CN103743412A - Nondestructive detection device for light path of fiber-optic gyroscope - Google Patents
Nondestructive detection device for light path of fiber-optic gyroscope Download PDFInfo
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Abstract
The invention relates to a nondestructive detection device for a light path of a fiber-optic gyroscope, and belongs to the technical field of fiber-optic gyroscope detection. The device comprises an infrared imaging system, a lens bracket, an illumination system, a fiber-optic gyroscope fixing component, a five-degree-of-freedom displacement device and an optical flat plate, wherein the infrared imaging system is fixedly connected with the lens bracket; the lens bracket is arranged on the optical flat plate; the infrared imaging system is perpendicular to the optical flat plate; the illumination system is arranged on the optical flat plate, and is just opposite to a fiber-optic gyroscope to be detected, which is fixed on the fiber-optic gyroscope fixing component; the fiber-optic gyroscope fixing component is arranged on the five-degree-of-freedom displacement device which is arranged on the optical flat plate.
Description
Technical field
The present invention relates to a kind of optical fibre gyro light path the cannot-harm-detection device, particularly a kind of device for optical fibre gyro rear end light path defects detection, belongs to optical fibre gyro detection technique field.
Background technology
Optical fibre gyro is a kind of novel all solid state inertia type instrument, has highly reliable, long-life feature, and through the effort of more than ten years, internal optical fiber gyro technology has obtained successful Application in multiple weapons, aerospace model.Along with the deep propelling of each model task, the reliability of optical fibre gyro and long-life require more and more higher.
The optical device such as optical fibre gyro optical routing light source, fiber coupler, Y waveguide, fiber optic loop interconnect by optical fiber and form, and optical fiber is the weak link of reliability wherein.In optical fibre gyro product, optical fiber is through the winding of long distance in fiber optic loop, through photoelectric devices such as multiple fusion points and Y waveguide, light sources, be connected again, various devices be connected a side that also will cement in by silicon rubber fiber optic loop with optical fiber, operating process is complicated and all need operating personnel's manual operations, for thin and crisp optical fiber, operating process easily causes that optical fiber damages.Due to light path assembling process complexity, operating process damage optical fiber may be larger, and manual control measure in only dependence process is difficult to stop completely the damage to optical fiber.
The difference of optical fiber degree of injury, the time difference that optical fiber lost efficacy, can cause the consequence of Different Effects degree, damage more seriously, at check, the test phase of optical fibre gyro, just may expose problem, in the inefficacy in a short time of product payment front and back; If damage slightlyer, belong to light path microdefect, one or two years or longer time lost efficacy possibly, in the longer-term storage of optical fibre gyro product and transportation, lost efficacy, because open-assembly time is more late, this kind of situation is more dangerous, the global failure that very likely causes optical fibre gyro, brings about great losses.Therefore, only depend on manual control measure cannot guarantee optical fibre gyro product quality completely, must have advanced person, reliable technical precaution means.
At present, also lacking effective means detects the defect of optical fiber in optical fibre gyro.Existing detection method only detects defect of optical fiber, publication " method (CN1340155A) of detection fiber defect ", adopt laser beam to be irradiated to optical fiber to check the forward scattering light light distribution that sees through inside of optical fibre scattering from optical axis horizontal direction, according to the defect of light intensity distributions mode detection optical fiber, this patent is for the inspection of drawing optical fibers process; Publication " optical fiber detector (ZL200820093943.3) CN201210045Y " utilizes optical interference circuit to check the geometric parameter of optical fiber; Publication " a kind of optical fiber end face detector ZL200620149898.X (CN200972426Y) " only relates to the detection method of fiber end face.These methods are only the detections for the defect of optical fiber own, and the product of making---optical fibre gyro to optical fiber, the restriction that fixing and structure are installed because being subject to optical fiber, cannot adopt the existing detection method for optical fiber, still there is no the defect of optical fiber in good method detection fiber gyro at present.
Optic fibre light path in optical fibre gyro can be divided into front end light path, rear end light path and fiber optic loop light path, wherein, front end light path can be injected laser detection defect of optical fiber through nominal optical fiber by laser instrument, and fiber optic loop light path can detect by optical time domain reflection (OTDR) pick-up unit.But be adhesively fixed after optical fiber being wound around and adding, rear end light path is by fusion point closure, cannot access checkout equipment detects again, can only manage by visual observation detection fiber defect, and Optical Fiber Winding is in fiber optic loop cavity, with various photoelectric device close together, and there is Optical Fiber Winding bunchy, overlap each other, directly with simple microscope, cannot observe the defect of the optical fiber back side and occlusion area.
