Differential lock fault detection method, device, medium, electronic equipment and vehicle

Abstract

The present disclosure relates to a differential lock fault detection method, device, medium, electronic device and vehicle. The method comprises: obtaining the manual switch state of the rear axle electronic differential lock of the vehicle; when the manual switch state is in the locked state, determining the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle; or, when the manual switch state is in the unlocked state, determining the fault information of the rear axle electronic differential lock according to the rear wheel speed difference or longitudinal acceleration of the vehicle, so that the fault information of the rear axle electronic differential lock of the vehicle can be determined according to the rear wheel speed difference or longitudinal acceleration of the vehicle during driving, so that the differential lock fault can be detected in time, so that the user can handle the fault in time and avoid safety accidents in vehicle handling.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle control, and in particular, to a differential lock fault detection method, device, medium, electronic equipment and vehicle. Background Art

[0002] The differential lock system is part of the vehicle's transmission system, and its main function is to ensure that the transmission system can provide sufficient traction under different road conditions. For example, when one wheel slips, the power can be transferred to the other wheel through the differential lock system to help the vehicle get out of trouble. The differential lock plays a very important role in vehicle driving, especially in complex road conditions. Once the differential lock fails, it may cause damage to vehicle parts and even cause vehicle accidents. However, in related technologies, differential lock failures need to be detected with dedicated detection instruments, which means that differential lock failures cannot be detected in time while the vehicle is driving, which affects the driver's driving experience. Summary of the invention

[0003] The purpose of the present disclosure is to provide a differential lock fault detection method, device, medium, electronic equipment and vehicle to solve the above-mentioned problem in the related art that the differential lock fault cannot be detected in time.

[0004] In a first aspect, the present disclosure provides a differential lock fault detection method, the method comprising:

[0005] Obtain the manual switch status of the vehicle's rear axle electronic differential lock;

[0006] When the manual switch is in a locked state, determining the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle; or

[0007] When the manual switch is in the unlocked state, fault information of the rear axle electronic differential lock is determined according to the rear wheel speed difference or the longitudinal acceleration of the vehicle.

[0008] Optionally, when the manual switch state is in a locked state, determining the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle includes:

[0009] When the manual switch state is the locked state, if the rear wheel speed difference is greater than or equal to a first preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes a locking function failure.

[0010] Optionally, when the manual switch state is an unlocked state, determining the fault information of the rear axle electronic differential lock according to the rear wheel speed difference or longitudinal acceleration of the vehicle includes:

[0011] When the manual switch is in the unlocked state, if the rear wheel speed difference is less than or equal to the second preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes that the differential lock function is completely invalid; or,

[0012] When the manual switch is in the unlocked state, if the longitudinal acceleration is greater than or equal to a preset acceleration threshold, it is determined that the fault information of the rear axle electronic differential lock includes a stability function failure; or,

[0013] When the manual switch state is the unlocked state, if the rear wheel speed difference is greater than or equal to the first preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes a limited slip function failure.

[0014] Optionally, the method further comprises:

[0015] In the case where it is determined that the fault information of the rear axle electronic differential lock includes the failure of the limited slip function, if a manual locking signal of the rear axle differential lock sent by the user is received and the rear wheel speed difference is reduced to less than or equal to the second preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes that the locking function is normal but the limited slip function is failed.

[0016] Optionally, the method further includes displaying the fault information of the rear axle electronic differential lock in one or more of the following ways:

[0017] Displaying a preset fault alarm icon corresponding to the fault information in a constant display area of ​​the display interface of the vehicle;

[0018] In the text prompt area of ​​the display interface, a preset fault prompt text corresponding to the fault information is displayed;

[0019] In the status indication area of ​​the display interface, a preset differential lock icon is displayed, and a preset differential lock fault prompt sound is emitted.

[0020] Optionally, the method further comprises:

[0021] When the rear axle electronic differential lock has no faults, the current working status of the rear axle electronic differential lock is displayed through the display interface of the vehicle.

[0022] In a second aspect, the present disclosure provides a differential lock fault detection device, the device comprising:

[0023] A manual switch status acquisition module is used to acquire the manual switch status of the rear axle electronic differential lock of the vehicle;

[0024] A fault information determination module is used to determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle when the manual switch state is in the locked state; or to determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference or longitudinal acceleration of the vehicle when the manual switch state is in the unlocked state.

