CN206832259U - A kind of fiber optic loop for optical fibre gyro - Google Patents
A kind of fiber optic loop for optical fibre gyro Download PDFInfo
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- CN206832259U CN206832259U CN201720771972.XU CN201720771972U CN206832259U CN 206832259 U CN206832259 U CN 206832259U CN 201720771972 U CN201720771972 U CN 201720771972U CN 206832259 U CN206832259 U CN 206832259U
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- optical fiber
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- sensing ring
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- fibre gyro
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Abstract
The utility model provides a kind of fiber optic loop for optical fibre gyro, including optical fiber sensing ring, magnetic shield film, recuperation layer, magnetic shielding cover, the thermal insulation layer set gradually from inside to outside；Magnetic shielding cover includes magnetic screen seat and covers the magnetic screen lid on magnetic screen seat；Magnetic shielding cover is closed structure, and the tail optical fiber of optical fiber sensing ring sequentially passes through magnetic shield film, magnetic shielding cover and is connected afterwards with the Y waveguide tail optical fiber of optical fibre gyro system.Fiber optic loop of the present utility model for optical fibre gyro reduces the influence of temperature on fiber sensing ring, improves gyro temperature performance by the use of recuperation layer, thermal insulation layer in optical fiber sensing ring winding method and structure.Magnetic shield film and magnetic shielding cover, which are combined, forms double-deck magnet shielding structure, effectively reduces influence of the external magnetic field to optical fiber sensing ring, improves fiber optic loop temperature, the environmental suitability in magnetic field.
Description
Technical field
A kind of fiber optic loop for eliminating external environment and influenceing is the utility model is related to, belongs to optical measurement, optical fiber sensing technology
Field.Particularly a kind of design and manufacture of optical fibre gyro fiber optic loop.
Background technology
Optical fibre gyro is a kind of optical sensor that angular velocity measurement is realized based on SAGNAC effects, be after laser gyro it
Second generation optical gyroscope afterwards.In aircraft navigation, spacecraft guidance, satellite fix, automobile guiding, intelligent robot, astronomical prestige
The numerous areas such as remote mirror, aircraft ship navigation, armament systems control are applied.
Fiber optic loop directly determines optical fibre gyro complete machine as the performance such as optical fibre gyro core devices, its temperature, magnetic field
Performance.At present, for the influence of optical fibre gyro environmental factor, the symmetrical winding of fiber optic loop quadrupole, skeleton-free fiber loop, list are taken more
The layer technological means such as magnetic screen, reduce to a certain extent and reduce temperature, magnetic field factor to the performance impact of optical fibre gyro,
In, show in low-precision optical fiber gyro product it is preferable, but remain in high-precision optical fiber gyro application temperature bias drift it is big,
The problems such as magnetic field bias drift is big, temperature stress drift is big, hinders high precision gyro and engineering stage development should
With.
Fiber optic loop is very sensitive, and the coiling of fiber optic loop is very big to the performance impact of fibre optic gyroscope.The symmetrical winding of quadrupole by
In to Shupe error good inhibiting effects, it is widely used in the winding process of fiber optic loop.But existing fiber is sensitive
In ring structure, due to optical fiber ring skeleton influence or fibre diameter it is uneven the problem of, it will usually after the completion of causing coiling,
Two layers of optical fiber of outermost can not be completely around full situation, that is to say, that after complete the optical fiber number of plies of fiber optic loop can not meet 4 it is whole
Several times, so as to lose the superiority of the symmetrical winding of quadrupole, even than two, extremely symmetrical winding is also big for error signal, loses completely
The advantage of the symmetrical winding of quadrupole, thus it is poor to the rejection of Shupe errors.
