Alarm method and device for vehicle friction plate and vehicle

Abstract

The application discloses a kind of vehicle friction plate warning method, device and vehicle.Therein, the method comprises: obtaining the measured front transmission torque value of vehicle;In response to the speed difference value of vehicle being greater than the preset speed difference value, or the acceleration state of vehicle is preset acceleration state, the count number of measured front transmission torque value is input to vehicle alarm information, wherein the speed difference value is the difference between the front wheel speed and rear wheel speed of vehicle, and the alarm information is used to indicate the wear degree of the friction plate of vehicle.The application solves the technical problem of low warning accuracy of the warning of the friction plate of vehicle.

Description

Technical Field

[0001] This invention relates to the field of vehicle data processing, and more specifically, to an alarm method, device, and vehicle for vehicle friction pads. Background Technology

[0002] With the continuous development of my country's social economy, the number of vehicles is increasing every year. The rise of off-road sports has made four-wheel drive vehicles increasingly popular among users. Faced with the pressure of rising fuel prices, on-demand four-wheel drive vehicles that can intelligently switch between four-wheel drive and two-wheel drive modes have become the first choice for four-wheel drive enthusiasts. On-demand four-wheel drive vehicles transmit power through an on-demand transfer case. The transfer case contains friction plates, and the switching between two-wheel drive and four-wheel drive is achieved through the engagement and disengagement of these friction plates. During engagement, the friction plates will experience slippage and wear. Furthermore, if the vehicle is in four-wheel drive mode and continuously trying to get out of trouble, the friction plates will wear out more rapidly. If the wear reaches a certain level, the friction plates will burn, causing the vehicle to lose its four-wheel drive function. Therefore, it is necessary to provide warnings about the vehicle's friction plates to avoid safety accidents.

[0003] However, in related technologies, the warning for vehicle friction pads mainly relies on the user actively disassembling the transfer case to inspect the friction pads, which leads to a low accuracy rate in warning for vehicle friction pads.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides an alarm method, device, and vehicle for vehicle friction pads, to at least solve the technical problem of low warning accuracy for vehicle friction pads.

[0006] According to one aspect of the present invention, an alarm method for vehicle friction pads is provided, comprising: acquiring a measured forward torque value of the vehicle; and, in response to a speed difference of the vehicle being greater than a preset speed difference, or the vehicle being in a preset acceleration state, inputting alarm information to the vehicle based on a count of the measured forward torque value, wherein the speed difference is the difference between the speed of the front wheels and the speed of the rear wheels of the vehicle, and the alarm information is used to indicate the degree of wear of the vehicle's friction pads.

[0007] Optionally, in response to the vehicle's speed difference being greater than a preset speed difference, an alarm message is output to the vehicle based on the count of the measured forward torque value, including: in response to the vehicle's speed difference being greater than the preset speed difference, comparing the measured forward torque value with the preset forward torque value; in response to the measured forward torque value being less than or equal to the preset forward torque value, and the vehicle being in normal driving condition, counting the measured forward torque value to obtain the count; and in response to the count being greater than or equal to a preset counting threshold, outputting an alarm message to the vehicle.

[0008] Optionally, in response to the vehicle's acceleration state being a preset acceleration state, an alarm message is output to the vehicle based on the count of the measured forward torque value, including: in response to the vehicle's acceleration state being a preset acceleration state, comparing the measured forward torque value with a preset forward torque value; in response to the measured forward torque value being less than or equal to the preset forward torque value, and the vehicle being in a normal driving state, counting the measured forward torque value to obtain the count count; and in response to the count count being greater than or equal to a preset counting threshold, outputting an alarm message to the vehicle.

[0009] Optionally, obtaining a preset forward torque value includes: obtaining the theoretical forward torque value of the vehicle; and determining the preset forward torque value as the product of the theoretical forward torque value and the preset value.

[0010] Optionally, the method further includes: prohibiting the counting of the measured forward torque value in response to the measured forward torque value being greater than a preset forward torque value, or when the vehicle is in an abnormal driving state.

[0011] Optionally, the method further includes controlling the vehicle to output alarm information.

[0012] According to another aspect of the present invention, an alarm device for vehicle friction pads is also provided, comprising: an acquisition module for acquiring a measured forward torque value of a vehicle; and an output module for outputting alarm information to the vehicle based on a count of the measured forward torque value in response to a vehicle speed difference value being greater than a preset speed difference value, or the vehicle acceleration state being a preset acceleration state, wherein the speed difference value is the difference between the front wheel speed and the rear wheel speed of the vehicle, and the alarm information is used to indicate the degree of wear of the vehicle's friction pads.

