Vehicle-mounted control system and vehicle-mounted communication method and device

Abstract

The invention provides a vehicle-mounted control system and a vehicle-mounted communication method and device.The vehicle-mounted control system comprises a display screen module, a built-in optical fiber module, a domain control module, an external optical fiber module and at least one electronic control unit; the display screen module is connected with the domain control module through a wire. The domain control module is connected with the built-in optical fiber module through a wire. The domain control module is communicated with the built-in optical fiber module by adopting a serial peripheral interface protocol; the built-in optical fiber module is connected with the external optical fiber module through an optical fiber; the built-in optical fiber module and the external optical fiber module are communicated by adopting a serial peripheral interface protocol; the external optical fiber module is connected with at least one electronic control unit through a wire. According to the vehicle-mounted control system, the vehicle-mounted communication method and the vehicle-mounted communication device provided by the invention, the communication among different ECUs is integrated through the intelligent driving domain controller, and the built-in optical fiber module is connected with the external optical fiber module through the optical fiber, so that the use of wire harnesses is reduced, and the complexity and the cost of the vehicle-mounted communication system are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle networking, and in particular to a vehicle-mounted control system, a vehicle-mounted communication method and a vehicle-mounted communication device. Background Art

[0002] As cars continue to develop towards intelligence and networking, the traditional distributed electronic and electrical architecture with single-chip microcomputers as the core has become difficult to meet the development needs of future intelligent automotive products.

[0003] In the prior art, vehicle-mounted communication methods include a communication method based on a serial peripheral interface (SPI) bus, a communication method based on an I2C bus, a communication method based on a CAN bus, a communication method based on a LIN bus, and the like.

[0004] In the existing vehicle communication methods, multiple different communication protocols coexist and a large amount of wiring harnesses are used, which increases the complexity and cost of intelligent driving domain control and vehicle communication systems. Summary of the invention

[0005] The present invention provides a vehicle-mounted control system, a vehicle-mounted communication method and a device, which are used to solve the technical problems of large usage of vehicle-mounted control system wire harnesses, complex system and high cost in the prior art.

[0006] In a first aspect, the present invention provides a vehicle-mounted control system, comprising: Display screen module, intelligent driving domain controller, external optical fiber module and at least one electronic control unit; the intelligent driving domain controller includes a built-in optical fiber module and a domain control module; The display screen module is connected to the domain control module via a wire; The domain control module is connected to the built-in optical fiber module through a wire; the domain control module and the built-in optical fiber module communicate with each other using a serial peripheral interface protocol; The built-in optical fiber module is connected to the external optical fiber module via an optical fiber; the built-in optical fiber module and the external optical fiber module communicate with each other using a serial peripheral interface protocol; The external optical fiber modules are connected to the at least one electronic control unit through wires.

[0007] In some embodiments, the domain control module and the display screen module communicate using the I2C protocol.

[0008] In some embodiments, the external optical fiber module includes at least one of the following modules: I2C driver module; the I2C driver module is used to process I2C protocol data; CAN driver module; the CAN driver module is used to process CAN protocol data; CANFD driver module; the CANFD driver module is used to process CANFD protocol data; Ethernet driver module: The Ethernet driver module is used to process Ethernet protocol data.

[0009] In some embodiments, the external optical fiber module communicates with an electronic control unit using one of the following protocols: I2C protocol; CAN protocol; CANFD protocol; Ethernet protocol.

[0010] In a second aspect, the present invention further provides a vehicle-mounted communication method based on any vehicle-mounted control system described in the first aspect, comprising: Obtaining reported data sent by the electronic control unit from an external optical fiber module through optical fiber; Converting the protocol type of the reported data into a serial peripheral interface protocol through a built-in optical fiber module; The reported data is sent from the built-in optical fiber module to the domain control module using the serial peripheral interface protocol; The reported data is sent to the display screen module for display through the domain control module.