Utility model content
Problem to be solved in the utility model is to be directed to above mentioned problem existing for existing fiber ring, there is provided one kind is used for optical fiber
The fiber optic loop of gyro.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of optical fiber for optical fibre gyro
Ring, it is characterised in that：Including the optical fiber sensing ring, magnetic shield film, recuperation layer, magnetic shielding cover, heat-insulated set gradually from inside to outside
Layer；The magnetic shielding cover includes magnetic screen seat and covers the magnetic screen lid on the magnetic screen seat；The magnetic shielding cover is close
Structure is closed, the tail optical fiber of the optical fiber sensing ring sequentially passes through the Y of the magnetic shield film, magnetic shielding cover afterwards with optical fibre gyro system
Waveguide tail optical fiber connects.
Because magnetic shielding cover and magnetic shield film form double-deck magnet shielding structure, eliminate and decayed on arrival optical fiber sensing ring
Magnetic field intensity, reduce influence of the magnetic field Faraday effect to optical fibre gyro zero bias., can by setting recuperation layer, thermal insulation layer
To absorb heat that is extraneous or coming from optical fibre gyro system, and cause thermograde decay so that reach on optical fiber sensing ring
Temperature change will substantially reduce, reduce and eliminate influence of the Shupe effects to optical fiber gyroscope precision.
Further, the optical fiber sensing ring (1) is obtained by the symmetrical winding coiling of quadrupole, and optical fiber sensing ring (1) includes
The optical fiber number of plies is 4 multiple, the equal length of each layer optical fiber of optical fiber sensing ring (1), and each layer optical fiber does not include space.
The temperature error for the fiber optic loop that the symmetrical winding coiling of quadrupole obtains is the unit gradient error of odd-level and even level
Intersection is subtracted each other.Due to each layer optical fiber of optical fiber sensing ring that, to each layer fiber lengths precisive, coiling obtains in the utility model
Equal length, and each layer optical fiber does not include space, fiber optic loop coiling is fully achieved the symmetrical coiling of quadrupole.Therefore, optical fiber
In sensing ring, every four layers of optical fiber forms a quadrapole, and a quadrapole of optical fiber sensing ring is complete four layers of fiber optic loop.One
Individual quadrapole includes first layer optical fiber, second layer optical fiber, third layer optical fiber, the 4th layer of optical fiber.And in same quadrapole, the 4th
The temperature error of layer optical fiber and the temperature error sum of first layer optical fiber and the temperature error of second layer optical fiber and third layer optical fiber
Temperature error sum it is equal, it is thereby achieved that minimum temperature error, the suppression work that can have been realized to Shupe errors
With.
Further, the optical fiber sensing ring is gradually reduced by the outside layer height of internal layer.The adjacent two layers of optical fiber sensing ring
In, the height of internal layer is more than the height of outer layer.Because the diameter of optical fiber sensing ring from inside to outside is increasing, therefore, by introversion
Outer optical fiber coiling one enclose needed for length it is increasing, therefore, by setting optical fiber sensing ring to be highly gradually reduced from inside to outside,
Facilitate ensuring that each layer fiber lengths of optical fiber sensing ring from inside to outside are identical and each layer optical fiber does not include space.The optical fiber is quick
Being shaped as the section of sense ring is trapezoidal.I.e. optical fiber sensing ring forms inclined-plane or domatic from inside to outside.
Further, first is provided with the magnetic shielding cover and passes through structure, the tail optical fiber of the optical fiber sensing ring passes through institute
State first to connect through the Y waveguide tail optical fiber of structure and optical fibre gyro system, described first passes through in structure in addition to the tail optical fiber
Position sealed.
Further, magnetic shield film is fixedly installed on the magnetic screen seat, magnetic shield film and the optical fiber sensing ring it
Between, solidified by uv-curable glue between the magnetic screen seat and magnetic shield film.
Further, the thermal insulation layer includes the mixing for the pitch and glass for being arranged at the aluminium foil in outside and being arranged at inner side
Thing.
By setting aluminium foil, most of heat can be reflected away, reduce the influence of temperature on fiber sensing ring.
Further, the recuperation layer is made up of heat-storing material, and the heat-storing material is phase-change material.
