CN114838946A - Differential lock fault detection method and device, medium, electronic equipment and vehicle - Google Patents

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

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Publication number
CN114838946A
CN114838946A CN202110758819.4A CN202110758819A CN114838946A CN 114838946 A CN114838946 A CN 114838946A CN 202110758819 A CN202110758819 A CN 202110758819A CN 114838946 A CN114838946 A CN 114838946A
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China
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differential lock
vehicle
state
rear axle
fault
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Chinese (zh)
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黄旭宁
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms

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Abstract

The disclosure relates to a differential lock fault detection method, a differential lock fault detection device, a medium, electronic equipment and a vehicle. The method comprises the following steps: the method comprises the steps of obtaining the state of a manual switch of a rear axle electronic differential lock of a vehicle; determining fault information of the rear axle electronic differential lock according to the wheel speed difference of the rear wheels of the vehicle under the condition that the manual switch state is a locking state; or, under the condition that the manual switch state is the unlocking state, the 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, 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 the longitudinal acceleration of the vehicle in the driving process, the differential lock fault can be detected in time, a user can process the fault in time, and the safety accident caused by vehicle processing is avoided.

Description

Differential lock fault detection method and device, medium, electronic equipment and vehicle
Technical Field
The disclosure relates to the field of vehicle control, in particular to a differential lock fault detection method, a differential lock fault detection device, a differential lock fault detection medium, electronic equipment and a vehicle.
Background
The differential lock system is part of a vehicle transmission system, and the main function of the differential lock system is to ensure that the transmission system can provide enough traction under different road conditions. For example, when one wheel slips, power can be transmitted to the other wheel through the differential lock system to help the vehicle break out of the predicament. The differential lock has a great effect on vehicle driving, particularly vehicle driving under complex road conditions, and once the differential lock breaks down, parts of the vehicle can be damaged, and vehicle accidents can be caused seriously. However, in the related art, the differential lock fault needs to be detected by a special detecting instrument, so that the driver's driving experience is affected because the differential lock fault cannot be detected in time during the driving of the vehicle.
Disclosure of Invention
The present disclosure provides a method, an apparatus, a medium, an electronic device and a vehicle for detecting a differential lock fault, so as to solve the problem in the related art that the differential lock fault cannot be detected in time.
In a first aspect, the present disclosure provides a differential lock fault detection method, including:
acquiring a manual switch state of a rear axle electronic differential lock of a vehicle;
determining fault information of the rear axle electronic differential lock according to the wheel speed difference of the rear wheels of the vehicle under the condition that the manual switch state is a locking state; alternatively, the first and second electrodes may be,
and under the condition that the state of the manual switch is an unlocking state, determining the fault information of the rear axle electronic differential lock according to the wheel speed difference or the longitudinal acceleration of the rear wheels of the vehicle.
Optionally, when the manual switch state is 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:
and under the condition that the manual switch state is a locking state, if the rear wheel speed difference is greater than or equal to a first preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises failure of a locking function.
Optionally, when the manual switch state is an unlocked state, determining the fault information of the rear axle electronic differential lock according to a rear wheel speed difference or a longitudinal acceleration of the vehicle includes:
under the condition that the state of the manual switch is an unlocking state, if the wheel speed difference of the rear wheels is smaller than or equal to a second preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises that all functions of the differential lock are invalid; alternatively, the first and second electrodes may be,
under the condition that the state of the manual switch is an unlocking state, if the longitudinal acceleration is greater than or equal to a preset acceleration threshold value, determining that the fault information of the rear axle electronic differential lock comprises a stability function failure; alternatively, the first and second electrodes may be,
and under the condition that the state of the manual switch is an unlocking state, if the wheel speed difference of the rear wheels is greater than or equal to the first preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises the failure of the limited slip function.
Optionally, the method further comprises:
and under the condition that the fault information of the rear axle electronic differential lock is determined to include that the limited slip function is invalid, if a rear axle differential lock manual locking signal sent by a user is received and the rear wheel speed difference is reduced to be less than or equal to the second preset wheel speed difference threshold value, determining 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.
