CN206919907U - Hypogee Fiber Bragg Grating Sensor Array and its protector - Google Patents

Hypogee Fiber Bragg Grating Sensor Array and its protector Download PDF

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Publication number
CN206919907U
CN206919907U CN201720715750.6U CN201720715750U CN206919907U CN 206919907 U CN206919907 U CN 206919907U CN 201720715750 U CN201720715750 U CN 201720715750U CN 206919907 U CN206919907 U CN 206919907U
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China
Prior art keywords
fiber
grating sensor
optic grating
hypogee
optical cable
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Expired - Fee Related
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CN201720715750.6U
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Chinese (zh)
Inventor
张平
刘国忠
张建荣
唐园慧
侯华
李斌
杨波
权钟
杜晓磊
周惠晋
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Kotel Aerospace Defense Technology Co Ltd Shanxi
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Kotel Aerospace Defense Technology Co Ltd Shanxi
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Priority to CN201720715750.6U priority Critical patent/CN206919907U/en
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Abstract

The utility model discloses a kind of hypogee Fiber Bragg Grating Sensor Array and its protector.Fiber Bragg Grating Sensor Array is the strain testing array for hypogee of multiple TCH test channel compositions;Each TCH test channel is composed in series by several fiber-optic grating sensors;Photo-lithographical formed bragg grating, is fixed in two fixing terminals, fixing terminal is connected through a screw thread with spring beam after the metallized processing of bragg grating in the middle part of the bare fibre at fiber-optic grating sensor center;Armouring coating is provided with outside bare fibre and forms armored optical cable, armored optical cable crimps at crimp type terminal fixes and place aligned sleeves.Fiber-optic grating sensor is connected into passage by the utility model by single mode single armored optical cable, and fiber-optic grating sensor, armored optical cable and fusion point are protected:Job site, installation and debugging fiber-optic grating sensor are conveyed into, and lays passage.The utility model meets requirement of the fused fiber splice to environment, improves operating efficiency.

Description

Hypogee Fiber Bragg Grating Sensor Array and its protector
Technical field
A kind of hypogee Fiber Bragg Grating Sensor Array and its protector are the utility model is related to, belongs to optical fiber light Gate sensor field.
Background technology
At present, fiber grating sensing technology is damaged with its superior electromagnetism interference, electric insulation, corrosion-resistant, small volume, transmission The features such as small, transmission capacity is big is consumed, is widely used in building structure health monitoring field, but in the project implementation The laying protection of Cheng Zhong, fiber-optic grating sensor and optical cable is a line construction link, is faced with severe civil construction environment, institute It is the important leverage of system long-term stable operation with effective safeguard procedures and construction technology.
Fiber-optic grating sensor mounting means has two kinds of installing type and built-in type, for Large Underground pouring type building, The limitation in space determines most suitable laying mode to pour built-in type.Reason has three:First, measuring point position can be improved The free degree, realize that no dead angle is laid;Second, without reserved finishing operations space;Third, the building structure after pouring is to fiber grating Sensor and optical cable form splendid protection.
The core component of fiber-optic grating sensor is one section of fiber grating on bare fibre, and bare fibre quality itself is crisp It is weak, easy fracture, the environmental suitability and service life of fiber-optic grating sensor are improved, is exactly primarily the ring for improving optical fiber Border adaptability and long-term working stability.The factor for influenceing optical fiber service life mainly has:First, the micro-crack of optical fiber surface is deposited And expand;2nd, erosion of the water and steam molecule to optical fiber surface in atmospheric environment;3rd, it is residual during unreasonable laying optical cable The stress long term stayed.Live, the erection of bar construction, concreting and mechanical pudding process in civil construction In, meeting directly bring the effect of steam and stress, this infrared optical fiber to embedded fiber-optic grating sensor and its optical fiber connecting passage The mode of the optical-fibre channel connection generally use welding of grating sensor, it is operated finely, in the extensive construction of civil engineering Great difficulty of construction be present in scene.
