CN212367535U

CN212367535U - Opencpu-based T-BOX system

Info

Publication number: CN212367535U
Application number: CN202021000140.6U
Authority: CN
Inventors: 蒙天地; 于尧; 李宽; 马宁; 王子军
Original assignee: FAW Bestune Car Co Ltd
Current assignee: FAW Bestune Car Co Ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-01-15
Anticipated expiration: 2030-06-04

Abstract

The utility model belongs to the technical field of the car networking, specific T-BOX system of opencpu that says so. The system comprises a WIFI module, a single chip microcomputer, a processor, an accelerometer, a gyroscope and an SIM card; the ECSPI serial port of the processor is connected with the ECSPI serial port of the single chip microcomputer; the CAN serial port of the processor is connected with the CAN serial port of the singlechip; the UART serial port of the processor is connected with the UART serial port of the singlechip; the accelerometer is connected with the gyroscope and a GPIO serial port of the singlechip; the SIM card is connected with a USB OTG2 serial port of the processor; and the WIFI module is connected with a SDIO1 serial port of the processor. The utility model relates to a simple structure's opencpu's T-BOX system, this system adopt AG35-CEN worker rule level communication module, have integrated four modules of SOC, 4G module, DDR, GNSS, reach the purpose that reduces the cost.

Description

Opencpu-based T-BOX system

Technical Field

The utility model belongs to the technical field of the car networking, specific T-BOX system of opencpu that says so.

Background

The vehicle networking system consists of three parts, namely an end, a pipe and a cloud, wherein the end is a vehicle-mounted terminal (T-BOX) and is mainly responsible for collecting and reporting vehicle information, routing of vehicle internal and external information interaction and providing a network for vehicles; the 'pipe' is a transmission network, namely, fusion communication, and is a medium for ensuring interconnection and intercommunication between the vehicle and the outside; the cloud is a cloud platform used for terminal access, vehicle management and application program release, and comprises a private cloud and a public cloud.

The traditional T-BOX system roughly comprises ten parts, namely a 4G module, a WIFI module, an MCU (single chip microcomputer), an SOC (processor), a GNSS module, a Gsense chip (accelerometer and gyroscope), a power management module, an SIM card, an eMMC and a DDR (memory), wherein the SOC and the MCU are taken as the main parts, and the SOC and the MCU are connected with each other through serial ports such as a UART (universal asynchronous receiver transmitter), an ECSP (electronically commutated secure processor) and the like. The conventional T-BOX architecture scheme generally adopts a 4G module (e.g., MU909S), an NXP SOC (e.g., imx6), an ublox NEO-M8L module, and a network and application processing unit with a single memory chip constituting a core, as shown in fig. 1, the conventional T-BOX architecture.

Under the framework, the MCU is responsible for collecting data in the vehicle and issuing a remote control command of the cloud platform, and simultaneously, the functions of related CAN network management operation, abnormal awakening detection and the like are completed; calling units such as a 4G module, a GNSS module and the like by the SOC to realize all functions of an application layer, including providing contents such as a 4G network, a WIFI function, navigation and positioning and the like; meanwhile, when the situation that eMMC power supply is unstable due to pin conductivity of an imx6 chip needs to be closed in the sleeping process, a communication channel between the MCU and the SOC CAN be closed and cannot be opened accidentally, and the T-BOX cannot be in sleeping, software logic needs to be added additionally, and when a CAN wake-up message is received, the on-off state of the communication channel between the MCU and the SOC is judged, so that the channel CAN be opened, and the normal work and sleeping of the whole T-BOX are not influenced. Considering from the complexity and cost of the hardware design scheme and the complexity and logic of the software design scheme, the integrated opencpu scheme which is more reliable and simpler and has low cost is designed, and the hardware cost can be reduced by about 15 yuan.

Disclosure of Invention

The utility model provides a simple structure's opencpu's T-BOX system, this system adopt AG35-CEN worker rule level communication module, have integrated four modules of SOC, 4G module, DDR, GNSS, reach the purpose that reduces the cost, have solved the above-mentioned not enough that current T-BOX system exists.

