Vehicle navigation system integrated through link / can transmission device and method

Abstract

The application relates to the technical field of vehicle-mounted RTK high-precision or GPS / GNSS satellite navigation, in particular to a vehicle-mounted navigation system integrated LINK / CAN transmission device and method, which comprises an exchanger upper cover, an amplification circuit filter circuit decoding chip and a passive GPS / GNSS antenna. The surface side of the passive GPS / GNSS antenna is connected with the amplification circuit filter circuit decoding chip. The vehicle-mounted navigation system integrated LINK / CAN transmission device and method, the output interface only transmits low-frequency decoded positioning coordinates and other baseband information, so only a low-frequency, easy-to-process, more stable and extremely cheap ordinary low-frequency connector is needed, and the output interface to the vehicle-mounted multimedia mainboard is only connected with a low-frequency, easy-to-process and extremely cheap ordinary low-frequency electronic wire, so that the cost is reduced, and the vehicle-mounted navigation system integrated LINK / CAN transmission device and method are more economical and practical.

Description

Technical Field

[0001] This invention relates to the technical field of vehicle-mounted RTK high-precision or GPS / GNSS satellite navigation, and in particular to an integrated vehicle navigation system via LINK / CAN transmission device and method. Background Technology

[0002] Currently, the radio frequency front-end receiving and processing units such as passive antennas, amplifier circuits, and filter circuits for in-vehicle RTK high-precision or GPS / GNSS satellite navigation, and the baseband processing units such as RTK high-precision or GPS / GNSS navigation decoding chips / modules are independent products, arranged independently, in two or three main units, or on the main board of the in-vehicle multimedia system. Because they transmit radio frequency signals to each other, they need to be connected through radio frequency coaxial cable harnesses and radio frequency connectors during operation. Radio frequency coaxial cable harnesses and radio frequency connectors have high material costs, many production processes, and complex installation. Therefore, there is a particular need for an integrated LINK / CAN transmission device and method for in-vehicle navigation systems.

[0003] However, existing vehicle navigation systems transmit radio frequency signals between GPS / GNSS receiving antennas, radio frequency transmission lines, and decoding host components. This requires consideration of radio frequency signal transmission reflection, loss, and stability, necessitating the use of expensive radio frequency coaxial cable bundles and radio frequency connectors. These components are costly, involve numerous manufacturing processes, are complex to install, and are prone to poor contact. Furthermore, radio frequency connectors are mostly controlled by foreign suppliers, resulting in long purchasing cycles and difficulties in domestic production. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated LINK / CAN transmission device and method for in-vehicle navigation systems, in order to solve the problems mentioned in the background art. Existing integrated LINK / CAN transmission devices and methods for in-vehicle navigation systems transmit radio frequency signals to each other, which require consideration of radio frequency signal transmission reflection, loss, stability, etc., and must use expensive radio frequency coaxial cable harnesses and radio frequency connectors. Radio frequency coaxial cable harnesses and radio frequency connectors are expensive, have many production processes, are complicated to install, and are prone to poor contact. Moreover, radio frequency connectors are mostly controlled by foreign suppliers, resulting in long purchase cycles and difficulties in domestic production.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated vehicle navigation system via LINK / CAN transmission device and method, comprising a switch cover and a mounting mechanism. A threaded hole is formed on one side of the switch cover. A passive GPS / GNSS antenna is attached to one side of the cover. A screw passes through one side of the threaded hole. An amplifier circuit, filter circuit, and decoding chip are connected to one side of the passive GPS / GNSS antenna. A mounting mechanism is provided on one side of the amplifier circuit, filter circuit, and decoding chip. A shielding cover is connected to one side of the mounting mechanism. A LINK / CAN transceiver is connected to one side of the shielding cover. A LINK / CAN interface is connected to one side of the shielding cover. A lower cover is connected to one side of the shielding cover. An electronic wire is located on one side of the LINK / CAN interface. A wire outlet hole is formed on one side of the lower cover. A connecting block is connected to one side of the lower cover. A threaded groove is formed on one side of the connecting block.

