Tire pressure control method, vehicle controller, vehicle and storage medium

Abstract

The present application discloses a tire pressure control method, a vehicle controller, a vehicle and a storage medium. The present application controls the tire pressure of the vehicle based on the road surface condition where the vehicle is currently located. In this way, by adjusting the tire pressure of the vehicle to a range matching the current road surface condition, the frictional noise and wear of the vehicle tires can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle control, and particularly to a tire pressure control method, a vehicle controller, a vehicle and a storage medium. Background Art

[0002] During the driving process of a vehicle, the contact area, friction and grip of the vehicle tires with the ground will change under different road conditions. Therefore, different road conditions may also have different requirements for tire pressure. At present, the control of tire pressure is usually based on the selected driving mode under the condition of the vehicle moving forward, for example, the tire pressure control in the economy mode and the sports mode. For other special conditions except for the forward driving condition, such as the condition of making a U-turn in place or making a large-angle turn, if the vehicle executes the functions of these conditions according to the set tire pressure, it is easy to cause the vehicle to generate relatively large frictional noise and wear the vehicle tires. Summary of the Invention

[0003] Embodiments of the present application provide a tire pressure control method, a vehicle controller, a vehicle and a storage medium, which reduce the frictional noise generated by the vehicle during the execution of conditions and the wear of the tires, so as to at least partially solve the above technical problems.

[0004] To achieve the above object, according to the first aspect of the present application, a tire pressure control method is provided, including:

[0005] Detect the road condition of the road where the vehicle is currently located;

[0006] Control the tire pressure of the vehicle according to the road condition.

[0007] In an embodiment of the present application, detecting the road condition of the road where the vehicle is currently located includes:

[0008] Transmit a driving torque signal to the motor of the vehicle and obtain the feedback torque signal corresponding to the driving torque signal;

[0009] Determine the road condition of the road where the vehicle is currently located according to the feedback torque signal.

[0010] In an embodiment of the present application, the road condition includes the road type. Determining the road type of the road where the vehicle is currently located according to the feedback torque signal includes:

[0011] Query the pre-established mapping table of the feedback torque signal and the road type according to the feedback torque signal to obtain the road type of the road where the vehicle is currently located.

[0012] In an embodiment of the present application, transmitting a driving torque signal to the motor of the vehicle and obtaining the feedback torque signal corresponding to the driving torque signal includes:

[0013] Transmit a driving torque signal from the vehicle's motor controller to the vehicle's motor, and obtain a feedback torque signal corresponding to the driving torque signal.

[0014] In an embodiment of the present application, detecting the road surface condition of the road where the vehicle is currently located includes:

[0015] Perform image recognition on the road surface image of the road where the vehicle is currently located to obtain the road surface condition of the road where the vehicle is currently located.

[0016] In an embodiment of the present application, the road surface condition includes the road surface type. Performing image recognition on the road surface image of the road where the vehicle is currently located to obtain the road surface condition of the road where the vehicle is currently located includes:

[0017] Input the road surface image into a pre-trained road surface type classification model to obtain the road surface type of the road where the vehicle is currently located.

[0018] In an embodiment of the present application, detecting the road surface condition of the road where the vehicle is currently located includes:

[0019] When receiving a target operating condition switching instruction, detect the road surface condition of the road where the vehicle is currently located.

[0020] In an embodiment of the present application, the road surface condition includes an epoxy floor road surface, a cement road surface, or an asphalt road surface.

[0021] In an embodiment of the present application, controlling the tire pressure of the vehicle according to the road surface condition includes:

[0022] Compare the current tire pressure of the vehicle with the target tire pressure under the target operating condition;

[0023] When the current tire pressure does not match the target tire pressure, adjust the tire pressure of the vehicle to the target tire pressure.

[0024] In an embodiment of the present application, controlling the tire pressure of the vehicle according to the road surface condition further includes:

[0025] Query a pre-established mapping table of road surface condition and tire pressure according to the road surface condition to obtain the target tire pressure corresponding to the road surface condition under the target operating condition.

