Laser radar, electronic equipment and vehicle

Abstract

The embodiment of the invention discloses a laser radar, electronic equipment and a vehicle, relates to the technical field of sensors, and solves the problem that the distance measurement and resolution precision of an existing laser radar is low. The laser radar comprises a housing, a protective cover and a lens group. Wherein a containing cavity is formed in the shell, and a mounting opening is formed in the shell. And the protective cover is in waterproof connection with the mounting port. The protective cover is provided with a lens containing hole, the lens containing hole is provided with a first opening and a second opening, the first opening is opposite to the installation opening and communicated with the containing cavity, and the second opening is communicated with the outside. The lens group is connected in the lens accommodating hole in a waterproof manner.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a laser radar, an electronic device and a vehicle. Background Art

[0002] Lidar is the abbreviation of laser detection and ranging system. It is a radar system that emits laser beams to detect the position, speed and other characteristic quantities of the target. The working principle of Lidar is to emit a detection signal (laser beam) to the target, and then compare the received signal reflected from the target (target echo) with the transmitted signal. After appropriate processing, relevant information about the target can be obtained, such as target distance, direction, height, speed, attitude, and even shape parameters. In this way, targets such as aircraft and missiles can be detected, tracked and identified.

[0003] The waterproof structure of existing lidar will affect the laser emission of the transmitter or the reception of the returned laser by the receiver, resulting in low ranging and resolution accuracy of the lidar. Summary of the invention

[0004] The embodiments of the present application provide a laser radar, an electronic device and a vehicle, which solve the problems of low ranging and resolution accuracy of existing laser radars.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a laser radar, comprising a housing and a protective cover. A housing is provided in the housing, and a mounting opening is provided on the housing. The protective cover can be installed at the mounting opening and is waterproofly connected to the housing. The laser radar may also include a transmitter, a receiver and a circuit board, and the transmitter and the receiver are both arranged on the circuit board. The transmitter and the receiver both include a lens group. The lens group of the transmitter is a transmitting lens group, and the lens group of the receiver is a receiving lens group. A signal processing circuit is provided on the circuit board, and the transmitter and the receiver are arranged on the circuit board and are electrically connected to the signal processing circuit. The circuit board assembly of the above-mentioned circuit board, transmitter and receiver can be arranged in the housing cavity of the housing.

[0007] The protective cover is provided with a lens accommodating hole, and the lens accommodating hole has a first opening and a second opening. The first opening of the lens accommodating hole can be opposite to the mounting opening of the housing and communicate with the accommodating cavity of the housing, and the second opening of the lens accommodating hole is communicated with the outside. There can be two lens accommodating holes, and the two lens accommodating holes can be respectively the first lens accommodating hole and the second lens accommodating hole. The transmitting end lens group of the transmitter can be installed in the first lens accommodating hole of the protective cover and be waterproofly connected to the waterproof cover. The receiving end lens group of the receiver can also be installed in the second lens accommodating hole of the protective cover and be waterproofly connected to the waterproof cover.

[0008] Therefore, the protective cover can waterproof the transmitting lens group and the receiving lens group, and is waterproofly connected to the housing, thereby ensuring the waterproof performance of the transmitting lens group, the receiving lens group and the circuit board assembly in the accommodating cavity. The laser beam emitted by the transmitter can be emitted through the second opening of the first lens accommodating hole, and the receiver can also receive the returned laser beam through the second opening of the second lens accommodating hole. The laser beam emitted by the transmitter and the laser beam received by the receiver are not affected by the protective cover, and the ranging and resolution accuracy of the laser radar are relatively high.

[0009] Furthermore, in some embodiments of the present application, the protective cover is made of plastic. In other embodiments of the present application, the protective cover is made of metal with lower cost. The prices of plastic and metal are both lower, which reduces the cost of the laser radar.

[0010] In addition, considering the field of view angle requirements of the laser radar, in some embodiments of the present application, the wall surface where the lens receiving hole on the above-mentioned protective cover is located is protruded outside the shell. When the laser radar in the embodiment of the present application is installed on a vehicle, the shell of the laser radar can be accommodated in the body of the vehicle, and the wall surface where the lens receiving hole on the protective cover is located can protrude from the body of the vehicle. Compared with the laser radar in which the entire protective cover protrudes from the shell, the laser radar in the embodiment of the present application has a partial area of ​​the protective cover protruding from the body, and the area of ​​the laser radar protruding from the body is reduced, thereby improving the integration of the laser radar and the body.

