Light and small fiber-optic gyroscope table body assembly

Abstract

The invention relates to an optical fiber inertial measurement device, in particular to a light and small optical fiber gyroscope platform body assembly, and aims to solve the problems that an optical fiber gyroscope and a circuit module corresponding to the optical fiber gyroscope are combined and then mounted on a platform body in the conventional optical fiber gyroscope platform body assembly, so that the appearance size of the platform body assembly is too large; the overall weight and the overall dimension of the optical fiber inertial measurement device are influenced, so that the optical fiber inertial measurement device is difficult to meet the technical requirements of light weight and miniaturization. According to the invention, three fiber-optic gyroscopes are fixedly mounted on one side of a positive X direction, one side of a negative Y direction and one side of a positive Z direction of a table body respectively, and three accelerometers are fixedly mounted on one side of the positive X direction, one side of the positive Y direction and one side of the positive Z direction of the table body respectively; the information processing module and the gyroscope demodulation module are sequentially and fixedly mounted on the table body from outside to inside by utilizing a space between one side of the negative X direction of the table body and the Y-direction fiber-optic gyroscope and the Z-direction fiber-optic gyroscope, and the light source and the driving module are both arranged on the inner side of the gyroscope demodulation module and are both positioned in a first mounting cavity of the table body.

Description

Technical Field

[0001] This invention relates to an optical fiber inertial measurement device, specifically to a lightweight optical fiber gyroscope stage assembly. Background Technology

[0002] Fiber optic gyroscopes are the core components of fiber optic inertial measurement units (FTMUs). Their main function is to provide attitude calculation and positioning information for the equipment, improving its maneuverability and survivability. Their working accuracy and reliability directly affect the accuracy and reliability of the entire device. The design purpose of the fiber optic gyroscope platform assembly is to provide a stable and reliable mounting reference and support strength for the fiber optic gyroscope, accelerometer, and other high-precision inertial components, thus providing a good working environment for the inertial devices.

[0003] The fiber optic gyroscope platform assembly can receive commands from an external carrier device and provide the external device with initial alignment parameters such as apparent acceleration and angular velocity in three directions of the carrier coordinate system; it can measure the acceleration of the carrier device relative to the Earth and output the component of this acceleration along the carrier device coordinate system through a serial interface; it can measure and calculate the angular velocity of the carrier relative to the Earth and output the angular velocity along the carrier coordinate system through a serial interface.

[0004] Currently, when designing fiber optic gyroscope platform components, the fiber optic gyroscope is directly mounted onto the platform via its mechanical interface. Traditional Type 60 fiber optic gyroscopes are large and heavy. Integrating the gyroscope and its corresponding circuit module onto the platform results in an excessively large platform component, which in turn affects the overall weight and size of the fiber optic inertial measurement unit (Fiber Optic Inertial Measurement Unit), making it difficult to meet the technical requirements for miniaturization. Summary of the Invention

[0005] The purpose of this invention is to solve the technical problem that existing fiber optic gyroscope stage assemblies, which combine the fiber optic gyroscope and its corresponding circuit module and install them on the stage, result in an excessively large stage assembly size, which in turn affects the overall weight and size of the fiber optic inertial measurement device, making it difficult for the fiber optic inertial measurement device to meet the requirements of miniaturization. Therefore, this invention provides a lightweight and compact fiber optic gyroscope stage assembly.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A lightweight fiber optic gyroscope stage assembly includes a stage and, fixedly mounted on the stage, X-axis fiber optic gyroscopes, Y-axis fiber optic gyroscopes, Z-axis fiber optic gyroscopes, X-axis accelerometers, Y-axis accelerometers, Z-axis accelerometers, an information processing module, a gyroscope demodulation module, a light source, a drive module, a nine-point connector, and a temperature sensor; its special feature is that: The X-axis fiber optic gyroscope, Y-axis fiber optic gyroscope, and Z-axis fiber optic gyroscope are arranged orthogonally to each other and are fixedly installed on the positive X-axis side, negative Y-axis side, and positive Z-axis side of the platform, respectively. The X-axis accelerometer, Y-axis accelerometer, and Z-axis accelerometer are arranged orthogonally to each other and are fixedly installed on the X-axis side, Y-axis side, and Z-axis side of the platform, respectively. Along the Y direction, the X-axis fiber optic gyroscope, Y-axis fiber optic gyroscope, and Z-axis fiber optic gyroscope are located on the same side, while the X-axis accelerometer, Y-axis accelerometer, and Z-axis accelerometer are located on the other side. The information processing module and the gyroscope demodulation module are fixedly installed on the platform from the outside to the inside, utilizing the space between the negative X-direction side of the platform and the Y-direction fiber optic gyroscope and the Z-direction fiber optic gyroscope. The negative X-direction side surface of the platform is recessed towards the positive X-direction to form a first mounting cavity. The light source and the drive module are both located inside the gyroscope demodulation module and are both located within the first mounting cavity.