Summary of the invention
The object of the invention is in order to overcome the deficiencies in the prior art, a kind of optical fibre gyro light path the cannot-harm-detection device is provided, the pick-up unit of rear end light path defect of optical fiber in a kind of optical fibre gyro, carries out Non-Destructive Testing thereby realize to the optic fibre light path of optical fibre gyro.
The object of the invention is to be achieved through the following technical solutions.
A kind of optical fibre gyro light path the cannot-harm-detection device of the present invention, this device comprises infrared imaging system, lens bracket, illuminator, optical fibre gyro fixation kit, five degree of freedom gearshift and optical flat;
Infrared imaging system is fixedly connected with lens bracket, lens bracket is arranged on optical flat, infrared imaging system is vertical with optical flat, illuminator is arranged on optical flat, illuminator is with to be arranged on testing fiber gyro on optical fibre gyro fixation kit just right, optical fibre gyro fixation kit is arranged on five degree of freedom gearshift, and five degree of freedom gearshift is arranged on optical flat;
Infrared imaging system comprises infrared camera and infrared microscopy camera lens assembly;
Wherein, infrared microscopy camera lens assembly comprises that infrared objective is proofreaied and correct in microscope device, manual turntable and A far field, infrared objective, optical filtering and optical filtering are proofreaied and correct in B far field;
Infrared camera is fixedly connected with microscope device, microscope device is fixedly connected with manual turntable, infrared objective is proofreaied and correct in A far field and B far field correction infrared objective is all fixedly connected on manual turntable, A far field correction infrared objective is the enlarging lens of 2 times, and B far field correction infrared objective is the enlarging lens of 10 times; A far field is proofreaied and correct infrared objective and is fixedly connected with optical filtering with optical filtering respectively with B far field correction infrared objective, and the filtering spectrum of optical filtering and optical filtering is rectangle, and the scope of filtering spectrum is 1200～1650nm, and rejection ratio is not less than 20dB;
Lens bracket comprises card extender, cross bar, montant and base; One end of card extender and the top of cross bar are fixedly linked, and the other one end of cross bar is threaded hole and is connected with vertical being fixedly connected with in one end that montant is threaded hole, and top and the base of the montant other end are vertically connected;
Illuminator comprises visible light source, purple light light source, two light source brackets and light source base plate, and visible light source and purple light light source are fixedly mounted on respectively on light source bracket, and light source bracket is fixedly mounted on light source base plate;
Optical fibre gyro fixation kit comprises press strip, dog screw, rubber cushion, pillar, back up pad and bracing frame.Back up pad is fixedly mounted on bracing frame, dog screw is fixed on press strip on pillar by threaded hole, press strip can slide vertically on pillar, and elastic mounting is arranged on the bottom surface of press strip external part and is pressed in the upper surface of testing fiber gyro, prevents from scratching gyro surface.Pillar TOE, is fixedly mounted in back up pad, is 90 ° of distributions between four pillars.
Five degree of freedom regulating device comprises that position, angle platform, Z-direction lifting table, universal stage, X are to horizontal shift platform and Y-direction horizontal shift platform, and wherein Z-direction is the direction vertical with optical flat, and X is to the length direction that is optical flat, the cross direction that Y-direction is optical flat; Testing fiber gyro is fixedly mounted on the platform of position, angle; Y-direction horizontal shift platform is fixedly mounted on optical flat, and moving direction is moving horizontally along Y-direction; X is fixedly mounted on Y-direction horizontal shift platform to horizontal shift platform, and moving direction is that moving direction is moving horizontally along directions X; Universal stage is fixedly mounted on X on displacement platform; Z-direction lifting table is fixedly mounted on universal stage, and moving direction is the vertical movement along Z direction; Position, angle platform is fixedly mounted on Z-direction lifting table.
In this pick-up unit, the main annexation of each several part is: infrared imaging system is vertical with optical flat, and is fixedly connected with the card extender in lens bracket by screw thread on microscope device.Base in lens bracket is fixedly connected with optical flat.Light source base plate in illuminator is fixedly mounted on optical flat, and illuminator is positioned at a side of five degree of freedom regulating device.Bracing frame in optical fibre gyro fixation kit is fixedly connected with position, angle platform.
