CN107167165A - Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method - Google Patents
Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method Download PDFInfo
- Publication number
- CN107167165A CN107167165A CN201710467727.4A CN201710467727A CN107167165A CN 107167165 A CN107167165 A CN 107167165A CN 201710467727 A CN201710467727 A CN 201710467727A CN 107167165 A CN107167165 A CN 107167165A
- Authority
- CN
- China
- Prior art keywords
- fiber
- grating sensor
- optic grating
- optical cable
- hypogee
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001012 protector Effects 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 62
- 239000000835 fiber Substances 0.000 claims abstract description 60
- 230000004927 fusion Effects 0.000 claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 6
- 230000007306 turnover Effects 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 230000004224 protection Effects 0.000 claims description 53
- 239000013307 optical fiber Substances 0.000 claims description 41
- 238000003466 welding Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 230000015572 biosynthetic process Effects 0.000 claims description 16
- 230000002787 reinforcement Effects 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 210000000867 larynx Anatomy 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000002788 crimping Methods 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 230000002238 attenuated effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims 2
- 239000010410 layer Substances 0.000 claims 1
- 239000000741 silica gel Substances 0.000 claims 1
- 229910002027 silica gel Inorganic materials 0.000 claims 1
- 230000007774 longterm Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 235000011962 puddings Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/36—Forming the light into pulses
- G01D5/38—Forming the light into pulses by diffraction gratings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
The present invention discloses a kind of hypogee Fiber Bragg Grating Sensor Array and its protector and construction method.The strain testing array that Fiber Bragg Grating Sensor Array is made up of multiple TCH test channels；Each TCH test channel is composed in series by some 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；Armored optical cable is formed provided with armouring coating outside bare fibre, armored optical cable is crimped at crimp type terminal fixes and place aligned sleeves.Construction method is：Fiber-optic grating sensor is connected into passage by single mode single armored optical cable, and fiber-optic grating sensor, single mode single armored optical cable and fusion point are protected：Turnover is conveyed into job site, installation and debugging fiber-optic grating sensor, and lays passage.The present invention meets requirement of the fused fiber splice to environment, improves operating efficiency.
Description
Technical field
The present invention relates to a kind of hypogee Fiber Bragg Grating Sensor Array and its protector and construction method, belong to
Fiber-optic grating 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 consumption is small, transmission capacity is big, 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：One can improve measuring point position
The free degree, realizes and is laid without dead angle；Two be without reserved finishing operations space；Three be building structure after pouring 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
Weak, easy fracture will improve the environmental suitability and service life of fiber-optic grating sensor, be exactly primarily the ring for improving optical fiber
Border adaptability and long-term working stability.The factor of influence 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.In civil construction scene, the erection of bar construction, concreting and mechanical pudding process
In, the effect of steam and stress, this infrared optical fiber can be directly brought to embedded fiber-optic grating sensor and its optical fiber connecting passage
The optical-fibre channel connection of grating sensor is generally by the way of welding, and it is operated finely, in the extensive construction of civil engineering
There is great difficulty of construction in scene.
Accordingly, it is capable to it is no at extensive civil construction scene, especially to optical fiber light during vibratory concrete is consolidated and is solidified
Gate sensor and optical cable provide effective protection；It can realize that fiber-optic grating sensor lays progress synchronous with steel frame construction structure,
Without construction cross influence, realize and laid without dead angle fiber-optic grating sensor；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 invention provides a kind of hypogee Fiber Bragg Grating Sensor Array and its protector and construction method.
