GNSS dynamic positioning precision testing device

Abstract

The utility model relates to a GNSS (Global Navigation Satellite System) dynamic positioning precision testing device, which comprises a base, a transmission assembly arranged above the base, and a rotating platform arranged above the transmission assembly and capable of rotating along with the transmission assembly, the rotating platform comprises a rotating disc, a speed adjusting rod installed on the rotating disc and an antenna pedestal installed on the speed adjusting rod, one end of the speed adjusting rod extends out of the rotating disc, the distance of the speed adjusting rod extending out of the rotating disc is adjustable, and the antenna pedestal is installed at the end of the speed adjusting rod extending out of the rotating disc. According to the utility model, a specific track can be arranged, circular moving tracks with different radiuses can be tested, the rotating speed can be effectively controlled, the function of testing the dynamic positioning precision of the GNSS can be realized, and the device has the advantages of cost saving, simplicity, convenience, feasibility, reusability, wide application range and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of GNSS positioning test, in particular to a GNSS dynamic positioning accuracy test device. Background Art

[0002] The Global Navigation Satellite System (GNSS) has been widely used in aviation, navigation, car navigation, mobile communications and other fields. GNSS receivers calculate the user's location information by receiving signals from satellites. However, in a dynamic environment, the positioning accuracy of the GNSS receiver may be affected by factors such as signal blocking, multipath effects and signal interference. Therefore, in order to ensure that the GNSS receiver can provide reliable positioning services in a dynamic environment, it is necessary to test the positioning accuracy. The existing GNSS positioning accuracy test device is mainly based on testing in a static environment and cannot simulate a real dynamic scene. Therefore, it is necessary to invent a device that can test the positioning accuracy of a GNSS receiver in a real dynamic environment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies existing in the prior art and provide a GNSS dynamic positioning accuracy testing device, which can not only set a specific track to test circular running tracks of different radii, but also effectively control the rotation speed to realize the function of testing the GNSS dynamic positioning accuracy.

[0004] The utility model is realized through the following technical solutions:

[0005] A GNSS dynamic positioning accuracy test device, characterized in that it includes a base, a transmission assembly installed above the base, and a rotating platform provided above the transmission assembly and capable of rotating with the transmission assembly; the rotating platform includes a turntable, a speed regulating rod installed on the turntable, and an antenna seat installed on the speed regulating rod, one end of the speed regulating rod extends out of the turntable, and the distance that the speed regulating rod extends out of the turntable is adjustable, and the antenna seat is installed at the end of the speed regulating rod extending out of the turntable.

[0006] According to the above technical solution, preferably, the transmission assembly includes a transmission platform fixedly connected to the top of the base, a rotating body rotatably connected to the top of the transmission platform, and a driving device for driving the rotating body to rotate, and the rotating body can drive the rotating platform to rotate.

[0007] According to the above technical solution, preferably, the driving device is a driving motor, the rotating body is a driven gear, the driving motor is installed on one side of the transmission platform, the driving motor is connected to a driving gear, and the driving gear is meshed with the driven gear.

[0008] According to the above technical solution, preferably, a plurality of rolling casters are provided along the circumferential direction on the upper surface of the transmission platform to support the driven gear to rotate above the transmission platform.

[0009] According to the above technical solution, preferably, the rotating platform also includes a circular platform, the circular platform, the driven gear, and the turntable are coaxially arranged, the circular platform is fixedly connected to the turntable, and the driven gear can drive the circular platform to rotate.

[0010] According to the above technical solution, preferably, a plurality of contact bodies are arranged along the circumferential direction on the lower surface of the circular platform, and the contact bodies are in contact with the driven gear downward, and the driven gear drives the circular platform to rotate through the friction force of the contact bodies.

[0011] According to the above technical solution, preferably, a plurality of adjustable screw feet are evenly arranged on the lower part of the base, and a level is installed on the speed regulating rod.

[0012] According to the above technical solution, preferably, a plurality of speed regulating holes are opened on the speed regulating rod, and the speed regulating rod is fixedly connected to the turntable at different speed regulating holes by bolts.

[0013] The beneficial effects of the utility model are:

[0014] The utility model can realize the GNSS positioning device to collect points along the specified track and in different directions, thereby realizing dynamic positioning accuracy test in various directions; at the same time, it can realize the adjustment of the movement track of the GNSS positioning device, and can also adjust the dynamic rotation rate, thereby realizing dynamic positioning accuracy test at different speeds on a specific track, and can also realize dynamic positioning accuracy test at the same speed on different tracks;

[0015] Therefore, the utility model can not only set a specific track to test circular running tracks of different radii, but also effectively control the rotation speed to realize the function of testing the GNSS dynamic positioning accuracy. It has the advantages of cost saving, simplicity, repeatability, and a wide range of uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the base part of the utility model.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the transmission assembly part of the utility model.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the rotating platform part of the utility model.

[0020] Figure 5It is a schematic diagram of the top view of the rotating platform part of the utility model.

