Vehicle-mounted central computing system and method

Abstract

The invention discloses a vehicle-mounted central computing system and method. The system comprises a main control chip, a secondary control module, a camera input module, a multimedia input module and a communication module, the main control chip receives module signals input by other modules, and provides function control of different functional domains of the vehicle through software virtualization according to the module signals; the secondary control module manages an internal power supply of the system and processes and transmits external signals of the system; the camera input module receives a shooting picture signal input by the camera, decodes the shooting picture signal, obtains a picture decoding signal and transmits the picture decoding signal to the main control chip; the multimedia module is used for inputting and outputting multimedia signals; and the communication module is used for inputting and outputting Ethernet signals and wireless signals so as to support an Ethernet service-oriented architecture (SOA) of the whole vehicle. According to the invention, chips under multiple functional domains are fused to the vehicle-mounted central computing system, so that the hardware cost of the controller is reduced, the signal transmission delay is reduced, and the development efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of automotive technology, and in particular to a vehicle-mounted central computing system and method. Background Art

[0002] With the continuous development of automotive technology, especially the increasing complexity of electronic and electrical systems, the division of multiple on-board domain controllers has become an inevitable trend. This is mainly related to the limitations of traditional distributed architecture and the advantages brought by domain controller division.

[0003] Currently, in-vehicle domain controller systems are divided into multiple domain controllers, including cockpit domain, intelligent driving domain, and control domain. Data exchange between multiple domain controllers is complex and has high latency, and multiple domain controllers are also costly. Summary of the Invention

[0004] The present invention provides a vehicle-mounted central computing system and method for realizing central control of multiple functional domains through a main control chip.

[0005] According to a first aspect of the present invention, there is provided an in-vehicle central computing system, comprising: a main control chip, a secondary control module, a camera input module, a multimedia input module, and a communication module, wherein the main control chip is connected to the secondary control module, the camera input module, the multimedia input module, and the communication module, respectively;

[0006] The main control chip is used to receive module signals input by other modules and provide functional control of different functional domains of the vehicle through software virtualization based on the module signals;

[0007] The secondary control module is used to manage the power supply inside the system and process and transmit external signals of the system;

[0008] The camera input module is used to receive the shooting picture signal input by the camera, decode the shooting picture signal, obtain the picture decoding signal and transmit it to the main control chip;

[0009] The multimedia module is used for inputting and outputting multimedia signals;

[0010] The communication module is used for input and output of Ethernet signals and wireless signals to support the vehicle Ethernet SOA architecture.

[0011] According to a second aspect of the present invention, there is provided an on-vehicle central computing method, which is applied to the on-vehicle central computing system mentioned in any one of the embodiments of the present invention. The on-vehicle central computing system includes a main control chip, a secondary control module, a camera input module, a multimedia input module, and a communication module. The main control chip is connected to the secondary control module, the camera input module, the multimedia input module, and the communication module, respectively. The method includes:

[0012] Receive module signals input from other modules through the main control chip, and provide functional control of different functional domains of the vehicle through software virtualization according to the module signals;

[0013] Management of the system's internal power supply and processing and transmission of the system's external signals through the secondary control module;

[0014] The camera input module receives the shooting picture signal input by the camera, decodes the shooting picture signal, obtains a picture decoding signal and transmits it to the main control chip;

[0015] Input and output multimedia signals through the multimedia module;

[0016] The communication module inputs and outputs Ethernet signals and wireless signals to support the service-oriented architecture (SOA) of vehicle Ethernet.

[0017] The technical solution of an embodiment of the present invention is that the vehicle-mounted central computing system includes: a main control chip, a secondary control module, a camera input module, a multimedia input module, and a communication module. The main control chip is connected to the secondary control module, camera input module, multimedia input module, and communication module respectively. The main control chip is used to receive module signals input by other modules and provide functional control of different functional domains of the vehicle through software virtualization based on the module signals. The secondary control module is responsible for managing the system's internal power supply and processing and transmitting external system signals. The camera input module is used to receive and decode the captured image signal input by the camera, obtain the image decoding signal, and transmit it to the main control chip. The multimedia module is used for input and output of multimedia signals. The communication module is used for input and output of Ethernet and wireless signals to support the vehicle Ethernet service-oriented architecture (SOA). By integrating the chips of the multi-functional domain into the vehicle-mounted central computing system, the controller hardware cost is reduced, the signal transmission delay is reduced, and the development efficiency is improved.

