An anti-interference test device for UAV positioning and navigation system

Abstract

The present invention discloses an anti-interference test device for an unmanned aerial vehicle positioning and navigation system, which belongs to the field of unmanned aerial vehicle positioning and navigation system testing. The anti-interference test device for an unmanned aerial vehicle positioning and navigation system comprises a decoy body, a plurality of antennas are installed on the top of the decoy body, card slots are provided on both sides of the decoy body, card blocks inserted into the card slots are installed on both sides of the interior of the antenna, two protective shells are fastened on the outer side of the decoy body, two mounting plates are provided on the top of the decoy body, a plurality of antennas are respectively inserted on the two mounting plates, two first limiting rings are installed on the antenna, and the two first limiting rings are respectively located at the top and bottom of the mounting plate, which can realize the convenient separation of the antenna from the decoy body and ensure that the antenna will not completely detach from the decoy, is not easy to be lost, and can provide good protection for the antenna.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicle (UAV) positioning and navigation system testing, and more particularly to an anti-interference testing device for a UAV positioning and navigation system. Background Art

[0002] Unmanned aerial vehicles (UAVs), commonly known as drones, unmanned aerial vehicles (UAVs), unmanned combat aircraft (UCAVs), or bee-shaped aircraft, are broadly defined as various remote-controlled aircraft that do not require a pilot to operate. The positioning and navigation systems of UAVs are susceptible to interference during flight, and many UAVs have anti-interference capabilities. During the production and development process, anti-interference testing of UAV positioning and navigation systems is required. This testing is generally performed using a GPS signal decoy.

[0003] Many existing decoys use multiple antennas. These antennas have a certain length and need to be disassembled or folded for storage after use. Otherwise, they are easily damaged. However, in order to ensure a small size, some handheld decoys in the prior art have multiple antennas that are particularly compact. This makes it difficult to disassemble or fold the antennas for storage. Even after disassembly, the antennas are easily lost. Although folding and storing reduce the space occupied, it does not protect the antennas and the antennas are easily damaged. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide an anti-interference test device for a UAV positioning and navigation system, which can conveniently separate the antenna from the decoy body, ensure that the antenna will not be completely detached from the decoy, is not easily lost, and can provide good protection for the antenna.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] An anti-interference test device for a drone positioning and navigation system includes a decoy body, a plurality of antennas mounted on the top of the decoy body, a card slot formed on both sides of the decoy body, and card blocks mounted on both sides of the interior of the antennas for insertion into the card slots. Two protective shells are fastened to the outside of the decoy body, two mounting plates are provided on the top of the decoy body, and the plurality of antennas are respectively inserted into the two mounting plates. Two first limiting rings are mounted on the antennas, and the two first limiting rings are respectively located at the top and bottom of the mounting plates.

[0009] Connecting blocks are installed on both sides of the mounting plate, and a first shaft block is installed on the connecting block. A movable rod is sleeved on the first shaft block, and the lower ends of the two movable rods are crossed and interspersed with a second shaft block. A first movable groove is opened on both sides of the decoy body, and one end of the second shaft block is inserted into the first movable groove. A transmission plate is provided at the other end of the second shaft block. A limiting structure is provided between the movable rod and the decoy body, and a conversion mechanism used in conjunction with the limiting mechanism is provided on the transmission plate.

[0010] Furthermore, the limiting structure includes a third axis block inserted into the movable rod, two second movable grooves are opened on the side of the decoy body, one end of the third axis block is inserted into the second movable groove, and the decoy body is also provided with a third movable groove connected to the second movable groove, and the length of the third movable groove is equal to the length of the first movable groove.

[0011] Furthermore, the conversion mechanism includes a bolt threadedly inserted into the transmission plate, a connecting rod is sleeved on the bolt, a protrusion is provided on the bolt and is located inside the connecting rod, an elliptical groove is provided at the lower end of the connecting rod and is sleeved on the second shaft block, a gear lever located at the bottom of the third shaft block is provided on the side of the transmission plate close to the third shaft block, and a knob is installed on the end of the bolt located on the outside of the transmission plate.

