Millimeter wave radar and automobile

Abstract

The utility model relates to the technical field of millimeter-wave radars, in particular to a millimeter-wave radar and an automobile, the millimeter-wave radar acquires radar information of different visual fields through a first function board and a second function board, and the first function board and the second function board are connected through a transmission wire harness. The second function board transmits the corresponding radar information to the first function board; the first function board is also connected with a control device of the vehicle through a transmission wire harness, the first function board correspondingly processes the radar information collected by the first function board and the radar information collected by the second function board and then transmits the processed information to the control device of the vehicle, the FOV visual field of the millimeter wave radar is improved, and the blind area monitoring requirement of the commercial vehicle can be effectively met; moreover, the layout of the first function board and the second function board is optimized, and the production cost and the assembly difficulty of the millimeter wave radar are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of millimeter-wave radar, in particular to a millimeter-wave radar and an automobile. Background Art

[0002] Commercial vehicles usually have large body sizes and blind areas, which pose great safety hazards to drivers when turning and changing lanes. Especially in the blind areas on both sides of the vehicle, since drivers cannot directly observe this area, accidents where people or objects are crushed are likely to occur.

[0003] Millimeter-wave radar can be used to monitor suspicious dangers in the blind areas of commercial vehicles and give alarms. It can detect dangerous obstacles such as vehicles and pedestrians in the blind areas far from the cab through millimeter-wave radar. Once it analyzes through corresponding algorithms that it poses a threat to vehicle safety, it will give an alarm to remind the driver to take corresponding measures to effectively avoid the occurrence of collision accidents and maximize the safety of people and vehicles. However, when the existing millimeter-wave radar is used for monitoring the blind areas on the sides of commercial vehicles, there are still the following problems: Due to the large size of commercial vehicles, the blind area range is large. When common millimeter-wave radars are installed on both sides of the vehicle body, their FOV cannot effectively cover the blind area range of commercial vehicles. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a millimeter-wave radar with a large detection field of view, which can effectively meet the blind area monitoring range of commercial vehicles, and optimize the layout and connection method of the PCBA in the millimeter-wave radar to make the assembly process simpler.

[0005] The utility model adopts the following technical solutions:

[0006] In the first aspect, a millimeter-wave radar is provided, including: a sealed housing composed of a protective cover 1 and a mounting base 4, a first functional board 2, a second functional board 3, and a transmission wire harness 5 arranged inside the sealed housing;

[0007] The first functional board 2 is arranged at a first preset angle with respect to the bottom surface of the mounting base 4, and the second functional board 3 is arranged at a second preset angle with respect to the bottom surface of the mounting base 4 for collecting radar information in different fields of view;

[0008] One end of the transmission wire harness 5 is provided with a first connector 52 and a second connector 53, and the other end of the transmission wire harness 5 is connected with a third connector 54; the first connector 52 is connected with a corresponding interface on the first functional board 2, the second connector 53 is connected with a corresponding interface on the second functional board 3, and the third connector 54 is connected with the control device of the vehicle for transmitting the processed radar information to the control device.

[0009] Preferably, the horizontal field of view of the processed radar information is set to be not less than 180 degrees.

[0010] Preferably, the value ranges of the first preset angle and the second preset angle are both 15° - 60°.

[0011] Preferably, the first functional board 2 and the second functional board 3 are arranged in a V-shaped configuration;

[0012] Or, the first functional board 2 and the second functional board 3 are arranged in an up-and-down staggered manner.

[0013] Preferably, the protective cover 1 includes a first wave output surface 11 and a second wave output surface 12. The first wave output surface 11 is arranged parallel to the first functional board 2, and the second wave output surface 12 is arranged parallel to the second functional board 3.

[0014] Preferably, the millimeter-wave radar further includes a protective sleeve 55. The bottom of the mounting base 4 is provided with a stepped through-hole 40. The protective sleeve 55 is arranged in a shape matching the stepped through-hole 40, and there is an interference fit between the two. The transmission wire harness 5 is arranged in the stepped through-hole 40 via the protective sleeve 55;

[0015] Or, the protective sleeve 55 and the transmission wire harness 5 are integrally formed.

