CN110260852B

CN110260852B - Framework device and fiber-optic gyroscope inertial device with same

Info

Publication number: CN110260852B
Application number: CN201910565512.5A
Authority: CN
Inventors: 陈熙源; 马振; 虞翔; 方琳
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2021-09-28
Anticipated expiration: 2039-06-26
Also published as: WO2020259010A1; CN110260852A; LU101990B1

Abstract

The invention discloses a skeleton device and a fiber optic gyroscope inertial device with the skeleton device. The skeleton device is provided with a ring-type fixing support and a hollow frame with an open upper end. The cavity is divided into a fiber optic gyroscope accommodating cavity and a power component accommodating cavity, which provides a reasonable assembly space for the fiber optic gyroscope and the power component, and avoids the waste of space layout. And the heat dissipation holes are hollowed out on each side wall of the hollow frame to provide enough heat dissipation space. The heat emitted by the fiber optic gyroscope and power supply components can flow freely in the openings on the side walls and the top to avoid local heat. The measurement accuracy is affected, so that the fiber optic gyroscope inertial device equipped with the skeleton device has high reliability and environmental adaptability.

Description

Framework device and fiber-optic gyroscope inertial device with same

Technical Field

The invention relates to an inertia measuring device, in particular to a framework device and an optical fiber gyroscope inertia device with the framework device.

Background

The optical fiber gyroscope is an angular rate measuring instrument based on the Sagnac effect, has the technical advantages of simple structure, impact resistance and large dynamic range, has the use effects of low cost, long service life and high reliability, and is widely applied to the fields of aerospace, robot control, petroleum and coal mining and the like. When the temperature of the working environment of the optical fiber gyroscope changes, the measurement precision of the optical fiber gyroscope is influenced. Therefore, researchers at home and abroad make a great deal of research on the compensation of the temperature drift error of the optical fiber gyroscope. However, the spatial layout and the heat dissipation performance of the framework of the inertial device also have an important influence on the stability of the optical fiber gyroscope. Therefore, an effective and easily-engineered framework device of the fiber optic gyroscope is urgently needed to be designed so as to improve the environmental adaptability of the fiber optic gyroscope.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention provides the framework device which is reasonable in spatial layout, has sufficient heat dissipation space and can effectively improve the environmental adaptability of the optical fiber gyroscope.

Another object of the present invention is to provide a fiber optic gyroscope inertial device with the above framework apparatus.

The technical scheme is as follows: the invention relates to a framework device, which comprises a framework body and a ring-type fixed supporting piece; the framework body is provided with a base and a hollow frame extending upwards from the upper surface of the base; the hollow frame is of a hollow structure with an opening at the top end, and a support piece assembling plane is arranged in the hollow frame; the ring-type fixed support piece is arranged on the support piece assembly plane and divides the hollow inner cavity of the hollow frame into an upper cavity and a lower cavity, and the two cavities are respectively a fiber gyroscope accommodating cavity positioned at the lower part and a power supply assembly accommodating cavity positioned at the upper part; each side wall of the hollowed-out frame is provided with an upper radiating hole and a lower radiating hole, the upper radiating holes are communicated with the power supply assembly accommodating cavity, and the lower radiating holes are communicated with the optical fiber gyroscope accommodating cavity.

The inner surface of each side wall of the hollow frame is provided with a concave platform, the inner surface joints of the adjacent two side walls are provided with assembling platforms, the concave platforms and the assembling platforms are located on the same horizontal plane, and the concave platforms and the assembling platforms jointly form the assembling plane of the supporting piece.

The ring-type fixed supporting piece is provided with a supporting piece main body and a heat dissipation wiring hole, the supporting piece main body is arranged on the assembling platform, and the heat dissipation wiring hole penetrates through the middle position of the supporting piece main body.

The ring-type fixed supporting piece is also provided with positioning side wings which are in one-to-one correspondence with the concave stations, and the positioning side wings extend from the supporting piece main body to the corresponding concave stations and are clamped in the concave stations.

The ring type fixing support also has a plurality of bolt holes for mounting the fixing power supply module, the bolt holes being dispersedly arranged on the surface of the ring type fixing support.

And the connection part of the inner surfaces of two adjacent side walls of the hollow frame is provided with a connection stud for fixing the optical fiber gyroscope, and the connection stud is positioned below the assembling platform.

The inner surface of the side wall of the hollow frame below the assembly plane of the support part is provided with a circular arc-shaped part which limits the inner diameter of the optical fiber gyroscope accommodating cavity.

Further, the hollow frame is a cuboid hollow frame.

