All-solid-state laser radar

Abstract

The utility model relates to an all-solid-state laser radar which comprises a shell and a solid-state laser radar optical machine assembly, and the solid-state laser radar optical machine assembly comprises a laser coaxial structure plate, a control fixing plate, a solid-state radar control plate, a laser driving fixing plate, a laser driving plate, a laser emitting lens, a laser receiving lens, a laser emitting plate and a laser detection plate. The laser coaxial structural plate is installed in the shell, the control fixing plate is perpendicular to the laser coaxial structural plate and fixedly arranged on one side of the laser coaxial structural plate, the solid-state radar control plate is installed on the control fixing plate, the laser driving fixing plate is perpendicular to the laser coaxial structural plate and fixedly arranged on one side of the laser coaxial structural plate, and the laser driving plate is installed on the laser driving fixing plate. The laser emitting lens and the laser receiving lens are both installed on one side of the laser coaxial structural plate, and the laser emitting plate and the laser detection plate are both installed on the other side of the laser coaxial structural plate. The solid-state laser radar has the effect of reducing the overall size of the solid-state laser radar.

Description

Technical Field

[0001] This application relates to the field of radar equipment, and in particular to an all-solid-state lidar. Background Technology

[0002] To achieve 3D measurement of objects and scenes, existing LiDAR systems typically employ single-line or multi-line scanning. This can be achieved using a single-line LiDAR with a turntable, a multi-line rotating LiDAR, or MEMS galvanometers. All these methods require moving parts, resulting in complex structures, high production costs, limited lifespan, and decreased measurement accuracy or even failure under vibration.

[0003] Solid-state lidar employs area array transmitting and receiving units, enabling 3D measurement without scanning components. Therefore, solid-state lidar offers significant advantages over traditional laser scanning lidar.

[0004] However, existing solid-state lidar has a relatively complex internal structure and a large overall size. Utility Model Content

[0005] To reduce the overall size of solid-state lidar, this application provides an all-solid-state lidar.

[0006] This application provides an all-solid-state lidar using the following technical solution:

[0007] A solid-state lidar includes a housing and a solid-state lidar optomechanical assembly installed within the housing. The solid-state lidar optomechanical assembly includes a laser coaxial structure plate, a control fixing plate, a solid-state lidar control plate, a laser drive fixing plate, a laser drive plate, a laser emitting lens, a laser receiving lens, a laser emitting plate, and a laser detection plate. The laser coaxial structure plate is installed within the housing. The control fixing plate is fixed to one side of the laser coaxial structure plate perpendicular to it. The solid-state lidar control plate is installed on the control fixing plate. The laser drive fixing plate is fixed to one side of the laser coaxial structure plate perpendicular to it. The control fixing plate and the laser drive fixing plate are perpendicular to each other. The laser drive plate is installed on the laser drive fixing plate. The laser emitting lens and the laser receiving lens are both installed on one side of the laser coaxial structure plate. The laser emitting plate and the laser detection plate are both installed on the other side of the laser coaxial structure plate.

[0008] By adopting the above technical solution, the overall structure is reduced by arranging the solid-state radar control board, laser drive board, and laser coaxial structure board perpendicularly to each other, thereby making the housing smaller and reducing the overall size of the solid-state lidar.

[0009] Optionally, the housing includes a bottom shell and an upper shell, which are fixed together by bolts to form a cavity. The solid-state lidar optomechanical assembly is installed in the cavity, and a sealing ring is embedded between the bottom shell and the upper shell.

[0010] By adopting the above technical solution, the split housing can facilitate the disassembly, assembly, and maintenance of the solid-state lidar optomechanical components, and the sealing ring can seal the assembled housing.

[0011] Optionally, a partition plate is fixed on the upper shell, the partition plate separating the laser emitting lens and the laser receiving lens.

[0012] By adopting the above technical solution, the separator separates the laser emitting lens and the laser receiving lens, thereby reducing the impact of stray light emitted by the laser emitting lens on the laser receiving lens.

[0013] Optionally, a lidar window is provided on the upper shell, and a transparent plate is installed on the lidar window.

[0014] By adopting the above technical solution, the setting of the lidar window can reduce the obstruction of laser emission and reception, and the transparent plate can protect the laser emitting lens and the laser receiving lens while reducing the obstruction of laser emission and reception.

[0015] Optionally, a heat sink is fixed on the outer surface of the bottom shell.

[0016] By adopting the above technical solution, the heat sink can accelerate the dissipation of heat inside the casing, thereby quickly reducing the casing temperature and decreasing the probability that excessively high internal temperature will affect the normal operation of components.

[0017] Optionally, a cable is provided on the side of the bottom shell opposite to the top shell, and the cable passes through the bottom shell and connects to the solid-state lidar optomechanical assembly.

[0018] By adopting the above technical solution, the cable is used to connect power supplies and other devices.

[0019] Optionally, a cable clamp is installed on the bottom shell, and the cable clamp is pressed onto the cable.

[0020] By adopting the above technical solution, the cable cover can protect the point where the cable enters the housing, reducing the probability of foreign objects entering. At the same time, it can also reinforce the cable and reduce the probability of the cable detaching from the housing under tension.