[0016] Preferably, the mounting base 4 includes a first mounting support 41 and a second mounting support 42 respectively used for fixedly mounting the first functional board 2 and the second functional board 3. The mounting base 4 further includes a first limiting post 45 and a second limiting post 46. The first limiting post 45 and the second limiting post 46 are oppositely arranged between the first mounting support 41 and the second mounting support 42; a first limiting groove 450 is provided on the first limiting post 45, and a second limiting groove 460 is provided on the second limiting post 46; the transmission wire harness 5 is respectively limited via the first limiting groove 450 and the second limiting groove 460.

[0017] Preferably, at least one set of limiting ribs 13 are respectively provided inside the protective cover 1 and near the plane where the first limiting post 45 and the second limiting post 46 are located. The limiting ribs 13 are located above the bending section where the transmission wire harness 5 contacts the first limiting groove 450 and the second limiting groove 460, so as to cooperate with the first limiting groove 450 and the second limiting groove 460 to limit the transmission wire harness 5 after assembly, so as to prevent the transmission wire harness 5 from falling off from the first limiting groove 450 and the second limiting groove 460.

[0018] Preferably, the number of pins of the first connector 52 and the second connector 53 are set differently.

[0019] In a second aspect, a vehicle is provided, which includes a millimeter-wave radar, a vehicle body, and a control device as described in the first aspect; the control device is integrated in the vehicle body, the millimeter-wave radar is disposed on the vehicle body, and a third connector 54 of a transmission wire harness 5 on the millimeter-wave radar is connected to the control device.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] The present utility model collects radar information in different fields of view through the first functional board 2 and the second functional board 3. The first functional board 2 and the second functional board 3 are connected through a transmission wire harness 5, saving one circuit board. The second functional board 3 transmits corresponding radar information to the first functional board 2. The first functional board 2 is also connected to a control device of the vehicle through the transmission wire harness 5. The first functional board 2 processes the radar information collected by itself and the radar information collected by the second functional board 3 and then transmits the processed information to the control device of the vehicle, optimizing the layout of the first functional board 2 and the second functional board 3, reducing the number of circuit boards to reduce the production cost and assembly difficulty of the millimeter-wave radar; connecting the first functional board 2 and the second functional board 3, and the first functional board 2 and the control device of the vehicle through connectors on the transmission wire harness 5 improves the assembly efficiency and reduces the production cost. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a schematic structural diagram of a millimeter-wave radar provided by an embodiment of the present utility model;

[0024] Figure 2 is another schematic structural diagram of a millimeter-wave radar provided by an embodiment of the present utility model;

[0025] Figure 3 is a schematic structural diagram of a transmission wire harness of a millimeter-wave radar provided by an embodiment of the present utility model;

[0026] Figure 4 is a schematic structural diagram of a first functional board and a second functional board of a millimeter-wave radar provided by an embodiment of the present utility model;

[0027] Figure 5 is a schematic installation structure diagram of a protective cover and an installation base of a millimeter-wave radar provided by an embodiment of the present utility model;

[0028] Figure 6 is a schematic structural view of a mounting base of a millimeter-wave radar provided by an embodiment of the present utility model;

[0029] Figure 7 is a schematic structural view of a protective cover of a millimeter-wave radar provided by an embodiment of the present utility model;

[0030] Figure 8 is a schematic structural view of an installation structure of a waterproof rubber ring of a millimeter-wave radar provided by an embodiment of the present utility model;

[0031] Figure 9 is a schematic structural view of an installation structure of a waterproof and breathable plug of a millimeter-wave radar provided by an embodiment of the present utility model.

[0032] In all the drawings, the same reference numerals denote the same structure, where:

[0033] protective cover 1, groove 10, first wave-emitting surface 11, second wave-emitting surface 12, limiting rib 13, first functional board 2, first radar module 20, data processing module 21, first connector 22, second functional board 3, second radar module 30, second connector 31, mounting base 4, stepped through-hole 40, first mounting support 41, second mounting support 42, first heat-conducting gasket 43, second heat-conducting gasket 44, first limiting post 45, first limiting groove 450, second limiting post 46, second limiting groove 460, boss 47, mounting hole 48, transmission wire harness 5, first section of wire harness 50, second section of wire harness 51, first connector 52, second connector 53, third connector 54, protective sleeve 55, waterproof rubber ring 6, waterproof and breathable plug 7. Detailed implementation manners

[0034] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0035] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is to be construed in an open - inclusive sense, i.e., "including, but not limited to". In the description of the specification, terms such as "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" are intended to indicate that specific features, structures, materials, or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above - mentioned terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner, that is, although they may be carried in the embodiments or examples of the above - mentioned terms due to reasons such as the order and position of appearance, there is no limitation that they can be carried by one embodiment or example in a combined manner.

