CN102661847A - Optical fiber loop performance evaluation ambient temperature speed reducer for optical fiber gyroscope - Google Patents
Optical fiber loop performance evaluation ambient temperature speed reducer for optical fiber gyroscope Download PDFInfo
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- CN102661847A CN102661847A CN2012101549483A CN201210154948A CN102661847A CN 102661847 A CN102661847 A CN 102661847A CN 2012101549483 A CN2012101549483 A CN 2012101549483A CN 201210154948 A CN201210154948 A CN 201210154948A CN 102661847 A CN102661847 A CN 102661847A
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Abstract
The invention provides an optical fiber loop performance evaluation ambient temperature speed reducer for an optical fiber gyroscope. The device is characterized in that two gaskets formed by processing a special material are respectively arranged at two end surfaces of an optical fiber loop; the gaskets are arranged in an annular slot of a base; a pressure plate is linked with the base through three M3 screws; a cover is fixedly arranged on the base through four M3 screws; two small holes with the diameter of 2 mm are respectively formed in the base and the cover; and the base and the cover are connected to form into a V-shaped annular slot and are fixed by four M3 screws.
Description
Technical field
The present invention relates to a kind of optical fibre gyro with fiber optic loop performance evaluation environment 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 has directly determined the final precision of inertial navigation.At present, high-precision optical fiber gyro performance under the alternating temperature condition can't satisfy system requirements, and tracing sth. to its source is that optical fiber ring performance is unstable.Because fiber optic loop is relatively more responsive to temperature variation; The precision that has limited optical fibre gyro improves, and improve precision and the stability of optical fibre gyro, will reduce the influence of temperature on fiber ring at first exactly to greatest extent; Reducing temperature effect can start with from two aspects; The one, fiber optic loop or optical fibre gyro integral body are carried out temperature control, the 2nd, improve the technique for coiling and the structural design of fiber optic loop, take good provision for thermal insulation that optical fiber loop is carried out thermoshield; Make the residing variation of ambient temperature speed of fiber optic loop less than 1 ℃/min, thereby reduce of the influence of border thermograde fiber optic loop.To first kind of scheme, owing to increased temperature-controlling system, will produce bigger influence to serviceable life and the reliability of optical fibre gyro, generally can only be used in some specific occasions, be not suitable for inertial navigation and use; Second kind of scheme can tackle the problem at its root, and realizes that finally the high-precision optical fiber gyro through engineering approaches uses, and is second kind of scheme and the practical application of internal optical fiber gyro is adopted basically.
Because the performance parameter of fiber optic loop is very responsive to temperature variation; State of temperature conformed to when the environment temperature when its parameter is measured need be used with reality; For this reason; Designed the environment temperature reduction gear, variation of ambient temperature during with the actual use of analog optical fiber ring, environment temperature and practical application when making the optical fiber ring performance parameter measurement are consistent basically.During less than 3 ℃/min, its internal temperature rate of change can satisfy high-precision optical fiber gyro and measure needs with the fiber optic loop performance parameter less than 0.7 ℃/min this device at extraneous rate temperature change.
Present stage is when carrying out the optical fiber ring performance parameter measurement; Adjusting to fiber optic loop environment temperature of living in is to realize that through the method for controlling temperature-controlled cabinet its temperature-controlled cabinet temperature displayed and the residing environment temperature of fiber optic loop have difference, and rate temperature change control difficulty; Inconvenient operation; Measurement data repeatability and stability are all poor, and fiber optic loop and actual working environment situation differ greatly, and data reliability is poor.The present invention is in order to solve optical fibre gyro with fiber optic loop performance parameter measures ambient temperature deceleration problem of modelling, and the environment temperature when making the optical fiber ring performance parameter measurement conforms to actual user mode.
Summary of the invention
One of the object of the invention is realized through following technical scheme:
A kind of optical fibre gyro is characterized in that with fiber optic loop performance evaluation environment temperature reduction gear the both ends of the surface of fiber optic loop respectively add a pad that is processed by special material; Place the ring shaped slot of pedestal; Pressing plate is connected by three M3 screws and pedestal, and on pedestal, pedestal and lid have the aperture of a Φ 2mm respectively to lid with four M3 screw retention; The joint of base and cover adopts the V-type annular groove, and four M3 screws are fastening.
This device designs based on the fiber optic loop that is of a size of external diameter 103mm, internal diameter 82mm, thickness 12mm, adopts the 6061-T651 aluminum alloy materials, and general shape is of a size of Φ 125mm * 33.5mm.The main mechanical environment of tested optical fiber ring is shock and vibration, improves the structural rigidity resonant frequency that mechanical environment adaptability need be considered device.The volume of apparatus of the present invention is little, in light weight, and is simple in structure, and number of parts is few, and each several part adopts cross recessed countersunk head sscrew to connect, and is 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 are thermograde, adjustment temperature field direction that reduces fiber optic loop and the good heat radiating that guarantees photoelectric device.For solving the good heat insulation and insulation of tested optical fiber circulation pattern, the design of adopting double-deck air crack, bonding part to adopt the V-type groove to cooperate on the structure.For reducing light, electrical part self-heating to installing the influence of internal temperature field, light path in the system and circuit part all are placed on the device outside, inside does not have thermals source such as other any light, electrical part except that the tested optical fiber ring.
According to different tested optical fiber ring sizes,, can accurately control the clamping force of fiber optic loop through the size and the tolerance of appropriate design " pedestal " part." pad " of two end faces of contact tested optical fiber ring selected the material that temperature conductivity is low, thermal expansivity is little and plasticity is high for use, through porous heat-insulating, can reduce the heat conduction of device to the tested optical fiber ring, and effectively absorb the thermal deformation of tested optical fiber ring self.The tail optical fiber of fiber optic loop through the multichannel groove of appropriate design, has been realized unstressed derivation.