[0025] In a third aspect, the present disclosure provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in the first aspect of the present disclosure.

[0026] In a fourth aspect, the present disclosure provides a controller, comprising: a memory on which a computer program is stored; and a processor, configured to execute the computer program in the memory to implement the steps of the method described in the first aspect of the present disclosure.

[0027] In a fifth aspect, the present disclosure provides a vehicle, comprising: the controller described in the fourth aspect of the present disclosure.

[0028] By adopting the above technical scheme, the manual switch state of the rear axle electronic differential lock of the vehicle is obtained; when the manual switch state is a locked state, the fault information of the rear axle electronic differential lock is determined according to the rear wheel speed difference of the vehicle; or, when the manual switch state is an unlocked state, the fault information of the rear axle electronic differential lock is determined according to the rear wheel speed difference or longitudinal acceleration of the vehicle. Therefore, during driving, the fault information of the rear axle electronic differential lock of the vehicle can be determined according to the rear wheel speed difference or longitudinal acceleration of the vehicle, so that the differential lock fault can be detected in time, so that the user can deal with the fault in time to avoid safety accidents caused by vehicle handling.

[0029] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0031] Figure 1 It is a flow chart of a differential lock fault detection method provided by an embodiment of the present disclosure.

[0032] Figure 2 It is a schematic diagram of a display interface provided by an embodiment of the present disclosure.

[0033] Figure 3 It is a structural schematic diagram of a differential lock fault detection device provided in an embodiment of the present disclosure.

[0034] Figure 4 It is a structural schematic diagram of another differential lock fault detection device provided in an embodiment of the present disclosure.

[0035] Figure 5 It is a block diagram of an electronic device provided by an embodiment of the present disclosure.

[0036] Figure 6 It is a block diagram of a vehicle provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0038] It should be noted that, in the present disclosure, words such as "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order; terms such as "S101", "S102", "S201", "S202", etc. are used to distinguish steps, and do not have to be understood as performing method steps in a specific order or sequential order; when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0039] First, the application scenario of the present disclosure is explained. The present disclosure can be applied to the differential lock fault detection scenario, especially the vehicle with the rear axle electronic differential lock. The electronic differential lock is an essential functional part for off-road vehicles. When the wheel on one side slips, it can transfer power to the wheel on the other side to help the vehicle out of trouble. At present, with the improvement of the cost-effectiveness of SUV vehicles and the change of ideas and concepts, more and more people advocate freedom and are keen on outdoor off-road activities. The driving level of car off-road enthusiasts is uneven. For drivers with insufficient off-road experience or low driving skills, they do not understand the off-road equipment system. If the differential lock fails, it will cause damage to the vehicle parts, and serious accidents will cause vehicles. This is very dangerous for the person who is driving. However, in the relevant technology, the differential lock failure needs to be detected by a special detection instrument. The differential lock failure cannot be detected in time during the vehicle driving, which will affect the driver's driving experience.

[0040] In order to solve the above problems, the present disclosure provides a differential lock fault detection method, device, medium, electronic equipment and vehicle. During driving, according to the different manual switch states of the vehicle's rear axle electronic differential lock, the fault information of the vehicle's rear axle electronic differential lock can be determined according to the rear wheel speed difference or longitudinal acceleration of the vehicle, so that the differential lock fault can be detected in time, so that the fault can be handled in time to avoid safety accidents during vehicle handling.

[0041] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0042] Figure 1 A differential lock fault detection method is provided in an embodiment of the present disclosure, such as Figure 1 As shown, the method may include:

[0043] S101. Obtain the manual switch status of the rear axle electronic differential lock of the vehicle.

[0044] For example, the rear axle electronic differential lock of the vehicle may have a manual switch, which may be a physical button, a virtual button or a voice-controlled switch. The user may control the locking and unlocking of the rear axle electronic differential lock through the manual switch, that is, the manual switch state may include a locked state and an unlocked state.

[0045] S102. When the manual switch is in a locked state, determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle; or, when the manual switch is in an unlocked state, determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference or the longitudinal acceleration of the vehicle.

