CN114755997A - Software refreshing method and device for vehicle - Google Patents
Software refreshing method and device for vehicle Download PDFInfo
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- CN114755997A CN114755997A CN202110767217.5A CN202110767217A CN114755997A CN 114755997 A CN114755997 A CN 114755997A CN 202110767217 A CN202110767217 A CN 202110767217A CN 114755997 A CN114755997 A CN 114755997A
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- dcan
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
The invention provides a software refreshing method and equipment for a vehicle, wherein the method comprises the following steps: when the external equipment carries out software refreshing operation on a DCAN controller of the vehicle-mounted diagnosis interface, the external equipment sends a configuration instruction to the DCAN controller; the communication mode between the DCAN controller and the external equipment is configured as CAN communication by default; the DCAN controller responds to the configuration instruction and switches the communication mode between the DCAN controller and the external equipment into CANFD communication; the external equipment refreshes the DCAN controller by software; when the software refreshing is finished, the DCAN controller switches the communication mode between the DCAN controller and the external equipment to CAN communication. When the DCAN needs to refresh the software, the CAN communication is switched to the CANFD communication, and the CAN communication is defaulted at other times, so that the configurability of a DCAN communication protocol is realized, the compatibility of DCAN external equipment is realized, and the efficiency of the DCAN refreshing software is improved.
Description
Technical Field
The invention relates to the technical field of vehicle software refreshing, in particular to a vehicle software refreshing method and device.
Background
With the increase of the number of the functions and the complexity of the electronic and electric appliances of the automobile, the software packages of the vehicle-mounted controllers are increased, so that the time consumption for software upgrading through the traditional CAN bus communication is longer and longer, and the requirement for quick upgrading is difficult to meet. Engineers have begun to design software upgrades to controllers via CANFD communication because CANFD has a high communication rate, but this requires that the DCAN connected to the vehicle OBD port also be upgraded to CANFD communication. However, the third-party equipment (such as vehicle management station detection equipment and the like) connected with the DCAN still adopts CAN communication, and the OBD port DCAN of the whole vehicle factory adopts the traditional CAN communication design, so that the OBD port DCAN CAN be well compatible with the external equipment of the OBD port, but the communication rate of the DCAN is limited, and the software refreshing efficiency through the DCAN cannot be improved.
Disclosure of Invention
In view of the foregoing problems, an object of the present invention is to provide a method and an apparatus for refreshing vehicle software, which can implement compatibility of DCAN external devices and improve efficiency of DCAN software refreshing.
In a first aspect, an embodiment of the present invention provides a method for refreshing software of a vehicle, including:
when an external device carries out software refreshing operation on a DCAN controller of a vehicle-mounted diagnosis interface, the external device sends a configuration instruction to the DCAN controller; the communication mode between the DCAN controller and the external equipment is configured as CAN communication by default;
the DCAN controller responds to the configuration instruction and switches the communication mode between the DCAN controller and the external equipment to CANFD communication;
the external equipment refreshes the DCAN controller by software;
and when the software refreshing is finished, the DCAN controller switches the communication mode between the DCAN controller and the external equipment to CAN communication.
As an improvement of the above, the method further comprises:
and when the DCAN controller completes CANFD communication or CAN communication switching, the external equipment controls the DCAN controller to restart.
As an improvement of the above solution, when the DCAN controller completes CANFD communication or CAN communication switching, the external device controls the DCAN controller to restart, and the external device controls the DCAN controller to restart, including:
When the DCAN controller completes CANFD communication or CAN communication switching, the external equipment sends a reset instruction to the DCAN controller;
the DCAN controller reboots in response to the reset instruction.
As an improvement of the above, the method further comprises:
the external equipment establishes CAN communication connection with the DCAN controller and sends a wake-up instruction to the DCAN controller;
and the DCAN controller responds to the wake-up instruction to carry out wake-up operation.
As a refinement of the above solution, the configuration instruction includes a diagnostic ID, a diagnostic service ID, and communication configuration information of the DCAN controller.
As an improvement of the above, the method further comprises:
according to the operation of the user on the external equipment, the external equipment carries out diagnosis application type identification; wherein the diagnostic application types include software refreshes and non-software refreshes.
As an improvement of the above, the method further comprises:
and when the external equipment carries out non-software refreshing operation on the DCAN controller, the external equipment executes a diagnosis application program.
In a second aspect, an embodiment of the present invention provides a software refreshing method for a vehicle, including:
The DCAN controller responds to a configuration instruction sent by an external device and switches the communication mode between the DCAN controller and the external device into CANFD communication; the configuration instruction is triggered when the external equipment carries out software refreshing operation on a DCAN controller of the vehicle-mounted diagnosis interface; the communication mode between the DCAN controller and the external equipment is initially configured to be CAN communication;
the DCAN controller responds to the software refreshing operation of the external equipment to perform software refreshing;
and when the software refreshing is finished, the DCAN controller switches the communication mode between the DCAN controller and the external equipment to CAN communication.
