Modular multichannel laser radar antenna

Abstract

The utility model relates to a modularized multi-channel laser radar antenna, and relates to the technical field of laser radars, the modularized multi-channel laser radar antenna comprises a laser radar antenna mounting seat and a plurality of single-channel laser radar antennas, the laser radar antenna mounting seat is provided with mounting holes in one-to-one correspondence with the single-channel laser radar antennas; the single-channel laser radar antennas can be inserted into the mounting holes so that the inclination angles of the single-channel laser radar antennas can meet the design requirement, and each single-channel laser radar antenna is detachably connected with the laser radar antenna mounting base through a connecting assembly. The multi-channel laser radar antenna has the advantages that the angle arrangement and aperture selection of each channel of the multi-channel laser radar antenna are more flexible, different combinations can be realized by changing individual modules in a short time, the research and development time is shortened, and the cost is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of laser radar technology, and in particular to a modular multi-channel laser radar antenna. Background Art

[0002] Lidar wind measurement technology uses the Doppler effect to emit a laser beam into the atmosphere and measure the frequency shift of the laser beam reflected by airborne particles to measure wind speed. Lidar wind measurement technology is widely used in real-time monitoring of atmospheric wind fields. With the development of laser wind measurement radar technology, the demand for multi-channel lidar antennas is becoming more and more diverse.

[0003] The laser radar antenna and the base of the existing multi-channel laser radar antenna adopt an integrated design, which is not convenient for the angle arrangement and aperture selection of each channel of the multi-channel laser radar antenna. Utility Model Content

[0004] In order to improve the problem of the inconvenient angle arrangement and aperture selection of each channel of a multi-channel lidar antenna, the present application provides a modular multi-channel lidar antenna.

[0005] The modular multi-channel lidar antenna provided in this application adopts the following technical solution:

[0006] A modular multi-channel laser radar antenna comprises a laser radar antenna mounting base and a plurality of single-channel laser radar antennas, wherein the laser radar antenna mounting base is provided with mounting holes corresponding one to one with the single-channel laser radar antennas, and the single-channel laser radar antennas can be inserted into the mounting holes so that the inclination angle of the single-channel laser radar antenna meets the design requirements, and each of the single-channel laser radar antennas is detachably connected to the laser radar antenna mounting base via a connecting component.

[0007] By adopting the above technical solution, when installing a multi-channel laser radar antenna, first insert multiple single-channel laser radar antennas into the corresponding mounting holes so that the inclination angle of each single-channel laser radar antenna meets the design requirements, and then the single-channel laser radar antenna is connected and fixed to the laser radar antenna mounting base through a connecting component, so that the angle arrangement and aperture selection of each channel of the multi-channel laser radar antenna are more flexible, and individual modules can be changed in a short time to achieve different combinations, shortening the research and development time and effectively reducing costs.

[0008] In a specific possible implementation scheme, a first positioning surface is provided on the hole wall of the mounting hole, and a second positioning surface that fits with the first positioning surface is provided on the housing of the single-channel laser radar antenna.

[0009] By adopting the above technical solution, the single-channel laser radar antenna is installed by fitting the first positioning surface with the second positioning surface, thereby improving the installation accuracy of the single-channel laser radar antenna.

[0010] In a specific possible implementation manner, the planes where the first positioning surface and the second positioning surface are located are both perpendicular to the axis of the mounting hole.

[0011] By adopting the above technical solution, the first positioning surface and the second positioning surface are arranged to be perpendicular to the axis of the mounting hole, which facilitates the processing of the first positioning surface.

[0012] In a specific possible implementation scheme, the connecting assembly includes an external thread and an internal thread, the external thread is arranged on the hole wall of the mounting hole, and the internal thread is arranged on the outer shell of the single-channel lidar antenna so as to be able to engage with the external thread.

[0013] By adopting the above technical solution, the single-channel laser radar antenna and the laser radar antenna mounting base are engaged with the internal thread and the external thread to achieve detachable installation of the two, with a simple structure and convenient installation.