[0046] The above method is adopted to obtain the manual switch state of the rear axle electronic differential lock of the vehicle; when the manual switch state is in the locked state, determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle; or, when the manual switch state is in the unlocked state, determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference or longitudinal acceleration of the vehicle, so that the fault information of the rear axle electronic differential lock of the vehicle can be determined according to the rear wheel speed difference or longitudinal acceleration of the vehicle during driving, so that the differential lock fault can be detected in time, so that the fault can be handled in time to avoid safety accidents caused by vehicle handling.

[0047] It should be noted that in addition to being controlled by a manual switch, the rear axle electronic differential lock of the vehicle can also be automatically locked or unlocked according to the vehicle's driving state and driving parameters. This can prevent the vehicle from slipping, improve the stability of the vehicle, and enhance the driver's driving experience. Of course, the manual switch control priority can be higher than the automatic control priority. Therefore, the rear axle electronic differential lock can be detected in different ways according to the different states of the above-mentioned manual switch. Specifically, it can include any one or more of the following fault detection methods:

[0048] Mode 1: When the manual switch state is in the locked state, if the rear wheel speed difference is greater than or equal to a first preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes a locking function failure.

[0049] The rear wheel speed difference can be used to characterize the absolute value of the difference between the wheel speeds of the left and right wheels behind the vehicle. For example, the wheel speeds of the two wheels can be collected by wheel speed sensors respectively, and the collected wheel speeds can be filtered to avoid calculation errors caused by instantaneous fluctuations.

[0050] The first preset wheel speed difference threshold value can be set according to vehicle parameters and experience values, or can be calibrated according to driving tests of the vehicle under different road conditions. For example, the first preset wheel speed difference threshold value can be any value between 30 revolutions per minute and 80 revolutions per minute, for example, 50 revolutions per minute, 60 revolutions per minute, or 70 revolutions per minute.

[0051] It should be noted that when the manual switch is in the locked state, if the rear wheel speed difference is greater than or equal to the first preset wheel speed difference threshold, it means that the rear left and right wheels cannot be locked, or cannot be fully locked, and the locking function of the rear axle differential fails. At this time, if the vehicle continues to be in an off-road condition that is prone to slipping, once the vehicle slips, the differential lock will not work, resulting in the vehicle being unable to escape. Therefore, it is not recommended that users continue to go off-road, and they need to leave the off-road condition as soon as possible and drive to an after-sales service station for repair of the vehicle.

[0052] Method 2: when the manual switch is in the unlocked state, if the rear wheel speed difference is less than or equal to the second preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes that the differential lock function is completely invalid.

[0053] The second preset wheel speed difference threshold value can also be set according to vehicle parameters and experience values, or can be calibrated according to driving tests of the vehicle under different road conditions. For example, the second preset wheel speed difference threshold value can be any value between 0 rpm and 15 rpm, for example, 5 rpm, 10 rpm or 12 rpm.

[0054] It should be noted that when the manual switch is in the unlocked state, if the rear wheel speed difference is less than or equal to the second preset wheel speed difference threshold, it means that the mechanical structure of the rear axle electronic differential lock is in a locked state, which proves that the friction plate inside the differential has been burned and cannot be separated, resulting in the rear axle electronic differential lock being unable to be unlocked. The inability to unlock the rear axle electronic differential lock is likely to cause vehicle safety accidents.

[0055] Likewise, the above fault information may also include a fault level, and the fault level corresponding to the complete failure of the differential lock function may be a fatal fault.

[0056] Method three: when the manual switch is in the unlocked state, if the longitudinal acceleration of the vehicle is greater than or equal to a preset acceleration threshold, it is determined that the fault information of the rear axle electronic differential lock includes a failure of the stability function.

[0057] The longitudinal acceleration can be measured by the acceleration sensor of the vehicle. Similarly, in order to eliminate the instantaneous fluctuation caused by the surface sensor acquisition error, the collected original longitudinal acceleration can be filtered to avoid calculation errors caused by instantaneous fluctuations.

[0058] Similarly, the preset acceleration threshold can be set according to vehicle parameters and experience values, or can be calibrated according to driving tests of the vehicle under different road conditions. For example, the preset acceleration threshold can be any value between 3 meters per square second and 15 meters per square second, for example, 5 meters per square second, 6 meters per square second or 8 meters per square second.