During this pick-up unit work, while detecting defect, A far field correction infrared objective or B far field are proofreaied and correct infrared objective and are aimed at the testing fiber gyro being placed in back up pad, by five degree of freedom gearshift, adjust light gyro to be measured position, when rough detection fiber gyro defect, use low power enlarging objective, be rotation manual rotating disk, make A far field proofread and correct infrared objective and turn to microscope device below; During meticulous detection, rotation manual rotating disk, makes B far field proofread and correct infrared objective and turns to microscope device below.The direction of illumination of visible light source or purple light light source is just to testing fiber gyro.Back up pad and bracing frame can make testing fiber gyro on the platform of position, angle, obtain larger angle of inclination, avoid interfering.
For avoiding the interference of surround lighting to infrared imaging system, pick-up unit is placed in optical dark room.Visible light source throws light on while being used for adjusting optical fibre gyro position, infrared camera utilizes the infrared spectral coverage in visible ray to treat survey imaging fiber, and operating personnel, by the real-time demonstration image of computing machine, observe target to be measured, adjust the operating distance of camera, make camera focusing clear.Floor light when purple light light source detects for optical fiber, operating personnel can see object in darkroom, carry out necessary operational motion, and purple light spectral coverage scope is not in the sensitive range of infrared imaging system, can not disturb the detection of infrared camera to infrared leakage light in optical fiber.
A kind of optical fibre gyro light path the cannot-harm-detection device of the present invention, utilize infrared camera to detect the infrared light that the rear defect of optical fiber of gyro energising place reveals, due to the impact that the penetrability of infrared light is not blocked by fibre bundle mutually, the defect image being obtained by infrared imaging system can be realized optical fibre gyro rear end light path defects detection.Infrared camera is used for treating detection fiber imaging, and sends image to computing machine, then by computing machine, carries out follow-up image and process calculating, and the defect of optical fiber image obtaining is identified, judged, confirms the type of defect.
The present invention is directed to the feature of optical fibre gyro rear end light path, adopt infrared imaging system and utilize the optical signal detecting defect of optical fiber transmitting in optical fiber in optical fibre gyro, realize the defects detection of reinforcing rear optical fiber to being wound around.Tool has the following advantages:
If adopt magnifier directly to observe to the detection of optical fiber, be difficult to detect the tiny flaw of optical fiber.Adopt microscopic examination, can check fiber end face, and for through being wound around and adding the optical fiber being adhesively fixed, cannot detection fiber wrapping around invisible area.Existing is all the control for optical fiber quality in fiber manufacturing process to the detection method of defect of optical fiber, but for the product of making---the optical fibre gyro of optical fiber, does not also have a kind of perfect method effectively to detect whole optical fiber links at present.
(1) can detect some occlusion areas that cannot observe under visible ray condition;
(2) defect situation after the installation of direct-detection optical fiber, non-contacting fiber, does not destroy optical fiber, and testing process can not cause secondary damage to optical fiber;
(3) utilize the light signal of gyro self, without increasing extra instrument and equipment;
(4), by the infrared leakage light of infrared camera detection optical fiber, the tiny flaw that detection fiber exists, finds the potential safety hazard of optical fibre gyro timely, avoids the subsequent quality problem of gyro product; The regulating device of five degree of freedom can be adjusted the pose of optical fibre gyro flexibly, convenient to being wrapped in the detection of optical fiber ring wall glazing fibre.
Accompanying drawing explanation
Fig. 1 is the cannot-harm-detection device structural drawing of the present invention;
Fig. 2 is infrared imaging system figure;
Fig. 3 is diagram of light system;
Fig. 4 is light source bracket figure;
Fig. 5 A, Fig. 5 B are optical fibre gyro fixation kit figure;
Fig. 6 is five degree of freedom regulating device figure.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
This device comprises infrared imaging system 1, lens bracket 2, illuminator 3, optical fibre gyro fixation kit 4, five degree of freedom gearshift 5 and optical flat 6.As shown in Figure 1, infrared imaging system 1 is connected with lens bracket 2, lens bracket 2 is arranged on optical flat 6, infrared imaging system 1 is vertical with optical flat 6, illuminator 3 is arranged on optical flat 6, just, to being arranged on the testing fiber gyro on optical fibre gyro fixation kit 4, optical fibre gyro fixation kit 4 is arranged on five degree of freedom gearshift 5, and five degree of freedom gearshift 5 is arranged on optical flat 6.
