface soil, the wireless landslide displacement monitoring system is implemented by the three-axis acceleration sensor MMA8452 and Zig Bee wireless network design. The CC2530 is designed to realize the Zig Bee network. The acceleration signal measured by each end device of Zig Bee is sent to the coordinator. The data is sent to the PC for data analysis and processing by the coordinator. The acceleration data Converted to displacement, in order to achieve the detection of landslide displacement. The experimental results show that the detection error of the system is less than 2%, which can well monitor the displacement and pre-alarm natural disasters such as landslides by means of the preset threshold.