[0036] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality" is two or more. In addition, for example, in the description, for the same type of nouns, the method of adding "A" and "B" at the end is used to describe them as two independent individuals. In this case, the features defined with "A" and "B" are only used for the purpose of distinguishing similar individuals and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0037] When describing some embodiments, expressions such as "coupled", "coupling", and "connected" and their derivatives may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components have direct physical contact or electrical contact with each other. Another example is that when describing some embodiments, the term "coupled" may be used to indicate that two or more components have direct physical contact or electrical contact. However, the term "connected" or "coupled" may also mean that two or more components do not have direct contact with each other, but still cooperate or interact with each other, such as "optical path coupling", "wireless connection", etc. The embodiments disclosed herein are not necessarily limited to the content of the present utility model.

[0038] In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] Embodiment 1:

[0040] This embodiment provides a millimeter - wave radar, such as Figure 1 andFigure 2 As shown in the figure, it includes: a sealed housing composed of a protective cover 1 and a mounting base 4, a first functional board 2, a second functional board 3, and a transmission wire harness 5 disposed inside the sealed housing; the first functional board 2 is disposed at a first preset angle with respect to the bottom surface of the mounting base 4, and the second functional board 3 is disposed at a second preset angle with respect to the bottom surface of the mounting base 4 for collecting radar information in different fields of view; one end of the transmission wire harness 5 is provided with a first connector 52 and a second connector 53, and the other end of the transmission wire harness 5 is connected with a third connector 54; the first connector 52 is connected to a corresponding interface on the first functional board 2, the second connector 53 is connected to a corresponding interface on the second functional board 3, and the third connector 54 is connected to a control device of the vehicle for transmitting the processed radar information to the control device. The horizontal field of view range of the processed radar information is set to be not less than 180 degrees.

[0041] As Figure 3 shown in the figure, one end of the transmission wire harness 5 is divided into a first wire harness segment 50 and a second wire harness segment 51. The tail end of the first wire harness segment 50 is connected with a first connector 52, and the tail end of the second wire harness segment 51 is connected with a second connector 53. The first functional board 2 and the second functional board 3 are used for collecting radar information in different fields of view; the first functional board 2 is used for processing the radar information collected by itself and the radar information collected by the second functional board 3 and then transmitting it to the control device.

[0042] Among them, the protective cover 1 is used to protect the radar antenna from external factors such as weather, dust, or impact, ensuring that the radar antenna can work normally in various environments. Refer to Figure 2 , the protective cover 1 includes a first wave outlet surface 11 and a second wave outlet surface 12. The first wave outlet surface 11 is arranged parallel to the first functional board 2, and the second wave outlet surface 12 is arranged parallel to the second functional board 3. The protective cover 1 not only needs to have excellent wave transmission performance, but also sufficient mechanical strength and needs to consider the dimensional accuracy, and can minimize the impact on the antenna electrical parameters. Usually, the manufacturing materials are wave-transparent resins, glass fiber reinforced composite materials, and composite ceramic materials, etc. Then, according to the working wavelength, the size and shape of the protective cover 1, environmental conditions, the materials used, etc., the wall thickness of the protective cover 1 is determined in terms of electrical and structural performance. In one embodiment, refer to Figure 2 , the protective cover 1 is an approximately isosceles trapezoid structure, and the angles between the two waists of the trapezoid and the bottom edge match the preset angles, so that the electromagnetic waves emitted by the radar module on the first functional board 2 can pass through the first wave outlet surface 11, and the electromagnetic waves emitted by the radar module on the second functional board 3 can pass through the second wave outlet surface 12. The specific manufacturing method of the protective cover 1 will not be elaborated too much in this embodiment.