The technical scheme of the utility model is explained as follows with the attached drawings:

a T-BOX system based on opencpu comprises a WIFI module 1, a single chip microcomputer 2, a processor 3, an accelerometer and gyroscope 4 and an SIM card 5; the ECSPI serial port of the processor 3 is connected with the ECSPI serial port of the singlechip 2; the CAN serial port of the processor 3 is connected with the CAN serial port of the singlechip 2; the UART serial port of the processor 3 is connected with the UART serial port of the singlechip 2; the accelerometer and the gyroscope 4 are connected with a GPIO serial port of the singlechip 2; the SIM card 5 is connected with a USB OTG2 serial port of the processor 3; and the WIFI module 1 is connected with a SDIO1 serial port of the processor 3.

The model of the singlechip 2 is SAK-TC23.

The processor 3 is AG 35-CEN.

The utility model discloses simple structure, MCU's processing content is unchangeable, still accomplishes sending of the collection of in-vehicle data and cloud platform remote control instruction to and accomplish CAN network management and abnormal movement and detect the function. The integrated AG35-CEN module, the externally hung WLAN module and the SIM are internally provided with the functions of the 4G network, the GPS data acquisition and the transparent transmission and other related functions of the application layer.

Drawings

FIG. 1 is a schematic structural diagram of a conventional T-BOX system;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic diagram of a vehicle system architecture.

In the figure: 1. a WIFI module; 2. a single chip microcomputer; 3. a processor; 4. an accelerometer and a gyroscope; 5. and a SIM card.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 2, the T-BOX system based on opencpu comprises a WIFI module 1, a single chip microcomputer 2, a processor 3, an accelerometer and gyroscope 4, and an SIM card 5; the ECSPI serial port of the processor 3 is connected with the ECSPI serial port of the singlechip 2; the CAN serial port of the processor 3 is connected with the CAN serial port of the singlechip 2; the UART serial port of the processor 3 is connected with the UART serial port of the singlechip 2; the accelerometer and the gyroscope 4 are connected with a GPIO serial port of the singlechip 2; the SIM card 5 is connected with a USB OTG2 serial port of the processor 3; and the WIFI module 1 is connected with a SDIO1 serial port of the processor 3.

The model of the singlechip 2 is SAK-TC23.

The processor 3 is AG 35-CEN.

Referring to fig. 3, the T-BOX itself is connected to the 4G and GPS antennas through shielded wires to obtain amplified and simply processed effective 4G and GPS signals; the T-BOX is communicated with the sound host through an Ethernet or a USB line, and transmits 4G, GPS data, WIFI and other states and data streams; the T-BOX communicates with the gateway through the Ethernet or the CAN, the gateway CAN send vehicle condition data in the whole vehicle, such as vehicle speed, vehicle door state, vehicle window state, engine state and the like to the T-BOX, the MCU in the T-BOX carries out data processing and completes functions of related network management, diagnosis and the like, the related functions are realized by matching with the whole vehicle, the SOC in the T-BOX CAN obtain the vehicle condition data from the MCU, the 4G network is connected with the cloud platform, the data are sent to the cloud platform and are pushed to a user mobile phone APP through the cloud platform, and the vehicle condition is displayed. When a user operates a remote control function, a mobile phone APP triggers a command and transmits the command to the cloud platform, the cloud platform sends the command to the T-BOX through vehicle condition judgment, the T-BOX sends the command to the in-vehicle network through the gateway, and each controller responds to the corresponding command to realize remote vehicle control.

From the hardware perspective, the AG35-CEN module can completely replace the MU909S module in terms of size, operating frequency band, supportable operating system, electrical performance, and the like, and is richer in the number of interfaces, and can adapt to various hardware schemes, specifically see table 1.

TABLE 1 comparison of hardware characteristics of modules

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. A T-BOX system based on opencpu is characterized by comprising a WIFI module (1), a single chip microcomputer (2), a processor (3), an accelerometer and gyroscope (4) and an SIM card (5); the ECSPI serial port of the processor (3) is connected with the ECSPI serial port of the singlechip (2); the CAN serial port of the processor (3) is connected with the CAN serial port of the singlechip (2); the UART serial port of the processor (3) is connected with the UART serial port of the singlechip (2); the accelerometer and the gyroscope (4) are connected with a GPIO serial port of the singlechip (2); the SIM card (5) is connected with a USB OTG2 serial port of the processor (3); and the WIFI module (1) is in serial connection with the SDIO1 of the processor (3).

2. The opencpu-based T-BOX system as claimed in claim 1, wherein the single chip microcomputer (2) is of the type SAK-TC23.

3. The opencpu-based T-BOX system as claimed in claim 1, wherein said processor (3) is of the AG35-CEN type.