Vehicle controller area network communication circuit and control method thereof

Abstract

The invention discloses a vehicle controller area network communication circuit and a control method thereof. The vehicle controller local area network communication circuit comprises a main control chip, a first controller local area network communication module and a second controller local area network communication module, and the main control chip is connected with the first controller local area network communication module and the second controller local area network communication module through wires; the first controller local area network communication module is used for communicating with first equipment of a first controller local area network of the vehicle; the second controller area network communication module is configured to communicate with a second device of a second controller area network of the vehicle. According to the invention, the main control chip is connected with the two CAN communication modules, and the two different CAN communication modules are connected to different CAN networks, so that the functions of a related control system are expanded, unvarnished transmission filtering of message information is realized, and the problem that redundant information is transmitted in messages in the same path is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle controller local area network communication circuit, a control method for the vehicle controller local area network communication circuit, an electronic device, a storage medium, and a computer program product. Background Art

[0002] The chassis control systems of existing vehicles, especially electric vehicles, generally communicate and transmit messages between various chassis control systems by controlling a single-channel Controller Area Network (CAN) communication network. Each system transmits information on the same network, utilizing the special characteristics of CAN communication to achieve the transmission of the message information required by each system.

[0003] However, the existing control system and communication network have limitations for the corresponding designed hardware circuits, making it impossible to expand other control modules. In addition, the messages transmitted in the same CAN communication network only work for some systems. If you want to retrieve additional required message information from the CAN communication network, you need to add corresponding communication nodes and transceiver hardware. Summary of the Invention

[0004] Based on this, it is necessary to provide a vehicle controller local area network communication circuit, a control method for a vehicle controller local area network communication circuit, an electronic device, a storage medium and a computer program product to address the technical problems that the existing technology cannot expand other control modules and transmits redundant information in the same message.

[0005] The present invention provides a vehicle controller area network communication circuit, comprising: a main control chip, a first controller area network communication module and a second controller area network communication module, wherein the main control chip is connected to the first controller area network communication module and the second controller area network communication module respectively through wires;

[0006] The first controller area network communication module is used to communicate with a first device of a first controller area network of the vehicle;

[0007] The second controller area network communication module is used to communicate with a second device in a second controller area network of the vehicle.

[0008] Furthermore, it also includes a remote control transmitting module and a first wireless communication module, the first wireless communication module is connected to the main control chip through a wire, and the first wireless communication module is wirelessly connected to the remote control transmitting module.

[0009] Furthermore, the remote control transmitting module includes: a joystick circuit, a signal processing chip and a second wireless communication module, the joystick circuit is connected to the signal processing chip through a wire, the second wireless communication module is connected to the signal processing chip through a wire, and the second wireless communication module is wirelessly connected to the first wireless communication module.

[0010] Furthermore, the first controller area network communication module includes: a first controller area network transceiver chip, which is connected to the main control chip; the second controller area network communication module includes: a second controller area network transceiver chip, which is connected to the main control chip.

[0011] Further:

[0012] The first controller area network communication module further includes: a first common mode filter, wherein a first output end of the first controller area network transceiver chip is connected to a first common mode filter first output end of the first common mode filter, a second output end of the first controller area network transceiver chip is connected to a first common mode filter second output end of the first common mode filter, and the first output end of the first common mode filter and the second output end of the first common mode filter are respectively connected to the main control chip;

[0013] The second controller area network communication module further includes: a second common mode filter, wherein the first output end of the second controller area network transceiver chip is connected to the first output end of the second common mode filter of the second common mode filter, the second output end of the second controller area network transceiver chip is connected to the second output end of the second common mode filter of the second common mode filter, and the first output end of the second common mode filter and the second output end of the second common mode filter are respectively connected to the main control chip.

[0014] Going further:

[0015] A first circuit protection module is connected between the first output end of the first common-mode filter and the second output end of the first common-mode filter, the first output end of the first common-mode filter is grounded via a first capacitor, and the second output end of the first common-mode filter is grounded via a second capacitor;

[0016] A second circuit protection module is connected between the first output end of the second common-mode filter and the second output end of the second common-mode filter. The first output end of the second common-mode filter is grounded through a first capacitor, and the second output end of the second common-mode filter is grounded through a second capacitor.