The Fiber Bragg Grating Sensor Array that the present invention is provided, is made up of multiple TCH test channels, and each TCH test channel is by some
Fiber-optic grating sensor is composed in series, and two adjacent fiber-optic grating sensor junctions are connected by fused fiber splice mode.Pass
Sensor two ends can transmit optical signal, and correspondingly each passage two ends can transmit optical signal.When test system works, broadband light
Source is each light in TCH test channel via coupler, program control photoswitch, distribution facility, main cable, single mode single armored optical cable
Fiber grating sensor provides wideband light source, and fiber-optic grating sensor carries out wavelength modulation and reflects back it from Yuan Lu, passes through
Coupler is coupled into fiber Bragg grating (FBG) demodulator, demodulate and be converted to be transferred to after electric signal control main frame carry out data 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 present invention provides a kind of hypogee Fiber Bragg Grating Sensor Array, and the center of fiber-optic grating sensor is one
Photo-lithographical formed bragg grating in the middle part of bare fibre, bare fibre, is welded solid after the metallized processing of bragg grating
Due in two fixing terminals, fixing terminal is connected through a screw thread with spring beam；Fence structure, each two are provided with the middle part of spring beam
Intersect 90 degree between fence structure；Rubber ring is put in spring beam two ends provided with capillary groove card, and integrally wears metal sleeve；Fixing end
Son is connected through a screw thread with socket post；The end for being socketed post is installed by crimp type terminal；The fibre core of fiber grating extension penetrates armouring light
Cable, armored optical cable crimps fixation at crimp type terminal, and binding site places aligned sleeves；The socket at fiber-optic grating sensor two ends
Post is by the cylinder of two kinds of structure compositions of pagoda shape and accurate thread.
Fiber-optic grating sensor fabrication scheme is：Photo-lithographical formed Bragg grating is sensitive as core in the middle part of bare fibre
Unit, to being welded in after itself and a bit of bare fibre progress metalized adjacent thereto in two fixing terminals, the two
Fixing terminal is threadedly coupled with spring beam in advance.Spring beam two ends have capillary groove, place and integrally wear gold again after rubber ring
Belong to sleeve pipe, then socket post is installed at its two ends, the other end of socket post installs crimp type terminal, the guarantor of 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 two 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 after metalized welds together with fixing terminal, drastically increases fiber grating sensitivity, together
When also improve long-term working stability.The spring beam fence structure at middle part can realize multidimensional stretching and bend, and possess it
Stretching, bending, the strain of three kinds of forms of distortion are sensed simultaneously.Metal sleeve and rubber ring on spring beam are set in, can be right
There is provided waterproof, protection against the tide, antidetonation, resistance to stress protection for its internal bare fibre and fiber grating.
The present invention provides the protection dress of a kind of hypogee Fiber Bragg Grating Sensor Array protector, wherein sensor
Put and be arranged on the outside of fiber-optic grating sensor, protector includes protection hard tube, nut, bearing, larynx hoop, 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, is carried out waterproof, shock insulation and is resisted
Radial compression is protected；Fiber-optic grating sensor two ends are symmetrically arranged with nut, bearing, larynx hoop, and fiber-optic grating sensor passes through spiral shell
Female and bearing is fixed with main reinforcement, and wherein bearing is welded on main reinforcement；Protecting hose is socketed on fiber-optic grating sensor two ends
Socket post on, all single mode single armored optical cables of connection sensor are included by larynx hoop banding, in protecting hose and its molten
Connected and sealed by the protector at fusion point between contact, 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 two ends, the accurate spiral shell of post is socketed
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, it is to avoid excessive fiber bending is caused
Attenuated optical signal and stress build up；
（2）Protecting hose is socketed on fiber-optic grating sensor socket post, and passes through larynx hoop banding；
（3）Bearing is fixed with main reinforcement by way of welding, and fiber-optic grating sensor is fixed by nut with bearing, using double
Nut is locking to the mode on top, and fiber-optic grating sensor is calibrated by adjusting nut position；
（4）Protection hard tube material, the full silica type waterproof packing material of its gap filling, to optical fiber are worn in the middle part of fiber-optic grating sensor
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：First of protection of optical fiber heat-shrink tube formation at fusion point, then wear metal
Tubule formation second protection, then protecting hose formation the 3rd road protection is worn, finally wear double end external fiber tube material formation the 4th
Road is protected.
