GNSS high-precision navigation antenna

Abstract

The utility model relates to the technical field of automobile antennas, in particular to a GNSS (Global Navigation Satellite System) high-precision navigation antenna. Comprising an upper shell, a lower shell, a plastic base, a metal base, a GNSS dielectric antenna, a PCB, an output line, a connector, a shielding cover, a sealing ring, a self-tapping screw, waterproof foam, a grounding piece and a hexagonal flange bolt. The GNSS dielectric antenna is installed on the PCB, the PCB is provided with a GNSS dielectric antenna installation feed hole, the PCB is installed on the metal base, the metal base is provided with PCB installation columns, the PCB is installed on the PCB installation columns of the base, the PCB is fixed to the base through screws, the metal base is fixed to the plastic base through screws, and the metal base is fixed to the plastic base through screws. The PCB is connected with an output line, and the output line is provided with a connector.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile antennas, in particular to a GNSS high-precision navigation antenna. Background Art

[0002] Provide cloud-integrated satellite navigation system (GNSS) solutions for Internet car customers. Provide consumers with high-precision lane-level navigation experience, and through GNSS combined positioning, solve the problem of vehicle-mounted positioning equipment effectively improving navigation accuracy in complex driving environments, combating unfavorable multipath interference and other unfavorable conditions, and still ensure the integrity of received satellite signals. Cooperate with C-V2X functions to solve the high accident rate caused by developed traffic and heavy traffic, and improve the comprehensive positioning capabilities of terminals. Provide real-time high-precision location solution services covering the whole country for autonomous driving car customers.

[0003] Intelligent connected cars are not only one of the most important application scenarios of 5G, but also the core direction of new infrastructure in the field of artificial intelligence. High-precision maps are a must for achieving high-level autonomous driving (level 3 and above), and will become an important time point for the launch of high-precision commercialization in the future.

[0004] Intelligent connected vehicles have laid a new direction for the development of automotive technology by integrating global positioning system navigation technology (GNSS), vehicle-to-vehicle communication technology (V2X), wireless communication (5G) and remote sensing technology, and achieved the compatibility of manual driving and autonomous driving.

[0005] The current design method places the antenna directly on the beam, and the vehicle-mounted T-BOX is also placed on the beam or other locations on the car. As a result, the complex installation environment causes the axial ratio, phase center of gravity (PCO) and phase deviation (PCV) of the GNSS (L1+L2+L5) high-precision navigation antenna to become very poor, and the product cannot meet the requirements of high-precision application scenarios. Utility Model Content

[0006] The purpose of the utility model is to provide a GNSS high-precision navigation antenna in response to the above-mentioned needs. It is a shark fin-type GNSS high-precision navigation antenna different from the roof-mounted one. It is a high-precision GNSS module antenna design structure for an automobile external, but is installed at the crossbeam position above the top glass of the front of the vehicle, matching the curved surface of the vehicle body, bringing a better solution for installation and product performance, avoiding the influence of glass film on the signal, and making the stability, reliability and anti-interference of the received signal better than other conventional built-in solutions.

[0007] GNSS high-precision navigation antenna is realized by adopting the following technical solutions:

[0008] The GNSS high-precision navigation antenna includes an upper shell, a lower shell, a plastic base, a metal base, a GNSS dielectric antenna, a PCB circuit board, an output line, a connector, a shielding cover, a sealing ring, a self-tapping screw, a waterproof foam, a grounding plate, and a hexagonal flange bolt.

[0009] The GNSS dielectric antenna is mounted on a PCB circuit board, a GNSS dielectric antenna mounting feed hole is provided on the PCB circuit board, the PCB circuit board is mounted on a metal base, a PCB circuit board mounting column is provided on the metal base, the PCB circuit board is mounted on the PCB circuit board mounting column of the base, the PCB circuit board is fixed to the base by screws, the metal base is fixed to the plastic base by screws, the PCB circuit board is connected to an output line, and the output line is equipped with a connector.

[0010] In one embodiment, the upper shell and the lower shell match the body shape and are triangular in shape, and the GNSS dielectric antenna uses a GNSS high-precision navigation dielectric antenna and is placed at the center of the upper shell and the lower shell. The upper shell and the lower shell are connected by welding to seal and waterproof.