[0017] The present invention provides a control method for a vehicle controller local area network communication circuit as described above, comprising:

[0018] receiving a first message from the first controller area network communication module, detecting a destination device of the first message, and sending the first message to the second controller area network communication module if the destination device of the first message is a second device of a second controller area network;

[0019] A second message is received from the second controller area network communication module, a destination device of the second message is detected, and if the destination device of the second message is the first device of the first controller area network, the second message is sent to the first controller area network communication module.

[0020] The present invention provides an electronic device, comprising:

[0021] at least one processor; and,

[0022] a memory communicatively connected to at least one of the processors; wherein,

[0023] The memory stores instructions that can be executed by at least one of the processors. The instructions are executed by at least one of the processors to enable the at least one processor to execute the control method of the vehicle controller area network communication circuit as described above.

[0024] The present invention provides a storage medium, which stores computer instructions. When a computer executes the computer instructions, it is used to execute all steps of the control method of the vehicle controller local area network communication circuit as described above.

[0025] The present invention provides a computer program product, comprising a computer program / instruction, which, when executed by a processor, implements the control method of the vehicle controller local area network communication circuit as described above.

[0026] The present invention expands the functionality of the control system by connecting the main control chip to two CAN communication modules, each of which is connected to a different CAN network. By connecting the two CAN communication modules on the main control chip to different CAN networks, transparent transmission and filtering of message information are achieved, reducing the problem of redundant information being transmitted in the same message. Furthermore, the present invention connects the two CAN communication modules on the main control chip to different CAN networks, utilizing the mutual non-interference property of the two CAN communication modules to prevent the different connected CAN networks from interfering with each other when transmitting information. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a vehicle controller local area network communication circuit according to an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of a vehicle controller area network communication circuit according to another embodiment of the present invention;

[0029] Figure 3 A schematic diagram of a vehicle controller area network communication circuit as an example of the present invention;

[0030] Figure 4 This is the CAN communication schematic diagram;

[0031] Figure 5 This is the CAN communication circuit diagram;

[0032] Figure 6 This is a schematic diagram of a 12V to 5V step-down circuit according to an example of the present invention;

[0033] Figure 7 This is a schematic diagram of a 5V to 3.3V step-down circuit according to an example of the present invention;

[0034] Figure 8 This is a schematic diagram of the main control chip circuit of an example of the present invention;

[0035] Figure 9 This is a circuit diagram of a first wireless communication module according to an example of the present invention;

[0036] Figure 10 This is a schematic diagram of a remote control transmitter module according to another embodiment of the present invention;

[0037] Figure 11 This is a circuit diagram of a remote control transmitter module according to an example of the present invention;

[0038] Figure 12 This is a circuit diagram of a first controller area network communication module according to an embodiment of the present invention;

[0039] Figure 13 This is a circuit diagram of a second controller area network communication module according to an embodiment of the present invention;

[0040] Figure 14 This is a flowchart of a method for controlling a vehicle controller area network communication circuit according to an embodiment of the present invention;

[0041] Figure 15 The figure is a schematic diagram of the hardware structure of an electronic device of the present invention.

[0042] Marking Description

[0043] 1. Main control chip; 2. First controller area network communication module; 21. First controller area network transceiver chip; 22. First common-mode filter; 221. First output terminal of first common-mode filter; 222. Second output terminal of first common-mode filter; 23. First circuit protection module; 24. First capacitor; 25. Second capacitor; 26. First resistor; 27. First switch; 3. Second controller area network communication module; 31. Second controller area network transceiver chip; 32. Second common-mode filter; 321. First output terminal of second common-mode filter; 322. Second output terminal of second common-mode filter; 33. Second circuit protection module; 34. Third capacitor; 35. Fourth capacitor; 36. Second resistor; 37. Second switch; 4. Remote control transmitter module; 41. Joystick circuit; 42. Signal processing chip; 43. Second wireless communication module; 5. First wireless communication module; 6. First controller local area network; 61. First device; 7. Second controller local area network; 71. Second device; 8. CAN device; 81. CAN controller; 82. CAN transceiver; 9. CAN network bus. DETAILED DESCRIPTION

[0044] The following further describes specific embodiments of the present invention with reference to the accompanying drawings. Like components are denoted by like reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0045] like Figure 1 FIG. 1 shows a vehicle controller area network communication circuit according to an embodiment of the present invention, comprising: a main control chip 1, a first controller area network communication module 2, and a second controller area network communication module 3. The main control chip 1 is connected to the first controller area network communication module 2 and the second controller area network communication module 3 via wires.