[0013] According to another aspect of the present invention, a vehicle is also provided, comprising: a friction pad for changing the driving mode of the vehicle; and a front torque sensor connected to the friction pad for acquiring the measured forward torque value of the vehicle.

[0014] According to another aspect of the present invention, an electronic device is also provided, comprising: one or more processors; a storage device for storing one or more programs; and a method for alarming vehicle friction pads as described above, wherein the one or more programs are executed by the one or more processors, causing the one or more processors to execute the method described above.

[0015] According to another aspect of the present invention, a non-volatile storage medium is also provided, the non-volatile storage medium including a stored program, wherein, when the program is executed, it controls the processor of the device to execute the vehicle friction pad alarm method described above.

[0016] In this embodiment of the invention, the measured forward torque value of the vehicle is obtained. In response to the vehicle's speed difference being greater than a preset speed difference value, or the vehicle's acceleration state being a preset acceleration state, an alarm message is input to the vehicle based on the count of the measured forward torque value. Here, the speed difference is the difference between the front wheel speed and the rear wheel speed, and the alarm message indicates the degree of wear on the vehicle's friction pads. It is easy to note that by judging the vehicle's speed difference against the preset speed difference value, and by judging the vehicle's acceleration state against the preset acceleration state, the vehicle can activate a warning for the friction pads. Furthermore, by comparing the measured forward torque value with the preset forward torque value, the vehicle can issue a warning for the friction pads based on a preset counting threshold. This allows the user to receive the warning information simply and intuitively, achieving the goal of accurately warning for the vehicle's friction pads. This improves the accuracy of the warning for the vehicle's friction pads and solves the technical problem of low warning accuracy in vehicle friction pad warning systems. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a flowchart of an alarm method for vehicle friction pads according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of an optional real-time transfer case friction plate wear alarm system according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of an optional vehicle with a real-time transfer case friction plate wear alarm function according to an embodiment of the present invention;

[0021] Figure 4 This is a flowchart of an optional real-time transfer case friction plate wear alarm method according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of an alarm device for vehicle friction pads according to an embodiment of the present invention;

[0023] Figure 6 This is a structural schematic diagram of a vehicle according to an embodiment of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] Example 1

[0027] According to an embodiment of the present invention, an embodiment of an alarm method for vehicle friction pads is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0028] Figure 1 This is a flowchart of an alarm method for vehicle friction pads according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0029] Step S102: Obtain the measured forward torque value of the vehicle.

[0030] In the technical solution provided in step S102 of this application, the vehicle can be any type of vehicle with different driving modes, such as a fuel vehicle or a new energy vehicle, but not limited to these. The aforementioned measured forward torque value can be collected by the vehicle's data acquisition equipment. The real-time forward torque value of the vehicle in driving mode can be represented as T1, but is not limited to this.

[0031] In one optional embodiment, when the vehicle needs to change its drive mode, the friction plates of the transmission will engage and disengage, leading to wear on the friction plates. Therefore, a warning system for the friction plates is needed. To provide this warning, the vehicle's data acquisition device can be controlled to obtain the measured forward torque value of the vehicle. It should be noted that the vehicle's data acquisition device can be any one or more devices, apparatuses, processors, etc., capable of acquiring measured forward torque values, and is not specifically limited in this embodiment.

[0032] In another alternative embodiment, when the vehicle needs to switch from two-wheel drive mode to four-wheel drive mode, the friction plates of the transmission will engage and disengage, which will lead to wear of the friction plates. Therefore, it is necessary to provide a warning for the friction plates. In order to provide a warning for the friction plates, the measured forward torque value of the vehicle can be obtained first.

[0033] Step S104: In response to the vehicle's speed difference being greater than a preset speed difference or the vehicle's acceleration state being a preset acceleration state, an alarm message is input to the vehicle based on the number of counts of the measured forward torque value. The speed difference is the difference between the front wheel speed and the rear wheel speed of the vehicle, and the alarm message is used to indicate the degree of wear of the vehicle's friction pads.

[0034] The aforementioned speed difference can be the real-time speed difference between the front and rear wheels of the vehicle, collected by the vehicle's data acquisition equipment. The aforementioned preset speed difference can be set by the user in advance, and is a difference that determines whether a warning for the friction plates needs to be triggered. The specific preset speed difference can be set by the user according to actual conditions, and is not limited in this embodiment. The aforementioned acceleration state can be the real-time acceleration state of the vehicle, collected by the vehicle's data acquisition equipment. The aforementioned preset acceleration state can be set by the user in advance, and is an acceleration state that determines whether a warning for the friction plates needs to be triggered. The preset acceleration state is not specifically limited in this embodiment; in this embodiment, the first gear acceleration state of the vehicle is used as an example for explanation, but it is not limited to this. The aforementioned number of counts can be the number of times the measured forward torque value is counted.