Corresponding to the framework device, the technical scheme adopted by the fiber-optic gyroscope inertial device with the framework device is as follows: the optical fiber gyroscope comprises an optical fiber gyroscope, a power supply module, a circuit board and a housing, wherein the optical fiber gyroscope is inversely fixed in an optical fiber gyroscope accommodating cavity; the power module and the circuit board are both arranged in the power assembly accommodating cavity and fixed on the ring-type fixed support piece; the circuit of the optical fiber gyroscope is connected to the circuit board after passing through the heat dissipation wiring hole; the housing is covered outside the hollow frame from top to bottom and is connected with the base in a sealing mode.

The outer diameter of the optical fiber gyroscope is consistent with the inner diameter of the optical fiber gyroscope accommodating cavity.

Has the advantages that: this skeleton device is provided with fixed support piece of ring type and cavity and upper end open-ended fretwork frame, separates into optical fiber gyroscope holding chamber and power supply module holding chamber through fixed support piece of ring type with the cavity inner chamber of fretwork frame, for optical fiber gyroscope and power supply module provide reasonable assembly space, avoids spatial layout's waste. And set up the louvre in each lateral wall fretwork of fretwork frame, provided sufficient heat dissipation space, the heat that optical fiber gyroscope and power supply module work were gived off can be in the trompil department free flow at lateral wall and top, avoids producing the influence because of local heat is too high to measurement accuracy to make the optical fiber gyroscope inertial device who is equipped with this skeleton device have higher reliability and environmental suitability.

Drawings

FIG. 1 is a schematic view of the skeleton body structure of the present invention;

FIG. 2 is a schematic top view of the skeleton body structure of the present invention;

FIG. 3 is a schematic view of the ring type fixing support of the present invention;

FIG. 4 is a schematic diagram of the internal structure of the fiber optic gyroscope inertial device of the present invention;

FIG. 5 is a schematic diagram of a fiber optic gyroscope according to the present invention;

FIG. 6 is a schematic diagram of the overall structure of the fiber optic gyroscope inertial device of the present invention;

fig. 7 is an exploded view of the internal structure of the fiber optic gyroscope inertial device of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 7, the present embodiment discloses a fiber optic gyroscope inertial device having a skeleton device, a fiber optic gyroscope 10, a power supply module 11, a circuit board 12, and a cover 13.

Wherein, the skeleton device includes skeleton body 1 and ring type fixed support piece 2.

Referring to fig. 1 and 2, the skeleton body 1 has a base 3 and a hollow frame 4, and the hollow frame 4 extends upward from an upper surface of the base 3.

The hollow frame 4 is a hollow cuboid structure with an open top end, concave platforms 43 are arranged at the middle positions of the inner surfaces of the four side walls, and an assembling platform 44 is arranged at the joint of the inner surfaces of the two adjacent side walls. The recessed platform 43 and the mounting platform 44 are located at the same horizontal plane, which defines the position of the support mounting plane inside the cut-out frame 4. The side wall of the hollow frame 4 is provided with an upper heat dissipation hole 41 and a lower heat dissipation hole 42. The ring-type fixed support 2 is mounted in the support assembly plane, and divides the hollow inner cavity of the hollow frame 4 into a fiber gyroscope accommodating cavity located at the lower part and a power supply assembly accommodating cavity located at the upper part. The upper heat dissipation holes 41 are communicated with the power supply component accommodating cavity, and the lower heat dissipation holes 42 are communicated with the optical fiber gyroscope accommodating cavity.

Referring to fig. 3, the ring-type fixing support 2 has a support body 21, a heat dissipating wiring hole 22, a positioning wing 23 and a plurality of bolt holes 24. Four corners of the support main body 21 are respectively disposed on the four mounting platforms 44, and the four positioning side wings 23 are respectively clamped in the four concave platforms 43, so as to fix the ring-type fixing support 2. The heat dissipation wiring hole 22 is opened in the middle of the support member main body 21, and is used for wiring on one hand and providing an upward flow path for heat in the lower optical fiber gyroscope accommodating cavity on the other hand. The bolt holes 24 are dispersedly arranged on the upper surface of the ring-type fixing support member 2 and are respectively used for fixing the power supply module 11 and the circuit board 12, and the bolt holes 24 for fixing the power supply module 11 and the circuit board 12 are arranged in a staggered manner, and have enough distance between the bolt holes and do not interfere with each other.

As shown in fig. 5, the optical fiber gyroscope 10 is substantially a cylinder, a screw hole 101 is formed in a side wall of the optical fiber gyroscope 10, the screw hole is matched with the connecting stud 45, the connecting stud 45 is disposed at a joint of inner surfaces of the side walls below the mounting platform 44, and the fixing of the optical fiber gyroscope 10 can be achieved by connecting the connecting stud and the mounting platform with screws.