[0018] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a vehicle-mounted central computing system provided according to the first embodiment of the present invention;

[0021] Figure 2 is another structural diagram of an on-vehicle central computing system provided according to the first embodiment of the present invention;

[0022] Figure 3 This is a flow chart of a vehicle-mounted central computing method provided according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] Example 1

[0026] Figure 1 This is a structural diagram of a vehicle-mounted central computing system provided by the first embodiment of the present invention. Figure 1As shown, the system includes: a main control chip 1, a secondary control module 2, a camera input module 3, a multimedia input module 4 and a communication module 5, and the main control chip 1 is connected to the secondary control module 2, the camera input module 3, the multimedia input module 4 and the communication module respectively.

[0027] The main control chip 1 is used to receive module signals input by other modules, and provide functional control of different functional domains of the vehicle through software virtualization according to the module signals; the secondary control module is used to manage the internal power supply of the system and process and transmit external signals of the system; the camera input module 3 is used to receive the shooting picture signal input by the camera, and decode the shooting picture signal to obtain the picture decoding signal and transmit it to the main control chip 1; the multimedia module is used for the input and output of multimedia signals; the communication module is used for the input and output of Ethernet signals and wireless signals to support the vehicle Ethernet SOA architecture.

[0028] In this embodiment, the main control chip 1 can be understood as a chip that primarily performs functional control, such as a system-on-chip (SoC). Other modules can be understood as all modules in the vehicle's central computing system except the main control chip 1. Module signals can be understood as signals sent by other modules to the main control chip 1. The secondary control module 2 can be understood as a module composed of secondary control chips and other modules that implements other functions. The functional domain can be understood as the architecture of the vehicle divided according to function, such as the intelligent driving domain, the cockpit domain, and the control domain. The system internal power supply can be understood as the power supply that powers the system. The system external signal can be understood as a signal from other sources in the vehicle other than the system. The camera input module 3 can be understood as a module that performs processing operations such as decoding signals transmitted by the camera. The captured image signal can be understood as the captured image signal transmitted by the camera, such as the image signal captured by the front-view camera, rear-view camera, and surround-view camera in the vehicle. Multimedia signals can include audio and video signal lights. The Ethernet signal can be understood as a signal transmitted via the Ethernet transmission protocol. The vehicle service-oriented architecture (SOA) can be understood as a software design pattern that breaks down the different functional units of vehicle applications and connects them through well-defined interfaces and protocols. The communication module can be understood as a module that provides bidirectional transmission of Ethernet wired and wireless signals with the main control chip 1.

[0029] Specifically, the main control chip 1 includes computing modules such as a CPU, GPU, and NPU. It also features a built-in functional safety island to ensure the safety requirements of autonomous driving functions. Software virtualization enables shared computing power and memory allocation, enabling the main control chip 1 to control functional domains such as the intelligent driving domain and the cockpit domain. The secondary control module manages the system's internal power supply and processes and transmits external signals through the secondary control chip. The camera input module 3 can be equipped with multiple decoding chips, each capable of supporting multiple camera inputs. For example, the camera input module 3 includes three video derializer decoding chips, each capable of supporting four 3-megapixel camera inputs, for a maximum of 12 camera inputs, supporting 11V5R vision-based autonomous driving solutions. The camera input module 3 receives and decodes the camera's image signal, generating a decoded image signal that is then transmitted to the main control chip 1. The multimedia module provides audio and video input and output interfaces to facilitate the input and output of multimedia signals. An Ethernet channel is established between the main control chip 1 and other controllers in the vehicle through the communication module to realize data transmission between the main control chip 1 and other controllers in the form of Ethernet signals. The input and output of wireless signals can also be realized through the wireless transmission channel in the communication module to support the realization of SOA of the entire vehicle.