[0011] For laser radar, waterproof performance is one of the key factors affecting the performance stability and life of laser radar. There can be multiple ways to waterproof the lens group and the protective cover. As an example, in some embodiments of the present application, the lens group includes a plurality of lenses and a shell, and the plurality of lenses are installed in the shell. The outer wall of the shell is provided with a first flange along the circumferential direction, and a first mounting groove is formed on the first flange. The first mounting groove is located on the surface of the first flange opposite to the protective cover. The protective cover is provided with a first connecting protrusion that cooperates with the first mounting groove, and the first connecting protrusion is waterproofly connected to the first mounting groove, such as by waterproof adhesive bonding, and the waterproof effect is good.

[0012] In addition, the protective cover and the housing may be connected in a variety of waterproof ways. For example, in some embodiments of the present application, the housing is provided with a second mounting groove. A second connecting protrusion is provided at a position corresponding to the second mounting groove on the protective cover, and the second connecting protrusion is waterproofly connected to the second mounting groove, such as by waterproof adhesive bonding, which has a good waterproof effect.

[0013] In addition, in some embodiments of the present application, part of the lens group is disposed in the mounting opening, and the lens group is also waterproofly connected to the housing, and a waterproof path is added to enhance the waterproof effect of the lens group and the components in the housing cavity.

[0014] There are also multiple ways to waterproofly connect the lens group and the housing. In some embodiments of the present application, the outer wall of the housing of the lens group is provided with a second flange, and the second flange extends along the circumference of the housing. A support boss is provided on the housing at a position opposite to the second flange, and the support boss is waterproofly connected to the second flange, such as by waterproof adhesive, which has a good waterproof effect.

[0015] It should be noted that, in order to facilitate the assembly of the circuit board, in some embodiments of the present application, the housing includes a first housing and a second housing, and the first housing is waterproofly connected to the second housing. The installation opening can be opened on the second housing. When the circuit board is assembled and installed in the first housing, the transmitting end lens group of the transmitter and the receiving end lens group of the receiver are aligned with the installation opening of the second housing. Then, the first housing is connected to the second housing, and the assembly operation is more convenient.

[0016] Based on this, there are multiple ways to waterproofly connect the first shell and the second shell. For example, the first shell is provided with a third connection protrusion, and the second shell is provided with a third mounting groove at a position corresponding to the third connection protrusion. The third mounting groove can be waterproofly connected to the third connection protrusion, such as by waterproof adhesive bonding, so that the waterproof effect of the shell is good.

[0017] In the second aspect, the embodiment of the present application further provides an electronic device, including a controller and the laser radar described in the above embodiment. The controller is electrically connected to the laser radar. The electronic device can be a robot, a monitoring device, a smart home device (such as an air conditioner, an air purifier), etc. Since the laser radar in the electronic device of the embodiment of the present application has the same structure as the laser radar described in the above embodiment, both can solve the same technical problems and obtain the same technical effects, which will not be repeated here.

[0018] In a third aspect, the embodiment of the present application further provides a vehicle, comprising a vehicle body and the laser radar described in the above embodiment, the laser radar being mounted on the vehicle body. Since the laser radar in the vehicle of the embodiment of the present application has the same structure as the laser radar described in the above embodiment, the two can solve the same technical problems and obtain the same technical effects, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to illustrate the technical solution of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0020] Figure 1 This is a schematic diagram of the detection range of various sensors in the smart vehicle according to the embodiment of the present application;

[0021] Figure 2 A three-dimensional schematic diagram of a laser radar according to an embodiment of the present application;

[0022] Figure 3This is a schematic diagram of the structure of a circuit board assembly in a laser radar according to an embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of an explosion of the laser radar according to an embodiment of the present application;

[0024] Figure 5 This is a schematic diagram of the structure of the protective cover in the laser radar of the embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of the structure of the transmitting lens group in the laser radar of the embodiment of the present application;

[0026] Figure 7 This is a cross-sectional schematic diagram of the first laser radar according to an embodiment of the present application;

[0027] Figure 8 This is a cross-sectional schematic diagram of a second laser radar according to an embodiment of the present application;

[0028] Fig. 9 This is a cross-sectional schematic diagram of a third laser radar according to an embodiment of the present application;

[0029] Fig.10 This is a cross-sectional schematic diagram of a fourth laser radar according to an embodiment of the present application;

[0030] Fig.11 This is a schematic diagram of the structure of the second shell in the laser radar of the embodiment of the present application;

[0031] Fig.12 This is a schematic diagram of the structure of the first shell in the laser radar embodiment of the present application.

