CN104713541A - Optical fiber loop winding method for reducing thermotropic Shupe effect of optical fiber gyro - Google Patents
Optical fiber loop winding method for reducing thermotropic Shupe effect of optical fiber gyro Download PDFInfo
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- CN104713541A CN104713541A CN201310675547.7A CN201310675547A CN104713541A CN 104713541 A CN104713541 A CN 104713541A CN 201310675547 A CN201310675547 A CN 201310675547A CN 104713541 A CN104713541 A CN 104713541A
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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Abstract
The invention belongs to an optical fiber winding technology, and relates to an optical fiber loop winding method for reducing the thermotropic Shupe effect of an optical fiber gyro. The optical fiber loop winding method for reducing the thermotropic Shupe effect of the optical fiber gyro comprises the following steps: 1, wrapping parts or the periphery integral body of a polarization maintaining optical fiber loop by a heat insulation optical fiber in the winding process of the polarization maintaining optical fiber loop; 2, adjusting the number of turns of the heat insulation fiber wound at each layer to realize the consistence of the number of turns of all layers of the polarization maintaining optical fiber loop; 3, curing the heat insulation optical fiber and the polarization maintaining optical fiber through an ultraviolet curing adhesive or a thermocuring adhesive; and 4, adjusting the winding mode, the number of layers and the number of turns of the heat insulation optical fiber according to the heat field distribution of the gyro. The method solves the Shuupe error problem by realizing the consistence of the number of turns of the polarization maintaining optical fiber at all layers through controlling the number of turns of the heat insulation optical fiber at all layers, improves the Shupe coefficient of the optical fiber loop through the wrapping use of the heat insulation optical loop, and improves the total temperature and vibration performance of the gyro.
Description
Technical field
The invention belongs to optical fiber winding technology, relate to a kind of optical fiber ring winding method reducing optical fibre gyro thermic Shupe effect.
Background technology
Fiber optic loop is the core devices of optical fibre gyro, has the function of sensitive angular, and the performance of fiber optic loop determines the performance of optical fibre gyro to a great extent, especially full temperature, vibration performance.
Fiber optic loop is the Sensitive Apparatus of optical fibre gyro, the phase error introduced when Shupe effect shows that the equidistant two sections of optical fiber of distance mid point are subject to identical temperature, stress disturbance can be cancelled out each other, do not affect gyro performance, Shupe coefficient is the important indicator weighing fiber optic loop opposing external disturbance ability.
Domestic and international technology is mainly through the improvement of winding method at present, the selection of solidification glue, the symmetric adjustment of fiber optic loop tail optical fiber improves the Shupe coefficient of fiber optic loop, these technology achieve the lifting of fiber optic loop Shupe coefficient to a certain extent, but cannot solve the intrinsic Shupe error of the inconsistent introducing of the inner polarization maintaining optical fibre number of turn of fiber optic loop.Summary of the invention
The invention provides a kind of optical fiber ring winding method thermal insulation optical fiber be combined with polarization maintaining optical fibre, can to realize the coiling number of turn of polarization maintaining optical fibre controlled by controlling the thermal insulation optical fiber number of turn, solve fiber optic loop and the bonding problem between sand spray framework simultaneously.