[0030] The technical solution of an embodiment of the present invention is that the vehicle-mounted central computing system includes: a main control chip, a secondary control module, a camera input module, a multimedia input module, and a communication module. The main control chip is connected to the secondary control module, camera input module, multimedia input module, and communication module respectively. The main control chip is used to receive module signals input by other modules and provide functional control of different functional domains of the vehicle through software virtualization based on the module signals. The secondary control module is responsible for managing the system's internal power supply and processing and transmitting external system signals. The camera input module is used to receive and decode the captured image signal input by the camera, obtain the image decoding signal, and transmit it to the main control chip. The multimedia module is used for input and output of multimedia signals. The communication module is used for input and output of Ethernet and wireless signals to support the vehicle Ethernet service-oriented architecture (SOA). By integrating the chips of the multi-functional domain into the vehicle-mounted central computing system, the controller hardware cost is reduced, the signal transmission delay is reduced, and the development efficiency is improved.

[0031] Furthermore, a specific example can be used to demonstrate all the modules included in the vehicle-mounted central computing system. Figure 2 This is another structural diagram of a vehicle-mounted central computing system provided in the first embodiment of the present invention. Figure 2As shown, the vehicle's central computing system includes a main control chip 1, a secondary control module 2, a camera input module 3, a multimedia input module 4, and a communication module 5. Fakra is a vehicle-specific interface primarily used to connect in-vehicle electronic devices, such as navigation systems, electronic devices, and car entertainment systems. This interface is based on automotive interface standards and typically consists of a small multi-chip connector. It can connect to many vehicle systems, providing multiple functions and supporting various data transmission protocols. The main block is the main connector. The secondary control module 2 includes a secondary control chip, a power tree module, an external communication module, a startup module, and a risk control module. The secondary control chip is connected to the main control chip 1, which is in turn connected to the power tree, the external communication module, and the startup module. The camera input module 3 includes three derializer chips. The multimedia input module 4 includes an audio module 41, a video module 42, and an external interface 43. The communication module 5 includes an Ethernet communication module 51 and a wireless communication module 52.

[0032] For further information, please refer to Figure 2 The secondary control module 2 shown includes:

[0033] A secondary control chip, a power tree module, an external communication module and a startup module, wherein the secondary control chip is connected to the main control chip 1 , and the secondary control chip is connected to the power tree, the external communication module and the startup module respectively.

[0034] The secondary control chip is used to receive module signals from other modules in the secondary control module 2, manage the internal power supply of the system based on the module signals, and process and transmit external signals of the system; the power tree module is used to power the system itself based on the management signal of the secondary control chip; the external communication module is used to receive and send external signals of the system; the startup module is used to periodically wake up the secondary control chip and safely start the secondary control chip.

[0035] In this embodiment, the secondary control chip can be a microcontroller unit MCU chip. The power tree module can be understood as a module that provides power to the microsystem. The module signal can be understood as a signal transmitted through other modules in the secondary control module 2, such as a wake-up signal transmitted by the startup module. The external communication module can be understood as a module for sending and receiving other signals in the vehicle, for example, it can include CAN / LIN and other methods. The system external signal can be understood as a vehicle internal signal outside the system transmitted through the external communication module, for example, it can include a key door power-on signal, an external button IO signal and an Airbag safety airbag detection signal. The startup module can be understood as a module for optimizing the startup of the secondary control chip, for example, it can include a real-time clock (RTC) and FLASH and other devices.

[0036] Specifically, the secondary control chip can receive module signals of other modules in the secondary control module 2, for example, through Figure 2 The CAN / LIN chip in the vehicle realizes functions such as low-speed communication with other devices in the vehicle. The two-way CAN-FD chip is connected to the MCU to transmit and receive CAN network data. One CAN supports specific frame sleep through the SPI interface; the MCU is externally connected to a LIN chip to support LIN low-speed communication. The secondary control chip can control the power system timing based on the module signal to ensure that the power module correctly powers on and off the system, so as to manage the internal power supply of the system and process and transmit external signals of the system. The power tree module is used to power the system itself based on the management signal of the secondary control chip; the external communication module is used to receive and send external signals of the system; the startup module is used to periodically wake up the secondary control chip and the safe startup of the secondary control chip, for example Figure 2 The RTC shown supports timed wake-up of the secondary control chip, and the FLASH chip stores the BOOT startup program for secure startup of the secondary control chip.

