Log printing method and device and vehicle

Abstract

The embodiment of the invention discloses a log printing method and device and a vehicle. The method comprises the steps that when a received network management message changes, a passive wake-up log is printed based on information in the network management message, and the network management message is from an external node. Through the mode, when the received network management message of the external node is changed, the passive wake-up log can be printed based on the information in the network management message, so that the abnormity of the external node can be monitored, when the ECU is passively waken up by the external node, the power shortage can be determined more accurately, and the power loss can be prevented. And the positioning accuracy of the insufficient power supply is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and more specifically, to a log printing method, device and vehicle. Background Art

[0002] With the development of vehicle technology, more and more wake-up sources can be used to wake up the vehicle, which may cause the vehicle to be awakened abnormally and then lose power. Therefore, when power loss occurs, it is necessary to check the wake-up source and holding source of the ECU (Electronic Control Unit) to locate the power loss.

[0003] In a related method, the power failure can be located based on the network management message of each ECU. However, in the related method, there is still a problem of inaccurate positioning of the power failure. Summary of the invention

[0004] In view of the above problems, the present application proposes a log printing method, device and vehicle to improve the above problems.

[0005] In a first aspect, the present application provides a log printing method, the method comprising: when a received network management message changes, printing a passive wake-up log based on information in the network management message, the network management message coming from an external node.

[0006] In a second aspect, the present application provides a log printing device, which includes: a log printing unit, which is used to print a passive wake-up log based on information in a received network management message when a change occurs, and the network management message comes from an external node.

[0007] In a third aspect, the present application provides a vehicle comprising one or more processors and a memory; one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured to execute the above-mentioned method.

[0008] In a fourth aspect, the present application provides a computer-readable storage medium, in which program code is stored, wherein the above method is executed when the program code is run.

[0009] The present application provides a log printing method, device, vehicle and storage medium, which prints a passive wake-up log based on the information in the network management message when a network management message received from an external node changes. Through the above method, when the network management message received from the external node changes, the passive wake-up log can be printed based on the information in the network management message, so that the abnormality of the external node can be monitored, so that when the ECU is passively awakened by the external node, the power failure can be determined more accurately, thereby improving the accuracy of locating the power failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 A flow chart of a log printing method proposed in an embodiment of the present application is shown;

[0012] Figure 2 A flow chart of a log printing method proposed in another embodiment of the present application is shown;

[0013] Figure 3 A flow chart of a log printing method proposed in another embodiment of the present application is shown;

[0014] Figure 4 A structural block diagram of a log printing device proposed in an embodiment of the present application is shown;

[0015] Figure 5 A structural block diagram of a vehicle proposed in this application is shown. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] In the embodiment of the present application, the inventor proposes a log printing method, device and vehicle, and when a network management message received from an external node changes, a passive wake-up log is printed based on the information in the network management message. Through the above method, when the network management message received from the external node changes, a passive wake-up log can be printed based on the information in the network management message, so that the abnormality of the external node can be monitored, so that when the ECU is passively awakened by the external node, the power failure can be determined more accurately, thereby improving the accuracy of locating the power failure.

[0018] See also Figure 1 , an embodiment of the present application provides a log printing method, the method comprising:

[0019] S110: When a received network management message changes, printing a passive wakeup log based on information in the network management message, wherein the network management message comes from an external node.

[0020] Among them, the network management (NM) message may refer to a message used for network management and control, for example, to put the ECU into a sleep state or a wake-up state. The passive wake-up log may refer to a log used by the ECU to record events of passive wake-up by an external node, and the external node may be a CAN (Controller Area Network) node, other ECU nodes, etc.

[0021] As a method, when the number of received network management messages increases, the ECU can print a passive wakeup log based on information in the network management messages.

[0022] The increase in the number of network management messages can be understood as the ECU changing from never receiving a network management message to receiving a network management message. The increase in the number of network management messages can also be understood as the ECU first receiving a network management message from one or more external nodes and then receiving a network management message from other external nodes other than the one or more external nodes.

