CN112033387A - Photoelectric separated subminiature optical fiber gyroscope - Google Patents
Photoelectric separated subminiature optical fiber gyroscope Download PDFInfo
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- CN112033387A CN112033387A CN202010763260.XA CN202010763260A CN112033387A CN 112033387 A CN112033387 A CN 112033387A CN 202010763260 A CN202010763260 A CN 202010763260A CN 112033387 A CN112033387 A CN 112033387A
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- gyroscope
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- optical fiber
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 4
- 230000010287 polarization Effects 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000009987 spinning Methods 0.000 description 6
- 230000005358 geomagnetic field Effects 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 241000237983 Trochidae Species 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
- G01C19/721—Details
- G01C19/722—Details of the mechanical construction
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
Abstract
The invention provides a photoelectric separated subminiature optical fiber gyroscope which can realize miniaturization, simple structure, small volume and strong interference resistance while performing photoelectric separation, and reduces the interference of an electronic circuit and realizes photoelectric separation by arranging a control circuit board externally and connecting the circuit and a light path by adopting a connector with a magnetic shielding cable; the 220m polarization-maintaining optical fiber ring is adopted, a compact and reasonable internal and external spatial layout structure of the gyroscope is designed, a heating device and a sensitive optical fiber ring are isolated, the influence of Shupe effect caused by temperature disturbance and Faraday effect caused by geomagnetism and electronic circuit interference on the precision of the gyroscope is reduced, the zero-bias stability is not more than 0.8 degree/h, the integral size of the gyroscope is phi 26 multiplied by 60(mm), and the device and a pin lead thereof can be seen and operated on the basis of not disassembling an optical path device, so that the gyroscope is convenient to produce and operate in batches, safe and reliable.
Description
Technical Field
The invention belongs to the technical field of fiber optic gyroscopes, and particularly relates to a photoelectric separated subminiature fiber optic gyroscope.
Background
The fiber optic gyroscope obtains angular velocity information by detecting the phase difference of double-beam interference signals caused by the Sagnac effect, has the characteristics of large dynamic range, strong environmental interference resistance, long service life, small volume, low cost and the like compared with the traditional electromechanical gyroscope, and is widely applied to the fields of military, civil use and the like.
In some special application fields, such as navigation control of aviation missiles and rocket missiles, the volume and weight of the gyro are severely limited, and a subminiature (the outer diameter is less than 50mm) optical fiber gyro needs to be selected for measuring the angular velocity of the carrier.
In addition, the sensitive optical fiber ring of the optical fiber gyroscope is greatly influenced by temperature and magnetic field interference, nonreciprocal phase shift caused by the shupe effect and the faraday effect cannot be distinguished from Sagnac phase shift caused by rotation, and a large offset error is generated to influence the gyroscope precision, so that the isolation of the heating device and the sensitive optical fiber ring and the realization of photoelectric separation become an important direction for the technical development of the miniaturized optical fiber gyroscope.
Disclosure of Invention
In view of this, the invention provides a photoelectric separated subminiature optical fiber gyroscope, which can realize miniaturization, simple structure, small volume and strong interference resistance while performing photoelectric separation.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention relates to a photoelectric separated subminiature optical fiber gyroscope, which comprises a circuit control board, a gyroscope shell, a Y waveguide, a coupler, a detector, a switching board of the detector and an SLD light source, wherein the circuit control board is arranged outside the gyroscope shell;
the top shell comprises an upper cap, a tubular shell and a lower cap;
the tubular shell comprises a shell and a circular truncated cone coaxial with the shell, and a cylindrical support and a polarization-maintaining optical fiber ring are respectively fixed at the upper end and the lower end of the circular truncated cone;
the Y waveguide, the coupler, the detector and the adapter plate thereof as well as the SLD light source are axially and circumferentially distributed on the cylindrical bracket; a disc is fixed at the uppermost end of the cylindrical support, a groove is formed in the circumference of the disc and used for fixing a Y waveguide and coupler input end tail fibers, three round holes are formed in the disc, one round hole is a fiber outlet hole of the Y waveguide and the coupler input end tail fibers, and the other two round holes are a wire outlet hole of a Y waveguide pin lead and a wire outlet hole of a detector and a patch panel thereof;
the upper cap and the lower cap are fixed at two ends of the tubular shell, a round hole is arranged in the center of the upper cap and is a wire outlet hole of an optical device pin lead in the gyro shell, and the optical device pin lead is connected with the circuit control board through a connector with a magnetic shielding cable.