[0026] In an embodiment of the present application, the tires of the vehicle are connected to the tire pressure control component through an air pipe;

[0027] Adjusting the tire pressure of the vehicle to the target tire pressure includes:

[0028] Send a tire pressure adjustment signal to the tire pressure control component according to the target tire pressure and the current tire pressure of the vehicle, so as to adjust the tire pressure of the tire to the target tire pressure through the tire pressure control component.

[0029] In the embodiments of the present application, the target operating conditions include at least one of the in-place turning condition and the large-angle turning condition.

[0030] In the embodiments of the present application, the tire pressure control method further includes:

[0031] Determine whether the vehicle can operate in the target operating condition according to the environmental information where the vehicle is currently located;

[0032] When it is determined that the vehicle can operate in the target operating condition, send a prompt message to remind the user;

[0033] Determine whether to issue a target condition switching instruction according to the user's response operation to the prompt message.

[0034] According to a second aspect of the present application, there is provided a vehicle controller, including:

[0035] A memory configured to store instructions; and

[0036] A processor configured to call instructions from the memory and capable of implementing the above-mentioned tire pressure control method when executing the instructions.

[0037] According to a third aspect of the present application, there is provided a vehicle including the above-mentioned vehicle controller.

[0038] In the embodiments of the present application, the vehicle further includes a tire pressure control component connected to the vehicle controller and the vehicle's tires, for adjusting the tire pressure of the tires to the target tire pressure according to the tire pressure adjustment signal sent by the vehicle controller.

[0039] In the embodiments of the present application, the tire pressure control component includes a compressor, an air storage tank, and an opening and closing valve. The tire is connected to the opening and closing valve through an air pipe, the air storage tank is connected to the opening and closing valve and the compressor respectively through an air pipe, and the opening and closing valve and the compressor are respectively connected to the vehicle controller.

[0040] According to a fourth aspect of the present application, there is provided a computer-readable storage medium, on which instructions are stored, and when the instructions are executed by a processor, the processor is caused to execute the above-mentioned tire pressure control method.

[0041] In summary, the present application controls the tire pressure of the vehicle based on the road surface condition where the vehicle is currently located. In this way, by adjusting the tire pressure of the vehicle to a range matching the current road surface condition, the frictional noise and wear of the vehicle tires can be reduced.

[0042] Other features and advantages of the present application will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0043] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0044] To more fully understand the present application and its beneficial effects, the following description will be made in conjunction with the accompanying drawings, where the same reference numerals in the following description represent the same parts.

[0045] Figure 1 It is a schematic diagram of the application scenario of a tire pressure control method provided in the embodiments of the present application;

[0046] Figure 2 It is a schematic flowchart of a tire pressure control method provided in the embodiments of the present application;

[0047] Figure 3 It is a schematic flowchart of a tire pressure control method provided in a specific embodiment of the present application;

[0048] Figure 4 It is a schematic structural diagram of a tire pressure control device provided in the embodiments of the present application;

[0049] Figure 5 It is a structural block diagram of a vehicle controller provided in the embodiments of the present application;

[0050] Figure 6 It is a structural block diagram of a vehicle provided in the embodiments of the present application. Detailed implementation manners

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0052] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined. In the present application, the term "exemplary" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "exemplary" in the present application is not necessarily to be construed as more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the present application. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present application can be implemented without the use of these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in the present application.

[0053] Figure 1 It is a schematic diagram of an application scenario of a tire pressure control method provided in an embodiment of the present application. As Figure 1 shown, this application scenario provides a vehicle, which may include a vehicle controller 1, a motor assembly 2, a tire pressure sensor 3, a tire pressure control assembly 4, a display device 5, a tire 6, a radar 7, and an image acquisition device 8. The vehicle controller 1 is respectively connected to the motor assembly 2, the tire pressure sensor 3, the tire pressure control assembly 4, the display device 5, the in-vehicle radar 7, and the image acquisition device 8, and the motor assembly 2, the tire pressure sensor 3, and the tire pressure control assembly 4 are also respectively connected to the tire 6. As an example, the vehicle controller 1 may be a vehicle control unit (VCU), also known as an electronic control unit.