Optionally, the method further comprises displaying fault information of the rear axle electronic differential lock by one or more of the following ways:
displaying a preset fault alarm icon corresponding to the fault information in a normally displayed area of a display interface of the vehicle;
displaying preset fault prompting characters corresponding to the fault information in a character prompting area of the display interface;
and displaying a preset differential lock icon in a state indication area of the display interface, and sending a preset differential lock fault prompt tone.
Optionally, the method further comprises:
and under the condition that the rear axle electronic differential lock has no fault, displaying the current working state of the rear axle electronic differential lock through a display interface of the vehicle.
In a second aspect, the present disclosure provides a differential lock fault detection apparatus, the apparatus comprising:
the manual switch state acquisition module is used for acquiring the manual switch state of a rear axle electronic differential lock of the vehicle;
the fault information determination module is used for determining the fault information of the rear axle electronic differential lock according to the wheel speed difference of the rear wheels of the vehicle under the condition that the manual switch state is the locking state; or determining the fault information of the rear axle electronic differential lock according to the wheel speed difference or the longitudinal acceleration of the rear wheels of the vehicle under the condition that the manual switch state is the unlocking state.
In a third aspect, the present disclosure provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of the first aspect of the present disclosure.
In a fourth aspect, the present disclosure provides a controller comprising: a memory having a computer program stored thereon; a processor for executing the computer program in the memory to implement the steps of the method of the first aspect of the disclosure.
In a fifth aspect, the present disclosure provides a vehicle comprising: the controller according to the fourth aspect of the present disclosure.
By adopting the technical scheme, the state of a manual switch of the rear axle electronic differential lock of the vehicle is obtained; determining fault information of the rear axle electronic differential lock according to the wheel speed difference of the rear wheels of the vehicle under the condition that the manual switch state is a locking state; or, under the condition that the manual switch state is the unlocking state, the 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, 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 the longitudinal acceleration of the vehicle in the driving process, the differential lock fault can be detected in time, a user can process the fault in time, and the safety accident caused by vehicle processing is avoided.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a flowchart of a differential lock fault detection method according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a display interface provided in an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of a differential lock fault detection device provided in an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of another differential lock fault detection device provided in the embodiment of the present disclosure.
Fig. 5 is a block diagram of an electronic device provided by an embodiment of the present disclosure.
Fig. 6 is a block diagram of a vehicle provided by an embodiment of the present disclosure.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
It is noted that, in the present disclosure, the terms "first," "second," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, nor for purposes of indicating or implying order; the terms "S101", "S102", "S201", "S202", etc. are used to distinguish the steps and are not necessarily to be construed as performing method steps in a particular order or sequence; when the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.
First, an application scenario of the present disclosure will be explained. The method and the device can be applied to a differential lock fault detection scene, in particular to a vehicle with a rear axle electronic differential lock. The electronic differential lock is a necessary functional part of a cross-country vehicle, and when a wheel on one side slips, power can be transmitted to a wheel on the other side, so that the vehicle is helped to break away from the predicament. At present, along with the improvement of the cost performance of an SUV (sports utility vehicle), thought concept transformation, more and more people advocate freely and enthusiast outdoor off-road activities, the driving level of off-road automobile enthusiasts is uneven, drivers with insufficient off-road experience or low driving skills cannot know the off-road equipment system, if the differential lock breaks down, automobile parts can be damaged, vehicle accidents can be seriously caused, and the automobile is very dangerous for the driving personnel. However, in the related art, the differential lock fault needs to be detected by a special detecting instrument, and the driving experience of a driver can be influenced because the differential lock fault cannot be detected in time during the driving of a vehicle.