Wherein, the gyro shell is made of magnetic shielding material.
Wherein, the upper cap can be detached at any time.
Wherein the tubular housing has a flange.
Wherein, the cylindrical bracket is fixed on the side wall of the shell at the other side of the round platform through a screw.
Wherein, the upper cap and the lower cap are fixed at the two ends of the tubular shell through threads.
Wherein, the length of the polarization-maintaining optical fiber ring is 220 m.
Wherein, the polarization maintaining optical fiber ring is fixed on the lower end surface of the circular truncated cone by gluing.
Has the advantages that:
according to the fiber optic gyroscope, the control circuit board is arranged externally, and the circuit is connected with the light path through the connector with the magnetic shielding cable, so that the interference of an electronic circuit is reduced, and the photoelectric separation is realized; the 220m polarization-maintaining optical fiber ring is adopted, a compact and reasonable internal and external spatial layout structure of the gyroscope is designed, a heating device and a sensitive optical fiber ring are isolated, the influence of Shupe effect caused by temperature disturbance and Faraday effect caused by geomagnetism and electronic circuit interference on the precision of the gyroscope is reduced, the zero-bias stability is not more than 0.8 degree/h, the integral size of the gyroscope is phi 26 multiplied by 60(mm), and the device and a pin lead thereof can be seen and operated on the basis of not disassembling an optical path device, so that the gyroscope is convenient to produce and operate in batches, safe and reliable.
Drawings
FIG. 1 is an external view of a spinning top according to the present invention;
FIG. 2 is a schematic diagram of a spinning top of the present invention;
fig. 3 is an internal structure view of the spinning top of the present invention.
The device comprises an a-round table, 1-an upper cap, 2-a tubular shell, 3-a lower cap, 4 discs, 5-a cylindrical support, 6-Y waveguides, 7-couplers, 8-a detector and a patch panel thereof, 9-an SLD light source and 10-a polarization-maintaining optical fiber ring.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
In the photoelectric gyroscope, the circuit control board is arranged outside the gyroscope shell and connected with the gyroscope shell through the connector with the magnetic shielding cable, and the circuit control board is separated through the light path circuit, so that the heat radiation and the electromagnetic interference of the gyroscope circuit control board to the light path are reduced; the rearrangement and simplified structure of the optical devices (Y waveguide 6, coupler 7, detector and its adapter plate 8, SLD light source 9 and polarization maintaining fiber 10) in the gyroscope casing reduces the external dimension of the gyroscope to phi 26 × 60(mm), which is as follows:
fig. 1 is an external view of a spinning top of the present invention, fig. 2 is an internal structure view of the spinning top of the present invention, and as shown in fig. 1 and fig. 2, a spinning top case of the present invention includes an upper cap 1, a tubular casing 2 with a flange, and a lower cap 3;
the tubular shell 2 is internally provided with a coaxial circular truncated cone a, the upper end and the lower end of the circular truncated cone a are respectively fixed with a cylindrical support 5 and a polarization-maintaining optical fiber ring 10, the polarization-maintaining optical fiber ring 10(220m long) is glued on the lower end face of the circular truncated cone a, and the cylindrical support 5 is fixed on the upper end face of the circular truncated cone a through screws; the Y waveguide 6, the coupler 7, the detector and the adapter plate 8 thereof and the SLD light source 9 are axially and circumferentially distributed on the cylindrical support 5; a disc 4 is fixed at the uppermost end of the cylindrical support 5, grooves are formed in the circumference of the disc 4 and used for fixing Y waveguide 6 and coupler 7 input end tail fibers, three round holes are formed in the disc 4, one round hole is a fiber outlet hole of the Y waveguide 6 and coupler 7 input end tail fibers, and the other two round holes are a wire outlet hole of a Y waveguide 7 pin lead and a wire outlet hole of a detector and a patch panel 8 thereof; the upper cap 1 and the lower cap 3 are fixed at two ends of the tubular shell 2 through threads, and a round hole is arranged in the center of the upper cap 1 and is used as a wire outlet hole of a pin lead of an optical device.