[0007] Furthermore, a first shielding plate is fixedly installed on the top of the X-axis fiber optic gyroscope, the Y-axis fiber optic gyroscope, and the Z-axis fiber optic gyroscope; A second shielding plate is provided between the light source and the gyroscope demodulation module, and the second shielding plate is fixedly installed on the platform.

[0008] Furthermore, a portion of the surface on one side of the platform in the positive X direction is recessed in the negative X direction to form a second mounting cavity, in which the X-axis fiber optic gyroscope and the X-axis accelerometer are both fixedly mounted.

[0009] Furthermore, the nine-point connector is fixedly installed on one side of the platform in the positive X direction, and is located between the X-direction fiber optic gyroscope and the X-direction accelerometer.

[0010] Furthermore, the positive Y-direction side surface, the positive Z-direction side surface, and the negative X-direction side surface of the platform are all provided with wire holes that communicate with the second mounting cavity.

[0011] Furthermore, the information processing module and the gyroscope demodulation module do not exceed the edges of the Y-axis fiber optic gyroscope and the Z-axis fiber optic gyroscope in the negative X direction, do not exceed the edge of the platform in the negative Z direction, and do not exceed the edge of the Y-axis accelerometer in the positive Y direction.

[0012] Furthermore, the temperature sensor is fixedly installed on one side of the platform in the positive X direction, next to the X-axis accelerometer.

[0013] Furthermore, fiber optic gyroscope mounting structures are provided on the surfaces of the positive X-direction side, the negative Y-direction side, and the positive Z-direction side of the platform. Each fiber optic gyroscope mounting structure includes a pair of crescent-shaped bosses arranged opposite each other on the platform. Each crescent-shaped boss is provided with two fiber optic gyroscope mounting holes. The X-direction fiber optic gyroscope, Y-direction fiber optic gyroscope, and Z-direction fiber optic gyroscope are respectively fixedly mounted on the corresponding pair of crescent-shaped bosses through the corresponding two pairs of fiber optic gyroscope mounting holes.

