Fault detection method and device, vehicle and storage medium

Abstract

The embodiment of the invention discloses a fault detection method and device, a vehicle and a storage medium. The method comprises the following steps: checking whether the power distribution of each power distribution port is normal or not; if abnormal power distribution is detected, power distribution abnormity reasons of a target power distribution port are analyzed according to the obtained configuration parameters, and the target power distribution port is a power distribution port with abnormal power distribution; if the power distribution abnormity reason of the target power distribution port is current overload, acquiring the port type of the target power distribution port; based on the port type, carrying out overload fault detection on the target power distribution port for a preset number of times; and if the abnormal power distribution reason of the target power distribution port is still current overload, turning off the target power distribution port. According to the method, when a real overload phenomenon occurs in the port, the overload port can be turned off more effectively and accurately, and the power distribution overload mis-turn-off rate is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of vehicles, and particularly relates to a fault detection method, device, vehicle, and storage medium. Background Technique

[0002] The ZCU (Zone Control Unit) is an important part of the new automotive electronic architecture, mainly responsible for the acquisition of input signals and the driving of output loads. Intelligent power distribution mainly realizes intelligent management of the power supply to all electrical devices connected to the ZCU under different vehicle modes and for different usage patterns, in combination with network management and function requests. At the same time, it monitors the power supply status of the power grid, promptly discovers abnormalities in power distribution, and takes timely measures to ensure the orderly and safe operation of the vehicle's power supply.

[0003] The conventional intelligent power distribution diagnosis strategy is used to cover the power distribution ports on the ZCU. When an overcurrent occurs at a port, the port is immediately shut off according to the I2T curve, the electronic fuse is cut off, and after the current drops and returns to normal, the electronic fuse is restored, and then the corresponding port is reactivated. In this method, there will be a situation where the port misjudges the overcurrent and causes a mis-shutdown. Summary of the Invention

[0004] In view of the above problems, this application proposes a fault detection method, device, vehicle, and storage medium to improve the above problems.

[0005] In a first aspect, an embodiment of this application provides a fault detection method for in-vehicle intelligent power distribution. The method includes: checking whether the power distribution of each power distribution port is normal; if abnormal power distribution is detected, analyzing the cause of the abnormal power distribution of the target power distribution port according to the obtained configuration parameters, where the target power distribution port is the power distribution port with abnormal power distribution; if the cause of the abnormal power distribution of the target power distribution port is current overload, obtaining the port type of the target power distribution port; based on the port type, performing a preset number of overload fault detections on the target power distribution port; if the cause of the abnormal power distribution of the target power distribution port is still current overload, shutting off the target power distribution port.

[0006] Second aspect, an embodiment of the present application provides a fault detection device for in-vehicle intelligent power distribution. The device includes: an inspection unit for inspecting whether the power distribution of each power distribution port is normal; an analysis unit for analyzing the cause of abnormal power distribution of the target power distribution port according to the obtained configuration parameters if abnormal power distribution is detected, where the target power distribution port is the power distribution port with abnormal power distribution; an acquisition unit for acquiring the port type of the target power distribution port if the cause of abnormal power distribution of the target power distribution port is current overload; a detection unit for performing a preset number of overload fault detections on the target power distribution port based on the port type; and a control unit for shutting off the target power distribution port if the cause of abnormal power distribution of the target power distribution port is still current overload.

[0007] Third aspect, an embodiment of the present application provides a vehicle, including one or more processors and a memory; one or more programs, where the 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] Fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which program code is stored, and when the program code runs, it executes the above-mentioned method.

[0009] An embodiment of the present application provides a fault detection method, device, vehicle and storage medium. First, it is checked whether the power distribution of each power distribution port is normal. If abnormal power distribution is detected, the cause of abnormal power distribution of the target power distribution port is analyzed according to the obtained configuration parameters. If the cause of abnormal power distribution of the target power distribution port is current overload, the port type of the target power distribution port is acquired, and based on the port type, a preset number of overload fault detections are performed on the target power distribution port. If the cause of abnormal power distribution of the target power distribution port is still current overload, the target power distribution port is shut off. Through the above method, when a real overload phenomenon occurs at the port, the overload port can be shut off more effectively and accurately, reducing the false shut-off rate of power distribution overload. Description of the Drawings

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

[0011] Figure 1 Shows the block diagram of the ZCU power distribution system that can execute the fault detection method proposed in an embodiment of the present application;

[0012] Figure 2Shows the flowchart of a fault detection method proposed in an embodiment of the present application;