All parts in apparatus of the present invention, by the moulding of accurate digital control apparatus processing, precision is high, and dimensional uniformity is good.In the structural design, also taken into full account the simplification of processing and assembly technology, and the factors such as facility of later maintenance.
The technical matters that this device mainly solves has: slow down fiber optic loop variation of ambient temperature speed through structural design; Make the residing change of temperature field of fiber optic loop slow, reduce the influence of thermograde, solve the unstressed derivation problem of fiber optic loop tail optical fiber fiber optic gyroscope performance; The claimed apparatus volume is little simultaneously; In light weight, simple in structure, be convenient to debugging and batch process.
Description of drawings
Below in conjunction with accompanying drawing specific embodiment of the present invention is done further detailed explanation.
Fig. 1 optical fibre gyro is with fiber optic loop performance evaluation ring deceleration border analogue means
Among the figure: the 1-pedestal; The 2-pad; 3-tested optical fiber ring; The 4-pressing plate; The 5-lid
Embodiment
Below will combine accompanying drawing, the preferred embodiments of the present invention will be carried out detailed description; Should be appreciated that preferred embodiment has been merely explanation the present invention, rather than in order to limit protection scope of the present invention.
The both ends of the surface of tested optical fiber ring 3 respectively add a pad 2 that is processed by special material, place the ring shaped slot of pedestal 1, are connected by three M3 screws and pedestal 1 with pressing plate 4 again, and are last, will cover four M3 screw retention of 5 usefulness on pedestal 1.Pedestal 1 and cover 5 a Φ 2mm arranged respectively aperture, be used for the fiber of tested optical fiber ring tail optical fiber.The joint of pedestal 1 and lid 5 adopts the V-type annular groove, and four M3 screws are fastening, in order to strengthen the impermeability of whole device.This device designs based on the fiber optic loop that is of a size of external diameter 103mm, internal diameter 82mm, thickness 12mm, adopts the 6061-T651 aluminum alloy materials, and general shape is of a size of Φ 125mm * 33.5mm.Each several part adopts cross recessed countersunk head sscrew to connect, and is solid and reliable, has the ability of stronger shock resistance and anti-accelerated motion, the design of adopting double-deck air crack, bonding part to adopt the V-type groove to cooperate on the structure.For reducing light, electrical part self-heating to installing the influence of internal temperature field; Circuit part in the system is placed on the device outside; Inside does not have thermal source basically except that the tested optical fiber ring; According to different tested optical fiber ring sizes,, can accurately control the clamping force of fiber optic loop through the size and the tolerance of appropriate design " pedestal " part." pad " of two end faces of contact tested optical fiber ring selected the material that temperature conductivity is low, thermal expansivity is little and plasticity is high for use, through porous heat-insulating, can reduce the heat conduction of device to the tested optical fiber ring, and effectively absorb the thermal deformation of tested optical fiber ring self.The tail optical fiber of fiber optic loop through the multichannel groove of appropriate design, has been realized unstressed derivation.All parts in the device, by the moulding of accurate digital control apparatus processing, precision is high, and dimensional uniformity is good.
Claims (5)
1. an optical fibre gyro is with fiber optic loop performance evaluation environment temperature reduction gear; It is characterized in that: the both ends of the surface of fiber optic loop (3) respectively add a pad that is processed by special material (2), place the ring shaped slot of pedestal (1), and pressing plate (4) is connected by three M3 screws and pedestal (1); The lid (5) with four M3 screw retention on pedestal (1); Pedestal (1) and lid (5) have the aperture of a Φ 2mm respectively, and the joint of pedestal (1) and lid (5) adopts the V-type annular groove, and four M3 screws are fastening.
2. optical fibre gyro as claimed in claim 1 is with fiber optic loop performance evaluation environment temperature reduction gear; It is characterized in that: this device designs based on the fiber optic loop that is of a size of external diameter 103mm, internal diameter 82mm, thickness 12mm; Adopt the 6061-T651 aluminum alloy materials, general shape is of a size of Φ 125mm * 33.5mm.
3. according to claim 1 or claim 2 optical fibre gyro is with fiber optic loop performance evaluation environment temperature reduction gear; It is characterized in that: each several part adopts cross recessed countersunk head sscrew to connect; The design of adopting double-deck air crack, bonding part to adopt the V-type groove to cooperate on the structure; Light path in the system and circuit part all are placed on the device outside, and inside does not have thermal source basically except that the tested optical fiber ring.
4. according to claim 1 or claim 2 optical fibre gyro is with fiber optic loop performance evaluation environment temperature reduction gear, and it is characterized in that: described gasket material temperature conductivity is low, thermal expansivity is little and plasticity is high, through porous heat-insulating.The tail optical fiber of fiber optic loop through the multichannel groove of appropriate design, has been realized unstressed derivation.
5. according to claim 1 or claim 2 optical fibre gyro is characterized in that with fiber optic loop performance evaluation environment temperature reduction gear: all parts in the device are by the moulding of accurate digital control apparatus processing, and precision is high, and dimensional uniformity is good.
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| Application Number | Priority Date | Filing Date | Title |
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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 true CN102661847A (en) | 2012-09-12 |
| CN102661847B CN102661847B (en) | 2016-01-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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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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| US20030128365A1 (en) * | 2002-01-08 | 2003-07-10 | Honeywell International Inc. | Relative intensity noise controller for fiber light sources |
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| 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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2012
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| US20030128365A1 (en) * | 2002-01-08 | 2003-07-10 | Honeywell International Inc. | Relative intensity noise controller for fiber light sources |
| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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