[0059] It should be noted that when the manual switch is unlocked, if the longitudinal acceleration of the vehicle is greater than or equal to a certain set acceleration threshold, the EGD clutch plate of the vehicle will gradually lock the above rear axle electronic differential lock, thereby controlling the longitudinal acceleration and lateral acceleration of the vehicle speed and stabilizing the vehicle body. If the longitudinal acceleration of the vehicle is greater than or equal to the above preset acceleration threshold, the driver will not be able to control the stability of the vehicle, indicating that the stability function of the rear axle electronic differential lock is invalid and cannot play a role in stability control.

[0060] Mode 4: when the manual switch is in the unlocked state, if the rear wheel speed difference is greater than or equal to the first preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes failure of the limited slip function.

[0061] When the manual switch is in the unlocked state, if the rear wheel speed difference is greater than or equal to a certain set wheel speed difference threshold, the rear axle electronic differential lock will automatically lock to prevent the rear wheel speed difference from being too large. This function can become the limited slip function of the rear axle electronic differential lock. Therefore, when the manual switch is in the unlocked state, if the rear wheel speed difference is greater than or equal to the first preset wheel speed difference threshold, it can be determined that the fault information of the rear axle electronic differential lock includes the failure of the limited slip function.

[0062] Method 5. Further, when it is determined that the fault information of the rear axle electronic differential lock includes the failure of the limited slip function, if a manual locking signal of the rear axle differential lock sent by the user is received, and the rear wheel speed difference is reduced to less than or equal to the second preset wheel speed difference threshold, it is determined that the fault information of the electronic differential lock includes that the locking function is normal but the limited slip function is failed.

[0063] When it is determined through the fourth method above that the fault information of the rear axle electronic differential lock includes the failure of the limited slip function, the user can lock the rear axle electronic differential lock through the manual switch. After manual locking, the rear wheel speed difference will decrease. If the rear wheel speed difference drops to less than or equal to the second preset wheel speed difference threshold, it can be determined that the locking function of the electronic differential lock is normal but the limited slip function is failed.

[0064] In this way, through any one or more of the above-mentioned methods, the fault information of the rear axle electronic differential can be detected timely and accurately, thereby avoiding the vehicle safety hazards caused by the differential failure.

[0065] In another embodiment of the present disclosure, the above different fault information may correspond to different fault levels. In addition, the above different fault information may also correspond to different fault codes and respective fault levels. For example:

[0066] The fault code corresponding to the above-mentioned complete failure of the differential lock function may be 0x1 (indicating a fatal fault - the complete failure of the differential lock function), and the corresponding fault level may be a fatal fault.

[0067] The fault code corresponding to the above-mentioned locking function failure may be 0x2 (indicating a serious fault - locking function failure), and the corresponding fault level may be a serious fault.

[0068] The fault code corresponding to the above-mentioned stability function failure may be 0x3 (indicating partial failure - stability function failure), and the corresponding fault level may be a general fault.

[0069] The fault code corresponding to the above-mentioned limited slip function failure may be 0x4 (indicating a partial fault - limited slip function failure), and the corresponding fault level may also be a general fault.

[0070] The fault code corresponding to the above-mentioned normal locking function but failure of the limited slip function may be 0x5 (indicating a partial fault - the locking function is normal but the limited slip function is failed), and the corresponding fault level may also be a general fault.

[0071] Furthermore, the fault code or fault level can be sent to the vehicle's display device, and the corresponding fault information can be displayed by the display device, so that the user can handle the rear axle electronic differential lock fault differently according to different fault levels to avoid vehicle safety accidents.

[0072] In another embodiment of the present disclosure, the fault information of the rear axle electronic differential lock may also be displayed in one or more of the following ways:

[0073] Display method 1: Display a preset fault alarm icon corresponding to the fault information in the constant display area of ​​the display interface of the vehicle.

[0074] Display method two: in the text prompt area of ​​the display interface, the preset fault prompt text corresponding to the fault information is displayed.

[0075] Display method three: In the status indication area of ​​the display interface, the preset differential lock icon is displayed and the preset differential lock fault prompt sound is emitted.

[0076] The display interface may be a dashboard interface of a vehicle or a display interface of a vehicle-mounted terminal. The display interface may be divided into one or more areas.

