Tire pressure warning method, device, computer equipment, and storage medium

Abstract

The present invention provides a tire pressure warning method, device, computer device and storage medium, which belong to the technical field of vehicle inspection. The tire pressure warning method includes: acquiring static load parameters and tire pressure actual measurement values ​​of tires; determining a tire pressure safe value based on the static load parameters, the tire pressure actual measurement values, and a preset mapping relationship between the static load parameters, the tire pressure actual measurement values, and the tire pressure safe value; comparing the tire pressure actual measurement values ​​with the tire pressure safe value, and issuing a warning signal when the tire pressure actual measurement values ​​are smaller than the tire pressure safe value. The tire pressure safe value according to the present invention can be adjusted according to the tire's inherent mechanical characteristics and static load parameters, thereby preventing false warning or warning failure caused by the tire pressure safe value not changing while the vehicle load has changed. Furthermore, the static load parameters are collected when the vehicle is stationary, i.e., before the vehicle starts, so that an early safety warning regarding the tire pressure can be provided before the vehicle starts running, thereby ensuring the safety of the vehicle.

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application with the application number CN202211042599.6 filed on August 29, 2022, and the disclosure content thereof is incorporated into this application in its entirety by reference.

[0002] The present invention relates to the technical field of vehicle inspection, and particularly relates to a tire air pressure warning method, device, computer device and storage medium.

Background Art

[0003] Since the load capacity of a tire decreases as the tire air pressure drops, existing vehicle tires usually have a tire air pressure sensor for detecting the tire air pressure, and the detected tire air pressure value can be used for tire air pressure warning. In current tire air pressure warning, the detected tire air pressure value is compared with a preset tire air pressure value. When the load does not change, if the detected tire air pressure value is smaller than the set tire air pressure value, it is considered that the tire air pressure is insufficient, and an alarm is activated to call attention. However, when the load of the vehicle increases, the tire is compressed by the action of the load, and accordingly the tire air pressure rises. At this time, although the detected tire air pressure value is higher than the set tire air pressure value, the air pressure in the tire is generated by the deformation of the pressurized tire, so the load capacity of the tire does not improve with the increase in pressure. Therefore, due to the increase in vehicle load, although the detected tire air pressure value is higher than the set tire air pressure value, there is a situation where the load capacity of the tire does not meet the usage requirements. In the case of a vehicle, especially a fully loaded vehicle, there is a risk that the load capacity of the tire becomes insufficient due to insufficient tire air pressure, but the tire air pressure warning is not activated due to the increase in load.

Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the present invention aims to provide a tire pressure warning method, apparatus, computer equipment, and storage medium to solve the problem in the prior art that an increase in tire pressure due to load cannot activate the tire pressure warning.

[0005] To achieve the above-mentioned objectives and other related objectives, the present invention To obtain the static load parameters of the tire and the measured tire pressure, The safe tire pressure value is determined based on the static load parameter, the measured tire pressure value, and a preset mapping relationship between the static load parameter, the measured tire pressure value, and the safe tire pressure value. The present invention provides a tire pressure warning method that includes comparing the measured tire pressure with the safe tire pressure value, and issuing a warning signal if the measured tire pressure is less than the safe tire pressure value.

[0006] Optionally, obtaining static load parameters involves scanning the internal cavity contour of the tire and determining the static load parameters based on the minimum dimensions of the internal cavity contour in the radial direction of the tire.

[0007] Optionally, the distance between the tire axis and the ground is measured, and the static load parameter is determined based on the distance between the tire axis and the ground.

[0008] Optionally, determining a safe tire pressure value based on the static load parameter, the measured tire pressure, and a preset mapping relationship between the static load parameter and the measured tire pressure and the safe tire pressure value includes determining the static load of the tire based on the measured tire pressure, the static load parameter, and a preset mapping relationship between the static load parameter and the measured tire pressure and the static load, and determining a safe tire pressure value based on the static load, the measured tire pressure, and a preset mapping relationship between the static load and the measured tire pressure and the safe tire pressure value.