As shown in Figure 2, infrared imaging system 1 comprises infrared camera 11, infrared microscopy camera lens assembly 12.Wherein, infrared microscopy camera lens assembly 12 comprises microscope device 121, manual turntable 122 and the positive infrared objective 123 of school, far field A and B far field correction infrared objective 124.Infrared camera 11 is connected with microscope device 121, microscope device 121 is connected with manual turntable 122, infrared objective 123 is proofreaied and correct in A far field and B far field correction infrared objective 124 is arranged on manual turntable 122, and A object lens 123 are the enlarging lens of 2 times, and B object lens 124 are the enlarging lens of 10 times.A far field is proofreaied and correct infrared objective 123 and is connected with optical filtering 125 and optical filtering 126 respectively with B far field correction infrared objective 124, and the filtering spectrum of optical filtering is rectangle, and the scope of filtering spectrum is 1200～1650nm, and rejection ratio is not less than 20dB.
As shown in Figure 3, lens bracket 2 comprises card extender 21, cross bar 22, montant 23, base 24.Card extender 21 is connected with cross bar 22, and cross bar 22 is connected with montant 23, and montant 23 is connected with base 24.
As shown in Figure 4, illuminator 3 comprises that visible light source 31 and 32, two lighting sources of purple light light source are fixedly mounted on respectively on light source bracket 33.
As shown in Fig. 5 A, Fig. 5 B, optical fibre gyro fixation kit 4 comprises press strip 41, dog screw 42, rubber cushion 43, pillar 45, back up pad 46 and bracing frame 47.Back up pad 46 is arranged on bracing frame 47.Dog screw 42 is connected with press strip 41, and press strip 41 is fixed on pillar 45, and rubber cushion 43 is arranged on one end of press strip 41, contacts with gyro 44 to be measured, prevents from scratching gyro surface.Pillar 45 TOE, are arranged in back up pad 46, are 90 ° of distributions between four pillars 45.
As shown in Figure 6, five degree of freedom regulating device 5 comprises three-D displacement, one dimension rotation and one dimension angular displacement, and testing fiber gyro 44 is positioned in five degree of freedom regulating device 5.At nethermost installation Y-direction horizontal shift platform 55, moving direction is that the direction of Vertical camera lens optical axis moves horizontally, X is arranged on Y-direction horizontal shift platform 55 to horizontal shift platform 54, moving direction is moves horizontally vertical with Y-axis, universal stage 53 is arranged on X on displacement platform 54, Z-direction lifting table 52 is arranged on universal stage 53, and moving direction is the vertical movement along camera lens optical axis, and position, angle platform 51 is arranged on Z-direction lifting table 52.
In this pick-up unit, the main annexation of each several part is: infrared imaging system 1 is vertical with optical flat 6, and is fixedly connected with the card extender 21 in lens bracket 2 by screw thread on microscope device 121.Base 24 in lens bracket 2 is fixedly connected with optical flat 6.Light source bracket 33 in illuminator 3 is fixedly mounted on optical flat 6, is fixedly connected with, and is positioned at a side of five degree of freedom regulating device 5.Bracing frame 47 in optical fibre gyro fixation kit 4 fixedly mounts with position, angle platform 51.
During this pick-up unit work, while detecting defect, object lens are aimed at the testing fiber gyro 44 being placed in back up pad 46, by five degree of freedom gearshift 5, adjust gyro to be measured position, when rough detection fiber gyro defect, use low power enlarging objective, be rotation manual rotating disk 122, make A object lens 123 turn to microscope device 121 belows; During meticulous detection, rotation manual rotating disk 122, makes B object lens 124 turn to microscope device 121 belows.The direction of illumination of light source is just to optical fibre gyro 44.Back up pad 46 and bracing frame 47 can make optical fibre gyro on position, angle platform 51, obtain larger angle of inclination, avoid interfering.
A kind of optical fibre gyro light path the cannot-harm-detection device of the present invention, utilize infrared camera to detect the infrared light that the rear defect of optical fiber of gyro energising place reveals, due to the impact that the penetrability of infrared light is not blocked by fibre bundle mutually, the defect image being obtained by infrared imaging system can be realized optical fibre gyro rear end light path defects detection.Infrared camera 11 is for treating detection fiber imaging, and sends image to computing machine, then by computing machine, carries out follow-up image and process and calculate, and the defect of optical fiber image obtaining is identified, judged, confirms the type of defect.Pick-up unit is placed in optical dark room, avoids the interference of surround lighting to infrared imaging system.