Combine as figure 4 and figure 7, the embedded inversion of optical fiber gyroscope 10 is installed in optical fiber gyroscope holding intracavity, and the part that the lateral wall internal surface of hollow frame 4 is arc supports and leans on the periphery at optical fiber gyroscope 10, and the diameter of this part is unanimous with optical fiber gyroscope 10's external diameter to the gap is too big when avoiding processing preparation or assembly between the two and causes the waste of space and size.

The power module, which is composed of the power module 11 and the circuit board 12, is disposed in the power module accommodating chamber and is fixed to different bolt holes 24 of the ring-type fixing support 2 by screws 15. The circuit of the optical fiber gyroscope 10 passes through the heat dissipation wiring hole 22 and then is connected to the circuit board 12, and the power is supplied through the power module 11. The circuit board 12 is fixed to the optical fiber gyroscope 10 through the ring-type fixing support member 2, resonance is achieved, and additional factors affecting the measurement accuracy of the optical fiber gyroscope 10 can be reduced.

Finally, referring to fig. 6, the housing 13 is covered outside the hollow frame 4 from top to bottom, and is sealed with the base 3 by a sealing ring, and the fixing lugs are connected by screws to complete assembly and fixation. The cover shell 13 is used for moisture protection and improving the impact resistance of the fiber optic gyroscope inertial device, and the heat dissipation is not affected by the thin thickness of the cover shell.

Claims

1. A fiber optic gyroscope inertial device, characterized in that it comprises a skeleton device, a fiber optic gyroscope (10), a power module (11), a circuit board (12) and a cover (13); the skeleton device comprises a skeleton body ( 1) and a ring-type fixed support (2); the skeleton body (1) has a base (3) and a hollow frame (4) extending upward from the upper surface of the base (3); With a hollow structure with an open top, the hollow frame (4) has a support assembly plane; the annular fixed support (2) is mounted on the support assembly plane, and separates the hollow cavity of the hollow frame (4) There are two upper and lower chambers, the two chambers are respectively the fiber optic gyroscope accommodating cavity at the lower part and the power supply assembly accommodating cavity at the upper part; each side wall of the hollow frame (4) has an upper heat dissipation hole ( 41) and a lower heat dissipation hole (42), the upper heat dissipation hole (41) penetrates into the power supply assembly accommodating cavity, and the lower heat dissipation hole (42) penetrates into the fiber optic gyroscope accommodating cavity; the hollow frame The inner surface of each side wall of (4) is provided with a concave platform (43), and the connection between the inner surfaces of the two adjacent side walls has an assembly platform (44). The assembly platform (44) is located on the same horizontal plane, and the concave platform (43) and the assembly platform (44) together form the support assembly plane; the annular fixed support (2) has a support body (21) and a heat dissipation wiring a hole (22), the support body (21) is arranged on the assembling platform (44), and the heat dissipation wiring hole (22) penetrates and is arranged at a middle position of the support body (21);

A connection stud (45) for fixing the fiber optic gyroscope (10) is provided at the connection between the inner surfaces of the two adjacent side walls of the hollow frame (4), and the connection stud (45) is located in the assembly below the platform (44);

The inner surface of the side wall of the hollow frame (4) below the mounting plane of the support has a circular arc-shaped portion, and the portion defines the inner diameter of the fiber optic gyroscope accommodating cavity;

The fiber optic gyroscope (10) is inverted and fixed in the fiber optic gyroscope accommodating cavity; the power module (11) and the circuit board (12) are both arranged in the power supply assembly accommodating cavity and fixed on the On the ring-type fixed support (2), the power module (11) is located above the circuit board (12); the lines of the fiber optic gyroscope (10) pass through the heat dissipation wiring hole (22) and are connected to the circuit board ( 12) upper; the cover shell (13) is arranged on the outside of the hollow frame (4) from top to bottom, and is sealedly connected with the base (3).

2 . The fiber optic gyroscope inertial device according to claim 1 , wherein the annular fixed support ( 2 ) further has positioning flanks ( 23 ) corresponding to the concave platforms ( 43 ) one-to-one. 3 . The positioning flanks (23) extend from the support body (21) to the corresponding concave table (43), and are clamped in the concave table (43).

3 . The fiber optic gyroscope inertial device according to claim 1 , wherein the ring-type fixing support ( 2 ) further has a plurality of bolt holes ( 24 ) for installing and fixing power supply components, and the bolt holes ( 3 . 4 . 24) Dispersely arranged on the surface of the annular fixed support (2).

4 . The fiber optic gyroscope inertial device according to claim 1 , wherein the hollow frame ( 4 ) is a rectangular hollow frame. 5 .

5 . The fiber optic gyroscope inertial device according to claim 1 , wherein the outer diameter of the fiber optic gyroscope ( 10 ) is consistent with the inner diameter of the accommodating cavity of the fiber optic gyroscope. 6 .