[0014] Furthermore, accelerometer mounting structures are provided on the surfaces of the X-axis side, Y-axis side, and Z-axis side of the platform. Each accelerometer mounting structure includes a circular groove and three accelerometer mounting holes on the platform. The X-axis accelerometer, Y-axis accelerometer, and Z-axis accelerometer are fixedly mounted on the corresponding circular groove through the corresponding three accelerometer mounting holes.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: 1. The lightweight fiber optic gyroscope platform assembly of the present invention comprises an X-axis fiber optic gyroscope, a Y-axis fiber optic gyroscope, and a Z-axis fiber optic gyroscope arranged orthogonally and fixedly installed on one side of the platform in the positive X direction, the negative Y direction, and the positive Z direction, respectively; and an X-axis accelerometer, a Y-axis accelerometer, and a Z-axis accelerometer arranged orthogonally and fixedly installed on one side of the platform in the positive X direction, the positive Y direction, and the positive Z direction, respectively. Along the Y direction, the X-axis, Y-axis, and Z-axis fiber optic gyroscopes are located on the same side, while the X-axis, Y-axis, and Z-axis accelerometers are located on the other side. The processing module and gyroscope demodulation module are fixedly mounted on the stage from the outside to the inside using the space between the negative X-direction side of the stage and the Y-direction and Z-direction fiber optic gyroscopes. The light source and drive module are both located inside the gyroscope demodulation module and are located in the first mounting cavity of the stage. This allows the three fiber optic gyroscopes, three accelerometers, information processing module, gyroscope demodulation module, light source and drive module to be rationally arranged on the stage, which effectively improves the utilization rate of the inertial measurement space, realizes the integrated design of the stage and fiber optic gyroscopes, reduces the weight of the stage components, and thus achieves the goal of miniaturizing the fiber optic inertial measurement device. 2. The lightweight fiber optic gyroscope stage assembly of the present invention, by setting a first shielding plate on the top of the X-axis fiber optic gyroscope, Y-axis fiber optic gyroscope and Z-axis fiber optic gyroscope, and setting a second shielding plate between the light source and the gyroscope demodulation module, isolates and shields the fiber optic gyroscope and the light source, realizes the anti-electromagnetic interference design of the fiber optic gyroscope stage assembly, and thus makes the working reliability of the lightweight fiber optic gyroscope stage assembly higher. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a lightweight fiber optic gyroscope platform assembly according to the present invention; Figure 2 This is a schematic diagram of the structure in the positive X direction of an embodiment of a lightweight fiber optic gyroscope stage assembly according to the present invention; Figure 3 This is a schematic diagram of the structure of a lightweight fiber optic gyroscope platform assembly of the present invention without an X-axis fiber optic gyroscope and X-axis accelerometer in the positive X direction; Figure 4This is a schematic diagram of the negative Y-direction structure of a lightweight fiber optic gyroscope platform assembly of the present invention without a Y-direction fiber optic gyroscope. Figure 5 This is a schematic diagram of the structure of a lightweight fiber optic gyroscope stage assembly without Y-axis accelerometer in the positive Y direction, as described in an embodiment of the present invention. Figure 6 This is a schematic diagram of the structure of a lightweight fiber optic gyroscope platform assembly of the present invention without a Z-axis fiber optic gyroscope and a Z-axis accelerometer in the positive Z direction; Figure 7 This is a three-dimensional structural diagram of the light source in an embodiment of a lightweight fiber optic gyroscope stage assembly of the present invention; Figure 8 This is a three-dimensional structural diagram of the driving module in an embodiment of a lightweight fiber optic gyroscope stage assembly of the present invention. Figure 9 This is a three-dimensional structural diagram of the gyroscope demodulation module in an embodiment of a lightweight fiber optic gyroscope platform assembly of the present invention. Figure 10 This is a three-dimensional structural diagram of the information processing module in an embodiment of a lightweight fiber optic gyroscope platform assembly of the present invention. Figure 11 This is a three-dimensional structural diagram of the nine-point connector in an embodiment of a lightweight fiber optic gyroscope platform assembly of the present invention.

[0017] The attached figures are labeled as follows: 1-Stage, 2-X-axis fiber optic gyroscope, 3-Y-axis fiber optic gyroscope, 4-Z-axis fiber optic gyroscope, 5-X-axis accelerometer, 6-Y-axis accelerometer, 7-Z-axis accelerometer, 8-Information processing module, 9-Gyroscope demodulation module, 10-Light source, 11-Drive module, 12-Nine-point connector, 13-Temperature sensor, 14-First shielding plate, 15-Second shielding plate, 16-Crescent-shaped boss, 17-Fiber optic gyroscope mounting hole, 18-Circular groove, 19-Accelerometer mounting hole, 20-Wire hole, 21-Second mounting cavity. Detailed Implementation

[0018] To make the objectives, advantages and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] In the description of this invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] refer to Figures 1 to 11The present invention provides a lightweight fiber optic gyroscope platform assembly, comprising a platform 1 and an X-axis fiber optic gyroscope 2, a Y-axis fiber optic gyroscope 3, a Z-axis fiber optic gyroscope 4, an X-axis accelerometer 5, a Y-axis accelerometer 6, a Z-axis accelerometer 7, an information processing module 8, a gyroscope demodulation module 9, a light source 10, a drive module 11, a nine-point connector 12, and a temperature sensor 13, all fixedly mounted on the platform 1.

