Miniaturized fiber-optic gyroscope with heat insulation design

Abstract

The utility model belongs to the technical field of fiber-optic gyroscopes, and particularly relates to a miniaturized fiber-optic gyroscope with a heat insulation design, which comprises a gyroscope heating part, a gyroscope sensitive part and a heat insulation gasket positioned between the gyroscope heating part and the gyroscope sensitive part, the gyro heating component comprises a light source and a control unit. The middle area of the light source penetrates through the control unit to be fixed. A heat dissipation surface is arranged at the bottom of the gyroscope heating component and is used for conducting heat of the gyroscope heating component to the outside; the gyroscope sensitive part comprises an optical fiber ring, a coupler for distributing light beams and a Y waveguide. The fiber-optic gyroscope is small in size, light in weight and low in manufacturing cost, meets miniaturization design, can be applied to conventional scenes and scenes with strict space requirements, maximizes the heat dissipation area, realizes rapid heat dissipation, ensures stable performance of the fiber-optic gyroscope and is convenient to maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical fiber gyroscopes, and in particular relates to a miniaturized optical fiber gyroscope with a heat insulation design. Background Art

[0002] Fiber optic gyroscope is an inertial instrument that can accurately measure the rotation speed of a carrier. It is an inertial navigation instrument widely used in modern aviation, navigation, aerospace and defense industries. The working principle of fiber optic gyroscope is based on the Sagnac effect. The Sagnac effect is a common correlation effect of light propagating in a closed-loop optical path rotating relative to inertial space, that is, two beams of light with equal characteristics emitted from the same light source in the same closed optical path propagate in opposite directions and finally converge at the same detection point. If there is an angular velocity of rotation relative to inertial space around an axis perpendicular to the plane where the closed optical path is located, the optical paths of the light beams propagating in the forward and reverse directions are different, resulting in an optical path difference, which is proportional to the angular velocity of rotation. Therefore, as long as the information of the optical path difference and the corresponding phase difference is known, the angular velocity of rotation can be obtained.

[0003] Existing fiber optic gyroscopes have the following problems: In order to prevent the heat source of the heating components from affecting the sensitive components, some fiber optic gyroscopes adopt a split design for the heating components and the sensitive components. Although some are integrated into one body, they are large in size, high in total weight, and have poor heat dissipation, which not only has high manufacturing costs but also affects the performance of the fiber optic gyroscope. For those application scenarios with strict restrictions on space and weight, there are problems with deployment difficulties, high modification costs, limited application scenarios, and inconvenience in carrying and installation.

[0004] Therefore, a fiber optic gyroscope that can solve the existing problems is needed. Utility Model Content

[0005] In view of the defects of the prior art, the present application proposes a miniaturized fiber optic gyroscope with a heat insulation design.

[0006] In order to achieve the technical purpose of the utility model, the utility model will adopt the following technical solutions:

[0007] A miniaturized fiber optic gyroscope with a heat insulation design comprises a gyroscope heating component, a gyroscope sensitive component, and a heat insulation gasket located between the gyroscope heating component and the gyroscope sensitive component;

[0008] The gyro heating component includes a light source, a control unit and a detector, wherein the middle region of the light source passes through the control unit and is fixed; the bottom of the gyro heating component has a heat dissipation surface, and the heat dissipation surface is used to conduct the heat of the gyro heating component to the outside; the gyro sensitive component includes an optical fiber ring and a coupler and a Y waveguide for distributing light beams; the gyro heating component is used to drive the light source to generate a working light wave based on the control unit; and the thermal insulation gasket is used to prevent the heat of the gyro heating component from being conducted to the gyro sensitive component.

[0009] Furthermore, the gyro heating component also includes a gyro base; the top of the gyro base is provided with an opening, the closed surface of the bottom is the heat dissipation surface, the middle part has a cylindrical cavity with the same area as the top opening, the inner wall surface of the cavity is provided with a group of multiple bosses of the same height, each boss extends upward from the top of the heat dissipation surface along the inner wall surface of the cavity to a certain height, and the top surface of the boss is lower than the top surface of the gyro base.

[0010] Furthermore, the bottom of the heat dissipation surface has a plurality of fins arranged at intervals, and the laying area of ​​the fins covers the bottom surface of the gyroscope base.