[0035] The aforementioned alarm messages can be any one or more, indicating the degree of wear of the friction plates in the vehicle's transmission and providing information on replacing the friction plates. For example, it could be a voice prompt saying "The vehicle's friction plates are severely worn; please replace them promptly"; it could also be a text prompt on the vehicle's display screen saying "The vehicle's friction plates are severely worn; please replace them promptly"; it could also be a video prompt on the vehicle's display screen indicating that the vehicle's friction plates are worn and need to be replaced promptly; or it could be a simultaneous output of text and voice, or video and voice, to indicate that the vehicle's friction plates are severely worn and need to be replaced promptly.

[0036] In one optional embodiment, after obtaining the measured forward torque value of the vehicle, it can be determined whether the vehicle's speed difference is greater than a preset speed difference value, and whether the vehicle's acceleration state is a preset acceleration state. When it is determined that the vehicle's speed difference is greater than the preset speed difference value, or that the vehicle's acceleration state is a preset acceleration state, the measured forward torque value can be counted. When the count reaches a certain number, or the count exceeds a certain number, or the count meets a certain range, it indicates that the wear of the friction pad is severe. At this time, an alarm message needs to be output. Therefore, a text alarm message can be input to the vehicle based on the count of the measured forward torque value, a video alarm message can be input to the vehicle based on the count of the measured forward torque value, and a voice and text alarm message can be input to the vehicle based on the count of the measured forward torque value. The alarm message is used to provide an early warning of the wear degree of the friction pad.

[0037] In another optional embodiment, when it is determined that the vehicle's speed difference is greater than a preset speed difference, the measured forward torque value can be counted. When the count reaches a certain number, or the count exceeds a certain number, or the count meets a certain range, a text alarm message can be input to the vehicle based on the count of the measured forward torque value, a video alarm message can be input to the vehicle based on the count of the measured forward torque value, or a voice and text alarm message can be input to the vehicle based on the count of the measured forward torque value. The alarm message is used to provide early warning of the wear degree of the friction pads.

[0038] In another optional embodiment, when the vehicle's acceleration state is determined to be a preset acceleration state, the measured forward torque value can be counted. When the count reaches a certain number, or the count exceeds a certain number, or the count falls within a certain range, a text alarm message can be input to the vehicle based on the count of the measured forward torque value, a video alarm message can be input to the vehicle based on the count of the measured forward torque value, or a voice and text alarm message can be input to the vehicle based on the count of the measured forward torque value. The alarm message is used to provide early warning of the wear degree of the friction pads.

[0039] In this embodiment of the invention, the measured forward torque value of the vehicle is obtained. In response to the vehicle's speed difference being greater than a preset speed difference value, or the vehicle's acceleration state being a preset acceleration state, an alarm message is input to the vehicle based on the count of the measured forward torque value. Here, the speed difference is the difference between the front wheel speed and the rear wheel speed, and the alarm message indicates the degree of wear on the vehicle's friction pads. It is easy to note that by judging the vehicle's speed difference against the preset speed difference value, and by judging the vehicle's acceleration state against the preset acceleration state, the vehicle can activate a warning for the friction pads. Furthermore, by comparing the measured forward torque value with the preset forward torque value, the vehicle can issue a warning for the friction pads based on a preset counting threshold. This allows the user to receive the warning information simply and intuitively, achieving the goal of accurately warning for the friction pads. This improves the accuracy of the warning for vehicle friction pads and solves the technical problem of low warning accuracy in vehicle friction pad warnings.

[0040] The method described in this embodiment will be further described below.

[0041] Optionally, in response to the vehicle's speed difference being greater than a preset speed difference, an alarm message is output to the vehicle based on the count of the measured forward torque value, including: in response to the vehicle's speed difference being greater than the preset speed difference, comparing the measured forward torque value with the preset forward torque value; in response to the measured forward torque value being less than or equal to the preset forward torque value, and the vehicle being in normal driving condition, counting the measured forward torque value to obtain the count; and in response to the count being greater than or equal to a preset counting threshold, outputting an alarm message to the vehicle.

[0042] The aforementioned preset forward torque value can be set by the user in advance. It represents the torque value at which counting the measured forward torque value begins. When the measured forward torque value is less than or equal to the preset forward torque value, it indicates that the wear of the friction plates is severe, and counting the measured forward torque value can begin at this time. The aforementioned normal driving state can be a driving state in which the vehicle has no other abnormalities except for abnormal wear of the friction plates.