[0032] Reference numerals:

[0033] 1000-intelligent vehicle; 100-camera device; 200-laser radar; 1-housing; 101-accommodating cavity; 102-installation port; 1021-first connecting hole; 1022-second connecting hole; 103-second installation groove; 104-supporting boss; 1041-second groove; 11-first housing; 111-third installation groove; 12-second housing; 121-third connecting protrusion; 13-screw; 2-transmitter; 21-transmitting end lens group; 211-lens; 212-housing; 2121-first flange; 2121a-first mounting groove; 2121b-first groove; 2122-second flange; 2122a-protrusion; 3-receiver; 31-receiving end lens group; 4-circuit board; 5-protective cover; 501-lens accommodating hole; 5011-first opening; 5012-second opening; 501a-first lens accommodating hole; 501b-second lens accommodating hole; 51-first connecting protrusion; 52-second connecting protrusion; 05-lens sleeve; 06-waterproof glass; 300-millimeter wave radar; 400-ultrasonic sensor. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0035] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] In addition, in the present application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0037] In this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can refer to the connection of mechanical structure or physical structure. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be directly connected or indirectly connected through an intermediate medium. It can also be understood as the physical contact and electrical conduction of components, and it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as copper foil or wires on a circuit board (process control block, PCB) that can transmit electrical signals.

[0038] The present application provides a vehicle, which can be a car, an electric car, a hybrid car, etc., or a smart car. The embodiments of the present application do not impose any special restrictions on the specific form of the above-mentioned vehicles. Figure 1 The intelligent vehicle 1000 shown is used as an example for illustration.

[0039] Please refer to Figure 1 , Figure 1A stereogram of a smart vehicle 1000 provided for some embodiments of the present application. As can be seen from the above, in the present embodiment, the vehicle is a smart vehicle 1000, and a controller and a variety of sensors can be installed on the smart vehicle 1000. The controller can be connected to a variety of sensors. The smart vehicle 1000 obtains environmental information around the vehicle through a variety of sensors, and analyzes and processes the obtained information to achieve functions such as obstacle perception, target recognition, vehicle positioning, path planning, driver monitoring and reminders. Therefore, the safety, automation and comfort of vehicle driving are improved. Thus, the smart vehicle 1000 can bring people a safe and comfortable driving experience.

[0040] For example, the various sensors installed on the smart vehicle 1000 may include a camera 100, a laser radar 200, a millimeter wave radar 300, an ultrasonic sensor 400, and the like. Figure 1 The detection ranges of various sensors are shown. The millimeter wave radar 300 may include a medium-range millimeter wave radar, a short-range millimeter wave radar, and a long-range millimeter wave radar.

[0041] The laser radar 200 (LR) is the abbreviation of laser detection and ranging system. The laser radar 200 can be installed outside the door of the smart vehicle 1000 or on the front of the roof, etc., and this application does not limit this. Figure 2 and Figure 3 The laser radar 200 includes a housing 1, a transmitter 2, a receiver 3 and a circuit board 4. The housing 1 is provided with Figure 4 The housing cavity 101 shown. The transmitter 2 and the receiver 3 are both arranged (such as welded) on the circuit board 4 to obtain a circuit board assembly. The circuit board assembly is arranged in the housing cavity 101 of the housing 1. The transmitter 2 is a laser emitting device in the laser radar 200. The transmitter 2 is used to emit laser light toward the target object. The receiver 3 is a laser receiving device in the laser radar 200, and the receiver 3 is used to receive the laser light reflected by the target object. The transmitter 2 and the receiver 3 both include a lens group, and the lens group of the transmitter 2 can be called a transmitter lens group (transmitter lens, TR), and the lens group of the receiver 3 can be called a receiver lens group (receiver lens, RL). The circuit board 4 has a signal processing circuit, and the signal processing circuit is electrically connected to the transmitter 2 and the receiver 3. The signal processing circuit is used to control the emission of the transmitter 2, process the signal received by the receiver 3, and calculate the position, speed, distance and size of the target object. In addition, the circuit board 4 can be electrically connected to the above-mentioned controller. The controller can receive detection information of the laser radar 200 from the circuit board 4.