[0011] In some embodiments, the method further comprises: Acquiring a control instruction input by a user through the display screen module; Converting the protocol type of the control instruction into a serial peripheral interface protocol; The control instruction is sent from the domain control module to the built-in optical fiber module using the serial peripheral interface protocol; Performing protocol conversion via the built-in optical fiber module and sending control instructions to the external optical fiber module via optical fiber; The control instruction is sent to the electronic control unit through the external optical fiber module.

[0012] In a third aspect, the present invention further provides a vehicle-mounted communication device, comprising: An acquisition module, used for acquiring the reported data sent by the electronic control unit from the external optical fiber module through an optical fiber; A protocol conversion module, used for converting the protocol type of the reported data into a serial peripheral interface protocol through a built-in optical fiber module; A first transmission module, used to send the reported data from the built-in optical fiber module to the domain control module using the serial peripheral interface protocol; The second transmission module is used to send the control instruction to the electronic control unit through the external optical fiber module.

[0013] In a fourth aspect, the present invention further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the in-vehicle communication method as described above is implemented.

[0014] In a fifth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described vehicle-mounted communication methods.

[0015] In a sixth aspect, the present invention further provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the vehicle-mounted communication method as described above is implemented.

[0016] The vehicle-mounted control system, vehicle-mounted communication method and device provided by the present invention integrate the communication between different ECUs through the intelligent driving domain controller. The built-in optical fiber module is connected to the external optical fiber module through optical fiber to realize virtualized communication based on the serial peripheral interface protocol, thereby reducing the use of wiring harnesses and reducing the complexity and cost of the vehicle-mounted communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the vehicle-mounted control system provided by the present invention; Figure 2 It is a flow chart of the vehicle-mounted communication method provided by the present invention; Figure 3 It is a schematic diagram of the process of full-duplex transmission of data on the SPI bus provided by the present invention; Figure 4 It is a structural schematic diagram of the vehicle-mounted communication device provided by the present invention; Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0020] Figure 1 Schematic diagram of the structure of the vehicle control system provided by the present invention, such as Figure 1 As shown, the vehicle-mounted control system provided by the present invention includes: Display screen module, intelligent driving domain controller, external optical fiber module and at least one electronic control unit; the intelligent driving domain controller includes a built-in optical fiber module and a domain control module; The display screen module is connected to the domain control module via a wire; The domain control module is connected to the built-in optical fiber module through a wire; the domain control module and the built-in optical fiber module communicate with each other using a serial peripheral interface protocol; The built-in optical fiber module is connected to the external optical fiber module via an optical fiber; the built-in optical fiber module and the external optical fiber module communicate with each other using a serial peripheral interface protocol; The external optical fiber modules are connected to the at least one electronic control unit through wires.

[0021] Specifically, the display screen module may include a touch screen. The display screen module may be used as a user input device to send control instructions and display the status of each terminal node.

[0022] The intelligent driving domain controller is the software operation platform of the entire virtualization channel system, including operation resource provision, power control, status control, etc.

[0023] The domain control module is used to send and receive touch screen data to complete I2C and SPI protocol conversion, and process data reported by each ECU.

[0024] The built-in optical fiber module is used to complete the photoelectric conversion and optical path maintenance with the external optical fiber module.

[0025] The external fiber optic module is used for photoelectric conversion, optical path maintenance, and processing of I2C protocol, CAN protocol or CANFD protocol.

[0026] ECU is used to control specific functions, such as doors, windows, air conditioning volume, lights, audio playback, etc. It exchanges data with external fiber optic modules through CAN, I2C or CANFD protocols.

[0027] The vehicle-mounted control system provided by the present invention integrates the communications between different ECUs through the intelligent driving domain controller. The built-in optical fiber module is connected to the external optical fiber module through optical fiber to realize virtualized communication based on the serial peripheral interface protocol, thereby reducing the use of wiring harnesses and reducing the complexity and cost of the vehicle-mounted communication system.

[0028] In some embodiments, the domain control module and the display screen module communicate using the I2C protocol.

[0029] Specifically, in an embodiment of the present application, the domain control module includes an I2C driver module, which is used to convert between the I2C protocol and the serial peripheral interface protocol.

[0030] The domain control module and the display screen module communicate using the I2C protocol.