Furthermore, the gyro shell is made of a magnetic shielding material and used for isolating the interference influence of the geomagnetic field and the circuit device on the optical path signal of the optical fiber loop.
In the fiber-optic gyroscope, a magnetic shielding material shell and a 220m polarization-maintaining fiber ring are adopted to reduce the Faraday effect of the geomagnetic field on the ring; the polarization-maintaining optical fiber ring 10, the Y waveguide 6, the coupler 7, the detector and the adapter plate 8 thereof and the SLD light source 9 are distributed at two ends in the gyro shell through the inner circular table a and the cylindrical support 5 in the tubular shell 2, so that the heat radiation effect of the detector and the adapter plate 8 thereof and the SLD light source 9 on the optical fiber ring 10 is greatly reduced; the pin lead of the optical device penetrates through the central wire outlet hole of the upper cap 1 and is connected with an external gyro circuit control panel through a plug, the upper cap 1 can be detached at any time, and debugging of gyro parameters and fault positioning are facilitated.
The device has reasonable and compact spatial layout, reduces the occupied space volume of the device, reduces the overall size of the gyroscope, is convenient, safe and reliable in the gyroscope assembly and disassembly operation process, is visible, is favorable for testing and positioning the fault gyroscope, can meet the requirements of batch production and actual use of the fiber optic gyroscope, and has strong practicability.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A photoelectric separated microminiature optical fiber gyro comprises a circuit control board, a gyro shell, a Y waveguide (6), a coupler (7), a detector and a switching board (8) thereof and an SLD light source (9),
the circuit control board is arranged outside the gyroscope shell;
the gyroscope shell comprises an upper cap (1), a tubular shell (2) and a lower cap (3);
the tubular shell (2) comprises a shell and a circular truncated cone (a) coaxial with the shell, wherein the upper end and the lower end of the circular truncated cone (a) are respectively fixed with a cylindrical support (5) and a polarization-maintaining optical fiber ring (10);
the Y waveguide (6), the coupler (7), the detector and the adapter plate (8) thereof and the SLD light source (9) are axially and circumferentially distributed on the cylindrical support (5); a disc (4) is fixed at the uppermost end of the cylindrical support (5), grooves are formed in the circumference of the disc (4) and used for fixing Y waveguide (6) and coupler (7) input end tail fibers, three round holes are formed in the disc (4), one round hole is a fiber outlet hole of the Y waveguide (6) and the coupler (7) input end tail fibers, and the other two round holes are a wire outlet hole of a pin lead of the Y waveguide (7) and a wire outlet hole of a detector and a patch panel (8) of the detector;
the upper cap (1) and the lower cap (3) are fixed at two ends of the tubular shell (2), a round hole is arranged in the center of the upper cap (1) and is a wire outlet hole of an optical device pin lead in the gyro shell, and the optical device pin lead is connected with a circuit control board through a connector with a magnetic shielding cable.
2. The photodetachment, subminiature fiber optic gyroscope of claim 1, wherein the gyroscope housing is made of a magnetically shielding material.
3. The photodetachment, subminiature, fiber optic gyroscope of claim 1, wherein the upper cap (1) is readily removable.
4. The photodetachment, subminiature fiber optic gyroscope of claim 1, wherein the tubular housing (2) is flanged.
5. The optoelectric separating subminiature fiber-optic gyroscope of claim 1, wherein the cylindrical holder (5) is fixed to the upper end surface of the circular truncated cone (a) by a screw.
6. The optoelectric separating subminiature fiber-optic gyroscope of claim 1, wherein the upper cap (1) and the lower cap (3) are screwed to both ends of the tubular housing (2).
7. The optoelectric separating subminiature fiber optic gyroscope of claim 1, wherein the polarization maintaining fiber ring (10) has a length of 220 m.