[0046] The first CAN communication module 2 is used to communicate with a first device 61 of a first CAN 6 of the vehicle;

[0047] The second CAN communication module 3 is configured to communicate with a second device 71 of a second CAN 7 of the vehicle.

[0048] Specifically, the controller area network is a CAN (Controller Area Network) communication network. The main control chip 1 has multiple CAN interfaces, which are connected to the first controller area network communication module 2 and the second controller area network communication module 3 respectively.

[0049] The first CAN communication module 2 is used to communicate with the first device 61 of the first CAN 6 of the vehicle, and the second CAN communication module 3 is used to communicate with the second device 71 of the second CAN 7 of the vehicle.

[0050] The first controller area network 6 is independent of the second controller area network 7. Figure 3 As shown, as an example, the first controller local area network communication module 2 is used to communicate with multiple devices of the vehicle's wire-controlled chassis. The multiple devices of the wire-controlled chassis are located in the first controller local area network 6. The multiple devices of the wire-controlled chassis include: Electronic Hydraulic Brake (EHB) 611, Electronic Park Brake (EPB) 612, Motor Control Unit (MCU) 613, Electric Power Steering (EPS) 614, etc.

[0051] The second CAN communication module 3 is used to communicate with the EPB, mode switching unit, emergency stop control unit and other devices of the second CAN 7 .

[0052] The first controller area network communication module 2 sends and receives messages of the first controller area network, the second controller area network communication module 3 receives messages of the second controller area network, and the main control chip 1 forwards the messages.

[0053] like Figure 4 and Figure 5 The figure shows the CAN communication principle, in which a CAN device 8 has a built-in CAN controller 81 and is connected to a CAN transceiver 82 via a transmission line (TX) and a reception line (RX). The CAN transceiver 82 is connected to the CAN_H line and CAN_L line of the CAN network bus 9 to communicate with the CAN network bus 9. The CAN device 8 can be the first device 61 or the second device 71. The CAN network bus 9 can be the bus of the first controller area network 6 or the second controller area network 7.

[0054] The present invention expands the functionality of the control system by connecting the main control chip to two CAN communication modules, each of which is connected to a different CAN network. By connecting the two CAN communication modules on the main control chip to different CAN networks, transparent transmission and filtering of message information are achieved, reducing the problem of redundant information being transmitted in the same message. Furthermore, the present invention connects the two CAN communication modules on the main control chip to different CAN networks, utilizing the mutual non-interference property of the two CAN communication modules to prevent the different connected CAN networks from interfering with each other when transmitting information.

[0055] like Figure 2 FIG2 is a schematic diagram of a vehicle controller area network communication circuit according to another embodiment of the present invention, comprising: a main control chip 1, a first controller area network communication module 2, a second controller area network communication module 3, a remote control transmitter module 4, and a first wireless communication module 5. The main control chip 1 is connected to the first controller area network communication module 2 and the second controller area network communication module 3 via wires.

[0056] The first controller area network communication module 2 is used to communicate with the device of the first controller area network of the vehicle;

[0057] The second controller area network communication module 3 is used to communicate with the device of the second controller area network of the vehicle;

[0058] The first wireless communication module 5 is connected to the main control chip 1 via a wire, and the first wireless communication module 5 is connected to the remote control transmitting module 4 via wireless communication.

[0059] This embodiment provides a dual CAN communication receiver circuit for transparent transmission of messages.

[0060] In some embodiments, the vehicle controller area network communication circuit further includes: a power supply circuit.

[0061] Among them, the power supply circuit mainly provides corresponding power supply voltage for other modules, including Figure 6 The 12V to 5V step-down circuit shown in the figure and Figure 7 The 5V to 3.3V reduction circuit shown in the figure. The main functional modules include: the first controller-LAN communication module 2 and the second controller-LAN communication module 3, which use 5V voltage; the main control chip 1, the remote control transmitter module 4, the first wireless communication module 5, and the remaining simple circuits use 3.3V voltage. The main control chip 1 adopts a modular design, using the STMicroelectronics STM32F407 core board, which also has its own power supply circuit. The power supply receives external power, CAN, and 232 signals through the socket, which are then converted into output signals by the various module circuits on the receiving board and transmitted.