[0031] The domain control module collects the reported data from each ECU through the SPI bus, including status information, and sends this information to the display screen.

[0032] The display screen displays the current status information in real time, such as door status, window status, air conditioning status, light status, audio playback status, etc.

[0033] The vehicle-mounted control system provided by the present invention displays the status information of each ECU in real time through a display screen, making it convenient for users to understand the current status of the vehicle and improving safety.

[0034] In some embodiments, the external optical fiber module includes at least one of the following modules: I2C driver module; the I2C driver module is used to process I2C protocol data; CAN driver module; the CAN driver module is used to process CAN protocol data; CANFD driver module; the CANFD driver module is used to process CANFD protocol data; Ethernet driver module: The Ethernet driver module is used to process Ethernet protocol data.

[0035] In some embodiments, the external optical fiber module communicates with an electronic control unit using one of the following protocols: I2C protocol; CAN protocol; CANFD protocol; Ethernet protocol.

[0036] Specifically, in an embodiment of the present application, the external optical fiber module includes one or more of an I2C driver module, a CAN driver module, a CANFD driver module, an Ethernet driver module, etc.

[0037] The I2C driver module is used to process I2C protocol data.

[0038] The CAN driver module is used to process CAN protocol data.

[0039] The CANFD driver module is used to process CANFD protocol data.

[0040] The Ethernet driver module is used to process Ethernet protocol data.

[0041] In an embodiment of the present application, the SPI bus is used as a virtualized communication channel, and with the help of an optical fiber module, a virtual connection topology of multiple ECUs and intelligent driving domain controllers is realized, thereby achieving bidirectional stable and reliable transmission of data.

[0042] The intelligent driving domain controller receives data from different ECUs and encapsulates it to form a standardized data packet.

[0043] The intelligent driving domain controller sends standardized data packets to the target ECU via the SPI bus.

[0044] The standardized data packet contains information such as frame length, interface type, interface number, source address, destination address, supplementary information, transmission payload, check word, data status flag, etc.

[0045] The intelligent driving domain controller supports the conversion of multiple communication protocols (such as I2C, CAN, CANFD, etc.), and only requires adding a terminal ECU to the topology.

[0046] When the data sent by an ECU uses a non-SPI protocol, the intelligent driving domain controller is responsible for converting the data into the SPI protocol format and transmitting it virtually through the SPI bus.

[0047] Conversely, when an ECU needs to receive data that is not in the SPI protocol, the intelligent driving domain controller is responsible for converting the SPI protocol data into the target protocol format.

[0048] During data transmission, the intelligent driving domain controller verifies the transmitted data, detects faults, and performs data retransmission mechanisms to ensure the integrity, stability, and reliability of the system. The intelligent driving domain controller has a fault detection mechanism that can handle communication anomalies in a timely manner.

[0049] The vehicle control system provided by the present invention supports the display screen to send control commands, and supports the virtualization transmission of data of multiple communication protocols such as I2C, CAN, CANFD, etc. between ECUs in the vehicle through the conversion of SPI to multiple communication protocols such as I2C / CAN / CANFD, which simplifies the automotive electronic communication topology to a certain extent and simplifies the design and maintenance of the system.

[0050] Figure 2is a flow chart of the vehicle-mounted communication method provided by the present invention, such as Figure 2 As shown, the vehicle-mounted communication method provided by the present invention includes: Step 201, obtaining the reporting data sent by the electronic control unit from the external optical fiber module through the optical fiber; Step 202: convert the protocol type of the reported data into a serial peripheral interface protocol through a built-in optical fiber module; Step 203: Using the serial peripheral interface protocol to send the reported data from the built-in optical fiber module to the domain control module; Step 204: Send the reported data to the display screen module for display via the domain control module.

[0051] Specifically, in the embodiment of the present application, the DSPI of the domain control module is a slave, and the OLT, that is, the SPI of the built-in optical module, is the master.

[0052] Figure 3 FIG. 1 is a flow chart of full-duplex transmission of data on the SPI bus provided by the present invention, such as Figure 3 As shown, the slave (DSPI) actively sends reporting data to the host (the built-in optical fiber module in the intelligent driving domain controller).