Accordingly, it is capable to it is no live in extensive civil construction, especially to optical fiber light during vibratory concrete consolidates and solidifies Gate sensor and optical cable provide effectively protection;It can realize that fiber-optic grating sensor lays progress synchronous with steel frame construction structure, Without construction cross influence, realize that no dead angle fiber-optic grating sensor is laid;It can realize that the long-term work of monitoring system is stable, Building plays due effect in decades even upper century-old service life easily, depends primarily on optical fiber grating sensing Whether the safeguard procedures of device, optical fiber and its fusion point are steady in a long-term, effective.
The content of the invention
The utility model provides a kind of hypogee Fiber Bragg Grating Sensor Array and its protector.
Fiber Bragg Grating Sensor Array provided by the utility model, be made up of multiple TCH test channels, each TCH test channel by Some fiber-optic grating sensors are composed in series, and adjacent two fiber-optic grating sensor junctions are connected by fused fiber splice mode Connect.Sensor both ends can transmit optical signal, and correspondingly each passage both ends can transmit optical signal.When test system works, Wideband light source is in TCH test channel via coupler, program control photoswitch, distribution facility, main cable, single mode single armored optical cable Each fiber-optic grating sensor provides wideband light source, and fiber-optic grating sensor carries out wavelength modulation and is reflected back it from Yuan Lu Go, fiber Bragg grating (FBG) demodulator is coupled into by coupler, demodulate and be converted to and be transferred to control main frame after electric signal and enter line number According to analysis and storage, in addition, row of channels switching is entered in the control of the controlled main frame of program control photoswitch.
Protector includes the protection of sensor, fusion point and single mode single armored optical cable.Between fiber-optic grating sensor, The junction of sensor and armored optical cable is arranged to fusion point by the way of bare fibre welding.
The utility model provides a kind of hypogee Fiber Bragg Grating Sensor Array, and the center of fiber-optic grating sensor is A piece bare fibre, the photo-lithographical formed bragg grating in bare fibre middle part, is welded after the metallized processing of bragg grating Connect and be fixed in two fixing terminals, fixing terminal is connected through a screw thread with spring beam;Fence structure is provided with the middle part of spring beam, often Intersect 90 degree between two fence structures;Rubber ring is put in spring beam both ends provided with capillary groove card, and integrally wears metal sleeve;Gu Fixed end is connected through a screw thread with socket post;It is socketed the end installation crimp type terminal of post;The fibre core of fiber grating extension penetrates armour Optical cable is filled, armored optical cable crimps fixation at crimp type terminal, and binding site places aligned sleeves;Fiber-optic grating sensor both ends It is by the cylinder of two kinds of structure compositions of pagoda shape and accurate thread to be socketed post.
Fiber-optic grating sensor fabrication scheme is:Photo-lithographical formed Bragg grating is quick as core in the middle part of bare fibre Feel unit, to being welded in after itself and a bit of bare fibre adjacent thereto progress metalized in two fixing terminals, this two Individual fixing terminal is threadedly coupled with spring beam in advance.Spring beam both ends have capillary groove, are integrally worn again after placing rubber ring Metal sleeve, then socket post is installed at its both ends, is socketed the other end installation crimp type terminal of post, single mode single armored optical cable Protection structure is crimped at crimp type terminal after bare fibre is worn and fixed.
In such scheme, rubber ring is provided with the capillary groove.
In such scheme, the both ends of the bragg grating are fixed with fixing terminal by way of welding.
In such scheme, its internal Bragg grating and a bit of bare fibre adjacent thereto carry out metalized, The strain sensitivity of fiber grating is drastically increased, while it is stable to also improve waterproof, protection against the tide, resistance to stress and long-term work Property.Bragg grating fixing terminal after metalized welds together, and drastically increases fiber grating sensitivity, simultaneously Also improve long-term working stability.The spring beam fence structure at middle part can realize multidimensional stretching and bending, it is possessed together When sensing stretching, bending, distortion three kinds of forms strain.The metal sleeve and rubber ring being set on spring beam, can be to it Internal bare fibre and fiber grating, there is provided waterproof, protection against the tide, antidetonation, resistance to stress protection.
