Method and device for preventing DCDC CAN signal receiving and transmitting failure, vehicle, medium and product

Abstract

The invention discloses a method and device for preventing DCDC CAN signal receiving and transmitting failure, a vehicle, a medium and a product, and relates to the technical field of automobiles, and the method for preventing DCDC CAN signal receiving and transmitting failure comprises the following steps: detecting KL15 and CAN specific frame signals; when the signals of the KL15 and the CAN specific frame are detected, a CAN transceiver is configured; when the configuration of the CAN transceiver fails, recording the failure times, and re-configuring the CAN transceiver; when the failure frequency reaches a preset configuration frequency, the CAN transceiver is reset; and when the CAN transceiver is reset successfully, controlling the CAN transceiver to send a message. According to the method and the device, after the configuration of the CAN transceiver fails, the CAN transceiver is reset, so that the problem that the whole vehicle cannot be accessed to READY due to the fact that DCDC (Direct Current Direct Current) accidentally sends no message is solved.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a method, a device, a vehicle, a medium and a product for preventing DCDC CAN signal transmission and reception failure. Background Art

[0002] The customer's one-button start-up failed, and the vehicle could not be READY in the ON gear. After the vehicle was turned off and restarted, it still could not start, resulting in strong complaints from the customer.

[0003] After checking, it was found that no message was sent when DCDC was started. After checking the DCDC hardware and software, the hardware problem was eliminated and finally the abnormal operation status of the CAN transceiver was found.

[0004] The DSP controls the CAN transceiver through the serial port to wake up and sleep, and participates in signal interaction. The existing solution is only configured three times, and does not require readback, resulting in occasional no message being sent when the DCDC is started, and the vehicle cannot be READY. Summary of the invention

[0005] The main purpose of the present invention is to propose a method for preventing DCDC CAN signal transmission and reception failure, aiming to solve the problem that the existing solution is only configured three times and does not require readback, resulting in occasional no message being sent when DCDC is started and the entire vehicle cannot be READY.

[0006] To achieve the above object, the present invention proposes a method for preventing DCDC CAN signal transmission and reception failure, the method comprising:

[0007] Detect KL15 and CAN specific frame signals;

[0008] When the KL15 and CAN specific frame signals are detected, the CAN transceiver is configured;

[0009] When the configuration of the CAN transceiver fails, recording the number of configuration failures and reconfiguring the CAN transceiver;

[0010] When the number of configuration failures reaches a preset number of configuration failures, resetting the CAN transceiver;

[0011] When the CAN transceiver is reset successfully, the CAN transceiver is controlled to send messages.

[0012] In one embodiment, when the number of configuration failures reaches a preset number of configuration failures, after the step of resetting the CAN transceiver, the step further includes:

[0013] When the CAN transceiver fails to be reset, the number of reset failures is recorded, and the CAN transceiver is reset again;

[0014] When the number of reset failures reaches a preset number of resets, the controller restarts;

[0015] When the controller restarts successfully, the CAN transceiver is controlled to send messages.

[0016] In one embodiment, when the CAN transceiver fails to be reset, the step of recording the number of reset failures and restarting the CAN transceiver further includes:

[0017] When the controller fails to restart, the number of restart failures is recorded, and the controller restart steps are re-executed;

[0018] When the number of failed restarts of the controller reaches a preset number of restarts, the controller uses a watchdog to perform a power-off reset;

[0019] When the controller is powered off and reset successfully, the CAN transceiver is controlled to send messages.

[0020] In one embodiment, when the number of failed restarts of the controller reaches a preset number, after the step of using a watchdog to perform a power-off reset, the step further includes:

[0021] When the controller fails to be reset by power-off, the operation of power-off reset by using the watchdog is executed again.

[0022] In one embodiment, the step of configuring the CAN transceiver when the KL15 and CAN specific frame signals are detected further includes:

[0023] Detect the working status of CAN transceiver;

[0024] If the working status of the CAN transceiver is consistent with the configuration, the configuration is determined to be successful;

[0025] If the working status of the CAN transceiver does not match the configuration, the configuration is determined to have failed.

[0026] In one embodiment, when the number of configuration failures reaches a preset number of configuration failures, after the step of resetting the CAN transceiver, the step further includes:

[0027] Detect the working status of CAN transceiver;

[0028] If the CAN transceiver operating state is consistent with the reset, the reset is determined to be successful;

[0029] If the CAN transceiver operating state does not match the reset, the reset is determined to have failed.

[0030] In addition, to achieve the above-mentioned purpose, the present application also proposes a device for preventing DCDC CAN signal transmission and reception failure, the device comprising:

[0031] Detection module, used to detect KL15 and CAN specific frame signals;

[0032] A driver module, used for configuring and resetting the CAN transceiver;

[0033] A calculation module, used to record the number of failures;

[0034] The control module is used to control the CAN transceiver to send messages.