[0042] The laser radar 200 needs to be provided with a waterproof structure to ensure the waterproof effect of the circuit board assembly including the transmitter 2, the receiver 3 and the circuit board 4 in the housing 1. Figure 4 The laser radar 200 of the embodiment of the present application further includes a protective cover 5. The housing 1 is provided with an installation opening 102. The protective cover 5 can be installed at the installation opening 102 and is waterproofly connected to the housing 1. In addition, the protective cover 5 is provided with a lens receiving hole 501. The lens receiving hole 501 is used to install the transmitting end lens group 21 or the receiving end lens group 31. Figure 4 and Figure 5 The protective cover 5 shown includes two lens accommodating holes 501, which are respectively a first lens accommodating hole 501a and a second lens accommodating hole 501b. The first lens accommodating hole 501a can be used to install the transmitting end lens group 21, and the second lens accommodating hole 501b is used to install the receiving end lens group 31. In addition, the mounting port also includes two, and each lens accommodating hole 501 has a first opening 5011 and a second opening 5012. Taking the first lens accommodating hole 501a as an example, the first opening 5011 of the first lens accommodating hole 501a is opposite to the mounting port 102 and communicates with the accommodating cavity 101 of the housing 1, and the second opening 5012 of the first lens accommodating hole 501a is communicated with the outside. The outside here refers to the external environment where the laser radar 200 is located. That is, the second opening 5012 of the first lens accommodating hole 501a is not blocked on the outside. The first opening 5011 of the second lens accommodating hole 501b is also opposite to the installation opening 102 and communicates with the accommodating cavity 101 of the housing 1, and the second opening 5012 of the second lens accommodating hole 501b is communicated with the outside. The outside here also refers to the external environment of the laser radar 200. That is, the second opening 5012 of the second lens accommodating hole 501b is unobstructed to the outside.

[0043] also, Figure 4 The housing 1 shown is also provided with a first communication hole 1021 and a second communication hole 1022 communicating with the accommodating chamber 101, and both the first communication hole 1021 and the second communication hole 1022 are communicated with the mounting port 102. In addition, the first lens accommodating hole 501a of the protective cover 5 can be aligned with the first communication hole 1021, and communicated with the accommodating chamber 101 through the first communication hole 1021. The second lens hole 501b of the protective cover can be aligned with the second communication hole 1022, and communicated with the accommodating chamber 101 through the second communication hole 1022.

[0044] After the above-mentioned circuit board assembly is installed in the accommodating cavity 101 of the housing 1, the protective cover 5 is installed at the installation opening 102 of the housing 1. The first connecting hole 1021 and the first lens accommodating hole 501a of the protective cover 5 are aligned with the transmitting end lens group 21, and the second connecting hole 1022 and the second lens accommodating hole 501b of the protective cover 5 are aligned with the receiving end lens group 31. Therefore, the transmitting end lens group 21 is waterproofly connected in the first lens accommodating hole 501a, and the receiving end lens group 31 is waterproofly connected in the second lens accommodating hole 501b of the protective cover 5. Therefore, the laser generated by the transmitter 2 can be directly emitted to the external environment through the transmitting end lens group 21 and the second opening 5012 of the transmitting end lens group 21 for monitoring. The laser reflected back from the external environment is directly incident on the receiver 3 through the second opening 5012 of the receiving end lens group 31 and the receiving end lens group 31.

[0045] The transmitting end lens group 21 of the embodiment of the present application is accommodated in the first lens accommodation hole 501a, and the receiving end lens group 31 is accommodated in the second lens accommodation hole 501b. That is, the protective cover 5 can directly serve as a waterproof structure to wrap the transmitting end lens group 21 and the receiving end lens group 31. The protective cover 5 can have a good waterproof effect on the transmitting end lens group 21 and the receiving end lens group 31, and there is no need to set up additional waterproof glass for waterproofing. The laser beam emitted by the transmitter 2 can be directly emitted to the outside, and the laser beam returned from the outside can be directly incident on the receiver 3, which are not affected by the protective cover 5. The ranging and resolution accuracy of the laser radar 200 are relatively high.