[0011] Furthermore, the light source of the gyro heating component adopts a laser, and the control unit of the gyro heating component includes a light source driving circuit board and a fiber optic gyro signal processing circuit board; a laser mounting opening is opened on the light source driving circuit board, the laser extends into the laser mounting opening, and its part is sunk below the bottom of the light source driving circuit board, the bottom of the laser has a bracket support plate with mounting holes, the heat dissipation surface has a plurality of threaded holes matching the mounting holes of the bracket support plate of the laser, and the laser is fixed to the heat dissipation surface by corresponding fasteners; a threaded hole is opened on the top of the boss of the gyro base, and an opening matching the boss is opened on the fiber optic gyro signal processing circuit board, and the fiber optic gyro signal processing circuit board is located above the laser and fixed to the boss of the gyro base by corresponding fasteners.

[0012] Furthermore, the laser has a plurality of light source pins on both sides, and the light source pins are welded on the top surface of the light source driving circuit board.

[0013] Furthermore, the profile of the thermal insulation gasket matches the top profile of the gyroscope base.

[0014] Furthermore, the gyro sensitive component also includes a fiber optic ring base; the bottom of the fiber optic ring base is provided with mounting positions for the coupler and the Y-waveguide, and the top of the fiber optic ring base is provided with an annular groove for fixing the fiber optic ring.

[0015] Furthermore, the gyro sensitive component also includes a fiber optic ring outer cover; the fiber optic ring outer cover is closed at the top and open at the bottom, and the open end cover is buckled on the fiber optic ring to form a fully enclosed structure with the fiber optic ring base; the fiber optic ring base and the fiber optic ring outer cover are connected by corresponding fasteners.

[0016] Furthermore, the optical fiber ring base and the optical fiber ring outer cover are made of an iron-nickel alloy material, and the nickel alloy material is used to play a magnetic shielding role.

[0017] Furthermore, the gyro heating component also includes a detector located between the light source driving circuit board and the fiber optic gyro signal processing circuit board; the fiber optic gyro signal processing circuit board is connected to the detector and the Y waveguide respectively through connecting lines.

[0018] The beneficial effects of the utility model are:

[0019] First, the gyro heating component of the utility model is arranged at the bottom of the miniaturized fiber optic gyroscope, and the heat generated by the heating component is conducive to being conducted out from the heat dissipation surface at the bottom of the gyroscope base. The integrated sunken light source driving circuit board and laser make the overall structure of the gyroscope heating component more compact, meeting the miniaturized design requirements, and can be applied to scenes with strict space requirements, with portability and flexibility; the heat insulation gasket blocks the heat of the heating component to prevent the heat source from affecting the sensitive components of the gyroscope;

[0020] Second, the utility model has a cylindrical cavity in the middle of the gyro base, the diameter of the cylindrical cavity is the same as the top opening area, and has a lightweight design, which reduces the overall weight of the fiber optic gyro, has low requirements on the structural strength of the bearing parts for fixing the fiber optic gyro, is simple in design, uses less materials, and has low design and manufacturing costs;

[0021] Third, the bottom of the heat dissipation surface of the gyro base of the utility model has a plurality of fins arranged at intervals, and the fin laying area is equivalent to the bottom surface area of ​​the gyro base, which can maximize the heat source and achieve rapid heat dissipation;

[0022] Fourth, the boss design of the utility model is simple in process and ensures that the fiber optic gyro signal processing circuit board is firmly installed;

[0023] Fifth, the optical fiber ring base and the optical fiber ring cover of the utility model are made of iron-nickel alloy material, which has good magnetic shielding performance;

[0024] Sixth, the optical fiber ring cover and the optical fiber ring base of the utility model are connected by bolts, which not only reduces the cost but also makes it easier to maintain compared to welding.