[0013] Figure 3 Shows the flowchart of a fault detection method proposed in another embodiment of the present application;

[0014] Figure 4 Shows the timing diagram of the distribution overload fault diagnosis described in steps S210 - S230 in another embodiment of the present application;

[0015] Figure 5 Shows the timing diagram of the distribution port redrive in another embodiment of the present application;

[0016] Figure 6 Shows the flowchart of a fault detection method proposed in another embodiment of the present application;

[0017] Figure 7 Shows the structural block diagram of a fault detection device proposed in an embodiment of the present application;

[0018] Figure 8 Shows the structural block diagram of a vehicle for executing the fault detection method according to the embodiment of the present application;

[0019] Figure 9 Shows the storage unit for storing or carrying the program code for implementing the fault detection method according to the embodiment of the present application. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0021] An embodiment of the present application proposes a fault detection method, device, vehicle, and storage medium. First, check whether the power distribution of each distribution port is normal. If abnormal power distribution is detected, analyze the cause of the power distribution abnormality of the target distribution port according to the obtained configuration parameters. If the cause of the power distribution abnormality of the target distribution port is current overload, obtain the port type of the target distribution port, and based on the port type, perform a preset number of overload fault detections on the target distribution port. If the cause of the power distribution abnormality of the target distribution port is still current overload, turn off the target distribution port. Through the above method, when a real overload phenomenon occurs at the port, the overload port can be turned off more effectively and accurately, reducing the false turn-off rate of the power distribution overload.

[0022] Please refer to Figure 1, the fault detection method provided by the embodiments of the present application can be applied to Figure 1 the ZCU power distribution system 100 shown in FIG. The ZCU power distribution system 100 may include three modules: a port configuration management module 110, a port output control module 120, and a port fault diagnosis module 130. The ZCU is an important part of the new automotive electronic architecture and is mainly responsible for the acquisition of input signals and the driving of output loads. Intelligent power distribution mainly realizes intelligent management of the power supply to all electrical devices connected to the ZCU in different vehicle modes and for different usage modes, in combination with network management and function requests. At the same time, it monitors the power supply status of the power grid, promptly discovers abnormalities in power distribution, and takes timely measures to ensure the orderly and safe operation of the vehicle's power supply.

[0023] Among them, the port configuration management module 110 can achieve the matching of hardware ports and functional signals by changing and adjusting the diagnostic configuration code through diagnostic services.

[0024] The port output control module 120 executes the processing strategy in the case of message anomalies in the power-on / power-off control instruction set sent by the central computing unit (CCU). The ZCU configures the corresponding power distribution ports (i.e., each power port in Figure 1 according to the user mode status input by the CCU (i.e., the usage mode in Figure 1 ) and the power distribution request information; when the ZCU receives a port value of 1 for intelligent power distribution, it controls the corresponding port to power on, and when it receives a port value of 0 for intelligent power distribution, it controls the corresponding port to power off.

[0025] The port fault diagnosis module 130 is responsible for collecting the opening and closing states of the power drive ports by the internal hardware of the ZCU, detecting and monitoring the real-time current of the power drive ports by the internal hardware of the ZCU and recording it. When the condition is met (this condition can refer to the port disconnection condition), it disconnects the drive port and feeds back the port status and fault signal (i.e., the power distribution status in Figure 1 ) to the CCU.

[0026] Next, the embodiments of the present application will be specifically described with reference to the accompanying drawings.

[0027] Please refer to Figure 2 , a fault detection method provided by the embodiments of the present application for in-vehicle intelligent power distribution, the method includes:

[0028] Step S110: Check whether the power distribution of each power distribution port is normal.

[0029] In the embodiments of the present application, each power distribution port refers to all power distribution ports in the ZCU.

[0030] The ZCU can monitor the power distribution status and current of each power distribution port in real time through the port fault diagnosis module. Specifically, when the ZCU configures the corresponding power distribution port according to the usage mode and power distribution request input by the CCU, after the power distribution is completed, it monitors the power distribution status of each power distribution port in real time. Among them, different usage modes mean configuring different numbers of power distribution ports, and the power distribution request is used to configure the power-on or power-off of the power distribution port.

[0031] In the embodiment of the present application, the power distribution status of each power distribution port is traversed to determine whether the power distribution of each power distribution port is normal.

[0032] Step S120: If abnormal power distribution is detected, analyze the cause of the abnormal power distribution of the target power distribution port according to the obtained configuration parameters, where the target power distribution port is the power distribution port with abnormal power distribution.