[0037] Optionally, the secondary control module 2 further includes: a risk control module, which is connected to the secondary control chip; the risk control module is used to manage and control risks existing in the system.

[0038] Furthermore, the risk control module includes: an environmental control unit, an encryption unit and a debugging interface.

[0039] The environmental monitoring unit is used to collect environmental information inside the system and transmit it to the secondary control chip, and receive the control signal of the secondary control chip to control the speed of its own fan; the encryption unit is used to receive data from the main control chip 1 and perform encryption processing, and receive data from the secondary control chip and perform encryption processing; the debugging interface is used to receive external debugging signals to perform software debugging on the main control chip 1 and the secondary control chip respectively.

[0040] In this embodiment, the environmental monitoring unit can be understood as the collection of factors in the environment that have an impact on the internal system. Environmental information can be understood as information reflecting the environmental status of the system, such as the ambient thermometer voltage, etc. The system can adopt air cooling for heat dissipation, and a fan can be included for heat dissipation, and heat dissipation can be controlled by adjusting the fan speed. The encryption unit can be hardware that implements encryption, such as a hardware security module (HSM). The debugging interface can be, for example, a DEBUG debugging interface. The external debugging signal can be understood as a signal transmitted outside the system for software debugging.

[0041] Specifically, the vehicle-mounted central computing system can be cooled by air, and the secondary control chip can be connected to an external risk control module to manage the risks in the system. Environmental information is collected by the voltage and temperature monitoring equipment in the environmental monitoring unit and transmitted to the secondary control chip. The secondary control chip adjusts the fan speed in real time according to the management strategy based on the internal environmental information of the system (such as temperature). The encryption unit can receive the data of the main control chip 1 and perform encryption processing, and receive the data of the secondary control chip and perform encryption processing, for example Figure 2 The encryption unit shown can be an HSM information encryption chip that supports national encryption algorithms. It connects to the MCU and SoC via two SPI lines, respectively, and can encrypt data processed by the MCU and SoC. A debug interface can be reserved to receive external debug signals, allowing software debugging of the MCU and SoC separately via UART.

[0042] Furthermore, the multimedia module includes: an audio module 41 , a video module 42 and an external interface 43 .

[0043] The audio module 41 is used to process and transmit audio signals; the video module 42 is used to process and transmit video signals; the external interface 43 is used to communicate with external devices through transmission interfaces of different communication types and provide a charging function for the external devices.

[0044] In this embodiment, the communication type can be understood as the communication type required for connecting different external devices with the main control chip 1 .

[0045] Specifically, the multimedia module may include an audio module 41, a video module 42 and an external interface 43. The audio module 41 may be used to process and transmit audio signals; the video module 42 may be used to process and transmit video signals, for example Figure 2 The video module 42 shown can be connected to three serializer video encoding chips via the SoC DP interface. A single chip supports up to two 2K ​​high-definition video outputs and up to six high-definition video display outputs. The external interface 43 can be used to communicate with external devices through different types of transmission interfaces and provide charging functions for the external devices, such as Figure 2 The SoC in it connects to the iPod Apple-certified chip through the I2C interface, supports Apple's CARPLAY function, and can also be connected to an external 2-way USB communication interface. Through the USB Charing charging chip, it can provide communication and charging functions for USB external devices.

[0046] The audio module 41 includes a power amplifier chip, an audio ADC chip and a vehicle audio bus chip.

[0047] The vehicle audio bus chip is used to receive and transmit vehicle audio signals; the audio ADC chip converts the vehicle audio signals into digital audio signals and transmits them to the main control chip 1; the power amplifier chip is used to output the audio to be played transmitted by the main control chip 1 through an external speaker.

[0048] In this embodiment, the Automotive Audio Bus (A2B) chip can be understood as being used for data transmission between audio devices within the vehicle, such as audio transmission between a microphone, an amplifier, and a multimedia host, etc. The amplifier chip can be, for example, an AMP CLASS-D built-in amplifier chip.