The invention provides a kind of optical fiber ring winding method, its coiling step is as follows:
1] according to fiber optic loop design needs, before polarization maintaining optical fibre coiling, see mark 2 with thermal insulation optical fiber one or more layers optical fiber of coiling on fiber optic loop skeleton periphery, provide thermal insulation protection to polarization-maintaining fiber coil inner peripheral surface;
2], before the coiling of ground floor polarization maintaining optical fibre starts, be close to ring flange coiling one circle or number circle thermal insulation optical fiber on the left of skeleton by thermal insulation optical fiber and see mark 3;
3] rightmost side thermal insulation optical fiber near mark 3 starts coiling polarization maintaining optical fibre, stops during the number of turn that coiling needs to ground floor;
4] near ground floor polarization maintaining optical fibre rightmost side coiling thermal insulation optical fiber, make thermal insulation optical fiber fill up this layer and see mark 4, ground floor coiling terminates;
5] extremely symmetrical according to four, ends of the earth symmetry waits and repeats around ring order the coiling that top-operation completes fiber optic loop;
6] in one or more layers thermal insulation optical fiber of fiber optic loop outer circumference face coiling, mark 6 is seen;
The invention provides a kind of optical fiber ring winding method reducing optical fibre gyro thermic Shupe effect, its special character is as follows:
1] adopt thermal insulation optical fiber and the mode of polarization maintaining optical fibre in conjunction with coiling, provide thermal insulation protection to polarization-maintaining fiber coil;
2] the coiling pattern of thermal insulation optical fiber is freely various, all can wrap up polarization maintaining optical fibre, also locally can wrap up polarization maintaining optical fibre;
3] ultra-violet curing glue can be adopted around ring process, heat-curable glue etc.;
4] provided by the inventionly four extremely symmetrical windings are applicable to around ring method, the symmetrical winding in the ends of the earth, the symmetrical windings of ten sextupoles etc.;
5] provided by the inventionly online gluing is applicable to around ring method, impregnation, the modes such as glue spraying;
6] provided by the inventionly the technology modes such as orthogonal coiling, helically coiling are applicable to around ring method;
7] skeleton that fiber optic loop coiling adopts can be full bound form, de-half of, de-below upper, entirely de-form;
8] according to the number of turn of adjustment every layer of thermal insulation optical fiber, freely can control the coiling number of turn of this layer of polarization maintaining optical fibre, better realize fiber optic loop coiling accurately symmetrical.
Tool of the present invention has the following advantages:
1, the present invention adopts thermal insulation optical fiber and polarization maintaining optical fibre in conjunction with winding method, outside polarization-maintaining fiber coil, provide thermal insulation protection, reduces because fiber optic loop internal and external temperature field changes the impact brought, and reduces the full temperature Shupe coefficient of fiber optic loop.
2, in actual fiber optic loop coiling production run, be difficult to ensure that every layer of coiling number of turn is identical, the present invention, by adjustment every layer of thermal insulation optical fiber coiling number of turn, realizes every layer of polarization maintaining optical fibre number of turn identical.
3, adopt the fiber optic loop of coiling of the present invention after overcuring, to make skeleton, thermal insulation optical fiber, polarization maintaining optical fibre, solidification glue becomes as a whole, ensure that fiber optic loop has good resistance to shock and full warm nature energy.
4, the present invention is by controlling about the every layer thermal insulation optical fiber number of turn, can realize every layer of polarization maintaining optical fibre number of turn consistent, solves Shupe error, coordinates the parcel of thermal insulation optical fiber to use simultaneously, promotes the Shupe coefficient of fiber optic loop further.
Accompanying drawing explanation
Fig. 1 is the suitable figure of row's fibre of fiber optic loop;
Fig. 2 is schematic diagram after fiber optic loop coiling completes;
Wherein Reference numeral is: 1-skeleton, 2-fiber optic loop inner layer heat-insulation optical fiber, thermal insulation optical fiber on the left of 3-, thermal insulation optical fiber on the right side of 4-, 5-polarization maintaining optical fibre, the outer thermal insulation optical fiber of 6-fiber optic loop.
Embodiment
The optical fiber ring winding method that the present invention reduces optical fibre gyro thermic Shupe effect adopts thermal insulation optical fiber with polarization maintaining optical fibre in conjunction with winding method; thermal insulation protection is provided in polarization-maintaining fiber coil surrounding; reduce because fiber optic loop internal and external temperature field changes the impact brought; reduce the full temperature Shupe coefficient of fiber optic loop, and by controlling the accurate control of left and right sides thermal insulation optical fiber number of turn realization to the polarization maintaining optical fibre number of turn.
