CN103698061A - Online monitoring fence device based on optical fiber microbend loss - Google Patents
Online monitoring fence device based on optical fiber microbend loss Download PDFInfo
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- CN103698061A CN103698061A CN201210374695.0A CN201210374695A CN103698061A CN 103698061 A CN103698061 A CN 103698061A CN 201210374695 A CN201210374695 A CN 201210374695A CN 103698061 A CN103698061 A CN 103698061A
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Abstract
The invention discloses an online monitoring fence device based on optical fiber microbend loss. The online monitoring fence device comprises optical fiber clamps and a fence rod, wherein each the optical fiber clamp consists of an upper cover and a base; upper cover wave-shaped teeth are arranged at the bottom of the upper cover; base wave-shaped teeth are arranged at the top of the base; the upper cover wave-shaped teeth correspond to the base wave-shaped teeth through tooth tips and grooves; probing optical fibers are clamped between the upper cover wave-shaped teeth and the base wave-shaped teeth; the upper cover is fixed on the fence rod; the probing optical fibers are clamped between the upper cover wave-shaped teeth and the base wave-shaped teeth in a manner that one probing optical fiber comes and the other probing optical fiber goes; there are two optical fiber clamps; the two upper covers of the two optical fiber clamps are symmetrically distributed on the two sides of the fence rod and are tightly fixed on the fence rod by screws through fixing assembly holes in the upper covers. The online monitoring fence device is very high in sensitivity and simple in structure; the online monitoring fence device is easy to assemble and free from debugging and maintenance, thus simplifying onsite construction and installation steps, and reducing the cost.
Description
Technical field
The invention belongs to technical field of optical fiber sensing, be specifically related to a kind of on-line monitoring Fencing system based on fiber microbending loss.
Background technology
Optical fiber micro-bending sensor is that J.N.Fields in 1980 and J.H.Cole propose first, belongs to intensity modulation type Fibre Optical Sensor.Optical fiber micro-bending know-why is: the intensity loss producing based on the micro-curved of optical fiber.When optical fiber is subject to crooked disturbance, will produce bending loss, be mainly microbending loss and macrobending loss.Two kinds of bending losss are all to cause emergence pattern coupling in fibre core during due to fibre-optical bending, and guided modes can become radiation mode, thereby causes the loss of optical fiber power.
Existing fibre-optical sensing device, as polytypes such as fiber-optic grating sensor, optical fibre interferometric sensors, be characterized in that sensing sensitivity is very high, but equipment is complicated, uses operating cost high, and its application is limited by very large.As optical fibre interferometric sensor, its sensitivity is very high, but in actual applications, find that the environmental factors such as temperature, air pressure, vibration all have impact to it, the impact of taking many kinds of measures to prevent and rejecting these factors therefore have to, result makes instrument and equipment be tending towards complicated, and operation use cost improves.On the other hand, in actual life, some places do not need especially accurate equipment, and as we need to understand in the situations such as power value whether stress reach setting, the said equipment just seems and wasted one's talent on a petty job.In addition, the complexity of system is higher, and practical application is more difficult.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of on-line monitoring Fencing system based on fiber microbending loss, the bending based on detection optical fiber or microbending loss are realized the detection of pressure to external world, not only highly sensitive, and simple in structure, cost is low.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of on-line monitoring Fencing system based on fiber microbending loss, comprise fiber clamp and rack stake, it is characterized in that: described fiber clamp consists of upper cover and pedestal, the bottom of upper cover is provided with upper cover waveform tooth, the top of pedestal is provided with pedestal waveform tooth, described upper cover waveform tooth arranges in the crown mode corresponding with groove with pedestal waveform tooth, between described upper cover waveform tooth and pedestal waveform tooth, accompany detection optical fiber, described upper cover is fixed on rack stake.
Described detection optical fiber takes a detection optical fiber to be clipped between upper cover waveform tooth and pedestal waveform tooth in a mode of having a try.
Described fibre clip has two, and two upper cover is symmetrically distributed in the both sides of rack stake and is fastened on rack stake by the fixedly pilot hole above covering with screw.
Described upper cover and pedestal adopt the resistant to elevated temperatures material manufacture of anticorrosion.
Described rack stake adopts the resistant to elevated temperatures material manufacture of anticorrosion.
The described detection optical fiber being clipped between upper cover waveform tooth and pedestal waveform tooth also lays and is applied in rack stake simultaneously.