[0014] In a specific feasible implementation scheme, the connecting assembly includes a connecting sleeve and a fastening block. The connecting sleeve is threadedly mounted on the outer shell of the single-channel lidar antenna so that it can be inserted into the mounting hole. A fastening groove is provided on the side wall of the mounting hole, and a guide groove is provided on the hole wall of the mounting hole. The fastening block is fixedly arranged on the connecting sleeve so that it can be inserted into the fastening groove along the guide groove. The connecting sleeve can drive the fastening block to press against the groove wall of the fastening groove so that the second positioning surface presses against the first positioning surface.

[0015] By adopting the above technical solution, when installing the single-channel laser radar antenna, the connecting sleeve is first threaded onto the outer shell of the single-channel laser radar antenna and then inserted into the mounting hole. At the same time, the fastening block is inserted into the fastening groove along the guide groove. Then, the single-channel laser radar antenna is kept stationary and the connecting sleeve is rotated. The connecting sleeve drives the fastening block to press against the side wall of the fastening groove while pressing the first positioning surface against the second positioning surface, thereby completing the installation and fixation of the single-channel laser radar antenna. There is no need to machine an external thread on the hole wall of the mounting hole, thereby simplifying the manufacture of the mounting hole.

[0016] In a specific feasible implementation scheme, the laser radar antenna mounting seat is provided with a rotating ring plate sliding in the fastening groove, and a connecting port that can be connected with the guide groove is opened on the rotating ring plate. The fastening block can pass through the rotating ring plate through the connecting port, and a baffle is fixed on the rotating ring plate. The fastening block can push the baffle to rotate so that the connecting port, the fastening block and the guide groove are misaligned.

[0017] By adopting the above technical solution, when the fastening block passes through the connecting port, the connecting sleeve drives the fastening block to rotate, and the fastening block pushes the rotating ring plate to rotate through the baffle, so that the connecting port, the fastening block, and the guide groove are misaligned when the fastening block rotates, thereby ensuring the reliability of the abutment between the fastening block and the groove wall of the fastening groove, and improving the stability of the installation of the single-channel lidar antenna.

[0018] In a specific possible implementation scheme, the laser radar antenna mounting base is provided with an assembly tube for the connecting sleeve to pass through, and the assembly tube can be inserted into the mounting hole to form the fastening groove with the hole wall of the mounting hole, and the guide groove is arranged on the assembly tube.

[0019] By adopting the above technical solution and providing an assembly cylinder, the convenience of installing the rotating ring plate in the fastening groove can be improved.

[0020] In a specific possible implementation scheme, a mounting plate is fixedly provided on the assembly tube, and the mounting plate is detachably connected to the laser radar antenna mounting base by bolts.

[0021] By adopting the above technical solution, the mounting plate is detachably mounted to the laser radar antenna through threads, thereby improving the convenience of disassembly and assembly of the assembly tube.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When installing a multi-channel LiDAR antenna, first insert multiple single-channel LiDAR antennas into the corresponding mounting holes so that the inclination angle of each single-channel LiDAR antenna meets the design requirements. Then the single-channel LiDAR antenna is connected and fixed to the LiDAR antenna mounting base through a connecting component, making the angle arrangement and aperture selection of each channel of the multi-channel LiDAR antenna more flexible. Individual modules can be changed in a short time to achieve different combinations, shortening the R&D time and effectively reducing costs.

[0024] 2. When installing the single-channel laser radar antenna, first thread the connecting sleeve onto the outer shell of the single-channel laser radar antenna, and then insert it into the mounting hole. At the same time, insert the fastening block into the fastening groove along the guide groove, and then keep the single-channel laser radar antenna stationary. Rotate the connecting sleeve, and the connecting sleeve drives the fastening block to press against the side wall of the fastening groove while pressing the first positioning surface against the second positioning surface, thereby completing the installation and fixation of the single-channel laser radar antenna. There is no need to machine an external thread on the hole wall of the mounting hole, which facilitates the manufacture of the laser radar antenna mounting base. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a structural schematic diagram of a modular multi-channel lidar antenna according to Example 1 of the present application.

[0026] Figure 2 is along Figure 1 Section view along line AA.

[0027] Figure 3 yes Figure 2 Enlarged view of part B in the middle.

[0028] Figure 4 It is a schematic diagram of the structure of the modular multi-channel lidar antenna of Example 2 of the present application.

[0029] Figure 5 It is a schematic diagram of the structure of the modular multi-channel lidar antenna of Example 3 of the present application.

