CN219392267U - Laser radar - Google Patents

Abstract

The application discloses laser radar, including base, rotary platform, drive arrangement, laser transceiver module, first circuit board and second circuit board, rotary platform install in on the base, drive arrangement's power take off end with rotary platform connects, laser transceiver module install in rotary platform's top; the first circuit board is mounted on the base, a first sealing piece is arranged at the joint of the first circuit board and the base, a first sealing space is formed among the first sealing piece, the first circuit board and the base, and a circuit structure of the first circuit board is positioned in the first sealing space; the second circuit board is arranged on the rotating platform and is respectively connected with the laser receiving and transmitting module and the first circuit board through signals. The laser radar effectively ensures that the circuit board is not affected by water vapor and dust, and ensures the accuracy of data transmission.

Description

Laser radar

Technical Field

The application relates to the technical field of laser radars, in particular to a laser radar.

Background

In the field of laser radars, water resistance and dust resistance are always an important performance index of the laser radars. The triangular laser radar in the field of floor sweeping machines adopts a mechanical rotation scanning mode to sample and measure distance, gaps exist between a moving part and a fixed part, and optical and electric devices in the laser radar are exposed in the air and cannot be protected, so that inaccurate laser radar ranging is easy to cause, and the service life is shortened.

Disclosure of Invention

The aim of the embodiment of the application is that: the laser radar can solve the problems in the prior art, can effectively prevent external dust and water from entering the laser radar, and effectively protect devices inside the laser radar.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in one aspect, there is provided a lidar comprising: the laser transceiver comprises a base, a rotary platform, a driving device, a laser transceiver module, a first circuit board and a second circuit board, wherein the rotary platform is arranged on the base, a power output end of the driving device is connected with the rotary platform and can drive the rotary platform to rotate relative to the base, and the laser transceiver module is arranged above the rotary platform; the first circuit board is mounted on the base, a first sealing piece is arranged at the joint of the first circuit board and the base, a first sealing space is formed among the first sealing piece, the first circuit board and the base, and a circuit structure of the first circuit board is positioned in the first sealing space; the second circuit board is mounted on the rotary platform, and is electrically connected with the laser receiving and transmitting module and is in wireless communication with the first circuit board.

In some embodiments, a second sealing member is arranged at the connection part of the second circuit board and the rotating platform, a second sealing space is defined among the second sealing member, the second circuit board and the rotating platform, and the circuit structure of the second circuit board is located in the second sealing space.

In some embodiments, the second seal includes a first seal ring abutting at an edge of the second circuit board and a second seal ring abutting at an edge of a circuit structure of the second circuit board.

In some embodiments, the first circuit board is provided with a first communication lamp, the second circuit board is provided with a second communication lamp, and the first communication lamp and the second communication lamp are arranged oppositely.

In some embodiments, a light guide is disposed on the base, and the light guide is correspondingly disposed between the first communication lamp and the second communication lamp.

In some embodiments, the laser transceiver further comprises an upper cover, wherein the upper cover is arranged on the laser transceiver module and is connected with the base in a relative rotation manner.

In some embodiments, the upper cover is provided with a viewing window, and a third sealing member is arranged at the periphery of the viewing window and is attached to the laser transceiver module.

In some embodiments, the laser transceiver module includes a base, a laser transmitter lens assembly and a laser receiver lens assembly, the laser transmitter lens assembly being integrally formed on the base, and/or the laser receiver lens assembly being integrally formed on the base.

In some embodiments, the drive device includes a motor mounted on the base, a pulley mounted on an output shaft of the motor, and a belt disposed between the pulley and the rotating platform.

In some embodiments, a dust cap is also included and is disposed over the belt and the pulley.

The beneficial effects of this application are: the first sealing piece is arranged at the connecting position between the base and the first circuit board, so that a first sealing space is formed among the base, the first circuit board and the first circuit board, namely, the optical device and the electric device are positioned in the first sealing space, so that external dust and water vapor are effectively prevented from entering the first sealing space, the circuit structure of the first circuit board can be better protected, the ranging up-and-down data transmission of the laser radar is not affected, and the service life of the laser radar can be prolonged; in addition, through the 360 rotations of drive arrangement drive rotary platform for the base, the laser transceiver module that is located rotary platform can follow all-round rotation, can realize the effective range finding of multi-angle.