[0021] Optionally, the cable cover is provided with an observation window.

[0022] By adopting the above technical solution, the opening of the observation window makes it convenient to observe the connection status of the cable and to know whether the cable is connected normally.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] By arranging the solid-state radar control board, laser driver board, and laser coaxial structure board perpendicularly to each other, the overall structure is reduced, which allows the housing to be made smaller and the overall size of the solid-state lidar to be reduced.

[0025] The separator separates the laser emitting lens and the laser receiving lens, thereby reducing the impact of stray light emitted by the laser emitting lens on the laser receiving lens;

[0026] The design of the lidar window reduces obstruction to laser emission and reception, while the transparent plate protects the laser emitting lens and the laser receiving lens while reducing obstruction to laser emission and reception.

[0027] The heat sink can accelerate the dissipation of heat inside the housing, thereby quickly reducing the housing temperature and decreasing the probability of excessively high internal temperature affecting the normal operation of components.

[0028] The cable gland protects the point where the cable enters the housing, reducing the probability of foreign objects entering. It also reinforces the cable, reducing the probability of the cable coming out of the housing under tension. Attached Figure Description

[0029] Figure 1 This is a cross-sectional view of the overall structure of an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the structure of the solid-state lidar optomechanical component in the embodiments of this application.

[0031] Figure 3 This is a schematic diagram of the overall structure of an embodiment of this application from another perspective.

[0032] Explanation of reference numerals in the attached drawings: 1. Housing; 101. Bottom housing; 102. Top housing; 2. Solid-state lidar optomechanical assembly; 21. Laser coaxial structure plate; 22. Control mounting plate; 23. Solid-state lidar control plate; 24. Laser driver mounting plate; 25. Laser driver plate; 26. Laser emitting lens; 27. Laser receiving lens; 28. Laser emitting plate; 29. ​​Laser detection plate; 3. Sealing ring; 4. Partition plate; 5. LiDAR window; 6. Transparent plate; 7. Heat sink; 8. Cable; 9. Cable cover; 10. Observation window; 11. Transparent observation plate. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0034] First, it should be noted that in the description of this application, the use of directional terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for descriptive purposes and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of numerical quantifiers such as "first," "second," and "third" is for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, interference fits, transition fits, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium. Therefore, those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] This application discloses an all-solid-state lidar, referring to... Figure 1 and Figure 2 The system includes a rectangular hollow housing 1 and a solid-state lidar optomechanical assembly 2 installed within the housing 1. The solid-state lidar optomechanical assembly 2 includes a laser coaxial structure plate 21, a control fixing plate 22, a solid-state lidar control plate 23, a laser drive fixing plate 24, a laser drive plate 25, a laser emitting lens 26, a laser receiving lens 27, a laser emitting plate 28, and a laser detection plate 29. The laser coaxial structure plate 21 is installed inside the housing 1 and is generally rectangular. The control fixing plate 22 is fixed perpendicular to one side of the laser coaxial structure plate 21. The solid-state lidar control plate 23 is installed on the control fixing plate 22. The laser drive plate 25... The movable fixing plate 24 is fixed to one side of the laser coaxial structure plate 21 perpendicular to the laser coaxial structure plate 21. The control fixing plate 22 and the laser drive fixing plate 24 are perpendicular to each other. The laser drive plate 25 is installed on the laser drive fixing plate 24. The laser emitting lens 26 and the laser receiving lens 27 are both installed on one side of the laser coaxial structure plate 21. The laser emitting plate 28 and the laser detection plate 29 are both installed on the other side of the laser coaxial structure plate 21. By setting the solid-state radar control plate 23, the laser drive plate 25 and the laser coaxial structure plate 21 perpendicular to each other, the overall structure is reduced, thereby making the housing 1 smaller and reducing the overall size of the solid-state lidar.

[0036] Reference Figure 1The housing 1 includes a bottom shell 101 and an upper shell 102. The bottom shell 101 and the upper shell 102 are detachably fixed to each other by bolts to form a cavity. The solid-state lidar optomechanical component 2 is installed in the cavity. The laser coaxial structure plate 21 is detachably installed on the bottom shell 101 by bolts. A sealing ring 3 is embedded between the bottom shell 101 and the upper shell 102. The sealing ring 3 is made of elastic rubber. The split housing 1 can facilitate the disassembly, assembly and maintenance of the solid-state lidar optomechanical component 2. The sealing ring 3 can seal the assembled housing 1.

[0037] Reference Figure 1 and Figure 2 A partition plate 4 is integrally formed and fixed on the upper shell 102. When the upper shell 102 is installed on the bottom shell 101, the partition plate 4 is set between the laser emitting lens 26 and the laser receiving lens 27, separating the laser emitting lens 26 and the laser receiving lens 27. The partition plate 4 separates the laser emitting lens 26 and the laser receiving lens 27, thereby reducing the stray light emitted by the laser emitting lens 26 from affecting the laser receiving lens 27.

[0038] Reference Figure 1 The upper shell 102 has a lidar window 5, and a transparent plate 6 is installed on the lidar window 5. The lidar window 5 can reduce the obstruction of laser emission and reception, and the transparent plate 6 can protect the laser emission lens 26 and the laser reception lens 27 while reducing the obstruction of laser emission and reception.