[0009] The present invention A radius detection module for obtaining static load parameters of the tire, A tire pressure sensor for obtaining actual tire pressure values, A calculation and comparison module is communicated to the radius detection module and the tire pressure sensor, and determines the tire pressure safety value based on the static load parameter, the measured tire pressure value, and a preset mapping relationship between the static load parameter and the measured tire pressure value and the tire pressure safety value, and compares the measured tire pressure value and the tire pressure safety value. The tire pressure warning device further includes a warning module which is communicably connected to the calculation comparison module and issues a warning signal when the measured tire pressure is smaller than the safe tire pressure value.

[0010] Optionally, the radius detection module is a laser scanner or an ultrasonic detector, which detects the internal cavity of the tire, obtains the internal cavity contour of the tire, and determines the static load parameter based on the minimum dimension of the internal cavity contour in the radial direction of the tire.

[0011] Optionally, the radius detection module is a distance meter mounted on the wheelset, which is used to measure the distance between the tire axis and the ground, and the static load parameter is determined based on the distance between the tire axis and the ground.

[0012] Optionally, the calculation comparison module includes a first calculation unit and a second calculation unit, the first calculation unit calculates the static load of the tire based on the measured tire pressure, the static load parameter, and a preset mapping relationship between the static load parameter and the measured tire pressure and the static load, and the second calculation unit calculates the safe tire pressure of the tire based on the static load, the measured tire pressure, and the static load and a preset mapping relationship between the measured tire pressure and the safe tire pressure value.

[0013] The present invention also provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the steps of the tire pressure warning method described above are realized.

[0014] The present invention also provides a computer-readable storage medium that stores a computer program, which, when executed by a processor, implements the steps of the tire pressure warning method described above.

[0015] As described above, the tire pressure warning method, apparatus, computer equipment, and storage medium according to the present invention have the following beneficial effects. In this invention, a tire pressure safety value is determined by acquiring the static load parameter of the tire and the measured tire pressure, and then the measured tire pressure is compared with the tire pressure safety value. If the measured tire pressure is smaller than the tire pressure safety value, a warning signal is issued to alert the driver. As the load of the vehicle changes, the static load parameter of the tire also changes accordingly, so the load value of the entire vehicle can be obtained from the static load parameter of the tire. The tire pressure safety value can be adjusted according to the inherent mechanical characteristics and static load parameter of the tire, thus preventing false alarms or alarm failures caused by changes in vehicle load but no change in the tire pressure safety value. Furthermore, since the static load parameter is collected when the vehicle is stationary, that is, before the vehicle starts moving, it is possible to provide an early safety warning regarding tire pressure before the vehicle is driven and ensure the safety of the vehicle. [Brief explanation of the drawing]

[0016] [Figure 1] A schematic diagram shows the environment in which the tire pressure warning method according to an embodiment of the present invention is applied. [Figure 2] The flowchart shows steps S10 to S30 of the tire pressure warning method in an embodiment of the present invention. [Figure 3] This diagram shows a schematic structure of a tire pressure warning device according to an embodiment of the present invention. [Figure 4] A schematic diagram (part 1) of the structure of a computer device in an embodiment of the present invention is shown. [Figure 5] A schematic diagram (part 2) of the structure of a computer device in an embodiment of the present invention is shown. [Modes for carrying out the invention]

[0017] Embodiments of the present invention will be described below by specific examples, but other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention may also be carried out or applied by other different specific embodiments, and various details herein may be modified or altered in various ways based on different views and uses without departing from the spirit of the invention.

[0018] Refer to Figures 1 to 5. Note that the illustrations provided in this embodiment are merely schematic representations of the basic concept of the present invention. Therefore, the drawings do not depict the number, shape, and dimensions of components in an actual implementation. Only components relevant to the present invention are shown, and in an actual implementation, the form, number, and proportion of components may be arbitrarily changed, and the layout of components may be more complex. The structures, proportions, sizes, etc., shown in the drawings attached to this specification are merely for the purpose of aligning the disclosed content with the understanding and interpretation of those skilled in the art, and are not intended to limit the conditions under which the present invention can be implemented, and therefore have no technical significance. Furthermore, any structural changes, changes in proportions, or adjustments in size are considered to fall within the scope of the technical content disclosed in this invention without affecting the possible effects and objectives that the present invention can achieve. Moreover, terms such as "up," "down," "left," "right," "center," and "one" referenced herein are merely for clarity of explanation and are not intended to limit the scope within which the present invention can be implemented. Changes or adjustments to their relative relationships are also considered to fall within the scope within which the present invention can be implemented without substantially changing the technical content.

