Radar device

Abstract

The utility model discloses a radar device which comprises an antenna housing, a radar module and a rear cover, the antenna housing and the rear cover are enclosed to form a cavity, and the radar module is installed in the cavity; the radar module comprises an antenna plate, a signal processing plate and a supporting plate. The antenna plate and the signal processing plate are installed on the two sides of the supporting plate respectively and electrically connected. Heat dissipation bosses are arranged on the two sides of the supporting plate, the heat dissipation bosses make contact with a high heating area on the antenna plate or the signal processing plate, and the side edge of the supporting plate makes contact with the rear cover. The modularized LED lamp has the advantages of simple structure, modularization, good heat dissipation performance and the like.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of radar, and in particular to a radar device. Background Art

[0002] In recent years, millimeter-wave radar technology has made significant progress in transportation applications, becoming a core technology for autonomous vehicles and advanced driver assistance systems (ADAS). Millimeter-wave radar typically operates in the 24 GHz, 77 GHz, or 79 GHz frequency bands and offers higher resolution and smaller antenna size than traditional radar. Its high frequency enables millimeter-wave radar to provide accurate distance and speed measurements in complex traffic environments, while also offering strong anti-interference capabilities and the ability to penetrate adverse weather conditions.

[0003] Currently, traffic radar systems typically utilize a multi-antenna array architecture, with the antenna, high-frequency RF, and signal processing all integrated onto a single circuit board. This design makes signal isolation difficult to maintain, resulting in low-frequency signals coupling to the RF and antenna, and analog signals being interfered with by switching frequencies during digital signal processing. This results in limited signal-to-noise ratios (SNRs) and the generation of false targets. Furthermore, this single-board design reduces radar reusability. A minor functional modification requires revising the entire radar circuit board, requiring re-spinning and patching, increasing revision cycles and risks. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the utility model provides a radar device with modular structure and good heat dissipation performance.

[0005] In order to solve the above technical problems, the technical solutions proposed by the present invention are as follows:

[0006] A radar device includes a radome, a radar module and a back cover, wherein the radome and the back cover enclose a cavity, and the radar module is installed inside the cavity; the radar module includes an antenna board, a signal processing board and a support plate, wherein the antenna board and the signal processing board are respectively installed on both sides of the support plate and are electrically connected; heat dissipation bosses are provided on both sides of the support plate, wherein the heat dissipation bosses contact high-heating areas on the antenna board or the signal processing board, and the side edges of the support plate contact the back cover.

[0007] Preferably, the back cover is a metal back cover.

[0008] Preferably, the back cover is provided with a plurality of metal bars to increase the contact area with the air.

[0009] Preferably, a spirit level is embedded on the back cover.

[0010] Preferably, a cover plate is sealed on the back cover, a circuit board is provided on the inner side of the cover plate, and the circuit board is electrically connected to the signal processing board.

[0011] Preferably, the support plate is a metal support plate, ears are provided on both sides of the support plate, the ears are fastened to the back cover, and a heat dissipation film is provided at the contact point between the ears and the back cover.

[0012] Preferably, the heat dissipation film is a graphene heat dissipation film.

[0013] Preferably, the antenna cover is a transparent plastic cover.

[0014] Preferably, the support plate is provided with an anti-fouling limiting boss.

[0015] Preferably, the antenna board and the signal processing board are connected via a connector.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The radar device of the present invention divides the radar template into an antenna board and a signal processing board, and performs a preliminary separation of the heating components. The antenna board and the signal processing board are connected by a support plate to form an independent whole. Metal heat dissipation bosses are provided on both sides of the support plate to provide a low thermal resistance channel for the high-heating areas of the signal processing board and the antenna board, thereby conducting the heat of the two boards to the support plate. The support plate is then in contact with a large metal structure (back cover) through a metal double-ear structure. Thermally conductive silicone is used between the contact points for heat conduction, and dense metal bars are provided on the back of the back cover to increase its contact area with the air. This series of combined design methods provides the convenience of modular design and solves the heat dissipation problem of modular design.

[0018] The radar device of this utility model reduces the coupling between radar signals and improves the isolation of the radar's internal structure through a highly modular design of the radar structure and an efficient heat conduction structure, thereby further enhancing the performance and reliability of millimeter-wave radar in traffic applications.

[0019] The radar device provided by the present invention adopts a highly modular design approach, in which the antenna board and the signal processing board are arranged independently, and the modular core board of the processing platform is also nested in the signal processing board. This structure can greatly improve the reuse and upgrade capabilities between radar modules. For example, by replacing the antenna board, a new radar form can be formed to meet the coverage of traffic millimeter-wave radar from 100 meters to 1000 meters; by replacing the computing core board on the signal processing board, the transformation from low computing power to high-performance edge computing capability can be achieved without the need for comprehensive and redesigned products to meet the needs of different radar applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the three-dimensional structural diagrams of the radar device in an embodiment of the present invention.