[0043] The aforementioned preset counting threshold can be a threshold set by the user for outputting alarm information to the vehicle. When the number of counts is greater than or equal to the preset counting threshold, it indicates that the wear of the vehicle's friction pads is severe, and an alarm message needs to be output as a warning. It should be noted that the user can set the value of the preset counting threshold according to actual needs. In this embodiment, 3 times is used as an example, but it is not limited to this and can also be 2 times, 4 times, etc.

[0044] In one optional embodiment, when the vehicle's speed difference is greater than a preset speed difference, it indicates that the vehicle is in a drive mode change state. At this time, the measured forward torque value needs to be compared with the preset forward torque value. When the comparison result is that the measured forward torque value is less than or equal to the preset forward torque value, and the vehicle is in a normal driving state, it indicates that the vehicle's friction pads may be severely damaged. At this time, the measured forward torque value can be counted to obtain the count count. In response to the count count being greater than or equal to 3, it indicates that the friction pads are severely damaged, and an alarm message needs to be output to the vehicle to warn that the vehicle's friction pads are severely worn and need to be replaced.

[0045] In another optional embodiment, when the vehicle's speed difference is greater than a preset speed difference, it indicates that the vehicle is in a drive mode change state. At this time, the measured forward torque value needs to be compared with the preset forward torque value. When the comparison result is that the measured forward torque value is less than or equal to the preset forward torque value, and the vehicle is in a normal driving state, it indicates that the vehicle's friction pads may be severely damaged. At this time, the measured forward torque value can be counted to obtain the count count. In response to the count count being greater than or equal to 4, it indicates that the friction pads are severely damaged, and an alarm message needs to be output to the vehicle to warn that the vehicle's friction pads are severely worn and need to be replaced.

[0046] Optionally, in response to the vehicle's acceleration state being a preset acceleration state, an alarm message is output to the vehicle based on the count of the measured forward torque value, including: in response to the vehicle's acceleration state being a preset acceleration state, comparing the measured forward torque value with a preset forward torque value; in response to the measured forward torque value being less than or equal to the preset forward torque value, and the vehicle being in a normal driving state, counting the measured forward torque value to obtain the count count; and in response to the count count being greater than or equal to a preset counting threshold, outputting an alarm message to the vehicle.

[0047] In one optional embodiment, when the vehicle's acceleration state is determined to be a preset acceleration state, it indicates that the vehicle is in a drive mode change state. At this time, it is necessary to compare the measured forward torque value with the preset forward torque value. When the comparison result is that the measured forward torque value is less than or equal to the preset forward torque value, and the vehicle is in a normal driving state, it indicates that the vehicle's friction pads may be severely damaged. At this time, the measured forward torque value can be counted to obtain the count count. In response to the count count being greater than or equal to 3, it indicates that the friction pads are severely damaged, and an alarm message needs to be output to the vehicle to warn that the vehicle's friction pads are severely worn and need to be replaced.

[0048] In one optional embodiment, when the vehicle's acceleration state is determined to be a preset acceleration state, it indicates that the vehicle is in a drive mode change state. At this time, it is necessary to compare the measured forward torque value with the preset forward torque value. When the comparison result is that the measured forward torque value is less than or equal to the preset forward torque value, and the vehicle is in a normal driving state, it indicates that the vehicle's friction pads may be severely damaged. At this time, the measured forward torque value can be counted to obtain the count count. In response to the count count being greater than or equal to 4, it indicates that the friction pads are severely damaged, and an alarm message needs to be output to the vehicle to warn that the vehicle's friction pads are severely worn and need to be replaced.

[0049] Optionally, obtaining a preset forward torque value includes: obtaining the theoretical forward torque value of the vehicle; and determining the preset forward torque value as the product of the theoretical forward torque value and the preset value.

[0050] The theoretical forward torque value mentioned above can be preset by the user and is used to determine whether the measured forward torque value needs to be counted. It can be represented as T0, but is not limited to this. The specific value of the theoretical forward torque value can be set by the user according to their needs, and is not specifically limited in this embodiment. The preset value mentioned above can be preset by the user to determine whether the measured forward torque value needs to be counted. The specific value can be set by the user according to their needs. In this embodiment, 0.3 is used as an example, but it is not limited to this; it can also be 0.2, 0.4, etc. The preset forward torque value mentioned above can be represented as T. s However, it is not limited to this.

[0051] In one optional embodiment, obtaining the preset forward torque value may include: obtaining the theoretical forward torque value of the vehicle, and using the product of the theoretical forward torque value and 0.3 as the preset forward torque value.

[0052] In another alternative embodiment, the preset forward torque value can be obtained by the following formula:

[0053] T s =0.3*T0;

[0054] Among them, T s Used to represent the preset forward torque value, where 0.3 is the preset value and T0 is the theoretical forward torque value.