[0021] In the figure: 1. base; 2. long hexagonal bolt; 3. adjustable screw foot; 4. lower bearing; 5. driven gear; 6. driving gear; 7. rotating shaft; 8. motor support platform; 9. driving motor; 10. rolling casters; 11. transmission platform; 12. steel pipe column; 13. auxiliary placement hole; 14. turntable; 15. speed regulating hole; 16. level; 17. speed regulating rod; 18. antenna seat; 19. fixing bolt; 20. fixing plate; 21. fixing hole; 22. upper bearing; 23. circular platform; 24. contact body; 25. transmission assembly; 26. rotating platform. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and the best embodiment. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.

[0023] In the description of the utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model.

[0024] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] As shown in the figure, the utility model comprises a base 1, a transmission assembly 25 installed on the base 1, and a rotating platform 26 arranged on the transmission assembly 25 and capable of rotating with the transmission assembly 25. The rotating platform 26 comprises a turntable 14, a speed regulating rod 17 installed on the turntable 14, and an antenna seat 18 installed on the speed regulating rod 17. One end of the speed regulating rod 17 extends out of the turntable 14, and the distance of the speed regulating rod 17 extending out of the turntable 14 is adjustable. In this example, a plurality of speed regulating holes 15 are provided on the speed regulating rod 17, and the speed regulating rod 17 is fixedly connected to the turntable 14 at different speed regulating holes 15 by bolts. The antenna seat 18 is installed at one end of the speed regulating rod 17 extending out of the turntable 14. The antenna seat 18 is mainly used to install and fix the GNSS equipment. A level 16 is installed on the speed regulating rod 17 to accurately adjust the horizontal stability of the device.

[0026] The base 1 is fixed by welding a square steel pipe with bolts to form a stable structure. The transmission assembly 25 is installed on the base 1 by bolt connection. A plurality of adjustable screw feet 3 are evenly arranged at the lower part of the base 1 for adjusting the horizontal stability of the device.

[0027] The transmission assembly 25 includes a transmission platform 11 fixedly connected to the top of the base 1, a rotating body rotatably connected to the top of the transmission platform 11, and a driving device for driving the rotating body to rotate. The rotating body can drive the rotating platform 26 to rotate. In this example, the driving device is a driving motor 9 (adjustable speed motor), and the rotating body is a driven gear 5. The adjustable speed motor is installed on one side of the transmission platform 11 by bolt connection through the motor support platform 8. The adjustable speed motor is fixed on the transmission platform 11, which can achieve different speeds of rotation and can be replaced. The rotating shaft 7 of the driving motor 9 (adjustable speed motor) is connected to the driving gear 6, and the driving gear 6 is meshed with the driven gear 5. A steel pipe column 12 is fixedly connected upward in the middle of the transmission platform 11, and the center position of the driven gear 5 is rotatably connected to the steel pipe column 12 through the lower bearing 4. In addition, a plurality of rolling casters 10 are arranged along the circumferential direction on the upper surface of the transmission platform 11 to support the driven gear 5 to rotate above the transmission platform 11.

[0028] The rotating platform 26 includes a circular platform 23, a turntable 14, a speed regulating rod 17 installed on the turntable 14, and an antenna seat 18 installed on the speed regulating rod 17. The circular platform 23, the driven gear 5, and the turntable 14 are coaxially arranged. The circular platform 23 is fixedly connected to the turntable 14. The circular platform 23 is rotatably connected to the steel pipe column 12 through an upper bearing 22. The driven gear 5 can drive the circular platform 23 to rotate. Specifically, in this example, the connection method between the driven gear 5 and the circular platform 23 can be preferably but not limited to the following three types: first, the driven gear 5 is connected to the circular platform 23 upward by bolt connection, thereby driving it to rotate together; second, a plurality of contact bodies 24 are arranged along the circumferential direction on the lower surface of the circular platform 23, and the contact body 24 is made of rubber material with a large friction coefficient. The contact body 24 fits downward with the driven gear 5, and the driven gear 5 drives the circular platform 23 to rotate through the friction force of the contact body 24. This arrangement can prevent the device from encountering obstacles suddenly during operation, causing the entire device to freeze, and plays a buffering role of the rotating platform 26 to avoid Destroy the motor and the entire device; Thirdly, the lower surface of the circular platform 23 is provided with a plurality of contact bodies 24 along the circumference. The contact bodies 24 use rolling casters. After testing, when no instrument is placed on the rotating platform 26, it runs at the highest speed of an ordinary motor. At the beginning, the friction force generated by the rolling casters and the driven gear 5 is less than the traction force of the rotating platform 26, and the rotating platform 26 can rotate normally. After the entire platform rotates at a uniform speed, the entire device will be a whole. There will be no displacement between the rolling casters under the circular platform 23 and the driven gear 5, and no friction force will be generated to counteract the traction force, so there will be no slipping between the rolling casters and the driven gear 5. In addition, in this example, six auxiliary placement holes 13 are installed on the turntable 14, on which shielding objects can be fixed to play the role of a protective device.

