CN212875840U

CN212875840U - Vehicle-mounted router

Info

Publication number: CN212875840U
Application number: CN202021643258.0U
Authority: CN
Inventors: 邢映彪; 高志刚; 胡绍林
Original assignee: Guangzhou Tongda Auto Electric Co Ltd
Current assignee: Guangzhou Tongda Auto Electric Co Ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-04-02
Anticipated expiration: 2030-08-10

Abstract

The embodiment of the application discloses a vehicle-mounted router. According to the technical scheme, the router mainboard and the switch chip are arranged, the processor is mounted on the router mainboard and used for data receiving, transmitting, storing and protocol converting, and the processor is further connected with the WAN interface, the first LAN interfaces, the USB interface and the WiFi antenna. In addition, in the embodiment of the application, the switch chip is connected through any first LAN interface of the router mainboard, and a plurality of second LAN interfaces are arranged through extension of the switch chip. By adopting the technical means, the interfaces of the router can be enriched to be in butt joint with each vehicle-mounted networking device, and the processor is used for carrying out data receiving, sending, storage and protocol conversion, so that the network unified management of each vehicle-mounted networking device is realized, the network management effect of the vehicle-mounted networking device is further optimized, and the potential safety hazard of the network is reduced.

Description

Vehicle-mounted router

Technical Field

The embodiment of the application relates to the technical field of routers, in particular to a vehicle-mounted router.

Background

At present, in a public transport vehicle, a dispatching system, a monitoring system, a driver fatigue driving early warning system, an ADAS system, a 360 system, a blind area reminding system, a vehicle CAN bus monitoring system, an electronic guideboard and other devices are mostly arranged, and the devices are required to be networked to realize corresponding functions.

However, since the suppliers of the devices may be different, when the devices are independently supplied by different manufacturers, the positioning, wireless communication and management operation and maintenance platform may be provided, which easily causes various problems such as function duplication, mutual interference of antennas, management confusion of the SIM card, high traffic cost, and the like. In addition, because each networking device uses an independent internet access outlet, a plurality of internet access outlets easily increase the potential safety hazard of the network.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a vehicle-mounted router which can be used as a bus network convergence center to realize unified network management of various vehicle-mounted networking devices.

The embodiment of the application provides a vehicle-mounted router, which comprises a router mainboard and a switch chip, wherein the router mainboard comprises a processor for data transceiving, storage and protocol conversion; the router mainboard is still including connecting WAN interface, a plurality of first LAN interface, USB interface and the wiFi antenna of treater, the switch chip includes a plurality of second LAN interfaces, the router mainboard is through arbitrary first LAN interface connection the switch chip.

Preferably, the router main board further includes two UART interfaces, and the UART interfaces are connected to the processor.

Preferably, the router main board further includes an IIC interface, and the IIC interface is connected to the processor.

Preferably, the router main board further includes a NAND interface for accessing a computer flash memory device, and the NAND interface is connected to the processor.

Preferably, the USB interface includes a USB2.0 interface and a USB3.0 interface.

Preferably, the router motherboard is an MT7621 motherboard, and the processor is an MIPS dual-core 880MHz processor.

Preferably, the router motherboard further includes a 12V power interface for supplying power to the router motherboard by an external power supply.

Preferably, the router motherboard further includes a 25MHz crystal module.

Preferably, the WiFi antenna is a 5GWiFi antenna and a 2.4GWiFi antenna.

Preferably, the router motherboard further includes an indicator light group, and the indicator light group is used for correspondingly displaying the status of each interface of the router motherboard.