[0025] Seventh, the light source pins of the utility model are directly welded on the top surface of the light source driving circuit board, eliminating the welding wires and making the process more regular. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural diagram of a miniaturized fiber optic gyroscope with a heat insulation design according to Example 1 of the utility model;

[0027] Figure 2 The explosion of the miniaturized fiber optic gyroscope with heat insulation design of the embodiment 1 of the utility model Figure 1 ;

[0028] Figure 3 It is a three-dimensional structural diagram of the assembly state of the gyro base, the light source driving circuit board and the laser of Example 2 of the utility model;

[0029] Figure 4 is a three-dimensional structural diagram of the assembly state of the fiber optic gyro signal processing circuit board of Example 2 of the utility model;

[0030] Figure 5 It is a three-dimensional structural diagram of the heat dissipation surface of the gyro base of Example 2 of the utility model;

[0031] Figure 6 It is a three-dimensional structural diagram of the assembly state of the gyro sensitive component of Example 3 of the utility model;

[0032] Figure 7 The explosion of the miniaturized fiber optic gyroscope with heat insulation design of embodiment 4 of the utility model Figure 2 ;

[0033] Figure 8 It is a principle diagram of a miniaturized fiber optic gyroscope with a heat insulation design according to an embodiment of the utility model.

[0034] Among them, 1-gyro heating component; 10-gyro base; 100-heat dissipation surface; 11-light source driving circuit board; 12-laser; 120-light source pin; 13-detector; 14-fiber optic gyro signal processing circuit board; 2-thermal insulation gasket; 3-gyro sensitive component; 30-coupler; 31-Y waveguide; 32-fiber optic ring base; 33-fiber optic ring; 34-fiber optic ring outer cover. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present application, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] The terms such as up, down, left, right, front and back in this application document are based on the positional relationships shown in the drawings. If the drawings are different, the corresponding positional relationships may also change accordingly, so they cannot be understood as limiting the scope of protection.

[0037] In this application, the terms "install", "connected", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, or mutual communication, a direct connection, or an indirect connection through an intermediate medium, the internal connection of two components, or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The utility model describes a miniaturized fiber optic gyroscope with a heat insulation design. Figure 1-2 The miniaturized fiber optic gyroscope includes a gyroscope heating component 1, a gyroscope sensitive component 3, and a heat-insulating gasket 2 located between the gyroscope heating component 1 and the gyroscope sensitive component 3. The gyroscope heating component 1 includes a light source, a control unit, and a detector. The middle area of ​​the light source penetrates the control unit and is fixed; the bottom of the gyroscope heating component 1 has a heat dissipation surface, which is used to conduct the heat of the electronic components in the gyroscope heating component 1 to the outside. The gyroscope sensitive component 3 includes an optical fiber ring 33 and a coupler 30 and a Y waveguide 31 for light energy distribution. The gyroscope heating component 1 is used to drive the light source to generate working light waves based on the control unit, control the temperature of the light source to ensure the stability of the light power and wavelength of the light source, and modulate and demodulate the optical path to obtain the angular velocity sensed by the fiber optic gyroscope. The working light waves emitted by the light source are successively transmitted to the optical fiber ring 33 by the coupler 30 and the Y waveguide 31, and then return to the Y waveguide 31 and the coupler 30 to return to the detector after passing through the optical fiber ring 33. The heat-insulating gasket 2 is used to prevent the heat of the electronic components in the gyroscope heating component 1 from being conducted to the gyroscope sensitive component 3.

[0039] Example 1

[0040] Refer to the instruction manual Figure 2-5 The light source of the gyro heating component 1 is a laser 12, the control unit of the gyro heating component 1 includes a light source driving circuit board 11 and a fiber optic gyro signal processing circuit board 14, and the gyro heating component 1 also includes a gyro base 10. The detector of the gyro heating component 1 is as shown in the attached manual. Figure 2 The detector 13 is shown.

[0041] The top of the gyroscope base 10 is provided with an opening, and the closed surface of the bottom is a heat dissipation surface 100, wherein the middle part has a cylindrical cavity with the same area as the top opening, and the inner wall surface of the cavity is provided with a group of multiple bosses of the same height, and the number of the multiple bosses is at least 4, and each boss extends upward from the top of the heat dissipation surface 100 of the gyroscope base 10 along the inner wall surface of the cavity to a certain height, and the top surface of the boss is lower than the top surface of the gyroscope base 10.

[0042] Preferably, the gyro base 10 is made of a material with good thermal conductivity, such as aluminum alloy.