[0012] Furthermore, an elliptical block is installed at one end of the bolt and inserted into the first movable groove. The top and bottom of the inner side of the first movable groove are provided with limiting grooves for use with the elliptical block, and the elliptical block is located in the limiting groove at the top.

[0013] Furthermore, a limiting plate is provided on the mounting plate and is sleeved on the multiple antennas. The width of the limiting plate is greater than that of the mounting plate, and a second limiting ring is sleeved on the upper end of the antenna. Blocks are provided on the opposite sides of the two protective shells.

[0014] Furthermore, the sum of the widths of the two mounting plates is smaller than the width of the card slot, and the difference in width is equal to the sum of the diameters of the two card blocks.

[0015] Furthermore, an upper end surface of a connection between the second movable groove and the third movable groove is inclined upward from the second movable groove to the third movable groove.

[0016] Furthermore, an end surface of the elliptical block away from the bolt is in contact with the surfaces of the first movable groove and the limiting groove.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) In this solution, the second shaft block drives the two movable rods to move, and the two movable rods drive the two mounting plates to move through the first shaft block and the connecting block. Under the action of the limiting structure, the antenna can move in an N shape, thereby achieving separation from the upper end of the decoy body and entering between the protective shell and the decoy body. The protective shell can protect the decoy body.

[0020] (2) This solution sets a conversion mechanism to enable the transmission plate to switch between pushing the second shaft block and the third shaft block. When removing, the antenna can be retracted by pushing the second shaft block, and the two third shaft blocks can be closed when moving up by driving the third shaft block, which is convenient for quick installation of the antenna when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0022] Figure 2 is a side sectional view of the present invention;

[0023] Figure 3 An exploded view of the antenna-related structure of the present invention;

[0024] Figure 4 This is a separate view of the protective shell and the decoy body of the present invention;

[0025] Figure 5 This is an exploded view of the structure between the decoy body and the transmission plate of the present invention;

[0026] Figure 6 For the present invention Figure 2 Enlarged view of point A in the middle;

[0027] Figure 7 For the present invention Figure 5 Enlarged view of point B in the middle;

[0028] Figure 8 It is a partial side sectional view of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Decoy body; 2. Antenna; 3. Protective shell; 4. Mounting plate; 5. First limiting ring; 6. Connecting block; 7. First shaft block; 8. Movable rod; 9. Second shaft block; 10. Transmission plate; 11. Third shaft block; 12. First movable slot; 13. Second movable slot; 14. Third movable slot; 15. Bolt; 16. Bump; 17. Connecting rod; 18. Oval slot; 19. Shift lever; 20. Knob; 21. Oval block; 22. Limiting slot; 23. Block; 24. Slot; 25. Limiting plate; 26. Second limiting ring; 27. Stop block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-8 An anti-interference test device for a drone positioning and navigation system includes a decoy body 1, a plurality of antennas 2 mounted on the top of the decoy body 1, a card slot 24 formed on both sides of the decoy body 1, and a card block 23 inserted into the card slot 24 mounted on both sides of the inside of the antenna 2. Two protective shells 3 are fastened to the outside of the decoy body 1, two mounting plates 4 are provided on the top of the decoy body 1, and the plurality of antennas 2 are respectively inserted into the two mounting plates 4. Two first limiting rings 5 are mounted on the antenna 2, and the two first limiting rings 5 are respectively located at the top and bottom of the mounting plate 4;