[0030] Figure 6 It is a schematic diagram of the structure of the modular multi-channel lidar antenna of Example 4 of the present application.

[0031] Figure 7 It is a schematic diagram of the structure of the modular multi-channel lidar antenna of Example 5 of the present application.

[0032] Figure 8 It is a schematic diagram of the structure of the modular multi-channel lidar antenna of Example 6 of the present application.

[0033] Fig. 9 is along Figure 8 Sectional view along the CC line.

[0034] Fig.10 yes Fig. 9 Enlarged view of part D in the middle.

[0035] Fig.11 This is an exploded view showing the baffle.

[0036] Explanation of the accompanying drawings: 1. Laser radar antenna mounting seat; 11. Mounting hole; 111. Positioning section; 112. Connecting section; 2. Single-channel laser radar antenna; 3. Connecting assembly; 311. External thread; 312. Internal thread; 321. Connecting sleeve; 322. Fastening block; 323. Assembly cylinder; 324. Fastening groove; 325. Guide groove; 326. Mounting plate; 327. Rotating ring plate; 328. Connecting port; 329. Baffle; 41. First positioning surface; 42. Second positioning surface. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-11 This application is described in further detail.

[0038] The present application embodiment discloses a modular multi-channel laser radar antenna

[0039] Example 1

[0040] Reference Figure 1 , Figure 2 A modular multi-channel laser radar antenna includes a laser radar antenna mounting seat 1 and a plurality of single-channel laser radar antennas 2. The barrel of the single-channel laser radar antenna 2 is usually made of aluminum alloy to reduce cost and weight. The length of the structural member changes with the temperature. The optical system adopts a non-thermal design to ensure that the focal position is always at the end face of the optical fiber. The laser radar antenna mounting seat 1 is provided with mounting holes 11 corresponding to the single-channel laser radar antenna 2. In this embodiment, it is a dual-channel laser radar antenna, so the number of mounting holes 11 on the corresponding laser radar antenna is two. The inclination angle of the mounting hole 11 is designed according to the inclination angle of the corresponding single-channel laser radar antenna 2 to ensure that when the single-channel laser radar antenna 2 is inserted into the mounting hole 11, the inclination angle of the single-channel laser radar antenna 2 meets the design requirements. The shell wall of the single-channel laser radar antenna 2 is a cylindrical surface that matches the mounting hole 11. Each single-channel laser radar antenna 2 is detachably connected to the laser radar antenna mounting seat 1 through a connecting component 3.

[0041] Reference Figure 2 , Figure 3 A first positioning surface 41 is provided on the hole wall of the mounting hole 11. The first positioning surface 41 is arranged in a circle along the circumference of the mounting hole 11, so that the mounting hole 11 is divided into a positioning section 111 and a connecting section 112. A second positioning surface 42 that fits the first positioning surface 41 is provided on the shell of the single-channel laser radar antenna 2. The planes where the first positioning surface 41 and the second positioning surface 42 are located are both perpendicular to the axis of the mounting hole 11, so as to improve the convenience of processing the first positioning surface 41 and the second positioning surface 42. The single-channel laser radar antenna 2 is positioned in the mounting hole 11 by the first positioning surface 41 and the second positioning surface 42, so as to improve the accuracy of the installation of the single-channel laser radar antenna 2.

[0042] Reference Figure 2 , Figure 3 The connecting component 3 in this embodiment includes an external thread 311 and an internal thread 312. The external thread 311 is arranged on the hole wall of the connecting section 112 of the mounting hole 11 and extends along the axial spiral of the mounting hole 11. The internal thread 312 is arranged on the outer shell of the single-channel laser radar antenna 2 so as to be able to engage with the external thread 311. When the single-channel laser radar antenna 2 is inserted into the mounting hole 11, the installation accuracy of the single-channel laser radar antenna 2 is ensured by the cooperation between the outer shell of the single-channel laser radar antenna 2 and the positioning section 111 of the mounting hole 11.

[0043] The implementation principle of Example 1 is as follows: when installing a multi-channel laser radar antenna, first insert multiple single-channel laser radar antennas 2 into the corresponding mounting holes 11 so that the inclination angle of each single-channel laser radar antenna 2 meets the design requirements, and then rotate the single-channel laser radar antenna 2 so that the internal thread 312 engages with the external thread 311 to complete the installation of the single-channel laser radar antenna 2 and the laser radar antenna mounting base 1, so that the angle arrangement and aperture selection of each channel of the multi-channel laser radar antenna are more flexible, and individual modules can be changed in a short time to achieve different combinations, shortening the research and development time and effectively reducing costs.