Further, the phase-change material is paraffin or calcium chloride hexahydrate.
Further, the material of the magnetic shield film is nano-crystal soft magnetic alloy or soft iron or permalloy.
The utility model has the advantages and positive effects of：Fiber optic loop of the present utility model for optical fibre gyro passes through
The use of recuperation layer, thermal insulation layer on optical fiber sensing ring winding method and structure, reduce the influence of temperature on fiber sensing ring, improve
Gyro temperature performance.Magnetic shield film and magnetic shielding cover, which are combined, forms double-deck magnet shielding structure, effectively reduces external magnetic field to light
The influence of fine sensing ring, improve fiber optic loop temperature, the environmental suitability in magnetic field；Meanwhile the utility model passes through to fiber optic loop bone
Frame is designed, and realizes the requirement of the symmetrical coiling of quadrupole, avoid in the symmetrical winding of quadrupole can not around it is full the problem of, realize pair
Shupe error good inhibiting effects.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, for
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is the dimensional structure diagram of the fiber optic loop of embodiment of the present utility model；
Fig. 2 is the vertical section schematic diagram of the fiber optic loop of embodiment of the present utility model；
Fig. 3 is the structural representation of a most quadrapole of inner side for optical fiber sensing ring of the present utility model；
Fig. 4 is the structural representation of a most quadrapole of inner side for optical fiber sensing ring of the present utility model；
Fig. 5 is the structural representation of the magnetic screen seat of embodiment of the present utility model；
Fig. 6 is the structural representation of the magnetic screen lid of embodiment of the present utility model；
In figure, 1, optical fiber sensing ring, 11, first layer optical fiber, 12, second layer optical fiber, 13, third layer optical fiber, 14, the 4th layers
Optical fiber, 2, magnetic shield film, 3, recuperation layer, 4, thermal insulation layer, 5, magnetic screen seat, 6, magnetic screen lid.
Embodiment
Below in conjunction with the accompanying drawing of the application, the technical scheme in the embodiment of the present application is clearly and completely described,
Obviously, described embodiment is only some embodiments of the present application, rather than whole embodiments.Based in the application
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the application protection.
Embodiment
As shown in Fig. 1-Fig. 6, fiber optic loop of the present utility model includes optical fiber sensing ring 1, magnetic shield film 2, recuperation layer 3, magnetic
4 each part of screening cover 6, magnetic screen seat 5 and thermal insulation layer.
As shown in Fig. 2 optical fiber sensing ring 1, magnetic shield film 2, recuperation layer 3, magnetic shielding cover, thermal insulation layer 4 are from inside to outside successively
Set；Magnetic shielding cover includes magnetic screen seat 5 and covers the magnetic screen lid 6 on magnetic screen seat 5；Magnetic shielding cover is closed structure,
The tail optical fiber of optical fiber sensing ring 1 is connected after sequentially passing through magnetic shield film 2, magnetic shielding cover with the Y waveguide tail optical fiber of optical fibre gyro system；
Recuperation layer 3 is made up of heat-storing material；The filling structure for filling heat-storing material is provided with magnetic shielding cover.It is of the present utility model
Novel optical fiber ring is characterised by realizing to influenceing optical fiber using modified optical fiber sensing ring winding method and multi-layer compound structure
The shielding of the ambient temperature field, magnetic field of ring performance.In embodiment of the present utility model, the thickness of the magnetic shield film 2 is 1-
5mm；The thickness of the recuperation layer 3 is 5-8mm；The thickness of the thermal insulation layer 4 is 2-5mm.
Optical fiber sensing ring 1 is obtained by the symmetrical winding coiling of quadrupole.The optical fiber number of plies that optical fiber sensing ring 1 includes is 4 multiple.
Optical fiber sensing ring 1 includes 4 × k layer optical fiber, k=1, and 2 ... ....1 each layer of fiber lengths of optical fiber sensing ring that coiling obtains are equal,
And each layer optical fiber does not include space.Each layer optical fiber does not include space and is meant that each layer optical fiber around one week (one enclose) of full circle,
Do not leave space.