[0033] Connecting blocks 6 are installed on both sides of the mounting plate 4, and a first shaft block 7 is installed on the connecting block 6. A movable rod 8 is sleeved on the first shaft block 7. The lower ends of the two movable rods 8 are crossed and interspersed with a second shaft block 9. A first movable groove 12 is opened on both sides of the decoy body 1. One end of the second shaft block 9 is inserted into the first movable groove 12. A transmission plate 10 is provided at the other end of the second shaft block 9. A limiting structure is provided between the movable rod 8 and the decoy body 1, and a conversion mechanism used in conjunction with the limiting mechanism is provided on the transmission plate 10;

[0034] The two movable rods 8 are driven to move by the second shaft block 9, and the two movable rods 8 drive the two mounting plates 4 to move through the first shaft block 7 and the connecting block 6. Under the action of the limiting structure, the antenna 2 can move in an N shape, thereby breaking away from the upper end of the decoy body 1 and entering between the protective shell 3 and the decoy body 1. The decoy body 1 can be protected by the protective shell 3.

[0035] By setting a conversion mechanism, the transmission plate 10 can switch between pushing the second shaft block 9 and the third shaft block 11. When removing, the antenna 2 can be retracted by pushing the second shaft block 9, and the two third shaft blocks 11 can be closed when moving up by driving the third shaft block 11, which is convenient for quick installation of the antenna 2 when used.

[0036] See Figure 6 and Figure 7The limiting structure includes a third shaft block 11 inserted into the movable rod 8, and two second movable grooves 13 are provided on the side of the decoy body 1. One end of the third shaft block 11 is inserted into the second movable groove 13. The decoy body 1 is also provided with a third movable groove 14 connected to the second movable groove 13. The length of the third movable groove 14 is equal to that of the first movable groove 12.

[0037] By setting a limiting mechanism, the moving trajectory of the movable rod 8 can be controlled, so that the movable rod 8 can move in an N shape when driving the mounting plate 4 to move, so that the antenna 2 is separated from the upper end of the decoy body 1 when it moves upward, and then moves downward again and enters between the protective shell 3 and the decoy body 1, thereby forming a protective effect for the antenna 2.

[0038] See Figure 6 and Figure 7 The conversion mechanism includes a bolt 15 threadedly inserted into the transmission plate 10, a connecting rod 17 is sleeved on the bolt 15, a protrusion 16 is provided on the bolt 15 and located inside the connecting rod 17, an elliptical groove 18 is provided at the lower end of the connecting rod 17 and is sleeved on the second shaft block 9, a shift lever 19 is provided at the bottom of the third shaft block 11 on the side of the transmission plate 10 close to the third shaft block 11, and a knob 20 is installed on the end of the bolt 15 located outside the transmission plate 10;

[0039] By rotating the bolt 15, the elliptical groove 18 can be driven to move up and down through the protrusion 16. In conjunction with the gear lever 19, the second shaft block 9 or the third shaft block 11 can be subjected to force when the transmission plate 10 moves upward. The conversion can be convenient. The second shaft block 9 and the third shaft block 11 are used to bear force during storage and installation respectively, which can stably realize the N-shaped movement of the antenna 2, and the storage and installation of the antenna 2 will be very convenient.

[0040] See Figure 7 and Figure 8 , an elliptical block 21 is installed at one end of the bolt 15 and inserted into the first movable groove 12. The top and bottom of the inner side of the first movable groove 12 are provided with a limiting groove 22 for use with the elliptical block 21. The elliptical block 21 is located in the limiting groove 22 at the top;

[0041] The elliptical block 21 can lock the positions of the movable rod 8 and the second axis block 9, thereby locking the positions of the mounting plate 4 and the antenna 2. Whether in use or after storage, the antenna 2 can ensure better stability and firmness and is not easily damaged by bumps.