[0046] It is understandable that, in order to ensure that both the transmitter 2 and the receiver 3 have a larger viewing angle, the outer end of the transmitting end lens group 21 in the transmitter 2 can be flush with the second opening 5012 of the first lens accommodating hole 501a, and the outer end of the receiving end lens group 31 can be flush with the second opening 5012 of the second lens accommodating hole 501b. Thus, the waterproof effect of the transmitting end lens group 21 and the receiving end lens group 31 can be ensured, and a larger viewing angle can be achieved.

[0047] Moreover, in some embodiments of the present application, the wall surface where the first lens accommodating hole 501a and the second lens accommodating hole 501b are located in the above-mentioned protective cover 5 can be located outside the housing 1. That is, the wall surface where the first lens accommodating hole 501a and the second lens accommodating hole 501b are located on the protective cover 5 is protruded outside the housing 1, and the wall surface of other areas on the protective cover 5 can be embedded in the wall surface of the housing 1. When the laser radar 200 of the embodiment of the present application is installed on the smart vehicle 1000, the housing 1 of the laser radar 200 can be accommodated in the body of the smart vehicle 1000. And the wall surface where the first lens accommodating hole 501a and the second lens accommodating hole 501b are located on the protective cover 5 can protrude from the body of the vehicle. Compared with the laser radar 200 in which the entire protective cover 5 protrudes from the housing 1, only part of the protective cover 5 in the laser radar 200 of the embodiment of the present application protrudes from the body of the vehicle, and the area of ​​the laser radar 200 protruding from the body of the vehicle is reduced, which improves the integration degree of the laser radar 200 with the body of the vehicle.

[0048] The above is an explanation of the installation position of the protective cover 5. In addition, the specific waterproof structure of the connection between the protective cover 5 and other components (such as the transmitting end lens group 21, the receiving end lens group 31, the housing 1, etc.) is also very important. The waterproof performance will affect the performance stability and life of the laser radar 200.

[0049] The waterproof connection between the transmitting end lens group 21, the receiving end lens group 31 and the protective cover 5 can be in various ways. Figure 6 As shown, the transmitting lens group 21 includes a plurality of lenses 211 and a housing 212, and the plurality of lenses 211 are installed in the housing 212. The outer wall of the housing 212 is provided with a first flange 2121 along the circumferential direction, and a first mounting groove 2121a is formed on the first flange 2121. The first mounting groove 2121a is located on the surface of the first flange 2121 opposite to the protective cover 5. The protective cover 5 is provided with a first connecting protrusion 51 that can cooperate with the first mounting groove 2121a. The first connecting protrusion 51 can be installed in the first mounting groove 2121a, and the two are connected in a waterproof manner. For example, waterproof glue is filled in the first mounting groove 2121a, and the first connecting protrusion 51 is installed in the first mounting groove 2121a, so as to achieve a waterproof connection between the two, the waterproof structure is simple, and the waterproof effect is also good. The circuit board assembly in the housing 1 can be isolated from water vapor, impurities, etc. in the outside, so that the performance stability of the laser radar 200 is good and the service life is also long. It is understandable that the positions of the first connecting protrusion 51 and the first mounting groove 2121a may also be exchanged, and the present application does not impose any limitation on this.

[0050] Figure 7The cross section of the first mounting groove 2121a shown in FIG. 2 is U-shaped. Moreover, the first mounting groove 2121a is an annular groove and extends along the circumference of the first flange 2121. The cross section of the first connecting protrusion 51 is also U-shaped, and the first connecting protrusion 51 is an annular protrusion. The contact area between the first mounting groove 2121a and the first connecting protrusion 51 is large, that is, the waterproof contact area is large, and the waterproof effect is better. Figure 7 The arrow in the figure indicates the transmission direction of the laser.

