CN216695029U

CN216695029U - Positioning accuracy evaluation system based on inertial navigation

Info

Publication number: CN216695029U
Application number: CN202123332289.1U
Authority: CN
Inventors: 徐才秀; 刘璇; 毛峰; 胡宁
Original assignee: Jiangsu Beidou Satellite Navigation Testing Center Co ltd
Current assignee: Jiangsu Beidou Satellite Navigation Testing Center Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-07
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to the technical field of navigation and positioning, and discloses a positioning accuracy evaluation system based on inertial navigation, which comprises an inner casing, wherein an installation seat is arranged in the inner casing, an inertial positioning measurement component is fixedly connected to the upper end of the installation seat, temperature control covers are fixedly connected to two inner side walls on different sides of the inner casing, an electric heating element component and a refrigerating element component are respectively and fixedly arranged in the two temperature control covers, vent holes are respectively formed in the upper end and the lower end of each of the two temperature control covers, the inner casing is connected with a temperature adjusting mechanism, an outer casing is sleeved on the outer side of the inner casing, and temperature insulation cotton is fixedly filled between the outer casing and the inner casing. The utility model reduces the influence of temperature, avoids the phenomenon of larger deviation of the measurement and evaluation result caused by temperature, can automatically regulate and control temperature, has uniform temperature distribution, and has the function of anti-seismic protection.

Description

Positioning accuracy evaluation system based on inertial navigation

Technical Field

The utility model relates to the technical field of navigation and positioning, in particular to a positioning accuracy evaluation system based on inertial navigation.

Background

Inertial navigation is based on Newton's inertial principle, and uses inertial element (accelerometer) to measure the acceleration of vehicle itself, and obtains speed and position through integration and calculation, so as to achieve the purpose of positioning the vehicle navigation.

In the process of implementing the application, the inventor finds that at least the following problems exist in the technology, an inertial element is matched with a gyroscope, the acceleration of the inertial element can be continuously measured, then a speed component is obtained through integral operation, a position coordinate signal in one direction is obtained through integration again, instrument measurement results in three coordinate directions are combined into a motion curve and a space position where an aircraft is located at each moment is given, but in the actual use process, because the use environment of an inertial navigation positioning device is uncertain, the temperature in a machine shell is influenced by the external environment, high and low temperatures easily cause certain influences on components such as electronic devices, metal springs and the like in the machine shell, the precision of the measurement result is influenced, and the evaluation of the positioning precision is greatly deviated, and therefore, the positioning precision evaluation system based on the inertial navigation is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that in the prior art, because the use environment of an inertial navigation positioning device is uncertain, the temperature in a machine shell is influenced by the external environment, and high and low temperatures easily influence components such as electronic devices, metal springs and the like in the machine shell to a certain extent, the accuracy of a measurement result is influenced, and the estimation of the positioning accuracy has larger deviation, and provides a positioning accuracy estimation system based on inertial navigation.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a positioning accuracy evaluation system based on inertial navigation, includes the inner casing, the inside of inner casing is equipped with the mount pad, the upper end fixedly connected with inertial positioning survey subassembly of mount pad, two the equal fixedly connected with control by temperature change cover of two inside walls of the different side of inner casing, two the inside of control by temperature change cover is fixed electric heat piece subassembly and the refrigeration piece subassembly of being equipped with respectively, two the ventilation hole has all been seted up at the upper and lower both ends of control by temperature change cover, the inner casing is connected with the mechanism that adjusts the temperature, the outside cover of inner casing is equipped with the outer casing, common fixed packing has the temperature cotton between outer casing and the inner casing.

Preferably, the temperature adjusting mechanism comprises a round cover fixedly inserted at the upper end of the inner casing, a cylinder is fixedly inserted at the upper end of the round cover, a partition plate is fixedly arranged at the upper side inside the cylinder, the upper end and the lower end of the partition plate are respectively and fixedly connected with a single chip microcomputer and a temperature sensor, the single chip microcomputer is in signal connection with the temperature sensor, and the single chip microcomputer is respectively and electrically connected with the electric heating piece assembly and the refrigerating piece assembly.