[0006] The mounting mechanism includes a mounting plate, a first rotary key, a clamping plate, a first limiting groove, a first screw, a first clamping block, a first limiting block, a second rotary key, a second limiting groove, a second screw, a second clamping block, and a second limiting block. The mounting plate is attached to one side of the surface of the amplifier circuit, filter circuit, and decoding chip. A first rotary key is mounted on one side of the surface of the mounting plate. A clamping plate is connected to one side of the surface of the mounting plate. A first limiting groove is formed inside the mounting plate. A first screw is fixedly connected to one side of the surface of the first rotary key. A first clamping block is threadedly connected to one side of the surface of the first screw. A first limiting block is fixedly connected to one side of the surface of the first clamping block. A second rotary key is mounted on one side of the surface of the clamping plate. A second limiting groove is formed inside the clamping plate. A second screw is fixedly connected to one side of the surface of the second rotary key. A second clamping block is threadedly connected to one side of the surface of the second screw. A second limiting block is fixedly connected to one side of the surface of the second clamping block.

[0007] Preferably, the threaded holes are provided in three sets, the screw is threadedly connected to the connecting block through the threaded groove, and the connecting block is provided in three sets.

[0008] Preferably, the electronic wires are provided in three sets, the electronic wires pass through the wire outlet holes, and the other end of the electronic wires is connected to the vehicle's mainboard.

[0009] Preferably, the amplifier circuit, filter circuit, and decoding chip are located between the passive GPS / GNSS antenna and the mounting plate, the LINK / CAN transceiver is electrically connected to the LINK / CAN interface, and the electronic lines are respectively the LINK / CAN transmission line, the POWER transmission line, and the GND transmission line.

[0010] Preferably, the passive GPS / GNSS antenna is electrically connected to the amplifier circuit, filter circuit, and decoding chip, and the amplifier circuit, filter circuit, and decoding chip are electrically connected to the LINK / CAN transceiver.

[0011] Preferably, the first clamping block is provided in five sets, the first clamping block is attached to the amplifier circuit, filter circuit, and decoding chip, and the second clamping block is attached to the amplifier circuit, filter circuit, and decoding chip.

[0012] Preferably, the first limiting block is disposed inside the first limiting groove, the threads at both ends of the second screw are in opposite directions, and the second limiting block is disposed inside the second limiting groove.

[0013] Preferably, the amplifier circuit, filter circuit, and decoding chip include an amplifier circuit, a filter circuit, a decoding chip, and an MCU control processor, and the electronic wire is a low-frequency wire harness.

[0014] Preferably, the product principle includes the following steps:

[0015] S1: After receiving satellite navigation signals, the passive GPS / GNSS antenna transmits them to the low-noise amplifier circuit and filter circuit;

[0016] S2: The low-noise amplifier circuit amplifies the satellite navigation signal, and the filter circuit suppresses noise signals outside the frequency of the satellite navigation signal;

[0017] S3: After being amplified and filtered, the satellite navigation signal is transmitted to the vehicle-mounted RTK high-precision or GPS / GNSS navigation decoding chip / module for signal processing and decoding to obtain the corresponding baseband information such as positioning coordinates;

[0018] S4: The decoded positioning coordinates and other baseband information are processed by the MCU controller to control the operation of the LINK / CAN transceiver. Then, the decoded positioning coordinates and other information are transmitted to the vehicle multimedia motherboard via the LINK / CAN interface and low-frequency electronic wires through the LINK / CAN transceiver.

[0019] Preferably, it includes the following steps:

[0020] S1: The amplifier circuit, filter circuit, and vehicle-mounted RTK high-precision or GPS / GNSS navigation decoding module are integrated into the amplifier circuit, filter circuit, and decoding chip.