[0033] In the embodiment of the present application, abnormal power distribution means that the power distribution status of a power distribution port is detected to be abnormal. The configuration parameters are parameters preset for analyzing the cause of abnormal power distribution of the power distribution port. Among them, the configuration parameters can include the main parameters involved in the overload fault diagnosis of the power distribution port, and the fault identifiers of various abnormal power distribution causes, etc. Different abnormal power distribution causes can be identified by different fault identifiers.

[0034] Among them, the main parameters involved in the overload fault diagnosis of the power distribution port can include the overload shutdown time, detection coefficient and detection interval, port drive open duration, I2T protection start time, and shutdown time adjustment range. Among them, the overload shutdown time refers to the time corresponding to the I2T curve when the port current reaches the determined overload value, that is, when the power distribution port detects an overload situation, the time required to cut off the power supply. This overload shutdown time can be adjusted within a certain range to adapt to the needs of different circuits and devices. The detection interval is the time interval between each re-drive. The port drive open duration is the duration of each re-drive of the power distribution port open attempt, that is, the time that the port should remain open in the normal working state, which helps the system evaluate the working state and load situation of the port, and thus indirectly affects the diagnosis and handling of overload faults. The I2T protection start time is the time when the I2T protection starts during the port drive open process, that is, the I2T protection start time refers to the time when the transient current exceeds the set threshold and the I2T protection mechanism starts to work, such as 200ms. The shutdown time adjustment range refers to the range within which the overload shutdown time is allowed to be adjusted, such as 60%-100%.

[0035] As a way, first, according to the power distribution status of each power distribution port obtained, determine the power distribution ports in the power distribution abnormal state (i.e., target power distribution ports). Furthermore, based on the fault identifiers of the abnormal power distribution reasons of each power distribution port in the power distribution abnormal state and the main parameters involved in the overloading fault diagnosis of the power distribution port, determine the reasons for the power distribution abnormality of the target power distribution port.

[0036] Step S130: If the reason for the power distribution abnormality of the target power distribution port is current overload, obtain the port type of the target power distribution port.

[0037] In the embodiments of the present application, the target power distribution port can be understood as the power distribution port where the current determined power distribution is abnormal. The target power distribution port may include at least one power distribution port where the current determined power distribution is abnormal. The port type of the target power distribution port may be a constant power port and / or a non-constant power port.

[0038] As a way, different types of power distribution ports are set with different port identifiers. Furthermore, after determining the target power distribution port, the type of the target power distribution port can be determined based on the port identifier of the target power distribution port.

[0039] Step S140: Based on the port type, perform overloading fault detection on the target power distribution port for a preset number of times.

[0040] In the embodiments of the present application, the preset number of times is the main parameter involved in the overloading fault diagnosis of the power distribution port. The preset number of times can be understood as the number of detections. Specifically, the preset number of times is the number of times that needs to be redetected when initially determining that the reason for the power distribution abnormality is current overload.

[0041] After determining the target power distribution port and the port type of the target power distribution port through a preset rule, the reason for the power distribution abnormality of the target power distribution port can be further determined. Among them, the preset rule is a rule preset for determining the target power distribution port.

[0042] If it is initially determined that the reason for the power distribution abnormality of the target power distribution port is current overload, in order to reduce the power distribution port mis-shutdown rate, the overloading fault judgment can be performed on the target power distribution port again for a preset number of times. Among them, the overloading fault judgment refers to judging whether the reason for the power distribution abnormality of the target port is still current overload.

[0043] Step S150: If the reason for the power distribution abnormality of the target power distribution port is still current overload, shut down the target power distribution port.

[0044] In an embodiment of the present application, if the current overload fault of the target power distribution port still exists after a preset number of overload fault detections, the target power distribution port is shut down; if the current overload fault of the target power distribution port disappears after a preset number of overload fault detections, the real-time detection and monitoring of the current of the power distribution port are recorded. The shutdown mentioned above means that no further attempt will be made to retry opening the target port in the future.

[0045] A fault detection method provided by the present application first checks whether the power distribution of each power distribution port is normal. If abnormal power distribution is detected, the reason for the abnormal power distribution of the target power distribution port is analyzed according to the obtained configuration parameters. If the reason for the abnormal power distribution of the target power distribution port is current overload, the port type of the target power distribution port is obtained, and based on the port type, a preset number of overload fault detections are performed on the target power distribution port. If the reason for the abnormal power distribution of the target power distribution port is still current overload, the target power distribution port is shut down. Through the above method, when a real overload phenomenon occurs at the port, the overload port can be shut down more effectively and accurately, reducing the mis-shutdown rate of power distribution overload.