[0054] The vehicle controller 1 may send a control instruction to the motor assembly 2 and obtain a feedback signal of the tire 6 based on the control instruction fed back by the motor assembly 2. Among them, the motor assembly 2 may include a drive motor 21 and a motor controller 22. The drive motor 21 is connected to the tire and is used to transmit a drive torque signal to the tire 6 to make the tire 6 rotate, thereby controlling the driving direction of the vehicle. The motor controller 22 is connected between the drive motor 21 and the vehicle controller 1 and is used to receive the control signal sent by the vehicle controller 1 and control the drive motor 21 based on the control signal.

[0055] For example, the motor assembly 2 can generate a feedback torque signal based on the driving torque signal and feedback the feedback torque signal to the vehicle controller 1. Then, the vehicle controller 1 determines the road surface condition of the road where the vehicle is currently located based on the feedback torque signal. As an example, the road surface condition may include the road surface type.

[0056] The tire pressure sensor 3 is connected between the tire 6 and the vehicle controller 1 and is used to collect the tire pressure signal of the tire 6.

[0057] The tire pressure control assembly 4 is connected to the vehicle controller 1 and the tire 6 and is used to adjust the tire pressure of the tire to the target tire pressure according to the tire pressure adjustment signal sent by the vehicle controller 1. Wherein, the target tire pressure is the tire pressure of the vehicle determined based on the road surface condition of the road where the vehicle is currently located.

[0058] The tire pressure control assembly 4 may include a compressor 41, an air storage tank 42 and an on-off valve 43. The tire 6 can be connected to the on-off valve 43 through an air pipe, and the air storage tank 42 is connected to the compressor 41 and the on-off valve 43 respectively through an air pipe. The compressor 41 and the on-off valve 43 are also connected to the vehicle controller 1. The on-off valve 43 is connected to the inflation and deflation hub bearing 61 of the tire 6 through an air pipe to perform inflation and deflation operations on the tire 6. The compressor 41 can control the air storage tank 42 and the on-off valve 43 to adjust the tire pressure of the tire to the target tire pressure according to the tire pressure adjustment signal.

[0059] Specifically, when the compressor 41 receives the tire pressure adjustment signal sent by the vehicle controller 1, it can compress air into high-pressure gas and store it in the air storage tank 42. At the same time, when the on-off valve 43 receives the tire pressure adjustment signal, it can be opened or closed according to the tire pressure adjustment signal, thereby controlling the flow of the high-pressure gas in the air storage tank 42. For example, if it is necessary to increase the tire pressure of the tire 6 and the tire pressure adjustment signal is to open the on-off valve 43, the on-off valve 43 will open, and the high-pressure gas will flow from the air storage tank 42 into the tire 6. On the contrary, if it is necessary to reduce the tire pressure of the tire 6 and the tire pressure adjustment signal is to close the on-off valve 43, the on-off valve 43 will close, and the high-pressure gas cannot flow from the air storage tank 42 into the tire 6. In this way, the tire pressure of the tire 6 can be adjusted based on the control signal of the vehicle controller 1 through the tire pressure control assembly 4.

[0060] The display device 5 is a device for human-computer interaction. The user can operate on the display device 5 and can also obtain the information displayed on the display device 5. As an example, the display device 5 may be a central control display screen. After receiving the user's operation instruction, the display device 5 sends the operation instruction to the vehicle controller 1, and the vehicle controller 1 then performs subsequent data processing based on the operation instruction.

[0061] The vehicle-mounted radar 7 and the image acquisition device 8 are respectively connected to the vehicle controller 1 and can be arranged on the outer surface of the vehicle. The vehicle-mounted radar 7 can be used to collect the environmental information where the vehicle is currently located. After receiving the environmental information, the vehicle controller 1 can determine whether to operate based on the environmental information. The image acquisition device 8 can be used to obtain the road surface image of the road where the vehicle is currently located. After receiving the road surface image, the vehicle controller 1 can perform image recognition on the road surface image to obtain the road surface condition of the road where the vehicle is currently located.