[0021] S2: Remove the RF coaxial cable and RF connector, and replace them with MCU control;

[0022] S3: Transmit and receive via low-cost LINK / CAN electronic wires;

[0023] S4: The amplifier circuit, filter circuit, decoding chip, LINK / CAN transceiver, and LINK / CAN interface are integrated into the same housing to form a single main unit.

[0024] Compared with the prior art, the beneficial effects of the present invention are: the vehicle navigation system integrates the LINK / CAN transmission device and method, and the output interface only transmits low-frequency decoded baseband information such as positioning coordinates. Therefore, it only requires a low-frequency, easy-to-process, and extremely inexpensive ordinary low-frequency connector. The output interface to the vehicle multimedia motherboard also only uses a low-frequency, easy-to-process, and extremely inexpensive ordinary low-frequency electronic wire, which reduces costs and makes it more economical and practical. Attached Figure Description

[0025] Figure 1 This is an exploded side view of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure in which the electronic wire and the outlet hole of the present invention cooperate.

[0027] Figure 3 This is a cross-sectional view of the installation mechanism of the present invention;

[0028] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0029] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B;

[0030] Figure 6 This is a flowchart of the method of the present invention;

[0031] Figure 7 This is a block diagram illustrating the principle of the product and navigation system of this invention.

[0032] Figure 8 This is a flowchart of the integrated LINK / CAN transmission device and method for the vehicle navigation system described in this invention.

[0033] In the diagram: 1. Top cover; 2. Threaded hole; 3. Passive GPS antenna; 4. Screw; 5. Amplifier circuit, filter circuit, decoding chip; 6. Mounting mechanism; 601. Mounting plate; 602. First rotary key; 603. Clamping plate; 604. First limiting groove; 605. First screw; 606. First clamping block; 607. First limiting block; 608. Second rotary key; 609. Second limiting groove; 610. Second screw; 611. Second clamping block; 612. Second limiting block; 7. Shielding cover; 8. LINK / CAN transceiver; 9. LINK / CAN interface; 10. Bottom cover; 11. Electronic wire; 12. Outlet hole; 13. Connecting block; 14. Threaded groove. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figure 1-8 This invention provides a technical solution: an integrated vehicle navigation system via a LINK / CAN transmission device and method, comprising a switch cover 1 and a mounting mechanism 6. A threaded hole 2 is formed on one side of the surface of the switch cover 1. A passive GPS / GNSS antenna 3 is attached to one side of the surface of the cover 1. A screw 4 passes through one side of the surface of the threaded hole 2. An amplifier circuit, filter circuit, and decoding chip 5 are connected to one side of the surface of the passive GPS / GNSS antenna 3. The mounting mechanism 6 is provided on one side of the surface of the amplifier circuit, filter circuit, and decoding chip 5. A shielding cover 7 is connected to one side of the surface of the mounting mechanism 6. A LINK / CAN transceiver 8 is connected to one side of the surface of the shielding cover 7. A LINK / CAN interface 9 is connected to one side of the surface of the shielding cover 7. A lower cover 10 is connected to one side of the surface of the shielding cover 7. An electronic wire 11 is located on one side of the surface of the LINK / CAN interface 9. A wire outlet hole 12 is formed on one side of the surface of the lower cover 10. A connecting block 13 is connected to one side, and a threaded groove 14 is opened on one side of the surface of the connecting block 13. In use, the vehicle-mounted RTK high-precision or GPS / GNSS satellite navigation passive GPS / GNSS antenna 3, amplifier circuit, filter circuit, decoding chip 5 and LINK / CAN transceiver 8 are integrated into one unit in the same housing. The amplifier circuit, filter circuit, decoding chip 5 includes an amplifier circuit, a filter circuit and a vehicle-mounted RTK high-precision or GPS / GNSS navigation decoding chip / module. The baseband information such as the positioning coordinates after decoding by the vehicle-mounted RTK high-precision or GPS / GNSS satellite navigation decoding chip / module is controlled by the MCU and then transmitted to the vehicle-mounted multimedia main unit through the LINK / CAN transceiver 8 and electronic wire 11. This avoids the transmission through radio frequency signals and only requires the use of low-frequency, easy-to-process and extremely cheap ordinary low-frequency connectors, which reduces costs and is more economical and practical.

