Auxiliary driving controller and system based on nationwide chip

Abstract

The invention discloses an auxiliary driving controller and system based on a nationwide chip, and relates to the technical field of auxiliary driving, and the auxiliary driving controller comprises an SOC, an MCU, a PMIC, a DDR, an EMMC, a CAN, an Ethernet PHY and a deserializer. The SOC and the MCU carry out data interaction through an SPI and an IO, the SOC accesses camera data through a deserializer and a GMSL interface, and the SOC accesses DDR and EMMC to carry out data interaction and storage, and carries out vehicle-mounted Ethernet communication with the outside through an Ethernet PHY; the MCU carries out communication and data interaction with the outside through a CAN (Controller Area Network); the level of the vehicle-mounted storage battery is preprocessed and then supplies power to the SOC and the MCU through the PMIC. The problems that an auxiliary driving domain controller is difficult to autonomously control, high in cost and the like can be solved.

Description

Technical Field

[0001] The present application relates to the field of assisted driving technology, and in particular to an assisted driving controller and system based on domestically produced chips. Background Art

[0002] With the in-depth changes in the automotive industry and technology, more and more cars are equipped with assisted driving systems. These systems achieve functions such as lane keeping, traffic light recognition, automatic parking, and automatic emergency braking through a combination of controllers, sensors, and algorithms. They can effectively help drivers avoid accidents, improve driving comfort, and improve traffic efficiency.

[0003] Realizing the above functions places relatively high demands on the computing power of the controller, the security level of the main control chip, stability and reliability. The current main control chip of the assisted driving controller uses foreign SOC, MCU, PMIC, DDR, EMMC and other chips to realize the hardware development of the assisted driving controller, which brings problems such as difficulty in independent control, high cost, limited technical support, and difficulty in rapid iteration. Summary of the invention

[0004] The embodiment of the present application provides an assisted driving controller based on a domestically produced chip. A low-cost, autonomously controllable assisted driving controller is designed using domestically produced chips. The assisted driving controller can meet the requirements of the OEM and solve the current problems of difficulty in autonomous control and high cost.

[0005] In the first aspect, the present application provides an assisted driving controller based on a domestically produced chip, including: SOC, MCU, PMIC, DDR, EMMC, CAN, Ethernet PHY and deserializer;

[0006] The SOC and MCU exchange data through SPI and IO. The SOC accesses the camera data through the deserializer and GMSL interface. The SOC accesses DDR and EMMC for data exchange and storage, and communicates with the outside through the Ethernet PHY for in-vehicle Ethernet.

[0007] MCU communicates and exchanges data with the outside world through CAN;

[0008] The on-board battery level is pre-processed and then powered to the SOC and MCU through the PMIC.

[0009] In some instances, the SOC uses the A1000LE chip from Black Sesame.

[0010] In some instances, the MCU used is the automotive-grade microcontroller E3420 from SemiDrive Technology.

[0011] In some examples, the vehicle battery level is pre-processed and then powered by the MCU through the MCU PMIC, and the SOC through the SOC PMIC.

[0012] In some instances, the SOC PMIC uses the domestic SiRuiPu TPU25 series power supply chip, and the MCU PMIC uses the domestic Xilijie SA47 series power supply chip.

[0013] In some cases, DDR uses the domestically produced LPDDR4 chip IS46LQ32256B.

[0014] In some cases, EMMC uses the domestically produced Jiangbolong FEMDME008G EMMC chip.

[0015] In some cases, CAN uses the domestic chip SIT1044QT.

[0016] In some instances, the Ethernet PHY uses the domestic automotive-grade PHY chip YT8010A.

[0017] In some instances, the deserializer uses the domestic chip AIM46X.

[0018] In a second aspect, the present application provides a driving assistance system comprising an assisted driving controller based on a domestically produced chip as described in any one of the above.

[0019] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0020] The controller hardware circuit is reasonably selected and designed. By using domestically produced chips to implement the hardware circuit design of the assisted driving domain controller, it achieves complete independent control of the hardware on the basis of stable, reliable and scalable mass production, reduces mass production costs, and promotes the widespread application of domestic chips in the automotive industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a hardware circuit design block diagram of an assisted driving controller based on a domestic chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0024] In the following description, the specific embodiments of the present application will be described with reference to the steps and symbols performed by one or more computers, unless otherwise specified. Therefore, these steps and operations will be mentioned several times as being performed by a computer, and the computer execution referred to herein includes the operation of a computer processing unit by an electronic signal representing data in a structured form. This operation converts the data or maintains it at a location in the memory system of the computer, which can be reconfigured or otherwise change the operation of the computer in a manner familiar to testers in the field. The data structure maintained by the data is a physical location in the memory, which has specific characteristics defined by the data format. However, the principles of the present application are described in the above text, which does not represent a limitation, and testers in the field will understand that the following various steps and operations can also be implemented in hardware.