[0062] The remote control transmitting module 4 and the first wireless communication module 5 are connected to each other by wireless communication, wherein the first wireless communication module 5 is directly connected to the main control chip 1 through a wire.

[0063] Figure 8The main control chip circuit diagram of an example of the present invention is shown. The main control chip includes a first portion U2 and a second portion U3. The first portion U2 is connected to the first controller area network communication module 2, and the second portion U3 is connected to the second controller area network communication module 3. The second portion U3 is also connected to the first wireless communication module 5.

[0064] In some embodiments, the first wireless communication module 5 is a LORA circuit module (Long Range Module). This module is a wireless communication module that can be enabled by setting corresponding parameters. The remote control transmitter module 4 also includes a wireless communication module, such as a LORA circuit module. Figure 9 FIG2 is a circuit diagram of a first wireless communication module according to an embodiment of the present invention, wherein chip U8 is a chip of a LORA circuit module.

[0065] Among them, the remote control transmitting module 4 is used to transmit remote control control information. The remote control transmitting module 4 transmits the information to the first wireless communication module 5 through wireless transmission. The first wireless communication module 5 passes the received information to the main control chip 1, which is transmitted by the main control chip 1 to the first controller LAN communication module 2, and then transmitted by the first controller LAN communication module 2 to the first controller LAN device of the vehicle.

[0066] In some embodiments, the first controller LAN communication module 2 is connected to the device that moves related to the chassis, and the remote control transmitting module 4 transmits some information that controls the chassis-related movement to the main control chip 1, and the main control chip 1 transmits it to the device that moves related to the chassis via the first controller LAN communication module 2.

[0067] The circuit in this embodiment comprises a receiver and communication conversion circuit. By adding a remote control transmitter module, the functionality of the control system is expanded, enabling remote control of chassis-related motion. By adjusting the circuit structure and optimizing its functionality within the existing communication architecture, this embodiment implements multiple message transmission and protocol conversion to meet the needs of practical applications.

[0068] In one embodiment, the remote control transmitting module 4 includes: a joystick circuit 41, a signal processing chip 42 and a second wireless communication module 43. The joystick circuit 41 is connected to the signal processing chip 42 via a wire, the second wireless communication module 43 is connected to the signal processing chip 42 via a wire, and the second wireless communication module 43 is wirelessly connected to the first wireless communication module 5.

[0069] Specifically, if Figure 10As shown, the remote control transmitter module 4 includes a joystick circuit 41, a signal processing chip 42, and a second wireless communication module 43. The joystick circuit 41 outputs a control signal to the signal processing chip 42. The signal processing chip 42 forwards the control signal to the second wireless communication module 43, which wirelessly forwards the control signal to the first wireless communication module 5. The control signal is then forwarded to the first controller area network communication module 2 via the main control chip 1 and transmitted to the relevant devices in the first controller area network.

[0070] Preferably, the second wireless communication module 43 and the first wireless communication module 5 are both LoRa modules. In actual use, it is necessary to match the two corresponding LoRa modules, then collect the information required by each, and then convert it into the data required in the actual calculation and then transmit it. The LoRa module will mainly communicate with the first controller local area network communication module 2, and use it to transmit relevant message information. Therefore, it is also necessary to operate to convert the LoRa information and the CAN information into each other, and then they can communicate with each other. The conversion process is mainly realized by software programming of the two boards.

[0071] This embodiment receives control information through the joystick circuit and transmits it wirelessly through the wireless communication module, which makes the transmission convenient and not restricted by location.

[0072] In one embodiment, the first controller area network communication module 2 includes: a first controller area network transceiver chip 21, and the first controller area network transceiver chip 21 is connected to the main control chip 1; the second controller area network communication module 3 includes: a second controller area network transceiver chip 31, and the second controller area network transceiver chip 31 is connected to the main control chip 1.

[0073] Specifically, if Figure 12 and Figure 13 As shown, the main components of the first controller area network communication module 2 and the second controller area network communication module 3 are transceiver chips and connected resistors, capacitors and other components. Their main function is to connect to the corresponding CAN communication pins of the main control chip 1 to achieve corresponding communication functions.