[0021] like Figure 1 As shown, a portion of the surface of the platform 1 in the positive X direction is recessed towards the negative X direction to form a second mounting cavity 21. The X-direction fiber optic gyroscope 2 and the X-direction accelerometer 5 are both fixedly mounted within the second mounting cavity 21. The Y-direction accelerometer 6 is fixedly mounted on the positive Y-direction side of the platform 1, the Y-direction fiber optic gyroscope 3 is fixedly mounted on the negative Y-direction side of the platform 1, and the Z-direction fiber optic gyroscope 4 and the Z-direction accelerometer 7 are both fixedly mounted on the positive Z-direction side of the platform 1. Specifically, along the Y direction, the X-direction fiber optic gyroscope 2, Y-direction fiber optic gyroscope 3, and Z-direction fiber optic gyroscope 4 are located on the same side, while the X-direction accelerometer 5, Y-direction accelerometer 6, and Z-direction accelerometer 7 are located on the other side. This arrangement provides a reasonable layout for the three fiber optic gyroscopes and three accelerometers, and also ensures efficient gyroscope wiring and fiber routing. In addition, arranging the X-axis fiber optic gyroscope 2, Y-axis fiber optic gyroscope 3, and Z-axis fiber optic gyroscope 4 orthogonally around the periphery of the stage 1, and arranging the X-axis accelerometer 5, Y-axis accelerometer 6, and Z-axis accelerometer 7 orthogonally around the periphery of the stage 1, makes installation and disassembly easier compared to arranging the fiber optic gyroscopes or accelerometers inside the stage 1. At the same time, the ease of installation of the fiber optic gyroscopes and accelerometers also helps to ensure the installation accuracy, stability, and reliability of the fiber optic gyroscopes and accelerometers.

[0022] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, fiber optic gyroscope mounting structures are provided on the surfaces of the positive X-direction side, negative Y-direction side, and positive Z-direction side of the platform 1. The X-direction fiber optic gyroscope 2, Y-direction fiber optic gyroscope 3, and Z-direction fiber optic gyroscope 4 are fixedly mounted on the platform 1 through their respective mounting structures. Each fiber optic gyroscope mounting structure includes a pair of crescent-shaped bosses 16 opposite each other on the platform 1. Each crescent-shaped boss 16 has two fiber optic gyroscope mounting holes 17. The X-direction fiber optic gyroscope 2, Y-direction fiber optic gyroscope 3, and Z-direction fiber optic gyroscope 4 are fixedly mounted on their respective pairs of crescent-shaped bosses 16 through their two pairs of mounting holes 17. Figure 1 , Figure 3 , Figure 5 and Figure 6As shown, accelerometer mounting structures are provided on the surfaces of the platform 1 in the X, Y, and Z directions. The X-axis accelerometer 5, Y-axis accelerometer 6, and Z-axis accelerometer 7 are fixedly mounted on the platform 1 through their respective mounting structures. Each accelerometer mounting structure includes a circular groove 18 and three accelerometer mounting holes 19 on the platform 1. The X-axis accelerometer 5, Y-axis accelerometer 6, and Z-axis accelerometer 7 are fixedly mounted on their respective circular grooves 18 through the three mounting holes 19. This lightweight fiber optic gyroscope platform assembly allows for independent assembly and disassembly of the three fiber optic gyroscopes and three accelerometers, eliminating the need to disassemble other components. This facilitates maintenance and reduces maintenance difficulty and time costs.

[0023] like Figure 1 , Figure 2 , Figure 4 , Figure 9 and Figure 10 As shown, multiple mounting protrusions are provided on the surface of the platform 1 on the negative X-direction side. The information processing module 8 and the gyroscope demodulation module 9 are sequentially fixed to the negative X-direction side of the platform 1 from the outside to the inside via these mounting protrusions. Furthermore, neither the information processing module 8 nor the gyroscope demodulation module 9 extends beyond the edges of the Y-direction fiber optic gyroscope 3 and the Z-direction fiber optic gyroscope 4 in the negative X-direction, nor beyond the edge of the platform 1 in the negative Z-direction, and neither beyond the edge of the Y-direction accelerometer 6 in the positive Y-direction. Figure 1 , Figure 7 and Figure 8 As shown, a portion of the surface on the negative X-direction side of the platform 1 is recessed towards the positive X-direction to form a first mounting cavity. The light source 10 and the drive module 11 are both located inside the gyroscope demodulation module 9 and are fixedly mounted within the first mounting cavity using screws. By utilizing the first mounting cavity of the platform 1 and the space between the negative X-direction side of the platform 1 and the Y-direction fiber optic gyroscope 3 and the Z-direction fiber optic gyroscope 4, the information processing module 8, the gyroscope demodulation module 9, the light source 10, and the drive module 11 can be installed, effectively improving space utilization and thus achieving a reduction in size.