Optical fiber sensing ring 1 is gradually reduced by the outside layer height of internal layer.In the adjacent two layers of optical fiber sensing ring 1, the height of internal layer
Height of the degree more than outer layer.Because the diameter of optical fiber sensing ring 1 from inside to outside is increasing, therefore, optical fiber from inside to outside around
Length needed for the circle of system one is increasing, therefore, by setting optical fiber sensing ring 1 to be highly gradually reduced from inside to outside, facilitates ensuring that
Each layer fiber lengths of optical fiber sensing ring 1 from inside to outside are identical and each layer optical fiber does not include space.The optical fiber sensing ring 1
Being shaped as section is trapezoidal.I.e. optical fiber sensing ring forms inclined-plane or domatic from inside to outside.
First is provided with magnetic shielding cover and passes through structure, the tail optical fiber of optical fiber sensing ring 1 passes through structure and optical fiber through first
The Y waveguide tail optical fiber connection of gyro system, first passes through the position in structure in addition to tail optical fiber to be sealed.
Magnetic shield film 2 is fixedly installed on magnetic screen seat 5, between magnetic shield film 2 and optical fiber sensing ring 1, the and of magnetic screen seat 5
Solidified between magnetic shield film 2 by uv-curable glue.
Recuperation layer 3 is made up of heat-storing material, and heat-storing material preferably uses phase-change material.Phase-change material preferably using paraffin or
Calcium chloride hexahydrate etc. has the material of heat accumulation function.
The material of magnetic shield film 2 is preferably nano-crystal soft magnetic alloy or soft iron or permalloy.It is provided with magnetic screen seat 5
Mounting flange, the screw mounting hole fiber optic loop being arranged in optical fibre gyro.
Optical fiber sensing ring 1 carries out coiling according to the symmetrical winding of quadrupole, and the length of every layer of optical fiber is controlled in winding process
System, ensures that the length of each layer optical fiber is identical, the axial section of optical fiber sensing ring 1 is trapezoidal.
Magnetic shield film 2 is wrapped in the outer layer of optical fiber sensing ring 1, forms an entirety.Using ultra-violet curing adhesive curing in magnetic
Shield on seat 5.Magnetic shield film 2 makes for the material such as nano-crystal soft magnetic alloy or soft iron or permalloy.
As shown in Figure 5, Figure 6, magnetic screen seat 5 and the two parts of magnetic screen lid 6 form a closed magnetic shielding cover, magnetic screen
Seat 5 and magnetic screen lid 6 are process using high-permeability material, such as 1J85, IJ50, IJ79.Filling is provided with magnetic screen seat 5
Structure, for carrying out the filling of phase-change material.Die ontology fine hole is provided with magnetic screen lid 6, there are mounting flange, even circumferential in middle position
Screw mounting hole is distributed, for realizing that installation of the fiber optic loop inside optical fibre gyro is fixed.Magnetic screen seat 5 and magnetic screen lid 6 are logical
The mode for crossing Laser seal welding forms an entirety.
Wrapped up in the outside of magnetic shielding cover using thermal insulation layer 4, thermal insulation layer 4 is adhered to magnetic cup by the self-adhesive of inner side
Cover on cover, the outer layer of thermal insulation layer 4 is the aluminium foil with high reflectance, and centre is the pitch with heat insulating function and glass mixture.
Thermal insulation layer 4 is the heat-insulating bituminous layer of self-adhesive type.
Fiber optic loop processing method of the present utility model comprises the following steps
(p) design the size of optical fiber sensing ring winding tool and be processed, the size of optical fiber sensing ring winding tool expires
The following condition of foot：The equal length of each layer optical fiber for the optical fiber sensing ring 1 that coiling obtains, and each layer optical fiber does not include space.