[0077] Figure 2 is a schematic diagram of a display interface 200 provided by an embodiment of the present disclosure, such as Figure 2 As shown, the display interface 200 may include three areas: a permanent display area 201 , a text prompt area 202 and a status indication area 203 .

[0078] For example, the method of displaying the rear axle electronic differential lock fault information may also include:

[0079] In the case of the fault information of the above-mentioned differential lock function failure (fault code 0x1) or locking function failure (fault code 0x2) in the rear axle electronic differential lock, the preset differential lock icon of the first preset color can be displayed in the status indication area 203, and the first preset color can be red, orange or dark yellow, accompanied by a preset differential lock fault prompt sound, and the preset differential lock fault prompt sound can be one or more sounds; at the same time, the text "electronic differential lock fault" is displayed in the text prompt area. The display time of the status indication area and the text prompt area can be a preset time, such as 3 seconds. After the preset time, the preset fault alarm icon can be displayed in the constant display area 201.

[0080] In the case of the above-mentioned stability function failure (fault code 0x3), limited slip function failure (fault code 0x4) or normal locking function but limited slip function failure (fault code 0x5) of the rear axle electronic differential lock, the fault information can be stored first, and only the preset fault alarm icon is displayed in the constant display area 201, without directly displaying the specific fault content. When the driver clicks the fault alarm icon, the electronic differential lock partial fault interface can be displayed, including: displaying a preset differential lock icon of a second preset color in the status indication area 203, and the second preset color can be a color lighter than the above-mentioned first preset color, for example, it can be light red, pink, light orange or light yellow; at the same time, the text "electronic differential lock partial fault" is displayed in the text prompt area. The status indication area and the text prompt area can be displayed until the user manually closes them; or they can disappear automatically after being displayed for a certain period of time.

[0081] In this way, through the above-mentioned display interface, different displays can be made according to different fault information. Fatal faults and serious faults can be displayed directly to prompt users to deal with them as soon as possible to avoid vehicle safety accidents; for general faults, only icon prompts can be given, and users can choose to view specific information as needed to avoid affecting the user's driving behavior.

[0082] In another embodiment of the present disclosure, when the rear axle electronic differential lock is not faulty, the current working status of the electronic differential lock can be displayed through the display interface of the vehicle.

[0083] The current working state of the electronic differential lock may include one or more of: unlocked, locked, locked, overspeed alarm, overspeed unlocked, and manually unlocked.

[0084] Each of the above working states may correspond to a different state code so as to distinguish the working states.

[0085] For example, the above-mentioned speeding alarm can be used to indicate that the driving speed of the vehicle is greater than or equal to the first preset driving speed, and is used to prompt the driver that if the driving speed continues to increase, the rear axle electronic differential lock will be unlocked, wherein the first preset driving speed is used to characterize the critical speed condition for the electronic differential lock to be unlocked. The method of displaying the speeding alarm may include: in the status indication area, the preset differential lock icon continues to flash according to the third preset color and the third preset frequency. The present disclosure does not limit the third preset color and the third preset frequency. For example, the third preset color can be yellow, orange or green, and the third preset frequency can be 2HZ, 5HZ or 8HZ, etc.; and, displaying "electronic differential lock speeding alarm" in the text display area.

[0086] Furthermore, if the vehicle's speed continues to increase to a value greater than or equal to the second preset speed, or remains greater than or equal to the first preset speed for more than a certain period of time, the working state of the rear axle electronic differential lock may be changed to overspeed unlocking. The manner of displaying the overspeed unlocking may include: in the status indication area, the preset differential lock icon continuously flashes according to the fourth preset color and the fourth preset frequency, the fourth preset color is a color different from the third preset color, and the fourth preset frequency is a frequency different from the third preset frequency, for example: the third preset color may be yellow or green, the fourth preset color may be red or pink, the third preset frequency may be 2HZ or 5HZ, and the fourth preset frequency may be 1HZ or 0.5HZ; and, displaying "electronic differential lock overspeed unlocking" in the text display area.

[0087] The display method of other working states is similar to the above-mentioned overspeed alarm or overspeed unlocking method, which will not be repeated here.