The present invention compared with prior art beneficial effect is embodied in: detection optical fiber is clipped between upper cover waveform tooth and pedestal waveform tooth, and fixture and rack stake fasten all-in-one-piece structure, make this on-Line Monitor Device can very easily detect the bending loss of optical fiber that any external force because being applied on rack stake causes, sensitivity is very high, and this apparatus structure is simple simultaneously, easily assembling, exempt from debugging, non-maintaining, simplified site operation and installation steps, reduced input cost.
Accompanying drawing explanation
Fig. 1 is fiber clamp of the present invention and detection optical fiber structural representation.
Fig. 2 is fiber clamp of the present invention and detection optical fiber perspective view.
Fig. 3 is perspective view of the present invention.
Fig. 4 is principle of work schematic diagram of the present invention.
In figure:
1-upper cover, 2-upper cover waveform tooth, 3-pedestal waveform tooth, 4-pedestal, 5-detection optical fiber, 6-is pilot hole fixedly, 7-rack stake.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiment of the invention process in detail.
Embodiment mono-: as Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, a kind of on-line monitoring Fencing system based on fiber microbending loss, comprise fiber clamp and rack stake 7, described fiber clamp consists of upper cover 1 and pedestal 4, the bottom of upper cover 1 is provided with upper cover waveform tooth 2, the top of pedestal 4 is provided with pedestal waveform tooth 3, described upper cover waveform tooth 2 arranges in the crown mode corresponding with groove with pedestal waveform tooth 3, between described upper cover waveform tooth 2 and pedestal waveform tooth 3, accompany detection optical fiber 5, this setup can guarantee that detection optical fiber is subject to very little external force and gets final product flexural deformation, on described upper cover 1, there are two fixedly pilot holes 6, two upper covers 1 are symmetrically distributed in the both sides of rack stake 7 and are fastened on rack stake 7 by the fixedly pilot hole 6 on upper cover 1 with screw, two upper covers 1 are fixed into and are integrated with rack stake 7.
A detection optical fiber 5 is set in this sniffer, described detection optical fiber 5 between upper cover waveform tooth 2 and pedestal waveform tooth 3 one have a try lay twice.
Described upper cover 1 and pedestal 4 adopt the resistant to elevated temperatures material manufacture of anticorrosion.
Described rack stake 7 adopts the manufacture of anticorrosion exotic material.
The described detection optical fiber 5 being clipped between upper cover waveform tooth 2 and pedestal waveform tooth 3 also lays and is applied in rack stake 7 with single form simultaneously.
In actual applications, on-line monitoring Fencing system of the present invention can arrange a plurality of as required, rack stake 7 intervals are wherein evenly in the same plane, between a plurality of on-Line Monitor Device, by a U-shaped groove, connect, described pedestal 4 be welded in described U-shaped groove and and rack stake between keep certain spacing, U-shaped groove plays fixed support effect to pedestal 4.
When having external force F1 to act on rack stake 7, rack stake 7 flexural deformations, because pedestal 4 is fixed on groove, upper cover 1 and rack stake 7 are one, therefore, rack stake 7 just can drive upper cover 1 to have together a downward power F2, cause upper cover waveform tooth 2 and 3 displacements of pedestal waveform tooth to change, thereby the bending curvature that is clipped in the detection optical fiber 5 between upper cover waveform tooth 2 and pedestal waveform tooth 3 is changed, and then cause the power of the light signal of transmission in detection optical fiber 5 to change, this variation is sent in Fibre Optical Sensor Transmit-Receive Unit and is processed demodulation by detection optical fiber 5.
Detection optical fiber 5 is clipped between upper cover waveform tooth 2 and pedestal waveform tooth 3 in a mode of having a try, in addition, detection optical fiber 5 is also laid in every rack stake 7 simultaneously, when rack stake 7 is applied to external force F1 from any direction, the power that can detect easily the light signal of transmission in the detection optical fiber 5 that detection optical fiber 5 causes because bending curvature changes changes, the detection sensitivity and the accuracy that have finally improved on-line monitoring Fencing system of the present invention.
Here description of the invention and application is illustrative, not wants by scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and for those those of ordinary skill in the art, the various parts of the replacement of embodiment and equivalence are known.Those skilled in the art are noted that in the situation that not departing from spirit of the present invention or essential characteristic, and the present invention can be with other form, structure, layout, ratio, and realizes with other assembly, material and parts.In the situation that not departing from the scope of the invention and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (6)
1. the on-line monitoring Fencing system based on fiber microbending loss, comprise fiber clamp and rack stake, it is characterized in that: described fiber clamp consists of upper cover and pedestal, the bottom of upper cover is provided with upper cover waveform tooth, the top of pedestal is provided with pedestal waveform tooth, described upper cover waveform tooth arranges in the crown mode corresponding with groove with pedestal waveform tooth, between described upper cover waveform tooth and pedestal waveform tooth, accompanies detection optical fiber, and described upper cover is fixed on rack stake.