Embodiment
A kind of optical fibre gyro light path the cannot-harm-detection device, as shown in Figure 1, this device comprises infrared imaging system 1, lens bracket 2, illuminator 3, optical fibre gyro fixation kit 4, five degree of freedom gearshift 5 and optical flat 6;
As shown in Figure 2, infrared imaging system 1 comprises infrared camera 11 and infrared microscopy camera lens assembly 12;
Wherein, infrared microscopy camera lens assembly 12 comprises that infrared objective 123 is proofreaied and correct in microscope device 121, manual turntable 122 and A far field, infrared objective 124, optical filtering 125 and optical filtering 126 are proofreaied and correct in B far field;
As shown in Figure 3, lens bracket 2 comprises card extender 21, cross bar 22, montant 23 and base 24; The top of one end of card extender 21 and cross bar 22 is fixedly linked, and the other one end of cross bar 22 is threaded hole and is connected with vertical being fixedly connected with in one end that montant 23 is threaded hole, and top and the base 24 of montant 23 other ends are vertically connected;
As shown in Figure 4, illuminator 3 comprises visible light source 31, purple light light source 32, two light source brackets 33 and light source base plates 34, visible light source 31 and purple light light source 32 are fixedly mounted on respectively on light source bracket 33, and light source bracket 33 is fixedly mounted on light source base plate 34;
As shown in Fig. 5 A and Fig. 5 B, optical fibre gyro fixation kit 4 comprises press strip 41, dog screw 42, rubber cushion 43, pillar 45, back up pad 46 and bracing frame 47.Back up pad 46 is fixedly mounted on bracing frame 47, dog screw 42 is fixed on press strip 41 on pillar 45 by threaded hole, press strip 41 can slide vertically on pillar 45, rubber cushion 43 is fixedly mounted on the bottom surface of press strip 41 external parts and is pressed in the upper surface of testing fiber gyro 44, prevents from scratching gyro surface.Pillar 45 TOE, are fixedly mounted in back up pad 46, are 90 ° of distributions between four pillars 45.
As shown in Figure 6, five degree of freedom regulating device 5 comprises that position, angle platform 51, Z-direction lifting table 52, universal stage 53, X are to horizontal shift platform 54 and Y-direction horizontal shift platform 55, wherein Z-direction is the direction vertical with optical flat 6, and X is to the length direction that is optical flat 6, and Y-direction is the cross direction of optical flat 6; Testing fiber gyro 44 is fixedly mounted on position, angle platform 51; Y-direction horizontal shift platform 55 is fixedly mounted on optical flat 6, and moving direction is moving horizontally along Y-direction; X is fixedly mounted on Y-direction horizontal shift platform 55 to horizontal shift platform 54, and moving direction is that moving direction is moving horizontally along directions X; Universal stage 53 is fixedly mounted on X on displacement platform 54; Z-direction lifting table 52 is fixedly mounted on universal stage 53, and moving direction is the vertical movement along Z direction; Position, angle platform 51 is fixedly mounted on Z-direction lifting table 52.
In this pick-up unit, the main annexation of each several part is: infrared imaging system 1 is vertical with optical flat 6, and is fixedly connected with the card extender 21 in lens bracket 2 by screw thread on microscope device 121.Base 24 in lens bracket 2 is fixedly connected with optical flat 6.Light source base plate 34 in illuminator 3 is fixedly mounted on optical flat 6, and illuminator 3 is positioned at a side of five degree of freedom regulating device 5.Bracing frame 47 in optical fibre gyro fixation kit 4 is fixedly connected with position, angle platform 51.
During this pick-up unit work, while detecting defect, A far field correction infrared objective 123 or B far field are proofreaied and correct infrared objective 124 and are aimed at the testing fiber gyro 44 being placed in back up pad 46, by five degree of freedom gearshift 5, adjust light gyro to be measured 44 positions, when rough detection fiber gyro defect, use low power enlarging objective, be rotation manual rotating disk 122, make A far field proofread and correct infrared objective 123 and turn to microscope device 121 belows; During meticulous detection, rotation manual rotating disk 122, makes B far field proofread and correct infrared objective 124 and turns to microscope device 121 belows.The direction of illumination of visible light source 31 or purple light light source 32 is just to testing fiber gyro 44.Back up pad 46 and bracing frame 47 can make testing fiber gyro 44 on position, angle platform 51, obtain larger angle of inclination, avoid interfering.