The utility model provides a kind of hypogee Fiber Bragg Grating Sensor Array protector, and wherein sensor is anti- Protection unit is arranged on the outside of fiber-optic grating sensor, and protector includes protection hard tube, nut, bearing, hose clamp, protecting hose; Protection hard tube is set on the outside of fiber-optic grating sensor, the full silica type waterproof packing material of its gap filling, carries out waterproof, shock insulation And anti-radial compression protection;Fiber-optic grating sensor both ends are symmetrically arranged with nut, bearing, hose clamp, and fiber-optic grating sensor leads to Cross nut and bearing to fix with main reinforcement, wherein bearing is welded on main reinforcement;Protecting hose is socketed on fiber-optic grating sensor On the socket post at both ends, include by hose clamp banding, in protecting hose connection sensor all single mode single armored optical cables and Its fusion point, pass through the protector connection sealing at fusion point between each section of protecting hose.
Protecting hose is provided with the outside of the pagoda shape structure of the socket post at fiber-optic grating sensor both ends, is socketed the accurate spiral shell of post Fiber-optic grating sensor is fixed on bearing by line structure by nut, locking by the way of double nut is to top, passes through adjustment Nut location calibrates fiber-optic grating sensor.
The installation method of above-mentioned protector is as follows:
(1)Aligned sleeves are placed in single mode single armored optical cable and crimp type terminal binding site, avoid excessive fiber bending Caused by attenuated optical signal and stress build up;
(2)Protecting hose is socketed on fiber-optic grating sensor socket post, and passes through hose clamp banding;
(3)Bearing is fixed with main reinforcement by way of welding, and fiber-optic grating sensor is fixed by nut and bearing, is adopted It is locking to the mode on top with double nut, fiber-optic grating sensor is calibrated by adjusting nut position;
(4)Protection hard tube material is worn in the middle part of fiber-optic grating sensor, filling full silica type waterproof packing material in its gap is right Fiber-optic grating sensor carries out waterproof, shock insulation and the protection of anti-radial compression.
The protector of fusion point is followed successively by the outer silk of optical fiber heat-shrink tube, metal thin tube, protecting hose and double end from inside to outside Tubing.
The operation of fusion point protectiving scheme is as follows:Optical fiber heat-shrink tube forms first of protection at fusion point, then wears metal Tubule forms second protection, then wears protecting hose and form the 3rd protection, finally wears double end external fiber tube material and forms the 4th Road protects.
The protector of single mode single armored optical cable refers to the protecting hose worn outside optical cable.
Fusion point protectiving scheme provided by the utility model:
(1)Protecting hose is worn outside all single mode single armored optical cables, protecting hose has softness, the feature of wall thickness, increased Strong single mode single armored optical cable is radially anti-extrusion and water resistance and the anti-hauling ability of axial direction;
(2)Optical fiber is docked by way of welding, and optical fiber fusion welding point forms first of protection using optical fiber heat-shrink tube, wears Metal thin tube forms second protection, wears protecting hose and forms the 3rd protection, wears double end external fiber tube material and form the 4th Protection, so diametrically possesses splendid anti-vibration, shock resistance is anti-extrusion, water resistance;Metal thin tube and single mode simultaneously The crimping of single armored optical cable is firm, and double end external fiber tube material is combined closely with protecting hose by clamping head, so in the axial direction with list Mould single armored optical cable possesses consistent anti-hauling ability.
Optical fiber fusion welding point protector is made a general survey of, radially provides anti-vibration for bare fibre, shock resistance is anti-extrusion, waterproof A series of protections, bare fibre increases again on the basis of the existing dual loose tube structure of single mode single armored optical cable itself on axial direction Add pine set protection of the one layer of protecting hose to single mode single armored optical cable, and then possess more superior anti-hauling ability, It is all good that each protection effect is reacted in job site.