[0043] Instructions attached Figure 5 For example, the bottom of the heat dissipation surface 100 of the gyro base 10 has a plurality of spaced fins to improve the efficiency of heat conduction from the internal heat generating component 1 to the outside. Preferably, the fins cover the bottom surface of the gyro base 10, and the fin thickness is less than the spacing between adjacent fins.

[0044] The light source driving circuit board 11 is used to drive the laser 12 to generate working light waves and to control the temperature of the laser, and a boss avoidance opening is opened on its outer edge. A laser mounting port is opened on the light source driving circuit board 11, and the laser 12 extends into the laser mounting port, and part of it sinks below the bottom of the light source driving circuit board 11. The part of the laser 12 located below the bottom of the light source driving circuit board 11 has a bracket support plate with mounting holes, and the heat dissipation surface 100 of the gyro base 10 has a plurality of threaded holes matching the mounting holes of the bracket support plate of the laser 12, and the bottom of the laser 12 is fixed to the heat dissipation surface 100 of the gyro base 10 by corresponding fasteners. The integrated sinking design of the laser 12 and the light source driving circuit board 11 reduces the overall height, and the structure is more compact and miniaturized. There are multiple light source pins 120 on both sides of the laser 12, and the light source pins 120 are overlapped on the top surface of the light source driving circuit board 11 and directly welded, eliminating the welding wire, making the process more regular. There are 8 light source pins 120 in this embodiment.

[0045] A threaded hole is formed on the top of the boss of the gyro base 10, and an opening matching the boss is formed on the fiber optic gyro signal processing circuit board 14. The fiber optic gyro signal processing circuit board 14 is located above the laser 12, and is used to modulate and demodulate the phase difference of the two light beams distributed by the gyro sensitive component 3 to obtain angular velocity information. The fiber optic gyro signal processing circuit board 14 is fixed to the boss of the gyro base 10 by bolts. The detector 13 is located between the light source driving circuit board 11 and the fiber optic gyro signal processing circuit board 14, and is connected to the fiber optic gyro signal processing circuit board 14 through a connecting line, and the fiber optic gyro signal processing circuit board 14 is also connected to the Y waveguide 31 through a connecting line.

[0046] According to the structure of the present embodiment, the gyroscope heating component light source driving circuit board 11, laser 12, detector 13 and fiber optic gyroscope signal processing circuit board 14 are arranged at the bottom of the miniaturized fiber optic gyroscope. The heat generated by the heating component is conducive to being conducted out from the heat dissipation surface 100 of the gyroscope base 10 through the fins. The integrated sunken light source driving circuit board 11 and laser 12 make the overall structure of the gyroscope heating component 1 more compact, meeting the requirements of miniaturized design; the boss design and simple process ensure that the fiber optic gyroscope signal processing circuit board 14 is firmly installed; the gyroscope base 10 has a cylindrical cavity in the middle, and the diameter of the cylindrical cavity is the same as the top opening area. It has a lightweight design, reduces the overall weight of the fiber optic gyroscope, has low requirements on the structural strength of the bearing parts for fixing the fiber optic gyroscope, has a simple design, uses less materials, and has low design and manufacturing costs. The fin laying area of ​​the heat dissipation surface 100 is equivalent to the bottom surface area of ​​the gyroscope base 10, which can maximize the heat source export and achieve rapid heat dissipation.

[0047] Example 2

[0048] On the basis of Example 1, a plurality of internal threaded holes are opened on the inner side of the top edge of the gyro base 10, and a matching through hole is opened on the thermal insulation gasket 2, and the thermal insulation gasket 2 is installed on the top of the gyro base 10 by bolts, and the profile of the thermal insulation gasket 2 matches the top profile of the gyro base 10, so as to seal the top of the gyro base 10. The thermal insulation gasket 2 is provided with a wire hole for passing the optical fiber and the connecting wire between the optical fiber gyro signal processing circuit board 14 and the Y waveguide.

[0049] With the structure of this embodiment, the heat insulating gasket 2 blocks the heat of the heat generating component, thereby preventing the heat source from affecting the gyro sensitive component 3 .

[0050] Example 3

[0051] Refer to the instruction manual Figure 2 and 6 Based on Example 2, the gyro sensitive component 3 also includes a fiber optic ring base 32.