(a) the winding optical fiber sensing ring 1 on optical fiber sensing ring winding tool, optical fiber sensing ring 1, the coiling side of optical fiber are formed
Method is the symmetrical winding of quadrupole；
(b) magnetic shield film 2 is covered on optical fiber sensing ring 1, and magnetic shield film 2 is adhered on magnetic screen seat 5；
(c) magnetic screen lid 6 is covered on magnetic screen seat 5, the two is formed closed magnetic shielding cover；
(d) heat-storing material is injected by the filling structure on magnetic shielding cover in (fill in) magnetic shielding cover, forms accumulation of heat
Layer 3；
(e) thermal insulation layer 4 is bonded on magnetic shielding cover；
(f) the Y waveguide tail optical fiber of the tail optical fiber of optical fiber sensing ring 1 and optical fibre gyro system is connected.
Optical fiber sensing ring is made up of multiple quadrapoles, and each quadrapole is made up of four layers of optical fiber.Fig. 3, Fig. 4 are respectively optical fiber
The structural representation and schematic top plan view of the most four layers of optical fiber of a quadrapole of inner side of sensing ring 1.The optical fiber that coiling obtains is quick
Feel in ring 1, every four layers of optical fiber is a quadrapole.As shown in figure 4, will most inner side (near optical fiber sensing ring winding tool)
Each layer optical fiber from inside to outside of one quadrapole be referred to as first layer optical fiber 11, second layer optical fiber 12, third layer optical fiber 13,
4th layer of optical fiber 14.In step (p), before overall coiling, first determine first layer optical fiber 11 be wound on optical fiber sensing ring around
The number of turn in frock processed, second layer optical fiber are wound on first layer outer fiber, therefore are diametrically during first layer 11 coiling of optical fiber
For da circle coiling；It is diametrically da+2d to be during the second layer 12 coiling of optical fiber1Circle coiling；It is during third layer 13 coiling of optical fiber
It is diametrically da+2d1+2d2Circle coiling；It is diametrically da+2d to be during the 4th layer of 14 coiling of optical fiber1+2d2+2d3Circle coiling；
Wherein, da be optical fiber sensing ring winding tool diameter, d1、d2、d3、d4The respectively quadrapole of the most inner side of optical fiber sensing ring 1
First layer optical fiber 11, second layer optical fiber 12, third layer optical fiber 13, the diameter of the 4th layer of optical fiber 14.During outer layer optical fiber coiling, then according to
It is secondary analogize calculated., can due to a diameter of of each layer optical fiber, it is known that therefore, not including space using each layer optical fiber as target
The size of the optical fiber sensing ring winding tool needed to use is calculated by the total number of plies for the optical fiber sensing ring 1 for needing coiling.This
In utility model, after optical fiber sensing ring 1 completes, optical fiber sensing ring winding tool is removed from optical fiber sensing ring.
Optical fiber sensing ring 1 sequentially passes through the Y waveguide tail optical fiber of magnetic shield film 2, magnetic shielding cover afterwards with optical fibre gyro system and connected
Connect.
In this patent, first layer optical fiber 11, second layer optical fiber 12, third layer optical fiber 13, the 4th layer of optical fiber 14 are from inside to outside
Distribution.
The symmetrical winding of quadrupole is to use line wheel, around first layer optical fiber 11, to be wound followed by optical fiber sensing ring winding tool
With another line wheel around second layer optical fiber 12, then unroll to form third layer optical fiber 13 with this line wheel again, then first
Individual line wheel unrolls the 4th layer of optical fiber 14, with four layers for a cycle.The coiling of next cycle is consistent with a cycle, and four
Total error of extremely symmetrical winding is to be intersected to subtract each other with the unit gradient error of odd-level and even level, counteracts part by temperature
Error caused by difference.
The advantages of quadrupole symmetrical winding is that the rate of temperature change of relative central point part is equal, suppresses temperature drift
Effect becomes apparent from.