The utility model provides a kind of protector of hypogee Fiber Bragg Grating Sensor Array, its construction technology It is as follows:
First, fiber-optic grating sensor is connected into passage by single mode single armored optical cable, and to optical fiber grating sensing Device, single mode single armored optical cable and fusion point are protected in the way described above, and then, turnover is conveyed into job site, pacifies Adjustment tries fiber-optic grating sensor, and lays passage.
Compared with prior art, the beneficial effects of the utility model have:
(1)The metallized processing in the fiber grating position of fiber-optic grating sensor and by way of welding and fixing terminal It is fixed, and between fiber-optic grating sensor bearing and main reinforcement and be welded and fixed, from optical fiber is drastically increased to dependent variable Perception;
(2)Elastic beam structure possesses it while senses stretching, bending, the adaptability to changes for distorting three kinds of forms;
(3)The protectiving scheme of fiber-optic grating sensor realizes carries out waterproof, shock insulation and anti-footpath to fiber-optic grating sensor Protected to extruding;
(4)The protectiving scheme of optical fiber and fusion point, diametrically, for optical fiber provide anti-vibration, shock resistance, it is anti-extrusion, A series of protections of waterproof;In the axial direction, by triple loose tube structures, single mode single armored optical cable is made to possess splendid anti-lead Draw ability;The protectiving scheme of optical fiber fusion welding point provides triple warping resistance protections for fusion point;
(5)In terms of construction technology, by the way that the procedure arrangements such as the connection of TCH test channel, fused fiber splice, product protection are shown up Outer clean place is carried out, and is met requirement of the fused fiber splice to environment, while operating efficiency is improved, is also significantly improved The operation ecology of workmen.
Brief description of the drawings
Fig. 1 is the utility model test system schematic diagram;
Fig. 2 is the utility model fiber-optic grating sensor structural representation;
Fig. 3 is the utility model elastic beam structure schematic diagram;
Fig. 4 is the utility model fiber-optic grating sensor and its protector schematic diagram;
Fig. 5 is the utility model optical fiber and its fusion point protector schematic diagram;
Fig. 6 is the utility model scheme of installation;
In figure, 1. Fiber Bragg Grating Sensor Arrays, 1-1. fiber-optic grating sensors, 1-1-1. crimp type terminals, 1-1-2. is naked Optical fiber, 1-1-3. socket posts, 1-1-4. rubber rings, 1-1-5. spring beams, 1-1-6. metal sleeves, 1-1-7. fixing terminals, 1- 1-8. bragg gratings .1-1-9:Armouring coating .1-1-10:Aligned sleeves, 1-2. hose clamps, 1-3. nuts, 1-4. branch Seat, 1-5. protection hard tubes, 2. cable protection devices, 2-1. armored optical cables, 2-2. protecting hoses, 3. optical fiber fusion welding points protection dress Put, 3-1. clamping heads, 3-2. double end external fiber tube materials, 3-3. optical fiber heat-shrink tubes, 3-4. metal thin tubes, 4. distribution facilities, 5. trunks Optical cable, 6. program control photoswitches, 7. wideband light sources, 8. couplers, 9. fiber Bragg grating (FBG) demodulators, 10. control main frames, 11. main steel Muscle.
Embodiment
The utility model is further illustrated below by embodiment, but is not limited to following examples.
Embodiment:
As shown in figure 1, a kind of fibre-optical grating sensor for Large Underground Structure(1-1), it is by multiple surveys Ping the Fiber Bragg Grating Sensor Array for hypogee of composition(1).Wideband light source(7)Through overcoupling device after generation (8), program control photoswitch, facility of supporting a leading actor, backbone optical cable(5), single mode single armored optical cable(2-1), it is transferred to TCH test channel.Test Passage head and the tail both ends can receive wideband light source(7), subsequent each fiber-optic grating sensor(1-1)Generate specific wavelength modulation light Signal Bing Yanyuan roads reflect back.Optical signal passes through single mode single armored optical cable(2-1), distribution facility(4), backbone optical cable(5) Reach program control photoswitch(6), the program control controlled main frame of photoswitch(10)Control open corresponding transmission channel in specific time sequence, with Optical signal passes through coupler afterwards(8)Reach fiber Bragg grating (FBG) demodulator(9), it is demodulated and be converted into electric signal and logical by specifying News agreement is transferred to control main frame(10).Control main frame(10)Data analyzed, differentiated, being stored etc. with a series of processing behaviour Make, complete the monitoring to the structural health conditions of Large Underground Structure.