[0025] The term "module" or "unit" used in this article can be regarded as a software object executed on the computing system. The different components, modules, engines and services in this article can be regarded as implementation objects on the computing system. The apparatus and method in this article are preferably implemented in software, but can also be implemented in hardware, all within the scope of protection of this application.

[0026] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "" and "the" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other elements, or there may be intermediate elements. In addition, "connected" or "coupled" as used herein may include wireless connections or wireless couplings. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0027] First, as Figure 1As shown, the present application provides an assisted driving controller based on a domestically produced chip, including: a system on chip (System on Chip, SOC), a microcontroller unit (Microcontroller Unit, MCU), a power management integrated circuit (Power Management IC, PMIC), a double data rate synchronous dynamic random access memory (Double Data Rate, DDR), an embedded memory (Embedded Multi Media Card, EMMC), a controller area network bus (Controller Area Network, CAN), an Ethernet external signal interface chip (Physical Layer, PHY) and a deserializer;

[0028] The SOC and MCU exchange data through the Serial Peripheral Interface (SPI) and Input / Output (IO). The SOC accesses the camera data through the deserializer and Gigabit Multimedia Serial Links (GMSL) interface. The SOC accesses DDR and EMMC for data exchange and storage, and communicates with the outside through the Ethernet PHY for in-vehicle Ethernet.

[0029] MCU communicates and exchanges data with the outside world through CAN;

[0030] The on-board battery level is pre-processed and then powered to the SOC and MCU through the PMIC.

[0031] In another specific example, Figure 1 The hardware circuit of the assisted driving controller shown in the figure is mainly composed of SOC, MCU, PMIC, DDR, EMMC, CAN, Ethernet PHY, deserializer and other chips. SOC and MCU exchange data through 2-way SPI and IO, access camera data through deserializer and GMSL interface, access DDR and EMMC for data exchange and storage, and communicate with the outside through 100BASE-TIPHY chip for on-board Ethernet; MCU communicates and exchanges data with the outside through CAN controller chip; the on-board battery level is pre-processed by anti-reverse, filtering and other circuits, and then the SOC and MCU are powered by PMIC chip.

[0032] In another specific example, the chip selection design is as follows:

[0033] SOC is a main chip that provides AI computing power for autonomous driving or assisted driving systems. SOC is a computing center that uses various interfaces and lines to connect various parts of the entire device. It performs various functions and processes data by running or executing software programs and / or modules stored in DDR, and calling data stored in DDR, so as to perform overall monitoring. Optionally, SOC may include one or more processing cores; preferably, SOC may integrate an application processor and a modem processor, wherein the application processor mainly processes operating storage media, user interfaces, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the SOC.

[0034] Specifically, the hardware circuit of this application uses Heizhima's A1000LE chip, which can access camera signals and process video signals. It has 5TOPS computing power and can efficiently analyze camera data through the coordination of sensors, computing chips and algorithms, thereby providing real-time and accurate perception data for the vehicle.

[0035] In another specific example, MCU is a microcontroller that combines a central processing unit, random access memory (RAM), read-only memory (ROM), IO, etc. to form a complete micro-computing system. MCU is the control center, which uses various interfaces and lines to connect various parts of the entire device, and executes various functions and processes data by connecting to the SOC. Optionally, the MCU may include one or more processing cores; preferably, the MCU may integrate an application processor and a modem processor, wherein the application processor mainly processes operating storage media, user interfaces, and applications, etc., and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the MCU.

[0036] Specifically, the hardware circuit of this application uses the automotive-grade microcontroller E3420 from CoreDrive Technology. This chip integrates ARM Cortex R5 and ARM Cortex R52+ CPU, has rich communication peripherals and a computing power of no less than 26K DMIPS. Through this CPU, it can connect to external CAN devices, ultrasonic radars, etc. to obtain data and realize data interaction with SOC, control and monitoring of onboard signals, etc.