[0062] It should be understood that Figure 1 the application scenarios shown are only adaptable. According to the implementation requirements, other application scenarios can also be configured. The tire pressure control method of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. Although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from that shown in the drawings.

[0063] Figure 2 This is a schematic flowchart of a tire pressure control method provided in the embodiments of the present application. As Figure 2 shown, the tire pressure control method can include steps 201-202, etc., which will be introduced in detail below.

[0064] Step 201, detect the road surface condition of the road where the vehicle is currently located.

[0065] As an example, when receiving a target working condition switching instruction, the road surface condition of the road where the vehicle is currently located can be detected. The target working condition switching instruction refers to an instruction used to control the vehicle to switch from the current operating condition to a pre-set target operating condition. Among them, the pre-set target operating conditions can include various types of operating conditions of the vehicle. As an example of the embodiments of the present application, the target operating conditions can include, but are not limited to, the in-place turning condition or the large-angle turning condition. Among them, the in-place turning condition refers to the operating scenario where the driving direction of the vehicle is to be changed to the direction opposite to the current driving direction and the vehicle makes a U-turn in place. The large-angle turning condition refers to the condition where the angle between the driving direction to be changed by the vehicle and the current driving direction exceeds a certain value. For example, the turning condition where the steering wheel of the vehicle is turned to the full lock can be used as the large-angle turning condition.

[0066] In the embodiments of the present application, the road surface condition refers to the characteristics and performance of the road where the vehicle is located, etc. For example, the road surface condition can include the road surface type, and the road surface type refers to the category to which the road surface belongs after being classified based on a certain classification method. In one example, the classification of the road surface type can be distinguished according to actual needs. For example, it can be distinguished according to the materials used for the road, the structure of the road, etc. As an example of the embodiments of the present application, according to the materials used for the road, the road surface type can be divided into types such as epoxy floor pavement, cement pavement, and asphalt pavement.

[0067] Step 202: Control the tire pressure of the vehicle according to the road surface condition.

[0068] Since the frictional force and adhesion coefficient that the tire needs to overcome with the ground are different under different target operating conditions and road surface conditions. Therefore, in the embodiment of the present application, based on various road surface conditions under different target operating conditions, a target tire pressure is set. That is to say, under the target operating condition corresponding to the target operating condition switching instruction, each road surface condition corresponds to a target tire pressure. This target tire pressure can enable the vehicle to travel under this target operating condition and this road surface condition, with less noise generated between the tire and the ground, less tire wear, and higher vehicle stability. Therefore, in the embodiment of the present application, only based on the road surface condition under the target operating condition, the target tire pressure corresponding to the road surface condition can be obtained. Adjust the tire pressure of the tire based on this target tire pressure, so as to improve the stability and safety of the vehicle under the target operating condition.

[0069] The embodiment of the present application controls the tire pressure of the vehicle based on the road surface condition of the road where the vehicle is currently located in response to the target operating condition switching instruction. In this way, when the vehicle is in a target operating condition such as a U-turn or a large-angle turn, by adjusting the tire pressure of the vehicle to a range matching the current condition, the frictional noise and wear of the vehicle tires can be reduced, and at the same time, the unstable situations such as the vehicle tilting or even rolling over can be reduced, thereby improving the stability and safety of the vehicle driving.

[0070] In the embodiment of the present application, the environmental information of the road where the vehicle is currently located can also be obtained through an in-vehicle radar. Then, determine whether the vehicle can operate in the target operating condition according to the environmental information. For example, for the vehicle U-turn condition, it can be detected by the in-vehicle radar whether there are obstacles around the vehicle. If there are obstacles within the U-turn range of the vehicle, it is determined that the vehicle cannot operate in the target operating condition. If there are no obstacles within the U-turn range of the vehicle and there is no risk of rubbing against other objects when the current environment executes the target operating condition, it is determined that the vehicle can operate in the target operating condition.