[0024] like Figure 2 As shown, the temperature sensor 13 is fixedly installed on the positive X-direction side of the platform 1 and is located next to the X-direction accelerometer 5.

[0025] like Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 11As shown, in order to facilitate wiring and fiber routing, the nine-point connector 12 is fixedly installed on the positive X-direction side of the platform 1 and located between the X-direction fiber optic gyroscope 2 and the X-direction accelerometer 5. Furthermore, the positive Y-direction side surface, the positive Z-direction side surface, and the negative X-direction side surface of the platform 1 are all provided with wire-passing holes 20 that communicate with the second mounting cavity 21.

[0026] like Figure 1 and Figure 2 As shown, a first shielding plate 14 is fixedly installed on the top of the X-direction fiber optic gyroscope 2, the Y-direction fiber optic gyroscope 3, and the Z-direction fiber optic gyroscope 4; a second shielding plate 15 is provided between the light source 10 and the gyroscope demodulation module 9; a shielding plate mounting boss is provided on the negative X-direction side surface of the platform 1, and the second shielding plate 15 is fixedly installed on the platform 1 through the shielding plate mounting boss. By setting the first shielding plate 14 and the second shielding plate 15, the fiber optic gyroscope and the light source 10 of the fiber optic gyroscope platform assembly are isolated and shielded, realizing the electromagnetic interference resistance design of the fiber optic gyroscope platform assembly, effectively avoiding external electromagnetic interference to the gyroscope, improving the working reliability of the fiber optic gyroscope, and thus making the working reliability of this lightweight fiber optic gyroscope platform assembly stronger.

[0027] The lightweight fiber optic gyroscope platform assembly of the present invention, by placing the fiber optic gyroscope, accelerometer and the like on the periphery of the platform 1, reduces the hollow design of the platform 1, which can reduce damage to the structure of the platform 1, ensure the integrity of the platform 1, help the platform 1 obtain sufficient rigidity and strength, and make the platform 1 have good processing and assembly processability.

[0028] In this embodiment, in order to further reduce the weight of the stage 1, the cross section of the stage 1 is obtained through topology optimization. During the optimization process, in order to make the stage 1 have good machining and assembly processability, while meeting the requirements of the fiber optic inertial measurement device for miniaturization and ensuring the vibration characteristics requirements of the fiber optic gyroscope and accelerometer, the mounting surface of the fiber optic gyroscope is thickened as much as possible to obtain sufficient rigidity and strength and improve installation stability.

[0029] The lightweight fiber optic gyroscope stage assembly of the present invention rationally arranges the X-axis fiber optic gyroscope 2, Y-axis fiber optic gyroscope 3, Z-axis fiber optic gyroscope 4, X-axis accelerometer 5, Y-axis accelerometer 6, Z-axis accelerometer 7, information processing module 8, gyroscope demodulation module 9, light source 10, drive module 11, nine-point connector 12, and temperature sensor 13 on the stage 1, effectively improving the utilization rate of the inertial measurement unit space, realizing the integrated design of the stage and fiber optic gyroscope, reducing the weight of the stage assembly. Compared with the traditional 60-type fiber optic gyroscope stage assembly, the weight of the fiber optic inertial measurement device is reduced by about 31%, achieving the goal of miniaturization of the fiber optic inertial measurement device.

