CN201924290U

CN201924290U - Optical fiber anti-dropping mesh

Info

Publication number: CN201924290U
Application number: CN2010206869982U
Authority: CN
Inventors: 张文涛; 李芳�; 刘育梁
Original assignee: Institute of Semiconductors of CAS
Current assignee: Institute of Semiconductors of CAS
Priority date: 2010-12-28
Filing date: 2010-12-28
Publication date: 2011-08-10
Anticipated expiration: 2020-12-28

Abstract

The utility model discloses an optical fiber anti-dropping mesh, which comprises an anti-dropping mesh (10) used for preventing dropping material from falling to the ground, at least one optical fiber (20) distributed and installed on the anti-dropping mesh (10) and used for sensing the deformation situation of the anti-dropping mesh (10), and demodulating equipment (30) used for monitoring the deformation situation of the anti-dropping mesh (10) through the optical fiber (20). By adopting the optical fiber anti-dropping mesh, the problems of dropping material automatic monitoring of the anti-dropping mesh and long distance transmission of signals are solved.

Description

The anti-fall net of a kind of optical fiber

Technical field

The utility model relates to traffic technique and building, geotechnical engineering technical field, relates in particular to the anti-fall net of a kind of optical fiber.

Background technology

Anti-fall net is a kind of facility commonly used in highway communication, railway traffic, Construction of Civil Engineering, the geotechnical engineering, its objective is for anti-falling stop thing (people) born, to reduce life and property loss.

Common anti-fall net is all formed by high-intensity cordage or braided steel wire, only can play the anti-born effect of falling stop thing (people).Yet, under many circumstances, not only need to place the bob thing and land, also need to have judged whether to weigh down thing and drop on anti-fall online.As the railway traffic field, at the anti-fall net that high gradient slope is laid, fall within anti-fall on the net if any large rock mass, find early and manually get rid of, otherwise falling rocks may be through damaging anti-fall net by pressure and finally falling within railroad track and produce potential safety hazard after the long period.

But all can't detecting automatically, present anti-fall net whether have the thing of bob to weigh down down.Therefore, the utility model proposes the anti-fall net of a kind of optical fiber, utilize optical fiber can grow the incorporate characteristics of Distance Transmission, sensing and transmission, use it for the monitoring of anti-fall net.This is find to weigh down thing in time, as early as possible, gets rid of potential safety hazard, ensures that normal operation of means of transportation or building operations normally carry out the key technical problem that institute must solution.

The utility model content

(1) technical problem that will solve

In view of this, main purpose of the present utility model is to provide a kind of optical fiber anti-fall net, weighs down the problem that thing is monitored automatically, signal long-distance transmits to solve anti-fall net.

(2) technical scheme

For achieving the above object, the technical solution of the utility model is achieved in that

The anti-fall net of a kind of optical fiber, the anti-fall net of this optical fiber comprises:

Be used for the anti-born anti-fall net 10 of falling stop thing;

Laying is installed on being used on the anti-fall net 10 and experiences at least one optical fiber 20 of the distortion situation of anti-fall net 10; And

Be used for demodulated equipment 30 by the distortion situation of the anti-fall net 10 of optical fiber 20 monitorings.

In the such scheme, described anti-fall net 10 is compiled into grid line 11 by high-intensity fibrous material or wire, is worked out by grid line 11 again.

In the such scheme, described optical fiber 20 is compound on the grid line 11 by binding, mode bonding, that mix establishment.

In the such scheme, described demodulated equipment 30 is based on the time-domain analysis instrument or the domain reflectometer of optical fiber Brillouin scattering, monitors strain or the temperature that optical fiber is experienced according to the Brillouin scattering wavelength change in the optical fiber.

In the such scheme, further be laid with the thermometric optical fiber 21 that is used for thermometric and temperature-compensating on the described anti-fall net 10.

In the such scheme, further write the fiber grating that is used to experience anti-fall net 10 variations in temperature on the described optical fiber 20 by the phase mask method.

