The Design Of Wireless Independent Monitoring System For Regional Rainfall Type Landslide

China is a country with multiple geological disasters and landslide disaster occupies the majority proportion in many geological disasters.The landslide caused by rain seriously threatens the safety of life and property of our people.Because of the slope is often in remote areas,the landslide monitoring equipment can be monitored in the field for a long time.The research time of landslide disaster in China is not long.There are many problems with existing instruments.For the above questions,based on the existing research results,this paper further studies the landslide monitoring.A landslide monitoring system is developed which can realize the automatic collection and early warning.A data processing method for slope Angle of landslide is presented.The main work of this paper is as follows:Firstly,a landslide monitoring system is designed for the demand of slope monitoring.Design a cquisition terminal node based on various sensors which can collect rainfall data,fracture displacement data,groundwater level data and Oblique angle data.The wireless transmission network based on Zig Bee and GSM realizes remote stable data transmission.Based on STM32 MCU acquisition station and acquisition terminal node hardware design.Secondly,this paper presents a method for the slope attitude acquisition based on the two-axis accelerometer.In this paper,the attitude model of landslide body is established.The displacement and tilt angle are calculated by acceleration sensor data,and then we can calculate all of the displacement and tilt angle.Finally,the data fusion method is used to fit the data of all the end points on the same sliding surface.The fitting value can be considered as sliding angle and sliding displacement.This method is used to improve the monitoring precision of tilt Angle.The landslide monitoring system designed in this paper can realize independent monitoring of foreign minister's time and the parameters of the landslide can be accurately collected.The calculation model of slope angle and displacement proposed in this paper can provide acceleration sensor data to push the internal posture of the landslide body.The method of data fusion at the end node of tilt angle acquisition can improve the accuracy of tilt angle monitoring by 0.1 degree,thus the monitoring precision of deep displacement is improved effectively.