Preferably, the inside of circle cover is fixed and is equipped with the micro-fan, the equal fixedly connected with a plurality of circulating pipes in the position that the lateral wall of circle cover is located micro-fan top, every the one end that the circle cover was kept away from to the circulating pipe all runs through outer casing, the upper end setting that separates the cotton and interior casing in proper order.

Preferably, a rubber shock pad is fixedly arranged between the lower inner side wall of the mounting seat and the inner casing, a plurality of round holes are formed in the upper end of the rubber shock pad, and a shock absorption spring is fixedly arranged at the position inside each round hole between the lower inner side wall of the mounting seat and the inner casing.

Preferably, the outer casing, the heat insulation cotton and the inner casing are provided with openings, the T-shaped cover plate is movably inserted into the openings, the side wall of the T-shaped cover plate is in threaded connection with a group of mounting bolts, and the rod wall of each mounting bolt is in threaded connection with the outer side wall of the outer casing.

Preferably, the side wall of the T-shaped cover plate is fixedly connected with a sealing washer, and the side wall of the sealing washer is abutted to the outer side wall of the outer casing.

Preferably, a conical sleeve is fixedly arranged between the outer side wall of the circular cover and the upper end of the outer casing, and each circulating pipe is arranged in the conical sleeve.

Compared with the prior art, the utility model provides a positioning accuracy evaluation system based on inertial navigation, which has the following beneficial effects:

1. this positioning accuracy evaluation system based on inertial navigation, inner casing through being equipped with, the mount pad, inertial positioning survey subassembly, can carry out evaluation system to positioning accuracy through inertial navigation and use, cover through two control by temperature change that are equipped with, mutually supporting of electric heat piece subassembly and refrigeration piece subassembly, can regulate and control the inside temperature of inner casing, so that its inside temperature is located suitable temperature range, reduce the influence of temperature to inertial positioning survey subassembly, avoid consequently and the survey evaluation result that leads to the problem of great deviation appears, through the outer casing that is equipped with and separate the cotton mutually supporting of temperature, can reduce the inside influence of external environment temperature to inner casing, also can reduce the inside temperature loss of inner casing, be convenient for the accuse temperature.

2. This positioning accuracy evaluation system based on inertial navigation, through the dome that is equipped with, the barrel, the baffle, mutually supporting of singlechip and temperature sensor, can carry out real-time supervision to the temperature, and regulate and control the temperature according to the monitoring result, high durability and convenient use, mutually supporting through the miniature fan that is equipped with and a plurality of circulating pipe, can make the inside temperature cycle of interior casing flow, the temperature monitoring of being convenient for, also can do benefit to the inside even balance of temperature of interior casing, mutually supporting through the rubber shock pad that is equipped with and a plurality of damping spring, can reduce the influence of the vibrations that the carrier removed the in-process and produced to inertial positioning survey subassembly.

The device has the advantages that the influence of temperature is reduced, the phenomenon of larger deviation of a measurement and evaluation result caused by temperature is avoided, meanwhile, the temperature can be automatically regulated and controlled, the temperature distribution is uniform, and the device has an anti-seismic protection function.

Drawings

Fig. 1 is a schematic structural diagram of a positioning accuracy evaluation system based on inertial navigation according to the present invention;

fig. 2 is a schematic top view of the housing of fig. 1.

In the figure: 1 inner machine shell, 2 mounting seats, 3 inertia positioning measuring components, 4 temperature control covers, 5 electric heating sheet components, 6 refrigerating sheet components, 7 outer machine shell, 8 temperature insulation cotton, 9 round covers, 10 cylinder bodies, 11 partition plates, 12 single chip microcomputers, 13 temperature sensors, 14 micro fans, 15 circulating pipes, 16 rubber shock pads, 17 shock absorbing springs, 18T-shaped cover plates, 19 mounting bolts, 20 sealing gaskets and 21 conical sleeves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Embodiment 1 refers to fig. 1-2, a positioning accuracy evaluation system based on inertial navigation, including interior casing 1, the inside of interior casing 1 is equipped with mount pad 2, the upper end fixedly connected with inertial positioning survey subassembly 3 of mount pad 2, the equal fixedly connected with control by temperature change cover 4 of two inside walls of interior casing 1 heteropleural side, the inside of two control by temperature change covers 4 is fixed electric heat piece subassembly 5 and the refrigeration piece subassembly 6 of being equipped with respectively, the ventilation hole has all been seted up at the upper and lower both ends of two control by temperature change covers 4, interior casing 1 is connected with the mechanism that adjusts the temperature, the outside cover of interior casing 1 is equipped with outer casing 7, it has thermal-insulated cotton 8 to fix the packing jointly between outer casing 7 and the interior casing 1.