[0042] See Figure 3 , a limiting plate 25 is provided on the mounting plate 4 and is sleeved on the multiple antennas 2. The width of the limiting plate 25 is greater than the mounting plate 4, and a second limiting ring 26 is sleeved on the upper end of the antenna 2. Stoppers 27 are provided on opposite sides of the two protective shells 3;

[0043] When the antenna 2 is stored, the stop block 27 can be used to limit the limit plate 25 from moving down into the lower part of the protective shell 3, so that the limit plate 25 is located at the upper end of the antenna 2 and the second limit ring 26 is manually hit to limit it. The limit plate 25 and the mounting plate 4 limit the antenna 2 from the top and bottom respectively, making the antenna 2 more stable and less prone to shaking and bumping.

[0044] See Figure 5 The sum of the widths of the two mounting plates 4 is smaller than the width of the card slot 24, and the difference in width is equal to the sum of the diameters of the two card blocks 23;

[0045] This arrangement ensures that after the mounting plate 4 enters between the protective shell 3 and the decoy body 1, the blocks 23 on both sides of the protective shell 3 are exactly at the end positions of the slots 24, so that the position of the protective shell 3 is locked and cannot move, thereby providing better protection for the antenna 2.

[0046] See Figure 6 The upper end surface of the connection between the second movable groove 13 and the third movable groove 14 is inclined upward from the second movable groove 13 to the third movable groove 14;

[0047] This arrangement ensures that during installation, the third axis block 11 is forced to move upward, and can smoothly enter the second movable groove 13 from the third movable groove 14 through the inclined surface, thereby realizing the two movable rods 8 closing together, ensuring the N-shaped movement of the antenna 2, and being more convenient and stable during installation.

[0048] See Figure 8 , one end surface of the elliptical block 21 away from the bolt 15 is in contact with the surface of the first movable groove 12 and the limiting groove 22;

[0049] This arrangement allows the threaded relationship between the bolt 15 and the transmission plate 10 to cause the bolt 15 to be pushed toward the decoy body 1 when it rotates, thereby causing the elliptical block 21 to press against the first movable groove 12 and the limiting groove 22, making it more firm and stable.

[0050] Working principle: When it is necessary to collect the antenna 2, the user separates the two protective shells 3 away from the decoy body 1, and then rotates the knob 20 90 degrees. The knob 20 drives the bolt 15 to rotate, and the bolt 15 drives the elliptical block 21 to rotate out of the limit groove 22, and drives the second shaft block 9 to move up through the protrusion 16. After the second shaft block 9 moves up, the bottom surface of the elliptical groove 18 contacts the second shaft block 9. At this time, the transmission plate 10 is moved upward as a whole. The transmission plate 10 drives the second shaft block 9 to move up through the bolt 15 and the connecting rod 17. The second shaft block 9 drives the two movable rods 8 to move up. The two movable rods 8 drives the mounting plate 4 to move upward through the first axis block 7 and the connecting block 6, and the mounting plate 4 drives the multiple antennas 2 to move upward. When the antenna 2 is separated from the upper end of the decoy body 1, the third axis block 11 is exactly located at the connection between the second movable groove 13 and the third movable groove 14. At this time, as the transmission plate 10 moves upward, the two movable rods 8 move away from each other under the action of gravity and the thrust of the second axis block 9, so that the third axis block 11 enters the third movable groove 14, and the two mounting plates 4 are respectively located between the two protective shells 3 and the decoy body 1. Then the user moves the transmission plate 10 downward as a whole, and drives the two movable rods 8 to move downward through the second axis block 9. The two movable rods 8 drive the two mounting plates 4 and the antenna 2 to completely enter the protective shell 3 and the decoy body 1, and then drives the bolt 15 to rotate through the knob 20. The bolt 15 drives the elliptical block 21 to rotate into the limit groove 22 at the bottom of the first movable groove 12 to complete the locking;

[0051] When the antenna 2 needs to be installed, the user first drives the bolt 15 to rotate through the knob 20, so that the elliptical block 21 leaves the limit slot 22 and then moves the transmission plate 10 upward as a whole. The transmission plate 10 drives the two movable rods 8 upward through the second axis block 9, and the two movable rods 8 drive the mounting plate 4 and multiple antennas 2 to move upward. When the third axis block 11 moves with the movable rod 8 and is at the connection between the second movable slot 13 and the third movable slot 14, the two third axis blocks 11 move closer to each other under the influence of the inclined surface during the upward movement, so that the two mounting plates 4 are brought closer together, and the antenna 2 is facing the upper end of the decoy body 1. Then the transmission plate 10 is moved downward as a whole, and the antenna 2 can be installed on the upper end of the decoy body 1.