[0046] Please refer to Figure 3 , a fault detection method provided by an embodiment of the present application is used for in-vehicle intelligent power distribution. The method includes:

[0047] Step S210: Check whether the power distribution of each power distribution port is normal.

[0048] Step S220: If abnormal power distribution is detected, analyze the reason for the abnormal power distribution of the target power distribution port according to the obtained configuration parameters, where the target power distribution port is the power distribution port with abnormal power distribution.

[0049] Step S230: If the reason for the abnormal power distribution of the target power distribution port is current overload, obtain the port type of the target power distribution port.

[0050] Step S240: Based on the port type, perform a preset number of operations of closing the target power distribution port and then retrying to open the target power distribution port.

[0051] In an embodiment of the present application, in the operation of performing a preset number of operations of closing the target power distribution port and then retrying to open the target power distribution port, closing the target power distribution port and then retrying to open the target power distribution port is performed once.

[0052] If it is preliminarily determined that the reason for the abnormal power distribution of the target power distribution port is current overload, the behavior of performing a preset number of operations of closing the target power distribution port and then retrying to open the target power distribution port can be executed. That is, when it is detected that the target power distribution port triggers I2T protection shutdown, the target power distribution port needs to be closed and then the defined number of times is retried to open the target power distribution port to determine whether it is still overloaded.

[0053] Step S250: Perform overload fault detection on the target power distribution port that is reopened each time, so as to perform overload fault detection on the target power distribution port for a preset number of times.

[0054] In the embodiment of the present application, in the overload fault detection for the preset number of times, the interval time between adjacent overload fault detections is a preset time. Here, the preset time is the aforementioned detection interval time, and this preset time can be set according to actual needs. For example, this preset time can be set to 150 ms. The interval time between adjacent overload fault detections refers to the time interval during the retry opening process of the target power distribution port. To avoid mis - shutdown of the target power distribution port, during the retry opening process of the target power distribution port, I2T protection is not enabled for the first Tp (i.e., the aforementioned I2T protection start time) of each retry, and the calculation starts only after Tp. Here, starting the calculation means calculating the integral of the current and time of this target power distribution port.

[0055] Overload fault detection means that after reopening the target power distribution port each time, it is calculated whether the integral of the current and time at the target power distribution port exceeds a set threshold.

[0056] The processes described in Step S240 and Step S250 may further include: if the port type is a constant - power port, perform overload fault detection on the target power distribution port for a first number of times; if the port type is a non - constant - power port, perform overload fault detection on the target power distribution port for a second number of times, and the first number is different from the second number.

[0057] In the embodiment of the present application, the first number is the number of times of re - detection for the constant - power port set in advance, and the second number is the number of times of re - detection for the non - constant - power port set in advance. It can be known that different types of power distribution ports can be set with different detection times.

[0058] After determining the type of the target power distribution port, the detection times set in advance for this type can be obtained. Then, when initially determining that the power distribution abnormality cause of the target power distribution port is current overload, overload fault detection for a preset number of times can be performed on the target power distribution port of this type.

[0059] Further, the cause of power distribution anomaly in the embodiments of the present application can be determined based on the power distribution anomaly identifier. Different causes of power distribution anomaly can correspond to different power distribution anomaly identifiers. Optionally, before obtaining the power distribution anomaly cause identifier of the target power distribution port, it is necessary to first determine the target power distribution port. In the embodiments of the present application, the target power distribution port can be determined by the power distribution status of the port. Specifically, traverse all power distribution ports, obtain the power distribution status of all power distribution ports. If among all power distribution ports, there is a power distribution port whose power distribution status is FAIL, it can be determined that the power distribution of this power distribution port fails, and this power distribution port with power distribution failure is determined as the target power distribution port. On the contrary, if the power distribution status of the power distribution port is SUCCESS, it can be determined that the power distribution of this power distribution port is successful.

[0060] Step S260: If the cause of power distribution anomaly of the target power distribution port is still current overload, turn off the target power distribution port.

[0061] In the embodiments of the present application, the process described in steps S210 - S240 refers to a series of retry and judgment operations after the I2T protection is triggered and the target power distribution port is turned off to confirm whether there is still an overload situation:

[0062] Trigger the I2T protection to turn off: First, the power distribution port triggers protection due to the combination of current and time integral (I2T value) exceeding the set threshold, and the power supply is automatically cut off. Among them, the set threshold is a threshold set in advance to represent current overload. That is, if the I22T protection is triggered and turned off for the target power distribution port, it can be further determined that the cause of power distribution anomaly of the target power distribution port is current overload.