2. a kind of on-line monitoring Fencing system based on fiber microbending loss according to claim 1, is characterized in that: described detection optical fiber takes a detection optical fiber to be clipped between upper cover waveform tooth and pedestal waveform tooth in a mode of having a try.
3. a kind of on-line monitoring Fencing system based on fiber microbending loss according to claim 1, it is characterized in that: described fibre clip has two, two upper cover is symmetrically distributed in the both sides of rack stake and is fastened on rack stake by the fixedly pilot hole above covering with screw.
4. a kind of on-line monitoring Fencing system based on fiber microbending loss according to claim 1, is characterized in that: described upper cover and pedestal adopt anticorrosion exotic material.
5. a kind of on-line monitoring Fencing system based on fiber microbending loss according to claim 1, is characterized in that: described rack stake adopts anticorrosion exotic material.
6. a kind of on-line monitoring Fencing system based on fiber microbending loss according to claim 1 and 2, is characterized in that: described in be clipped in detection optical fiber between upper cover waveform tooth and pedestal waveform tooth and lay and be applied in rack stake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374695.0A CN103698061A (en) | 2012-09-27 | 2012-09-27 | Online monitoring fence device based on optical fiber microbend loss |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374695.0A CN103698061A (en) | 2012-09-27 | 2012-09-27 | Online monitoring fence device based on optical fiber microbend loss |
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| CN103698061A true CN103698061A (en) | 2014-04-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019928A (en) * | 2014-06-24 | 2014-09-03 | 黑龙江工程学院 | Optical fiber micro-bending sensor with serialized cushion structure |
| CN104913906A (en) * | 2015-05-29 | 2015-09-16 | 成都亨通光通信有限公司 | Optical fiber bending loss determination system |
| CN104913905A (en) * | 2015-05-29 | 2015-09-16 | 成都亨通光通信有限公司 | Optical fiber bending loss determination method |
| CN105403338A (en) * | 2015-11-04 | 2016-03-16 | 上海大学 | Optical fiber compressed device |
| CN105606276A (en) * | 2015-12-24 | 2016-05-25 | 中北大学 | MEMS optical fiber micro-bend pressure sensor and preparation method thereof |
| CN108917802A (en) * | 2018-04-08 | 2018-11-30 | 安徽师范大学 | A kind of renewable type optical fiber micro-bending sensing device |
| CN114136430A (en) * | 2021-12-02 | 2022-03-04 | 无锡市德科立光电子技术股份有限公司 | Accurate cable searching system and method |
-
2012
- 2012-09-27 CN CN201210374695.0A patent/CN103698061A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019928A (en) * | 2014-06-24 | 2014-09-03 | 黑龙江工程学院 | Optical fiber micro-bending sensor with serialized cushion structure |
| CN104019928B (en) * | 2014-06-24 | 2015-12-30 | 黑龙江工程学院 | Seriation cushion layer structure optical fiber micro-bending sensor |
| CN104913906A (en) * | 2015-05-29 | 2015-09-16 | 成都亨通光通信有限公司 | Optical fiber bending loss determination system |
| CN104913905A (en) * | 2015-05-29 | 2015-09-16 | 成都亨通光通信有限公司 | Optical fiber bending loss determination method |
| CN105403338A (en) * | 2015-11-04 | 2016-03-16 | 上海大学 | Optical fiber compressed device |
| CN105606276A (en) * | 2015-12-24 | 2016-05-25 | 中北大学 | MEMS optical fiber micro-bend pressure sensor and preparation method thereof |
| CN105606276B (en) * | 2015-12-24 | 2018-06-12 | 中北大学 | MEMS optical fiber micro-bending pressure sensors and preparation method thereof |
| CN108917802A (en) * | 2018-04-08 | 2018-11-30 | 安徽师范大学 | A kind of renewable type optical fiber micro-bending sensing device |
| CN114136430A (en) * | 2021-12-02 | 2022-03-04 | 无锡市德科立光电子技术股份有限公司 | Accurate cable searching system and method |
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Application publication date: 20140402 |