CN218567614U

CN218567614U - High-precision GPS signal system for realizing sharing of android and V2X systems

Info

Publication number: CN218567614U
Application number: CN202222126259.3U
Authority: CN
Inventors: 莫艺宇; 裴智; 黄骏
Original assignee: Shenzhen Xincancan Technology Co ltd
Current assignee: Shenzhen Xincancan Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-03-03
Anticipated expiration: 2032-08-12

Abstract

The utility model relates to an tall and erect and V2X system sharing high accuracy GPS signal system of ann, including tall and erect system main chip of ann, external high accuracy GPS module, V2X module, LCD display, power module. According to the android and V2X system shared high-precision GPS signal system, an android system main chip, an externally-hung high-precision GPS module and a V2X module are connected through a serial interface, so that the android and V2X system shared high-precision GPS signal system is realized, and the effects of reducing cost and being convenient to install are achieved.

Description

High-precision GPS signal system for realizing sharing of android and V2X systems

Technical Field

The utility model relates to a car networking technical field, concretely relates to tall and erect and high-accuracy GPS signal system of V2X system sharing of ann.

Background

The existing V2X and android systems need to realize high-precision GPS positioning and time synchronization functions, and all need to add a high-precision GPS chip or module, one product has android and V2X systems to exist simultaneously, and two high-precision GPS modules and two GPS antennas are needed, so that the product manufactured according to the scheme has high cost and is inconvenient to install.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a high-precision GPS signal system shared by android and V2X systems, which realizes high-precision GPS positioning and time synchronization functions, reduces product cost, and is convenient to install.

A high-precision GPS signal system shared by android and V2X systems comprises an android system main chip, a plug-in high-precision GPS module, a V2X module, an LCD display and a power supply module.

Further, the main chip of the android system comprises a serial interface UART, an LCD interface, a USB interface and a general purpose interface GPIO, wherein the serial interface UART is connected with a serial interface of an external high-precision GPS module to realize serial communication and receive NMEA (National mine Electronics Association, the same below) data output by the serial interface of the high-precision GPS module, the main chip of the android system integrates RTK module communication and Ntrip differential function, and the external high-precision GPS module enters an RTK mode and continuously outputs high-precision NMEA data by configuring the serial interface and an Ntrip account number to realize the function of the android high-precision GPS positioning system. The LCD display interface is connected with the LCD display to display system related information, the USB interface and the general purpose interface GPIO are connected with the V2X module, the main chip of the android system is used as a main device, the V2X module is used as a slave device, and the main chip of the android system realizes communication and control of the V2X module through the USB interface and the general purpose interface GPIO.

Furthermore, the plug-in high-precision GPS module comprises a high-precision GPS chip, a GPS antenna, a radio frequency input circuit and a level conversion circuit, wherein the GPS antenna is connected to the input end of the radio frequency input circuit, the output of the radio frequency input circuit is connected with the input end of the high-precision GPS chip, a GPS signal received by the GPS antenna is sent to the high-precision GPS chip through the radio frequency input circuit to be processed to obtain NMEA data, the NMEA data is output through a serial interface, the radio frequency input circuit is used for impedance matching and filtering of the GPS antenna, and the level conversion circuit is used for signal level conversion.

Furthermore, the android system main chip, the plug-in high-precision GPS module and the V2X module are connected through a serial interface, NMEA data output by the plug-in high-precision GPS module through the serial interface is transmitted to the android system main chip and the V2X module, and sharing of the same high-precision GPS signal system by an android system and the V2X system is achieved.

The V2X module is connected with the V2X main antenna and the V2X auxiliary antenna, so that V2X traffic early warning is realized, NMEA data and 1PPS signals output by a high-precision GPS module serial interface are received and analyzed, and a sub-meter V2X positioning system is realized.

Tall and erect and V2X system sharing high accuracy GPS signal system of ann adopts the power supply of car battery, and car battery output voltage connects power module, power module output different voltage provides the stable power supply that normal work needs for each unit module, for tall and erect and each unit module power supply of V2X system sharing high accuracy GPS signal system.

The high-precision GPS signal system shared by the android and V2X systems reduces one plug-in high-precision GPS module and one GPS antenna, reduces the cost of the whole system product, simplifies the installation work of the GPS antenna and improves the working efficiency.

Drawings

Fig. 1 is a schematic block diagram of a high-precision GPS signal system shared by android and V2X systems according to an embodiment of the present invention;

fig. 2 is a schematic diagram 1 of a USB interface of a V2X module in an embodiment of the present invention;

fig. 3 is a schematic diagram of a USB interface of a V2X module according to an embodiment of the present invention 2;

fig. 4 is a schematic diagram 3 of a USB interface of a V2X module according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a level conversion part of a high-precision GPS module according to an embodiment of the present invention 1;

fig. 6 is a schematic diagram of a level conversion part of a high-precision GPS module according to an embodiment of the present invention 2;

FIG. 7 is a wiring diagram of the high-precision GPS module according to the embodiment of the present invention;

fig. 8 is a schematic diagram of a GPS chip of a high-precision GPS module according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a voltage-stabilized power supply portion of a high-precision GPS module according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a part of a radio frequency input circuit of a high-precision GPS module according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a V2X module cryptographic chip according to an embodiment of the present invention 1;

fig. 12 is a schematic diagram of a V2X module cryptographic chip according to an embodiment of the present invention;

fig. 13 is a schematic diagram of a V2X module cryptographic chip according to an embodiment of the present invention 3;

fig. 14 is a schematic diagram of a USB interface of a main chip of an android system according to an embodiment of the present invention.