[0036] Furthermore, the mounting mechanism 6 includes a mounting plate 601, a first rotary key 602, a clamping plate 603, a first limiting groove 604, a first screw 605, a first clamping block 606, a first limiting block 607, a second rotary key 608, a second limiting groove 609, a second screw 610, a second clamping block 611, and a second limiting block 612. The mounting plate 601 is attached to one side of the surface of the amplifier circuit, filter circuit, and decoding chip 5. The first rotary key 602 is mounted on one side of the surface of the mounting plate 601. The clamping plate 603 is connected to one side of the surface of the mounting plate 601. The first limiting groove 604 is formed inside the mounting plate 601. The first screw 605 is fixedly connected to one side of the surface of the first rotary key 602, and the first screw 605 is threaded onto one side of the surface of the first screw. A first clamping block 606 is attached, and a first limiting block 607 is fixedly connected to one side of the surface of the first clamping block 606. A second rotating key 608 is installed on one side of the surface of the clamping plate 603. A second limiting groove 609 is opened inside the clamping plate 603. A second screw 610 is fixedly connected to one side of the surface of the second rotating key 608. A second clamping block 611 is threadedly connected to one side of the surface of the second screw 610. A second limiting block 612 is fixedly connected to one side of the surface of the second clamping block 611. The mounting plate 601, first rotating key 602, clamping plate 603, first limiting groove 604, first screw 605, first clamping block 606, first limiting block 607, second rotating key 608, second limiting groove 609, second screw 610, and second clamping block 602 are connected together. 11. The setting of the second limiting block 612 is as follows: When it is necessary to install the amplifier circuit filter circuit decoding chip 5, first place the amplifier circuit filter circuit decoding chip 5 on the surface of the mounting plate 601, and then push the amplifier circuit filter circuit decoding chip 5 so that one end of the amplifier circuit filter circuit decoding chip 5 engages with the clamping plate 603. At this time, rotate the second rotary key 608, so that the second rotary key 608 drives the second screw 610 to rotate. Since the second clamping block 611 cannot rotate due to the restriction of the second limiting block 612, the second screw 610 drives the two sets of second clamping blocks 611 to move relative to each other along the direction of the second screw 610. When the two sets of second clamping blocks 611 clamp the amplifier circuit filter circuit decoding chip 5, stop rotating the second rotary key 610. First, press key 608, then rotate the first rotary key 602. At this time, the first rotary key 602 drives the first screw 605 to rotate. Since the first clamping block 606 is restricted by the first limiting block 607 and cannot rotate, the first screw 605 drives the first clamping block 606 to move along the direction of the first screw 605. When the first clamping block 606 moves to the edge of the amplifier circuit filter circuit decoding chip 5, stop rotating the first rotary key 602. By operating the five sets of first rotary keys 602 in sequence, the five sets of first clamping blocks 606 can adapt to the edge contour of the amplifier circuit filter circuit decoding chip 5 to clamp and fix the amplifier circuit filter circuit decoding chip 5, thereby meeting the installation requirements of amplifier circuit filter circuit decoding chips 5 of different sizes and shapes.This facilitates the installation and fixation of different models of amplifier circuit, filter circuit, and decoder chip 5 when replacing them later.

[0037] Furthermore, the threaded holes 2 are provided in three sets, and the screws 4 are threadedly connected to the connecting blocks 13 through the threaded grooves 14. The connecting blocks 13 are provided in three sets. Through the arrangement of the threaded holes 2 and the threaded grooves 14, the three sets of threaded holes 2 and threaded grooves 14 are arranged in a triangular pattern during use, which facilitates the connection and fixation of the upper cover 1 and the lower cover 10 by the screws 4.