[0023] Optionally, the ECU may receive the network management message through its own network management channel, and the network management channel may be a CAN channel, etc. As shown in Table 1, each ECU may have one or more CAN channels, and each CAN channel may have a channel identifier.

[0024] Table 1

[0025]

[0026] In an embodiment of the present application, the information in the network management message may include an external node identifier (ID), PNC (Partial Network Cluster) information, a wake-up source identifier of the external node, etc. The PNC information can be used to determine the information of the awakened network channel, and the wake-up source identifier of the external node can be used to determine which wake-up source of the external node actively awakened the external node.

[0027] As another way, when the number of received network management messages decreases, the ECU can print a passive wakeup log based on information in the network management messages.

[0028] The reduction in the number of network management messages can be understood as the ECU not receiving a network management message from an external node again within a preset time interval after receiving the network management message from the external node.

[0029] As another way, when a network management message is received from the same external node and the information in the network management message changes, the ECU may print a passive wake-up log based on the information in the network management message.

[0030] The change in information in the network management message may include a change in a wake-up source identifier of an external node in the network management message.

[0031] In an embodiment of the present application, when a network management message is received from the same external node and the information in the network management message changes, the passive wake-up log is printed, so that the reason for the current passive wake-up of the ECU and the specific reason for each active wake-up of the external node can be more clearly understood, thereby improving the accuracy of locating power failure.

[0032] As a method of printing a passive wakeup log, the ECU may print a passive wakeup log based on an external node identifier, PNC information, and a wakeup source identifier of an external node in a network management message.

[0033] The passive wake-up log may be shown in Table 2.

[0034] Table 2

[0035]

[0036] Optionally, before executing step S110, the bus message for uploading the DLT (Diagnostic Log and Trace) log and the bus signal that triggers the uploading of the bus message can be pre-set for each ECU to ensure that the bus message containing the DLT log can be successfully uploaded to the central controller CCU and the corresponding log can be obtained through log recall.

[0037] Optionally, after the ECU prints the passive wake-up log, the passive wake-up log can be uploaded to the CCU, so that the CCU can store the logs classified according to different ECUs, so as to obtain the required ECU log information based on log recall to assist in troubleshooting related problems.

[0038] This embodiment provides a log printing method, which prints a passive wake-up log based on the information in the network management message when a network management message received from an external node changes. Through the above method, when the network management message received from the external node changes, the passive wake-up log can be printed based on the information in the network management message, so that the abnormality of the external node can be monitored, so that when the ECU is passively awakened by the external node, the power failure can be determined more accurately, and the positioning accuracy of the power failure is improved. The power failure can be understood as the node that causes the vehicle to lose power or the wake-up source, retention source, etc. corresponding to the node.

[0039] See also Figure 2 , an embodiment of the present application provides a log printing method, the method comprising:

[0040] S210: When a received network management message changes, printing a passive wakeup log based on information in the network management message, wherein the network management message comes from an external node.

[0041] S220: When a change is detected in the network wake-up source and / or the local wake-up source and / or the local hold source and / or the network hold source, an active wake-up log is printed.

[0042] Among them, the active wake-up log can refer to the log used by the ECU to record the active wake-up events by its own wake-up source. The own wake-up source can be a local wake-up source or a network wake-up source. The local wake-up source and the network wake-up source can be used to actively wake up the ECU itself, and the local hold source and the network hold source can be used to maintain the wake-up state of the ECU that has been awakened by itself. Some local wake-up sources or network wake-up sources can also be the local hold source or network hold source of the ECU, but the local hold source or the network hold source must not be a local wake-up source or a network wake-up source.

[0043] Optionally, before executing step S210, the network wake-up source, local wake-up source, local hold source, and network hold source of each ECU can be numbered to obtain the network wake-up source identifier, local wake-up source identifier, local hold source identifier, and network hold source identifier of each ECU as shown in Table 3.

[0044] Table 3

[0045]

[0046]

[0047] As a way, when the network wakeup source and / or the local wakeup source changes, the active wakeup log may be printed based on the current network wakeup source and / or the current local wakeup source.

[0048] The change of the network wake-up source and / or the local wake-up source can be understood as the ECU being awakened from having no wake-up source to having a wake-up source, and the change of the network wake-up source can also be understood as the wake-up sources of two adjacent wake-up of the ECU being different.