In Fig. 1, each TCH test channel is by several fiber-optic grating sensors(1-1)It is composed in series, fiber-optic grating sensor (1-1)With main reinforcement(11)When being fixed as one, for measuring main reinforcement(11)Strained situation, in free laying state When, for the real time environment temperature of passage where measuring, temperature compensation calibration is carried out to dependent variable using the temperature measured.
As shown in Figure 2,3, fiber-optic grating sensor(1-1)Center be a bare fibre(1-1-2), bare fibre middle part passes through It is lithographically formed bragg grating(1-1-8), two fixing terminals are welded in after the metallized processing of bragg grating (1-1-7)On, the two fixing terminals(1-1-7)With spring beam(1-1-5)It is connected through a screw thread.Spring beam(1-1-5)Middle part Provided with fence structure, intersect 90 degree between each two fence structure;Spring beam both ends are provided with capillary groove, place rubber ring(1-1- 4)It is overall again afterwards to wear metal sleeve(1-1-6), socket post is respectively equipped with metal sleeve both ends(1-1-3), fixing terminal It is connected through a screw thread with socket post;It is socketed post(1-1-3)The other end installation crimp type terminal(1-1-1), single mode single armouring light Cable(2-1)Protection structure wearing bare fibre(1-1-2)Afterwards in crimp type terminal(1-1-1)Place's crimping is fixed;
In Fig. 3, positioned at fiber-optic grating sensor(1-1)Middle part for spring beam(1-1-5), special construction makes it can be with axle To stretching, radially bending and pivoting so that fiber-optic grating sensor(1-1)Possess while sense stretching, bending, distortion The strain of three kinds of forms.
As shown in Fig. 2 ~ 4, fiber-optic grating sensor(1-1)Main body both ends are respectively equipped with socket post(1-1-3), it is socketed post (1-1-3)It is by the cylinder of two kinds of structure compositions of pagoda shape and accurate thread, its pagoda shape termination is easy to soft with supporting protection Pipe(2-2)Quick socket, the part adjacent with pagoda shape termination is accurate thread, with clamp nut(1-3)It is supporting, it is configured with four Only special nut(1-3), pass through bearing(1-4)Fixed and adjustment fiber-optic grating sensor(1-1), utilize double nut(1-3) Fiber-optic grating sensor is fixed to the mode on top(1-1).In single mode single armored optical cable(2-1)With crimp type terminal(1-1-1)Knot Close position and place aligned sleeves(1-1-10), attenuated optical signal and stress build up caused by avoiding excessive fiber bending.Protect soft Pipe(2-2)It is socketed on fiber-optic grating sensor(1-1)The socket post at both ends(1-1-3)On, and pass through hose clamp(1-2)Banding.
As shown in figure 5, optical fiber is connected by way of welding, fusion point is formed.Fiber-optic grating sensor(1-1)Between and With armored optical cable(2-1)Junction use bare fibre(1-1-2)The mode of welding is arranged to fusion point, and optical fiber fusion welding point uses Optical fiber heat-shrink tube(3-3)After forming first of protection, metal thin tube is worn(3-4)Second protection is formed, wears protecting hose (2-2)The 3rd protection is formed, finally wears double end external fiber tube material(3-2)Form the 4th protection.In addition, metal thin tube(3- 4)With single mode single armored optical cable(2-1)Crimping is firm, double end external fiber tube material(3-2)With protecting hose(2-2)By clamping head(3- 1)Combine closely.Optical fiber fusion welding point safeguard structure to be made a general survey of, diametrically, anti-vibration is provided for optical fiber, shock resistance is anti-extrusion, A series of protections of waterproof, even more provide triple warping resistance protections for fusion point;In the axial direction, bare fibre(1-1-2)In list Mould single armored optical cable(2-1)Existing double loose tube structure itself(That is Loose tube and sheathed structure)On the basis of again add One layer of protecting hose(2-2)To single mode single armored optical cable(2-1)Pine set protection, and possess bigger anti-traction buffering. The protectiving scheme of site operation and concreting reaction, optical fiber and its fusion point, for fragile bare fibre(1-1-2)Especially Optical fiber fusion welding point provides splendid protection.