[0071] When it is determined that the vehicle can operate in the target operating condition, the vehicle controller can send a prompt message to remind the user. For example, a prompt message can be sent to the display device. The user can perform a response operation on the prompt message on this display device. Then, according to the response operation of the user to the prompt message, determine whether to issue a target operating condition switching instruction. For example, if it is determined that the vehicle can execute the U-turn condition, the vehicle controller sends a prompt message to the display device. The display screen of the display device shows: Allowing the vehicle to make a U-turn, please click "Yes" or "No". If the user selects the response operation of "Yes", the vehicle controller will perform the process of making a U-turn based on this response operation. If the user selects the response operation of "No", the vehicle controller will turn off the U-turn function based on this response operation.

[0072] In the embodiments of the present application, it is determined whether the vehicle can operate in a target operating condition based on environmental information, reducing the risk of dangerous situations such as the presence of obstacles and improving the safety of vehicle driving.

[0073] In the embodiments of the present application, the road surface condition of the road where the vehicle is currently located can be determined in various ways. For example, the road surface condition can be determined by means of the feedback torque signal of the motor or the road surface image feedback by the image acquisition device. The following will expand and explain using the above two methods as examples respectively.

[0074] As an example, in step 201, a drive torque signal can be transmitted to the motor of the vehicle, and the feedback torque signal corresponding to the drive torque signal can be obtained. As an example, the drive torque signal can be transmitted to the motor of the vehicle through the motor controller of the vehicle, and the feedback torque signal corresponding to the drive torque signal can be obtained.

[0075] Among them, the drive torque signal is the torque transmitted to the drive motor of the vehicle through the motor controller of the vehicle based on the drive signal of the vehicle controller. When the tire moves, a feedback signal based on this drive torque signal, that is, the feedback torque signal, will be generated. This feedback torque signal can represent the current movement condition of the tire. Then, the vehicle controller can determine the road surface condition of the road where the vehicle is currently located according to the feedback torque signal.

[0076] Taking the classification of road surface conditions by road surface type as an example, in the embodiments of the present application, a mapping table of feedback torque signal and road surface type can be established in advance. This mapping table includes the mapping relationship between the feedback torque signal and the road surface type. The establishment of this mapping table can be achieved by pre-testing the vehicle on different types of roads to obtain the corresponding relationship between the road surface type and the feedback torque signal, and then establishing a mapping table of torque and road surface type according to this corresponding relationship. When the vehicle controller receives the feedback torque signal returned by the motor controller, it can query the mapping table of feedback torque signal and road surface type according to the feedback torque signal to obtain the road surface type of the road where the vehicle is currently located.

[0077] It should be noted that in the embodiments of the present application, in addition to establishing a mapping table of feedback torque signal and road surface type to determine the road surface type. Other methods based on the feedback torque signal can also be included to determine the road surface type. For example, in the way of a neural network model, a trained neural network model can be provided, the feedback torque signal is input into this neural network model, and then the predicted road surface type can be obtained.

[0078] As another example, in step 201, the road surface image of the road where the vehicle is currently located can also be obtained first through the on-vehicle image acquisition device. Then, image recognition is performed on the road surface image to obtain the road surface condition of the road where the vehicle is currently located.

[0079] In the embodiments of the present application, the image acquisition device may include, but is not limited to, cameras, monitoring devices, etc. After receiving the road surface image sent by the image acquisition device, the vehicle controller identifies the road surface image. Specifically, preprocessing operations such as denoising and brightness adjustment can be performed on the image first to improve the image quality. Then, features are extracted from the preprocessed road surface image for distinguishing different road surface conditions. Next, the extracted features are input into a pre-trained road surface condition classification model to obtain the road surface condition of the road where the vehicle is currently located.