8. The optoelectric separating subminiature fiber optic gyroscope of claim 1, wherein the polarization maintaining fiber ring (10) is fixed to the lower end surface of the circular truncated cone (a) by gluing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010763260.XA CN112033387A (en) | 2020-07-31 | 2020-07-31 | Photoelectric separated subminiature optical fiber gyroscope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010763260.XA CN112033387A (en) | 2020-07-31 | 2020-07-31 | Photoelectric separated subminiature optical fiber gyroscope |
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| CN112033387A true CN112033387A (en) | 2020-12-04 |
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| CN202010763260.XA Pending CN112033387A (en) | 2020-07-31 | 2020-07-31 | Photoelectric separated subminiature optical fiber gyroscope |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504282A (en) * | 2020-12-21 | 2021-03-16 | 北京控制工程研究所 | Single-shaft very high-precision micrometer sensor |
| CN113483746A (en) * | 2021-07-29 | 2021-10-08 | 中国船舶重工集团公司第七0七研究所 | Gyro multidimensional noise suppression method |
| CN114264295A (en) * | 2021-12-06 | 2022-04-01 | 河北汉光重工有限责任公司 | Small-sized biaxial optical fiber gyroscope beneficial to arrangement of optical fiber pigtails |
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|---|---|---|---|---|
| JPH026712A (en) * | 1988-06-20 | 1990-01-10 | Tokyo Keiki Co Ltd | Optical fiber gyroscope |
| CN101598554A (en) * | 2009-07-14 | 2009-12-09 | 北京航空航天大学 | A kind of fiber optic gyro framework of design according to sectorization |
| CN104655120A (en) * | 2013-11-21 | 2015-05-27 | 西安大昱光电科技有限公司 | Novel fiber optic gyroscope |
| CN108931239A (en) * | 2018-04-27 | 2018-12-04 | 华中光电技术研究所（中国船舶重工集团有限公司第七七研究所） | A kind of embedded microminiature single axis fiber gyro |
| CN109443339A (en) * | 2018-12-10 | 2019-03-08 | 河北汉光重工有限责任公司 | A kind of small-sized closed-loop fiber optic gyroscope of photoelectric integral type |
| CN109443341A (en) * | 2018-12-10 | 2019-03-08 | 河北汉光重工有限责任公司 | A kind of removable ultra-small volume photoelectric separating optical fibre gyro of circuit-line |
| CN109459009A (en) * | 2018-12-10 | 2019-03-12 | 河北汉光重工有限责任公司 | A kind of high-precision optical fiber gyro |
-
2020
- 2020-07-31 CN CN202010763260.XA patent/CN112033387A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH026712A (en) * | 1988-06-20 | 1990-01-10 | Tokyo Keiki Co Ltd | Optical fiber gyroscope |
| CN101598554A (en) * | 2009-07-14 | 2009-12-09 | 北京航空航天大学 | A kind of fiber optic gyro framework of design according to sectorization |
| CN104655120A (en) * | 2013-11-21 | 2015-05-27 | 西安大昱光电科技有限公司 | Novel fiber optic gyroscope |
| CN108931239A (en) * | 2018-04-27 | 2018-12-04 | 华中光电技术研究所（中国船舶重工集团有限公司第七七研究所） | A kind of embedded microminiature single axis fiber gyro |
| CN109443339A (en) * | 2018-12-10 | 2019-03-08 | 河北汉光重工有限责任公司 | A kind of small-sized closed-loop fiber optic gyroscope of photoelectric integral type |
| CN109443341A (en) * | 2018-12-10 | 2019-03-08 | 河北汉光重工有限责任公司 | A kind of removable ultra-small volume photoelectric separating optical fibre gyro of circuit-line |
| CN109459009A (en) * | 2018-12-10 | 2019-03-12 | 河北汉光重工有限责任公司 | A kind of high-precision optical fiber gyro |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504282A (en) * | 2020-12-21 | 2021-03-16 | 北京控制工程研究所 | Single-shaft very high-precision micrometer sensor |
| CN113483746A (en) * | 2021-07-29 | 2021-10-08 | 中国船舶重工集团公司第七0七研究所 | Gyro multidimensional noise suppression method |
| CN113483746B (en) * | 2021-07-29 | 2022-07-26 | 中国船舶重工集团公司第七0七研究所 | Gyro multidimensional noise suppression method |
| CN114264295A (en) * | 2021-12-06 | 2022-04-01 | 河北汉光重工有限责任公司 | Small-sized biaxial optical fiber gyroscope beneficial to arrangement of optical fiber pigtails |
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Application publication date: 20201204 |