The on-vehicle router that this application embodiment provided is through setting up router mainboard and switch chip to carry on the treater on the router mainboard, be used for data transceiver, storage and protocol conversion, further connect WAN interface, a plurality of first LAN interface, USB interface and wiFi antenna with the treater. In addition, in the embodiment of the application, the switch chip is connected through any first LAN interface of the router mainboard, and a plurality of second LAN interfaces are arranged through extension of the switch chip. By adopting the technical means, the interfaces of the router can be enriched to be in butt joint with each vehicle-mounted networking device, and the processor is used for carrying out data receiving, sending, storage and protocol conversion, so that the network unified management of each vehicle-mounted networking device is realized, the network management effect of the vehicle-mounted networking device is further optimized, and the potential safety hazard of the network is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a vehicle-mounted router provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a voltage output circuit in an embodiment of the present application;

FIG. 3 is a system reset circuit diagram in an embodiment of the present application;

fig. 4 is a circuit diagram of level conversion in the embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present application are shown in the drawings. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that all other embodiments obtained by a person of ordinary skill in the art without any creative work belong to the scope of the present invention. In the embodiments of the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate. Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The application provides a vehicle-mounted router aims at importing and exporting through providing a unified surfing to each networking device on the access bus carries out unified network management to each networking device. Because the suppliers of most of the current vehicle networking equipment may be different, and different suppliers may be configured with independent positioning, wireless communication and operation and maintenance management platforms, various problems such as repeated functions of each networking equipment, mutual interference of antennas, disordered management of the SIM card, continuous rising of flow cost and the like are easily caused.

Example (b):

fig. 1 is a schematic structural diagram of a vehicle-mounted router provided in an embodiment of the present application, and referring to fig. 1, the vehicle-mounted router specifically includes: the router comprises a router mainboard and a switch chip, wherein the router mainboard comprises a processor for data transceiving, storage and protocol conversion; the router mainboard is still including connecting WAN interface, a plurality of first LAN interface, USB interface and the wiFi antenna of treater, the switch chip includes a plurality of second LAN interfaces, the router mainboard is through arbitrary first LAN interface connection the switch chip.

Through providing interfaces such as WAN interface, first LAN interface and USB interface to richen the interface of this application embodiment vehicle router, make all kinds of vehicle networking equipment all can be through the vehicle router of above-mentioned interface connection, and then carry out unified network management through vehicle router. The router mainboard is connected with the WAN interface, the first LAN interface and the USB interface through the processor, the interfaces are connected with vehicle-mounted networking equipment such as a dispatching system, a monitoring system, a driver fatigue driving early warning system, an ADAS system, a 360 system, a blind area reminding system, a vehicle CAN bus monitoring system, an electronic guideboard and the like, the processor is used for receiving, transmitting and storing network data and converting protocols, and therefore the vehicle-mounted networking equipment CAN interact with a corresponding management platform through a uniform internet access outlet provided by the router, and corresponding functions are achieved. The WiFi antenna is used for providing a communication link between the vehicle-mounted router and the management platform of each vehicle-mounted networking device, so that the router can receive and transmit data through the WiFi antenna. In addition, since the number of the vehicle-mounted networking devices that the vehicle-mounted router needs to access may be a lot, in the embodiments of the present application, a switch chip is provided, and the switch chip is also provided with a plurality of LAN interfaces, which are defined as the second LAN interfaces. The switch is connected with the router mainboard through the first LAN interface of the router mainboard, so that the vehicle-mounted router expands the corresponding number of Ethernet interfaces on the basis of a plurality of interfaces provided by the original mainboard, and the condition that more vehicle-mounted networking equipment is accessed to the vehicle-mounted router is met.

Specifically, as shown in fig. 1, the router motherboard is an MT7621 motherboard, and the processor is an MIPS dual-core 880MHz processor. The MT7621 mainboard is a high-performance router mainboard and is provided with an MIPS dual-core 880MHz processor, so that the data processing rate of the router can be guaranteed, the performance of the router is further improved, and the mobile router is suitable for the vehicle-mounted router in the embodiment of the application.