[0011] In one embodiment, the upper shell has a smooth outer surface, which is sprayed with black paint or molded with high-gloss black plastic. The inner surface of the upper shell has large honeycomb-shaped reinforcement ribs, and uniform welding ribs are left on the honeycomb edges.

[0012] In one embodiment, the lower shell has three fixing nut boss grooves on the three corners of the outer surface, and a square hole for fixing the GNSS medium antenna (GNSS high-precision navigation shell antenna) is provided in the middle position; positioning mounting columns and screw mounting holes are provided on the edge of the square hole, and sealing grooves and sealing ribs are provided on the edge of the square hole.

[0013] In one embodiment, a uniform welding groove is left on the inner surface edge of the lower shell.

[0014] In one embodiment, the plastic base is provided with a sealing ring positioning groove, a coaxial line limiting groove, a metal base installation anti-error groove, a metal base installation screw fixing boss hole, a metal base installation through hole, and is also provided with an antenna installation positioning key column, an installation anti-error boss and an output line lead-out port.

[0015] In one embodiment, the plastic base is fixed in the square hole of the lower shell and is fixed to the positioning and mounting column of the lower shell by screws.

[0016] In one embodiment, the sealing ring is square in shape and L-shaped in cross section, and screw mounting holes are provided on the sealing ring.

[0017] In one embodiment, the metal base is configured to be a small giant shape, and an installation and fixing structure is provided on the metal base, which cooperates with a grounding plate and a hexagonal flange bolt. Under the state of installation force, the grounding plate is stretched to contact the body sheet metal and the four bosses on the metal base, thereby forming a good grounding effect to ensure and fix it on the body sheet metal.

[0018] In one embodiment, the metal base is further provided with a PCBA fixing column hole and a mounting hole fixed to the plastic base; a fixed output line outlet track groove is provided; the track groove is formed by spaced positioning special-shaped bosses to fix the routing direction.

[0019] In one embodiment, the output line is a coaxial cable. The coaxial cable harness is led out through a coaxial cable harness lead-out port, and the other end of the coaxial cable is crimped and assembled with a connector, which is a FAKRA connector and is a connector output.

[0020] The utility model GNSS high-precision navigation antenna has the following advantages:

[0021] It has the advantages of an external vehicle antenna and is not affected by the external installation environment, so the performance is guaranteed;

[0022] Avoids the size limitation of the exterior antenna.

[0023] Avoid the influence of various environmental factors on the antenna layout space in the car;

[0024] Avoid the influence of glass film and silver plating under the roof glass;

[0025] GNSS high-precision navigation antennas can be used modularly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. In the drawings:

[0027] Figure 1 This is a schematic diagram of the appearance of the GNSS high-precision navigation antenna in the embodiment of the utility model. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the appearance of the GNSS high-precision navigation antenna in the embodiment of the utility model. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the GNSS high-precision navigation antenna structure in the embodiment of the utility model. Figure 3 ;

[0030] Figure 4This is a schematic diagram of the GNSS high-precision navigation antenna structure in the embodiment of the utility model. Figure 4

[0031] Figure 5 This is a schematic diagram of the GNSS high-precision navigation antenna structure in the embodiment of the utility model. Figure 5

[0032] Figure 6 This is a schematic diagram of the GNSS high-precision navigation antenna structure in the embodiment of the utility model. Figure 6 .

[0033] Figure 7 This is a schematic diagram of the GNSS high-precision navigation antenna structure in the embodiment of the utility model. Figure 7 .

[0034] Reference numerals:

[0035] 1. Upper shell, 2. Lower shell, 3. Plastic base, 4. Metal base, 5. GNSS dielectric antenna, 6. PCB circuit board, 7. Output line, 8. Shielding cover, 9. Sealing ring, 10. Self-tapping screws, 11. Waterproof foam, 12. Grounding plate, 13. Hexagonal flange bolts, 14. Connector; 1-1. Inner surface of upper shell, 1-2. Large honeycomb reinforcement ribs, 1-3. Welding ribs; 2-1. Fixing nut boss groove, 2-2. Square hole, 2-3. Positioning mounting column, 2-4. Sealing groove, 2-5. Sealing rib; 3-1. Sealing ring positioning groove, 3-2. Coaxial line limit groove, 3-3. Metal base installation anti-mistake groove, 3-4. Metal base installation screw fixing boss hole. DETAILED DESCRIPTION

[0036] See attached Figure 1-7 The GNSS high-precision navigation antenna includes an upper shell 1, a lower shell 2, a plastic base 3, a metal base 4, a dielectric antenna 5, a PCB circuit board 6, an output line 7, a connector 14, a shielding cover 8, a sealing ring 9, a self-tapping screw 10, a waterproof foam 11, a grounding plate 12, and a hexagonal flange bolt 13.