The protector of single mode single armored optical cable refers to the protecting hose worn outside optical cable.
The fusion point protectiving scheme that the present invention is provided：
（1）Protecting hose is worn outside all single mode single armored optical cables, protecting hose has softness, and the feature of wall thickness is enhanced
Single mode single armored optical cable 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 wears metal using first of protection of optical fiber heat-shrink tube formation
Tubule formation second protection, wears protecting hose formation the 3rd road protection, wears double end external fiber tube material formation the 4th road protection,
So diametrically possesses splendid anti-vibration, shock resistance is anti-extrusion, water resistance；While metal thin tube and single mode single
Armored optical cable crimping is firm, and double end external fiber tube material is combined closely with protecting hose by clamping head, so in the axial direction with single mode list
Core armored optical cable possesses consistent anti-hauling ability.
Optical fiber fusion welding point protector is made a general survey of, radially anti-vibration is provided for bare fibre, shock resistance is anti-extrusion, waterproof
A series of protections, bare fibre increases again on the basis of single mode single armored optical cable in itself existing dual loose tube structure on axial direction
Add one layer of protecting hose to protect the pine set of 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 invention provides a kind of protector of hypogee Fiber Bragg Grating Sensor Array, its construction technology is such as
Under：
First, fiber-optic grating sensor is connected into passage by single mode single armored optical cable, and to fiber-optic grating sensor, it is single
Mould single armored optical cable and fusion point are protected in the way described above, then, and turnover is conveyed into job site, installation and debugging
Fiber-optic grating sensor, and lay passage.
Compared with prior art, beneficial effects of the present invention have：
（1）The metallized processing in fiber grating position of fiber-optic grating sensor is simultaneously consolidated by way of welding with fixing terminal
It is fixed, and be also to be welded and fixed between fiber-optic grating sensor bearing and main reinforcement, from optical fiber is drastically increased to dependent variable
Perception；
（2）Elastic beam structure possesses it while sensing stretching, bending, the adaptability to changes of three kinds of forms of distortion；
（3）The protectiving scheme of fiber-optic grating sensor is realized to be squeezed to fiber-optic grating sensor progress waterproof, shock insulation and anti-radial direction
Pressure protection；
（4）The protectiving scheme of optical fiber and fusion point, diametrically, anti-vibration, shock resistance, anti-extrusion, waterproof is provided for optical fiber
A series of protections；In the axial direction, by triple loose tube structures, single mode single armored optical cable is enable to possess splendid anti-traction
Power；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 connection of TCH test channel, fused fiber splice, product the procedure arrangement such as to be protected to clean outside the venue
Netfield is carried out, and meets requirement of the fused fiber splice to environment, while operating efficiency is improved, and is also significantly improved and is applied
The operation of workman person is ecological.
Brief description of the drawings
Fig. 1 is test system schematic diagram of the present invention；
Fig. 2 is fiber-optic grating sensor structural representation of the present invention；
Fig. 3 is elastic beam structure schematic diagram of the present invention；
Fig. 4 is fiber-optic grating sensor of the present invention and its protector schematic diagram；
Fig. 5 is optical fiber of the present invention and its fusion point protector schematic diagram；
Fig. 6 is scheme of installation of the present invention；
In figure, 1. Fiber Bragg Grating Sensor Arrays, 1-1. fiber-optic grating sensors, 1-1-1. crimp type terminals, 1-1-2. bare fibres,
1-1-3. is socketed post, 1-1-4. rubber rings, 1-1-5. spring beams, 1-1-6. metal sleeves, 1-1-7. fixing terminals, 1-1-8. cloth
Glug fiber grating .1-1-9:Armouring coating .1-1-10:Aligned sleeves, 1-2. larynx hoops, 1-3. nuts, 1-4. bearings, 1-5.