[0063] Close the port and wait: After the protection is triggered, the system immediately closes the target power distribution port and waits for a period of time (the time interval is Td) for subsequent retry operations. Among them, the time interval is Td, which refers to the aforementioned detection interval.

[0064] Retry to open the port: After the waiting time ends, the system attempts to reopen the target power distribution port. However, at this time, the I2T protection is not immediately enabled, but an initial opening time Tp is set to ensure that the port can work stably without being accidentally turned off due to transient current. Among them, the initial opening time Tp refers to the aforementioned I2T protection start time.

[0065] Judge whether there is overload: After the Tp time has passed, the system starts to calculate the current and time integral to judge whether there is still an overload situation. If the combination of current and time integral exceeds the set threshold again, the port will be turned off again.

[0066] Determine subsequent operations based on the retry result: If within the specified number of detection times Cd, the port does not trigger the I2T protection shutdown again, it indicates that the overload fault may have been eliminated. At this time, the system continues to monitor the status of the power distribution port. If after the specified number of detection times Cd, the port still triggers the I2T protection shutdown, it indicates that the overload fault still exists. At this time, the system records the actual shutdown time of the port (excluding the detection time) and jumps to perform further fault handling or alarm operations.

[0067] Through the above process, the system can accurately determine whether there is an overload situation in the target power distribution port and take corresponding protection measures to ensure the safe operation of the circuit and equipment.

[0068] Exemplarily, the timing diagram of the power distribution overload fault diagnosis described in steps S210 - S240 can be as Figure 4 shown Figure 4 The process can be described as follows: First, if the power distribution port receives a control signal, the power distribution port opens Sup, and the ZCU detects the current of the power distribution port in real time through the port fault diagnosis module. If an overload fault is detected according to the I2T threshold, the power distribution port is used as the target power distribution port and the target power distribution port is closed to further determine the cause of the power distribution abnormality of the target power distribution port. At this time, the drive to reopen the target power distribution port for detection will be repeated (when repeating the opening, the corresponding number of times will be repeated according to the type of the target power distribution port. For example, the non-constant power port is repeated 5 times; the constant power port is repeated 10 times). If after repeating the detection of the target power distribution port a preset number of times, the target power distribution port still triggers the I2T protection, it is officially determined that the cause of the power distribution abnormality of the target power distribution port is port overload (i.e., current overload), and then the ZCU can send a fault message to the CCU.

[0069] Furthermore, the timing diagram of the power distribution port redrive can be as Figure 5 shown. In Figure 5 , when it is initially determined that the cause of the power distribution abnormality of the target power distribution port is current overload, the target power distribution port is closed, and then after an interval of 150 ms, the process of retrying to open the target power distribution port for the first, second, third,..., Cd times is respectively carried out within the duration of each port drive opening. Among them, in the process of each retry to open the target power distribution port, the I2T protection will not be enabled in the first 200 ms (i.e., the aforementioned I2T protection start time), and the I2T protection will be enabled after 200 ms; and the time interval between adjacent retries to open the target power distribution port (i.e., the aforementioned detection interval) is 150 ms.

[0070] Through the above method, as shown in Table 1, when the number of repeated detections is greater than or equal to 4, the overload mis-shutdown rate of the power distribution port will drop to less than or equal to 20%.

[0071] Table 1. Redrive times and overload mis-shutdown rate of the power distribution port

[0072]

[0073]

[0074] A fault detection method provided by the present application first checks whether the power distribution of each power distribution port is normal. If abnormal power distribution is detected, the reason for the abnormal power distribution of the target power distribution port is analyzed according to the obtained configuration parameters. If the reason for the abnormal power distribution of the target power distribution port is current overload, the port type of the target power distribution port is obtained. Based on the port type, the target power distribution port is closed a preset number of times and then retried to open. Then, an overload fault detection is performed on the target power distribution port that is reopened each time, so as to perform an overload fault detection on the target power distribution port a preset number of times. If the reason for the abnormal power distribution of the target power distribution port is still current overload, the target power distribution port is turned off. When a real overload phenomenon occurs at the port, the overload port can be turned off more effectively and accurately, reducing the false turn-off rate of power distribution overload.

[0075] Please refer to Figure 6 , a fault detection method provided by an embodiment of the present application, the method includes:

[0076] Step S310: Obtain the power distribution identifiers of each power distribution port.

[0077] In the embodiment of the present application, the power distribution identifier is used to characterize the power distribution status of the power distribution port. Different power distribution ports can be represented by different power distribution identifiers. Each power distribution port refers to all the power distribution ports in the ZCU.