[0037] The GNSS dielectric antenna 5 is mounted on a PCB circuit board 6, a GNSS dielectric antenna mounting feed hole is provided on the PCB circuit board 6, the PCB circuit board 6 is mounted on a metal base 4, a PCB circuit board mounting column is provided on the metal base 4, the PCB circuit board 6 is mounted on the PCB circuit board mounting column of the metal base 4, the PCB circuit board 6 and the metal base 4 are fixed by self-tapping screws 10, the metal base 4 is fixed to the plastic base 3 by screws, the PCB circuit board 6 is connected to an output line 7, and the output line 7 is equipped with a connector 14.

[0038] In one embodiment, the upper shell 1 and the lower shell 2 match the body shape and are triangular in shape. The GNSS dielectric antenna 5 uses a GNSS high-precision navigation dielectric antenna and is placed at the center of the upper shell and the lower shell. The upper shell and the lower shell are connected by welding to be sealed and waterproof.

[0039] In one embodiment, the upper shell 1 has a smooth outer surface, which is sprayed with black paint or molded with high-gloss black plastic. The inner surface 1-1 of the upper shell is provided with large honeycomb reinforcement ribs 1-2, and uniform welding ribs 1-3 are left on the edges of the large honeycomb reinforcement ribs 1-2.

[0040] In one embodiment, the lower housing 2 is provided with three fixing nut boss grooves 2-1 at three corners of the outer surface, and a square hole 2-2 for fixing the GNSS dielectric antenna 5 (GNSS high-precision navigation dielectric antenna) is provided in the middle; a positioning mounting column 2-3 and a screw mounting hole are provided on the edge of the square hole 2-2, and a sealing groove 2-4 and a sealing rib 2-5 are provided on the edge of the square hole 2-2;

[0041] In one embodiment, the lower shell 2 has a uniform welding groove on the inner surface edge;

[0042] In one embodiment, the plastic base 3 is provided with a sealing ring positioning groove 3-1, a coaxial line limiting groove 3-2, a metal base installation error prevention groove 3-3, a metal base installation screw fixing boss hole 3-4, a metal base installation through hole, and an antenna installation positioning key column, an installation error prevention boss and an output line lead-out port;

[0043] In one embodiment, the plastic base 3 is fixed in the square hole 2-2 of the lower housing and fixed to the positioning and mounting column 2-3 of the lower housing by screws;

[0044] In one embodiment, the sealing ring 9 is square in shape, and its cross section is L-shaped, and a screw installation hole is provided on the sealing ring 9;

[0045] In one embodiment, the metal base 4 is configured in a small giant shape, and a mounting and fixing structure is provided on the metal base 4, which cooperates with a grounding plate 12 and a hexagonal flange bolt 13. Under the state of the mounting force, the grounding plate is stretched to contact the body sheet metal and the four bosses on the metal base 4, so as to form a good grounding effect to ensure and fix it on the body sheet metal;

[0046] In one embodiment, the metal base 4 is further provided with a PCBA fixing column hole and a mounting hole fixed to the plastic base; a fixed output line outlet track groove is provided; the track groove is formed by spaced positioning special-shaped bosses to fix the routing direction;

[0047] In one embodiment, the output line 7 is a coaxial cable. The coaxial cable harness is led out through a coaxial cable harness lead-out port, and the other end of the coaxial cable is crimped and assembled with a connector 14, which is a FAKRA connector and is a connector output.

[0048] When installing and using the GNSS high-precision navigation antenna:

[0049] 1. The GNSS high-precision navigation antenna is installed on the crossbeam above the top glass of the front of the vehicle, matching the curved surface of the vehicle body. The antenna needs to be installed horizontally on a fixed bracket, and the installation error angle with the horizontal plane is within 5 degrees;

[0050] 2. There should be no metal obstructions directly above the 120-degree wide angle of installation; all metal parts should be away from the antenna body, and there should be no metal more than 50mm around the antenna body, and there should be no metal at low elevation angles;

[0051] 3. The antenna should be kept away from radiating interference components, such as transmitters, EMC interference sources, etc.