In the figure: 1. the system comprises a main chip of an android system, 2 a plug-in high-precision GPS module, 3 and V2X modules, 4 an LCD display, 5 a power supply module.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and drawings.

Please refer to fig. 1-14, which illustrate a high-precision GPS signal system shared by an android and a V2X system provided by an embodiment of the present invention, which includes an android system main chip 1, an external high-precision GPS module 2, a V2X module 3, an LCD display 4, and a power module 5.

Specifically, the main chip 1 of the android system comprises a serial interface UART, an LCD interface, a USB interface and a general purpose interface GPIO, wherein the serial interface UART is connected with a serial interface of a plug-in high-precision GPS module 2 to realize serial interface communication and receive and analyze NMEA data output by the serial interface of the high-precision GPS module 2, the main chip 1 of the android system integrates RTK module communication and Ntrip differential functions, and the plug-in high-precision GPS module 3 can enter an RTK mode and continuously output the high-precision NMEA data through configuration of the serial interface UART and an Ntrip account number to realize the function of the android high-precision GPS positioning system. The LCD display interface is connected with the LCD display 4 to display system related information, the USB interface and the general purpose interface GPIO are connected with the V2X module 3, the android system main chip 1 serves as a main device, the V2X module 3 serves as a slave device, and the android system main chip realizes communication and control of the V2X module through the USB interface and the general purpose interface GPIO.

Furthermore, the plug-in high-precision GPS module 2 comprises a high-precision GPS chip, a GPS antenna, a radio frequency input circuit and a level conversion circuit, wherein the GPS antenna is connected to the input end of the radio frequency input circuit, the output of the radio frequency input circuit is connected with the input end of the high-precision GPS chip, a GPS signal received by the GPS antenna is sent to the high-precision GPS chip through the radio frequency input circuit to be processed to obtain NMEA data, the NMEA data is output through a serial interface, the radio frequency input circuit is used for impedance matching and filtering of the GPS antenna, and the level conversion circuit is used for signal level conversion.

Furthermore, the android system main chip 1, the plug-in high-precision GPS module 2 and the V2X module 3 are connected through a serial interface, NMEA data output by the plug-in high-precision GPS module 2 through the serial interface is transmitted to the android main chip 1 and the V2X module 3, and sharing of the same high-precision GPS signal system by an android system and the V2X system is achieved.

Further, the V2X module 3 is connected to the V2X main antenna and the V2X auxiliary antenna to implement V2X traffic warning, and receives and analyzes NMEA data and 1PPS signals output by the serial interface of the plug-in high-precision GPS module 2 to implement a sub-meter V2X positioning system.

Tall and erect and V2X system sharing high accuracy GPS signal system adopts the car battery power supply, and car battery output voltage receives power module 5, power module 5 converts car battery voltage into different output voltage, provides the steady power that normal work needs for each unit module, for tall and erect and V2X system sharing high accuracy GPS signal system each unit module power supply.

In the embodiment, the android and V2X systems share the high-precision GPS signal system, so that one plug-in high-precision GPS module and one GPS antenna are reduced, the product cost of the whole system is reduced, the installation work of the GPS antenna is simplified, and the working efficiency is improved.

It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the spirit of the present invention, and all the changes made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a tall and erect and V2X system sharing high accuracy GPS signal system which characterized in that, includes tall and erect system main chip of ann, external high accuracy GPS module, V2X module, LCD display, power module, external high accuracy GPS module passes through serial interface UART and is connected with tall and erect system main chip, V2X module respectively, and power module provides stable working power for each module.

2. The android and V2X system sharing high-precision GPS signal system of claim 1, wherein the android system main chip comprises the serial interface UART, an LCD display interface, a USB interface, and a general purpose interface GPIO, the serial interface UART is connected with a serial interface of a plug-in high-precision GPS module to realize serial communication, receive NMEA data output by a serial port of the high-precision GPS module, and realize the android high-precision GPS positioning system function.

3. The android and V2X system shared high-precision GPS signal system of claim 2, wherein the plug-in high-precision GPS module comprises a high-precision GPS chip, a GPS antenna, a radio frequency input circuit, and a level conversion circuit, the GPS antenna is connected to the radio frequency input circuit, the output of the radio frequency input circuit is connected with the input end of the high-precision GPS chip, the GPS signal received by the GPS antenna is sent to the high-precision GPS chip through the radio frequency input circuit to be processed to obtain NMEA data, the NMEA data is output through a serial interface, the radio frequency input circuit is used for GPS antenna impedance matching and filtering, and the level conversion circuit is used for signal level conversion.

4. The android and V2X system shared high-precision GPS signal system of claim 2, wherein the USB interface and the general purpose interface GPIO are connected with a V2X module, the main chip of the android system is used as a main device, the V2X module is used as a slave device, and the main chip of the android system realizes communication and control of the V2X module through the USB interface and the general purpose interface GPIO.

5. The android and V2X systems sharing high precision GPS signal system of claim 2, wherein the LCD display interface is connected to an LCD display, displaying system related information.

6. The android and V2X systems sharing high accuracy GPS signal system of claim 2, wherein the V2X module receives NMEA data and 1PPS signal analysis output by the high accuracy GPS module serial interface to form a sub-meter V2X positioning system.

7. The high-precision GPS system shared by android and V2X systems of claim 2, wherein the power module comprises a DC-DC power conversion unit and an LDO unit, and the input battery voltage is converted into different output voltages, so as to provide stable working power for each unit module of the high-precision GPS system shared by android and V2X systems.