[0080] Still taking the classification of road surface conditions by road surface type as an example, in the embodiments of the present application, a road surface type classification model can be pre-trained to classify the road surface type based on the road surface image collected by the image acquisition device. Specifically, a sample training data set of different road surface types can be collected first. These sample training data sets can include sample images and calibration parameters of the corresponding road surface types. Then, the collected sample image data is input into the model to be trained to obtain prediction parameters. Next, iterative operations are performed based on the calibration parameters and the prediction parameters until the model converges to obtain a trained road surface type classification model. When the vehicle controller receives the road surface image feedback by the image acquisition device, the road surface image can be input into the trained road surface type classification model to obtain the road surface type of the road where the vehicle is currently located. By classifying the road surface type through a machine learning model, the accuracy of determining the road surface type can be improved.

[0081] In step 202 of the embodiments of the present application, the current tire pressure of the vehicle can be obtained first. For example, the current tire pressure of the vehicle can be obtained through a tire pressure sensor. Then, the target tire pressure corresponding to the road surface condition under the target operating condition is obtained. Next, it is determined whether the current tire pressure matches the target tire pressure. For example, when the absolute difference between the current tire pressure and the target tire pressure is greater than or equal to a preset value, it means they do not match. If the current tire pressure does not match the target tire pressure, it indicates that the current tire pressure needs to be adjusted, and the vehicle controller will adjust the tire pressure of the vehicle to the target tire pressure. In one example, a tire pressure adjustment signal can be sent to the tire pressure control component according to the target tire pressure and the current tire pressure of the vehicle, so as to adjust the tire pressure of the tire to the target tire pressure through the tire pressure control component.

[0082] In the embodiments of the present application, the target tire pressure corresponding to the road surface condition under the target operating condition can be determined based on a pre-established mapping table of road surface condition and tire pressure. The mapping table of road surface condition and tire pressure includes the mapping relationship between the road surface condition and the tire pressure of the vehicle. Among them, the mapping table can be established by making the vehicle operate under different tire pressure conditions in different road surface conditions under the target operating condition, and then detecting the noise, loss parameters, etc. generated by the vehicle under different tire pressure conditions, and then obtaining the real-time tire pressure corresponding to the case of less noise and lower loss parameters as the target tire pressure corresponding to the road surface condition. The vehicle controller can query the mapping table of road surface condition and tire pressure according to the road surface condition to obtain the target tire pressure corresponding to the road surface condition.

[0083] Figure 3 It is a schematic flow chart of a tire pressure control method provided in a specific embodiment of the present application. As Figure 3 shown, in a specific embodiment, taking the target operating condition as the in-situ turning condition and determining the road surface type based on the feedback torque signal as an example, the tire pressure control method may include steps 301-307 and so on.

[0084] Step 301, obtain the environmental information where the vehicle is currently located;

[0085] Step 302, determine whether the vehicle meets the condition of in-situ turning. If so, enter step 303; otherwise, return to step 301.

[0086] Step 303, pre-start the in-situ turning and obtain the feedback torque signal of the motor assembly.

[0087] Step 304, determine the road surface type. Among them, the road surface type can include road surface 1, road surface 2, and road surface 3, which respectively represent different road surface types.

[0088] Step 305, determine whether the current tire pressure matches the target tire pressure. If not, enter step 306; if so, enter step 307.

[0089] Step 306, adjust the tire pressure to the target tire pressure.

[0090] Step 307, start the in-situ turning.

[0091] In the embodiments of the present application, the road surface type is identified and determined through the feedback torque signal, the current vehicle load and road surface state are defined, which ensures that the tire pressure is in the optimal state, reduces the occurrence of serious tire friction noise and wear, and unstable states such as in-situ turning of the vehicle. Moreover, the active control of tire pressure combined with the identification of the vehicle controller expands the application range of controlling tire pressure. For subsequent new functions, the tire pressure can be adjusted based on this control method, and only the preset tire pressure control logic needs to be updated during the test process.