[0055] In another alternative embodiment, obtaining the preset forward torque value may include: obtaining the theoretical forward torque value of the vehicle, and using the product of the theoretical forward torque value and 0.4 as the preset forward torque value.

[0056] In another alternative embodiment, the preset forward torque value can be obtained by the following formula:

[0057] Ts =0.4*T0;

[0058] Among them, T s The preset forward torque value is 0.4, where T0 is the theoretical forward torque value.

[0059] Optionally, the method further includes: in response to the measured forward torque value being greater than a preset forward torque value, or when the vehicle is in an abnormal driving state, not counting the measured forward torque value.

[0060] The aforementioned abnormal driving conditions may include other abnormal driving conditions besides abnormal friction pads, such as abnormal vehicle braking, but are not limited to these.

[0061] In one optional embodiment, when it is determined that the measured forward torque value is greater than the preset forward torque value, it indicates that the vehicle's friction pads will not rub, so there is no need to count the measured forward torque value.

[0062] In another alternative embodiment, when it is determined that the vehicle is in an abnormal driving state, for example, when it is determined that the vehicle is in an abnormal braking state, it indicates that the friction pads of the vehicle are not abnormal, so there is no need to count the measured forward torque value.

[0063] Optionally, the method further includes controlling the vehicle to output alarm information.

[0064] In one alternative embodiment, after alarm information is input to the vehicle, the vehicle can be controlled to output alarm information to the user.

[0065] In another optional embodiment, after an alarm message is output to the vehicle, the vehicle's microphone can be controlled to output a voice alarm message to the user stating "The vehicle's friction pads are severely worn; please replace the friction pads promptly." Alternatively, the vehicle's entertainment system display screen can be controlled to output a video alarm message to the user stating "The vehicle's friction pads are severely worn; please replace the friction pads promptly." Furthermore, the vehicle's instrument panel can be controlled to display an image alarm message to the user stating "The vehicle's friction pads are severely worn; please replace the friction pads promptly," allowing the user to replace the friction pads promptly based on the alarm message, thus ensuring the user's driving safety.

[0066] In another optional embodiment, after an alarm message is output to the vehicle, the vehicle's microphone and the display screen of the vehicle's entertainment system can be controlled to simultaneously output a voice alarm message and a video alarm message to the user stating "The friction pads of the vehicle are severely worn, please replace the friction pads in time." This allows the user to replace the friction pads in a timely manner based on the alarm message, ensuring the user's driving safety.

[0067] This invention provides a system and vehicle for alarming wear of friction plates in a real-time transfer case. When the friction plates in the real-time transfer case are worn to a certain extent, an early warning can be given to proactively remind the user to replace the transfer case. This avoids the passive monitoring that requires disassembling the transfer case to determine the wear of the friction plates, and prevents situations where the user is unaware that the vehicle has lost its four-wheel drive function. It can better solve the traditional passive user experience, ensure that the user can continue to enjoy the driving pleasure brought by four-wheel drive, and improve driving safety.

[0068] Optionally, the on-demand transfer case friction plate wear alarm method of this embodiment may include: when the front and rear wheel speed difference of the vehicle is greater than a preset value, triggering the transfer case friction plate wear alarm function. At this time, the actual front transmission torque value of the whole vehicle can be collected first, and then compared with the theoretical front transmission torque value issued by the four-wheel drive control unit. When the actual front transmission torque value is less than or equal to 0.3 times the theoretical front transmission torque value, and at the same time check whether the four-wheel drive system has issued other fault information, if there is no other four-wheel drive fault alarm, then the count is completed once. When the cumulative count is greater than or equal to three, the friction plate alarm function is activated, and the instrument synchronizes. An alarm prompt will be displayed, and the transfer case will be replaced. Alternatively, when the vehicle's transmission is in first gear and accelerating, the transfer case friction plate wear alarm function will also be triggered. In this case, the actual forward torque value of the entire vehicle is first collected, and then compared with the theoretical forward torque value issued by the four-wheel drive control unit. When the actual forward torque value is less than or equal to 0.3 times the theoretical forward torque value, and at the same time, it is checked whether the four-wheel drive system issues other fault information. If no other four-wheel drive fault alarm is detected, the count is completed. When the cumulative count is greater than or equal to three, the friction plate alarm function is activated, the instrument panel displays an alarm prompt, and the transfer case is replaced. It should be noted that in this embodiment, the multiplier is not limited to 0.3 times, and the cumulative count is not limited to three times.