[0078] Step S320: Based on the power distribution identifier, determine whether the power distribution status of each power distribution port is normal.

[0079] In the embodiment of the present application, the power distribution identifier may include SUCCESS and FAIL. When it is determined that the power distribution identifier of a certain power distribution port is FAIL, it indicates that the power distribution status of this power distribution port is abnormal; when it is determined that the power distribution identifier of a certain power distribution port is SUCCESS, it means that the power distribution status of this power distribution port is normal.

[0080] Step S330: If it is determined that the power distribution status of a power distribution port is abnormal, determine the power distribution port with abnormal power distribution status as the target power distribution port.

[0081] In the embodiment of the present application, the power distribution port with the power distribution identifier of FAIL is determined as the target power distribution port.

[0082] Step S340: According to the obtained configuration parameters, determine the reason for the abnormal power distribution of the target power distribution port.

[0083] As one approach, a fault identifier of the target power distribution port is obtained; and based on the fault identifier, a cause of abnormal power distribution at the target power distribution port is determined.

[0084] In the embodiment of the present application, different fault causes of the power distribution port can be represented by different fault identifiers. Then, when the target power distribution port is determined and the cause of the power distribution abnormality of the target power distribution port needs to be determined, the fault identifier of the target power distribution port can be obtained.

[0085] If the fault identifier obtained for the target power distribution port is an identifier representing current overload, it can be determined that the cause of the power distribution abnormality at the target power distribution port is current overload; if the fault identifier obtained for the target power distribution port is an identifier representing the terminal ground, it can be determined that the cause of the power distribution abnormality at the target power distribution port is short ground; if the fault identifier obtained for the target power distribution port is an identifier representing other faults, it can be determined that the cause of the power distribution abnormality at the target power distribution port is other faults.

[0086] When it is preliminarily determined that the cause of the power distribution abnormality of the target power distribution port is current overload, the target power distribution port is detected repeatedly for a preset number of times; when it is preliminarily determined that the cause of the power distribution abnormality of the target power distribution port is other faults, the target power distribution port can be processed based on the processing logic of other faults.

[0087] As another way, the current value of the target power distribution port is obtained; and based on the current value, the cause of the power distribution abnormality of the target power distribution port is determined.

[0088] In an embodiment of the present application, it is also possible to determine whether the cause of the abnormal power distribution at the target power distribution port is a current overload based on the current current value of the target power distribution port. Specifically, if the current current value of the target power distribution port is detected to be greater than or equal to a preset current value, it can be preliminarily determined that the cause of the abnormal power distribution at the target power distribution port is a current overload; conversely, if the current current value of the target power distribution port is detected to be less than the preset current value, it can be determined that the cause of the abnormal power distribution at the target power distribution port is another fault. The preset current value is a pre-set minimum current value that indicates a port current overload.

[0089] Step S350: If the power distribution abnormality of the target power distribution port is caused by current overload, the port type of the power distribution port is obtained.

[0090] Step S360: Based on the port type, perform overload fault detection on the target power distribution port a preset number of times.

[0091] Step S370: If the power distribution abnormality of the target power distribution port is still caused by current overload, shut down the target power distribution port.

[0092] In an embodiment of the present application, after the processes described in steps S310 - S320 are completed, the main parameters related to the over - load fault diagnosis of the previously set power distribution ports can be adjusted, and then the over - load fault of the power distribution ports can be diagnosed based on the adjusted main parameters.

[0093] Optionally, after the processes described in steps S310 - S320 are completed, it is possible to check whether there is a new power distribution request. If there is, return to step S310; otherwise, if not, end the process.

[0094] A fault detection method provided by the present application relies on the port fault diagnosis module of the ZCU to provide a configurable intelligent power distribution fault diagnosis strategy, which can configure the main parameters of the fault diagnosis strategy according to different working conditions: turn - off time, detection times, and detection intervals. When an over - load current occurs, it can more flexibly turn off the problem port to ensure the normal operation of the ZCU power supply.

[0095] Please refer to Figure 7 , a fault detection device 400 provided by an embodiment of the present application, the device 400 includes:

[0096] An inspection unit �10, configured to inspect whether the power distribution of each power distribution port is normal.

[0097] As a method, the inspection unit 410 is specifically configured to obtain the power distribution identifier of each power distribution port; based on the power distribution identifier, determine whether the power distribution status of each power distribution port is normal.