In order to solve the problems, the present disclosure provides a method, an apparatus, a medium, an electronic device and a vehicle for detecting a fault of a differential lock, wherein during a driving process, according to a difference of a manual switch state of a rear axle electronic differential lock of the vehicle, fault information of the rear axle electronic differential lock of the vehicle can be determined according to a rear wheel speed difference or a longitudinal acceleration of the vehicle, so that the fault of the differential lock can be detected in time, the fault can be processed in time, and a safety accident in vehicle processing can be avoided.
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings.
Fig. 1 is a method for detecting a differential lock fault according to an embodiment of the present disclosure, and as shown in fig. 1, the method may include:
s101, acquiring a manual switch state of a rear axle electronic differential lock of the vehicle.
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 control switch, and a 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.
S102, determining fault information of the rear axle electronic differential lock according to the wheel speed difference of the rear wheels of the vehicle under the condition that the manual switch state is a locking state; or, when the manual switch state is 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.
By adopting the method, the manual switch state of the rear axle electronic differential lock of the vehicle is obtained; determining fault information of the rear axle electronic differential lock according to the wheel speed difference of the rear wheels of the vehicle under the condition that the manual switch state is a locking state; or, under the condition that the manual switch state is the unlocking state, the 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, 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 the longitudinal acceleration of the vehicle in the driving process, the differential lock fault can be detected in time, the fault can be processed in time, and the safety accident caused by vehicle processing can be avoided.
It should be noted that, the rear axle electronic differential lock of the vehicle can be controlled by a manual switch, and can be automatically locked or unlocked according to the driving state and driving parameters of the vehicle, so that the vehicle can be prevented from slipping, the stability of the vehicle is improved, and the driving experience of a driver is improved. Of course, the manual switch control priority may be higher than the automatic control priority. Therefore, the rear axle electronic differential lock can be detected in different modes according to different states of the manual switch. Specifically, any one or more of the following fault detection modes may be included:
in a first mode, when the manual switch state is the locking state, if the rear wheel speed difference is greater than or equal to a first preset wheel speed difference threshold value, it is determined that the fault information of the rear axle electronic differential lock includes that the locking function is invalid.
Wherein, the difference in rear wheel speed can be used to characterize the absolute value of the difference in the left and right wheel speeds behind the vehicle. For example, the wheel speeds of two wheels can be respectively collected through a wheel speed sensor, and the collected wheel speeds can be subjected to filtering processing, so that calculation errors caused by instantaneous fluctuation are avoided.
The first preset wheel speed difference threshold value can be set according to vehicle parameters and experience values, and can also be calibrated according to driving tests of vehicles under different road conditions. For example, the first preset wheel speed difference threshold may 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.
When the manual switch state is the locked state, if the rear wheel speed difference is greater than or equal to the first preset wheel speed difference threshold value, it is indicated that the rear left and right wheels cannot be locked, or cannot be completely locked, and the locking function of the rear axle differential fails. At this time, if the vehicle continues to be on an off-road condition where the vehicle is likely to slip, once the vehicle slips, the differential lock does not function, and the vehicle cannot get out of position. Therefore, users are not advised to continue off-road, to drive away from off-road conditions as quickly as possible, and to drive to an after-market service station for vehicle maintenance.
And in a second mode, under the condition that the manual switch state is the unlocking state, if the rear wheel speed difference is less than or equal to a second preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises that all the functions of the differential lock are invalid.
The second preset wheel speed difference threshold value can be set according to the parameters and experience values of the whole vehicle, and can also be calibrated according to driving tests of the vehicle under different road conditions. For example, the second preset wheel speed difference threshold may be any value between 0 rpm and 15 rpm, for example, 5 rpm, 10 rpm, or 12 rpm.
It should be noted that, under the condition that the manual switch state is the unlocking state, if the rear wheel speed difference is less than or equal to the second preset wheel speed difference threshold value, it indicates that the mechanical structure of the rear axle electronic differential lock is in the locking state at this time, and it is proved that the friction plate inside the differential is ablated and cannot be separated, so that the rear axle electronic differential lock cannot be unlocked, and the rear axle electronic differential lock cannot be unlocked, which easily causes a vehicle safety accident.
