CN102163363B - Landslide real-time monitoring and early warning system - Google Patents

The invention discloses a landslide real-time monitoring and warning system. The system comprises a main control node and a plurality of sensor nodes; each sensor node comprises a global positioning system (GPS) module, a vibration trigger module, a micro electro mechanical system (MEMS) accelerometer, a memory, an advanced reduced instruction-set computer (RISC) machine (ARM) processor, a wireless transmission module and a power supply module; the main control node consists of a GPS module, a wireless transmission module, a memory, an ARM processor and an alarm; the sensor nodes acquire mountain deformation parameters through the GPS modules, acquire an instantaneous abnormal underground vibration signal through the MEMS accelerometer, and send data to the main control node through the wireless transmission modules; the main control node receives the mountain deformation parameters and the instantaneous abnormal vibration data of the sensor nodes through the wireless transmission modules, comprehensively analyzes the mountain deformation parameters and the instantaneous abnormal vibration data, and sends landslide warning information to the alarm. The system can be used for monitoring the state of a mountain in real time and timely detecting premonition of landslides and has the advantages of flexible deployment and convenience for use.

Technical field

The present invention relates to the Geological Hazards Monitoring field, especially a kind of landslide real-time monitoring and early warning system.

Background technology

The geologic hazards such as recent domestic earthquake, landslide, rubble flow take place frequently, especially in China, and owing to the excessive exploitation to resource, the physical environment severe exacerbation, various geologic hazards have caused very big prestige evil to the people's life, property safety.In addition, the broken destructive disaster such as along with the continuous construction of the infrastructure such as large hydropower station, reservoir, highway, railway engineering, come down, breach a dyke, subside is also having a strong impact on use safety and the life-span of these infrastructure.According to incompletely statistics; China is annual to come down, rubble flow, tens thousand of of the various geologic hazards such as subside; that can make early warning before disaster occurs is less than 1/10th; how these geologic hazards are monitored and early warning; conscientiously the protection people's safety of life and property is the current important topic that faces of China.

Usually all be action by government to monitoring and the early warning of geologic hazards such as coming down, subside at present, need to mobilize a large amount of human and material resources, utilize large-scale, expensive instrument and equipment to monitor.Main monitoring method has: Macroscopic Anomalies observation method (such as animal anomaly, the aobvious displacement in Temin, earth's surface, earth subsidence, ground cleave, protuberance etc.), geophysical prospecting, displacement-measurement procedure, water level abnormality analytic approach, remote sensing aerophotographic method etc.But these methods exist the monitoring equipment volume large, need the problems such as the professional operates, can only monitor the important area of minority, the vast area that has potential safety hazard be can't be generalized to, rural area, enterprises and individuals are difficult to satisfy to the demand of Geological Hazards Monitoring and early warning.

Existing mountain landslide supervision and method for early warning and device all need to predict by the variation of observing or survey geologic structure the generation of geologic hazard, but, because there is very large contingency in the generation of geologic hazards such as coming down, subside, these method and apparatus can only provide the possibility of geologic hazards such as coming down, subside, the time that can't the accurate forecast disaster occurs.Therefore, need a kind of miniaturization, low cost, geologic hazard Real-Time Monitoring and the early warning systems such as landslide easy and simple to handle badly, to solve rural area, enterprises and individuals to the demand of Geological Hazards Monitorings such as coming down, subside and early warning.

Summary of the invention

The object of the present invention is to provide a kind of system that can carry out to geologic hazards such as landslides Real-Time Monitoring and early warning.This system dispose and easy to use, monitoring and early warning accuracy high, can provide the omen early warning of reliable landslide for rural, enterprise and human body user.

For achieving the above object, the sensor network that formed by a main controlled node and a plurality of sensor node of the present invention.The sensor node distributed deployment is responsible for gathering massif Ground Deformation and the vibration signal of different observation stations in the diverse location (as shown in Figure 2) of massif, and sends to main controlled node by wireless transmission method; The positional information of main controlled node receiving sensor node and underground instantaneous vibration signal, and data are carried out analysis-by-synthesis, the early warning information that will come down sends to alarm, sends the classifying alarm signal.

Main controlled node can be deployed in the stable position of geologic structure (as shown in Figure 2), and the GPS module of main controlled node is resolved self-position by receiving gps satellite signal, and sends differential signal to sensor node.The sensor node distributed deployment is in existing possible position, potential landslide (as shown in Figure 2), and the GPS module of sensor node is resolved the position of self, and sent main controlled node to according to the differential signal of gps satellite signal and main controlled node transmission.Main controlled node calculates the relative position of different sensors node and main controlled node by the positional information of wireless mode reception different sensors node, can obtain the Ground Deformation parameter of massif, for the landslide provides medium-term and long-term monitoring and early warning information.

When the oscillatory trigger of sensor node detects unusual ground vibration, trigger mems accelerometer and gather underground instantaneous vibration signal, and vibration signal is delivered to main controlled node.The underground instantaneous vibration information that the massif Ground Deformation parameter that main controlled node provides according to the GPS module and mems accelerometer provide is calculated the probability that the landslide occurs, and starts the alerting signal that alarm sends different brackets.

The present invention monitors and early warning the landslide unusually by detecting massif Ground Deformation and underground instantaneous vibration.Ground Deformation can reflect the variable condition of massif, predicts potential disaster of mountain massif coast; Underground instantaneous vibration abnormal signal has reacted the instantaneous change of massif, can detect exactly the landslide omen, provides real-time early warning information.Compare with the landslide pick-up unit that changes based on surface displacement, underground structure and massif degree of tilt, the present invention not only can provide medium-term and long-term early warning, the omen early warning of coming down accurately can also be provided, overcome long, the inaccurate shortcoming of time prediction of existing method and apparatus early warning cycle.

Description of drawings

Data transmission between Fig. 1 main controlled node and sensor node

Fig. 2 landslide real-time monitoring and early warning system network structure and deployment synoptic diagram

Fig. 3 sensor node circuit block diagram

Fig. 4 sensor node physical arrangement synoptic diagram

Fig. 5 main controlled node circuit block diagram

Fig. 6 main controlled node physical arrangement synoptic diagram

Embodiment

As shown in Figure 2, system is comprised of a main controlled node and a plurality of sensor node.Main controlled node is deployed in constitutionally stable zone, and observation base point is provided, and as data processing centre (DPC).Sensor node deployment is used for the deformation on monitoring massif earth's surface and underground abnormal vibration signal in potential zone, landslide.Transmit data and control information (as shown in Figure 1) by wireless transmission method between sensor node and the main controlled node.

The present invention utilizes the GPS receiver module of distributed sensor node to adopt the difference localization method to obtain the high-accuracy positional information of sensor node and main controlled node, thereby obtains the deformation parameter on massif earth's surface; Utilize the MEMS acceleration transducer to obtain underground instantaneous vibration abnormal signal in conjunction with oscillatory trigger, the Real-time Monitoring Data of subsurface geology activity can be provided.Fusion treatment by to this two classes signal not only can obtain landslide early-warning information, can also obtain the omen time prediction of high-precision landslide.

The present invention also can be applicable to monitoring and the early warning of the geologic hazards such as surface subsidence, rubble flow by monitoring Ground Deformation parameter and ground vibration signal.