The content not being described in detail in instructions of the present invention belongs to the known prior art of professional and technical personnel in the field.
Claims (8)
1. an optical fibre gyro light path the cannot-harm-detection device, is characterized in that: this device comprises infrared imaging system, lens bracket, illuminator, optical fibre gyro fixation kit, five degree of freedom gearshift and optical flat;
Infrared imaging system is fixedly connected with lens bracket, lens bracket is arranged on optical flat, infrared imaging system is vertical with optical flat, illuminator is arranged on optical flat, illuminator is with to be arranged on testing fiber gyro on optical fibre gyro fixation kit just right, optical fibre gyro fixation kit is arranged on five degree of freedom gearshift, and five degree of freedom gearshift is arranged on optical flat.
2. a kind of optical fibre gyro light path the cannot-harm-detection device according to claim 1, is characterized in that: infrared imaging system comprises infrared camera and infrared microscopy camera lens assembly;
Wherein, infrared microscopy camera lens assembly comprises that infrared objective is proofreaied and correct in microscope device, manual turntable and A far field, infrared objective, optical filtering and optical filtering are proofreaied and correct in B far field;
Infrared camera is fixedly connected with microscope device, microscope device is fixedly connected with manual turntable, infrared objective is proofreaied and correct in A far field and B far field correction infrared objective is all fixedly connected on manual turntable, and A far field is proofreaied and correct infrared objective and is fixedly connected with optical filtering with optical filtering respectively with B far field correction infrared objective.
3. a kind of optical fibre gyro light path the cannot-harm-detection device according to claim 2, is characterized in that: A far field correction infrared objective is the enlarging lens of 2 times, and B far field correction infrared objective is the enlarging lens of 10 times.
4. a kind of optical fibre gyro light path the cannot-harm-detection device according to claim 2, is characterized in that: the filtering spectrum of optical filtering and optical filtering is rectangle, and the scope of filtering spectrum is 1200～1650nm, and rejection ratio is not less than 20dB.
5. a kind of optical fibre gyro light path the cannot-harm-detection device according to claim 1, is characterized in that: lens bracket comprises card extender, cross bar, montant and base; One end of card extender and the top of cross bar are fixedly linked, and the other one end of cross bar is threaded hole and is connected with vertical being fixedly connected with in one end that montant is threaded hole, and top and the base of the montant other end are vertically connected.
6. a kind of optical fibre gyro light path the cannot-harm-detection device according to claim 1, it is characterized in that: illuminator comprises visible light source, purple light light source, two light source brackets and light source base plate, visible light source and purple light light source are fixedly mounted on respectively on light source bracket, and light source bracket is fixedly mounted on light source base plate.
7. a kind of optical fibre gyro light path the cannot-harm-detection device according to claim 1, is characterized in that: optical fibre gyro fixation kit comprises press strip, dog screw, rubber cushion, pillar, back up pad and bracing frame; Back up pad is fixedly mounted on bracing frame, dog screw is fixed on press strip on pillar by threaded hole, press strip can slide vertically on pillar, and elastic mounting is arranged on the bottom surface of press strip external part and is pressed in the upper surface of testing fiber gyro, prevents from scratching gyro surface; Pillar TOE, is fixedly mounted in back up pad, is 90 ° of distributions between four pillars.
8. a kind of optical fibre gyro light path the cannot-harm-detection device according to claim 1, it is characterized in that: five degree of freedom regulating device comprises that position, angle platform, Z-direction lifting table, universal stage, X are to horizontal shift platform and Y-direction horizontal shift platform, wherein Z-direction is the direction vertical with optical flat, X is to the length direction that is optical flat, the cross direction that Y-direction is optical flat; Testing fiber gyro is fixedly mounted on the platform of position, angle; Y-direction horizontal shift platform is fixedly mounted on optical flat, and moving direction is moving horizontally along Y-direction; X is fixedly mounted on Y-direction horizontal shift platform to horizontal shift platform, and moving direction is that moving direction is moving horizontally along directions X; Universal stage is fixedly mounted on X on displacement platform; Z-direction lifting table is fixedly mounted on universal stage, and moving direction is the vertical movement along Z direction; Position, angle platform is fixedly mounted on Z-direction lifting table.
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