[0037] In another specific example, PMIC is a highly integrated power management chip. Through detailed analysis of the power supply requirements of SOC and MCU, PMIC can be logically connected to SOC and MCU through power management storage medium, so as to manage charging, discharging, and power consumption through power management storage medium. PMIC can also include one or more DC or AC power supplies, recharge storage medium, power failure detection circuit, power converter or inverter, power status indicator and other arbitrary components.

[0038] Specifically, the hardware circuit SOC PMIC of this application uses the domestic SiRuiPu TPU25 series power supply chip, and the MCU PMIC uses the domestic Xilijie SA47 series power supply chip. The above chips combined with external circuit design and parameter configuration can meet the SOC and MCU's requirements for different voltages, currents, power-on and power-off timings, power supply monitoring management, etc., ensuring that the SOC and MCU can work stably and reliably.

[0039] In another specific example, DDR is a double rate synchronous dynamic random access memory, DDR can be used to store software programs and modules, and SOC executes various functional applications and data processing by running the software programs and modules stored in DDR. DDR can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating storage medium, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to specific use, etc. In addition, DDR can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, DDR can also include a controller to provide SOC with access to DDR.

[0040] Specifically, the hardware circuit of this application uses the domestically produced LPDDR4 chip IS46LQ32256B as on-chip high-speed memory, which has the characteristics of low latency, high bandwidth, and low power consumption. By cooperating with the SOC, it completes functions such as real-time processing of video data to meet the needs of the hardware circuit.

[0041] In another specific example, EMMC is an embedded storage device that has fast, rewritable characteristics, and is mainly aimed at the standard specifications of embedded memory for products such as mobile phones or tablets. EMMC integrates a controller in the package, provides a standard interface and manages flash memory, allowing mobile phone manufacturers to focus on other parts of product development and shorten the time to market.

[0042] Specifically, the hardware circuit of this application uses the domestically produced Jiangbolong FEMDME008G EMMC chip, which can meet the data storage needs of this device through reasonable circuit design and storage space planning.

[0043] In another specific example, CAN is a communication bus commonly used in automobiles. It can realize real-time data communication through a pair of twisted pairs. It has the advantages of reliability, flexibility and low cost. The CAN protocol is used for communication between various components in the car, replacing expensive and bulky distribution harnesses. The robustness of the protocol extends its use to other automation and industrial applications. The characteristics of the CAN protocol include complete serial data communication, real-time support, transmission rate up to 1Mb / s, and 11-bit addressing and error detection capabilities.

[0044] Specifically, the hardware circuit of this application uses multiple domestic chips SIT1044QT to complete the hardware interface and communication logic of the CAN protocol, and realizes the CAN communication function with external devices.

[0045] In another specific example, in-vehicle Ethernet has the characteristics of high speed, low latency and high reliability, and is widely used in in-vehicle communications. Ethernet PHY is the physical layer chip that realizes in-vehicle Ethernet communication. The hardware circuit of this application adopts the domestic automotive-grade PHY chip YT8010A combined with the MAC of SOC and external circuits to realize 100BASE-T1 communication between SOC and external in-vehicle Ethernet devices.

[0046] In another specific example, the deserializer is used to convert serial data into parallel data in digital communication. This application uses the domestic chip AIM46X to deserialize the camera data and send it to the SOC to achieve real-time access to image data.

[0047] Through the above technical solution, this application can achieve the access of 1 8-megapixel camera, 4 CANs and 1 100BASE-T1 Ethernet data; AI computing power is not less than 5Tops, CPU computing power is not less than 26K DMIPS; 16GEMMC and 2GB DDR; system functional safety reaches ASIL-B, MCU functional safety reaches ASIL-D; chip localization rate is 100% and other indicators. This hardware circuit, combined with onboard algorithm processing, can realize auxiliary driving functions such as automatic emergency braking, lane departure warning, real-time monitoring and analysis of the vehicle's driving direction environment.

[0048] In the second aspect, the present application provides a driving assistance system including the above-mentioned assisted driving controller based on the domestically produced chip, the driving assistance system includes a lane keeping assistance system, an automatic parking assistance system, a braking assistance system, a reversing assistance system and a driving assistance system, wherein the controller is the core of the driving assistance system, wherein the controller includes: SOC, MCU, PMIC, DDR, EMMC, CAN, Ethernet PHY and deserializer;

[0049] The SOC and MCU exchange data through SPI and IO. The SOC accesses the camera data through the deserializer and GMSL interface. The SOC accesses DDR and EMMC for data exchange and storage, and communicates with the outside through the Ethernet PHY for in-vehicle Ethernet.