Likewise, the above-mentioned failure information may further include a failure level, and the failure level corresponding to the total failure of the differential lock function may be a fatal failure.
And in a third mode, under the condition that the state of the manual switch is the unlocking state, if the longitudinal acceleration of the vehicle is greater than or equal to a preset acceleration threshold value, determining that the fault information of the rear axle electronic differential lock comprises the failure of the stability function.
The longitudinal acceleration can be measured according to an acceleration sensor of the vehicle, instantaneous fluctuation caused by errors is collected by a surface sensor, filtering processing can be carried out on the collected original longitudinal acceleration, and calculation errors caused by the instantaneous fluctuation are avoided.
Similarly, the preset acceleration threshold value can be set according to the parameters and empirical values of the whole vehicle, and can also be calibrated according to driving tests of the vehicle under different road conditions. Illustratively, the preset acceleration threshold may 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.
When the manual switch state is the unlocked state, if the longitudinal acceleration of the vehicle is greater than or equal to a certain set acceleration threshold value, the EGD clutch plate of the vehicle gradually locks the rear axle electronic differential lock, so that the longitudinal acceleration and the lateral acceleration of the vehicle speed can be controlled, and the vehicle body can be stabilized. If the longitudinal acceleration of the vehicle is greater than or equal to the preset acceleration threshold, the stability of the vehicle is uncontrollable by a driver, which means that the stability function of the rear axle electronic differential lock is invalid and cannot play a role in stable control.
And if the rear wheel speed difference is greater than or equal to the first preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises the failure of the limited slip function.
Under the condition that the manual switch state is the unlocking state, if the rear wheel speed difference is larger than or equal to a certain set wheel speed difference threshold value, the rear axle electronic differential lock can be automatically locked so as to avoid the rear wheel speed difference from being too large, and the function can be used as the slip limiting function of the rear axle electronic differential lock. Therefore, 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 may be determined that the fault information of the rear axle electronic differential lock includes the limited slip function failure.
In a fifth mode, further, under the condition that it is determined that the fault information of the rear axle electronic differential lock includes that 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 wheel speed difference of the rear wheels is reduced to be less than or equal to the second preset wheel speed difference threshold value, 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 invalid.
And if the rear wheel speed difference is reduced to be less than or equal to the second preset wheel speed difference threshold value, the locking function of the electronic differential lock is normal but the limited slip function is invalid.
Therefore, by any one or more of the above modes, the fault information of the rear axle electronic differential can be timely and accurately detected, so that the potential safety hazard of the vehicle caused by the fault of the differential is avoided.
In another embodiment of the present disclosure, the different fault information may correspond to different fault levels, and in addition, the different fault information may also correspond to different fault codes and correspond to respective fault levels, for example:
the fault code corresponding to the above-described all-out-of-differential-lock function may be 0x1 (indicating a fatal fault — all-out-of-differential-lock function), and the corresponding fault level may be a fatal fault.
The above-described locking function failure may correspond to a fault code of 0x2 (indicating a serious fault — locking function failure), and the corresponding fault level may be a serious fault.
The fault code corresponding to the above-described stability failure may be 0x3 (indicating partial fault-stability failure), and the corresponding fault level may be a general fault.
The fault code corresponding to the limited slip function failure may be 0x4 (indicating partial fault — limited slip function failure), and the corresponding fault level may also be a general fault.
The fault code corresponding to normal locking function but failed sliding limit function may be 0x5 (indicating partial fault-normal locking function but failed sliding limit function), and the corresponding fault level may also be general fault.
Furthermore, the fault code or the fault level can be sent to the display equipment of the vehicle, the corresponding fault information is displayed through the display equipment, a user can conveniently carry out different processing on the fault of the rear axle electronic differential lock according to different fault levels, and safety accidents of the vehicle are avoided.
In another embodiment of the present disclosure, the fault information of the rear axle electronic differential lock can be displayed by one or more of the following ways:
and in the first display mode, displaying a preset fault alarm icon corresponding to the fault information in a normally displayed area of a display interface of the vehicle.