[0043] The first functional board 2 and the second functional board 3 are both PCBAs. The first functional board 2 and the second functional board 3 are respectively fixed on the mounting base 4 and are at a preset angle. The preset angle is set mainly to provide different scanning fields of view or coverage ranges. Specifically, it is required that the corresponding radar modules on the two functional boards can cover a 180° acquisition field of view to enhance the radar information acquisition ability. Among them, the value ranges of the first preset angle and the second preset angle are both 15° - 60°. The determination of the preset angle is related to the scanning angles of the radar modules on the first functional board 2 and the second functional board 3. More specifically, it will not be elaborated too much in this embodiment. In one embodiment, the first functional board 2 and the second functional board 3 are arranged in a V-shape; or, the first functional board 2 and the second functional board 3 are arranged staggered up and down, that is, when viewed from above, the planes where they are located are in an X shape. The advantage of this design is that according to the radar installation space on the commercial vehicle, the corresponding structure can be selected. Among them, the V-shape arrangement has less requirement for the height space of the commercial vehicle, and the staggered up and down arrangement has less requirement for the front and rear directions of the commercial vehicle, thus having higher applicability. The mounting base 4 is a fixing component of the millimeter-wave radar, which is used to carry other structures and ensure the stability of the millimeter-wave radar on the vehicle or other carriers and has a heat dissipation function. In one embodiment, the material of the mounting base 4 can be aluminum alloy.

[0044] The transmission wire harness 5 is used to connect the second functional board 3 with the first functional board 2 and the first functional board 2 with the control device of the vehicle, so as to realize the second functional board 3 transmitting the radar information it collects to the first functional board 2. Therefore, in addition to the corresponding radar modules integrated on the first functional board 2, a data processing module also needs to be integrated to process the radar information collected by the first functional board 2 and the second functional board 3 and transmit the processed data to the control device of the vehicle. The specific processing method of the data processing module will not be elaborated too much in this embodiment. In one embodiment, as Figure 4As shown in the figure, a first radar module 20, a data processing module 21, and a first connector 22 connected to the data processing module 21 are provided on the first functional board 2; a second radar module 30 and a second connector 31 connected to the second radar module 30 are provided on the second functional board 3; the first connector 52 is connected to the first connector 22, and the second connector 53 is connected to the second connector 31 to transmit the information collected by the second radar module 30 to the data processing module 21; the data processing module 21 is configured to process the radar information collected by the first radar module 20 and the second radar module 30, and transmit the processed radar information to the control device through the third connector 54.

[0045] Among them, the first radar module 20 and the second radar module 30 are the sensor parts of the millimeter-wave radar, which are used to transmit and receive electromagnetic wave signals. The data processing module 21 is responsible for receiving the original signals from the radar module and converting them into digital signals that can be used for further processing and analysis, and is used to execute signal processing algorithms. The radar information processed by the data processing module 21 is transmitted to the control device of the vehicle through the third connector 54, which enables the vehicle to perform corresponding operations according to the radar information. In one embodiment, when the millimeter-wave radar is installed on the side of the vehicle, the millimeter-wave radar is mainly used to implement functions such as blind spot monitoring, lane change assistance, and door opening warning. When in use, the vehicle body warning light is lit or the buzzer is triggered to remind the driver that there are pedestrians or vehicles on the side; or the radar information is transmitted to the control device, and the visualization of pedestrians and vehicles can be achieved on the instrument panel screen. It should be noted that the signal processing method is a prior art and will not be described in detail in this embodiment.

[0046] The first connector 22 and the second connector 31 can be surface-mounted connectors, and the number of pins of the first connector 52 and the second connector 53 are set differently. The first connector 52 is used to be plugged into the first connector 22, and the second connector 53 is used to be plugged into the second connector 31. By setting connectors with different numbers of pins, it is possible to prevent the first connector and the second connector from being installed in reverse during assembly, thereby improving the assembly efficiency of the product.

[0047] Due to the reason that the transmission wire harness 5 passes through, corresponding holes need to be provided on the mounting base 4 to allow the transmission wire harness 5 to pass through. However, the millimeter-wave radar needs to be waterproof, and the circuit components inside cannot get wet. However, the millimeter-wave radar is generally exposed to the external environment. Therefore, in one embodiment, as Figure 3 and Figure 5As shown, the millimeter-wave radar further includes a protective sleeve 55. A stepped through-hole 40 is provided at the bottom of the mounting base 4. The protective sleeve 55 is arranged to match the shape of the stepped through-hole 40, and there is an interference fit between the two. The transmission wire harness 5 is arranged in the stepped through-hole 40 via the protective sleeve 55; alternatively, the protective sleeve 55 and the transmission wire harness 5 are integrally formed.