[0049] Specifically, the vehicle audio bus chip can receive and transmit vehicle audio signals, for example Figure 2 The SoC has two A2B chips, and a single chip can support 32-channel audio signal transmission. The audio ADC chip can convert the vehicle audio signal into a digital audio signal and transmit it to the main control chip 1, for example Figure 2 The MIC converts the analog audio signal into a TDM digital audio signal through the audio ADC chip and transmits it to the SoC chip. The power amplifier chip can output the audio to be played transmitted by the main control chip 1 through an external speaker, for example Figure 2 The TDM audio interface of the SoC is connected to the AMP CLASS-D built-in amplifier chip, and up to 6-channel analog audio output is achieved through external speakers to play audio sounds such as music and calls.

[0050] Furthermore, the communication module includes: an Ethernet communication module 51 and a wireless communication module 52. The Ethernet communication module 51 includes an Ethernet physical layer PHY chip and an Ethernet switch SWITCH chip. The Ethernet switch SWITCH chip is connected to the main control chip 1 and the secondary control chip respectively.

[0051] The Ethernet communication module is used to build an in-vehicle Ethernet architecture under the Ethernet transmission protocol through the Ethernet switch chip and the Ethernet physical layer chip, and provide data transmission between other controllers in the vehicle; the wireless communication module 52 is used to receive wireless signals and send them to the main control chip 1.

[0052] For example, Figure 2 As shown in the figure, for the Ethernet part, the SoC can connect to the multi-G Ethernet PHY chip through SGMII as the backbone Ethernet channel, supporting a maximum transmission rate of 2.5G, realizing the high-speed transmission requirements of the central computing platform under the automotive Ethernet architecture. At the same time, the Ethernet SWITCH chip is connected to the external Ethernet through the SGMII interface and the PCIE interface, supporting multi-channel Gigabit and multi-channel 100M Ethernet interface expansion and 100base-TX interface for vehicle Ethernet diagnosis. The service-oriented automotive SOA architecture needs to be based on the in-vehicle Ethernet architecture. Through the 100M and Gigabit Ethernet interfaces, data transmission between the in-vehicle central computing system and other controller interfaces can be realized to reduce transmission delay. The Ethernet SWITCH chip can also be connected to the secondary control chip, that is, the MCU chip, through the RGMII interface, so that the SOC and MCU can access the Ethernet network at the same time without signal conversion. Through the Ethernet transmission protocol, the whole vehicle Ethernet SOA architecture is supported.

[0053] The wireless communication module 52 includes a positioning unit, a wireless communication unit, an in-vehicle device wireless connection unit and a radio frequency interface unit.

[0054] The positioning unit is used to receive the positioning signal and transmit it to the main control chip 1; the wireless communication unit is used to receive data through wireless communication and transmit it to the main control chip 1; the in-vehicle device wireless connection unit is used to provide wireless transmission connection function to the in-vehicle device; the radio frequency interface unit is used to provide radio frequency interface function through the antenna.

[0055] Specifically, the vehicle-mounted central computing system can simultaneously support multiple forms of wireless networking functions through the wireless communication module 52. The wireless communication module 52 includes a positioning unit, a wireless communication unit, an in-vehicle device wireless connection unit, and a radio frequency interface unit. For example, it can support wireless networking functions such as 5G+V2X, BT, WIFI, GNSS, and TUNER. Figure 2 As shown, the SoC can connect to the RF interface unit (RFI)—the 5G+V2X communication module—via communication interfaces such as USB and SPI. The USB interface enables high-speed transmission of 5G and V2X communication data, while SPI allows for configuration and status monitoring of the communication module. The 5G+V2X module uses a MIMO antenna to implement the RF interface. After receiving 5G data from the cloud, the SoC can transmit it to other controller nodes in the vehicle via an Ethernet interface. The radio TUNER chip in the wireless communication unit, through the I2S interface, demodulates the received radio signal, converts it into an audio signal, and transmits it to the SoC. The SoC then outputs the audio signal through an A2B amplifier or a built-in amplifier chip. The SoC can connect to the Bluetooth chip in the external wireless communication unit via a UART interface, supporting Bluetooth low energy. The in-vehicle device wireless connection unit can utilize a BT / WIFI module supporting WIFI6 and BT5.2, enabling in-vehicle device Wi-Fi connectivity, Bluetooth phone calls, and Bluetooth music playback. The positioning unit can use a dual-frequency high-precision GNSS positioning chip to support high-precision positioning of the entire vehicle, transmit positioning data through UART, and realize positioning time synchronization function through 1PPS signal.