[0088] In this way, the current working status of the rear axle electronic differential lock can be displayed through the vehicle's display interface, allowing the driver to more intuitively see whether the electronic differential lock is locked and other specific working conditions, thereby improving the vehicle's driving experience.

[0089] Figure 3 is a schematic diagram of the structure of a differential lock fault detection device provided by an embodiment of the present disclosure, such as Figure 3 As shown, the device comprises:

[0090] A manual switch state acquisition module 301 is used to acquire the manual switch state of the rear axle electronic differential lock of the vehicle;

[0091] The fault information determination module 302 is used to determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle when the manual switch state is in the locked state; or, when the manual switch state is in the unlocked state, determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference or longitudinal acceleration of the vehicle.

[0092] Optionally, the fault information determination module 302 is used to determine that the fault information of the rear axle electronic differential lock includes a locking function failure if the rear wheel speed difference is greater than or equal to a first preset wheel speed difference threshold when the manual switch state is in a locked state.

[0093] Optionally, the fault information determination module 302 is configured to:

[0094] When the manual switch is in the unlocked state, if the rear wheel speed difference is less than or equal to the second preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes that the differential lock function is completely invalid; or,

[0095] When the manual switch is in the unlocked state, if the longitudinal acceleration is greater than or equal to the preset acceleration threshold, it is determined that the fault information of the rear axle electronic differential lock includes a stability function failure; or,

[0096] When the manual switch state is the unlocked state, if the rear wheel speed difference is greater than or equal to the first preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes a limited slip function failure.

[0097] Optionally, the fault information determination module 302 is further used to determine that the fault information of the rear axle electronic differential lock includes that the locking function is normal but the limited slip function is invalid if a manual locking signal of the rear axle differential lock sent by the user is received and the rear wheel speed difference is reduced to less than or equal to the second preset wheel speed difference threshold when it is determined that the fault information of the rear axle electronic differential lock includes that the locking function is normal but the limited slip function is invalid.

[0098] Figure 4 is a schematic diagram of the structure of another differential lock fault detection device provided by an embodiment of the present disclosure, such as Figure 4 As shown, the device further includes a display module 401, and the display module 401 is used to display the fault information of the rear axle electronic differential lock in one or more of the following ways:

[0099] Displaying a preset fault alarm icon corresponding to the fault information in the constant display area of ​​the display interface of the vehicle;

[0100] In the text prompt area of ​​the display interface, the preset fault prompt text corresponding to the fault information is displayed;

[0101] In the status indication area of ​​the display interface, the preset differential lock icon is displayed, and a preset differential lock fault prompt sound is emitted.

[0102] Optionally, the display module 401 is used to display the current working status of the rear axle electronic differential lock through the display interface of the vehicle when the rear axle electronic differential lock is not faulty.

[0103] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0104] Figure 5 FIG. 5 is a block diagram of an electronic device 500 according to an exemplary embodiment. Figure 5 As shown, the electronic device 500 may include: a processor 501 and a memory 502. The electronic device 500 may also include one or more of a multimedia component 503, an input / output (I / O) interface 504, and a communication component 505.

[0105] The processor 501 is used to control the overall operation of the electronic device 500 to complete all or part of the steps in the differential lock fault detection method described above. The memory 502 is used to store various types of data to support the operation of the electronic device 500, and these data may include, for example, instructions for any application or method used to operate on the electronic device 500, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 502 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 503 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 502 or sent through the communication component 505. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 504 provides an interface between the processor 501 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 505 is used for wired or wireless communication between the electronic device 500 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, 5G, NB-IOT, eMTC, or other 6G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 505 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0106] In an exemplary embodiment, the electronic device 500 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned differential lock fault detection method.

[0107] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned differential lock fault detection method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 502 including program instructions, and the above-mentioned program instructions can be executed by the processor 501 of the electronic device 500 to complete the above-mentioned differential lock fault detection method.

[0108] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program executable by a programmable device. The computer program has a code portion for executing the above differential lock fault detection method when executed by the programmable device.

[0109] Figure 6 is a block diagram of a vehicle provided by an embodiment of the present disclosure, such as Figure 6 As shown, the vehicle may include: the electronic device 500 mentioned above.