Drawings

The present application is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a lidar according to an embodiment of the present application;

FIG. 2 is a top view of a lidar according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of FIGS. 2 A-A;

FIG. 4 is a schematic diagram of an explosion structure of a lidar according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a first circuit board according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a second circuit board according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a laser transceiver module according to an embodiment of the disclosure.

In the figure:

1. a base; 2. rotating the platform; 3. a driving device; 301. a motor; 302. a belt pulley; 303. a belt; 4. a laser receiving and transmitting module; 401. a base; 402. a laser emitting lens assembly; 403. a laser receiving lens assembly; 5. a first circuit board; 6. a second circuit board; 7. a first seal; 8. a second seal; 801. a first seal ring; 802. a second seal ring; 9. a first communication lamp; 10. a second communication lamp; 11. a light guide; 12. an upper cover; 13. a viewing aperture; 14. a dust cover; 15. and (3) a bearing.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present application more clear, the technical solutions of the embodiments of the present application are described in further detail below, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, unless explicitly stated and limited otherwise, the terms "connected," "secured" and "fixed" are to be construed broadly, as for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

As shown in fig. 1 to 4, the present embodiment provides a laser radar including: the laser transceiver comprises a base 1, a rotary platform 2, a driving device 3, a laser transceiver module 4, a first circuit board 5 and a second circuit board 6, wherein the rotary platform 2 is arranged on the base 1, a power output end of the driving device 3 is connected with the rotary platform 2 and can drive the rotary platform 2 to rotate relative to the base 1, and the laser transceiver module 4 is arranged above the rotary platform 2; the first circuit board 5 is mounted on the base 1, a first sealing element 7 is arranged at the joint of the first circuit board 5 and the base 1, a first sealing space is formed among the first sealing element 7, the first circuit board 5 and the base 1, and a circuit structure of the first circuit board 5 is positioned in the first sealing space; the second circuit board 6 is mounted on the rotary platform 2, and the second circuit board 6 is electrically connected with the laser transceiver module 4, and the first circuit board 5 is in wireless communication.

Based on the above scheme, the driving device 3 can drive the rotary platform 2 to realize 360-degree omni-directional rotation relative to the base 1, the laser receiving and transmitting module 4 fixed on the rotary platform 2 can realize 360-degree omni-directional ranging, in the ranging process of the laser receiving and transmitting module 4, collected data are transmitted to the second circuit board 6, collected by the second circuit board 6 and then transmitted to the first circuit board 5, and then the collected data are output outwards after being analyzed and processed by the first circuit board 5, in order to ensure that the circuit structure on the first circuit board 5 is not influenced by external interference factors, a first sealing piece 7 is arranged at the joint of the first circuit board 5 and the base 1, the first sealing piece 7 is respectively abutted to the base 1 and the first circuit board 5 up and down, a first sealing space is effectively formed between the three, and the circuit structure of the first circuit board 5 is arranged in the first sealing space, so that the first circuit board 5 is not influenced by water vapor and dust, the upper and lower data transmission of the laser can be ensured not to be influenced, and the service life of the laser radar can be prolonged. The first sealing piece 7 is a specific soft rubber sealing ring, has certain elasticity, can be more closely attached between the first circuit board 5 and the base 1, and improves the fault tolerance rate of installation.

In order to ensure the tightness of the second circuit board 6, a second sealing member 8 is disposed at the connection position of the second circuit board 6 and the rotary platform 2, a second sealing space is defined between the second sealing member 8, the second circuit board 6 and the rotary platform 2, and the circuit structure of the second circuit board 6 is located in the second sealing space. The second sealing piece 8 is respectively abutted against the second circuit board 6 and the rotary platform 2, so that the three parts are effectively sealed, the circuit structure of the second circuit board 6 effectively avoids the interference of dust and water vapor, the data acquired by the laser receiving and transmitting module 4 can be accurately received, and the data can be effectively transmitted to the first circuit board 5.