[0069] Figure 2 This is a schematic diagram of an optional real-time transfer case friction plate wear alarm system according to an embodiment of the present invention, as shown below. Figure 2 As shown, the system includes: an information acquisition module 21, an information verification module 22, an information judgment module 23, and an information alarm module 24. The information acquisition module 21 is connected to the information verification module 22, the information verification module 22 is connected to the information acquisition module 21 and the information judgment module 23, the information judgment module 23 is connected to the information verification module 22 and the information alarm module 24, and the information alarm module 24 is connected to the information judgment module 23.

[0070] The information acquisition module is used to trigger the friction pad wear alarm function when the speed difference between the front and rear wheels is greater than a preset value, or when the vehicle is accelerating in first gear, and to collect the actual forward torque value of the whole vehicle and the theoretical forward torque value calculated by the four-wheel drive control unit.

[0071] The function of the information verification module is to compare the actual forward torque value with 0.3 times the theoretical forward torque value. When the actual forward torque value is less than or equal to 0.3 times the theoretical forward torque value, the system also checks for other four-wheel drive fault alarms. If no other four-wheel drive fault alarms are found, the system counts once. If the actual forward torque value is greater than 0.3 times the theoretical forward torque value, or if there are other four-wheel drive fault alarms, no count is performed.

[0072] The function of the information judgment module is to verify the number of successful counts. When the cumulative count is greater than or equal to three, the friction plate wear alarm function is executed.

[0073] The information alarm module is used to activate the friction pad wear alarm function and send alarm messages through the vehicle's microphone, entertainment system, or instrument panel to remind the user to replace the transfer case friction pads.

[0074] Figure 3 This is a schematic diagram of an optional vehicle with a real-time transfer case friction plate wear alarm function according to an embodiment of the present invention, as shown below. Figure 3 As shown, the vehicle includes: a front torque sensor, an accelerator pedal signal sensor, a transmission control unit (TCU), front and rear wheel speed sensors, a four-wheel drive control unit, and a vehicle instrument display. The sensors and controllers interact with each other via a vehicle serial bus (Controller Area Network, vehicle output CAN). The front torque sensor provides the actual torque, the accelerator pedal signal sensor provides the throttle opening signal, the transmission control unit (TCU) provides the gear signal, the front and rear wheel speed sensors provide the wheel speed, and the four-wheel drive control unit provides the theoretical front torque and the four-wheel drive warning signal.

[0075] Depend on Figure 3It is known that the front torque sensor can acquire the real-time measured front torque value of the vehicle; the accelerator pedal signal sensor can provide the throttle opening signal to determine the vehicle's acceleration status; the transmission control unit can provide the vehicle's gear signal to determine the vehicle's gear status; the front and rear wheel speed sensors can acquire the real-time wheel speeds of the front and rear wheels respectively, and further, the vehicle's speed difference can be obtained based on the front and rear wheel speeds; the four-wheel drive control unit is used to control the switching of the vehicle's drive mode. Through the four-wheel drive control unit, the vehicle's drive mode can be switched from two-wheel drive mode to four-wheel drive mode, and vice versa; the vehicle's instrument display can output alarm information to the user, which may include, but is not limited to, the vehicle's instrument panel and entertainment system; all the sensors, control units, and instrument displays in the vehicle interact through the vehicle's CAN bus. For example, the front torque sensor, front and rear wheel speed sensors, and accelerator pedal sensor can transmit signals to the four-wheel drive control unit via the CAN bus. The four-wheel drive control unit can change the vehicle's drive mode based on the received signals. At the same time, when the vehicle changes its drive mode, the transmission control unit can confirm the vehicle's gear information. When it is confirmed that the vehicle is in first gear acceleration, it can determine the actual front torque value of the vehicle. When it is determined that the actual front torque value is less than or equal to the preset front torque value, it counts the actual front torque value. When the count is greater than or equal to the preset count threshold, it outputs an alarm message to the vehicle.

[0076] Figure 4 This is a flowchart of an optional real-time transfer case friction plate wear alarm method according to an embodiment of the present invention, as follows: Figure 4 As shown, the method includes the following steps:

[0077] Step S401: Determine whether the difference in speed between the front and rear wheels of the vehicle is greater than a preset speed difference, or determine whether the vehicle is in first gear acceleration mode. If the difference in speed between the front and rear wheels is greater than the preset speed difference, or the vehicle is in first gear acceleration mode, proceed to step S402; otherwise, proceed to step S407.

[0078] Step S402: Collect the measured forward torque value of the vehicle and determine whether the measured forward torque value is less than or equal to 0.3 times the theoretical forward torque value. If the measured forward torque value is less than or equal to 0.3 times the theoretical forward torque value, proceed to step S403; otherwise, proceed to step S407.