[0098] An analysis unit 420, configured to analyze the cause of the abnormal power distribution of the target power distribution port according to the obtained configuration parameters if abnormal power distribution is detected, where the target power distribution port is the power distribution port with abnormal power distribution.

[0099] As a method, the analysis unit 420 is specifically configured to, if it is determined that the power distribution status of a power distribution port is abnormal, determine the power distribution port with abnormal power distribution status as the target power distribution port; according to the obtained configuration parameters, determine the cause of the abnormal power distribution of the target power distribution port.

[0100] As one of the methods, the analysis unit 420 is specifically configured to obtain the fault identifier of the target power distribution port; based on the fault identifier, determine the cause of the abnormal power distribution of the target power distribution port.

[0101] As another one of the methods, the analysis unit 420 is specifically configured to obtain the current current value of the target power distribution port; based on the current current value, determine the cause of the abnormal power distribution of the target power distribution port.

[0102] An acquisition unit 430, configured to obtain the port type of the target power distribution port if the cause of the abnormal power distribution of the target power distribution port is current overload.

[0103] The detection unit 440 is configured to perform an overloading fault detection on the target power distribution port a preset number of times based on the port type.

[0104] As a way, the detection unit 440 is specifically configured to perform the operation of closing the target power distribution port a preset number of times and then retrying to open the target power distribution port; perform an overloading fault detection on the target power distribution port each time it is reopened, so as to perform an overloading fault detection on the target power distribution port a preset number of times.

[0105] As another way, the detection unit 440 is specifically configured to perform a first number of overloading fault detections on the target power distribution port if the port type is a constant power port; perform a second number of overloading fault detections on the target power distribution port if the port type is a non-constant power port, where the first number is different from the second number.

[0106] The control unit 450 is configured to turn off the target power distribution port if the cause of the abnormal power distribution of the target power distribution port is still current overload.

[0107] It should be noted that the device embodiments in this application correspond to the foregoing method embodiments. The specific principles in the device embodiments can refer to the content in the foregoing method embodiments, and will not be elaborated here.

[0108] Next, Figure 8 a vehicle provided by this application will be described.

[0109] Please refer to Figure 8 , based on the foregoing fault detection method and device, another vehicle 800 that can execute the foregoing fault detection method is further provided in an embodiment of this application. The vehicle 800 includes one or more (only one is shown in the figure) processors 802, a memory 804, a millimeter-wave radar 806, and a network module 806 that are coupled to each other. Among them, a program that can execute the content in the foregoing embodiments is stored in the memory 804, and the processor 802 can execute the program stored in the memory 804.

[0110] Among them, the processor 802 may include one or more processing cores. The processor 802 connects various parts within the entire vehicle 800 through various interfaces and lines, and executes various functions of the vehicle 800 and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 804, and by calling the data stored in the memory 804. Optionally, the processor 802 may be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), or programmable logic array (PLA). The processor 802 may integrate a combination of one or several of a central processing unit (CPU), a graphics processing unit (GPU), and a modem, etc. Among them, the CPU mainly processes the operating system, user interface, application programs, etc.; the GPU is responsible for rendering and drawing the displayed content; the modem is used to process wireless communication. It can be understood that the above-mentioned modem may not be integrated into the processor 802 and may be implemented separately through a communication chip.

[0111] The memory 804 may include random access memory (RAM) and may also include read-only memory. The memory 804 can be used to store instructions, programs, code, code sets or instruction sets. The memory 804 may include a program storage area and a data storage area. Among them, the program storage area may store instructions for implementing the operating system, instructions for implementing at least one function (such as touch function, sound playback function, image playback function, etc.), instructions for implementing the following various method embodiments, etc. The data storage area may also store data created during the use of the vehicle 800 (such as phone book, audio and video data, chat record data, etc.).

[0112] The network module 806 is used to receive and transmit electromagnetic waves, realize the mutual conversion between electromagnetic waves and electrical signals, so as to communicate with a communication network or other devices, such as communicating with a vehicle. The network module 806 may include various existing circuit elements for performing these functions, such as antennas, radio frequency transceivers, digital signal processors, encryption / decryption chips, subscriber identity module (SIM) cards, memories, and so on. The network module 806 can communicate with various networks such as the Internet, enterprise intranets, wireless networks or communicate with other devices through a wireless network. The above-mentioned wireless network may include a cellular phone network, a wireless local area network or a metropolitan area network. For example, the network module 806 can interact with a base station for information.

[0113] Please refer to Figure 9 , which shows a structural block diagram of a computer-readable storage medium provided by an embodiment of the present application. Program code is stored in the computer-readable storage medium 900, and the program code can be called by a processor to execute the method described in the above method embodiment.