[0044] Example 2

[0045] Reference Figure 4 The difference between this embodiment and embodiment 1 is that the multi-channel laser radar antenna in this embodiment is a four-channel laser radar antenna, and the number of corresponding single-channel laser radar antennas 2 and mounting holes 11 are both four, and the mounting holes 11 are arranged in a matrix on the laser radar antenna mounting base 1.

[0046] Example 3

[0047] Reference Figure 5 The difference between this embodiment and embodiment 2 is that a plurality of weight-reducing holes are provided on the laser radar antenna mounting base 1 in this embodiment to reduce the weight of the laser radar antenna mounting base 1, thereby making the multi-channel laser radar antenna more lightweight.

[0048] Example 4

[0049] Reference Figure 6 The difference between this embodiment and embodiment 2 is that the multi-channel laser radar antenna in this embodiment is a four-channel laser radar antenna, and the number of corresponding single-channel laser radar antennas 2 and mounting holes 11 are both four, and the mounting holes 11 are arranged side by side on the laser radar antenna mounting base 1.

[0050] Example 5

[0051] Reference Figure 7 The difference between this embodiment and embodiment 1 is that the multi-channel laser radar antenna in this embodiment is a six-channel laser radar antenna, and the number of corresponding single-channel laser radar antennas 2 and mounting holes 11 are both six, and the mounting holes 11 are arranged in a regular hexagon on the laser radar antenna mounting base 1.

[0052] Example 6

[0053] Reference Figure 8 , Fig. 9The difference between this embodiment and the first embodiment is that, since the mounting hole 11 and the laser radar antenna mounting seat 1 are arranged at an angle, the external thread 311 on the connecting section 112 of the mounting hole 11 is complicated to process and requires high processing accuracy, which makes the processing of the entire laser radar antenna mounting seat 1 inconvenient. In order to solve this problem, the connecting component 3 in this embodiment includes a connecting sleeve 321, a fastening block 322 (such as Fig.10 ), the connecting sleeve 321 is sleeved on the outer shell of the single-channel laser radar antenna 2 and is threadedly connected to the single-channel laser radar antenna 2. There are two fastening blocks 322, and the two fastening blocks 322 are opposite to each other along the circumference of the connecting sleeve 321. The laser radar antenna mounting seat 1 is provided with an assembly cylinder 323 for inserting the connecting section 112 of the mounting hole 11. The assembly cylinder 323 and the hole wall of the mounting hole 11 form a fastening groove 324. The assembly cylinder 323 is provided with a guide groove 325 connected to the fastening groove 324. The guide groove 325 corresponds to the fastening block 322 one by one and is arranged along the axial direction of the assembly cylinder 323. The assembly cylinder 323 is fixed with a mounting plate 326 at one end extending out of the mounting hole 11, and the mounting plate 326 is detachably connected to the laser radar antenna mounting seat 1 by bolts.

[0054] Reference Fig. 9 , Fig.10 and Fig.11 The laser radar antenna mounting seat 1 is provided with a rotating ring plate 327 sliding in the fastening groove 324. The cross section of the rotating ring plate 327 is L-shaped. The rotating ring plate 327 is provided with two connecting ports 328 which can be connected with the guide groove 325 respectively. The fastening block 322 can pass through the rotating ring plate 327 through the connecting ports 328. A baffle 329 is fixed on the rotating ring plate 327. The baffle 329 corresponds to the fastening block 322 one by one. The fastening block 322 can push the baffle 329 to rotate so that the connecting port 328, the fastening block 322 and the guide groove 325 are misaligned. When the fastening block 322 passes through the connecting port 328 and is inserted into the fastening groove 324, the connecting sleeve 321 drives the fastening block 322 to rotate and deviate from the connecting port 328. When the fastening block 322 rotates to the baffle 329, the fastening block 322 pushes the baffle 329 to rotate, so that the connecting port 328 and the guide groove 325 are misaligned, thereby ensuring the reliability of the fastening block 322 abutting against the groove wall of the fastening groove 324 and improving the stability of the installation of the single-channel lidar antenna 2.