And displaying a preset fault prompt text corresponding to the fault information in a text prompt area of the display interface.
And displaying a preset differential lock icon in a state indication area of the display interface, and sending a preset differential lock fault prompt tone.
The display interface can be an instrument panel interface of the vehicle or a display interface of the vehicle-mounted terminal. The display interface may be divided into one or more regions.
Fig. 2 is a schematic diagram of a display interface 200 provided in an embodiment of the present disclosure, and as shown in fig. 2, the display interface 200 may include three regions: a normally-displayed area 201, a text prompt area 202 and a status indication area 203.
For example, the manner for displaying the fault information of the rear axle electronic differential lock may further include:
in the case of the rear axle electronic differential lock having fault information of the above-mentioned differential lock function complete failure (fault code 0x1) or locking function failure (fault code 0x2), a preset differential lock icon of a first preset color may be displayed in the status indication area 203, the first preset color may be red, orange or dark yellow, and accompanied by a preset differential lock fault prompt tone, and the preset differential lock fault prompt tone may be one or more tones; meanwhile, the words 'electronic differential lock fault' are displayed in the word prompt area. The display time of the status indication area and the text prompt area can be a preset time, for example, 3 seconds. After the preset time is exceeded, a preset malfunction alert icon may be displayed in the always-on display area 201.
In the case that the rear axle electronic differential lock has fault information 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), the fault information may be stored first, and only the preset fault alarm icon is displayed in the normally displayed area 201, and the specific fault content is not directly displayed. When the driver clicks the fault warning icon, the fault interface of the differential lock part can be electronically controlled, and the fault warning icon comprises the following steps: displaying a preset differential lock icon in a second preset color in the status indication area 203, where the second preset color may be a light color, such as light red, pink, light orange, or light yellow; meanwhile, the text "failure of the electronic differential lock portion" is displayed in the text prompt area. The status indication area and the text prompt area can be displayed until the user manually closes; or automatically disappear after being displayed for a certain time.
Therefore, different displays can be carried out according to different fault information through the display interface, and fatal faults and serious faults can be directly displayed so as to prompt a user to process as soon as possible and avoid safety accidents of vehicles; and for general faults, only icon prompt can be given, and a user can select to view specific information according to needs, so that the driving behavior of the user is prevented from being influenced.
In another embodiment of the present disclosure, in the case that the rear axle electronic differential lock has no fault, the current working state of the electronic differential lock can be displayed through a display interface of the vehicle.
Wherein, the current working state of the electronic differential lock may include: one or more of unlocked, locked denied, overspeed warning, overspeed unlocked and manual unlocked.
Each of the above-mentioned operating states may correspond to a different state code in order to distinguish the operating states.
For example, the overspeed alarm may be used to indicate that the running speed of the vehicle is greater than or equal to a first preset running speed, which is used to indicate that the electronic differential lock is about to be unlocked, and prompt the driver that the electronic differential lock is about to be unlocked if the running speed continues to increase. The manner of presenting the overspeed alarm may include: in the status indication area, the preset differential lock icon continuously flickers according to a third preset color and a third preset frequency, which are not limited in the present disclosure, for example, the third preset color may be yellow, orange or green, and the third preset frequency may be 2HZ, 5HZ, 8HZ, or the like; and displaying 'electronic differential lock overspeed alarm' in the character display area.
Further, if the running speed of the vehicle continues to be increased to be greater than or equal to the second preset running speed, or is maintained to be greater than or equal to the first preset running speed for a certain time, the operating state of the rear axle electronic differential lock may be changed to overspeed unlocking. The manner of demonstrating the overspeed unlocking may include: in the state indication area, the preset differential lock icon continuously flickers according to a fourth preset color and a 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 0.5 HZ; and displaying 'electronic differential lock overspeed unlocking' in the character display area.
The display mode of other working states is similar to the overspeed alarm or overspeed unlocking mode, and the detailed description is omitted here.