[0051] In some other embodiments of the present application, Figure 8 As shown, a first groove 2121b is formed at the edge of the first flange 2121, and the first groove 2121b can also be an annular groove. In addition, the shape of the first connecting protrusion 51 matches the shape of the first groove 2121b. The first connecting protrusion 51 can overlap the first groove 2121b and be waterproofly connected. For example, the first connecting protrusion 51 is waterproofly connected to the first groove 2121b of the first flange 2121 through waterproof glue.

[0052] The receiving end lens group 31 may also be a structure of a housing 212 and a plurality of lenses 211. Furthermore, the connection method between the receiving end lens group 31 and the protective cover 5 may also be the same as the connection method between the transmitting end lens group 21 and the protective cover 5, which will not be described one by one here.

[0053] Furthermore, the protective cover 5 and the housing 1 may be connected in a variety of waterproof ways. Figure 7 The housing 1 is provided with a second mounting groove 103, and the protective cover 5 is provided with a second connecting protrusion 52 at a position corresponding to the second mounting groove 103. The second connecting protrusion 52 is waterproofly connected to the second mounting groove 103. If the second connecting protrusion 52 is waterproofly connected to the second mounting groove 103 by waterproof glue, the waterproof effect is better.

[0054] Figure 7 The cross section of the second mounting groove 103 shown in FIG. 1 is U-shaped. Moreover, the second mounting groove 103 is an annular groove and extends along the circumference of the housing 1. The cross section of the second connecting protrusion 52 is also U-shaped, and the second connecting protrusion 52 is an annular protrusion. The contact area between the second mounting groove 103 and the second connecting protrusion 52 is large, that is, the waterproof contact area is large, and the waterproof effect is better.

[0055] It is understandable that the positions of the second mounting groove 103 and the second connecting protrusion 52 can also be exchanged, that is, Fig. 9 As shown, the second mounting groove 103 is located on the protective cover 5, and the second connecting protrusion 52 is arranged on the housing 1, which is not limited in the present application.

[0056] In addition, in some embodiments of the present application, part of the transmitting lens group 21 is disposed in the mounting opening 102. Moreover, the transmitting lens group 21 can be waterproofly connected to the housing 1. The laser radar 200 adds a waterproof path between the transmitting lens group 21 and the housing 1, which can enhance the waterproof effect of the circuit board assembly. It can be understood that part of the transmitting lens group 21 can also be disposed in the mounting opening 102, and the receiving lens group 31 is waterproofly connected to the housing 1, which can also enhance the waterproof effect of the circuit board assembly.

[0057] There are also many ways to waterproofly connect the source lens group 21 and the housing 1. For example, Figure 7 , Figure 8 and Fig. 9 As shown, the outer wall of the housing 212 of the transmitting lens group 21 is provided with a second flange 2122, and the second flange 2122 extends along the circumference of the housing 212. A support boss 104 is provided on the housing 1 at a position opposite to the second flange 2122, and the support boss 104 is waterproofly connected to the second flange 2122, such as by waterproof adhesive bonding, which has a good waterproof effect and a simpler structure.

[0058] Furthermore, in some embodiments, the second flange 2122 may be provided with Fig.10 The support boss 104 is provided with a second groove 1041, which may be an annular groove. Furthermore, the second groove 1041 may match the shape of the projection 2122a, so that the projection 2122a may be inserted into the second groove 1041 and connected waterproofly by waterproof glue. The contact area between the support boss 104 and the second flange 2122 is increased, thereby improving the waterproof strength of the transmitting lens group 21 and the housing 1.

[0059] Similarly, the waterproof connection structure between the receiving end lens group 31 and the housing 1 may also be the same as or similar to the waterproof connection structure between the transmitting end lens group 21 and the housing 1, which will not be described in detail here.

[0060] It should be noted that, in order to facilitate the installation of the circuit board assembly, in some embodiments of the present application, reference is made to Fig.11 and Fig.12 The housing 1 includes a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 enclose the accommodating cavity 101. The mounting opening 102, the first connecting hole 1021 and the second connecting hole 1022 can all be provided on the second housing 12. When the circuit board assembly is assembled and installed in the first housing 11, the transmitting end lens group 21 of the transmitter 2 is aligned with the first connecting hole 1021, and the receiving end lens group 31 of the receiver 3 is aligned with the second connecting hole 1022. Then, the first housing 11 and the second housing 12 are connected, such as by Figure 4 The screws 13 shown secure the connection.