[0049] As another way, when the number of local hold sources and / or network hold sources changes, an active wakeup log may be printed based on the current local hold sources and / or the current network hold sources.

[0050] The change in the number of local holding sources and / or network holding sources may be understood as an increase or decrease in the number of local holding sources and / or network holding sources that are not dormant.

[0051] Among them, the active wake-up log may be shown in Table 4.

[0052] Table 4

[0053]

[0054]

[0055] It should be noted that there is no particular order in which step S210 and step S220 are executed, and the corresponding log can be printed as long as the corresponding conditions are met.

[0056] Furthermore, it should be noted that at the same time, the same ECU can only be awakened by one local wakeup source, one network wakeup source, or one network wakeup source and one local wakeup source. Each time the active wakeup log is printed, the current network wakeup source and local wakeup source can be recorded, as well as the local hold source and network hold source that are not currently in sleep mode can be recorded.

[0057] Optionally, when the hold source in the active wake-up log printed last time is released (that is, the number of hold sources is reduced), the active wake-up log printed this time does not include the released hold source.

[0058] The log printing method provided in this embodiment enables, through the above-mentioned method, when the network management message of the received external node changes, the passive wake-up log can be printed based on the information in the network management message, so that the abnormality of the external node can be monitored, so that when the ECU is passively awakened by the external node, the power failure can be determined more accurately, thereby improving the accuracy of locating the power failure. In addition, in this embodiment, when it is detected that the network wake-up source and / or local wake-up source and / or local retention source and / or network retention source of the ECU changes, the active wake-up log is printed, so that when the ECU actively wakes up, the dynamic changes of the network wake-up source, local wake-up source, local retention source, and network retention source of the ECU can be tracked, and the sleep and wake-up conditions of the ECU can be recorded, so that based on the active wake-up log, the power failure can be found from the network wake-up source, local wake-up source, local retention source, and network retention source of the ECU, thereby improving the accuracy of locating the power failure.

[0059] See also Figure 3 , an embodiment of the present application provides a log printing method, the method comprising:

[0060] S310: When a received network management message changes, printing a passive wakeup log based on information in the network management message, wherein the network management message comes from an external node.

[0061] S320: When the number of times of being awakened by the same external node reaches a first preset number, printing an abnormal statistical log, the abnormal statistical log including the external node identifier and the awakening source identifier of the external node.

[0062] The abnormal statistical log may refer to a log used by the ECU to collect statistics on abnormalities in active wake-up and passive wake-up. The abnormalities in active wake-up and passive wake-up may be abnormal operating conditions that are customized as needed.

[0063] As a method, when the number of times the ECU is awakened by the same external node reaches a first preset number of times, the ECU can print an abnormal statistical log.

[0064] Optionally, each time the ECU prints a passive wake-up log, the number of wake-up times of the external node in the passive wake-up log may be increased by 1, thereby counting the number of times each external node wakes up the ECU.

[0065] Optionally, when the number of times the vehicle is awakened by the same external node reaches a first preset number of times within a specified period of time when the vehicle is not in use, the ECU can print an abnormal statistical log.

[0066] For example, when the ECU node is awakened by a CAN node 30 times within 2 hours when the vehicle is not in use, the ECU can print an abnormal statistics log and record the identifier of the CAN node and the wake-up source identifier of the CAN node each time in the abnormal statistics log.

[0067] Optionally, when the number of times the same network wake-up source is triggered reaches a second preset number, an abnormality statistics log may be printed, and the abnormality statistics log may include an identifier of the network wake-up source.

[0068] Optionally, each time the ECU prints an active wake-up log, the number of wake-up times of the network wake-up source in each active wake-up log may be increased by 1, thereby counting the number of times each network wake-up source wakes up the ECU.

[0069] In an embodiment of the present application, when the number of times awakened by the same network wake-up source reaches a second preset number, an abnormal statistical log is printed. The abnormal statistical log can be used to more intuitively understand the abnormal network wake-up source, thereby speeding up the troubleshooting of power failure.