[0074] In this embodiment, the transceiver chips of the first controller area network communication module 2 and the second controller area network communication module 3 are directly connected to the main control chip 1 to form a two-way CAN, which can complete the corresponding functions without the use of an additional chip. Utilizing the inherent characteristics of the CAN communication network, the required information can be filtered out during the reception process, and the relevant control logic can be programmed into the chip to control the storage, transmission, and reception of information, so that the message is transmitted in the required manner and logic. Because the two CAN channels within the chip can control the information they receive through internal logic during communication, the message information transmitted by the chassis, for example, can be transmitted separately in the circuits connected to the two CAN channels, thereby improving the efficiency of communication and making the transmission and reception logic clearer.

[0075] In one embodiment:

[0076] The first controller area network communication module 2 further includes: a first common mode filter 22, wherein a first output end of the first controller area network transceiver chip 21 is connected to a first common mode filter first output end 221 of the first common mode filter 22, a second output end of the first controller area network transceiver chip 21 is connected to a first common mode filter second output end 222 of the first common mode filter 22, and the first common mode filter first output end 221 and the first common mode filter second output end 222 are respectively connected to the main control chip 1;

[0077] The second controller area network communication module 3 also includes: a second common mode filter 32, the first output end of the second controller area network transceiver chip 31 is connected to the second common mode filter first output end 321 of the second common mode filter 32, the second output end of the second controller area network transceiver chip 31 is connected to the second common mode filter second output end 322 of the second common mode filter 32, and the second common mode filter first output end 321 and the second common mode filter second output end 322 are respectively connected to the main control chip 1.

[0078] Specifically, if Figure 12 and Figure 13 As shown, the output ends of the first CAN transceiver chip 21 and the second CAN transceiver chip 31 are respectively output to the main control chip 1 after passing through the first common mode filter 22 and the second common mode filter 32 .

[0079] In this embodiment, the output ends of the first CAN transceiver chip and the second CAN transceiver chip are respectively output through common mode filters, thereby filtering the received signals and reducing noise.

[0080] In one embodiment:

[0081] A first circuit protection module 23 is connected between the first output end 221 of the first common-mode filter and the second output end 222 of the first common-mode filter. The first output end 221 of the first common-mode filter is grounded via a first capacitor 24, and the second output end 222 of the first common-mode filter is grounded via a second capacitor 25.

[0082] A second circuit protection module 33 is connected between the first output end 321 of the second common-mode filter and the second output end 322 of the second common-mode filter. The first output end 321 of the second common-mode filter is grounded through a third capacitor 34, and the second output end 322 of the second common-mode filter is grounded through a fourth capacitor 35.

[0083] Specifically, if Figure 12 and Figure 13 As shown, the first circuit protection module 23 is connected between the first common mode filter first output end 221 and the first common mode filter second output end 222 , and the second circuit protection module 33 is connected between the second common mode filter first output end 321 and the second common mode filter second output end 322 .

[0084] In some embodiments, the first circuit protection module 23 and the second circuit protection module 33 are electrostatic discharge tubes (ESD) or transient voltage suppressors (TVS).

[0085] This embodiment protects the circuit by adding a circuit protection module.

[0086] In some embodiments, a first resistor 26 and a first switch 27 are connected between the first common mode filter first output terminal 221 and the first common mode filter second output terminal 222, so as to facilitate circuit testing without removing a terminal resistor.

[0087] In some embodiments, a second resistor 36 and a second switch 37 are connected between the first output terminal 321 of the second common-mode filter and the second output terminal 322 of the second common-mode filter, so as to facilitate circuit testing without removing a terminal resistor.

[0088] like Figure 14 FIG2 is a flowchart of a control method for a vehicle controller area network communication circuit according to an embodiment of the present invention, comprising:

[0089] Step S1401: receiving a first message from the first controller area network communication module 2, detecting a destination device of the first message, and if the destination device of the first message is the second device 71 of the second controller area network 7, sending the first message to the second controller area network communication module 3;

[0090] Step S1402 : Receive a second message from the second controller area network communication module 3 , detect the destination device of the second message, and if the destination device of the second message is the first device 61 of the first controller area network 6 , send the second message to the first controller area network communication module 2 .