[0035] In addition, to achieve the above-mentioned purpose, the present application also proposes a vehicle, which can implement the steps of the method for preventing the failure of DCDC CAN signal transmission and reception as described above.

[0036] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the method for preventing the failure of DCDC CAN signal transmission and reception are implemented as described above.

[0037] In addition, to achieve the above-mentioned purpose, the present application also proposes a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the above-mentioned method for preventing DCDC CAN signal transmission and reception failure are implemented.

[0038] The present invention discloses a method, device, vehicle, medium and product for preventing DCDC CAN signal transceiver from failing, and relates to the field of automobile technology. The disclosed method for preventing DCDC CAN signal transceiver from failing includes: detecting KL15 and CAN specific frame signals; configuring the CAN transceiver when detecting KL15 and CAN specific frame signals; recording the number of failures when the CAN transceiver configuration fails, and reconfiguring the CAN transceiver; resetting the CAN transceiver when the number of failures reaches a preset configuration number; and controlling the CAN transceiver to send a message when the CAN transceiver is reset successfully. The present application solves the problem that the vehicle cannot be READY due to occasional DCDC without a message by resetting the CAN transceiver after the CAN transceiver configuration fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0040] Figure 1 This is a flow chart of the first embodiment of the screen display method of the present application;

[0041] Figure 2 This is a flow chart of the second embodiment of the screen display method of the present application;

[0042] Figure 3 This is a flowchart of the third embodiment of the screen display method of the present application;

[0043] Figure 4 This is a flowchart of a fourth embodiment of the screen display method of the present application;

[0044] Figure 5 This is a flowchart of the fifth embodiment of the screen display method of the present application;

[0045] Figure 6 It is a flowchart diagram of the sixth embodiment of the screen display method of the present application.

[0046] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] The present invention proposes a method for preventing DCDC CAN signal transmission and reception failure, referring to Figure 1 , Figure 1 It is a flowchart diagram of the first embodiment of the screen display method of the present application.

[0051] In this embodiment, the method for preventing DCDC CAN signal transmission and reception failure includes steps S10 to S50:

[0052] Step S10: Detect the signals of KL15 and CAN specific frame.

[0053] Step S20: When the signals of KL15 and CAN specific frame are detected, the CAN transceiver is configured.

[0054] Step S30: When the configuration of the CAN transceiver fails, the number of configuration failures is recorded, and the CAN transceiver is reconfigured.

[0055] Step S40: When the number of configuration failures reaches a preset number of configuration failures, resetting the CAN transceiver.

[0056] Step S50: When the CAN transceiver is reset successfully, control the CAN transceiver to send a message.

[0057] It can be understood that the execution subject in this embodiment is a controller that can control the CAN transceiver. The controller can be an MCU, a DSP, an industrial control chip, or an electric vehicle controller, etc. This embodiment does not limit this.

[0058] It should be noted that the CAN specific frame may be a data frame, a remote control frame, an error frame, or an overload frame, which is not described in this embodiment.

[0059] It can be understood that the CAN specific frame is used to wake up the CAN transceiver in this embodiment;

[0060] It can be understood that, in this embodiment, the KL15 is used to provide power to the controller so that the controller starts working.

[0061] It should be noted that the configuration can be adjusted according to actual needs, which is not mentioned in this embodiment.

[0062] It should be noted that the preset configuration times can be set according to actual needs, and this embodiment does not limit this.

[0063] In specific implementation, when the signals of KL15 and CAN specific frames are detected, the CAN transceiver is awakened and the controller starts working; the controller configures the CAN transceiver; when the configuration is successful, the CAN transceiver is controlled to send messages; when the configuration fails, the controller records the number of failures and reconfigures the CAN transceiver, and when the number of failures reaches the preset configuration number, the CAN transceiver is reset; when the CAN transceiver is reset successfully, the CAN transceiver is controlled to send messages.

[0064] This embodiment solves the problem that the existing solution only configures three times and does not require readback, resulting in occasional no message being sent when DCDC is started and the entire vehicle cannot enter READY by resetting the CAN transceiver after the controller fails to configure the CAN transceiver.

[0065] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the first embodiment can refer to the above introduction, and will not be repeated in the following. Figure 2 , Figure 2 It is a flowchart diagram of the second embodiment of the screen display method of the present application.

[0066] Considering that the controller may have a fault that causes the CAN transceiver to send messages, it needs to be restarted to restore it to its initial state;

[0067] In this embodiment, the step S40 further includes steps S411 to S413:

[0068] S411: When the CAN transceiver fails to be reset, the number of failures is recorded, and the CAN transceiver is reset again.

[0069] S412: When the number of configuration failures reaches a preset number of configuration failures, restarting is performed.

[0070] S413: When the restart is successful, control the CAN transceiver to send a message.