Hard tube is protected, 2. cable protection devices, 2-1. armored optical cables, 2-2. protecting hoses, 3. optical fiber fusion welding point protectors, 3-1. compels
Tight head, 3-2. double end external fiber tube materials, 3-3. optical fiber heat-shrink tubes, 3-4. metal thin tubes, 4. distribution facilities, 5. backbone optical cables, 6. journeys
Control photoswitch, 7. wideband light sources, 8. couplers, 9. fiber Bragg grating (FBG) demodulators, 10. control main frames, 11. main reinforcements.
Embodiment
The present invention 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 logical by multiple tests
The Fiber Bragg Grating Sensor Array for hypogee of road composition（1）.Wideband light source（7）Through overcoupling device after generation（8）, journey
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.TCH test channel is first
Tail two ends can receive wideband light source（7）, subsequent each fiber-optic grating sensor（1-1）Generate specific wavelength modulated optical signal simultaneously
Reflected back along former road.Optical signal passes through single mode single armored optical cable（2-1）, distribution facility（4）, backbone optical cable（5）Reach journey
Control photoswitch（6）, the program control controlled main frame of photoswitch（10）Control open correspondence transmission channel, subsequent light letter in specific time sequence
Number pass through coupler（8）Reach fiber Bragg grating (FBG) demodulator（9）, it is demodulated and be converted into electric signal, and by designated communication agreement
It is transferred to control main frame（10）.Control main frame（10）Data analyzed, differentiated, being stored etc. with a series of processing operation, it is complete
The monitoring of the structural health conditions of paired 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, the real time environment temperature of passage where for measuring carries out temperature compensation calibration using the temperature measured to dependent variable.
As shown in Figure 2,3, fiber-optic grating sensor（1-1）Center be bare fibre（1-1-2）, bare fibre middle part is passed 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 two 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 two 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 install 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 allows it axially to draw
Stretch, radially bending and pivoting so that fiber-optic grating sensor（1-1）Possess while sensing stretching, bending, three kinds of distortion
The strain of form.
As shown in Fig. 2 ~ 4, fiber-optic grating sensor（1-1）Main body two ends are respectively equipped with socket post（1-1-3）, it is socketed post
（1-1-3）It is that, 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）
Mode to top fixes fiber-optic grating sensor（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）, it is to avoid attenuated optical signal and stress build up that excessive fiber bending is caused.Protection is soft
Pipe（2-2）It is socketed on fiber-optic grating sensor（1-1）The socket post at two ends（1-1-3）On, and pass through larynx hoop（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 is used
Optical fiber heat-shrink tube（3-3）Formed after first of protection, wear metal thin tube（3-4）Second protection is formed, protecting hose is worn
（2-2）The protection of the 3rd road is formed, double end external fiber tube material is finally worn（3-2）Form the protection of the 4th road.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 is 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, is 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 invention provides the construction method of the protector of hypogee Fiber Bragg Grating Sensor Array：First, will
Fiber-optic grating sensor connects into passage by single mode single armored optical cable, and to fiber-optic grating sensor, single mode single armouring
Optical cable and fusion point are protected：Finally, turnover is conveyed into job site, installation and debugging fiber-optic grating sensor, and lays
Passage.
Further, it is to the method that fiber-optic grating sensor, single mode single armored optical cable are protected：
（1）Aligned sleeves are placed in single mode single armored optical cable and crimp type terminal binding site, it is to avoid excessive fiber bending is caused
Attenuated optical signal and stress build up；
（2）Protecting hose is socketed on fiber-optic grating sensor socket post, and passes through larynx hoop banding；
（3）Bearing is fixed with main reinforcement by way of welding, and fiber-optic grating sensor is fixed by nut with bearing, using double
Nut is locking to the mode on top, and fiber-optic grating sensor is calibrated by adjusting nut position；
（4）Protection hard tube material, the full silica type waterproof packing material of its gap filling, to optical fiber are worn in the middle part of fiber-optic grating sensor
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 wears metal thin using first of protection of optical fiber heat-shrink tube formation
Pipe formation second protection, wears protecting hose formation the 3rd road protection, wears double end external fiber tube material formation the 4th road protection；Together
When metal thin tube crimped firmly with single mode single armored optical cable, double end external fiber tube material is combined closely with protecting hose by clamping head,
So possesses consistent anti-hauling ability with single mode single armored optical cable in the axial direction.