[0070] Optionally, when the number of times of being awakened by the same local wake-up source reaches a third preset number, an abnormal statistical log may be printed, and the abnormal statistical log may include an identifier of the local wake-up source.

[0071] Optionally, each time the ECU prints an active wake-up log, the number of wake-up times of the local wake-up source in each active wake-up log may be increased by 1, thereby counting the number of times each local wake-up source wakes up the ECU.

[0072] In an embodiment of the present application, when the number of times awakened by the same local wake-up source reaches a third preset number, an abnormal statistical log is printed. The abnormal statistical log can be used to more intuitively understand the abnormal local wake-up source, thereby speeding up the troubleshooting of power failure.

[0073] It should be noted that the first preset number of times, the second preset number of times, and the third preset number of times can be determined based on multiple tests, and the first preset number of times, the second preset number of times, and the third preset number of times can be completely the same or different.

[0074] Optionally, when the same network hold source is held for a duration greater than or equal to a first preset duration, abnormal statistics are printed, and the abnormal statistics log may include an identifier of the network hold source.

[0075] The duration of the network holding source can be understood as the time during which the corresponding holding source is continuously in a non-sleeping state.

[0076] Optionally, after the ECU prints an active wake-up log each time, the local hold source and the log printing time in each active wake-up log may be counted, thereby calculating the hold time of each local hold source.

[0077] In an embodiment of the present application, when the same network maintenance source is maintained for a time period greater than or equal to a first preset time period, abnormal statistics are printed, and the abnormal network maintenance source can be more intuitively understood through the abnormal statistics log, thereby speeding up the troubleshooting of power shortage.

[0078] Optionally, when the holding time of the same local holding source is greater than or equal to a second preset time, abnormal statistics are printed, and the abnormal statistics log may include an identifier of the local holding source.

[0079] Among them, the abnormal log can be shown in Table 5.

[0080] Table 5

[0081]

[0082] In an embodiment of the present application, when the duration of the same local holding source is greater than or equal to the second preset duration, the abnormal statistics are printed. The abnormal local holding source can be more intuitively understood through the abnormal statistics log, thereby speeding up the troubleshooting of power failure.

[0083] Optionally, steps S310 and S320 may be executed when the vehicle is in an unused state. When the vehicle is switched from an unused state to an used state, the number of times and duration statistics in step S320 may be cleared, thereby enabling statistics on the situation when the vehicle is in an unused state for a single time, thereby avoiding interference with historical records. In addition, there is no order of execution for steps S310 and S320. As long as the corresponding conditions are met, the corresponding log may be printed.

[0084] It should be noted that the first preset time length and the second preset time length can be determined based on multiple tests, and the first preset time length and the second preset time length can be the same or different.

[0085] Optionally, the abnormal logs, active wake-up logs, and passive wake-up logs may be classified into levels, so that when troubleshooting, logs with higher levels may be viewed first.

[0086] As a level classification method, the higher the importance of the ECU, the higher the level of the corresponding log. The importance of the ECU can be determined based on the function of the ECU, the impact on the vehicle when the ECU fails, etc.

[0087] As another level classification method, the types of wake-up sources and hold sources of the ECU are used to classify log levels. The level of logs containing wake-up sources and hold sources of user-perceivable types may be higher than the level of logs containing wake-up sources and hold sources of user-imperceivable types.

[0088] A log printing method provided in this embodiment enables, through the above-mentioned method, when the network management message of the received external node changes, the passive wake-up log can be printed based on the information in the network management message, so that the abnormality of the external node can be monitored, so that when the ECU is passively awakened by the external node, the power failure can be determined more accurately, and the positioning accuracy of the power failure is improved. In addition, in this embodiment, when the number of times awakened by the same external node reaches the first preset number, the abnormal statistical log is printed, and the abnormal external node with abnormality can be more intuitively understood through the abnormal statistical log, which speeds up the troubleshooting of the power failure. In addition, in this embodiment, the timing and content of log printing can be flexibly set according to the needs, so as to realize the printing and uploading storage of log content under different abnormal power failure conditions and scenarios, so as to quickly locate the power failure head and effectively assist in the troubleshooting of the power failure problem. In addition, the ECU that does not have the log storage capability itself can record and upload the sleep and wake-up conditions of itself and the external node and the abnormal power failure conditions by printing and uploading the log to the CCU, so that the sleep and wake-up information when the power failure problem occurs can be stored in time, which is convenient for the subsequent troubleshooting of the power failure problem.