[0071] It should be noted that the CAN transceiver may be reset by software or configuration tool reset, or by hardware reset, initialization mode or clearing error register, which is not limited in this embodiment.

[0072] It should be noted that the preset number of reset times can be set according to actual needs, and this embodiment does not limit this.

[0073] In a specific implementation, when the CAN transceiver fails to reset, the number of reset failures is recorded, and the CAN transceiver is reset again; when the number of failures reaches a preset configuration number, the controller is restarted; when the controller restarts successfully, the CAN transceiver is controlled to send a message.

[0074] Based on the second embodiment of the present application, in the third embodiment of the present application, the same or similar contents as those of the second embodiment can be referred to the above introduction, and will not be repeated in the following. Figure 3 , Figure 3 It is a flowchart diagram of the third embodiment of the screen display method of the present application.

[0075] Considering that the controller may have a fault that causes the CAN transceiver to send messages, it is necessary to power off and reset it to restore it to the factory state;

[0076] In this embodiment, the step S402 further includes steps S423 to S425:

[0077] S423: When the controller fails to restart, the number of restart failures is recorded, and the restart step is re-executed.

[0078] S424: When the controller fails for a predetermined number of times, a watchdog is used to perform a power-off reset.

[0079] S425: When the controller is powered off and reset successfully, the CAN transceiver is controlled to send a message.

[0080] It should be noted that the preset number of restarts can be set according to actual needs, and this embodiment does not limit this.

[0081] It can be understood that when the number of restart failures reaches the preset restart number, the controller stops feeding the watchdog, and when the duration reaches the preset duration, the watchdog sends a reset signal to the controller, causing the controller to power off and reset.

[0082] In a specific implementation, when the controller fails to restart, the number of restart failures is recorded and the restart steps are re-executed; when the number of failures reaches a preset number, a watchdog is used to perform a power-off reset; when the controller is successfully powered off and reset, the CAN transceiver is controlled to send a message.

[0083] Based on the third embodiment of the present application, in the fourth embodiment of the present application, the same or similar contents as those in the third embodiment can refer to the above description, and will not be repeated in the following. Figure 4 , Figure 4 It is a flowchart diagram of the fourth embodiment of the screen display method of the present application.

[0084] Further consideration is given to the possibility that a single power-off reset may fail;

[0085] In this embodiment, step S424 further includes step S435:

[0086] S435: When the power-off reset fails, re-execute the power-off reset operation using the watchdog.

[0087] In a specific implementation, when the controller fails to be powered off and reset, the operation of powering off and resetting using the watchdog is re-executed, and when the controller is successfully powered off and reset, the controller controls the CAN transceiver to send a message.

[0088] Based on the fifth embodiment of the present application, in the sixth embodiment of the present application, the same or similar contents as those in the fifth embodiment can be referred to the above description, and will not be described in detail later. Figure 6 , Figure 6 It is a flowchart diagram of the sixth embodiment of the screen display method of the present application.

[0089] Considering that it may be necessary to judge the result of CAN transceiver configuration;

[0090] In this embodiment, the step S20 further includes steps S21 to S23:

[0091] S21: Check the working status of the CAN transceiver.

[0092] S22: If the working state of the CAN transceiver is consistent with the configuration, it is determined that the configuration is successful.

[0093] S23: If the working state of the CAN transceiver does not match the configuration, it is determined that the configuration has failed.

[0094] In a specific implementation, the controller detects the working state of the CAN transceiver; if the working state of the CAN transceiver is consistent with the configuration, the configuration is determined to be successful; if the working state of the CAN transceiver is inconsistent with the configuration, the configuration is determined to be failed.

[0095] Based on the fourth embodiment of the present application, in the fifth embodiment of the present application, the same or similar contents as those in the fourth embodiment can refer to the above description, and will not be repeated in the following. Figure 5 , Figure 5It is a flowchart diagram of the fifth embodiment of the screen display method of the present application.

[0096] Considering that it may be necessary to judge the result of resetting the CAN transceiver;

[0097] In this embodiment, the step S40 further includes steps S41 to S43:

[0098] S41: Detect the working status of the CAN transceiver.

[0099] S42: If the working state of the CAN transceiver is consistent with the reset, it is determined that the reset is successful.

[0100] S43: If the working state of the CAN transceiver does not match the reset, it is determined that the reset fails.

[0101] In a specific implementation, the controller detects the working state of the CAN transceiver; if the working state of the CAN transceiver is consistent with the reset, the reset is determined to be successful; if the working state of the CAN transceiver is inconsistent with the reset, the reset is determined to be failed.

[0102] The present invention also proposes a device for preventing DCDC CAN signal transmission and reception failure, the device comprising:

[0103] Detection module 10, used to detect KL15 and CAN specific frame signals;

[0104] A driver module 20, used for configuring and resetting the CAN transceiver;

[0105] A calculation module 30, used to record the number of failures;

[0106] The control module 40 is used to control the CAN transceiver to send messages.