[0091] Specifically, the present invention can be applied to electronic devices with processing capabilities, such as a main control chip 1 of a vehicle controller area network communication circuit.

[0092] This embodiment is a control method for the aforementioned vehicle controller local area network communication circuit.

[0093] The main control chip 1 executes step S1401 to detect the first message received from the first controller area network communication module 2 and determine the destination device of the first message.

[0094] If the destination device of the first message is the second device 71 of the second controller area network 7 , the first message is sent to the second controller area network communication module 3 .

[0095] At the same time, the main control chip 1 executes step S1402 to detect the second message received from the second controller LAN communication module 3 and determine the destination device of the second message.

[0096] If the destination device of the second message is the first device 61 of the first controller area network 6 , the second message is sent to the first controller area network communication module 2 .

[0097] The chip used in the present invention has two built-in CAN channels, eliminating the need for additional chips to perform the corresponding functions. Leveraging the inherent characteristics of the CAN communication network, the required information can be filtered out during reception. Furthermore, the chip can be programmed with relevant control logic to control the storage, transmission, and reception of information, thereby enabling messages to be transmitted in the desired manner and logic. Because the two CAN channels within the chip can control the information they receive through internal logic during communication, message information transmitted from the chassis can be transmitted separately through the circuits connected to the two CAN channels, improving communication efficiency and making the transmission and reception logic clearer.

[0098] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0099] like Figure 15 FIG. 1 is a schematic diagram of the hardware structure of an electronic device of the present invention, comprising:

[0100] at least one processor 1501; and,

[0101] A memory 1502 in communication with at least one of the processors 1501; wherein,

[0102] The memory 1502 stores instructions that can be executed by at least one of the processors. The instructions are executed by at least one of the processors to enable the at least one processor to execute the control method of the vehicle controller area network communication circuit as described above.

[0103] Figure 15 A processor 1501 is taken as an example.

[0104] The electronic device may further include an input device 1503 and a display device 1504 .

[0105] The processor 1501, the memory 1502, the input device 1503 and the display device 1504 may be connected via a bus or other means, with the figure taking the bus connection as an example.

[0106] The memory 1502 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs, and modules, such as the program instructions / modules corresponding to the control method of the vehicle controller area network communication circuit in the embodiment of the present application, for example, Figure 14 The processor 1501 executes the non-volatile software programs, instructions and modules stored in the memory 1502 to perform various functional applications and data processing, that is, to implement the control method of the vehicle controller area network communication circuit in the above embodiment.

[0107] Memory 1502 may include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the control method for the vehicle controller area network communication circuit. Furthermore, memory 1502 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state memory device. In some embodiments, memory 1502 may optionally include memory remotely located relative to processor 1501. Such remote memory may be connected to a device executing the control method for the vehicle controller area network communication circuit via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0108] The input device 1503 can receive user clicks and generate signal input related to user settings and function control of the vehicle controller area network communication circuit control method. The display device 1504 can include a display device such as a display screen.

[0109] The one or more modules are stored in the memory 1502 and, when executed by the one or more processors 1501 , execute the control method of the vehicle controller area network communication circuit in any of the above method embodiments.

[0110] The chip used in the present invention has two built-in CAN channels, eliminating the need for additional chips to perform the corresponding functions. Leveraging the inherent characteristics of the CAN communication network, the required information can be filtered out during reception. Furthermore, the chip can be programmed with relevant control logic to control the storage, transmission, and reception of information, thereby enabling messages to be transmitted in the desired manner and logic. Because the two CAN channels within the chip can control the information they receive through internal logic during communication, message information transmitted from the chassis can be transmitted separately through the circuits connected to the two CAN channels, improving communication efficiency and making the transmission and reception logic clearer.

[0111] An embodiment of the present invention provides a storage medium storing computer instructions. When a computer executes the computer instructions, the storage medium is used to execute all steps of the control method of the vehicle controller local area network communication circuit as described above.

[0112] In the context of the present disclosure, a storage medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or apparatus. The storage medium may be a machine-readable signal medium or a machine-readable storage medium. Alternatively, the storage medium may be a non-transitory computer-readable storage medium, for example, a non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device.

[0113] An embodiment of the present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the control method of the vehicle controller area network communication circuit as described above.