Refer to Fig. 1, which show optical fiber arrangement schematic diagram when the present invention reduces the fiber optic loop coiling of optical fibre gyro thermic Shupe effect.The optical fiber ring winding method detailed process that the present invention reduces optical fibre gyro thermic Shupe effect is as follows:
Step 1: according to fiber optic loop coiling designing requirement, calculate mating coiling scheme and calculating the length (A, B ring) of inner layer heat-insulation optical fiber, left side thermal insulation optical fiber, right side thermal insulation optical fiber, outer thermal insulation optical fiber, polarization maintaining optical fibre respectively of thermal insulation optical fiber and polarization maintaining optical fibre, and carry out point fibre 6 totally points of fine rings according to length;
Step 2: first use inner layer heat-insulation optical fiber 2 points of fine rings in fiber optic loop inboard wall of skeleton coiling thermal insulation optical fiber, provide thermal insulation protection to see mark 2 to polarization-maintaining fiber coil inner peripheral surface;
Step 3: use thermal insulation optical fiber 3 points of fine rings in left side to be close to ring flange coiling thermal insulation optical fiber on the left of skeleton;
Step 4: use polarization maintaining optical fibre to divide fine ring A to start coiling polarization maintaining optical fibre near the rightmost side thermal insulation optical fiber of left side thermal insulation optical fiber 3, stop during the number of turn that coiling needs to ground floor;
Step 5: use right side thermal insulation optical fiber to divide fine ring to be close to thermal insulation optical fiber 4 on the right side of the coiling of ground floor polarization maintaining optical fibre end position, ground floor coiling terminates;
Step 6: according to concrete coiling scheme, repeats 3 above] ~ 5], complete and cover thermal insulation optical fiber in whole polarization maintaining optical fibre both sides, realize coupling coiling therebetween;
Step 7: use outer thermal insulation optical fiber 6 points of fine rings coiling thermal insulation optical fiber outside fiber optic loop, provide thermal insulation protection to polarization-maintaining fiber coil outer circumference surface, fiber optic loop winding process terminates;
Larger coiling difficulty is there is in the present invention in actual mechanical process, be embodied as being used alternatingly of 6 points of fine rings, if deal with improperly, thermal insulation optical fiber and polarization maintaining optical fibre contact position can be caused to occur flaw, destroying the fine symmetrical precision of fiber optic loop row, in order to solve this technical barrier, needing to transform fiber optic loop winding equipment, multiaxis is installed for fine device, ensures the smooth and easy alternately coiling of fiber optic loop;
In certain embodiment
Bottom thermal insulation optical fiber layer is 3 layers, and the polarization maintaining optical fibre every layer number of turn is 90 circles, and the left thermal insulation optical fiber of its side is 2 circles, and right thermal insulation optical fiber is also 2 circles, and top layer thermal insulation optical fiber layer is 2 layers.In addition, according to actual coiling needs, the number of plies of bottom and top layer thermal insulation optical fiber, and the number of turn of left and right thermal insulation optical fiber all can do further adjustment.
The winding method that the present invention adopts thermal insulation optical fiber to be combined with polarization maintaining optical fibre; thermal insulation protection is provided in polarization maintaining optical fibre surrounding; reduce the impact that change of temperature field is brought fiber optic loop, realize the polarization maintaining optical fibre every layer coiling number of turn consistent simultaneously, significantly reduce the full temperature Shupe coefficient of fiber optic loop.
Claims (10)
1. reduce an optical fiber ring winding method for optical fibre gyro thermic Shupe effect, it is characterized in that, coiling step is as follows:
1] first in one or more layers thermal insulation optical fiber of fiber optic loop backbone winding ring periphery coiling;
2] thermal insulation optical fiber on the left of polarization maintaining optical fibre every layer coiling initial one end coiling one circle or number circle;
3] near the thermal insulation optical fiber coiling polarization maintaining optical fibre that coiling is complete, when polarization maintaining optical fibre coiling stops after the number of turn needed;
4] use thermal insulation optical fiber near thermal insulation optical fiber on the right side of polarization maintaining optical fibre coiling one circle or number circle, complete ground floor coiling;
5] according to concrete coiling scheme, 2 are repeated] ~ 4], complete and cover thermal insulation optical fiber in whole polarization maintaining optical fibre both sides, realize coupling coiling therebetween;
6] in one or more layers thermal insulation optical fiber of polarization maintaining optical fibre outermost coiling.
2. the optical fiber ring winding method of reduction optical fibre gyro thermic Shupe effect according to claim 1, it is characterized in that, step 5] in, extremely symmetrical or the ends of the earth is symmetrical or cross winding scheme repeats 2 according to four] ~ 4], complete the covering of whole thermal insulation optical fiber to polarization maintaining optical fibre side.
3. the optical fiber ring winding method of reduction optical fibre gyro thermic Shupe effect according to claim 1, is characterized in that, described fiber optic loop skeleton is full bound form or de-half of or de-following or exoskeletal form.
4. the optical fiber ring winding method of reduction optical fibre gyro thermic Shupe effect according to claim 1, it is characterized in that, described thermal insulation optical fiber is single-mode fiber or the polarization maintaining optical fibre of same external diameter.