[0050] MCU communicates and exchanges data with the outside world through CAN;

[0051] The on-board battery level is pre-processed and then powered to the SOC and MCU through the PMIC.

[0052] In another specific example, the controller hardware circuit is mainly composed of SOC, MCU, PMIC, DDR, EMMC, CAN, Ethernet PHY, deserializer and other chips. SOC and MCU exchange data through 2-way SPI and IO, access camera data through deserializer and GMSL interface, access DDR and EMMC for data exchange and storage, and communicate with the outside through 100BASE-TIPHY chip for on-board Ethernet; MCU communicates and exchanges data with the outside through CAN controller chip; the on-board battery level is pre-processed by anti-reverse, filtering and other circuits, and then the SOC and MCU are powered through the PMIC chip.

[0053] In another specific example, the chip selection design is as follows:

[0054] SOC is a main chip that provides AI computing power for autonomous driving or assisted driving systems. SOC is a computing center that uses various interfaces and lines to connect various parts of the entire device. It performs various functions and processes data by running or executing software programs and / or modules stored in DDR, and calling data stored in DDR, so as to perform overall monitoring. Optionally, SOC may include one or more processing cores; preferably, SOC may integrate an application processor and a modem processor, wherein the application processor mainly processes operating storage media, user interfaces, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the SOC.

[0055] Specifically, the hardware circuit of this application uses Heizhima's A1000LE chip, which can access camera signals and process video signals. It has 5TOPS computing power and can efficiently analyze camera data through the coordination of sensors, computing chips and algorithms, thereby providing real-time and accurate perception data for the vehicle.

[0056] In another specific example, MCU is a microcontroller that combines a central processing unit, random access memory (RAM), read-only memory (ROM), IO, etc. to form a complete micro-computing system. MCU is the control center, which uses various interfaces and lines to connect various parts of the entire device, and executes various functions and processes data by connecting to the SOC. Optionally, the MCU may include one or more processing cores; preferably, the MCU may integrate an application processor and a modem processor, wherein the application processor mainly processes operating storage media, user interfaces, and applications, etc., and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the MCU.

[0057] Specifically, the hardware circuit of this application uses the automotive-grade microcontroller E3420 from CoreDrive Technology. This chip integrates ARM Cortex R5 and ARM Cortex R52+ CPU, has rich communication peripherals and a computing power of no less than 26K DMIPS. Through this CPU, it can connect to external CAN devices, ultrasonic radars, etc. to obtain data and realize data interaction with SOC, control and monitoring of onboard signals, etc.

[0058] In another specific example, PMIC is a highly integrated power management chip. Through detailed analysis of the power supply requirements of SOC and MCU, PMIC can be logically connected to SOC and MCU through power management storage medium, so as to manage charging, discharging, and power consumption through power management storage medium. PMIC can also include one or more DC or AC power supplies, recharge storage medium, power failure detection circuit, power converter or inverter, power status indicator and other arbitrary components.

[0059] Specifically, the hardware circuit SOC PMIC of this application uses the domestic SiRuiPu TPU25 series power supply chip, and the MCU PMIC uses the domestic Xilijie SA47 series power supply chip. The above chips combined with external circuit design and parameter configuration can meet the SOC and MCU's requirements for different voltages, currents, power-on and power-off timings, power supply monitoring management, etc., ensuring that the SOC and MCU can work stably and reliably.

[0060] In another specific example, DDR is a double rate synchronous dynamic random access memory, DDR can be used to store software programs and modules, and SOC executes various functional applications and data processing by running the software programs and modules stored in DDR. DDR can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating storage medium, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to specific use, etc. In addition, DDR can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, DDR can also include a controller to provide SOC with access to DDR.

[0061] Specifically, the hardware circuit of this application uses the domestically produced LPDDR4 chip IS46LQ32256B as on-chip high-speed memory, which has the characteristics of low latency, high bandwidth, and low power consumption. By cooperating with the SOC, it completes functions such as real-time processing of video data to meet the needs of the hardware circuit.

[0062] In another specific example, EMMC is an embedded storage device that has fast, rewritable characteristics, and is mainly aimed at the standard specifications of embedded memory for products such as mobile phones or tablets. EMMC integrates a controller in the package, provides a standard interface and manages flash memory, allowing mobile phone manufacturers to focus on other parts of product development and shorten the time to market.