[0055] The implementation principle of Example 6 is as follows: when installing the single-channel laser radar antenna 2, first thread the connecting sleeve 321 on the outer shell of the single-channel laser radar antenna 2, and then insert it into the mounting hole 11. At the same time, the fastening block 322 is inserted into the fastening groove 324 along the guide groove 325 and the connecting port 328. Then, the single-channel laser radar antenna 2 is kept stationary, and the connecting sleeve 321 is rotated. The connecting sleeve 321 drives the fastening block 322 to press against the rotating ring plate 327 while pressing the first positioning surface 41 against the second positioning surface 42, thereby completing the installation and fixation of the single-channel laser radar antenna 2, so that there is no need to turn the external thread 311 on the hole wall of the mounting hole 11, which facilitates the manufacture of the laser radar antenna mounting base 1.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A modular multi-channel laser radar antenna, characterized in that: The invention comprises a laser radar antenna mounting seat (1) and a plurality of single-channel laser radar antennas (2); the laser radar antenna mounting seat (1) is provided with mounting holes (11) corresponding one to one with the single-channel laser radar antennas (2); the single-channel laser radar antennas (2) can be inserted into the mounting holes (11) so that the inclination angle of the single-channel laser radar antennas (2) meets the design requirements; each of the single-channel laser radar antennas (2) is detachably connected to the laser radar antenna mounting seat (1) via a connecting component (3).

2. The modular multi-channel laser radar antenna according to claim 1, characterized in that: A first positioning surface (41) is provided on the hole wall of the mounting hole (11), and a second positioning surface (42) that fits with the first positioning surface (41) is provided on the outer shell of the single-channel laser radar antenna (2).

3. The modular multi-channel laser radar antenna according to claim 2, characterized in that: The planes on which the first positioning surface (41) and the second positioning surface (42) are located are both perpendicular to the axis of the mounting hole (11).

4. The modular multi-channel laser radar antenna according to claim 1, characterized in that: The connecting assembly (3) comprises an external thread (311) and an internal thread (312), wherein the external thread (311) is arranged on the hole wall of the mounting hole (11), and the internal thread (312) is arranged on the outer shell of the single-channel laser radar antenna (2) so as to be able to engage with the external thread (311).

5. The modular multi-channel laser radar antenna according to claim 2, characterized in that: The connecting assembly (3) comprises a connecting sleeve (321) and a fastening block (322); the connecting sleeve (321) is threadedly sleeved on the outer shell of the single-channel laser radar antenna (2) so as to be inserted into the mounting hole (11); a fastening groove (324) is provided on the side wall of the mounting hole (11); a guide groove (325) is provided on the hole wall of the mounting hole (11); the fastening block (322) is fixedly arranged on the connecting sleeve (321) so as to be inserted into the fastening groove (324) along the guide groove (325); the connecting sleeve (321) can drive the fastening block (322) to press against the groove wall of the fastening groove (324) so ​​that the second positioning surface (42) presses against the first positioning surface (41).

6. The modular multi-channel laser radar antenna according to claim 5, characterized in that: The laser radar antenna mounting seat (1) is provided with a rotating ring plate (327) slidingly arranged in the fastening groove (324); the rotating ring plate (327) is provided with a connecting port (328) which can be connected with the guide groove (325); the fastening block (322) can pass through the rotating ring plate (327) through the connecting port (328); a baffle (329) is fixedly arranged on the rotating ring plate (327); the fastening block (322) can push the baffle (329) to rotate, so that the connecting port (328), the fastening block (322) and the guide groove (325) are misaligned.

7. The modular multi-channel laser radar antenna according to claim 5, characterized in that: The laser radar antenna mounting seat (1) is provided with an assembly tube (323) for the connecting sleeve (321) to pass through, and the assembly tube (323) can be inserted into the mounting hole (11) so as to form the fastening groove (324) with the hole wall of the mounting hole (11), and the guide groove (325) is arranged on the assembly tube (323).

8. The modular multi-channel laser radar antenna according to claim 7, characterized in that: A mounting plate (326) is fixedly provided on the assembly cylinder (323), and the mounting plate (326) is detachably connected to the laser radar antenna mounting seat (1) via bolts.

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