5. the optical fiber ring winding method of reduction optical fibre gyro thermic Shupe effect according to claim 1, is characterized in that, step 1] in, according to fiber optic loop designing requirement, coiling 1 ~ 4 layer of thermal insulation optical fiber.
6. the optical fiber ring winding method of reduction optical fibre gyro thermic Shupe effect according to claim 1, is characterized in that, step 2] in, according to fiber optic loop designing requirement, thermal insulation optical fiber on the left of coiling 1 ~ 3 circle.
7. the optical fiber ring winding method of reduction optical fibre gyro thermic Shupe effect according to claim 1, is characterized in that, step 4] in, according to fiber optic loop designing requirement, thermal insulation optical fiber on the right side of coiling 1 ~ 3 circle.
8. the optical fiber ring winding method of reduction optical fibre gyro thermic Shupe effect according to claim 1, is characterized in that, step 6] in, according to fiber optic loop designing requirement, coiling 1 ~ 4 layer of thermal insulation optical fiber.
9. the optical fiber ring winding method of reduction optical fibre gyro thermic Shupe effect according to claim 1, is characterized in that, winding process taked to cross online glue mode or impregnation mode or glue spraying mode.
10. the optical fiber ring winding method of reduction optical fibre gyro thermic Shupe effect according to claim 1, is characterized in that, use ultraviolet glue or hot glue around ring process glue.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441263A (en) * | 2016-08-31 | 2017-02-22 | 武汉长盈通光电技术有限公司 | Optical fiber loop framework capable of reducing polarization error of optical fiber gyroscope and method for winding optical fiber loop thereon |
| CN107576324A (en) * | 2017-09-29 | 2018-01-12 | 湖南航天机电设备与特种材料研究所 | A kind of optical fiber ring winding method, fibre-optical sensing device and optical fibre gyro |
| CN107643077A (en) * | 2017-08-15 | 2018-01-30 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of optical fiber ring winding method for lifting fiber-optic gyroscope light path reciprocity |
| CN108088466A (en) * | 2016-11-23 | 2018-05-29 | 北京自动化控制设备研究所 | A kind of fiber optic loop precise treatment winding method |
| CN109211220A (en) * | 2018-11-13 | 2019-01-15 | 陕西华燕航空仪表有限公司 | A kind of structure design of frame-type mini optical fibre gyro |
| CN109297479A (en) * | 2018-09-25 | 2019-02-01 | 重庆华渝电气集团有限公司 | A kind of fiber optic loop and its winding method measuring its Temperature Distribution in the operating condition |
| CN109737947A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工程大学 | A kind of four ring design optical fibre gyro fiber optic loop preparation methods |
| CN110926505A (en) * | 2019-12-25 | 2020-03-27 | 重庆华渝电气集团有限公司 | Optical fiber ring winding method for improving stress distribution symmetry of optical fiber ring |
| CN112504259A (en) * | 2020-12-18 | 2021-03-16 | 重庆华渝电气集团有限公司 | Optical fiber ring winding method with bidirectional temperature inhibition effect |
| CN112526000A (en) * | 2020-12-15 | 2021-03-19 | 北京北方车辆集团有限公司 | Optical fiber ring acoustic emission sensor and packaging method |
| CN115560740A (en) * | 2022-09-08 | 2023-01-03 | 南京开拓光电科技有限公司 | Preparation method of optical fiber ring |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4752043A (en) * | 1985-11-04 | 1988-06-21 | U.S. Holding Company, Inc. | Method of and apparatus for winding a precision optical fiber coil |
| US6141474A (en) * | 1997-07-18 | 2000-10-31 | Litton Systems, Inc. | Reinforcement of fiber optic gyroscope coils |
| US6496263B1 (en) * | 2000-07-27 | 2002-12-17 | Litton Systems, Inc. | System and method for providing an improved IFOG hub to coil thermal and mechanical slip interface |
| CN102116623A (en) * | 2010-01-05 | 2011-07-06 | 中国航天科技集团公司第九研究院第十六研究所 | Optical fiber ring winding method |
| CN102589541A (en) * | 2012-02-06 | 2012-07-18 | 苏州光环科技有限公司 | Optical fiber ring capable of eliminating influence of external environmental factors |