Claims (9)
1. a kind of hypogee Fiber Bragg Grating Sensor Array, it is characterised in that：By being used for that multiple TCH test channels are constituted
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 two ends can transmit optical signal；
Fiber-optic grating sensor（1-1）Center be 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 two ends are provided with capillary groove, and spring beam is located at metal sleeve（1-1-6）Outside, in gold
Category sleeve pipe two 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 two 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 two ends（1-1-3）It is by two kinds of structure compositions of pagoda shape and accurate thread
Cylinder.
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. hypogee Fiber Bragg Grating Sensor Array according to claim 1, it is characterised in that：Prague light
The two ends of fine grating and fixing terminal（1-1-7）Fixed by way of welding.
4. a kind of protector of the hypogee Fiber Bragg Grating Sensor Array described in any one of claim 1 ~ 3, it is special
Levy and be：The protector is arranged on fiber-optic grating sensor（1-1）Outside, protector includes protection hard tube, nut, branch
Seat, larynx hoop, 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 two ends are symmetrically arranged with nut, bearing, larynx hoop, 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 two ends（1-1-3）On, pass through larynx hoop（1-2）Banding；
Fiber-optic grating sensor（1-1）The socket post at two 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. 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, optical fiber heat-shrink tube is followed successively by from inside to outside provided with four layers of protective layer, protective layer on the outside of fusion point（3-3）, metal it is thin
Pipe（3-4）, protecting hose（2-2）With double end external fiber tube material（3-2）.
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.
7. a kind of construction of the protector of the hypogee Fiber Bragg Grating Sensor Array described in any one of claim 4 ~ 6
Method, it is characterised in that：
First, fiber-optic grating sensor is connected into passage by single mode single armored optical cable, and to fiber-optic grating sensor, list
Mould single armored optical cable and fusion point are protected：Finally, turnover is conveyed into job site, installation and debugging optical fiber grating sensing
Device, and lay passage.
8. the construction method of the protector of hypogee Fiber Bragg Grating Sensor Array according to claim 7, its
It is characterised by：It is to the method that fiber-optic grating sensor, single mode single armored optical cable are protected：
（1）Aligned sleeves are placed in single mode single armored optical cable and crimp type terminal binding site, it is to avoid excessive fiber bending is caused
Attenuated optical signal and stress build up；
（2）Protecting hose is socketed on fiber-optic grating sensor socket post, and passes through larynx hoop banding；
（3）Bearing is fixed with main reinforcement by way of welding, and fiber-optic grating sensor is fixed by nut with bearing, using double
Nut is locking to the mode on top, and fiber-optic grating sensor is calibrated by adjusting nut position；
（4）Protection hard tube material, the full silica type waterproof packing material of its gap filling, to optical fiber are worn in the middle part of fiber-optic grating sensor
Grating sensor carries out waterproof, shock insulation and the protection of anti-radial compression.
