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Optical fiber sensing network-based monitoring and early warning system and method

A technology of network monitoring and optical fiber sensing, applied in transmission systems, signal transmission systems, non-electrical signal transmission systems, etc. The problem is to overcome the lag of observed rock mass change, the loss is small, and the performance is good.

Pending Publication Date: 2019-05-21
SHANDONG SHENGLONG SAFETY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned patent document discloses a feedback analysis system for underground engineering rock mass displacement, it is limited to the collection of surrounding rock convergence deformation information, and does not solve the problem of rock mass information collection in goaf areas, nor can it realize the early warning and prediction of goaf collapse affecting the surface;

Method used

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  • Optical fiber sensing network-based monitoring and early warning system and method
  • Optical fiber sensing network-based monitoring and early warning system and method
  • Optical fiber sensing network-based monitoring and early warning system and method

Examples

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Embodiment 1

[0036] see figure 1 , figure 2 , image 3 , the monitoring and early warning system based on the optical fiber sensor network includes at least one sensor 1, and each sensor 1 is arranged with two measuring points, and the two measuring points of the sensor 1 are arranged in the overlying rock mass of the goaf at different depths, Obtain rock mass displacement information; the measuring point is actually a metal body, which is connected to the sensor 1 through a metal wire. When the rock mass moves, the metal body embedded in the rock mass transmits the rock mass displacement information through the metal wire to sensor 1; this sensor is actually the measurement tool.

[0037] The sensor 1 transmits the rock mass displacement information to the demodulator 3 through the optical cable 2; the demodulator 3 is used to convert the optical signal into a digital signal and transmit it to the industrial computer 4; the industrial computer 4 is used to Control and process the rock...

Embodiment 2

[0043] see figure 1 , figure 2 , image 3 , the difference from the above-described embodiments is that a monitoring and early warning method based on an optical fiber sensor network includes the following steps:

[0044] Step 1): Arranging at least one sensor and two measuring points in the overlying rock mass in the goaf at different depths to obtain rock mass displacement information;

[0045] Step 2): the sensor transmits the information obtained by the measuring point to the industrial computer through the demodulator;

[0046] Step 3): The industrial computer transmits the controlled and processed information to the cloud platform, and the cloud platform is used to store the information and analyze and calculate the information data.

[0047] Step 4): The information after statistical analysis and calculation of the cloud platform is pushed to the user.

[0048] Preferably, the sensor measuring points are arranged vertically in the overlying rock mass of the goaf at...

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Abstract

The invention discloses an optical fiber sensing network-based monitoring and early warning system and method. The system comprises at least one sensor and two measuring points for acquiring rock bodydisplacement information; the sensor transmits the rock body displacement information to a demodulator through an optical cable; the demodulator demodulates optical signals into digital signals and transmits the digital signals to an industrial computer; the industrial computer transmits the rock body displacement information to a cloud platform via the Internet; and the cloud platform is used tosave the information and analyze and calculate the information data. The method comprises steps: 1, the two measuring points of at least one sensor is arranged in an overburden body to obtain the rock body displacement information; 2, the sensor transmits the acquired information to the industrial computer through the demodulator; 3, the industrial computer transmits the information after controlprocessing to the cloud platform; and 4, the cloud platform pushes the information after calculation to a user. The optical fiber sensing network-based monitoring and early warning system and the method disclosed in the invention have the advantages of good rock body displacement monitoring effects, strong reliability and high accuracy.

Description

technical field [0001] The invention relates to the technical field of rock mass displacement monitoring, in particular to a monitoring and early warning system and method based on an optical fiber sensor network. Background technique [0002] The traditional method of dynamic monitoring of overlying rock mass displacement in the goaf is to set monitoring base points on the ground, and use instruments such as level, theodolite, total station or GPS to observe the change state of the surface. [0003] This monitoring method is to observe the change result of rock mass displacement, not the change process, and it cannot realize forecast and early warning. Establish an optical fiber sensing network, arrange deep and shallow monitoring base points in the borehole, use the computer to calculate the change speed of the deep and shallow base points, and use the change speed calculation to affect the surface period, realizing the monitoring and early warning of the overlying rock ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/10G08C23/06G01D21/02H04L29/08
Inventor 孙增荣吴琪孙增华
Owner SHANDONG SHENGLONG SAFETY TECH CO LTD
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