[0056] Furthermore, the system further includes: a storage module, which is connected to the main control chip 1; the storage module includes: a first storage chip and a second storage chip.

[0057] The first storage chip is used to store applications of the intelligent driving functional domain and the cockpit functional domain in the functional domain; the second storage chip is used to store programs and parameters related to the quick start system.

[0058] In this embodiment, the first storage chip can be understood as a large-capacity storage chip, such as a large-capacity UFS storage chip. The second storage chip can be understood as a high-speed read / write chip, such as a FLASH chip.

[0059] Specifically, the first storage chip stores the applications of the intelligent driving function domain and the cockpit function domain in the functional domain, and the second storage chip stores the programs and parameters related to the quick start system. Figure 2 The SoC is connected to a large-capacity UFS storage chip, and the storage capacity can be evenly distributed between intelligent driving and cockpit applications; the external FLASH chip is used to store the BOOT startup program and save key parameters after power-off, so that the SoC can start quickly after the system is powered on.

[0060] Example 2

[0061] Figure 3A flowchart of a vehicle-mounted central computing method is provided for the second embodiment of the present invention. This embodiment is applicable to the situation of multi-function domain fusion. The method can be executed by a vehicle-mounted central computing system. The vehicle-mounted central computing system includes a main control chip, a secondary control module, a camera input module, a multimedia input module and a communication module. The main control chip is connected to the secondary control module, the camera input module, the multimedia input module and the communication module respectively. The vehicle-mounted central computing system can be configured in the vehicle. Figure 3 As shown, the method includes:

[0062] S110 , receiving module signals input from other modules through the main control chip, and providing functional control of different functional domains of the vehicle through software virtualization according to the module signals.

[0063] S120 , managing the internal power supply of the system and processing and transmitting the external signals of the system through the secondary control module.

[0064] S130: Receive a shooting picture signal input by a camera through the camera input module, decode the shooting picture signal, obtain a picture decoding signal, and transmit it to the main control chip.

[0065] S140: Input and output multimedia signals through the multimedia module.

[0066] S150: Support vehicle Ethernet service-oriented architecture (SOA) by inputting and outputting Ethernet signals and wireless signals through the communication module.

[0067] The technical solution of the embodiment of the present invention is to apply the method to the constructed on-board central computing system, receive module signals input by other modules through the main control chip, and provide functional control of different functional domains of the vehicle through software virtualization based on the module signals. The secondary control module manages the internal power supply of the system and processes and transmits external signals of the system. The camera input module receives the shooting picture signal input by the camera, decodes the shooting picture signal, obtains the picture decoding signal, and transmits it to the main control chip. By integrating the chip under the multi-functional domain into the on-board central computing system, the controller hardware cost is reduced, the signal transmission delay is reduced, and the development efficiency is improved.

[0068] The vehicle-mounted central computing system provided by the embodiment of the present invention can execute the vehicle-mounted central computing method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

Claims

1. A vehicle-mounted central computing system, characterized in that: include: A main control chip, a secondary control module, a camera input module, a multimedia input module, and a communication module, wherein the main control chip is connected to the secondary control module, the camera input module, the multimedia input module, and the communication module respectively; The main control chip is used to receive module signals input by other modules and provide functional control of different functional domains of the vehicle through software virtualization based on the module signals; The secondary control module is used to manage the power supply inside the system and process and transmit external signals of the system; The camera input module is used to receive the shooting picture signal input by the camera, decode the shooting picture signal, obtain the picture decoding signal and transmit it to the main control chip; The multimedia module is used for inputting and outputting multimedia signals; The communication module is used for inputting and outputting Ethernet signals and wireless signals to support the vehicle Ethernet service-oriented architecture SOA.