[0048] Among them, the protective sleeve 55 is to protect the transmission line at the joint from physical damage and prevent the first wire harness 50 and the second wire harness 51 from being pulled or damaged at the joint. At the same time, the protective sleeve 55 is also used to prevent pollutants such as moisture and dust from entering the mounting base 4, thereby ensuring the reliability of the connection and the normal operation of the millimeter-wave radar. In one embodiment, the protective sleeve 55 is arranged on the transmission wire harness 5 by means of SR (English full name: Strain Relief) injection molding to prevent sliding between the protective sleeve 55 and the transmission wire harness 5, avoid the transmission wire harness 5 from being pulled off during use, and have a better waterproof effect.

[0049] The stepped through-hole 40 provides a fixed position for the protective sleeve 55. The protective sleeve 55 and the stepped through-hole 40 are in interference fit to ensure that the protective sleeve 55 is tightly installed at the bottom of the mounting base 4. In one embodiment, the function of the waterproof glue is to further seal the gap between the protective sleeve 55 and the stepped through-hole 40 to further prevent the penetration of moisture or other pollutants.

[0050] Among them, in one embodiment, the installation process of the transmission wire harness 5 includes:

[0051] First, pass one end of the transmission wire harness 5 through the stepped through-hole 40, then connect the third connector 54 to one end of the transmission wire harness 5. First, insert the protective sleeve 55 into the stepped through-hole 40, and then apply waterproof glue, so that the transmission wire harness 5 is not easily pulled off from the outside of the radar, improving the installation strength of the transmission wire harness 5. At the same time, it can also achieve the purpose of waterproof and anti-pollution.

[0052] In order to be able to fix the first functional board 2 and the second functional board 3 on the mounting support, in one embodiment, as Figure 6As shown, the mounting base 4 includes a first mounting seat 41 and a second mounting seat 42 respectively used for fixedly mounting the first functional board 2 and the second functional board 3. The mounting base 4 further includes a first limiting post 45 and a second limiting post 46, and the first limiting post 45 and the second limiting post 46 are oppositely arranged between the first mounting seat 41 and the second mounting seat 42; a first limiting groove 450 is provided on the first limiting post 45, and a second limiting groove 460 is provided on the second limiting post 46; the transmission wire harness 5 is respectively limited via the first limiting groove 450 and the second limiting groove 460. In order for the first functional board 2 and the second functional board 3 to collect radar information in different fields of view, it is necessary for the first mounting seat 41 and the second mounting seat 42 to form a preset angle with the bottom surface of the mounting base 4. The preset angle is determined according to the specific design and performance requirements of the millimeter-wave radar to ensure that the two functional boards can be mounted and receive radar signals at the best angle. Among them, the range of the preset angle is also 15° - 60°.

[0053] Through the above design, the first mounting seat 41 and the second mounting seat 42 can provide stable support and positioning for the first functional board 2 and the second functional board 3, ensuring that the two functional boards are mounted at a predetermined angle and position. This helps to improve the performance and stability of the system and ensures that the radar system can accurately detect and process signals.

[0054] The heating elements on the first functional board 2 and the second functional board 3 will generate heat during operation, and it is difficult for the heat to quickly dissipate in a closed environment. Therefore, in one embodiment, with continued reference to Figure 6 , the mounting base 4 further includes a first heat-conducting gasket 43 and a second heat-conducting gasket 44. The first heat-conducting gasket 43 is arranged on the first mounting seat 41 and is attached to the heating element on the first functional board 2; the second heat-conducting gasket 44 is arranged on the second mounting seat 42 and is attached to the heating element on the second functional board 3.

[0055] Among them, the heat-conducting gasket is the air gap filled between the heating device and the mounting seat (including the first mounting seat 41 and the second mounting seat 42). Their flexible and elastic characteristics enable them to be used to cover very uneven surfaces such as the first functional board 2 and the second functional board 3. It can make the heat conduct from the heating element to the mounting base 4. The material of the mounting base 4 is aluminum alloy, and aluminum alloy has better heat conductivity, thereby improving the efficiency and service life of the heating element.

[0056] When the first connector 52 is connected to the corresponding interface on the first functional board 2, the first section of the wire harness 50 is used to pass through the first limiting groove 450, and the first limiting groove 450 is used to limit the first section of the wire harness 50; when the second connector 53 is connected to the corresponding interface on the second functional board 3, the second section of the wire harness 51 is used to pass through the second limiting groove 460, and the second limiting groove 460 is used to limit the second section of the wire harness 51. In one embodiment, refer to Figure 7 , at least one set of limiting ribs 13 are respectively provided inside the protective cover 1 and near the plane where the first limiting post 45 and the second limiting post 46 are located. The limiting ribs 13 are located above the bending section where the transmission wire harness 5 contacts the first limiting groove 450 and the second limiting groove 460, so as to cooperate with the first limiting groove 450 and the second limiting groove 460 to limit the transmission wire harness 5 after assembly, so as to prevent the transmission wire harness 5 from falling off from the first limiting groove 450 and the second limiting groove 460.