[0038] Furthermore, the electronic wire 11 is provided in three sets. The electronic wire 11 passes through the wire outlet 12, and the other end of the electronic wire 11 is connected to the vehicle's mainboard. Through the setting of the electronic wire 11, the electronic wire 11 can transmit the positioning coordinate information to the vehicle's multimedia mainboard during use, so that the user can conveniently view the positioning information.

[0039] Furthermore, the amplifier circuit, filter circuit, and decoding chip 5 are located between the passive GPS antenna 3 and the mounting plate 601. The LINK / CAN transceiver 8 is electrically connected to the LINK / CAN interface 9. The electronic wires 11 are the LINK / CAN transmission line, the POWER transmission line, and the GND transmission line, respectively. Through the configuration of the LINK / CAN transceiver 8, during use, the LINK / CAN transceiver 8 can receive the decoded positioning coordinate information, and then the LINK / CAN transceiver 8 transmits the information out through the LINK / CAN interface 9.

[0040] Furthermore, the passive GPS / GNSS antenna 3 is electrically connected to the amplifier circuit, filter circuit, and decoding chip 5, which in turn is electrically connected to the LINK / CAN transceiver 8. Through the configuration of the passive GPS / GNSS antenna 3, it can receive satellite navigation signals during use, thereby acquiring the original undecoded GPS / GNSS positioning signal.

[0041] Furthermore, five sets of first clamping blocks 606 are provided. The first clamping blocks 606 are attached to the amplifier circuit filter circuit decoding chip 5, and the second clamping blocks 611 are attached to the amplifier circuit filter circuit decoding chip 5. Through the setting of the first clamping blocks 606, in use, the five sets of first clamping blocks 606 can fix the amplifier circuit filter circuit decoding chip 5 by pressing against the edge of the amplifier circuit filter circuit decoding chip 5. At the same time, the five sets of first clamping blocks 606 can better adapt to the edge contour of the amplifier circuit filter circuit decoding chip 5.

[0042] Furthermore, the first limiting block 607 is disposed inside the first limiting groove 604, the threads at both ends of the second screw 610 are in opposite directions, and the second limiting block 612 is disposed inside the second limiting groove 609. Through the setting of the first limiting groove 604 and the second limiting groove 609, in use, the first limiting groove 604 can restrict the position of the first limiting block 607, thereby preventing the first limiting block 607 from rotating, and the second limiting groove 609 can restrict the position of the second limiting block 612, thereby preventing the second limiting block 612 from rotating.

[0043] Furthermore, the amplifier circuit, filter circuit, and decoding chip 5 includes an amplifier circuit, a filter circuit, a decoding chip, and an MCU control processor. The electronic wire 11 is a low-frequency wire harness. Through the configuration of the amplifier circuit, filter circuit, and decoding chip 5, the amplifier circuit, filter circuit, and decoding chip 5 can process and decode satellite navigation signals during use, thereby obtaining corresponding baseband information such as positioning coordinates.

[0044] Furthermore, the product principle includes the following steps:

[0045] S1: After receiving the satellite navigation signal, the passive GPS / GNSS antenna 3 transmits it to the low-noise amplifier circuit and filter circuit;

[0046] S2: The low-noise amplifier circuit amplifies the satellite navigation signal, and the filter circuit suppresses noise signals outside the frequency of the satellite navigation signal;

[0047] S3: After being amplified and filtered, the satellite navigation signal is transmitted to the vehicle-mounted RTK high-precision or GPS / GNSS navigation decoding chip / module for signal processing and decoding to obtain the corresponding baseband information such as positioning coordinates;

[0048] S4: The decoded positioning coordinates and other baseband information are processed by the MCU controller to control the operation of the LINK / CAN transceiver 8. Then, the decoded positioning coordinates are transmitted to the vehicle multimedia motherboard via the LINK / CAN interface 9 and the low-frequency electronic line 11 through the LINK / CAN transceiver 8.