[0053] As a slave, after the data is ready, it sends an RDY interrupt to the host, prepares the payload data, and waits for the host to respond.

[0054] After the host receives the RDY interrupt from the slave, it prepares the payload to send a request frame and initiates normal SPI chip select, clock, and data information to the slave.

[0055] After receiving the chip select and clock signals from the host, the slave verifies the received payload send request frame, sends the effective payload, and verifies the received data. If the verification fails, the current payload is discarded and the interrupt request is re-initiated.

[0056] The host performs data verification on the received effective load. If the verification passes, it sends a load confirmation frame to the slave. If the verification fails, it sends a load retransmission request frame to the slave. If the slave receives a load retransmission request frame, it retransmits the current load data, but the same load data shall not be transmitted more than three times. If the retransmission confirmation is received continuously, the interrupt signal is re-initiated.

[0057] The vehicle-mounted communication method provided by the present invention integrates the communications between different ECUs through an intelligent driving domain controller. The built-in optical fiber module is connected to the external optical fiber module through optical fiber to realize virtualized communication based on the serial peripheral interface protocol, thereby reducing the use of wiring harnesses and reducing the complexity and cost of the vehicle-mounted communication system.

[0058] At the same time, it supports the slave to actively send data to the host, improves the real-time and flexibility of data transmission, supports SPI duplex reliable transmission based on SPI interrupt and retransmission strategies, improves the communication stability of automotive electronics, and reduces the CPU occupancy of the intelligent driving domain controller.

[0059] In some embodiments, Acquiring a control instruction input by a user through the display screen module; Converting the protocol type of the control instruction into a serial peripheral interface protocol; The control instruction is sent from the domain control module to the built-in optical fiber module using the serial peripheral interface protocol; Performing protocol conversion via the built-in optical fiber module and sending control instructions to the external optical fiber module via optical fiber; The control instruction is sent to the electronic control unit through the external optical fiber module.

[0060] Specifically, in the embodiment of the present application, the steps for the user to issue a command are as follows: The user sends control instructions through the touch screen; The touch screen sends commands to the domain control module in the intelligent driving domain controller through the I2C protocol; The domain control module completes data processing and sends the control command to the control ECU through the SPI virtualization channel; After receiving the command, the control ECU executes the command operation; The control ECU sends the current status information back to the intelligent driving domain controller through the SPI virtualized channel bus; The intelligent driving domain controller sends status information to the display screen, shows the command operation status, and monitors the status in real time.

[0061] The vehicle-mounted control system provided by the present invention issues control commands in real time through a display screen and displays status information of each ECU, making it convenient for users to understand the current status of the vehicle and improving safety.

[0062] The vehicle-mounted communication device provided by the present invention is described below. The vehicle-mounted communication device described below and the vehicle-mounted communication method described above can be referred to each other.

[0063] Figure 4 Schematic diagram of the structure of the vehicle-mounted communication device provided by the present invention, such as Figure 4 As shown, the vehicle-mounted communication device provided by the present invention includes: The acquisition module 401 is used to acquire the reported data sent by the electronic control unit from the external optical fiber module through the optical fiber; The protocol conversion module 402 is used to convert the protocol type of the reported data into a serial peripheral interface protocol through a built-in optical fiber module; The first transmission module 403 is used to send the reported data from the built-in optical fiber module to the domain control module using the serial peripheral interface protocol; The second transmission module 404 is used to send the control instruction to the electronic control unit through the external optical fiber module.

[0064] Specifically, the above-mentioned vehicle-mounted communication device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned vehicle-mounted communication method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0065] Figure 5 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 5 As shown, the electronic device may include: a processor 810, a communications interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communications interface 820 and the memory 830 communicate with each other via the communication bus 840. The processor 810 may call the logic instructions in the memory 830 to execute the vehicle communication method, which includes: Obtaining reported data sent by the electronic control unit from an external optical fiber module through optical fiber; Converting the protocol type of the reported data into a serial peripheral interface protocol through a built-in optical fiber module; The reported data is sent from the built-in optical fiber module to the domain control module using the serial peripheral interface protocol; The reported data is sent to the display screen module for display through the domain control module.