[0052] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An anti-interference test device for a UAV positioning and navigation system, comprising a decoy body (1), characterized in that: A plurality of antennas (2) are installed on the top of the decoy body (1), a card slot (24) is provided on both sides of the decoy body (1), and a card block (23) inserted into the card slot (24) is installed on both sides of the inside of the antenna (2), and two protective shells (3) are fastened to the outside of the decoy body (1), and two mounting plates (4) are provided on the top of the decoy body (1), and the plurality of antennas (2) are respectively inserted on the two mounting plates (4). Two first limiting rings (5) are installed on the antenna (2), and the two first limiting rings (5) are respectively located at the top and bottom of the mounting plate (4); Connecting blocks (6) are installed on both sides of the mounting plate (4), a first shaft block (7) is installed on the connecting block (6), a movable rod (8) is sleeved on the first shaft block (7), the lower ends of the two movable rods (8) are crossed and interspersed with a second shaft block (9), a first movable groove (12) is opened on both sides of the decoy body (1), one end of the second shaft block (9) is inserted into the first movable groove (12), and a transmission plate (10) is provided at the other end of the second shaft block (9), a limiting structure is provided between the movable rod (8) and the decoy body (1), and a conversion mechanism used in conjunction with the limiting mechanism is provided on the transmission plate (10); The limiting structure includes a third shaft block (11) inserted into the movable rod (8), two second movable grooves (13) are provided on the side of the decoy body (1), one end of the third shaft block (11) is inserted into the second movable groove (13), and the decoy body (1) is further provided with a third movable groove (14) connected to the second movable groove (13), and the length of the third movable groove (14) is equal to the length of the first movable groove (12); The conversion mechanism includes a bolt (15) threadedly inserted into the transmission plate (10), a connecting rod (17) sleeved on the bolt (15), a protrusion (16) located inside the connecting rod (17) provided on the bolt (15), an elliptical groove (18) provided at the lower end of the connecting rod (17) and sleeved on the second shaft block (9), a shift rod (19) located at the bottom of the third shaft block (11) provided on the side of the transmission plate (10) close to the third shaft block (11), and a knob (20) installed on the end of the bolt (15) located outside the transmission plate (10); One end of the bolt (15) is provided with an elliptical block (21) and is inserted into the first movable groove (12). The top and bottom of the inner side of the first movable groove (12) are provided with limiting grooves (22) for use with the elliptical block (21). The elliptical block (21) is located in the limiting groove (22) at the top. The upper end surface of the connection between the second movable groove (13) and the third movable groove (14) is inclined upward from the second movable groove (13) to the third movable groove (14); An end surface of the elliptical block (21) away from the bolt (15) is in contact with the surfaces of the first movable groove (12) and the limiting groove (22).

2. The anti-interference test device for a UAV positioning and navigation system according to claim 1, characterized in that: The mounting plate (4) is provided with a limiting plate (25) sleeved on the plurality of antennas (2), the limiting plate (25) being wider than the mounting plate (4), and a second limiting ring (26) sleeved on the upper end of the antenna (2), and a stopper (27) is provided on opposite sides of the two protective shells (3).

3. The anti-interference test device for a UAV positioning and navigation system according to claim 1, characterized in that: The sum of the widths of the two mounting plates (4) is smaller than the width of the card slot (24), and the difference in width is equal to the sum of the diameters of the two card blocks (23).

Images