Like this, can demonstrate the current operating condition of rear axle electron differential lock through the show interface of vehicle for the driver is more audio-visual sees whether specific behavior such as locking of electron differential lock, promotes the driving experience of vehicle.
Fig. 3 is a schematic structural diagram of a differential lock fault detection device provided in an embodiment of the present disclosure, and as shown in fig. 3, the differential lock fault detection device includes:
a manual switch state acquisition module 301, configured to acquire a manual switch state of a rear axle electronic differential lock of a vehicle;
a fault information determination module 302, configured to determine fault information of the rear axle electronic differential lock according to a wheel speed difference of a rear wheel of the vehicle when the manual switch state is a locked state; or, when the manual switch state is 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.
Optionally, the fault information determining module 302 is configured 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 value when the manual switch state is the locking state.
Optionally, the fault information determining module 302 is configured to:
under the condition that the state of the manual switch is an unlocking state, if the wheel speed difference of the rear wheel is less than or equal to a second preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises that all functions of the differential lock are invalid; alternatively, the first and second electrodes may be,
under the condition that the state of the manual switch is an unlocking state, if the longitudinal acceleration is greater than or equal to a preset acceleration threshold value, determining that the fault information of the rear axle electronic differential lock comprises a stability function failure; alternatively, the first and second electrodes may be,
and under the condition that the state of the manual switch is an unlocking state, if the wheel speed difference of the rear wheel is greater than or equal to the first preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises the failure of the limited slip function.
Optionally, the fault information determining module 302 is further configured to, when it is determined that the fault information of the rear axle electronic differential lock includes that 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 be less than or equal to the second preset wheel speed difference threshold, 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.
Fig. 4 is a schematic structural diagram of another differential lock fault detection device provided in the embodiment of the present disclosure, and as shown in fig. 4, the device further includes a display module 401, where the display module 401 is configured to display fault information of the rear axle electronic differential lock by one or more of the following manners:
displaying a preset fault alarm icon corresponding to the fault information in a frequently displayed area of a display interface of the vehicle;
displaying preset fault prompting characters corresponding to the fault information in a character prompting area of the display interface;
and displaying a preset differential lock icon in a state indication area of the display interface, and sending a preset differential lock fault prompt tone.
Optionally, the display module 401 is configured to display the current working state of the rear axle electronic differential lock through a display interface of the vehicle when the rear axle electronic differential lock is not faulty.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 5 is a block diagram illustrating an electronic device 500 in accordance with an example embodiment. As shown in fig. 5, 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.
The processor 501 is configured to control the overall operation of the electronic device 500, so as to complete all or part of the steps in the differential lock fault detection method. The memory 502 is used to store various types of data to support operation at the electronic device 500, such as instructions for any application or method operating on the electronic device 500 and application-related data, such as contact data, messaging, pictures, audio, video, and the like. The Memory 502 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia component 503 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 502 or transmitted through the communication component 505. The audio assembly 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, such as a keyboard, mouse, 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, or a combination of one or more of them, which is not limited herein. The corresponding communication component 505 may thus comprise: Wi-Fi module, Bluetooth module, NFC module, etc.
In an exemplary embodiment, the electronic Device 500 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the differential lock fault detection method described above.
In another exemplary embodiment, a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the differential lock fault detection method described above is also provided. For example, the computer readable storage medium may be the memory 502 described above including program instructions that are executable by the processor 501 of the electronic device 500 to perform the differential lock fault detection method described above.
In another exemplary embodiment, a computer program product is also provided, which comprises a computer program executable by a programmable apparatus, the computer program having code portions for performing the differential lock fault detection method described above when executed by the programmable apparatus.