[0021] Figure 2 This is the second three-dimensional structural diagram of the radar device in an embodiment of the present invention.

[0022] Figure 3 This is a cross-sectional structural diagram of a radar device according to an embodiment of the present invention.

[0023] Figure 4 This is a bottom-up structural diagram of the radar device of the present invention.

[0024] Figure 5 This is an exploded structural diagram of the radar device of the present invention in an embodiment.

[0025] Legend: 1. Antenna cover; 2. Positioning antenna; 3. Antenna board; 4. Support plate; 401. Ear; 402. Heat dissipation film; 403. Thermal conductive layer; 404. Heat dissipation boss; 405. Anti-fouling limit boss; 5. Signal processing board; 501. Core board; 502. Connector; 6. Back cover; 601. Limiting groove; 602. Level; 603. Cover plate; 604. Circuit board; 605. Grid bar. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1-Figure 5 As shown, the radar device provided by the embodiment of the present invention can be applied to traffic millimeter wave radar or other radars. The specific structure includes three main bodies: a radome 1, a radar module and a back cover 6;

[0028] The main functions of the radome 1 are wave-transmitting, waterproof, and dust-proof, so that the radar can work normally in harsh environments;

[0029] The rear cover 6 provides mounting support, heat dissipation, and interfaces for the radar device. The radome 1 and the rear cover 6 enclose a cavity, and the radar module is located in this cavity.

[0030] The radar module is the electronic body of the device, which adopts a modular combination method and is divided into three parts: a radio frequency board with an integrated microstrip antenna (or antenna board 3), a support board 4 and a signal processing board 5; the antenna board 3 and the signal processing board 5 are respectively installed on both sides of the support board 4 and electrically connected.

[0031] Specifically, if Figure 1As shown, the radome 1 is a plastic radome made of electromagnetically transparent material. This protects the antenna from external environmental influences such as rain, snow, ice, dust, and other debris, thereby ensuring the integrity of the radar structure. The thickness of the radome 1 is an integer multiple of half the wavelength of the radar in the medium. For example, if the half wavelength of the radar in the plastic is 1 mm, the thickness of the radome 1 is an integer multiple of 1 mm. The radome 1 is connected to the back cover 6 using screws and waterproof gaskets.

[0032] Specifically, the antenna board 3 is responsible for the modulation, transmission and reception of the high-frequency electromagnetic waves of the millimeter-wave radar; the high-frequency electromagnetic waves received by the antenna board 3 are mixed and analog-to-digital converted in the onboard chip and then output as digital signals to the signal processing board 5; the antenna board 3 specifically includes a highly integrated RF module and a power supply module.

[0033] A GPS / Beidou positioning antenna 2 is installed between the radome 1 and the radar module, providing the radar with real-time latitude and longitude information of its installation location. The radar combines the target's range and azimuth data with GPS / Beidou's location information to output the target's latitude and longitude in real time, providing the ability to sense the target's absolute position. The radar can also integrate the target with an electronic map.

[0034] Specifically, the support plate 4 is a metal support plate, which has two main functions: providing connection support for the antenna board 3 and the signal processing board 5, and providing a low thermal resistance heat dissipation path for the high heat generation areas of the two boards. Figure 5 As can be seen in the exploded view shown, there are multiple metal heat dissipation bosses 404 on the metal support plate 4. The heat dissipation bosses 404 are in contact with the high-heating areas on the antenna board 3 and the signal processing board 5, such as chips, power supplies, etc., through thermally conductive silicone, so that the heat on the antenna board 3 and the signal processing board 5 can be quickly transferred to the support plate 4. In addition, a double-ear structure is provided on both sides of the support plate 4 (with ears 401 on each side). The double-ear structure is located in the limiting groove 601 of the back cover 6 and is fastened to the back cover 6 by screws. At the same time, an anti-fouling limiting boss 405 is also provided on the support plate 4 to ensure that the ears 401 are in close contact with the antenna cover 1 and the back cover 6 to ensure assembly accuracy. Specifically, a graphene heat dissipation film 402 is provided on the double-ear structure, and a thermal conductive layer 403 (such as thermal conductive silicone grease) is applied between the graphene heat dissipation film 402 and the back cover 6. The graphene heat dissipation film 402 has an extremely high thermal conductivity, which can quickly and evenly transfer the unevenly distributed heat on the double-ear structure on the support plate 4 to the thermal grease, and the thermal grease then transfers the uniform heat to the back cover 6 for heat dissipation.

[0035] Specifically, the signal processing board 5 is connected to the antenna board 3 via a connector 502 and is fixed together on the support board 4. The signal processing board 5 is responsible for radar signal data acquisition, radar signal processing, target signal output, etc. The signal processing board 5 is equipped with a processor, an external interface module, a power module, and some functional modules. The processor on the signal processing board 5 is in the form of a core board 501. This design allows the radar to select and replace processing platforms with different processing performance according to computing needs without redesigning or replacing the entire signal processing board 5. The core board 501 is packaged in a stamp hole format and is welded to the signal processing board 5 as a "large chip" for easy disassembly and assembly.