[0092] Taking the scenario where a vehicle needs to turn around in place in an underground parking lot as an example, the vehicle is parked in the underground parking lot and is about to leave the warehouse. When the vehicle is restricted by the space of the parking lot and needs to turn around in place to change its direction, the in-vehicle radar monitors the surrounding environment of the vehicle to determine that the requirements are met and prompts through the display device that it is possible to turn around in place. The vehicle controller determines the road surface condition of the road where the vehicle is located by transmitting drive torque signals and feedback torque signals through the motor controller. At the same time, the tire pressure sensor feeds back the tire pressure signal of the current tire. The vehicle controller performs the matching of the current tire pressure and the road surface condition. If the current tire pressure matches the road surface condition, the vehicle starts to turn around in place. If the current tire pressure does not match the road surface condition, the vehicle controller gives a tire pressure signal command including the target tire pressure, and controls the compressor, the air storage tank, and the on-off valve to connect the tire inflation and deflation hub bearings through the air pipe to adjust the tire pressure. When the tire pressure is adjusted to the target tire pressure, the vehicle starts to execute a U-turn. In this embodiment, the vehicle controller can select various modes to match and adjust the road surface condition and the tire pressure, and can also perform fine-tuning according to the tire pressure sensor by real-time monitoring of the current tire pressure state, etc., to ensure that the tires and the ground always maintain an optimal state during a U-turn. In addition, for non-U-turn working conditions, such as driving conditions, the tire pressure can also be adjusted by matching the suspension state, such as the comfort mode or the sports mode, to match the stiffness and damping of the suspension in different modes.

[0093] Figure 4 The following is a schematic structural diagram of a tire pressure control device 400 provided in an embodiment of the present application. Please refer to Figure 4 This tire pressure control device 400 may include a detection module 401 and a control module 402. Among them, the detection module 401 is used to detect the road surface condition of the road where the vehicle is currently located. The control module 402 is used to control the tire pressure of the vehicle according to the road surface condition.

[0094] Among them, the detection module 401 and the control module 402 can be respectively used to execute the steps 201-202 in the corresponding embodiments of the above tire pressure control method. For the specific implementation manners of these modules and more detailed content, reference can be made to the corresponding method part, and details will not be elaborated here one by one.

[0095] Figure 5 The following is a structural block diagram of a vehicle controller 1 provided in an embodiment of the present application. The vehicle controller 1 includes a memory 501 and a processor 502. The memory 501 is configured to store instructions. The processor 502 is configured to call instructions from the memory and be able to implement the above tire pressure control method when executing the instructions.

[0096] Figure 6 The following is a structural block diagram of a vehicle 600 provided in an embodiment of the present application. The vehicle 600 includes the above vehicle controller 1.

[0097] The vehicle 600 in the embodiments of the present application can be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and the present application does not make specific limitations thereon.

[0098] The embodiments of the present application further provide a computer-readable storage medium, on which instructions are stored, and when the instructions are executed by a processor, the processor is configured to execute the above-mentioned tire pressure control method.

[0099] Since the instructions stored in the vehicle controller, the vehicle, and the computer-readable storage medium can execute the steps in any of the tire pressure control methods provided by the embodiments of the present application, the beneficial effects that can be achieved by any of the tire pressure control methods provided by the embodiments of the present application can be realized. For details, see the previous embodiments and will not be repeated here.

[0100] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0101] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the flows and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the specified function in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0102] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device realizes the specified function in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0103] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 steps for the functions specified in one block or multiple blocks.

[0104] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and memory.

[0105] The memory may include non-permanent memory in the form of computer-readable media, random access memory (RAM), and / or non-volatile memory such as read-only memory (ROM) or flash memory (flash RAM). The memory is an example of computer-readable media.

[0106] Computer-readable media includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tapes, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated communication signals and carrier waves.

[0107] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of another identical element in the process, method, commodity or device comprising the element.