The mechanism that adjusts the temperature is including fixed circular cover 9 of pegging graft in inner casing 1 upper end, the fixed grafting in upper end of circular cover 9 has barrel 10, the fixed baffle 11 that is equipped with of inside upside of barrel 10, the upper and lower both ends difference fixedly connected with singlechip 12 and temperature sensor 13 of baffle 11, singlechip 12 and temperature sensor 13 signal connection, singlechip 12 is connected with electric heat piece subassembly 5 and refrigeration piece subassembly 6 electricity respectively, through temperature sensor 13, can carry out real-time monitoring to the inside temperature of inner casing 1, when the temperature range of monitoring surpasses or is less than the default scope, transmission signal gives singlechip 12, singlechip 12 is according to the work of signal control electric heat piece subassembly 5 or refrigeration piece subassembly 6, in order to reach the function of automatic temperature adjustment, high durability and convenient use.

The opening has been seted up jointly to outer casing 7, the lateral wall that separates temperature cotton 8 and interior casing 1, and the activity of open-ended inside is pegged graft and is had T shape apron 18, and the lateral wall threaded connection of T shape apron 18 has a set of construction bolt 19, and every construction bolt 19's pole wall all with outer casing 7's lateral wall threaded connection, can be convenient for overhaul the inside component of interior casing 1.

The side wall of the T-shaped cover plate 18 is fixedly connected with a sealing gasket 20, the side wall of the sealing gasket 20 is abutted to the outer side wall of the outer shell 7, and the sealing performance after the T-shaped cover plate 18 and the outer shell 7 are connected can be improved through the sealing gasket 20.

Embodiment 2 is based on embodiment 1 and is shown in fig. 1-2, a micro fan 14 is fixedly arranged inside a circular cover 9, a plurality of circulation pipes 15 are fixedly connected to positions, which are located above the micro fan 14, of a side wall of the circular cover 9, one end, which is far away from the circular cover 9, of each circulation pipe 15 sequentially penetrates through an outer casing 7, a heat insulation cotton 8 and the upper end of the inner casing 1, the micro fan 14 works, the temperature inside the inner casing 1 can be pumped out, and the air inside the inner casing 1 is circularly conveyed to the inside of the inner casing 1 from the plurality of circulation pipes 15, so that the air inside the inner casing 1 circularly flows, the temperature monitoring is facilitated, and the uniform temperature balance inside the inner casing 1 can also be facilitated.

The conical sleeve 21 is fixedly arranged between the outer side wall of the circular cover 9 and the upper end of the outer machine shell 7, each circulating pipe 15 is arranged in the conical sleeve 21, the plurality of circulating pipes 15 can be protected through the conical sleeve 21, and the overall appearance attractiveness can be improved.

Embodiment 3 is as shown in fig. 1-2 on the basis of embodiment 1, a rubber shock pad 16 is fixedly arranged between the lower inner side wall of the mounting base 2 and the inner casing 1, a plurality of round holes are formed in the upper end of the rubber shock pad 16, a shock absorbing spring 17 is fixedly arranged between the lower inner side wall of the mounting base 2 and the inner casing 1 and at the position inside each round hole, and the inertia positioning measurement assembly 3 on the mounting base 2 can be subjected to shock absorption and buffering by matching the rubber shock pad 16 with the shock absorbing springs 17, so that the influence of the shock generated in the moving process of the carrier on the inertia positioning measurement assembly 3 is reduced.

