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Underground pipeline perimeter intrusion early warning system

An underground pipeline and early warning system technology, applied in the direction of alarms, alarms, and instruments that rely on interference with short-wavelength radiation, can solve problems such as complex structure and high cost, and achieve simple system structure, low false alarm probability, and sensitive low level effect

Inactive Publication Date: 2014-07-16
李素贞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current optical fiber perimeter alarm system is based on the principle of vibration testing, so it has high sensitivity and can analyze and accurately judge the occurrence of various infringement events by capturing subtle changes in soil stress, but it has the disadvantages of complex structure and high cost. , and if the sensitivity is too high, it will cause an alarm when there is a slight disturbance, but it is not applicable to the situation where the alarm is only required when the facility is damaged

Method used

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Experimental program
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Effect test

Embodiment 1

[0035] see figure 1 , as shown in the figure, the perimeter intrusion warning system of underground pipelines includes three parts: optical cable 1, on-site alarm 2 and alarm management center host 3.

[0036] The optical cable 1 is arranged near the underground pipeline, and it can be laid along the warning belt of the underground pipeline, or can be buried shallowly below the ground surface, or can be placed on the ground surface when conditions permit. Requirements for the structure of the optical cable: multi-core (easy to repair); armor (with a certain rigidity, not easy to be damaged during normal laying); the rigidity should not be too large so as not to be damaged by external force.

[0037] The on-site alarm 2 is set along the underground pipeline, which can be placed inside various valve wells or maintenance wells connected to the monitored underground pipeline, or can be placed in an equipment box on the surface above the underground pipeline. The alarm device 2 an...

Embodiment 2

[0051] see figure 2 , the difference between the structure of the perimeter intrusion warning system for underground pipelines and the system described in Embodiment 1 is the on-site alarm 2, and the rest of the structure is the same.

[0052] The field alarm 2 of embodiment two also includes the second early warning module, that is, includes six major parts: (1) optical fiber loss test module; (2) data acquisition and storage module; (3) data remote transmission module; (4) ) the second alarm module; (5) the second early warning module (6) power supply.

[0053] The second early warning module is respectively connected with the data acquisition and storage module, the remote data transmission module and the second alarm module, and the second early warning module receives and analyzes the optical cable 1 delivered by the data acquisition and storage module. Point loss data, identify abnormal values ​​reflecting intrusion events, determine whether an intrusion event occurs a...

Embodiment 3

[0058] The structure of the present embodiment three is basically the same as that of the second embodiment, the difference being the second alarm module of the on-site alarm 2, which receives the first early warning signal fed back by the alarm management center host 3 at the same time. After the second early warning signal delivered by the second early warning module, an on-site alarm is performed. The working principle of the third embodiment is also basically the same as that of the second embodiment, the difference is that the first warning signal and the second warning signal must give an alarm command ("AND" relationship) at the same time, and the second alarm module can be activated The scene of the scene alarm 2 reports to the police.

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Abstract

An underground pipeline perimeter intrusion early warning system is used for monitoring and alarm for underground pipeline perimeter intrusion accidents. The system comprises an optical cable, an on-site alarm and an alarm management center host, wherein the optical cable is arranged along an underground pipeline, the on-site alarm is arranged along the underground pipeline and comprises an optical fiber loss test module, a data acquisition and storage module, a data remote transmission module, a second alarm module and a power supply, and the alarm management center host comprises a database, a first early warning module and a first alarm module. The system is used for detecting, analyzing and processing loss data of points along the optical cable, judging whether intrusion accidents occur or not and space positions and occurrence time corresponding to the intrusion accidents and giving an alarm according to analysis and judgment results. The system can carry out early warning and positioning as long as the optical cable is directly damaged or cut off, has the advantages of being simple in structure, small in false alarm probability and the like, and is especially suitable for application places of underground pipelines.

Description

technical field [0001] The invention relates to a safety early warning system, in particular to an underground pipeline perimeter intrusion early warning system used in municipal engineering, and belongs to the technical field of safety monitoring. Background technique [0002] Modern cities have a huge network of underground pipelines, which are responsible for the transportation of gas, electricity, water supply and drainage, and communications throughout the city, and have become the lifeline for the normal operation of the city. With the development of urban construction, especially the advancement of urbanization, construction sites of various residences, bridges, and tunnels are scattered everywhere, and accidents of urban underground pipelines being damaged by construction machinery emerge in endlessly. Once a pipeline damage accident occurs, the consequences will be very serious. Therefore, it is necessary to detect the running underground pipeline, so as to give ear...

Claims

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Application Information

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IPC IPC(8): G08B13/18G08B25/00
Inventor 李素贞
Owner 李素贞
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