It should be noted that, according to the actual access requirement of the networking device, the router motherboard may be provided with a corresponding number of WAN interfaces and first LAN interfaces. As shown in fig. 1, in the embodiment of the present application, the number of WAN interfaces of the router motherboard is 1, and the WAN interfaces have an adaptive MDI/MDIX characteristic and are built in with a 1.5KV electromagnetic isolation protection circuit. The number of the first LAN interfaces is four, the first LAN interfaces also have the characteristics of self-adaptive MDI/MDIX, and a 1.5KV electromagnetic isolation protection circuit is arranged in the first LAN interfaces. On the other hand, according to the expansion requirement of the ethernet interface, a corresponding number of switch chips can be adaptively connected to the first LAN interface of the router motherboard, and the number of the second LAN interfaces on the switch chips is also set according to the actual requirement. In the embodiment of the application, the switch chip is connected to one first LAN interface of the router main board, and five second LAN interfaces are included in the switch chip to realize the extension of the 5-way ethernet interface.

Preferably, as shown in fig. 1, the router motherboard further includes two UART interfaces, and the UART interfaces are connected to the processor. The UART0 interface is used for connecting a DEBUG module and debugging the vehicle-mounted router. The UART1 interface is used for being externally connected with a GPS module to realize the positioning function of the vehicle-mounted router. It should be noted that the vehicle-mounted router carries out real-time positioning through an external GPS module, and the positioning information of each vehicle-mounted networking device is suspicious and unified, so that the situation that the positioning data is disordered and inconsistent when each vehicle-mounted networking device independently collects the positioning information for positioning is avoided.

Preferably, the router main board further includes an IIC interface, and the IIC interface is connected to the processor. The IIC interface is used for being connected with an RTC clock chip, the RTC clock chip can provide accurate real-time or provide accurate time reference for the vehicle-mounted router system, and the RTC clock chip can adopt a crystal oscillator with high accuracy as a clock source.

Preferably, the router main board further includes a NAND interface for accessing a computer flash memory device, and the NAND interface is connected to the processor. Computer flash memory devices are a non-volatile storage technology that can retain data even after power is removed. The memory can reduce the storage cost of each bit and improve the storage capacity, is a product with lower power consumption, lighter weight and better performance, and is particularly obvious in low-capacity application not exceeding 4 GB.

Preferably, the USB interface includes a USB2.0 interface and a USB3.0 interface. The USB3.0 is used for butting the 4G/5G communication module to realize various wireless communication modes of the vehicle-mounted router. The USB2.0 interface may be expanded to connect with multiple USB interfaces, such as "USB 0", "USB 1", "USB 2", and "USB 3" interfaces shown in fig. 1, where the "USB 1" interface may be externally connected to an SD card for data storage. "USB 2" can be connected with EMMC memory chip for data storage.

Preferably, the router motherboard further includes a 12V power interface for supplying power to the router motherboard by an external power supply. The 12V power interface adopts a 4-core terminal power socket, and power inversion protection is built in the power socket. Specifically, referring to fig. 2, a schematic diagram of a voltage output circuit according to an embodiment of the present application is provided, and an MP4575 power management chip is used for power output management according to the embodiment of the present application. As shown in fig. 2, the MP4575 power management chip has a wide input voltage range (4.5V-55V), a strong loading capability, and an output current of 5A, which meets the power requirement of the vehicle-mounted router in the embodiment of the present application.

Preferably, the router motherboard further includes a 25MHz crystal oscillator module, and the 25MHz crystal oscillator module is connected to the PHY chip on the motherboard. The 25MHz crystal oscillator module can generate highly stable signals and is suitable for the vehicle-mounted router of the embodiment of the application.

Preferably, the WiFi antenna is a 5GWiFi antenna and a 2.4GWiFi antenna. By providing the WiFi antennas with different frequency bands, data signals with different frequency requirements can be received and transmitted. And, through providing the wiFi antenna of different frequency channels, also avoid the same frequency interference between the antennable.