(3) beneficial effect

From technique scheme as can be seen, the utlity model has following beneficial effect:

1, the anti-fall net of this optical fiber that provides of the utility model has realized that by composite fiber anti-fall net weighs down the real-time automatic monitoring that thing falls.

2, the anti-fall net of this optical fiber that provides of the utility model, by composite fiber realized that anti-fall net weighs down that thing falls distributed monitoring.

3, the anti-fall net of this optical fiber that provides of the utility model, but signal long-distance transmissions.

4, the anti-fall net of this optical fiber that provides of the utility model, technology is simple, easy construction.

Description of drawings

The schematic diagram of the anti-fall net of optical fiber that Fig. 1 provides for the utility model.

The specific embodiment

For making the purpose of this utility model, technical scheme and advantage clearer,, and, the utility model is further described with reference to accompanying drawing below in conjunction with specific embodiment.

As shown in Figure 1, the schematic diagram of the anti-fall net of optical fiber that provides for the utility model of Fig. 1.The anti-fall net of this optical fiber comprises: lay and to be installed on being used on the anti-fall net 10 and to experience at least one optical fiber 20 of the distortion situation of anti-fall net 10; And the demodulated equipment 30 that is used for monitoring the distortion situation of anti-fall net 10 by optical fiber 20.In the such scheme, described anti-fall net 10 is compiled into grid line 11 by high-intensity fibrous material or wire, is worked out by grid line 11 again.Demodulated equipment 30 can be based on the time-domain analysis instrument or the domain reflectometer of optical fiber Brillouin scattering, monitors strain or the temperature that optical fiber is experienced according to the Brillouin scattering wavelength change in the optical fiber.

Anti-fall net 10 is compiled into grid line 11 by high-intensity fibrous material (as nylon fiber or aramid fiber etc.) or wire, is worked out by grid line 11 again.Optical fiber 20 can be compound on the grid line 11 by binding, mode bonding, that mix establishment.

Thermometric optical fiber 21 be can further lay on the anti-fall net 10, thermometric and temperature-compensating are used for.The thermometric optical fiber 21 same demodulated equipments 30 that insert carry out the signal demodulation.Can further write fiber grating on the optical fiber 20, be used to experience anti-fall net 10 variation of temperature by the phase mask method.This moment, demodulated equipment 30 can demodulate the temperature variant situation of fiber grating output light information, thereby realized the monitoring of temperature and temperature-compensating is carried out in the strain that optical fiber 20 is monitored.

Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. the anti-fall net of optical fiber is characterized in that, the anti-fall net of this optical fiber comprises:

Be used for the anti-born anti-fall net (10) of falling stop thing;

Laying is installed on being used on the anti-fall net (10) and experiences at least one optical fiber (20) of the distortion situation of anti-fall net (10); And

Be used for monitoring the demodulated equipment (30) of the distortion situation of anti-fall net (10) by optical fiber (20).

2. the anti-fall net of optical fiber according to claim 1 is characterized in that described anti-fall net (10) is compiled into grid line (11) by high-intensity fibrous material or wire, is worked out by grid line (11) again.

3. the anti-fall net of optical fiber according to claim 1 is characterized in that, described optical fiber (20) is compound on the grid line (11) by binding, mode bonding, that mix establishment.

4. the anti-fall net of optical fiber according to claim 1, it is characterized in that, described demodulated equipment (30) is based on the time-domain analysis instrument or the domain reflectometer of optical fiber Brillouin scattering, monitors strain or the temperature that optical fiber is experienced according to the Brillouin scattering wavelength change in the optical fiber.

5. the anti-fall net of optical fiber according to claim 1 is characterized in that, further is laid with the thermometric optical fiber (21) that is used for thermometric and temperature-compensating on the described anti-fall net (10).

6. the anti-fall net of optical fiber according to claim 1 is characterized in that, further writes the fiber grating that is used to experience anti-fall net (10) variations in temperature by the phase mask method on the described optical fiber (20).