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Monitoring device of optical cable distribution boxes and monitoring system of optical cable distribution boxes

A technology of optical cable transfer box and monitoring device, which is applied in the direction of transmission system, electromagnetic wave transmission system, fiber mechanical structure, etc., to achieve the effect of low equipment cost, reduced unit cost, and simple device combination

Active Publication Date: 2013-08-21
JIANGSU HENGTONG PHOTOELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims at the problem of how to simply and efficiently monitor the access control of the optical cable transfer box in a power-shortage environment, and provides a monitoring device for the optical cable transfer box

Method used

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  • Monitoring device of optical cable distribution boxes and monitoring system of optical cable distribution boxes
  • Monitoring device of optical cable distribution boxes and monitoring system of optical cable distribution boxes
  • Monitoring device of optical cable distribution boxes and monitoring system of optical cable distribution boxes

Examples

Experimental program
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Effect test

Embodiment 1

[0044] See figure 1 , Shown is an optical cable transfer box door opening monitoring device. The monitoring device is mainly composed of an optical fiber splitter 3, an optical switch 4 and an optical reflector 7. The optical fiber splitter 3 is arranged between the optical fiber monitoring input end 1 and the optical fiber monitoring output end 2 in the optical cable junction box to be monitored, and is used to separate an optical monitoring branch 19.

[0045] In order to separate the optical monitoring branch 19, the optical fiber splitter 3 may specifically adopt a fiber coupler or a planar waveguide optical splitter.

[0046] The optical splitting ratio between the optical monitoring branch end and the optical monitoring output end of the optical fiber splitter is between 0.1:99.9 and 5:95.

[0047] The optical switch 4 and the optical reflector 7 are sequentially connected in series on the optical monitoring branch 19, and the output end of the optical switch 4 cooperates with...

Embodiment 2

[0050] See figure 2 , Which shows the reflective switch type optical cable transfer box door open monitoring device provided by this example. The monitoring device in this example directly combines the fiber reflector and the optical switch. The optical switch 4 no longer has an output end, but an optical reflector 8 is installed in it, thereby forming a corresponding monitoring and control fiber reflector.

[0051] At the same time, the switch link 5 is linked by the door opening contact 6 to shading control the input light irradiated on the light reflector 8. The other structure is the same as the monitoring device in Example 1.

[0052] The monitoring device in this example uses the linkage of the door opening contact 6 and the switch link 5 to shading control the input light irradiated on the light reflector 8, thereby changing the intensity of the reflected light on the optical monitoring branch of the optical cable junction box. In this way, the strength and weakness of the ...

Embodiment 3

[0055] See image 3 , Which shows the transmission shielding type optical cable transfer box door opening monitoring device provided by this example. The device specifically includes two fiber collimating lenses 9 and a light reflecting mirror 8.

[0056] Two of the fiber collimating lenses 9 are respectively disposed at the fiber monitoring input end and the fiber monitoring output end of the fiber optic cable junction box, respectively, and the fiber collimating lens 9 can be a self-focusing lens or a collimating convex lens. The transmitted light is directly transmitted from the optical fiber monitoring input end 1 through the two optical fiber collimating lenses 9 and the free space between them to the optical fiber monitoring output end 2.

[0057] The light reflector 8 and the two optical fiber collimator lenses 9 are arranged in cooperation to reflect only part of the light beams collimated and expanded between the two optical fiber collimator lenses. At the same time, the d...

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Abstract

The invention discloses a monitoring device of optical cable distribution boxes and a monitoring system of the optical cable distribution boxes. The monitoring device forms a light monitoring branch in the optical cable distribution boxes, reflects optical signals on the light monitoring branch, and monitors states of the optical cable distribution boxes by means of changes of reflective signals. According to the monitoring device, optical cable monitoring input ends and optical cable monitoring output ends of the optical cable distribution boxes are connected in series through optical cables. Monitoring of the reflective signals of the optical cable distribution boxes is carried out on a local side through an optical time domain reflectometer. The optical cable distribution boxes are distinguished and positioned through distance values of the optical time domain reflectometer. Therefore, the monitoring of the multiple optical cable distribution boxes is achieved. By means of simple device combination and relatively low equipment cost, the monitoring of opening of distribution box doors of the optical cable distribution boxes can be achieved without power supplies,. Meanwhile, sensitive light reflection monitoring ability to the optical time domain reflectometer and large light attenuation dynamic range characteristics are used, so the monitoring of hundreds of the optical cable distribution boxes on an optical cable link can be achieved.

Description

Technical field [0001] The invention relates to optical fiber distribution equipment, in particular to the monitoring technology of an optical cable transfer box. Background technique [0002] The fiber optic cable transfer box is a kind of transfer equipment that provides fiber optic cable terminations and jumpers for the backbone and distribution layer fiber optic cables. After the optical cable is led into the optical cable transfer box, after fixing, terminating, and distributing the fiber, the backbone layer optical cable and the distribution layer optical cable are connected by jumpers. [0003] With the popularization of FTTH, there are more and more applications of optical cable transfer boxes, because there are a large number of user fibers and movable connectors in the optical cable transfer boxes. And they are generally placed in an outdoor environment, and the chassis has no communication and power introduction, so how to protect the safety of the optical cable transfe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44H04B10/071
Inventor 雷非钱建林周庆红
Owner JIANGSU HENGTONG PHOTOELECTRIC
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