[0052] The bottom of the fiber ring base 32 is provided with mounting positions for the coupler 30 and the Y waveguide 31, so that the coupler 30 and the Y waveguide 31 are embedded in the bottom of the fiber ring base 32. The coupler 30 is connected to the fiber optic gyro signal processing circuit board 14 and the Y waveguide 31 through connecting wires. The top of the fiber ring base 32 is provided with an annular groove. The fiber ring 33 is installed on the annular groove of the fiber ring base 32 by bonding. The fiber ring 33 has two inlet ends. The two lines of the Y waveguide 31 are respectively connected to the two inlet ends of the fiber ring 33. The bottom profile of the fiber ring base 32 is provided with a through hole connected to the thermal insulation gasket 2, and its profile matches the profile of the thermal insulation gasket 2.

[0053] Preferably, the optical fiber ring base 32 is made of an iron-nickel alloy material.

[0054] With the structure of this embodiment, the optical fiber ring base 32 is made of an iron-nickel alloy material and has good magnetic shielding performance.

[0055] Example 4

[0056] Refer to the instruction manual Figure 7 On the basis of Embodiment 3, the gyro sensitive component 3 further includes a fiber ring cover 34. The fiber ring cover 34 is closed at the top and open at the bottom. The open end cover is buckled on the fiber ring 33. The fiber ring cover 34 is used to protect the fiber ring 33 and forms a fully enclosed structure with the fiber ring base 32. The bottom profile of the fiber ring cover 34 matches the profile of the fiber ring base 32. A through hole is opened at the bottom of the fiber ring cover 34. Bolts pass through the through hole of the fiber ring cover 34, the through hole of the fiber ring base 32, and the through hole of the thermal insulation gasket 2 in sequence, and then are screwed together with the internal threaded hole at the top of the gyro base 10.

[0057] Preferably, the optical fiber ring outer cover 34 is made of iron-nickel alloy material.

[0058] With the structure of this embodiment, the fiber ring cover 34 is made of an iron-nickel alloy material with good magnetic shielding performance. The fiber ring cover 34 and the fiber ring base 32 are connected by bolts, which not only reduces costs but also makes them easier to maintain than welding.

[0059] Refer to the instruction manual Figure 8 The working principle of the miniaturized fiber optic gyroscope with heat insulation design of the utility model is as follows: the laser emitted by the laser 12 enters the coupler 30 and then enters the Y waveguide 31. The Y waveguide 31 divides the light source into two paths, one path enters the fiber ring 33 in a clockwise direction, and the other path enters the fiber ring 33 in a counterclockwise direction. The two light sources return to the Y waveguide 31 after passing through the fiber ring 33, and then enter the coupler 30 through the Y waveguide 31. After passing through the coupler 30, they reach the detector 13 to produce a light wave interference effect. The detector 13 converts the interference light intensity into an electrical signal and transmits it to the fiber optic gyroscope signal processing circuit board 14. Due to the rotation of the fiber ring 33, the optical paths of the two light waves propagating in the opposite direction inside are different, so that there is a phase difference between the two light waves. The fiber optic gyroscope signal processing circuit board 14 calculates the angular velocity of the fiber ring 33 based on the phase difference analysis.

[0060] The utility model adopts a sunken integrated design of the laser 12 on the light source driving circuit board 11, so that the structure of the fiber optic gyroscope is more compact and meets the requirements of miniaturization. It can be used not only in conventional scenarios, but also in scenarios with strict space requirements, especially in the military field, such as tanks, armored vehicles and other mobile combat platforms, which require inertial navigation equipment that can be quickly deployed and moved. The miniaturized fiber optic gyroscope of the utility model is not only easy to carry and install, but also can better adapt to various complex combat environments. It has portability and flexibility, and also has good heat dissipation and heat insulation functions.