[0057] Among them, the first limiting groove 450 is used to guide and limit the direction of the first section of the wire harness 50, and the second limiting groove 460 is used to guide and limit the direction of the second section of the wire harness 51. The first limiting groove 450 and the second limiting groove 460 match the size and shape of the first section of the wire harness 50 and the second section of the wire harness 51, and cooperate with the limiting ribs inside the protective cover 1 to fix the position of the wire harness, prevent the wire harness from shaking into the antenna FOV range, and affect the radar detection effect.

[0058] Through the two limiting posts and the two limiting grooves, the mounting base 4 can provide accurate path and position guidance for the first section of the wire harness 50 and the second section of the wire harness 51, ensuring that the two sections of the wire harness maintain the correct position and direction during the connection process. This design helps to improve the installation efficiency, reduce the risk of failures caused by improper wire harness installation, and also helps to improve the overall reliability and durability.

[0059] When the protective cover 1 is fixed on the mounting base 4, it is inevitable that there will be a gap between the two, resulting in the entry of moisture or other contaminants, affecting the normal operation of the millimeter-wave radar. In one embodiment, as Figure 6 、 Figure 7 and Figure 8 shown, the millimeter-wave radar further includes a waterproof rubber ring 6. A boss 47 is provided on the bottom surface of the mounting base 4, a groove 10 is provided on the protective cover 1, the boss 47 matches the groove 10, the waterproof rubber ring 6 is arranged in the groove 10, and the boss 47 is used to press the waterproof rubber ring 6 against the groove 10.

[0060] Among them, the shapes of the boss 47 and the groove 10 can both be arc-shaped, square or other shapes. When fixing the protective cover 1 on the mounting base 4, first place the waterproof rubber ring 6 in the groove 10, then align the boss 47 with the groove 10, so that the boss 47 presses the waterproof rubber ring 6 against the groove 10. Finally, the protective cover 1 and the mounting base 4 can be fixed by self-tapping screws to achieve the function of waterproof and dustproof.

[0061] In one embodiment, in the inner cavity of the millimeter-wave radar (i.e., the sealed housing composed of the mounting base 4 and the protective cover 1), since the components generate heat during operation, the heat causes the air pressure to be too high. The too high air pressure may affect the waterproof effect in the sealed housing, and the too high air pressure may also cause the bulging of the protective cover 1, which may affect the performance of the radar. Therefore, the inner cavity of the millimeter-wave radar should have both waterproof and breathable functions. For example, Figure 9 As shown, the millimeter-wave radar further includes a waterproof and breathable plug 7. An installation hole 48 is also provided on the bottom surface of the mounting base 4, and the waterproof and breathable plug 7 is arranged in the installation hole 48.

[0062] Among them, the working principle of the waterproof and breathable plug 7 can be divided into two parts:

[0063] 1. Breathing function: There are a large number of micropores inside the waterproof and breathable plug 7. The diameter and number of the micropores can be adjusted according to actual needs. When the internal gas pressure is higher than the external gas pressure, the gas will penetrate into the air through the micropores, thus realizing the breathing function.

[0064] 2. Waterproof function: The micropores inside the waterproof and breathable plug 7 will not allow moisture to enter its internal space. Because moisture has a certain surface tension on the surface of the micropores, when the micropore diameter is small, moisture cannot enter from the outside, thus realizing the waterproof function.

[0065] In this embodiment, the first functional board 2 and the second functional board 3 are used to collect radar information in different fields of view. The first functional board 2 and the second functional board 3 are connected by a transmission wire harness 5, saving one circuit board. The second functional board 3 transmits the corresponding radar information to the first functional board 2. The first functional board 2 is also connected to the control device of the vehicle through the transmission wire harness 5. The first functional board 2 processes the radar information collected by itself and the radar information collected by the second functional board 3 and then transmits it to the control device of the vehicle, optimizing the layout of the first functional board 2 and the second functional board 3, reducing the number of circuit boards to reduce the production cost and assembly difficulty of the millimeter-wave radar; the first functional board 2, the second functional board 3, and the first functional board 2 and the control device of the vehicle are connected through the connectors on the transmission wire harness 5, improving the assembly efficiency and reducing the production cost.