[0063] Specifically, the hardware circuit of this application uses the domestically produced Jiangbolong FEMDME008G EMMC chip, which can meet the data storage needs of this device through reasonable circuit design and storage space planning.

[0064] In another specific example, CAN is a communication bus commonly used in automobiles. It can realize real-time data communication through a pair of twisted pairs. It has the advantages of reliability, flexibility and low cost. The CAN protocol is used for communication between various components in the car, replacing expensive and bulky distribution harnesses. The robustness of the protocol extends its use to other automation and industrial applications. The characteristics of the CAN protocol include complete serial data communication, real-time support, transmission rate up to 1Mb / s, and 11-bit addressing and error detection capabilities.

[0065] Specifically, the hardware circuit of this application uses multiple domestic chips SIT1044QT to complete the hardware interface and communication logic of the CAN protocol, and realizes the CAN communication function with external devices.

[0066] In another specific example, in-vehicle Ethernet has the characteristics of high speed, low latency and high reliability, and is widely used in in-vehicle communications. Ethernet PHY is the physical layer chip that realizes in-vehicle Ethernet communication. The hardware circuit of this application adopts the domestic automotive-grade PHY chip YT8010A combined with the MAC of SOC and external circuits to realize 100BASE-T1 communication between SOC and external in-vehicle Ethernet devices.

[0067] In another specific example, the deserializer is used to convert serial data into parallel data in digital communication. This application uses the domestic chip AIM46X to deserialize the camera data and send it to the SOC to achieve real-time access to image data.

[0068] Through the above technical solution, this application can achieve the access of 1 8-megapixel camera, 4 CANs and 1 100BASE-T1 Ethernet data; AI computing power is not less than 5Tops, CPU computing power is not less than 26K DMIPS; 16GEMMC and 2GB DDR; system functional safety reaches ASIL-B, MCU functional safety reaches ASIL-D; chip localization rate is 100% and other indicators. This hardware circuit, combined with onboard algorithm processing, can realize auxiliary driving functions such as automatic emergency braking, lane departure warning, real-time monitoring and analysis of the vehicle's driving direction environment.

[0069] In another specific example, the driving assistance system may further include a display unit, etc., which will not be described in detail here. Specifically in this embodiment, the controller in the driving assistance system will load the executable files corresponding to the processes of one or more application programs into the DDR according to the following instructions, and the controller will run the application programs stored in the DDR to realize various driving assistance functions.

[0070] The above is a detailed introduction to an assisted driving controller and a driving assistance system based on a domestically produced chip provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application; at the same time, for technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

[0071] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0072] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An assisted driving controller based on a domestically produced chip, characterized in that: include: SOC, MCU, PMIC, DDR, EMMC, CAN, Ethernet PHY and deserializer; The SOC and MCU exchange data through SPI and IO. The SOC accesses the camera data through the deserializer and GMSL interface. The SOC accesses DDR and EMMC for data exchange and storage, and communicates with the outside through the Ethernet PHY for in-vehicle Ethernet. MCU communicates and exchanges data with the outside world through CAN; The on-board battery level is pre-processed and then powered to the SOC and MCU through the PMIC.

2. The controller according to claim 1, characterized in that: The SOC uses Black Sesame's A1000LE chip.

3. The controller according to claim 2, characterized in that: The MCU used is the automotive-grade microcontroller E3420 from CoreDrive Technology.

4. The controller according to claim 3, characterized in that: After pre-processing, the on-board battery level powers the MCU through the MCUPMIC, and powers the SOC through the SOC PMIC. Among them, the SOC PMIC uses the domestic SiRuiPu TPU25 series power chip, and the MCU PMIC uses the domestic Xilijie SA47 series power chip.

5. The controller according to claim 4, characterized in that: DDR uses the domestically produced LPDDR4 chip IS46LQ32256B.

6. The controller according to claim 5, characterized in that: EMMC uses the domestically produced Jiangbolong FEMDME008G EMMC chip.

7. The controller according to claim 6, characterized in that: CAN uses the domestic chip SIT1044QT.

8. The controller according to claim 7, characterized in that: The Ethernet PHY uses the domestic automotive-grade PHY chip YT8010A.

9. The controller according to claim 8, characterized in that: The deserializer uses the domestic chip AIM46X.

10. A driving assistance system comprising the assisted driving controller based on a domestically produced chip as described in any one of claims 1 to 9.

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