[0114] The computer-readable storage medium 900 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 900 includes a non-transitory computer-readable storage medium. The computer-readable storage medium 900 has a storage space for the program code 910 that executes any method step in the above method. These program codes can be read out from or written into one or more computer program products. The program code 910 can be compressed in an appropriate form, for example.

[0115] A fault detection method, device, vehicle and storage medium provided by the present application first check whether the power distribution of each power distribution port is normal. If abnormal power distribution is detected, analyze the cause of the abnormal power distribution of the target power distribution port according to the obtained configuration parameters. If the cause of the abnormal power distribution of the target power distribution port is current overload, obtain the port type of the target power distribution port, and based on the port type, perform a preset number of overload fault detections on the target power distribution port. If the cause of the abnormal power distribution of the target power distribution port is still current overload, turn off the target power distribution port. Through the above method, when a real overload phenomenon occurs at the port, the overload port can be turned off more effectively and accurately, reducing the false turn-off rate of power distribution overload.

[0116] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims, and all of them fall within the protection scope of the present invention.

Claims

1. A fault detection method, characterized in that, For on-vehicle intelligent power distribution, the method includes: Checking whether the power distribution of each power distribution port is normal; If abnormal power distribution is detected, analyzing the cause of the abnormal power distribution of the target power distribution port according to the obtained configuration parameters, where the target power distribution port is the power distribution port with abnormal power distribution; If the cause of the abnormal power distribution of the target power distribution port is current overload, obtaining the port type of the target power distribution port; Based on the port type, performing a preset number of overload fault detections on the target power distribution port; If the cause of the abnormal power distribution of the target power distribution port is still current overload, shutting down the target power distribution port.

2. The method according to claim 1, characterized in that The performing a preset number of overload fault detections on the target power distribution port includes: Performing a preset number of operations of shutting down the target power distribution port and then retrying to open the target power distribution port; Performing an overload fault detection on the target power distribution port each time it is reopened, so as to perform a preset number of overload fault detections on the target power distribution port.

3. The method according to claim 2, characterized in that In the preset number of overload fault detections, the interval time between adjacent overload fault detections is a preset time.

4. The method according to claim 1, characterized in that The performing a preset number of overload fault detections on the target power distribution port based on the port type includes: If the port type is a constant power port, performing a first number of overload fault detections on the target power distribution port; If the port type is a non-constant power port, performing a second number of overload fault detections on the target power distribution port, where the first number is different from the second number.

5. The method according to claim 1, characterized in that The checking whether the power distribution of each power distribution port is normal includes: Obtaining the power distribution identifier of each power distribution port; Based on the power distribution identifier, determining whether the power distribution status of each power distribution port is normal; The if abnormal power distribution is detected, analyzing the cause of the abnormal power distribution of the target power distribution port according to the obtained configuration parameters includes: If it is determined that the power distribution status of a power distribution port is abnormal, determining the power distribution port with abnormal power distribution status as the target power distribution port; According to the obtained configuration parameters, determining the cause of the abnormal power distribution of the target power distribution port.

6. The method according to claim 5, wherein The determining the cause of the abnormal power distribution of the target power distribution port according to the obtained configuration parameters includes: Obtaining the fault identifier of the target power distribution port; Based on the fault identifier, determining the cause of the abnormal power distribution of the target power distribution port.

7. The method according to claim 5, characterized in that, The determining the cause of the abnormal power distribution of the target power distribution port according to the obtained configuration parameters includes: Obtaining the current current value of the target power distribution port; Based on the current current value, determining the cause of the abnormal power distribution of the target power distribution port.

8. A fault detection device, characterized in that, For on-vehicle intelligent power distribution, the device includes: A checking unit, configured to check whether the power distribution of each power distribution port is normal; An analyzing unit, configured to, if abnormal power distribution is detected, analyze the cause of the abnormal power distribution of the target power distribution port according to the obtained configuration parameters, where the target power distribution port is the power distribution port with abnormal power distribution; An obtaining unit, configured to, if the cause of the abnormal power distribution of the target power distribution port is current overload, obtain the port type of the target power distribution port; A detecting unit, configured to perform a preset number of overload fault detections on the target power distribution port based on the port type; A control unit, configured to, if the cause of the abnormal power distribution of the target power distribution port is still current overload, shut down the target power distribution port.

9. A vehicle, characterized in that, 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 to perform the method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, Program code is stored in the computer-readable storage medium, wherein the method according to any one of claims 1-7 is performed when the program code is run by a processor.

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