[0107] The device for preventing DCDC CAN signal transceiver failure proposed by the present invention adopts the method for preventing DCDCCAN signal transceiver failure in the above embodiment, which can effectively solve the problem that the vehicle cannot go to READY due to occasional no message from DCDC. The beneficial effects of the device for preventing DCDC CAN signal transceiver failure provided by the present application are the same as the beneficial effects of the method for preventing DCDCCAN signal transceiver failure provided by the above embodiment, and other technical features of the device for preventing DCDC CAN signal transceiver failure are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0108] The present invention also provides a vehicle, which can implement the steps of the above-mentioned method for preventing DCDC CAN signal transmission and reception failure.

[0109] The present invention also proposes a storage medium, which is a storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method for implementing the failure of DCDC CAN signal reception and transmission are implemented.

[0110] The storage medium provided by the present invention may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared or semiconductor systems, systems or devices, or any combination thereof. More specific examples of storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this embodiment, the storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, system or device. The program code contained on the storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0111] Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0112] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the boxes can also occur in a different order than the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0113] The modules involved in the embodiments of the present invention may be implemented by software or hardware, wherein the name of the module does not limit the unit itself in some cases.

[0114] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the steps of the method for preventing DCDC CAN signal transceiver failure as described above are implemented.

[0115] The above descriptions are only some embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A method for preventing DCDC CAN signal transmission and reception failure, characterized in that: The method for preventing DCDC CAN signal transmission and reception failure includes: Detect KL15 and CAN specific frame signals; When the KL15 and CAN specific frame signals are detected, the CAN transceiver is configured; When the configuration of the CAN transceiver fails, recording the number of configuration failures and reconfiguring the CAN transceiver; When the number of configuration failures reaches a preset number of configuration failures, resetting the CAN transceiver; When the CAN transceiver is reset successfully, the CAN transceiver is controlled to send messages.

2. The method for preventing DCDC CAN signal transmission and reception failure as claimed in claim 1, characterized in that: When the number of configuration failures reaches a preset number of configuration failures, after the step of resetting the CAN transceiver, the step further includes: When the CAN transceiver fails to be reset, the number of reset failures is recorded, and the CAN transceiver is reset again; When the number of reset failures reaches a preset number of resets, the controller restarts; When the controller restarts successfully, the CAN transceiver is controlled to send messages.

3. The method for preventing DCDC CAN signal transmission and reception failure as claimed in claim 2, characterized in that: When the CAN transceiver fails to be reset, the step of recording the number of reset failures and resetting the CAN transceiver further includes: When the controller fails to restart, the number of restart failures is recorded, and the controller restart steps are re-executed; When the number of failed restarts of the controller reaches a preset number of restarts, the controller uses a watchdog to perform a power-off reset; When the controller is powered off and reset successfully, the CAN transceiver is controlled to send messages.

4. The method for preventing DCDC CAN signal transmission and reception failure as claimed in claim 3, characterized in that: When the number of failed restarts of the controller reaches a preset number, the step of using the watchdog to perform power-off reset also includes: When the controller fails to be reset by power-off, the operation of power-off reset by using the watchdog is executed again.

5. The method for preventing DCDC CAN signal transmission and reception failure as claimed in claim 1, characterized in that: The step of configuring the CAN transceiver when the KL15 and CAN specific frame signals are detected also includes: Detect the working status of CAN transceiver; If the working status of the CAN transceiver is consistent with the configuration, the configuration is determined to be successful; If the working status of the CAN transceiver does not match the configuration, the configuration is determined to have failed.

6. The method for preventing DCDC CAN signal transmission and reception failure as claimed in claim 1, characterized in that: When the number of configuration failures reaches a preset number of configuration failures, after the step of resetting the CAN transceiver, the step further includes: Detect the working status of CAN transceiver; If the CAN transceiver operating state is consistent with the reset, the reset is determined to be successful; If the CAN transceiver operating state does not match the reset, the reset is determined to have failed.

7. A device for preventing DCDC CAN signal transmission and reception failure, characterized in that: The device comprises: Detection module, used to detect KL15 and CAN specific frame signals; A driver module, used to configure and reset the CAN transceiver; A calculation module, used to record the number of failures; The control module is used to control the CAN transceiver to send messages.

8. A vehicle, characterized in that: The vehicle can implement the steps of the method for preventing DCDCCAN signal transmission and reception failure described in any one of claims 1-6.

9. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the method for preventing DCDC CAN signal transmission and reception failure according to any one of claims 1 to 6 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the method for preventing DCDC CAN signal transceiver failure according to any one of claims 1 to 6 are implemented.

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