Intelligent monitoring system for flexible passive protective net

A technology of passive protection and protective net, which is applied in measurement, instruments, alarms, etc. by measuring the change force of the optical properties of the material when it is under stress, and can solve the problems of high cost, poor consistency of anchor rope force, and low false alarm in the system and other problems, to achieve the effect of simple structure, good stability and strong adaptability

CN103985225AActive Publication Date: 2014-08-13NUCTECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-08-13

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Abstract

The invention relates to an intelligent monitoring system for a flexible passive protective net. The intelligent monitoring system of the flexible passive protective net includes a dangerous source capture system, a signal processing system and an alarm system. Under a condition that the signal processing system determines that dangers happen in the protective net and / or the protective net reaches a dangerous degree, alarm signals and / or intelligence information are / is sent in one or more methods. Fiber bragg grating sensors are preinstalled on lower support ropes of the flexible passive protective net. Through monitoring the tension of the lower support ropes of the protective net, signals related with rock fall and breakage of the protective net are monitored in a real-time manner and then the signals are returned to a fiber bragg grating demodulator.
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Description

technical field

[0001] The invention relates to the technical fields of optical fiber sensing, computer system integration and signal monitoring, in particular to the flexible protection technology for slope disasters, and is suitable for the safety monitoring of flexible passive protection nets. Background technique

[0002] my country is a mountainous country, especially in the western and southeastern mountainous areas. Geological hazards on slopes such as landslides, debris flows, slides, slides, collapses and weathering spalling often occur, especially in linear projects such as railways and highways. The most serious disasters are along the line. The occurrence of disasters has the characteristics of many points, wide areas, and long lines. Under the condition of limited resources (manpower, material resources, and financial resources), protection and management are very difficult or even impossible to prevent. It has become the main factor that threatens the normal oper...

Examples

Embodiment Construction

[0039] In order to make the purpose, structure and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] The schematic diagram of the flexible protective net monitoring system according to the embodiment of the present invention is shown in figure 1 Among them, it includes at least: a hazard capture system, a signal processing system, and an alarm system. In the present invention, the hazard source capture system is composed of flexible passive protective nets equipped with sensors, monitoring points, signal sensing light and fiber grating demodulators and other components.

[0041] According to the present invention, by monitoring the change of the pulling force of the support rope under the flexible protective net, the purpose of monitoring whether there is falling rock impacting the protective net can be achieved. Such as figure 2 As shown, 2-1 is the lower suppor...