[0049] The product's output interface only transmits low-frequency decoded baseband information such as positioning coordinates, so it only requires a low-frequency, easy-to-process, and extremely inexpensive ordinary low-frequency connector. The product's output interface to the vehicle multimedia motherboard also only uses a low-frequency, easy-to-process, and extremely inexpensive ordinary low-frequency electronic wiring harness.

[0050] Furthermore, this includes the following steps:

[0051] S1: The amplifier circuit, filter circuit, and vehicle-mounted RTK high-precision or GPS / GNSS navigation decoding module are integrated into the amplifier circuit, filter circuit, and decoding chip 5.

[0052] S2: Remove the RF coaxial cable and RF connector, and replace them with MCU control;

[0053] S3: Transmit and receive via low-cost LINK / CAN electronic wire 11;

[0054] S4: The amplifier circuit, filter circuit, decoding chip 5, LINK / CAN transceiver 8 and LINK / CAN interface 9 are integrated into the same housing to form a main body.

[0055] This invention integrates the vehicle-mounted RTK high-precision or GPS / GNSS satellite navigation passive antenna, amplification circuit, filtering circuit and other radio frequency front-end receiving and processing unit (hereinafter referred to as active antenna) with the RTK high-precision or GPS / GNSS satellite navigation decoding chip / module, MCU, LINK / CAN and other baseband processing units into one unit, all housed in the same casing. The baseband information such as positioning coordinates decoded by the vehicle-mounted RTK high-precision or GPS / GNSS satellite navigation decoding chip / module is controlled by the MCU and then transmitted to the vehicle-mounted multimedia system motherboard through the LINK / CAN transceiver and electronic wiring harness.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated vehicle navigation system via LINK / CAN transmission device, comprising a switch cover (1) and a mounting mechanism (6), characterized in that: A threaded hole (2) is provided on one side of the surface of the top cover (1) of the switch. A passive GPS / GNSS antenna (3) is attached to one side of the surface of the top cover (1). A screw (4) passes through one side of the surface of the threaded hole (2). An amplifier circuit, filter circuit, and decoding chip (5) are connected to one side of the surface of the passive GPS / GNSS antenna (3). An installation mechanism (6) is provided on one side of the surface of the amplifier circuit, filter circuit, and decoding chip (5). A shield (7) is connected to one side of the surface of the installation mechanism (6). A LINK / CAN transceiver (8) is connected to one side of the surface of the shield (7). A LINK / CAN interface (9) is connected to one side of the surface of the shield (7). A lower cover (10) is connected to one side of the surface of the LINK / CAN interface (9). An electronic wire (11) is provided on one side of the surface of the lower cover (10). A wire outlet hole (12) is provided on one side of the surface of the lower cover (10). A connecting block (13) is connected to one side of the surface of the lower cover (10). A threaded groove (14) is provided on one side of the surface of the connecting block (13). The mounting mechanism (6) includes a mounting plate (601), a first rotary key (602), a clamping plate (603), a first limiting groove (604), a first screw (605), a first clamping block (606), a first limiting block (607), a second rotary key (608), a second limiting groove (609), a second screw (610), a second clamping block (611), and a second limiting block (612). The mounting plate (601) is attached to one side of the surface of the amplifier circuit, filter circuit, and decoding chip (5). The first rotary key (602) is mounted on one side of the surface of the mounting plate (601), and the clamping plate (603) is connected to one side of the surface of the mounting plate (601). The first limiting groove (609) is formed inside the mounting plate (601). 4) A first screw (605) is fixedly connected to one side of the surface of the first rotary key (602), a first clamping block (606) is threadedly connected to one side of the surface of the first screw (605), a first limiting block (607) is fixedly connected to one side of the surface of the first clamping block (606), a second rotary key (608) is installed on one side of the surface of the clamping plate (603), a second limiting groove (609) is opened inside the clamping plate (603), a second screw (610) is fixedly connected to one side of the surface of the second rotary key (608), a second clamping block (611) is threadedly connected to one side of the surface of the second screw (610), and a second limiting block (612) is fixedly connected to one side of the surface of the second clamping block (611).