In a third aspect, an embodiment of the present invention provides a software refreshing method for a vehicle, including:
when an external device carries out software refreshing operation on a DCAN controller of a vehicle-mounted diagnosis interface, the external device sends a configuration instruction to the DCAN controller so that the DCAN controller switches the communication mode between the DCAN controller and the external device to CANFD communication; the communication mode between the DCAN controller and the external equipment is initially configured to be CAN communication;
and the external equipment carries out software refreshing on the DCAN controller so that when the DCAN controller finishes the software refreshing, the communication mode between the DCAN controller and the external equipment is switched to CAN communication.
In a fourth aspect, an embodiment of the present invention provides a software refreshing apparatus for a vehicle, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the software refreshing method for a vehicle according to claim 7 or 8 when executing the computer program.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: when external equipment carries out software refreshing operation on a DCAN controller of a vehicle-mounted diagnosis interface, the external equipment sends a configuration instruction to the DCAN controller; the communication mode between the DCAN controller and the external equipment is configured as CAN communication by default; the DCAN controller responds to the configuration instruction and switches the communication mode between the DCAN controller and the external equipment to CANFD communication; the external equipment refreshes the DCAN controller by software; and when the software refreshing is finished, the DCAN controller switches the communication mode between the DCAN controller and the external equipment to CAN communication. When the DCAN needs to refresh the software, the CAN communication is switched to the CANFD communication, and the CAN communication is defaulted at other times, so that the configurability of a DCAN communication protocol is realized, the compatibility of DCAN external equipment is realized, and the efficiency of the DCAN refreshing software is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method for refreshing software of a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a configuration instruction format according to an embodiment of the present invention;
FIG. 3 is a flowchart of a software refreshing method for a vehicle according to an embodiment of the present invention;
FIG. 4 is a flowchart of a software refreshing method for a vehicle according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a software refreshing apparatus for a vehicle according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Please refer to fig. 1, which is a flowchart illustrating a software refreshing method for a vehicle according to an embodiment of the present invention, the software refreshing method for a vehicle includes:
s1: when an external device carries out software refreshing operation on a DCAN controller of a vehicle-mounted diagnosis interface, the external device sends a configuration instruction to the DCAN controller; the communication mode between the DCAN controller and the external equipment is configured as CAN communication by default;
s2: the DCAN controller responds to the configuration instruction and switches the communication mode between the DCAN controller and the external equipment to CANFD communication;
s3: the external equipment refreshes the DCAN controller by software;
s4: and when the software refreshing is finished, the DCAN controller switches the communication mode between the DCAN controller and the external equipment to CAN communication.
In the embodiment of the invention, a vehicle-mounted diagnosis interface, namely DCAN of an OBD port defaults to CAN communication, when external equipment, such as equipment including design and development of a whole vehicle factory or third-party equipment, is connected with DCAN of the OBD port, the external equipment identifies whether the operation of a user on an input interface (such as a touch interface) of the external equipment is software refreshing operation, if so, the DCAN controller is controlled to be switched to CANFD communication and restarted, and then the external equipment performs corresponding software refreshing on the DCAN controller; and after the software refreshing is finished, controlling the DCAN controller to switch to CAN communication and restart again, and returning to the default CAN communication mode of the DCAN. According to the invention, only when software refreshing is required, the DCAN is switched from CAN communication to CAN FD communication, and the CAN communication is defaulted at other times, so that the configurability of a DCAN communication protocol is realized, the compatibility of DCAN external equipment is realized, and the efficiency of DCAN refreshing software is improved.
In an alternative embodiment, the method further comprises:
and when the DCAN controller completes CANFD communication or CAN communication switching, the external equipment controls the DCAN controller to restart.
Further, when the DCAN controller completes CANFD communication or CAN communication switching, the external device controls the DCAN controller to restart, and the external device controls the DCAN controller to restart, including:
when the DCAN controller completes CANFD communication or CAN communication switching, the external equipment sends a reset instruction to the DCAN controller;
the DCAN controller reboots in response to the reset instruction.
When the DCAN controller completes communication mode switching, feeding back corresponding successful switching information to the external equipment, so that the external equipment sends a reset instruction to the DCAN controller to control the DCAN controller to restart, thereby ensuring the communication stability.
In an alternative embodiment, the method further comprises:
the external equipment establishes CAN communication connection with the DCAN controller and sends a wake-up instruction to the DCAN controller;
and the DCAN controller responds to the wake-up instruction to carry out wake-up operation.