| CN202350792U (en) * | 2011-11-23 | 2012-07-25 | 武汉长盈通光电技术有限公司 | Optical fiber loop with good heat insulation property for optical fiber gyroscope |
| CN103018252A (en) * | 2012-11-21 | 2013-04-03 | 北京航空航天大学 | System and method for on-line monitoring and alarming of optical fiber loop rolling |
-
2013
- 2013-12-11 CN CN201310675547.7A patent/CN104713541A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4752043A (en) * | 1985-11-04 | 1988-06-21 | U.S. Holding Company, Inc. | Method of and apparatus for winding a precision optical fiber coil |
| US6141474A (en) * | 1997-07-18 | 2000-10-31 | Litton Systems, Inc. | Reinforcement of fiber optic gyroscope coils |
| US6496263B1 (en) * | 2000-07-27 | 2002-12-17 | Litton Systems, Inc. | System and method for providing an improved IFOG hub to coil thermal and mechanical slip interface |
| CN102116623A (en) * | 2010-01-05 | 2011-07-06 | 中国航天科技集团公司第九研究院第十六研究所 | Optical fiber ring winding method |
| CN202350792U (en) * | 2011-11-23 | 2012-07-25 | 武汉长盈通光电技术有限公司 | Optical fiber loop with good heat insulation property for optical fiber gyroscope |
| CN102589541A (en) * | 2012-02-06 | 2012-07-18 | 苏州光环科技有限公司 | Optical fiber ring capable of eliminating influence of external environmental factors |
| CN103018252A (en) * | 2012-11-21 | 2013-04-03 | 北京航空航天大学 | System and method for on-line monitoring and alarming of optical fiber loop rolling |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441263A (en) * | 2016-08-31 | 2017-02-22 | 武汉长盈通光电技术有限公司 | Optical fiber loop framework capable of reducing polarization error of optical fiber gyroscope and method for winding optical fiber loop thereon |
| CN108088466A (en) * | 2016-11-23 | 2018-05-29 | 北京自动化控制设备研究所 | A kind of fiber optic loop precise treatment winding method |
| CN108088466B (en) * | 2016-11-23 | 2021-07-13 | 北京自动化控制设备研究所 | Precision winding method for optical fiber ring |
| CN107643077A (en) * | 2017-08-15 | 2018-01-30 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of optical fiber ring winding method for lifting fiber-optic gyroscope light path reciprocity |
| CN107576324A (en) * | 2017-09-29 | 2018-01-12 | 湖南航天机电设备与特种材料研究所 | A kind of optical fiber ring winding method, fibre-optical sensing device and optical fibre gyro |
| CN109297479A (en) * | 2018-09-25 | 2019-02-01 | 重庆华渝电气集团有限公司 | A kind of fiber optic loop and its winding method measuring its Temperature Distribution in the operating condition |
| CN109297479B (en) * | 2018-09-25 | 2021-11-23 | 重庆华渝电气集团有限公司 | Optical fiber ring capable of measuring temperature distribution of optical fiber ring in working state and winding method thereof |
| CN109211220A (en) * | 2018-11-13 | 2019-01-15 | 陕西华燕航空仪表有限公司 | A kind of structure design of frame-type mini optical fibre gyro |
| CN109737947A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工程大学 | A kind of four ring design optical fibre gyro fiber optic loop preparation methods |
| CN110926505B (en) * | 2019-12-25 | 2023-02-21 | 重庆华渝电气集团有限公司 | Optical fiber ring winding method for improving stress distribution symmetry of optical fiber ring |
| CN110926505A (en) * | 2019-12-25 | 2020-03-27 | 重庆华渝电气集团有限公司 | Optical fiber ring winding method for improving stress distribution symmetry of optical fiber ring |
| CN112526000A (en) * | 2020-12-15 | 2021-03-19 | 北京北方车辆集团有限公司 | Optical fiber ring acoustic emission sensor and packaging method |
| CN112504259A (en) * | 2020-12-18 | 2021-03-16 | 重庆华渝电气集团有限公司 | Optical fiber ring winding method with bidirectional temperature inhibition effect |
| CN112504259B (en) * | 2020-12-18 | 2022-07-01 | 重庆华渝电气集团有限公司 | Optical fiber ring winding method with bidirectional temperature inhibition effect |
| CN115560740A (en) * | 2022-09-08 | 2023-01-03 | 南京开拓光电科技有限公司 | Preparation method of optical fiber ring |
| CN115560740B (en) * | 2022-09-08 | 2024-02-09 | 南京开拓光电科技有限公司 | Preparation method of optical fiber ring |
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