As shown in fig. 6, fiber-optic grating sensor(1-1)Pass through nut(1-3)And bearing(1-4)With main reinforcement(11)Gu It is fixed, bearing(1-4)With main reinforcement(11)Fixed in a pre-installation by way of welding.In fiber-optic grating sensor(1-1)Middle part Wear protection hard tube(1-5), the full silica type waterproof packing material of its gap filling, to fiber-optic grating sensor(1-1)Prevented Water, shock insulation and the protection of anti-radial compression.
The utility model provides the construction method of the protector of hypogee Fiber Bragg Grating Sensor Array:It is first First, fiber-optic grating sensor is connected into passage by single mode single armored optical cable, and to fiber-optic grating sensor, single mode single Armored optical cable and fusion point are protected:Finally, have enough to meet the need and be conveyed into job site, installation and debugging fiber-optic grating sensor, and Lay passage.
Further, the method protected fiber-optic grating sensor, single mode single armored optical cable is:
(1)Aligned sleeves are placed in single mode single armored optical cable and crimp type terminal binding site, avoid excessive fiber bending Caused by attenuated optical signal and stress build up;
(2)Protecting hose is socketed on fiber-optic grating sensor socket post, and passes through hose clamp banding;
(3)Bearing is fixed with main reinforcement by way of welding, and fiber-optic grating sensor is fixed by nut and bearing, is adopted It is locking to the mode on top with double nut, fiber-optic grating sensor is calibrated by adjusting nut position;
(4)Protection hard tube material is worn in the middle part of fiber-optic grating sensor, filling full silica type waterproof packing material in its gap is right Fiber-optic grating sensor carries out waterproof, shock insulation and the protection of anti-radial compression.
Further, the method protected fusion point is:
Optical fiber is docked by way of welding, and optical fiber fusion welding point forms first of protection using optical fiber heat-shrink tube, wears gold Category tubule forms second protection, wears protecting hose and forms the 3rd protection, wears double end external fiber tube material formation the 4th and prevents Shield;Metal thin tube crimps firmly with single mode single armored optical cable simultaneously, and double end external fiber tube material is close by clamping head with protecting hose With reference to so possessing with single mode single armored optical cable consistent anti-hauling ability in the axial direction.

Claims (6)

  1. A kind of 1. hypogee Fiber Bragg Grating Sensor Array, it is characterised in that:It is used for by what multiple TCH test channels formed The strain testing array of hypogee;Each TCH test channel is by several fiber-optic grating sensors(1-1)It is composed in series, it is adjacent Two fiber-optic grating sensors(1-1)Junction is connected by fused fiber splice mode, and sensor both ends can transmit optical signal;
    Fiber-optic grating sensor(1-1)Center be a bare fibre(1-1-2), the photo-lithographical formed Prague light in bare fibre middle part Fine grating(1-1-8), two fixing terminals are fixedly welded on after the metallized processing of bragg grating(1-1-7)On, Gu Fixed end(1-1-7)With spring beam(1-1-5)It is connected through a screw thread;Spring beam(1-1-5)Middle part is provided with fence structure, each two Intersect 90 degree between fence structure;Spring beam both ends are provided with capillary groove, and spring beam is located at metal sleeve(1-1-6)Outside, in gold Category sleeve pipe both ends are respectively equipped with socket post(1-1-3), fixing terminal with socket post be connected through a screw thread;It is socketed post(1-1-3)'s End is installed by crimp type terminal(1-1-1);Armouring coating is provided with outside the bare fibre at fiber-optic grating sensor both ends(1-1-9), shape Into armored optical cable(2-1), armored optical cable is in crimp type terminal(1-1-1)Place's crimping is fixed;The fixing point places aligned sleeves(1-1- 10);Fiber-optic grating sensor(1-1)The socket post at both ends(1-1-3)It is by two kinds of structure compositions of pagoda shape and accurate thread Cylinder.