[0089] See also Figure 4 The present application provides a log printing device 600, the device 600 comprising:

[0090] The log printing unit 410 is used to print a passive wake-up log based on information in a received network management message when a change occurs in the received network management message, wherein the network management message comes from an external node.

[0091] As a method, the log printing unit 410 is specifically used to print the passive wake-up log based on the information in the network management message when the number of received network management messages increases; or, when the number of received network management messages decreases, print the passive wake-up log based on the information in the network management message; or, when a network management message is received from the same external node and the information in the network management message changes, print the passive wake-up log based on the information in the network management message.

[0092] As another way, the log printing unit 410 is specifically used to print the passive wakeup log based on the external node identifier, PNC information, and the wakeup source identifier of the external node in the network management message.

[0093] As a method, the log printing unit 410 is specifically used to print the active wake-up log when detecting changes in its own network wake-up source and / or local wake-up source and / or local hold source and / or network hold source.

[0094] Optionally, the log printing unit 410 is specifically configured to print the active wakeup log based on the current network wakeup source and / or the current local wakeup source when the network wakeup source and / or the local wakeup source changes.

[0095] Optionally, the log printing unit 410 is specifically configured to print the active wake-up log based on the current local hold source and / or the current network hold source when the number of the local hold source and / or the network hold source changes.

[0096] As a method, the log printing unit 410 is specifically used to print an abnormal statistical log when the number of times of being awakened by the same external node reaches a first preset number, and the abnormal statistical log includes the external node identifier and the awakening source identifier of the external node.

[0097] As a method, the log printing unit 410 is specifically used to print an exception statistical log when the number of times the same network wake-up source is reached reaches a second preset number of times, and the exception statistical log includes the identifier of the network wake-up source; or, when the number of times the same local wake-up source is awakened reaches a third preset number of times, print the exception statistical log, and the exception statistical log includes the identifier of the local wake-up source.

[0098] As a method, the log printing unit 410 is specifically used to print exception statistics when the same network holding source is held for a duration greater than or equal to a first preset duration, and the exception statistics log includes the identifier of the network holding source; or, when the same local holding source is held for a duration greater than or equal to a second preset duration, print exception statistics, and the exception statistics log includes the identifier of the local holding source.

[0099] The following will be combined Figure 5 A vehicle provided in the present application is described.

[0100] See also Figure 5 Based on the above log printing method and device, the embodiment of the present application also provides another vehicle 100 that can execute the above log printing method. The vehicle 100 includes one or more (only one is shown in the figure) processors 102 and a memory 104 coupled to each other. The memory 104 stores a program that can execute the content of the above embodiment, and the processor 102 can execute the program stored in the memory 104.

[0101] The processor 102 may include one or more processing cores. The processor 102 uses various interfaces and lines to connect various parts of the entire vehicle 100, and executes various functions and processes data of the vehicle 100 by running or executing instructions, programs, code sets or instruction sets stored in the memory 104, and calling data stored in the memory 104. Optionally, the processor 102 can be implemented in at least one hardware form of a network processor (Neural network Processing Unit, NPU), a digital signal processing (Digital Signal Processing, DSP), a field programmable gate array (Field-Programmable Gate Array, FPGA), a programmable logic array (Programmable Logic Array, PLA), and an electronic control unit (Electronic Control Unit, ECU). The processor 102 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU), a network processor (Neural network Processing Unit, NPU) and a modem. The CPU mainly processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing display content; the NPU is responsible for processing multimedia data such as video and images; and the modem is used to process wireless communications. It is understandable that the above-mentioned modem may not be integrated into the processor 102, but may be implemented separately through a communication chip.