Preferably, the router motherboard further includes an indicator light group, and the indicator light group is used for correspondingly displaying the status of each interface of the router motherboard. This pilot lamp group is all set up in positions such as WAN interface, LAN interface to this application embodiment, and the pilot lamp group includes a plurality of pilot lamp, and each pilot lamp is used for showing the status information that corresponds the interface.

In addition, referring to fig. 1, in the embodiment of the present application, a Reset button is provided on the router motherboard, and by using this button, the parameter configuration of the in-vehicle router can be restored to the factory value. Specifically, referring to fig. 3, a system reset circuit diagram of the vehicle-mounted router according to the embodiment of the present application is provided, where the system reset circuit is active low. The circuit prevents to reset through setting up TVS pipe and disturb to increase 0.1 uF's electric capacity near reset pin one end, prevent the condition that the system automatic re-sets from appearing in the electrostatic interference time.

On the other hand, referring to fig. 4, according to the level conversion circuit diagram of the router motherboard of the embodiment of the present application, level conversion of the router motherboard is implemented by the level conversion circuit. Because the level of some pins of the vehicle-mounted router is different, the level of partial pins is 1.8V. The IO level at one end of the router motherboard is 3.3V, so that a level conversion circuit needs to be added.

More specifically, referring to fig. 1, the router motherboard further includes a watchdog module (WDT), a clock module (clock), a serial flash memory (spi-flash), and a random access memory (DRAM). Among them, a serial flash memory (spi-flash) and a random access memory (DRAM) are used for storage of corresponding data.

In the above, by setting the router main board and the switch chip, and by mounting the processor on the router main board for data transceiving, storage, and protocol conversion, the processor is further connected to the WAN interface, the plurality of first LAN interfaces, the USB interface, and the WiFi antenna. In addition, in the embodiment of the application, the switch chip is connected through any first LAN interface of the router mainboard, and a plurality of second LAN interfaces are arranged through extension of the switch chip. By adopting the technical means, the interfaces of the router can be enriched to be in butt joint with each vehicle-mounted networking device, and the processor is used for carrying out data receiving, sending, storage and protocol conversion, so that the network unified management of each vehicle-mounted networking device is realized, the network management effect of the vehicle-mounted networking device is further optimized, and the potential safety hazard of the network is reduced.

The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. The present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. An in-vehicle router, comprising: the router comprises a router mainboard and a switch chip, wherein the router mainboard comprises a processor and is used for data receiving, transmitting, storing and protocol converting; the router mainboard is still including connecting WAN interface, a plurality of first LAN interface, USB interface and the wiFi antenna of treater, the switch chip includes a plurality of second LAN interfaces, the router mainboard is through arbitrary first LAN interface connection the switch chip.

2. The vehicle-mounted router of claim 1, wherein the router motherboard further comprises two UART interfaces, and the UART interfaces are connected to the processor.

3. The in-vehicle router of claim 1, wherein the router motherboard further comprises an IIC interface, the IIC interface coupled to the processor.

4. The vehicle mounted router of claim 1, wherein the router motherboard further comprises a NAND interface for accessing a computer flash memory device, the NAND interface being connected to the processor.

5. The in-vehicle router of claim 1, wherein the USB interface comprises a USB2.0 interface and a USB3.0 interface.

6. The vehicle router of claim 1, wherein the router motherboard is an MT7621 motherboard and the processor is an MIPS dual-core 880MHz processor.

7. The vehicle-mounted router of claim 1, wherein the router motherboard further comprises a 12V power interface for providing power to the router motherboard from an external power source.

8. The in-vehicle router of claim 1, wherein the router motherboard further comprises a 25MHz crystal module.

9. The on-board router of claim 1, wherein the WiFi antenna is a 5GWiFi antenna and a 2.4GWiFi antenna.

10. The vehicle-mounted router of claim 1, wherein the router motherboard further comprises an indicator light set, and the indicator light set is used for correspondingly displaying the status of each interface of the router motherboard.