In the embodiment of the invention, when the external device is accessed to the OBD port of the vehicle, the external device sends a wakeup instruction to the DCAN controller to wake up the DCAN controller, and defaults to CAN communication, so that the DCAN of the OBD port of the vehicle CAN be compatible with various third-party devices connected with the DCAN.
In an alternative embodiment, the configuration instruction includes a diagnostic ID, a diagnostic service ID, and communication configuration information of the DCAN controller.
The configuration instructions mainly include a diagnostic ID, a diagnostic service ID, and communication configuration information of the DCAN controller. As shown in fig. 2, the Message ID is the diagnostic ID of the DCAN controller; SID service ID is said diagnostic service ID; the SID content includes communication configuration information and DID; wherein, SID and DID are service parameters defined by the whole vehicle factory. And the DCAN controller performs corresponding communication switching according to whether the value corresponding to the communication protocol in the configuration instruction is 0 or 1, if the value is 0, the DCAN controller switches to CAN communication, and if the value is 1, the DCAN controller switches to CAN FD communication.
In an alternative embodiment, the method further comprises:
according to the operation of the user on the external equipment, the external equipment carries out diagnosis application type identification; wherein the diagnostic application types include software refreshes and non-software refreshes.
In an alternative embodiment, the method further comprises:
and when the external equipment carries out non-software refreshing operation on the DCAN controller, the external equipment executes a diagnosis application program.
For example, taking an external device as a vehicle management detection device as an example, when a user selects a diagnosis application program on the vehicle management detection device, the vehicle management detection device may recognize that the diagnosis application program selected by the user belongs to software refreshing and non-software refreshing, and if the diagnosis application program is software refreshing, the DCAN controller is controlled to switch to CANFD communication, so as to improve software refreshing efficiency, otherwise, the diagnosis application program is directly executed under a CAN communication condition, so as to perform fault diagnosis, for example, reading a fault code.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: the invention CAN realize the configurability of DCAN communication protocol, namely realize the switching of DCAN between CAN and CANFD communication, thereby solving the compatibility problem of DCAN external equipment and improving the refreshing efficiency of DCAN software.
Example two
Referring to fig. 3, an embodiment of the present invention provides a method for refreshing software of a vehicle, including:
s11: the DCAN controller responds to a configuration instruction sent by an external device and switches the communication mode between the DCAN controller and the external device into CANFD communication; the configuration instruction is triggered when the external equipment carries out software refreshing operation on a DCAN controller of the vehicle-mounted diagnosis interface; the communication mode between the DCAN controller and the external equipment is initially configured to be CAN communication;
S12: the DCAN controller responds to the software refreshing operation of the external equipment to perform software refreshing;
s13: and when the software refreshing is finished, the DCAN controller switches the communication mode between the DCAN controller and the external equipment to CAN communication.
EXAMPLE III
Referring to fig. 4, an embodiment of the present invention provides a method for refreshing software of a vehicle, including:
s21: when an external device carries out software refreshing operation on a DCAN controller of a vehicle-mounted diagnosis interface, the external device sends a configuration instruction to the DCAN controller so that the DCAN controller switches the communication mode between the DCAN controller and the external device to CANFD communication; the communication mode between the DCAN controller and the external equipment is initially configured to be CAN communication;
s22: and the external equipment carries out software refreshing on the DCAN controller so that when the DCAN controller finishes the software refreshing, the communication mode between the DCAN controller and the external equipment is switched to CAN communication.
It should be noted that the principle and technical effect of the second embodiment and the third embodiment are the same as those of the first embodiment, and detailed description thereof is omitted.
Example four
Referring to fig. 5, the software refreshing apparatus for a vehicle according to an embodiment of the present invention includes at least one processor 11, such as a CPU, at least one network interface 14 or other user interface 13, a memory 15, and at least one communication bus 12, where the communication bus 12 is used for implementing connection communication between these components. The user interface 13 may optionally include a USB interface, and other standard interfaces, wired interfaces. The network interface 14 may optionally include a Wi-Fi interface as well as other wireless interfaces. The memory 15 may comprise a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 15 may optionally comprise at least one memory device located remotely from the aforementioned processor 11.
In some embodiments, memory 15 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:
an operating system 151, which contains various system programs for implementing various basic services and for processing hardware-based tasks;
and (5) a procedure 152.
Specifically, the processor 11 is configured to call the program 152 stored in the memory 15 to execute the software refreshing method of the vehicle according to the above embodiment, for example, step S11 shown in fig. 3. Alternatively, the processor implements the functions of the modules/units in the above device embodiments when executing the computer program.
Illustratively, the computer program may be partitioned into one or more modules/units that are stored in the memory and executed by the processor to implement the invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program in the software refreshing device of the vehicle.