[0066] Embodiment 2:

[0067] In Embodiment 1, a millimeter-wave radar was proposed. In this embodiment, a vehicle will be proposed, which includes the millimeter-wave radar, a vehicle body, and a control device as described in Embodiment 1; the control device is integrated in the vehicle body, the millimeter-wave radar is disposed on the vehicle body, and a third connector 54 of a transmission wire harness 5 on the millimeter-wave radar is connected to the control device. Among them, for the specific structure of the millimeter-wave radar, refer to Embodiment 1 and will not be elaborated herein.

[0068] The foregoing are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A millimeter wave radar, characterized in that: include: A sealed housing composed of a protective cover (1) and a mounting base (4), a first functional board (2), a second functional board (3) and a transmission harness (5) arranged inside the sealed housing; The first functional panel (2) and the bottom surface of the mounting base (4) are arranged at a first preset angle, and the second functional panel (3) and the bottom surface of the mounting base (4) are arranged at a second preset angle, so as to collect radar information of different fields of view; One end of the transmission harness (5) is provided with a first connector (52) and a second connector (53), and the other end of the transmission harness (5) is connected to a third connector (54); the first connector (52) is connected to a corresponding interface on the first functional board (2), the second connector (53) is connected to a corresponding interface on the second functional board (3), and the third connector (54) is connected to a control device of the vehicle, so as to transmit the processed radar information to the control device.

2. The millimeter wave radar according to claim 1, characterized in that: The horizontal field of view of the processed radar information is not less than 180 degrees.

3. The millimeter wave radar according to claim 1, characterized in that: The value range of the first preset angle and the second preset angle are both 15°-60°.

4. The millimeter wave radar according to claim 1, characterized in that: The first functional panel (2) and the second functional panel (3) are arranged in an eight-shaped configuration; Alternatively, the first functional panels (2) and the second functional panels (3) are arranged in an up-and-down staggered manner.

5. The millimeter wave radar according to claim 4, characterized in that: The protective cover (1) comprises a first wave-outlet surface (11) and a second wave-outlet surface (12); the first wave-outlet surface (11) is arranged parallel to the first functional board (2); and the second wave-outlet surface (12) is arranged parallel to the second functional board (3).

6. The millimeter wave radar according to claim 1, characterized in that: The millimeter wave radar further comprises a protective cover (55); a stepped through hole (40) is provided at the bottom of the mounting base (4); the protective cover (55) and the stepped through hole (40) are arranged to match each other in shape and are interference fit therebetween; the transmission harness (5) is arranged in the stepped through hole (40) via the protective cover (55); Alternatively, the protective cover (55) and the transmission harness (5) are integrally formed.

7. The millimeter wave radar according to claim 1, characterized in that: The mounting base (4) comprises a first mounting support (41) and a second mounting support (42) for fixing and mounting the first functional board (2) and the second functional board (3), respectively; the mounting base (4) further comprises a first limiting column (45) and a second limiting column (46); the first limiting column (45) and the second limiting column (46) are relatively arranged between the first mounting support (41) and the second mounting support (42); the first limiting column (45) is provided with a first limiting groove (450), and the second limiting column (46) is provided with a second limiting groove (460); the transmission harness (5) is limited by the first limiting groove (450) and the second limiting groove (460), respectively.

8. The millimeter wave radar according to claim 7, characterized in that: At least one set of limiting ribs (13) is respectively provided inside the protective cover (1) and on a plane close to the first limiting column (45) and the second limiting column (46); the limiting ribs (13) are located above the bending section where the transmission harness (5) contacts the first limiting groove (450) and the second limiting groove (460), so as to limit the transmission harness (5) in cooperation with the first limiting groove (450) and the second limiting groove (460) after assembly, so as to prevent the transmission harness (5) from falling off from the first limiting groove (450) and the second limiting groove (460).

9. The millimeter wave radar according to claim 1, characterized in that: The number of pins of the first connector (52) and the second connector (53) are set differently.

10. An automobile, characterized in that: It comprises a millimeter-wave radar, a vehicle body and a control device as described in any one of claims 1 to 9; the control device is integrated in the vehicle body, the millimeter-wave radar is arranged on the vehicle body, and the third connector (54) of the transmission harness (5) on the millimeter-wave radar is connected to the control device.

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