Rock mass fracture instability micro-seismic signal wireless monitoring method and device based on NB-IOT (Narrow Band Internet of Things)

Abstract

The invention provides a rock mass fracture instability micro-seismic signal wireless monitoring method and device based on NB-IOT, and belongs to the technical field of geological disaster prevention and control, the method comprises the following steps: collecting a micro-seismic signal generated by rock mass fracture, using a long and short time window amplitude ratio method to pick up effective micro-seismic waveform data, and determining the micro-seismic waveform data; the method comprises the following steps of: receiving effective micro-seismic waveform data, extracting a micro-seismic feature vector from the effective micro-seismic waveform data, executing different compression strategies according to the micro-seismic feature vector to obtain a compressed data packet, scheduling an NB-IOT module by using a sleep wake-up algorithm, waking up when data needs to be sent, and performing sleep when data does not need to be sent; and when the NB-IOT module is in a wake-up state, the data packet is sent to the cloud platform, the cloud platform analyzes the received data packet, and if an early warning condition is satisfied, early warning information is sent. The NB-IOT technology is combined to solve the data long-distance transmission problem of rock mass fracture instability micro-seismic signal wireless monitoring, meanwhile, the working time of the NB-IOT module is prolonged, and the NB-IOT technology-based rock mass fracture instability micro-seismic signal wireless monitoring system has important practical value for geological disaster prevention and reduction.

Description

technical field [0001] The invention relates to the technical field of prevention and control of geological disasters, in particular to a method and device for wireless monitoring of microseismic signals of rock mass rupture instability based on NB-IOT. Background technique [0002] The instability and collapse of dangerous rocks are highly sudden and destructive. The strong impact force directly causes the collapse and damage of the buildings below, which seriously affects the normal operation of road and railway traffic and causes huge property losses. In recent years, there have been frequent incidents of dangerous rock collapses in tourist attractions and casualties at engineering construction sites, which have posed a serious threat to the lives of the people. Microseism (Microseism, MS) is a low-frequency acoustic signal with a frequency less than 100 Hz. It is the stress concentration inside the rock mass under the influence of external disturbance stress and temperat...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a NB-IOT-based wireless monitoring method and device for microseismic signals of rock mass rupture and instability, so as to solve the problem of limited use occasions caused by communication cables in the existing wired monitoring scheme for rock mass rupture and instability microseismic signals technical problem

As well as the problem that existing wireless transmission devices cannot be installed in remote areas due to high power consumption

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