2. The system according to claim 1, wherein: The secondary control module includes: a secondary control chip, a power tree module, an external communication module and a startup module, wherein the secondary control chip is connected to the main control chip, and the secondary control chip is connected to the power tree, the external communication module and the startup module respectively; The secondary control chip is used to receive module signals from other modules in the secondary control module, manage the internal power supply of the system based on the module signals, and process and transmit external signals of the system; The power tree module is used to power the system itself based on the management signal of the secondary control chip; The external communication module is used to receive and send signals outside the system; The startup module is used for regularly waking up the secondary control chip and safely starting the secondary control chip.

3. The system according to claim 2, characterized in that The secondary control module further includes: a risk control module, the risk control module being connected to the secondary control chip; The risk control module is used to manage and control the risks existing in the system.

4. The system according to claim 3, characterized in that The risk control module includes: an environmental control unit, an encryption unit and a debugging interface; The environment monitoring unit is used to collect environmental information inside the system and transmit it to the secondary control chip, and receive control signals from the secondary control chip to control the speed of its own fan; The encryption unit is used to receive data from the main control chip and perform encryption processing, and receive data from the secondary control chip and perform encryption processing; The debugging interface is used to receive external debugging signals to perform software debugging on the main control chip and the secondary control chip respectively.

5. The system according to claim 1, wherein: The multimedia module includes: an audio module, a video module and an external interface; The audio module is used to process and transmit audio signals; The video module is used to process and transmit video signals; The external interface is used to establish a communication connection with an external device through a transmission interface of different communication types, and provide a charging function for the external device.

6. The system according to claim 5, characterized in that The audio module includes a power amplifier chip, an audio ADC chip and a vehicle audio bus chip; The vehicle audio bus chip is used to receive and transmit vehicle audio signals; The audio ADC chip converts the vehicle audio signal into a digital audio signal and transmits it to the main control chip; The power amplifier chip is used to output the audio to be played transmitted by the main control chip through an external speaker.

7. The system according to claim 1, wherein: The communication module includes: an Ethernet communication module and a wireless communication module, the Ethernet communication module includes an Ethernet physical layer chip and an Ethernet switch chip, and the Ethernet switch chip is connected to the main control chip and the secondary control chip respectively; The Ethernet communication module is used to build an in-vehicle Ethernet architecture under the Ethernet transmission protocol through the Ethernet switch chip and the Ethernet physical layer chip, providing data transmission between other controllers in the vehicle; The wireless communication module is used to receive wireless signals and send them to the main control chip.

8. The system according to claim 7, characterized in that The wireless communication module includes a positioning unit, a wireless communication unit, an in-vehicle device wireless connection unit and a radio frequency interface unit; The positioning unit is used to receive the positioning signal and transmit it to the main control chip; The wireless communication unit is used to receive data via wireless communication and transmit the data to the main control chip; The in-vehicle device wireless connection unit is used to provide a wireless transmission connection function to the in-vehicle device; The radio frequency interface unit is used to provide a radio frequency interface function through an antenna.

9. The system according to claim 1, wherein: Also includes: A storage module connected to the main control chip; the storage module includes: a first storage chip and a second storage chip; The first storage chip is used to store applications of the intelligent driving functional domain and the cockpit functional domain in the functional domains; The second storage chip is used to store programs and parameters related to the fast startup system.

10. A vehicle-mounted central computing method, characterized in that: Applicable to the vehicle-mounted central computing system as claimed in any one of claims 1 to 9, the vehicle-mounted central computing system comprising a main control chip, a secondary control module, a camera input module, a multimedia input module, and a communication module, the main control chip being connected to the secondary control module, the camera input module, the multimedia input module, and the communication module, respectively; the method comprising: Receive module signals input from other modules through the main control chip, and provide functional control of different functional domains of the vehicle through software virtualization according to the module signals; Management of the system's internal power supply and processing and transmission of the system's external signals through the secondary control module; The camera input module receives the shooting picture signal input by the camera, decodes the shooting picture signal, obtains a picture decoding signal and transmits it to the main control chip; Input and output multimedia signals through the multimedia module; The communication module inputs and outputs Ethernet signals and wireless signals to support vehicle Ethernet SOA.

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