[0036] Specifically, if Figure 2 As shown, the metal rear cover 6 provides fixed support for the radar when mounted on a gantry at a traffic intersection, as well as heat dissipation for the entire radar. The rear cover 6 also features multiple heat dissipation bosses that contact the signal processing board 5 via thermally conductive silicone. Furthermore, the rear cover 6 is equipped with multiple densely packed metal gratings 605, which increase the radar's contact area with the air and improve the heat transfer path. Furthermore, the rear cover 6 features an embedded level 602, which provides a horizontal calibration method for the radar installation, ensuring a level setup.

[0037] In addition, if Figure 5 As shown, a metal cover plate 603 is mounted on the rear cover 6, connected to the rear cover 6 via screws and a waterproof gasket. Inside the cover plate 603 is a circuit board 604, electrically connected to the signal processing board 5. This circuit board 604 includes buttons and an SD card slot. If a radar malfunction occurs and software upgrades or recovery is impossible, the radar can be hard-upgraded by opening the cover 603. This eliminates the need to remove the entire rear cover 6 for upgrades, facilitating maintenance in extreme situations.

[0038] The radar device of the present invention divides the radar template into an antenna board 3 and a signal processing board 5, and performs a preliminary separation of the heating components. The antenna board 3 and the signal processing board 5 are connected by a support plate 4 to form an independent whole. Metal heat dissipation bosses 404 are provided on both sides of the support plate 4 to provide a low thermal resistance channel for the high-heating areas of the signal processing board 5 and the antenna board 3, thereby conducting the heat of the two boards to the support plate 4. The support plate 4 is then designed with a metal double-ear structure to contact the large metal structure (back cover 6). Thermal conductive silicone is used between the contact points for heat conduction, and dense metal bars are provided on the back of the back cover 6 to increase its contact area with the air. This series of combined design methods provides the convenience of modular design and solves the heat dissipation problem of modular design.

[0039] The radar device of this utility model reduces the coupling between radar signals and improves the isolation of the radar's internal structure through a highly modular design of the radar structure and an efficient heat conduction structure, thereby further enhancing the performance and reliability of millimeter-wave radar in traffic applications.

[0040] The radar device provided by the present invention adopts a highly modular design method, in which the antenna board 3 and the signal processing board 5 are arranged independently, and the core board 501 of the processing platform is also embedded in the signal processing board 5. This structure can greatly improve the reuse and upgrade capabilities between radar modules. For example, by replacing the antenna board 3, a new radar form can be formed to meet the coverage of traffic millimeter-wave radar from 100 meters to 1000 meters; by replacing the computing core board 501 on the signal processing board 5, the transformation from low computing power to high-performance edge computing capability can be achieved without the need for comprehensive and redesigned products to meet the needs of different radar applications.

[0041] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0043] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," "connect," "fix," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0044] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A radar device, characterized in that: The invention comprises an antenna cover (1), a radar module and a back cover (6), wherein the antenna cover (1) and the back cover (6) enclose a cavity, and the radar module is installed inside the cavity; the radar module comprises an antenna board (3), a signal processing board (5) and a support plate (4), wherein the antenna board (3) and the signal processing board (5) are respectively installed on both sides of the support plate (4) and are electrically connected; heat dissipation bosses (404) are provided on both sides of the support plate (4), wherein the heat dissipation bosses (404) are in contact with a high-heating area on the antenna board (3) or the signal processing board (5), and the side of the support plate (4) is in contact with the back cover (6).

2. The radar device according to claim 1, wherein The back cover (6) is a metal back cover.

3. The radar device according to claim 2, characterized in that The rear cover (6) is provided with a plurality of metal bars (605) to increase the contact area with the air.

4. The radar device according to claim 1, 2 or 3, characterized in that: A level (602) is embedded on the rear cover (6).

5. The radar device according to claim 1, 2 or 3, characterized in that: A cover plate (603) is sealed on the rear cover (6), a circuit board (604) is provided on the inner side of the cover plate (603), and the circuit board (604) is electrically connected to the signal processing board (5).

6. The radar device according to claim 1, 2 or 3, characterized in that: The support plate (4) is a metal support plate, and ears (401) are provided on both sides of the support plate (4). The ears (401) are fixedly mounted on the back cover (6), and a heat dissipation film (402) is provided at the contact point between the ears (401) and the back cover (6).

7. The radar device according to claim 6, characterized in that The heat dissipation film (402) is a graphene heat dissipation film.

8. The radar device according to claim 1, 2 or 3, characterized in that: The antenna cover (1) is a transparent plastic cover.

9. The radar device according to claim 1, 2 or 3, characterized in that: The support plate (4) is provided with an anti-fouling limiting boss (405).

10. The radar device according to claim 1, 2 or 3, characterized in that: The antenna board (3) and the signal processing board (5) are connected via a connector (502).

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