Preferably, the second sealing member 8 includes a first sealing ring 801 and a second sealing ring 802, the first sealing ring 801 abuts against an edge of the second circuit board 6, and the second sealing ring 802 abuts against an edge of the circuit structure of the second circuit board 6. Considering that the connection structure between the rotary platform 2 and the second circuit board 6 is complex, the connection point between the rotary platform 2 and the second circuit board 6 is not less than two, so at least two sealing rings are provided, the first sealing ring 801 is disposed at the edge of the second circuit board 6 to play the outermost sealing role, and the second sealing ring 802 is disposed at the edge close to the circuit structure, so that the circuit structure can be effectively sealed.

Corresponding grooves which can accommodate the first sealing ring 801 and the second sealing ring 802 are required to be formed in the rotary platform 2, the first sealing ring 801 and the second sealing ring 802 are soft rubber sealing rings, and the first sealing ring 801 and the second sealing ring 802 are correspondingly embedded into the grooves to play roles of positioning, limiting and effective sealing.

In addition, the number of the sealing rings is required to be determined according to the connection structure of the rotary platform 2 and the second circuit board 6, not limited to the above two sealing members, one or two sealing rings may be provided in the case of a simple connection structure, and three or more sealing rings may be required in the case of a complex connection structure to ensure good sealing performance of the formed second sealing space.

As shown in fig. 5 and 6, the first circuit board 5 is provided with a first communication lamp 9, the second circuit board 6 is provided with a second communication lamp 10, and the first communication lamp 9 and the second communication lamp 10 are disposed opposite to each other. The base 1 is provided with a light guide member 11, and the light guide member 11 is correspondingly arranged between the first communication lamp 9 and the second communication lamp 10. When the laser radar works, the rotary platform 2 drives the second circuit board 6 and the laser receiving and transmitting module 4 to rotate together for distance measurement, at this time, the first communication lamp 9 and the second communication lamp 10 work to transmit data between the rotating part and the non-rotating part, and the light guide piece 11 can effectively realize data transmission between the first communication lamp 9 and the second communication lamp 10.

Specifically, the light guide member 11 may be a transparent light guide column, the center of the base 1 is provided with a communication light through hole for installing the transparent light guide column, and the transparent light guide column and the base 1 are tightly combined without a gap, so that the tightness of the first sealing space and the second sealing space can be ensured.

Optionally, the device further comprises an upper cover 12, wherein the upper cover 12 is covered on the laser transceiver module 4 and is connected with the base 1 in a relative rotation manner. The upper cover 12 and the base 1 can rotate relatively, a sealing space can be formed on the base for installing devices such as the laser receiving and transmitting module 4 and the rotary platform 2, the effect of preliminary dust prevention and water prevention can be achieved, and the devices inside the device can be effectively protected to avoid the conditions of collision and the like.

In order to facilitate the observation of the specific situation of the laser transceiver module 4, the upper cover 12 is provided with a viewing window 13, and a third sealing member is arranged at the periphery of the viewing window 13 and is attached to the laser transceiver module 4. The third sealing element can effectively prevent external dust and water vapor from entering the laser radar, and the third sealing element can be a soft rubber sealing ring. In addition, the upper cover 12 and the window hole 13 can be integrally formed, so that the assembly efficiency is improved, and the accurate opening position can be ensured.

In some embodiments, the laser transceiver module 4 includes a base 401, a laser transmitter lens assembly 402 and a laser receiver lens assembly 403, wherein the laser transmitter lens assembly 402 is integrally formed on the base 401 and/or the laser receiver lens assembly 403 is integrally formed on the base 401. The base 401, the laser emission lens component 402 and the laser receiving lens component 403 can be integrally injection molded through a die, the laser receiving and transmitting module 4 adopting the integral injection molding is not required to be assembled subsequently, the combination precision of each component of the molded laser receiving and transmitting module 4 is high through the setting of the parameters of the die, the relative positions of the laser emission lens component 402 and the laser receiving lens component 403 and the diameter of the lens are fixed, only a circuit board and the laser receiving and transmitting module 4 are required to be fixed in the laser radar assembling process, the dimming process is directly omitted, the effective efficiency and the assembly efficiency are improved, and in addition, the cost can be effectively saved by adopting the integral injection molding mode. The viewing aperture 13 is open in two, one opposite to the laser emission lens assembly 402 and the other opposite to the laser receiving lens assembly 403.

