CN102661847B - A kind of optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear - Google Patents
A kind of optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear Download PDFInfo
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- CN102661847B CN102661847B CN201210154948.3A CN201210154948A CN102661847B CN 102661847 B CN102661847 B CN 102661847B CN 201210154948 A CN201210154948 A CN 201210154948A CN 102661847 B CN102661847 B CN 102661847B
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Abstract
A kind of optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear, the both ends of the surface of fiber optic loop respectively add a pad processed by special material, be placed in the ring shaped slot of pedestal, pressing plate is connected by three M3 screws and pedestal, lid is fixed on pedestal with four M3 screws, pedestal and lid have the aperture of a Φ 2mm respectively, and the joint of base and cover adopts V-type annular groove, four M3 screw fastenings.
Description
Technical field
The present invention relates to a kind of optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear.
Background technology
High-precision optical fiber gyro is the important component part of inertial navigation technology, and the quality of its performance directly determines the final precision of inertial navigation.At present, high-precision optical fiber gyro performance under temperature match curing conditions cannot meet system requirements, and tracing sth. to its source is that optical fiber ring performance is unstable.Because fiber optic loop is more responsive to temperature variation, the precision limiting optical fibre gyro improves, improve the precision and stability of optical fibre gyro, first the impact of temperature on fiber ring will be reduced exactly to greatest extent, reduce temperature impact to start with from two aspects, one is carry out temperature control to fiber optic loop or optical fibre gyro entirety, two is technique for coiling and the structural design of improving fiber optic loop, good provision for thermal insulation is taked to carry out thermoshield to optical fiber loop, the variation of ambient temperature speed residing for fiber optic loop is made to be less than 1 DEG C/min, thus reduce border thermograde to the impact of fiber optic loop.To the first scheme, owing to adding temperature-controlling system, by serviceable life of optical fibre gyro and reliability producing larger impact, generally can only be used in some specific occasions, being not suitable for inertial navigation and using; First scheme can tackle the problem at its root, and finally realizes the application of high-precision optical fiber gyro through engineering approaches, and the practical application of internal optical fiber gyro adopts substantially is first scheme.
Because the performance parameter of fiber optic loop is very responsive to temperature variation, when environment temperature when measuring its parameter need use with reality, state of temperature conforms to, for this reason, devise environment temperature reduction gear, variation of ambient temperature during use actual in analog optical fiber ring, environment temperature when making optical fiber ring performance parameter measurement and practical application are consistent substantially.This device is when extraneous rate temperature change is less than 3 DEG C/min, and its internal temperature rate of change is less than 0.7 DEG C/min, can meet high-precision optical fiber gyro fiber optic loop performance parameter and measure needs.
Present stage is when carrying out optical fiber ring performance parameter measurement, realized by the method for control temperature control box to the adjustment of environment temperature residing for fiber optic loop, the temperature of its temperature-controlled cabinet display and the environment temperature residing for fiber optic loop have difference, and rate temperature change controls difficulty, inconvenient operation, measurement data is repeated and stability is all poor, and fiber optic loop and actual working environment situation differ greatly, and data reliability is poor.The present invention is to solve optical fibre gyro fiber optic loop performance parameter measures ambient temperature deceleration problem of modelling, making environment temperature during optical fiber ring performance parameter measurement conform to real use state.
Summary of the invention
An object of the present invention is achieved through the following technical solutions:
A kind of optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear, it is characterized in that, the both ends of the surface of fiber optic loop respectively add a pad processed by special material, be placed in the ring shaped slot of pedestal, pressing plate is connected by three M3 screws and pedestal, and lid is fixed on pedestal with four M3 screws, and pedestal and lid have the aperture of a Φ 2mm respectively, the joint of base and cover adopts V-type annular groove, four M3 screw fastenings.