[0030] The contents not described in detail in this specification are common knowledge to those skilled in the art.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the specific technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A light and small optical fiber gyroscope platform assembly, comprising a platform (1), and an X-direction optical fiber gyroscope (2), a Y-direction optical fiber gyroscope (3), a Z-direction optical fiber gyroscope (4), an X-direction accelerometer (5), a Y-direction accelerometer (6), a Z-direction accelerometer (7), an information processing module (8), a gyro demodulation module (9), a light source (10), a driving module (11), a nine-point terminal (12) and a temperature sensor (13) fixedly installed on the platform (1), characterized in that: the X-direction optical fiber gyroscope (2), the Y-direction optical fiber gyroscope (3) and the Z-direction optical fiber gyroscope (4) are arranged orthogonally to each other and are fixedly installed on the positive X-direction side, the negative Y-direction side and the positive Z-direction side of the platform (1) respectively; the X-direction accelerometer (5), the Y-direction accelerometer (6) and the Z-direction accelerometer (7) are arranged orthogonally to each other and are fixedly installed on the positive X-direction side, the positive Y-direction side and the positive Z-direction side of the platform (1) respectively; along the Y-direction, the X-direction optical fiber gyroscope (2), the Y-direction optical fiber gyroscope (3) and the Z-direction optical fiber gyroscope (4) are located on one side, and the X-direction accelerometer (5), the Y-direction accelerometer (6) and the Z-direction accelerometer (7) are located on the other side; the information processing module (8) and the gyro demodulation module (9) are fixedly installed on the platform (1) from the outside to the inside by using the space between the negative X-direction side of the platform (1) and the Y-direction optical fiber gyroscope (3) and the Z-direction optical fiber gyroscope (4) ; the negative X-direction side surface of the platform (1) is recessed towards the positive X-direction to form a first installation cavity, and the light source (10) and the driving module (11) are both arranged on the inside of the gyro demodulation module (9) and are both located in the first installation cavity. 2.The light and small optical fiber gyroscope platform assembly according to claim 1, characterized in that: first shielding plates (14) are fixedly installed on the top of the X-direction optical fiber gyroscope (2), the Y-direction optical fiber gyroscope (3) and the Z-direction optical fiber gyroscope (4) respectively; a second shielding plate (15) is arranged between the light source (10) and the gyro demodulation module (9), and the second shielding plate (15) is fixedly installed on the platform (1). 3.The light and small optical fiber gyroscope platform assembly according to claim 1, characterized in that: a second installation cavity (21) is formed by recessing the positive X-direction side surface of the platform (1) towards the negative X-direction, and the X-direction optical fiber gyroscope (2) and the X-direction accelerometer (5) are both fixedly installed in the second installation cavity (21). 4.The light and small optical fiber gyroscope platform assembly according to claim 3, characterized in that: the nine-point terminal (12) is fixedly installed on the positive X-direction side of the platform (1) and is located between the X-direction optical fiber gyroscope (2) and the X-direction accelerometer (5). 5.The light and small optical fiber gyroscope platform assembly according to claim 4, characterized in that: a threading hole (20) is arranged on the positive Y-direction side surface, the positive Z-direction side surface and the negative X-direction side surface of the platform (1) and communicates with the second installation cavity (21). 6.The light and small optical fiber gyroscope platform assembly according to claim 3, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The information processing module (8) and the gyro demodulation module (9) are not beyond the edge of the Y-axis fiber-optic gyroscope (3) and the Z-axis fiber-optic gyroscope (4) in the negative X direction, are not beyond the edge of the platform (1) in the negative Z direction, and are not beyond the edge of the Y-axis accelerometer (6) in the positive Y direction.

7. The light and small fiber-optic gyroscope platform assembly according to any one of claims 1-6, characterized in that: The temperature sensor (13) is fixedly installed on the positive X direction side of the platform (1) and beside the X-axis accelerometer (5).

8. The light and small fiber-optic gyroscope platform assembly according to any one of claims 1-6, characterized in that: The positive X direction side, the negative Y direction side and the positive Z direction side of the platform (1) are each provided with a fiber-optic gyroscope mounting structure, each of the fiber-optic gyroscope mounting structures comprises a pair of crescent-shaped bosses (16) oppositely arranged on the platform (1), two fiber-optic gyroscope mounting holes (17) are arranged on each of the crescent-shaped bosses (16), and the X-axis fiber-optic gyroscope (2), the Y-axis fiber-optic gyroscope (3) and the Z-axis fiber-optic gyroscope (4) are fixedly installed on the corresponding pair of crescent-shaped bosses (16) through the corresponding two pairs of fiber-optic gyroscope mounting holes (17).

9. The light and small fiber-optic gyroscope platform assembly according to any one of claims 1-6, characterized in that: The positive X direction side, the positive Y direction side and the positive Z direction side of the platform (1) are each provided with an accelerometer mounting structure, each of the accelerometer mounting structures comprises a circular groove (18) and three accelerometer mounting holes (19) arranged on the platform (1), and the X-axis accelerometer (5), the Y-axis accelerometer (6) and the Z-axis accelerometer (7) are fixedly installed on the corresponding circular groove (18) through the corresponding three accelerometer mounting holes (19).

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