  2. 2. hypogee Fiber Bragg Grating Sensor Array according to claim 1, it is characterised in that:The spring beam two Rubber ring is provided with the capillary groove at end(1-1-4).
  3. 3. hypogee Fiber Bragg Grating Sensor Array according to claim 1, it is characterised in that:Prague light The both ends of fine grating and fixing terminal(1-1-7)Fixed by way of welding.
  4. 4. a kind of protector of the hypogee Fiber Bragg Grating Sensor Array described in any one of claim 1 ~ 3, it is special Sign is:The protector is arranged on fiber-optic grating sensor(1-1)Outside, protector include protection hard tube, nut, branch Seat, hose clamp, protecting hose;Protect hard tube(1-5)It is set in fiber-optic grating sensor(1-1)Outside, the full silica gel of its gap filling Class waterproof packing material;Fiber-optic grating sensor both ends are symmetrically arranged with nut, bearing, hose clamp, fiber-optic grating sensor(1-1) Pass through nut(1-3)And bearing(1-4)With main reinforcement(11)Fix, wherein bearing(1-4)It is welded on main reinforcement(11)On;Protection Flexible pipe(2-2)It is socketed on fiber-optic grating sensor(1-1)The socket post at both ends(1-1-3)On, pass through hose clamp(1-2)Banding;
    Fiber-optic grating sensor(1-1)The socket post at both ends(1-1-3)Pagoda shape structure on the outside of be provided with protecting hose(2-2), It is socketed post(1-1-3)Accurate thread structure pass through nut(1-3)By fiber-optic grating sensor(1-1)It is fixed on bearing(1-4) On, it is locking by the way of double nut is to top, pass through adjusting nut(1-3)Fiber-optic grating sensor is calibrated in position(1-1).
  5. 5. the protector of hypogee Fiber Bragg Grating Sensor Array according to claim 4, it is characterised in that:Light Fiber grating sensor(1-1)Between and and armored optical cable(2-1)Junction use bare fibre(1-1-2)The mode of welding is set Into fusion point, four layers of protective layer are provided with the outside of fusion point, protective layer is followed successively by optical fiber heat-shrink tube from inside to outside(3-3), metal it is thin Pipe(3-4), protecting hose(2-2)With double end external fiber tube material(3-2).
  6. 6. the protector of hypogee Fiber Bragg Grating Sensor Array according to claim 5, it is characterised in that:Institute The metal thin tube stated(3-4)With armored optical cable(2-1)Crimping is fixed;The double end external fiber tube material(3-2)With protecting hose(2-2) Pass through clamping head(3-1)Combine closely.
CN201720715750.6U 2017-06-20 2017-06-20 Hypogee Fiber Bragg Grating Sensor Array and its protector Expired - Fee Related CN206919907U (en)

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CN201720715750.6U CN206919907U (en) 2017-06-20 2017-06-20 Hypogee Fiber Bragg Grating Sensor Array and its protector

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Application Number Priority Date Filing Date Title
CN201720715750.6U CN206919907U (en) 2017-06-20 2017-06-20 Hypogee Fiber Bragg Grating Sensor Array and its protector

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Publication Number Publication Date
CN206919907U true CN206919907U (en) 2018-01-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107167165A (en) * 2017-06-20 2017-09-15 中国人民解放军63729部队 Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method
CN108318972A (en) * 2018-03-14 2018-07-24 北京宏源四方科技开发有限公司 A kind of optical fiber connection seal and pressure bearing connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107167165A (en) * 2017-06-20 2017-09-15 中国人民解放军63729部队 Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method
CN108318972A (en) * 2018-03-14 2018-07-24 北京宏源四方科技开发有限公司 A kind of optical fiber connection seal and pressure bearing connector

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