This device based on be of a size of external diameter 103mm, internal diameter 82mm, thickness 12mm fiber optic loop and design, adopt 6061-T651 aluminum alloy materials, overall physical dimensions is Φ 125mm × 33.5mm.The main mechanical environment of tested optical fiber ring is shock and vibration, improves structural rigidity and resonance frequency that mechanical environment adaptability needs to consider device.The volume of apparatus of the present invention is little, lightweight, and structure is simple, and number of parts is few, and each several part adopts cross recessed countersunk head sscrew to connect, solid and reliable, has the ability of stronger shock resistance and anti-accelerated motion.
The thermal design of apparatus of the present invention, fundamental purpose is the good heat radiating reducing the thermograde of fiber optic loop, adjustment direction, temperature field and ensure photoelectric device.For solving the good heat insulation and insulation of tested optical fiber circulation pattern, structure adopts the design of double-deck air gap, bonding part employing V-type slot fit.For reducing optical, electrical device self-heating to the impact of device internal temperature field, the light path in system and circuit part are all placed on device outside, inner except tested optical fiber ring without thermals source such as other any optical, electrical devices.
According to different tested optical fiber ring sizes, by size and the tolerance of appropriate design " pedestal " part, the clamping force of fiber optic loop accurately can be controlled." pad " of contact tested optical fiber ring two end faces, selects that temperature conductivity is low, thermal expansivity is little and the material that plasticity is high, by porous heat-insulating, can reduce the heat transfer of device to tested optical fiber ring, and effectively absorb the thermal deformation of tested optical fiber ring self.The tail optical fiber of fiber optic loop, by the multichannel groove of appropriate design, achieves unstressed derivation.
All parts in apparatus of the present invention, by the machine-shaping of accurate digital control equipment, precision is high, and dimensional uniformity is good.In structural design, also take into full account the simplification of processing and assembly technology, and the factor such as the facility of later maintenance.
The technical matters that this device mainly solves has: slow down fiber optic loop variation of ambient temperature speed by structural design, make the change of temperature field residing for fiber optic loop slow, reduce thermograde to the impact of fiber optic gyroscope performance, solve the unstressed derivation problem of fiber optic loop tail optical fiber, claimed apparatus volume is little simultaneously, lightweight, structure is simple, is convenient to debugging and batch production.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, specific embodiments of the invention are described in further detail.
Fig. 1 optical fibre gyro fiber optic loop performance evaluation ring deceleration border analogue means
In figure: 1-pedestal; 2-pad; 3-tested optical fiber ring; 4-pressing plate; 5-covers
Embodiment
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail; Should be appreciated that preferred embodiment only in order to the present invention is described, instead of in order to limit the scope of the invention.
The both ends of the surface of tested optical fiber ring 3 respectively add a pad processed by special material 2, are placed in the ring shaped slot of pedestal 1, then are connected by three M3 screws and pedestal 1 with pressing plate 4, finally, are fixed on pedestal 1 by lid 5 four M3 screws.Pedestal 1 and lid 5 have the aperture of a Φ 2mm respectively, for the fiber of tested optical fiber ring tail optical fiber.The joint of pedestal 1 and lid 5 adopts V-type annular groove, and four M3 screw fastenings, in order to strengthen the impermeability of whole device.This device based on be of a size of external diameter 103mm, internal diameter 82mm, thickness 12mm fiber optic loop and design, adopt 6061-T651 aluminum alloy materials, overall physical dimensions is Φ 125mm × 33.5mm.Each several part adopts cross recessed countersunk head sscrew to connect, solid and reliable, has the ability of stronger shock resistance and anti-accelerated motion, structure adopts the design of double-deck air gap, bonding part employing V-type slot fit.For reducing optical, electrical device self-heating to the impact of device internal temperature field, circuit part in system is placed on device outside, inner except tested optical fiber ring substantially without thermal source, according to different tested optical fiber ring sizes, by size and the tolerance of appropriate design " pedestal " part, the clamping force of fiber optic loop accurately can be controlled." pad " of contact tested optical fiber ring two end faces, selects that temperature conductivity is low, thermal expansivity is little and the material that plasticity is high, by porous heat-insulating, can reduce the heat transfer of device to tested optical fiber ring, and effectively absorb the thermal deformation of tested optical fiber ring self.The tail optical fiber of fiber optic loop, by the multichannel groove of appropriate design, achieves unstressed derivation.All parts in device, by the machine-shaping of accurate digital control equipment, precision is high, and dimensional uniformity is good.