[0066] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0067] On the other hand, the present invention further provides a computer program product, the computer program product includes a computer program, the computer program can be stored in a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the vehicle communication method provided by the above methods, the method includes: Obtaining reported data sent by the electronic control unit from an external optical fiber module through optical fiber; Converting the protocol type of the reported data into a serial peripheral interface protocol through a built-in optical fiber module; The reported data is sent from the built-in optical fiber module to the domain control module using the serial peripheral interface protocol; The reported data is sent to the display screen module for display through the domain control module.

[0068] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the vehicle-mounted communication method provided by the above methods is implemented, and the method includes: Obtaining reported data sent by the electronic control unit from an external optical fiber module through optical fiber; Converting the protocol type of the reported data into a serial peripheral interface protocol through a built-in optical fiber module; The reported data is sent from the built-in optical fiber module to the domain control module using the serial peripheral interface protocol; The reported data is sent to the display screen module for display through the domain control module.

[0069] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0070] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle-mounted control system, characterized in that: include: Display screen module, intelligent driving domain controller, external optical fiber module and at least one electronic control unit; the intelligent driving domain controller includes a built-in optical fiber module and a domain control module; The display screen module is connected to the domain control module via a wire; The domain control module is connected to the built-in optical fiber module through a wire; the domain control module and the built-in optical fiber module communicate with each other using a serial peripheral interface protocol; The built-in optical fiber module is connected to the external optical fiber module via an optical fiber; the built-in optical fiber module and the external optical fiber module communicate with each other using a serial peripheral interface protocol; The external optical fiber modules are connected to the at least one electronic control unit through wires.

2. The vehicle-mounted control system according to claim 1, characterized in that: The domain control module and the display screen module communicate using the I2C protocol.

3. The vehicle-mounted control system according to claim 1, characterized in that: The external optical fiber module includes at least one of the following modules: I2C driver module; the I2C driver module is used to process I2C protocol data; CAN driver module; the CAN driver module is used to process CAN protocol data; CANFD driver module; the CANFD driver module is used to process CANFD protocol data; Ethernet driver module; The Ethernet driver module is used to process Ethernet protocol data.

4. The vehicle-mounted control system according to claim 3, characterized in that: The external optical fiber module communicates with an electronic control unit using one of the following protocols: I2C protocol; CAN protocol; CANFD protocol; Ethernet protocol.

5. A vehicle-mounted communication method based on the vehicle-mounted control system according to any one of claims 1 to 4, characterized in that: include: Obtaining reported data sent by the electronic control unit from an external optical fiber module through optical fiber; Converting the protocol type of the reported data into a serial peripheral interface protocol through a built-in optical fiber module; The reported data is sent from the built-in optical fiber module to the domain control module using the serial peripheral interface protocol; The reported data is sent to the display screen module for display through the domain control module.

6. The vehicle-mounted communication method according to claim 5, characterized in that: The method further comprises: Acquiring a control instruction input by a user through the display screen module; Converting the protocol type of the control instruction into a serial peripheral interface protocol; The control instruction is sent from the domain control module to the built-in optical fiber module using the serial peripheral interface protocol; Performing protocol conversion via the built-in optical fiber module and sending control instructions to the external optical fiber module via optical fiber; The control instruction is sent to the electronic control unit through the external optical fiber module.

7. A vehicle-mounted communication device, characterized in that: include: An acquisition module, used for acquiring the reported data sent by the electronic control unit from the external optical fiber module through an optical fiber; A protocol conversion module, used for converting the protocol type of the reported data into a serial peripheral interface protocol through a built-in optical fiber module; A first transmission module, used to send the reported data from the built-in optical fiber module to the domain control module using the serial peripheral interface protocol; The second transmission module is used to send the control instruction to the electronic control unit through the external optical fiber module.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the in-vehicle communication method according to any one of claims 5 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the in-vehicle communication method according to any one of claims 5 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the in-vehicle communication method according to any one of claims 5 to 6 is implemented.

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