When the temperature of optical fibre gyro working environment changes, the nonreciprocal phase of thermic will be produced in optical fiber ring coil
Move, i.e. Shupe errors.The symmetrical winding of quadrupole is due to Shupe error good inhibiting effects, being widely used in fiber optic loop
In winding process.
Optical fiber sensing ring 1 carries out coiling according to the symmetrical winding of quadrupole, the length of every layer of optical fiber is carried out in winding process etc.
Length controls, and completes the coiling of fiber optic loop.Optical fiber sensing ring 1 is covered on optical fiber sensitivity after the reason that completes, by magnetic shield film 2
On ring 1, uv-curable glue, ultra-violet curing are applied.Ring body is adhered on magnetic screen seat 5 using uv-curable glue, installs magnetic screen lid additional
6, the tail optical fiber of optical fiber sensing ring 1 is drawn by die ontology fine hole on magnetic screen seat 5, using Laser seal welding technique by magnetic screen lid 6 and magnetic
Shielding seat 5 is welded as a whole, and forms closed magnetic shielding cover.Phase-change material is filled by the filling structure on magnetic screen seat 5
In in magnetic shielding cover, recuperation layer 3 is formed.Complete aforesaid operations magnetic screen seat 5 and the outer layer of magnetic screen lid 6, using self-adhesion every
Heated bitumen carries out enclosed package, forms thermal insulation layer 4, and the tail optical fiber of optical fiber sensing ring 1 is drawn out to outside thermal insulation layer 4, thus completes
The making of fiber optic loop.
For the fiber optic loop to complete, its optical fiber pigtail respectively with Y waveguide tail optical fiber welding in optical fibre gyro system, by light
Fine ring incoming fiber optic gyro light path system.Using screw by the upper flange plate screw hole of magnetic screen seat 5, fiber optic loop is fixedly mounted
In on optical fibre gyro.
1st, temperature conditionss
When optical fibre gyro works under temperature conditionss, the temperature field inside gyro and outside gyro, respectively with heat transfer and
The mode of heat radiation is to transmitting heat in fiber optic loop.
(1) for the heat of heat exchange pattern transmission, a part of heat is passed by the flange plate screw on magnetic screen seat 5
Magnetic screen seat 5 is delivered to, heat transmits to the direction of optical fiber sensing ring 1, after the heat absorption of recuperation layer 3 and thermograde decay,
A little heat transfer is on optical fiber sensing ring 1.
(2) heat transmitted for heat radiation mode, thermal insulation layer 4 is radiated first, due to high reflection aluminium foil on thermal insulation layer 4
Presence, most of heat is reflected away, after-heat successively by thermal insulation layer 4, magnetic screen seat 5, magnetic screen lid 6, recuperation layer
3rd, magnetic shield film 2 is delivered to optical fiber sensing ring 1, in transmittance process heat in thermal insulation layer 4, recuperation layer 3 is absorbed and thermograde
Decay, reaching the temperature change on optical fiber sensing ring 1 will substantially reduce, and reduce and eliminate Shupe effects to optical fiber gyroscope precision
Influence.
2nd, magnetic field condition
Optical fibre gyro (magnetic field is containing magnetic field of the earth and external magnetic field) when being worked under having magnetic field condition, external magnetic field will successively
The magnetic shielding cover and magnetic shield film 2 formed by magnetic screen seat 5 and magnetic screen lid 6 reaches optical fiber sensing ring 1, due to magnetic shielding cover
4 and magnetic shield film 2 form double-deck magnet shielding structure, eliminate and decayed the magnetic field intensity reached on optical fiber sensing ring 1, reduce
Influence of the magnetic field Faraday effect to optical fibre gyro zero bias.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to.
Embodiment of the present utility model is described in detail above, but the content is only of the present utility model preferable
Embodiment, it is impossible to be considered as being used to limit practical range of the present utility model.All impartial changes made according to the scope of the utility model
Change and improvement etc., all should still be belonged within this patent covering scope.