[0102] The memory 104 may include a random access memory (RAM) or a read-only memory (ROM). The memory 104 may be used to store instructions, programs, codes, code sets or instruction sets. The memory 104 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the following various method embodiments, etc. The data storage area may also store data created by the vehicle 100 during use (such as a phone book, audio and video data, chat record data), etc.

[0103] An embodiment of the present application provides a computer-readable storage medium in which a program code is stored, and the program code can be called by a processor to execute the method described in the above method embodiment.

[0104] The computer readable storage medium may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk, or a ROM. Optionally, the computer readable storage medium 800 includes a non-transitory computer-readable storage medium. The computer readable storage medium 800 has storage space for program codes that execute any of the method steps in the above method. These program codes can be read from or written to one or more computer program products. The program code can be compressed, for example, in an appropriate form.

[0105] In summary, the present application provides a log printing method, device, and vehicle, which print a passive wake-up log based on the information in the network management message when a change occurs in the network management message received from an external node. Through the above method, when a change occurs in the network management message received from an external node, a passive wake-up log can be printed based on the information in the network management message, so that anomalies of the external node can be monitored, so that when the ECU is passively awakened by an external node, the power failure can be determined more accurately, thereby improving the accuracy of locating the power failure.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A log printing method, characterized in that: The method comprises: When a received network management message changes, a passive wakeup log is printed based on information in the network management message, the network management message coming from an external node.

2. The method according to claim 1, characterized in that When the received network management message changes, printing a passive wakeup log based on information in the network management message includes: When the number of received network management messages increases, printing the passive wakeup log based on information in the network management messages; or, When the number of received network management messages decreases, printing the passive wakeup log based on information in the network management messages; or, When a network management message is received from the same external node and the information in the network management message changes, the passive wake-up log is printed based on the information in the network management message.

3. The method according to claim 1, characterized in that: Printing a passive wakeup log based on information in the network management message includes: The passive wakeup log is printed based on the external node identifier, PNC information, and the wakeup source identifier of the external node in the network management message.

4. The method according to claim 1, characterized in that: The method further comprises: When changes are detected in the network wakeup source and / or the local wakeup source and / or the local hold source and / or the network hold source, an active wakeup log is printed.

5. The method according to claim 4, characterized in that When a change is detected in the network wake-up source and / or the local wake-up source and / or the local hold source and / or the network hold source, the active wake-up log is printed, including: When the network wakeup source and / or the local wakeup source changes, the active wakeup log is printed based on the current network wakeup source and / or the current local wakeup source.

6. The method according to claim 4, characterized in that When a change is detected in the network wake-up source and / or the local wake-up source and / or the local hold source and / or the network hold source, the active wake-up log is printed, including: When the number of local hold sources and / or network hold sources changes, the active wakeup log is printed based on the current local hold sources and / or the current network hold sources.

7. The method according to claim 1, characterized in that The method further comprises: When the number of times of being awakened by the same external node reaches a first preset number, an abnormal statistical log is printed, and the abnormal statistical log includes the external node identifier and the awakening source identifier of the external node.

8. The method according to claim 1, characterized in that The method further comprises: When the number of times the same network wake-up source is used reaches a second preset number, printing an abnormality statistics log, wherein the abnormality statistics log includes an identifier of the network wake-up source; or, When the number of times of being awakened by the same local wake-up source reaches a third preset number, an abnormal statistical log is printed, and the abnormal statistical log includes an identifier of the local wake-up source.

9. The method according to claim 1, characterized in that: The method further comprises: When the same network hold source holds for a duration greater than or equal to a first preset duration, printing abnormal statistics, the abnormal statistics log includes an identifier of the network hold source; or, When the holding time of the same local holding source is greater than or equal to the second preset time, the abnormal statistics are printed, and the abnormal statistics log includes the identifier of the local holding source.

10. A log printing device, characterized in that: The device comprises: The log printing unit is used to print a passive wake-up log based on information in a received network management message when a change occurs, wherein the network management message comes from an external node.

11. A vehicle, characterized in that: The method comprises one or more processors and a memory; one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured to execute the method according to any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores program code, wherein when the program code is run, the method according to any one of claims 1 to 9 is executed.

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