9. the construction method of the protector of hypogee Fiber Bragg Grating Sensor Array according to claim 7, its
It is characterised by：The method protected fusion point is：
Optical fiber is docked by way of welding, and optical fiber fusion welding point wears metal thin using first of protection of optical fiber heat-shrink tube formation
Pipe formation second protection, wears protecting hose formation the 3rd road protection, wears double end external fiber tube material formation the 4th road protection；Together
When metal thin tube crimped firmly with single mode single armored optical cable, double end external fiber tube material is combined closely with protecting hose by clamping head,
So possesses consistent anti-hauling ability with single mode single armored optical cable in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710467727.4A CN107167165A (en) | 2017-06-20 | 2017-06-20 | Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710467727.4A CN107167165A (en) | 2017-06-20 | 2017-06-20 | Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107167165A true CN107167165A (en) | 2017-09-15 |
Family
ID=59818959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710467727.4A Pending CN107167165A (en) | 2017-06-20 | 2017-06-20 | Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107167165A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834527A (en) * | 2021-09-18 | 2021-12-24 | 重庆大学 | Crimping type power semiconductor structure and internal pressure online measurement method thereof |
| CN114323252A (en) * | 2022-03-16 | 2022-04-12 | 山东省科学院激光研究所 | Protection device of fiber grating detector |
| CN114396999A (en) * | 2021-12-09 | 2022-04-26 | 武汉工程大学 | Pressure sensor, pressure monitoring assembly and weighing device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787676A (en) * | 2010-02-08 | 2010-07-28 | 法尔胜集团有限公司 | Method for assembling cable built-in fiber bragg grating strain transducer |
| CN201796157U (en) * | 2010-07-12 | 2011-04-13 | 西北工业大学 | Multi-fiber grating-based bandwidth tunable filter of multi-wavelength path |
| CN102221332A (en) * | 2011-04-01 | 2011-10-19 | 西安科技大学 | Fiber grating multi-point sensing device for unconsolidated strata as well as monitoring system and method |
| CN202133378U (en) * | 2011-05-12 | 2012-02-01 | 北京基康科技有限公司 | Fiber grating strain sensor |
| CN102865827A (en) * | 2012-06-29 | 2013-01-09 | 杭州珏光物联网科技有限公司 | Fiber Bragg grating strain sensor |
| CN202709999U (en) * | 2012-06-28 | 2013-01-30 | 韦春龙 | Optical fiber grating strain sensor having integrated strain unit |
| CN103759667A (en) * | 2014-01-14 | 2014-04-30 | 南京航空航天大学 | Embedded type fiber bragg grating strain transducer for surface grooved-type road and manufacturing method for embedded type fiber bragg grating strain transducer |
| CN204479035U (en) * | 2015-03-17 | 2015-07-15 | 宁波圣丰信息科技有限公司 | A kind of bridge structure safe monitoring fiber Bragg grating strain sensor |
| CN204555928U (en) * | 2015-04-22 | 2015-08-12 | 杭州聚华光电科技有限公司 | A kind of body structure surface formula fiber Bragg grating strain sensor |
| CN105091757A (en) * | 2015-09-22 | 2015-11-25 | 中国科学院半导体研究所 | Articulated optical fiber deep part displacement sensor and sensor array |
| CN206919907U (en) * | 2017-06-20 | 2018-01-23 | 中国人民解放军63729部队 | Hypogee Fiber Bragg Grating Sensor Array and its protector |
-
2017
- 2017-06-20 CN CN201710467727.4A patent/CN107167165A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787676A (en) * | 2010-02-08 | 2010-07-28 | 法尔胜集团有限公司 | Method for assembling cable built-in fiber bragg grating strain transducer |
| CN201796157U (en) * | 2010-07-12 | 2011-04-13 | 西北工业大学 | Multi-fiber grating-based bandwidth tunable filter of multi-wavelength path |
| CN102221332A (en) * | 2011-04-01 | 2011-10-19 | 西安科技大学 | Fiber grating multi-point sensing device for unconsolidated strata as well as monitoring system and method |
| CN202133378U (en) * | 2011-05-12 | 2012-02-01 | 北京基康科技有限公司 | Fiber grating strain sensor |