[0108] The above are only the preferred embodiments of the present application, and do not impose any formal restrictions on the present application. However, any simple modifications, equivalent changes, and decorations made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A tire pressure control method, characterized in that, Applied to at least one target operating condition among the in-situ turning operating condition and the large-angle turning operating condition, the tire pressure control method includes: Transmit a driving torque signal to the motor of the vehicle, and obtain the feedback torque signal corresponding to the driving torque signal; When receiving the target operating condition switching instruction, detect the road surface condition of the road where the vehicle is currently located, and determine the road surface condition of the road where the vehicle is currently located according to the feedback torque signal, where the road surface condition includes the road surface type; Control the tire pressure of the vehicle according to the road surface condition, including: comparing the current tire pressure of the vehicle with the target tire pressure under the target operating condition; when the current tire pressure does not match the target tire pressure, adjust the tire pressure of the vehicle to the target tire pressure; Wherein, determining the road surface condition of the road where the vehicle is currently located according to the feedback torque signal includes: Query the pre-established mapping table of the feedback torque signal and the road surface type according to the feedback torque signal to obtain the road surface type of the road where the vehicle is currently located.

2. The tire pressure control method according to claim 1, wherein Transmitting the driving torque signal to the motor of the vehicle and obtaining the feedback torque signal corresponding to the driving torque signal includes: Transmit a driving torque signal to the motor of the vehicle through the motor controller of the vehicle, and obtain the feedback torque signal corresponding to the driving torque signal.

3. The tire pressure control method according to claim 1, wherein, It further includes: Perform image recognition on the road surface image of the road where the vehicle is currently located to obtain the road surface condition of the road where the vehicle is currently located.

4. The tire pressure control method according to claim 3, wherein Performing image recognition on the road surface image of the road where the vehicle is currently located to obtain the road surface condition of the road where the vehicle is currently located includes: Input the road surface image into the pre-trained road surface type classification model to obtain the road surface type of the road where the vehicle is currently located.

5. The tire pressure control method according to any one of claims 1-4, characterized in that, The road surface condition includes epoxy floor road surface, cement road surface or asphalt road surface.

6. The tire pressure control method according to claim 1, characterized in that, Controlling the tire pressure of the vehicle according to the road surface condition further includes: Query the pre-established mapping table of the road surface condition and the tire pressure according to the road surface condition to obtain the target tire pressure corresponding to the road surface condition under the target operating condition.

7. The tire pressure control method according to claim 1, characterized in that The tires of the vehicle are connected to the tire pressure control component through air pipes; Adjusting the tire pressure of the vehicle to the target tire pressure includes: Send a tire pressure adjustment signal to the tire pressure control component according to the target tire pressure and the current tire pressure of the vehicle, so as to adjust the tire pressure of the tire to the target tire pressure through the tire pressure control component.

8. The tire pressure control method according to any one of claims 1-4, characterized in that The tire pressure control method further includes: Determine whether the vehicle can operate in the target operating condition according to the environmental information where the vehicle is currently located; When it is determined that the vehicle can operate in the target operating condition, send a prompt message to remind the user; Determine whether to send a target operating condition switching instruction according to the user's response operation to the prompt message.

9. A vehicle controller, characterized in that, Includes: A memory configured to store instructions; And A processor configured to call the instructions from the memory and be able to implement the tire pressure control method according to any one of claims 1 to 8 when executing the instructions.

10. A vehicle, characterized in that, Includes: The vehicle controller according to claim 9.

11. The vehicle according to claim 10, characterized in that, It further includes a tire pressure control component connected to the vehicle controller and the tires of the vehicle, and is configured to adjust the tire pressure to a target tire pressure according to a tire pressure adjustment signal sent by the vehicle controller.

12. The vehicle according to claim 11, characterized in that, The tire pressure control component includes a compressor, an air storage tank and an opening and closing valve. The tire is connected to the opening and closing valve through an air pipe. The air storage tank is connected to the opening and closing valve and the compressor respectively through the air pipe. The opening and closing valve and the compressor are respectively connected to the vehicle controller.

13. A computer-readable storage medium, characterized in that, Instructions are stored on the computer-readable storage medium, and when executed by a processor, the instructions cause the processor to execute the tire pressure control method according to any one of claims 1 to 8.

Images