When the inertial navigation positioning device is used, inertial navigation positioning measurement can be carried out through the inertial positioning measurement component 3, when the device works, if the temperature in the inner machine shell 1 is low, the device can work through the electric heating piece component 5, when the temperature in the inner machine shell 1 is increased to be in an appropriate range, when the temperature in the inner machine shell 1 is high, the temperature in the inner machine shell 1 can be reduced through the refrigerating piece component 6, and the temperature in the inner machine shell 1 can be maintained in an appropriate range through heating or cooling, so that the inertial positioning measurement component 3 can work in an appropriate temperature range, and the influence of the temperature on the inertial positioning measurement component 3 is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the utility model concepts of the present invention in the scope of the present invention.

Claims

1. The utility model provides a positioning accuracy evaluation system based on inertial navigation, includes inner casing (1), its characterized in that, the inside of inner casing (1) is equipped with mount pad (2), upper end fixedly connected with inertial positioning survey subassembly (3) of mount pad (2), two equal fixedly connected with control by temperature change covers (4) of two inside walls of inner casing (1) different side, two the inside of control by temperature change cover (4) is fixed respectively and is equipped with electric heat piece subassembly (5) and refrigeration piece subassembly (6), two the ventilation hole has all been seted up at the upper and lower both ends of control by temperature change cover (4), inner casing (1) is connected with the mechanism that adjusts the temperature, the outside cover of inner casing (1) is equipped with outer casing (7), common fixed packing has at a distance from temperature cotton (8) between outer casing (7) and inner casing (1).

2. The positioning accuracy evaluation system based on inertial navigation is characterized in that the temperature adjusting mechanism comprises a round cover (9) fixedly inserted at the upper end of the inner housing (1), a cylinder (10) is fixedly inserted at the upper end of the round cover (9), a partition plate (11) is fixedly arranged at the upper side inside the cylinder (10), a single chip microcomputer (12) and a temperature sensor (13) are fixedly connected to the upper end and the lower end of the partition plate (11) respectively, the single chip microcomputer (12) is in signal connection with the temperature sensor (13), and the single chip microcomputer (12) is electrically connected with the electric heating sheet assembly (5) and the refrigerating sheet assembly (6) respectively.

3. The inertial navigation-based positioning accuracy assessment system according to claim 2, wherein a micro fan (14) is fixedly arranged inside the circular cover (9), a plurality of circulating pipes (15) are fixedly connected to the position of the side wall of the circular cover (9) above the micro fan (14), and one end of each circulating pipe (15) far away from the circular cover (9) sequentially penetrates through the upper ends of the outer casing (7), the thermal insulation cotton (8) and the inner casing (1).

4. The inertial navigation-based positioning accuracy assessment system according to claim 1, wherein a rubber shock pad (16) is fixedly arranged between the mounting base (2) and the lower inner side wall of the inner casing (1), a plurality of round holes are formed in the upper end of the rubber shock pad (16), and a shock absorbing spring (17) is fixedly arranged between the mounting base (2) and the lower inner side wall of the inner casing (1) at a position inside each round hole.

5. The inertial navigation-based positioning accuracy assessment system according to claim 1, wherein an opening is formed in the side walls of the outer casing (7), the thermal insulation cotton (8) and the inner casing (1) together, a T-shaped cover plate (18) is movably inserted into the opening, a set of mounting bolts (19) are connected to the side wall of the T-shaped cover plate (18) in a threaded manner, and the rod wall of each mounting bolt (19) is connected to the outer side wall of the outer casing (7) in a threaded manner.

6. The inertial navigation-based positioning accuracy assessment system according to claim 5, wherein a sealing gasket (20) is fixedly connected to the side wall of the T-shaped cover plate (18), and the side wall of the sealing gasket (20) is disposed against the outer side wall of the outer casing (7).

7. The inertial navigation-based positioning accuracy assessment system according to claim 3, wherein a conical sleeve (21) is fixedly provided between the outer side wall of the circular cover (9) and the upper end of the outer casing (7), and each circulation tube (15) is provided inside the conical sleeve (21).