| CN202709999U (en) * | 2012-06-28 | 2013-01-30 | 韦春龙 | Optical fiber grating strain sensor having integrated strain unit |
| CN102865827A (en) * | 2012-06-29 | 2013-01-09 | 杭州珏光物联网科技有限公司 | Fiber Bragg grating strain sensor |
| CN103759667A (en) * | 2014-01-14 | 2014-04-30 | 南京航空航天大学 | Embedded type fiber bragg grating strain transducer for surface grooved-type road and manufacturing method for embedded type fiber bragg grating strain transducer |
| CN204479035U (en) * | 2015-03-17 | 2015-07-15 | 宁波圣丰信息科技有限公司 | A kind of bridge structure safe monitoring fiber Bragg grating strain sensor |
| CN204555928U (en) * | 2015-04-22 | 2015-08-12 | 杭州聚华光电科技有限公司 | A kind of body structure surface formula fiber Bragg grating strain sensor |
| CN105091757A (en) * | 2015-09-22 | 2015-11-25 | 中国科学院半导体研究所 | Articulated optical fiber deep part displacement sensor and sensor array |
| CN206919907U (en) * | 2017-06-20 | 2018-01-23 | 中国人民解放军63729部队 | Hypogee Fiber Bragg Grating Sensor Array and its protector |
Non-Patent Citations (1)
| Title |
|---|
| 周祖德: "机械系统光纤光栅分布动态监测与诊断的现状与发展", <<机械工程学报>> * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834527A (en) * | 2021-09-18 | 2021-12-24 | 重庆大学 | Crimping type power semiconductor structure and internal pressure online measurement method thereof |
| CN114396999A (en) * | 2021-12-09 | 2022-04-26 | 武汉工程大学 | Pressure sensor, pressure monitoring assembly and weighing device |
| CN114323252A (en) * | 2022-03-16 | 2022-04-12 | 山东省科学院激光研究所 | Protection device of fiber grating detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107167165A (en) | Hypogee Fiber Bragg Grating Sensor Array and its protector and construction method | |
| CN202133378U (en) | Fiber grating strain sensor | |
| CN101858796B (en) | Seawater temperature profile measurement method based on fiber grating principle | |
| CN101738170B (en) | Distributed fiber sensor for large deformation measurement | |
| CN209470718U (en) | A kind of fibre system being preset in shield tunnel | |
| JP6293035B2 (en) | cable | |
| CN103292721B (en) | A kind of fiber grating wide range strain transducer of monitoring prestress steel twist line strain | |
| CN206919907U (en) | Hypogee Fiber Bragg Grating Sensor Array and its protector | |
| CN105928468A (en) | Fiber grating strain sensor and manufacturing method thereof | |
| CN105442758B (en) | Wide range FRP embeds steel wire composite fiber intellectual rib and preparation method thereof | |
| CN107218900B (en) | A kind of PCCP strain testing method based on fiber grating strain detection technology | |
| CN106949996A (en) | Optical fiber grating intelligent steel strand and its monitoring system and scaling method | |
| CN107121158A (en) | A kind of internal enclosed cantilever beam fiber-optic grating sensor | |
| CN202066479U (en) | Linear fiber bragg grating displacement meter | |
| CN105675167A (en) | Fiber monitoring through device for oil-immersed transformer, and preparation method for fiber monitoring through device | |
| CN201322604Y (en) | Full-scale distributed type and local high-precision collinear fibre optic sensing observation system | |
| CN209432073U (en) | Measure the coaxial multiple casing packaged fiber grating sensor of long gauge length of tension and compression strain | |
| CN102607422A (en) | Linear fiber bragg grating displacement meter | |
| CN201155966Y (en) | Optical fibre grating displacement meter | |
| CN104406536A (en) | Device and method for testing deflection distribution of pile-net structured geogrid | |
| CN102981230B (en) | High-sensitivity wide-range stress-strain sensing optical cable and monitoring method thereof | |
| CN201844847U (en) | Waterproof sensor packaging device | |
| CN203310383U (en) | Highly endurable no-binder packaging fiber grating strain sensor | |
| CN206891393U (en) | A kind of anti-buckling fiber Bragg grating strain sensor | |
| CN104457604B (en) | Asphalt pavement site radial strain test sensor based on optical fiber sensing technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20231117 |