Specifically, the driving device 3 includes a motor 301, a pulley 302, and a belt 303, the motor 301 is mounted on the base 1, the pulley 302 is mounted on an output shaft of the motor 301, and the belt 303 is disposed between the pulley 302 and the rotary table 2. The motor 301 is fixed on one side of the base 1, and is started by the motor 301 to drive the belt pulley 302 to rotate, and the belt pulley 302 transmits the rotation to the rotary platform 2 through the belt 303, so that the rotary platform 2 can rotate to realize the omnidirectional ranging purpose of the laser radar.

In order to effectively protect the driving device 3, a dust cover 14 is further provided, and the dust cover 14 is disposed above the belt 303 and the pulley 302. The dust cover 14 can effectively prevent dust from entering the driving device 3, and avoid interfering with the operation of the driving device 3.

In addition, a bearing 15 is provided on the rotary platform 2, the rotary platform 2 is mounted on the base 1 through the bearing 15, an inner ring of the bearing 15 is fixed with the base 1, and the rotary platform 2 also realizes 360-degree rotation relative to the base 1 through the bearing 15.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are merely for convenience of description and to simplify the operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.

In the description of the present specification, reference to the terms "one embodiment," "example," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principles of the present application are described above in connection with specific embodiments. These descriptions are provided only for the purpose of illustrating the principles of the present application and should not be construed as limiting the scope of the present application in any way. Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification without undue burden from the present disclosure.

Claims (10)

1. A lidar, comprising: the laser transceiver comprises a base (1), a rotary platform (2), a driving device (3), a laser transceiver module (4), a first circuit board (5) and a second circuit board (6), wherein the rotary platform (2) is arranged on the base (1), a power output end of the driving device (3) is connected with the rotary platform (2) and can drive the rotary platform (2) to rotate relative to the base (1), and the laser transceiver module (4) is arranged above the rotary platform (2); the first circuit board (5) is mounted on the base (1), a first sealing piece (7) is arranged at the joint of the first circuit board (5) and the base (1), a first sealing space is formed among the first sealing piece (7), the first circuit board (5) and the base (1), and a circuit structure of the first circuit board (5) is located in the first sealing space; the second circuit board (6) is mounted on the rotary platform (2), and the second circuit board (6) is electrically connected with the laser receiving and transmitting module (4) and is in wireless communication with the first circuit board (5) respectively.

2. Lidar according to claim 1, characterized in that a second sealing member (8) is provided at the junction of the second circuit board (6) and the rotating platform (2), a second sealing space being defined between the second sealing member (8), the second circuit board (6) and the rotating platform (2), and the circuit structure of the second circuit board (6) being located in the second sealing space.

3. The lidar according to claim 2, characterized in that the second seal (8) comprises a first seal ring (801) and a second seal ring (802), the first seal ring (801) being in abutment at an edge of the second circuit board (6), the second seal ring (802) being in abutment at an edge of the circuit structure of the second circuit board (6).

4. Lidar according to claim 1, characterized in that the first circuit board (5) is provided with a first communication lamp (9), the second circuit board (6) is provided with a second communication lamp (10), the first communication lamp (9) and the second communication lamp (10) are arranged opposite to each other.

5. The lidar according to claim 4, wherein a light guide (11) is provided on the base (1), and the light guide (11) is correspondingly provided between the first communication lamp (9) and the second communication lamp (10).

6. The lidar according to claim 1, further comprising an upper cover (12), wherein the upper cover (12) is covered on the laser transceiver module (4) and is rotatably connected with the base (1).

7. The lidar according to claim 6, wherein the upper cover (12) is provided with a viewing window (13), and a third sealing member is arranged at the periphery of the viewing window (13), and the third sealing member is attached to the laser transceiver module (4).

8. The lidar according to claim 1, wherein the laser transceiver module (4) comprises a base (401), a laser emitting lens assembly (402) and a laser receiving lens assembly (403), the laser emitting lens assembly (402) being integrally formed on the base (401) and/or the laser receiving lens assembly (403) being integrally formed on the base (401).

9. The lidar according to claim 1, wherein the driving device (3) comprises a motor (301), a pulley (302) and a belt (303), the motor (301) is mounted on the base (1), the pulley (302) is mounted on an output shaft of the motor (301), and the belt (303) is arranged between the pulley (302) and the rotating platform (2).

10. The lidar according to claim 9, further comprising a dust cover (14), the dust cover (14) being arranged above the belt (303) and the pulley (302).