[0061] Therefore, it can be understood that the connection between the first housing 11 and the second housing 12 also needs to be waterproof to ensure the waterproof effect of the above-mentioned circuit board assembly. Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the first housing 11 is provided with a third mounting groove 111, and the second housing 12 is provided with a third connecting protrusion 121 at a position corresponding to the third mounting groove 111. The third connecting protrusion 121 is waterproofly connected to the third mounting groove 111, such as by waterproof glue, so that the housing 1 has a good waterproof effect and a relatively simple waterproof structure.

[0062] and, Fig.10 The cross section of the third connecting protrusion 121 shown is U-shaped. Moreover, the third connecting protrusion 121 is an annular protrusion and extends along the circumference of the second housing 12. The cross section of the third mounting groove 111 is also U-shaped. The third mounting groove 111 is an annular groove extending along the circumference of the first housing 11. The relative area between the third connecting protrusion 121 and the third mounting groove 111 is large, and the area that can be contacted by the waterproof glue is large, and the waterproof effect is better.

[0063] It is understandable that the positions of the third installation groove 111 and the third connection protrusion 121 can also be interchanged, that is, the third connection protrusion 121 is provided on the first housing 11, and the third installation groove 111 is provided on the second housing. This application does not limit this.

[0064] Therefore, the waterproof performance of the joints of each component in the laser radar 200 of the embodiment of the present application is good, which ensures the sealing and reliability of the laser radar 200 and prolongs its service life.

[0065] In addition, the above-mentioned laser radar 200 can be applied to various electronic devices that need to measure distance and speed, such as robots, monitoring equipment, smart home equipment (such as air conditioners, air purifiers), etc., in addition to being applied to vehicles. This application does not limit the application scenarios of the laser radar 200.

[0066] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A laser radar, It is characterized in that include: A housing, wherein a receiving cavity is provided in the housing and a mounting opening is provided on the housing; A protective cover, the protective cover is waterproofly connected to the mounting port; the protective cover is provided with a lens accommodating hole, the lens accommodating hole has a first opening and a second opening, the first opening is opposite to the mounting port and communicates with the accommodating cavity, and the second opening communicates with the outside; A lens group is waterproofly connected in the lens accommodating hole.

2. The laser radar according to claim 1, It is characterized in that The protective cover is made of plastic or metal.

3. The laser radar according to claim 1 or 2, It is characterized in that The wall surface where the lens accommodating hole is located protrudes out of the shell.

4. The laser radar according to any one of claims 1 to 3, It is characterized in that The lens group comprises a housing and a plurality of lenses installed in the housing; a first flange is provided on the outer wall of the housing along the circumferential direction, and a first installation groove is formed on the surface of the first flange opposite to the protective cover; The protective cover is provided with a first connecting protrusion matched with the first mounting groove, and the first connecting protrusion is waterproofly connected to the first mounting groove.

5. The laser radar according to any one of claims 1 to 4, It is characterized in that A second mounting groove is provided on the outer wall of the housing, a second connecting protrusion is provided on the protective cover at a position corresponding to the second mounting groove, and the second connecting protrusion is waterproofly connected to the second mounting groove.

6. The laser radar according to any one of claims 1 to 5, It is characterized in that Part of the lens group is arranged in the installation opening and is waterproofly connected to the housing.

7. The laser radar according to claim 6, It is characterized in that The lens group includes a shell and a plurality of lenses installed in the shell; a second flange is circumferentially provided on the outer wall of the shell, a supporting boss is provided at a position opposite to the second flange on the outer shell, and the supporting boss is waterproofly connected to the second flange.

8. The laser radar according to any one of claims 1 to 7, It is characterized in that The housing comprises a first housing and a second housing, the first housing is provided with a third connection protrusion, a third installation groove is provided at a position corresponding to the third connection protrusion on the second housing, and the third installation groove is waterproofly connected to the third connection protrusion.

9. An electronic device, It is characterized in that include: Controller; The laser radar described in any one of claims 1 to 8, wherein the controller is electrically connected to the laser radar.

10. A vehicle, It is characterized in that include: Vehicle body; The laser radar described in any one of claims 1 to 8 is installed on the vehicle body.

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