Claims (4)
1. an optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear, it is characterized in that: the both ends of the surface of fiber optic loop (3) respectively add a pad processed by special material (2), be placed in the ring shaped slot of pedestal (1), pressing plate (4) is connected by three M3 screws and pedestal (1), lid (5) is fixed on pedestal (1) with four M3 screws, pedestal (1) and lid (5) have the aperture of a Φ 2mm respectively, the joint of pedestal (1) and lid (5) adopts V-type annular groove, four M3 screw fastenings;
Each several part adopts cross recessed countersunk head sscrew to connect, and structure adopts double-deck air gap, design that bonding part adopts V-type slot fit, and the light path in system and circuit part are all placed on device outside, inner except tested optical fiber ring without thermal source.
2. optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear as claimed in claim 1, it is characterized in that: this device based on be of a size of external diameter 103mm, internal diameter 82mm, thickness 12mm fiber optic loop and design, adopt 6061-T651 aluminum alloy materials, overall physical dimensions is Φ 125mm × 33.5mm.
3. optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear as claimed in claim 1 or 2, is characterized in that: described gasket material temperature conductivity is low, thermal expansivity is little and plasticity is high, passes through porous heat-insulating; The tail optical fiber of fiber optic loop, by the multichannel groove of appropriate design, achieves unstressed derivation.
4. optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear as claimed in claim 1 or 2, is characterized in that: all parts in device are by the machine-shaping of accurate digital control equipment, and precision is high, and dimensional uniformity is good.
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| CN201210154948.3A CN102661847B (en) | 2012-05-18 | 2012-05-18 | A kind of optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear |
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| CN201210154948.3A CN102661847B (en) | 2012-05-18 | 2012-05-18 | A kind of optical fibre gyro fiber optic loop performance evaluation ambient temperature reduction gear |
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| CN102661847A CN102661847A (en) | 2012-09-12 |
| CN102661847B true CN102661847B (en) | 2016-01-20 |
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| CN108508251A (en) * | 2017-02-28 | 2018-09-07 | 武汉长盈通光电技术有限公司 | A kind of all-fiber current transformator delay fiber optic loop module manufacturing methods |
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| CN101441129A (en) * | 2008-12-25 | 2009-05-27 | 哈尔滨工程大学 | Optical fiber ring performance measuring and evaluating system based on temperature experiment |
| CN101587010A (en) * | 2009-07-06 | 2009-11-25 | 浙江大学 | Temperature performance evaluating apparatus of fiber-optic ring |
| CN102435210A (en) * | 2011-09-23 | 2012-05-02 | 武汉长盈通光电技术有限公司 | Separable demoulding skeleton for manufacturing optic fiber loop of optic fiber gyroscope |
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| US6765678B2 (en) * | 2002-01-08 | 2004-07-20 | Honeywell International Inc. | Relative intensity noise controller with maximum gain at frequencies at or above the bias modulation frequency or with second order feedback for fiber light sources |
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| CN101441129A (en) * | 2008-12-25 | 2009-05-27 | 哈尔滨工程大学 | Optical fiber ring performance measuring and evaluating system based on temperature experiment |
| CN101587010A (en) * | 2009-07-06 | 2009-11-25 | 浙江大学 | Temperature performance evaluating apparatus of fiber-optic ring |
| CN102435210A (en) * | 2011-09-23 | 2012-05-02 | 武汉长盈通光电技术有限公司 | Separable demoulding skeleton for manufacturing optic fiber loop of optic fiber gyroscope |
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