The software refreshing device of the vehicle may be a computing device such as a VCU, ECU, BMS, etc. The software refreshing device of the vehicle may include, but is not limited to, a processor, a memory. It will be appreciated by those skilled in the art that the schematic is merely an example of a software refreshing apparatus for a vehicle and does not constitute a limitation of a software refreshing apparatus for a vehicle and may include more or fewer components than those shown, or some components in combination, or different components.
The Processor 11 may be a Microprocessor (MCU) Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 11 is the control center of the software refreshing apparatus of the vehicle, and various interfaces and lines are used to connect various parts of the software refreshing apparatus of the entire vehicle.
The memory 15 may be used to store the computer programs and/or modules, and the processor 11 implements various functions of the software refreshing apparatus of the vehicle by running or executing the computer programs and/or modules stored in the memory, and by calling up data stored in the memory. The memory 15 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, etc. Further, the memory 15 may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein the module/unit integrated by the software refreshing device of the vehicle can be stored in a computer readable storage medium if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments described above may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or 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 solution of this embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection therebetween, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A method of software refreshment for a vehicle, comprising:
When an external device carries out software refreshing operation on a DCAN controller of a vehicle-mounted diagnosis interface, the external device sends a configuration instruction to the DCAN controller; the communication mode between the DCAN controller and the external equipment is configured as CAN communication by default;
the DCAN controller responds to the configuration instruction and switches the communication mode between the DCAN controller and the external equipment to CANFD communication;
the external equipment refreshes the DCAN controller by software;
and when the software refreshing is finished, the DCAN controller switches the communication mode between the DCAN controller and the external equipment to CAN communication.
2. The software updating method for a vehicle according to claim 1, further comprising:
and when the DCAN controller completes CANFD communication or CAN communication switching, the external equipment controls the DCAN controller to restart.
3. The method for refreshing software of a vehicle according to claim 2, wherein when the DCAN controller completes CANFD communication or CAN communication handover, the external device controls the DCAN controller to restart, and the external device controls the DCAN controller to restart, comprising:
when the DCAN controller completes CANFD communication or CAN communication switching, the external equipment sends a reset instruction to the DCAN controller;
The DCAN controller reboots in response to the reset instruction.
4. The software updating method for a vehicle according to claim 1, further comprising:
the external equipment establishes CAN communication connection with the DCAN controller and sends a wake-up instruction to the DCAN controller;
and the DCAN controller responds to the wake-up instruction to carry out wake-up operation.
5. The software updating method for a vehicle according to claim 1, wherein the configuration command includes a diagnostic ID, a diagnostic service ID, and communication configuration information of the DCAN controller.
6. The software refreshing method of a vehicle according to any one of claims 1 to 5, characterized in that the method further comprises:
according to the operation of the user on the external equipment, the external equipment carries out diagnosis application type identification; wherein the diagnostic application types include software refreshes and non-software refreshes.
7. The software updating method for a vehicle according to claim 6, wherein said method further comprises:
and when the external equipment carries out non-software refreshing operation on the DCAN controller, the external equipment executes a diagnosis application program.
8. A method of refreshing software for a vehicle, comprising:
The DCAN controller responds to a configuration instruction sent by an external device and switches the communication mode between the DCAN controller and the external device into CANFD communication; the configuration instruction is triggered when the external equipment carries out software refreshing operation on a DCAN controller of the vehicle-mounted diagnosis interface; the communication mode between the DCAN controller and the external equipment is initially configured to be CAN communication;
the DCAN controller responds to the software refreshing operation of the external equipment to perform software refreshing;
and when the software refreshing is finished, the DCAN controller switches the communication mode between the DCAN controller and the external equipment to CAN communication.
9. A method of refreshing software for a vehicle, comprising:
when an external device carries out software refreshing operation on a DCAN controller of a vehicle-mounted diagnosis interface, the external device sends a configuration instruction to the DCAN controller so that the DCAN controller switches the communication mode between the DCAN controller and the external device to CANFD communication; the communication mode between the DCAN controller and the external equipment is initially configured to be CAN communication;
and the external equipment carries out software refreshing on the DCAN controller so that when the DCAN controller finishes the software refreshing, the communication mode between the DCAN controller and the external equipment is switched to CAN communication.
10. A software refreshing apparatus of a vehicle, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the software refreshing method of the vehicle according to claim 8 or 9 when executing the computer program.
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| CN202110767217.5A CN114755997A (en) | 2021-07-07 | 2021-07-07 | Software refreshing method and device for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110767217.5A CN114755997A (en) | 2021-07-07 | 2021-07-07 | Software refreshing method and device for vehicle |
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