[0029] The GNSS dynamic positioning accuracy test device disclosed in the utility model has a working principle of fixing the GNSS positioning device on the antenna seat 18, the speed regulating motor drives the driving gear 6, the driving gear 6 drives the driven gear 5, and the driven gear 5 drives the rotating platform 26 to realize dynamic positioning of a specific track.

[0030] The preferred implementation of the utility model is as follows:

[0031] (1) Before conducting a dynamic accuracy test of a GNSS positioning device, assemble the device by first adjusting the base 1 to be stable using the adjustable screw feet 3, and then fixing the transmission assembly 25 using long hexagonal bolts;

[0032] (2) Check whether the driving motor 9 of the transmission assembly 25 is fixed to the transmission platform 11 by the long hexagonal bolts 2, then install the driving gear 6 on the motor through the rotating shaft 7, install the driving motor 9 on the motor support platform 8, and insert the driven gear 5 equipped with the lower bearing 4 into the steel pipe column 12, so that the driving gear 6 and the driven gear 5 are tightly engaged, and the driven gear 5 is just in contact with the rolling caster 10;

[0033] (3) After the base 1 and the transmission assembly 25 are installed, the circular platform 23 with the upper bearing 22 in the middle is inserted into the steel pipe column 12;

[0034] (4) Finally, the turntable 14 is fixed to the circular platform 23 at the fixing hole 21 by using the fixing bolts 19 through the fixing plate 20, and then different speed regulating holes 15 are selected and fixed to adjust the installation position of the speed regulating rod 17.

[0035] (5) After the above steps are completed, the height of the entire device can be readjusted, the GNSS positioning device can be placed on the antenna base 18, and the level 16 can be further accurately adjusted to keep the entire device horizontal and stable. Finally, the speed of the motor can be adjusted to complete the dynamic change of the collection point of the entire device.

[0036] The utility model can realize the GNSS positioning equipment to collect points along the specified track and in different directions, thereby realizing dynamic positioning accuracy testing in various directions; at the same time, it can realize the adjustment of the movement track of the GNSS positioning equipment, and can also adjust the dynamic rotation rate, thereby realizing dynamic positioning accuracy testing at different speeds on a specific track, and can also realize dynamic positioning accuracy testing at the same speed on different tracks.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A GNSS dynamic positioning accuracy test device, characterized in that: It comprises a base (1), a transmission assembly (25) installed above the base (1), and a rotating platform (26) arranged above the transmission assembly (25) and capable of rotating together with the transmission assembly (25); The rotating platform (26) comprises a turntable (14), a speed regulating rod (17) mounted on the turntable (14), and an antenna seat (18) mounted on the speed regulating rod (17); one end of the speed regulating rod (17) extends out of the turntable (14), and the distance by which the speed regulating rod (17) extends out of the turntable (14) is adjustable; the antenna seat (18) is mounted on the end of the speed regulating rod (17) extending out of the turntable (14).

2. A GNSS dynamic positioning accuracy test device according to claim 1, characterized in that: The transmission assembly (25) comprises a transmission platform (11) fixedly connected to the top of the base (1), a rotating body rotatably connected to the top of the transmission platform (11), and a driving device for driving the rotating body to rotate, wherein the rotating body can drive the rotating platform (26) to rotate.

3. A GNSS dynamic positioning accuracy test device according to claim 2, characterized in that: The driving device is a driving motor (9), the rotating body is a driven gear (5), the driving motor (9) is installed on one side of the transmission platform (11), the driving motor (9) is connected to a driving gear (6), and the driving gear (6) is meshed with the driven gear (5).

4. A GNSS dynamic positioning accuracy test device according to claim 3, characterized in that: A plurality of rolling casters (10) are arranged along the circumferential direction on the upper surface of the transmission platform (11) for supporting the driven gear (5) to rotate above the transmission platform (11).

5. A GNSS dynamic positioning accuracy test device according to claim 3, characterized in that: The rotating platform (26) further comprises a circular platform (23), wherein the circular platform (23) is fixedly connected to the rotating disk (14), and the driven gear (5) can drive the circular platform (23) to rotate.

6. A GNSS dynamic positioning accuracy test device according to claim 5, characterized in that: A plurality of contact bodies (24) are arranged along the circumferential direction on the lower surface of the circular platform (23); the contact bodies (24) are in contact with the driven gear (5) downward, and the driven gear (5) drives the circular platform (23) to rotate through the friction force of the contact bodies (24).

7. The GNSS dynamic positioning accuracy test device according to any one of claims 1 to 6, characterized in that: A plurality of adjustable screw feet (3) are evenly arranged at the lower part of the base (1).

8. A GNSS dynamic positioning accuracy test device according to claim 7, characterized in that: A level gauge (16) is installed on the speed regulating rod (17).

9. A GNSS dynamic positioning accuracy test device according to claim 1, characterized in that: The speed regulating rod (17) is provided with a plurality of speed regulating holes (15), and the speed regulating rod (17) is fixedly connected to the rotating disk (14) at different speed regulating holes (15) by means of bolts.

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