[0114] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A vehicle controller local area network communication circuit, characterized in that: include: A main control chip (1), a first controller local area network communication module (2), and a second controller local area network communication module (3), wherein the main control chip (1) is connected to the first controller local area network communication module (2) and the second controller local area network communication module (3) respectively via wires; The first controller area network communication module (2) is used to communicate with a first device (61) of a first controller area network (6) of the vehicle; The second controller area network communication module (3) is used to communicate with a second device (71) of a second controller area network (7) of the vehicle.

2. The vehicle controller area network communication circuit according to claim 1, characterized in that: It also includes a remote control transmitting module (4) and a first wireless communication module (5), wherein the first wireless communication module (5) is connected to the main control chip (1) via a wire, and the first wireless communication module (5) is wirelessly connected to the remote control transmitting module (4).

3. The vehicle controller area network communication circuit according to claim 2, characterized in that: The remote control transmitting module (4) comprises: a rocker circuit (41), a signal processing chip (42) and a second wireless communication module (43); the rocker circuit (41) is connected to the signal processing chip (42) via a wire; the second wireless communication module (43) is connected to the signal processing chip (42) via a wire; and the second wireless communication module (43) is wirelessly connected to the first wireless communication module (5).

4. The vehicle controller area network communication circuit according to claim 1, characterized in that: The first controller area network communication module (2) comprises: a first controller area network transceiver chip (21), the first controller area network transceiver chip (21) being connected to the main control chip (1); the second controller area network communication module (3) comprises: a second controller area network transceiver chip (31), the second controller area network transceiver chip (31) being connected to the main control chip (1).

5. The vehicle controller area network communication circuit according to claim 4, characterized in that: The first controller area network communication module (2) further comprises: a first common mode filter (22); a first output end of the first controller area network transceiver chip (21) is connected to a first common mode filter first output end (221) of the first common mode filter (22); a second output end of the first controller area network transceiver chip (21) is connected to a first common mode filter second output end (222) of the first common mode filter (22); and the first common mode filter first output end (221) and the first common mode filter second output end (222) are respectively connected to the main control chip (1); The second controller area network communication module (3) further comprises: a second common mode filter (32); the first output end of the second controller area network transceiver chip (31) is connected to the second common mode filter first output end (321) of the second common mode filter (32); the second output end of the second controller area network transceiver chip (31) is connected to the second common mode filter second output end (322) of the second common mode filter (32); the second common mode filter first output end (321) and the second common mode filter second output end (322) are respectively connected to the main control chip (1).

6. The vehicle controller area network communication circuit according to claim 5, characterized in that: A first circuit protection module (23) is connected between the first output end (221) of the first common-mode filter and the second output end (222) of the first common-mode filter, the first output end (221) of the first common-mode filter is grounded via a first capacitor (24), and the second output end (222) of the first common-mode filter is grounded via a second capacitor (25); A second circuit protection module (33) is connected between the first output end (321) of the second common-mode filter and the second output end (322) of the second common-mode filter; the first output end (321) of the second common-mode filter is grounded via a third capacitor (34); and the second output end (322) of the second common-mode filter is grounded via a fourth capacitor (35).

7. A method for controlling a vehicle controller area network communication circuit according to any one of claims 1 to 6, characterized in that: include: receiving a first message from the first controller area network communication module (2), detecting a destination device of the first message, and if the destination device of the first message is a second device (71) of a second controller area network (7), sending the first message to the second controller area network communication module (3); A second message is received from the second controller area network communication module (3), a destination device of the second message is detected, and if the destination device of the second message is the first device (61) of the first controller area network (6), the second message is sent to the first controller area network communication module (2).

8. An electronic device, characterized in that: include: at least one processor; as well as, a memory communicatively connected to at least one of the processors; wherein, The memory stores instructions that can be executed by at least one of the processors. The instructions are executed by at least one of the processors to enable the at least one processor to execute the control method of the vehicle controller area network communication circuit according to claim 7.

9. A storage medium, characterized in that: The storage medium stores computer instructions, and when a computer executes the computer instructions, it is used to execute all steps of the control method of the vehicle controller area network communication circuit as claimed in claim 7.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the control method of the vehicle controller area network communication circuit as claimed in claim 7 is implemented.

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