2. The vehicle navigation system integrated via LINK / CAN transmission device according to claim 1, characterized in that: The threaded holes (2) are provided in three sets, and the screws (4) are threadedly connected to the connecting blocks (13) through the threaded grooves (14). The connecting blocks (13) are provided in three sets.

3. The vehicle navigation system integrated via LINK / CAN transmission device according to claim 1, characterized in that: The electronic wire (11) is provided in three sets. The electronic wire (11) passes through the wire outlet (12) and the other end of the electronic wire (11) is connected to the vehicle's main board.

4. The vehicle navigation system integrated via LINK / CAN transmission device according to claim 1, characterized in that: The amplifier circuit, filter circuit, and decoding chip (5) are located between the passive GPS antenna (3) and the mounting plate (601). The LINK / CAN transceiver (8) is electrically connected to the LINK / CAN interface (9). The electronic wires 11 are the LINK / CAN transmission line, the POWER transmission line, and the GND transmission line, respectively.

5. The vehicle navigation system integrated via LINK / CAN transmission device according to claim 1, characterized in that: The passive GPS / GNSS antenna (3) is electrically connected to the amplifier circuit, filter circuit, and decoding chip (5), and the amplifier circuit, filter circuit, and decoding chip (5) is electrically connected to the LINK / CAN transceiver (8).

6. The vehicle navigation system integrated via LINK / CAN transmission device according to claim 1, characterized in that: The first clamp (606) is provided in five sets. The first clamp (606) is attached to the amplifier circuit, filter circuit, and decoding chip (5). The second clamp (611) is attached to the amplifier circuit, filter circuit, and decoding chip (5).

7. The vehicle navigation system integrated via LINK / CAN transmission device according to claim 1, characterized in that: The first limiting block (607) is disposed inside the first limiting groove (604), the threads at both ends of the second screw (610) are opposite, and the second limiting block (612) is disposed inside the second limiting groove (609).

8. The vehicle-mounted RTK high-precision GPS / GNSS navigation antenna and decoding chip and module integrated into one unit for transmission via LINK and CAN as described in claim 1, characterized in that: The amplifier circuit, filter circuit, and decoding chip (5) include an amplifier circuit, a filter circuit, a decoding chip, and an MCU control processor. The electronic wire 11 is a low-frequency wire harness.

9. A vehicle navigation system integrated via LINK / CAN transmission method as described in any one of claims 1-8 above, characterized in that: The method includes the following steps: S1: The passive GPS / GNSS antenna (3) receives satellite navigation signals and transmits them to the low-noise amplifier circuit and filter circuit; S2: The low-noise amplifier circuit amplifies the satellite navigation signal, and the filter circuit suppresses noise signals outside the frequency of the satellite navigation signal; S3: After being amplified and filtered, the satellite navigation signal is transmitted to the vehicle-mounted RTK high-precision or GPS / GNSS navigation decoding chip / module for signal processing and decoding to obtain the corresponding baseband information such as positioning coordinates; S4: The decoded positioning coordinates and other baseband information are processed by the MCU controller to control the operation of the LINK / CAN transceiver (8). Then, the decoded positioning coordinates and other information are transmitted to the vehicle multimedia motherboard through the LINK / CAN interface (9) and the low-frequency electronic line (11) via the LINK / CAN transceiver (8).

10. A vehicle navigation system integrated via LINK / CAN transmission method as described in any one of claims 1-8 above, characterized in that: Includes the following steps: S1: The amplifier circuit, filter circuit and vehicle-mounted RTK high-precision or GPS / GNSS navigation decoding module are integrated into the amplifier circuit filter circuit decoding chip (5); S2: Remove the RF coaxial cable and RF connector, and replace them with MCU control; S3: Transmit and receive via low-cost LINK / CAN electronic wire 11; S4: The amplifier circuit, filter circuit, decoding chip (5), LINK / CAN transceiver (8) and LINK / CAN interface (9) are integrated into the same housing to form a main body.

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