[0052] 4. The output line of the antenna needs to be fixed with buckles according to the pre-specified route and wrapped with foam to prevent abnormal noise;

[0053] 5. The antenna needs to be grounded sufficiently. Poor grounding will affect the performance of the antenna and even cause the antenna to fail.

[0054] 6. The GNSS high-precision navigation antenna signal output line adopts a coaxial cable. The coaxial cable harness is led out through the coaxial cable harness lead-out port. The other end of the coaxial cable is crimped and assembled with a connector. The connector adopts a FAKRA connector, which is a connector output. The connector is connected to the navigation antenna signal receiver for vehicle GNSS high-precision navigation.

Claims

1. A GNSS high-precision navigation antenna, characterized in that: Including upper shell, lower shell, plastic base, metal base, GNSS dielectric antenna, PCB circuit board, output line, connector, shielding cover, sealing ring, self-tapping screws, waterproof foam, grounding plate and hexagonal flange bolt; The GNSS dielectric antenna is mounted on a PCB circuit board, a GNSS dielectric antenna mounting feed hole is provided on the PCB circuit board, the PCB circuit board is mounted on a metal base, a PCB circuit board mounting column is provided on the metal base, the PCB circuit board is mounted on the PCB circuit board mounting column of the base, the PCB circuit board is fixed to the base by screws, the metal base is fixed to the plastic base by screws, the PCB circuit board is connected to an output line, and the output line is equipped with a connector.

2. The GNSS high-precision navigation antenna according to claim 1, characterized in that: The upper shell and the lower shell match the body shape and are triangular in shape; The GNSS dielectric antenna adopts a GNSS high-precision navigation dielectric antenna, which is placed at the center of the upper shell and the lower shell. The upper shell and the lower shell are connected by welding to be sealed and waterproof.

3. The GNSS high-precision navigation antenna according to claim 1, characterized in that: The outer surface of the upper shell is a smooth surface, the outer surface is sprayed with black paint or formed with high-gloss black plastic, the inner surface of the upper shell is a large honeycomb reinforcement rib, and uniform welding ribs are left on the honeycomb edge.

4. The GNSS high-precision navigation antenna according to claim 1, characterized in that: Three fixing nut boss grooves are arranged on the three corners of the outer surface of the lower shell, and a square hole for fixing the GNSS medium antenna is arranged in the middle; positioning mounting columns and screw mounting holes are arranged on the edge of the square hole, and sealing grooves and sealing ribs are arranged on the edge of the square hole.

5. The GNSS high-precision navigation antenna according to claim 1, characterized in that: The inner surface edge of the lower shell is provided with uniform welding grooves.

6. The GNSS high-precision navigation antenna according to claim 1, characterized in that: The plastic base is provided with a sealing ring positioning groove, a coaxial line limiting groove, a metal base installation error prevention groove, a metal base installation screw fixing boss hole and a metal base installation through hole, and is also provided with an antenna installation positioning key column, an installation error prevention boss and an output line lead-out port.

7. The GNSS high-precision navigation antenna according to claim 1, characterized in that: The plastic base is fixed in the square hole of the lower shell and is fixed on the positioning and mounting column of the lower shell by screws.

8. The GNSS high-precision navigation antenna according to claim 1, characterized in that: The sealing ring is square in shape, has an L-shaped cross section, and is provided with screw mounting holes.

9. The GNSS high-precision navigation antenna according to claim 1, characterized in that: The metal base is provided with an installation fixing structure, which cooperates with a grounding plate and a hexagonal flange bolt. Under the installation force state, the grounding plate is stretched to contact the body sheet metal and the four bosses on the metal base, so as to form a good grounding effect to ensure and fix it on the body sheet metal; The metal base is also provided with a PCBA fixing column hole and a mounting hole fixed to the plastic base; a track groove for fixing the output line is provided; the track groove is formed by spaced positioning special-shaped bosses to fix the routing direction.

10. The GNSS high-precision navigation antenna according to claim 1, characterized in that: The output line adopts a coaxial cable line, the coaxial cable harness is led out through a coaxial cable harness lead-out port, the other end of the coaxial cable line is crimped and assembled with a connector, the connector adopts a FAKRA connector, and is a connector output.

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