[0061] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A miniaturized fiber optic gyroscope with heat insulation design, characterized in that: It comprises a gyro heating component (1), a gyro sensitive component (3), and a heat insulating gasket (2) located between the gyro heating component (1) and the gyro sensitive component (3); The gyro heating component (1) comprises a light source and a control unit, wherein the middle region of the light source penetrates through the control unit and is fixed; the bottom of the gyro heating component (1) has a heat dissipation surface, and the heat dissipation surface is used to conduct the heat of the gyro heating component (1) to the outside; the gyro sensitive component (3) comprises an optical fiber ring (33) and a coupler (30) and a Y waveguide (31) for distributing light beams; the gyro heating component (1) is used to drive the light source to generate working light waves based on the control unit; and the thermal insulation gasket (2) is used to prevent the heat of the gyro heating component (1) from being conducted to the gyro sensitive component (3).

2. The miniaturized fiber optic gyroscope with heat insulation design according to claim 1, characterized in that: The gyro heating component (1) also includes a gyro base (10); the top of the gyro base (10) is provided with an opening, the closed surface of the bottom is the heat dissipation surface, the middle part has a cylindrical cavity with the same area as the top opening, the inner wall surface of the cavity is provided with a group of multiple bosses of the same height, each boss extends upward from the top of the heat dissipation surface along the inner wall surface of the cavity to a certain height, and the top surface of the boss is lower than the top surface of the gyro base (10).

3. The miniaturized fiber optic gyroscope with heat insulation design according to claim 2, characterized in that: The bottom of the heat dissipation surface is provided with a plurality of fins arranged at intervals, and the laying area of ​​the fins covers the bottom surface of the gyroscope base (10).

4. The miniaturized fiber optic gyroscope with heat insulation design according to claim 2, characterized in that: The light source of the gyro heating component (1) is a laser (12), and the control unit of the gyro heating component (1) comprises a light source driving circuit board (11) and a fiber optic gyro signal processing circuit board (14); the light source driving circuit board (11) is provided with a laser mounting opening, the laser (12) extends into the laser mounting opening, and a part of the laser (12) is sunk below the bottom of the light source driving circuit board (11); the bottom of the laser (12) has a bracket support plate with mounting holes, the heat dissipation surface is provided with a plurality of threaded holes matching the mounting holes of the bracket support plate of the laser (12), and the laser (12) is fixed to the heat dissipation surface by corresponding fasteners; the top of the boss of the gyro base (10) is provided with a threaded hole, the fiber optic gyro signal processing circuit board (14) is provided with an opening matching the boss, and the fiber optic gyro signal processing circuit board (14) is located above the laser (12) and fixed to the boss of the gyro base (10) by corresponding fasteners.

5. The miniaturized fiber optic gyroscope with heat insulation design according to claim 4, characterized in that: The laser (12) has a plurality of light source pins (120) on both sides, and the light source pins (120) are welded on the top surface of the light source driving circuit board (11).

6. The miniaturized fiber optic gyroscope with heat insulation design according to claim 2, characterized in that: The profile of the heat-insulating gasket (2) matches the profile of the top of the gyro base (10).

7. The miniaturized fiber optic gyroscope with heat insulation design according to claim 2, characterized in that: The gyro sensitive component (3) also includes an optical fiber ring base (32); the bottom of the optical fiber ring base (32) is provided with mounting positions for the coupler (30) and the Y-waveguide (31), and the top of the optical fiber ring base (32) is provided with an annular groove for fixing the optical fiber ring (33).

8. The miniaturized fiber optic gyroscope with heat insulation design according to claim 7, characterized in that: The gyro sensitive component (3) further comprises a fiber optic ring outer cover (34); the fiber optic ring outer cover (34) is closed at the top and open at the bottom, and the open end cover is buckled on the fiber optic ring (33) to form a fully enclosed structure with the fiber optic ring base (32); the fiber optic ring base (32) and the fiber optic ring outer cover (34) are connected by corresponding fasteners.

9. The miniaturized fiber optic gyroscope with heat insulation design according to claim 8, characterized in that: The optical fiber ring base (32) and the optical fiber ring outer cover (34) are made of an iron-nickel alloy material, and the iron-nickel alloy material is used to play a magnetic shielding role.

10. The miniaturized fiber optic gyroscope with heat insulation design according to claim 4, characterized in that: The gyro heating component (1) further comprises a detector located between the light source driving circuit board (11) and the fiber optic gyro signal processing circuit board (14); the fiber optic gyro signal processing circuit board (14) is connected to the detector and the Y waveguide (31) respectively via connecting lines.

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