[0039] Reference Figure 1 and Figure 3 A heat sink 7 is fixed on the outer surface of the bottom shell 101. The heat sink 7 can accelerate the dissipation of heat inside the shell 1, thereby quickly reducing the temperature of the shell 1 and reducing the probability that the temperature inside the shell 1 is too high and will affect the normal operation of the components. A cable 8 is passed through the bottom shell 101 on the side opposite to the upper shell 102. The cable 8 passes through the bottom shell 101 and connects to the solid-state lidar optomechanical assembly 2. The cable 8 is used to connect to the power supply and other equipment. A cable 8 cover is installed on the bottom shell 101. The cable 8 cover is pressed on the cable 8. The cable 8 cover can protect the point where the cable 8 enters the shell 1, reducing the probability of foreign objects entering. At the same time, it can also reinforce the cable 8 and reduce the probability of the cable 8 detaching from the shell 1 under tension. An observation window 10 is opened on the cable 8 cover. A transparent observation plate 11 is installed on the observation window 10. The observation window 10 can facilitate the observation of the connection status of the cable 8 and make it easy to know whether the cable 8 is connected normally.

[0040] The implementation principle of this application embodiment is as follows: The control fixing plate 22 and the laser drive fixing plate 24 are respectively installed on the adjacent two sides of the laser coaxial structure plate 21 by bolts. Then, the solid-state radar control plate 23 is installed on the control fixing plate 22 by bolts, and the laser drive plate 25 is installed on the laser drive fixing plate 24. The laser emitting lens 26, the laser receiving lens 27, the laser emitting plate 28 and the laser detection plate 29 are respectively installed on both sides of the thickness direction of the laser coaxial structure plate 21 to complete the installation of the solid-state lidar optomechanical assembly 2. Then, the solid-state lidar optomechanical assembly 2 is placed on the bottom shell 101 and fixed by bolts. Then, the upper shell 102 is installed on the bottom shell 101 and fixed on the bottom shell 101 by bolts. After the cable 8 is connected to the solid-state lidar optomechanical assembly 2, the cable 8 is pressed on the bottom shell 101 by a cable 8 cover to complete the installation of the all-solid-state lidar.

[0041] It should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.

Claims

1. A solid-state lidar, comprising a housing (1) and a solid-state lidar optomechanical assembly (2) installed within the housing (1), characterized in that: The solid-state lidar optomechanical assembly (2) includes a laser coaxial structure plate (21), a control fixing plate (22), a solid-state lidar control plate (23), a laser drive fixing plate (24), a laser drive plate (25), a laser emitting lens (26), a laser receiving lens (27), a laser emitting plate (28), and a laser detection plate (29). The laser coaxial structure plate (21) is installed inside the housing (1). The control fixing plate (22) is fixed to one side of the laser coaxial structure plate (21) perpendicular to it. The solid-state lidar control plate (23) is fixed to the laser coaxial structure plate (24), a laser drive plate (25), a laser emitting lens (26), a laser receiving lens (27), a laser emitting plate (28), and a laser detection plate (29). 3) Installed on the control fixing plate (22), the laser drive fixing plate (24) is fixed on one side of the laser coaxial structure plate (21) perpendicular to the laser coaxial structure plate (21). The control fixing plate (22) and the laser drive fixing plate (24) are perpendicular to each other. The laser drive plate (25) is installed on the laser drive fixing plate (24). The laser emitting lens (26) and the laser receiving lens (27) are both installed on one side of the laser coaxial structure plate (21). The laser emitting plate (28) and the laser detection plate (29) are both installed on the other side of the laser coaxial structure plate (21).

2. The all-solid-state lidar according to claim 1, characterized in that: The housing (1) includes a bottom shell (101) and an upper shell (102). The bottom shell (101) and the upper shell (102) are fixed together by bolts to form a cavity. The solid-state lidar optomechanical assembly (2) is installed in the cavity. A sealing ring (3) is embedded between the bottom shell (101) and the upper shell (102).

3. The all-solid-state lidar according to claim 2, characterized in that: A partition plate (4) is fixed on the upper shell (102), which separates the laser emitting lens (26) and the laser receiving lens (27).

4. The all-solid-state lidar according to claim 3, characterized in that: The upper shell (102) has a laser radar window (5), and a transparent plate (6) is installed on the laser radar window (5).

5. The all-solid-state lidar according to claim 4, characterized in that: The outer surface of the bottom shell (101) is fixed with heat sinks (7).

6. The all-solid-state lidar according to claim 5, characterized in that: A cable (8) is threaded through the bottom shell (101) on the side opposite to the upper shell (102), and the cable (8) passes through the bottom shell (101) and is connected to the solid-state lidar optomechanical assembly (2).

7. The all-solid-state lidar according to claim 6, characterized in that: A cable (8) cover is installed on the bottom shell (101), and the cable (8) cover is pressed onto the cable (8).

8. The all-solid-state lidar according to claim 7, characterized in that: The cable (8) cover has an observation window (10).

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