Fig. 6 is a block diagram of a vehicle provided in an embodiment of the present disclosure, and as shown in fig. 6, the vehicle may include: the electronic device 500 described above.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A differential lock fault detection method, characterized in that the method comprises:
acquiring a manual switch state of a rear axle electronic differential lock of a vehicle;
determining fault information of the rear axle electronic differential lock according to the wheel speed difference of the rear wheels of the vehicle under the condition that the manual switch state is a locking state; alternatively, the first and second electrodes may be,
and under the condition that the state of the manual switch is an unlocking state, determining the fault information of the rear axle electronic differential lock according to the wheel speed difference or the longitudinal acceleration of the rear wheels of the vehicle.
2. The method according to claim 1, wherein determining the failure information of the rear axle electronic differential lock based on the rear wheel speed difference of the vehicle in the case where the manual switch state is the locked state comprises:
and under the condition that the manual switch state is a locking state, if the rear wheel speed difference is greater than or equal to a first preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises failure of a locking function.
3. The method according to claim 1, wherein determining the failure information of the rear axle electronic differential lock according to the rear wheel speed difference or the longitudinal acceleration of the vehicle in the case that the manual switch state is the unlocked state comprises:
under the condition that the state of the manual switch is an unlocking state, if the wheel speed difference of the rear wheels is smaller than or equal to a second preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises that all functions of the differential lock are invalid; alternatively, the first and second electrodes may be,
under the condition that the state of the manual switch is an unlocking state, if the longitudinal acceleration is greater than or equal to a preset acceleration threshold value, determining that the fault information of the rear axle electronic differential lock comprises a stability function failure; alternatively, the first and second electrodes may be,
and under the condition that the state of the manual switch is an unlocking state, if the wheel speed difference of the rear wheels is greater than or equal to the first preset wheel speed difference threshold value, determining that the fault information of the rear axle electronic differential lock comprises the failure of the limited slip function.
4. The method of claim 3, further comprising:
and under the condition that the fault information of the rear axle electronic differential lock is determined to include that the limited slip function is invalid, if a rear axle differential lock manual locking signal sent by a user is received and the rear wheel speed difference is reduced to be less than or equal to the second preset wheel speed difference threshold value, determining 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. The method according to any one of claims 1 to 4, further comprising presenting fault information of the rear axle electronic differential lock by one or more of:
displaying a preset fault alarm icon corresponding to the fault information in a normally displayed area of a display interface of the vehicle;
displaying preset fault prompting characters corresponding to the fault information in a character prompting area of the display interface;
and displaying a preset differential lock icon in a state indication area of the display interface, and sending a preset differential lock fault prompt tone.
6. The method according to any one of claims 1 to 4, further comprising:
and under the condition that the rear axle electronic differential lock has no fault, displaying the current working state of the rear axle electronic differential lock through a display interface of the vehicle.
7. A differential lock fault detection device, characterized in that the device comprises:
the manual switch state acquisition module is used for acquiring the manual switch state of a rear axle electronic differential lock of the vehicle;
the fault information determination module is used for determining the fault information of the rear axle electronic differential lock according to the wheel speed difference of the rear wheels of the vehicle under the condition that the manual switch state is the locking state; or determining the fault information of the rear axle electronic differential lock according to the wheel speed difference or the longitudinal acceleration of the rear wheels of the vehicle under the condition that the manual switch state is the unlocking state.
8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
9. An electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 1 to 6.
10. A vehicle characterized in that the vehicle comprises the electronic device of claim 9.
CN202110758819.4A 2021-07-05 2021-07-05 Differential lock fault detection method and device, medium, electronic equipment and vehicle Pending CN114838946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110758819.4A CN114838946A (en) 2021-07-05 2021-07-05 Differential lock fault detection method and device, medium, electronic equipment and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110758819.4A CN114838946A (en) 2021-07-05 2021-07-05 Differential lock fault detection method and device, medium, electronic equipment and vehicle

Publications (1)

Publication Number Publication Date
CN114838946A true CN114838946A (en) 2022-08-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110758819.4A Pending CN114838946A (en) 2021-07-05 2021-07-05 Differential lock fault detection method and device, medium, electronic equipment and vehicle

Country Status (1)

Country Link
CN (1) CN114838946A (en)

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