[0079] Step S403: Check if there are any other faults in the vehicle system. If not, proceed to step S404; otherwise, return to step S401.

[0080] Step S404: Count the measured forward torque values;

[0081] Step S405: Determine whether the count is greater than or equal to 3 times. If yes, proceed to step S406; otherwise, return to step S401.

[0082] Step S406: Output alarm information and prompt for replacement of friction pads;

[0083] Step S407: End the process.

[0084] In this embodiment of the invention, the measured forward torque value of the vehicle is obtained. In response to the vehicle's speed difference being greater than a preset speed difference value, or the vehicle's acceleration state being a preset acceleration state, an alarm message is input to the vehicle based on the count of the measured forward torque value. Here, the speed difference is the difference between the front wheel speed and the rear wheel speed, and the alarm message indicates the degree of wear on the vehicle's friction pads. It is easy to note that by judging the vehicle's speed difference against the preset speed difference value, and by judging the vehicle's acceleration state against the preset acceleration state, the vehicle can activate a warning for the friction pads. Furthermore, by comparing the measured forward torque value with the preset forward torque value, the vehicle can issue a warning for the friction pads based on a preset counting threshold. This allows the user to receive the warning information simply and intuitively, achieving the goal of accurately warning for the vehicle's friction pads. This improves the accuracy of the warning for the vehicle's friction pads and solves the technical problem of low warning accuracy in vehicle friction pad warning systems.

[0085] This invention provides a system and vehicle for real-time transfer case friction plate wear alarm. When the friction plates inside the real-time transfer case wear to a certain extent, it can provide an early warning and proactively remind the user to replace the transfer case. This avoids the passive monitoring that requires disassembling the transfer case to determine the wear of the friction plates, and prevents situations where the user is unaware that the vehicle has lost its four-wheel drive function, thus avoiding a certain impact on the user's driving safety and experience. It can better solve the problem of traditional passive user experience by providing proactive alarms, ensuring that users can continue to enjoy the driving pleasure brought by four-wheel drive, and improving driving safety.

[0086] Example 2

[0087] According to an embodiment of the present invention, an alarm device for vehicle friction pads is provided. This device can execute the alarm method for vehicle friction pads provided in Embodiment 1 above. The specific implementation method and preferred application scenario are the same as those in Embodiment 1 above, and will not be repeated here.

[0088] Figure 5 This is a schematic diagram of the structure of an alarm device for vehicle friction pads according to an embodiment of the present invention, as shown below. Figure 5 As shown, the device includes an acquisition module 52 and an output module 54.

[0089] The acquisition module 52 is used to acquire the measured forward torque value of the vehicle;

[0090] The output module 54 is used to output alarm information to the vehicle based on the number of counts of the measured front torque value in response to the vehicle's speed difference being greater than a preset speed difference or the vehicle's acceleration state being a preset acceleration state. The speed difference is the difference between the front wheel speed and the rear wheel speed of the vehicle, and the alarm information is used to indicate the degree of wear of the vehicle's friction pads.

[0091] Optionally, the output module includes: a first comparison unit, a first counting module, and a first output unit.

[0092] The first comparison unit is used to compare the measured forward torque value with the preset forward torque value in response to the vehicle's speed difference being greater than the preset speed difference value; the first counting module is used to count the measured forward torque value in response to the measured forward torque value being less than or equal to the preset forward torque value and the vehicle being in normal driving condition, and obtain the count count; the first output unit is used to output alarm information to the vehicle in response to the count count being greater than or equal to the preset count threshold.

[0093] Optionally, the output module further includes: a second comparison unit, a second counting module, and a second output unit.

[0094] The second comparison unit is used to compare the measured forward torque value with the preset forward torque value in response to the vehicle's acceleration state being a preset acceleration state; the second counting unit is used to count the measured forward torque value in response to the measured forward torque value being less than or equal to the preset forward torque value and the vehicle being in a normal driving state, thereby obtaining the number of counts; the second output unit is used to output alarm information to the vehicle in response to the number of counts being greater than or equal to a preset counting threshold.

[0095] Optionally, the output module may further include: an acquisition unit and a determination unit.

[0096] The acquisition unit is used to acquire the theoretical forward torque value of the vehicle; the determination unit is used to determine the preset forward torque value by multiplying the theoretical forward torque value and the preset value.

[0097] Optionally, the device may also include a control module.

[0098] The control module is used to control the vehicle to output alarm information.

[0099] Example 3

[0100] According to an embodiment of the present invention, a vehicle is provided that can operate the alarm device for the vehicle friction pads provided in Embodiment 2 above. Figure 6 This is a schematic diagram of the structure of a vehicle according to an embodiment of the present invention, such as... Figure 6As shown, the vehicle includes: a friction plate 62 for changing the vehicle's driving mode; and a front torque sensor 64 connected to the friction plate for acquiring the measured forward torque value of the vehicle.