[0110] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0111] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0112] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A differential lock fault detection method, characterized in that: The method comprises: Obtain the manual switch status of the vehicle's rear axle electronic differential lock; When the manual switch is in a locked state, determining fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle; When the manual switch is in a locked state, determining the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle includes: When the manual switch state is in the locked state, if the rear wheel speed difference is greater than or equal to a first preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes a locking function failure; When the manual switch is in an unlocked state, determining fault information of the rear axle electronic differential lock according to the rear wheel speed difference or longitudinal acceleration of the vehicle; When the manual switch is in the unlocked state, determining the fault information of the rear axle electronic differential lock according to the rear wheel speed difference or the longitudinal acceleration of the vehicle includes: When the manual switch is in the unlocked state, if the rear wheel speed difference is less than or equal to a second preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes that the differential lock function is completely invalid; When the manual switch state is the unlocked state, if the longitudinal acceleration is greater than or equal to the preset acceleration threshold, it is determined that the fault information of the rear axle electronic differential lock includes a stability function failure; When the manual switch is in the unlocked state, if the rear wheel speed difference is greater than or equal to a first preset wheel speed difference threshold, determining that the fault information of the rear axle electronic differential lock includes a limited slip function failure; The method further comprises: In the case where it is determined that the fault information of the rear axle electronic differential lock includes the failure of the limited slip function, if a manual locking signal of the rear axle differential lock sent by the user is received and the rear wheel speed difference is reduced to less than or equal to the second preset wheel speed difference threshold, it is determined that the fault information of the rear axle electronic differential lock includes that the locking function is normal but the limited slip function is failed.

2. The method according to claim 1, characterized in that The method further includes displaying the fault information of the rear axle electronic differential lock in one or more of the following ways: Displaying a preset fault alarm icon corresponding to the fault information in a constant display area of ​​the display interface of the vehicle; In the text prompt area of ​​the display interface, a preset fault prompt text corresponding to the fault information is displayed; In the status indication area of ​​the display interface, a preset differential lock icon is displayed, and a preset differential lock fault prompt sound is emitted.

3. The method according to claim 1, characterized in that The method further comprises: When the rear axle electronic differential lock has no faults, the current working status of the rear axle electronic differential lock is displayed through the display interface of the vehicle.

4. A differential lock fault detection device, characterized in that: The device comprises: A manual switch status acquisition module is used to acquire the manual switch status of the rear axle electronic differential lock of the vehicle; The first fault information determination module is used to determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle when the manual switch state is in the locked state; determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference or longitudinal acceleration of the vehicle when the manual switch state is in the unlocked state; when the manual switch state is in the locked state, determine the fault information of the rear axle electronic differential lock according to the rear wheel speed difference of the vehicle including: when the manual switch state is in the locked state, if the rear wheel speed difference is greater than or equal to a first preset wheel speed difference threshold, determine that the fault information of the rear axle electronic differential lock includes a locking function failure; when the manual switch state is in the unlocked state, determine that the rear axle electronic differential lock has a locking function failure. In the case of the manual switch state, determining the fault information of the rear axle electronic differential lock according to the rear wheel speed difference or the longitudinal acceleration of the vehicle includes: when the manual switch state is the unlocked state, if the rear wheel speed difference is less than or equal to the second preset wheel speed difference threshold, determining that the fault information of the rear axle electronic differential lock includes the complete failure of the differential lock function; when the manual switch state is the unlocked state, if the longitudinal acceleration is greater than or equal to the preset acceleration threshold, determining that the fault information of the rear axle electronic differential lock includes the failure of the stability function; when the manual switch state is the unlocked state, if the rear wheel speed difference is greater than or equal to the first preset wheel speed difference threshold, determining that the fault information of the rear axle electronic differential lock includes the failure of the limited slip function; The second fault information determination module is used to determine that the fault information of the rear axle electronic differential lock includes that the locking function is normal but the limited slip function is invalid if a manual locking signal of the rear axle differential lock sent by a user is received and the rear wheel speed difference is reduced to less than or equal to the second preset wheel speed difference threshold when it is determined that the fault information of the rear axle electronic differential lock includes that the locking function is normal but the limited slip function is invalid.

5. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are implemented.

6. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 3.

7. A vehicle, characterized in that: The vehicle includes the electronic device according to claim 6.

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