Claims (9)
- A kind of 1. fiber optic loop for optical fibre gyro, it is characterised in that：Including the optical fiber sensing ring set gradually from inside to outside (1), magnetic shield film (2), recuperation layer (3), magnetic shielding cover, thermal insulation layer (4)；The magnetic shielding cover includes magnetic screen seat (5) and lid Close the magnetic screen lid (6) on the magnetic screen seat (5)；The magnetic shielding cover is closed structure, the optical fiber sensing ring (1) Tail optical fiber is connected after sequentially passing through the magnetic shield film (2), magnetic shielding cover with the Y waveguide tail optical fiber of optical fibre gyro system.
- 2. the fiber optic loop according to claim 1 for optical fibre gyro, it is characterised in that：The optical fiber sensing ring (1) by The symmetrical winding coiling of quadrupole obtains, the optical fiber number of plies that optical fiber sensing ring (1) includes be 4 multiple, each layer of optical fiber sensing ring (1) The equal length of optical fiber, and each layer optical fiber does not include space.
- 3. the fiber optic loop according to claim 2 for optical fibre gyro, it is characterised in that：The optical fiber sensing ring (1) by The outside layer height of internal layer is gradually reduced.
- 4. the fiber optic loop for optical fibre gyro according to any one of claim 1-3, it is characterised in that：The magnetic screen First is provided with cover and passes through structure, the tail optical fiber of the optical fiber sensing ring (1) passes through structure and optical fibre gyro through described first The Y waveguide tail optical fiber connection of system, described first passes through the position in structure in addition to the tail optical fiber to be sealed.
- 5. the fiber optic loop for optical fibre gyro according to any one of claim 1-3, it is characterised in that：Magnetic shield film (2) it is fixedly installed on the magnetic screen seat (5), between the magnetic shield film (2) and optical fiber sensing ring (1), the magnetic screen Solidified between seat (5) and magnetic shield film (2) by uv-curable glue.
- 6. the fiber optic loop for optical fibre gyro according to any one of claim 1-3, it is characterised in that：The thermal insulation layer (4) include being arranged at the aluminium foil in outside and be arranged at the pitch of inner side and the mixture of glass.
- 7. the fiber optic loop for optical fibre gyro according to any one of claim 1-3, it is characterised in that：The recuperation layer (3) it is made up of heat-storing material, the heat-storing material is phase-change material.
- 8. the fiber optic loop according to claim 7 for optical fibre gyro, it is characterised in that：The phase-change material be paraffin or Calcium chloride hexahydrate.
- 9. the fiber optic loop for optical fibre gyro according to any one of claim 1-3, it is characterised in that：The magnetic screen The material of film (2) is nano-crystal soft magnetic alloy or soft iron or permalloy.
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| CN201720771972.XU CN206832259U (en) | 2017-06-29 | 2017-06-29 | A kind of fiber optic loop for optical fibre gyro |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186583A (en) * | 2018-10-31 | 2019-01-11 | 中国船舶重工集团公司第七0七研究所 | A kind of tail optical fiber glue-applying technique method improving optical fibre gyro ring performance |
| CN109737944A (en) * | 2019-03-01 | 2019-05-10 | 成都因赛泰科技有限责任公司 | A kind of MEMS gyroscope with embedded magnetic source |
-
2017
- 2017-06-29 CN CN201720771972.XU patent/CN206832259U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186583A (en) * | 2018-10-31 | 2019-01-11 | 中国船舶重工集团公司第七0七研究所 | A kind of tail optical fiber glue-applying technique method improving optical fibre gyro ring performance |
| CN109186583B (en) * | 2018-10-31 | 2022-06-10 | 中国船舶重工集团公司第七0七研究所 | Tail fiber gluing process method for improving ring performance of fiber-optic gyroscope |
| CN109737944A (en) * | 2019-03-01 | 2019-05-10 | 成都因赛泰科技有限责任公司 | A kind of MEMS gyroscope with embedded magnetic source |
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