[0101] Example 4

[0102] According to an embodiment of the present invention, an electronic device is provided, comprising: one or more processors; a storage device for storing one or more programs; and a method for alarming vehicle friction pads, wherein the one or more programs are executed by the one or more processors, causing the one or more processors to perform any of the above-described methods.

[0103] Example 5

[0104] According to an embodiment of the present invention, a non-volatile storage medium is provided, the non-volatile storage medium including a stored program, wherein, when the program is running, it controls the processor of the device to execute the alarm method for vehicle friction pads described above.

[0105] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0106] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0107] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0108] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0109] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0110] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0111] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for alarming vehicle friction pads, characterized in that, include: Obtain the measured forward torque value of the vehicle; In response to the vehicle's speed difference being greater than a preset speed difference, or the vehicle's acceleration state being a preset acceleration state, an alarm message is input to the vehicle based on the count of the measured forward torque value, wherein the speed difference is the difference between the front wheel speed and the rear wheel speed of the vehicle, and the alarm message is used to indicate the degree of wear of the vehicle's friction pads. The method of outputting an alarm message to the vehicle based on the count of the measured forward torque value in response to the vehicle's speed difference being greater than a preset speed difference value includes: comparing the measured forward torque value with the preset forward torque value in response to the vehicle's speed difference being greater than the preset speed difference value; counting the measured forward torque value to obtain the count count in response to the measured forward torque value being less than or equal to the preset forward torque value and the vehicle being in a normal driving state; and outputting the alarm message to the vehicle in response to the count count being greater than or equal to a preset count threshold. The method of outputting an alarm message to the vehicle based on the count of the measured forward torque value in response to the vehicle's acceleration state being a preset acceleration state includes: comparing the measured forward torque value with a preset forward torque value in response to the vehicle's acceleration state being a preset acceleration state; counting the measured forward torque value to obtain the count count in response to the measured forward torque value being less than or equal to the preset forward torque value and the vehicle being in a normal driving state; and outputting the alarm message to the vehicle in response to the count count being greater than or equal to a preset count threshold. The method further includes: prohibiting the counting of the measured forward torque value in response to the measured forward torque value being greater than the preset forward torque value, or when the vehicle is in an abnormal driving state.

2. The method according to claim 1, characterized in that, Obtaining the preset forward torque value includes: Obtain the theoretical forward torque value of the vehicle; The product of the theoretical forward torque value and the preset value is determined as the preset forward torque value.

3. The method according to claim 1, characterized in that, The method further includes: Control the vehicle to output the alarm information.

4. An alarm device for vehicle friction pads, characterized in that, include: The acquisition module is used to acquire the measured forward torque value of the vehicle. The output module is used to respond to the vehicle's speed difference being greater than a preset speed difference or the vehicle's acceleration state being a preset acceleration state, and to output alarm information to the vehicle based on the count of the measured forward torque value, wherein the speed difference is the difference between the front wheel speed and the rear wheel speed of the vehicle, and the alarm information is used to indicate the wear degree of the vehicle's friction pads. The output module is further configured to, in response to the vehicle's speed difference being greater than a preset speed difference, compare the measured forward torque value with the preset forward torque value; in response to the measured forward torque value being less than or equal to the preset forward torque value and the vehicle being in normal driving condition, count the measured forward torque value to obtain the count count; and in response to the count count being greater than or equal to a preset count threshold, output the alarm information to the vehicle. The output module is further configured to: when the vehicle's acceleration state is a preset acceleration state, compare the measured forward torque value with a preset forward torque value; when the measured forward torque value is less than or equal to the preset forward torque value and the vehicle is in a normal driving state, count the measured forward torque value to obtain the count count; and when the count count is greater than or equal to a preset count threshold, output the alarm information to the vehicle. The output module is further configured to prohibit counting the measured forward torque value in response to the measured forward torque value being greater than the preset forward torque value, or when the vehicle is in an abnormal driving state.

5. A vehicle, characterized in that, include: Friction pads are used to change the driving mode of a vehicle; A front torque sensor, connected to the friction plate, is used to obtain the measured forward torque value of the vehicle. An alarm device, wherein the alarm device is the vehicle friction pad alarm device as described in claim 4.

6. An electronic device, characterized in that, include: One or more processors; Storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors perform the alarm method for vehicle friction pads as described in any one of claims 1-3.

7. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein, when the program is executed, it controls the processor of the device to execute the alarm method for vehicle friction pads as described in any one of claims 1-3.

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