[0019] Before explaining the embodiments of the present invention in detail, first, the environment to which the present invention is applied will be described. As shown in FIG. 1, the technology of the present invention is mainly applied to the tire air pressure warning of vehicle tires. In the current tire air pressure warning, the detected tire air pressure value is compared with a preset tire air pressure value. When the load does not change, if the detected tire air pressure value is smaller than the preset tire air pressure value, it is considered that the tire air pressure is insufficient, and an alarm is activated to call attention. However, when the load of the vehicle increases, the tire is compressed by the action of the load, and accordingly, the tire air pressure rises. At this time, although the detected tire air pressure value is higher than the preset tire air pressure value, the air pressure in the tire is generated by the deformation of the pressurized tire, so the load capacity of the tire does not improve with the increase in pressure. Therefore, due to the increase in vehicle load, the detected tire air pressure value is higher than the preset tire air pressure value, but there is a situation where the load capacity of the tire does not meet the usage requirements. In the case of vehicles, especially fully loaded vehicles, there is a risk that the load capacity of the tire becomes insufficient due to insufficient tire air pressure, but the tire air pressure warning is not activated due to the increase in load.

[0020] Therefore, referring to FIG. 2, in some embodiments, step S10 of obtaining the static load parameter of the tire and the actually measured tire air pressure value, step S20 of determining the tire air pressure safety value based on the static load parameter, the actually measured tire air pressure value, and a preset mapping relationship between the static load parameter, the actually measured tire air pressure value, and the tire air pressure safety value, step S30 of comparing the actually measured tire air pressure value with the tire air pressure safety value and issuing an alarm signal when the actually measured tire air pressure value is smaller than the tire air pressure safety value, are included in the tire air pressure warning method provided.

[0021] In some embodiments, step S10, that is, the step of obtaining the static load parameter, It includes sub-step S11 of scanning and obtaining the internal cavity contour of the tire, and determining the static load parameter based on the minimum dimension of the internal cavity contour in the radial direction of the tire.

[0022] In some embodiments, step S10, that is, the step of obtaining the static load parameter, includes sub-step S12 of obtaining the static load parameter by measuring the distance between the tire axis and the ground.

[0023] The static load parameter can be the static load diameter or the static load radius of the tire, and can be appropriately selected according to the actual situation in the calculation process. When determining the static load parameter of the tire by the minimum dimension of the internal cavity contour in the radial direction of the wheel body, taking the static load diameter of the tire as an example, the diameter of the tire is equal to the sum of the radial dimension of the rim and the radial dimension of the carcass. The radial dimension of the carcass is equal to the sum of the thickness of the tire wall and the radial dimension of the internal cavity contour. In the case of a general vehicle, both the radial dimension of the rim and the thickness of the tire wall are known parameters. Therefore, after obtaining the minimum dimension of the internal cavity contour in the radial direction of the wheel body, the static load diameter of the tire can be obtained by adding the minimum dimension of the internal cavity contour in the radial direction of the wheel body, the radial dimension of the rim, and the thickness of the tire wall. When determining the static load parameter by measuring the distance between the tire axis and the ground, the distance between the tire axis and the ground is the static load diameter of the tire.

[0024] In some embodiments, step S20, that is, the step of determining the tire air pressure safety value based on the static load parameter, the measured value of the tire air pressure, and the preset mapping relationship between the static load parameter, the measured value of the tire air pressure, and the tire air pressure safety value, A substep S21 in which the static load is determined based on the measured tire pressure, the static load parameter, and a preset mapping relationship between the measured tire pressure and the static load, The method includes the static load, the measured tire pressure, and a substep S22 which determines the tire pressure safety value based on a preset mapping relationship between the static load, the measured tire pressure, and the tire pressure safety value.

[0025] The mapping relationship between the static load parameter and the measured tire pressure and static load, and the mapping relationship between the static load and the measured tire pressure and the safe tire pressure value, can all be obtained by methods such as fitting experimental data from a finite number of experiments.

[0026] The present invention also provides a tire pressure alarm device comprising a radius detection module, a tire pressure sensor, a calculation and comparison module, and an alarm module. The radius detection module is used to acquire the static load parameter of the tire, the tire pressure sensor is used to acquire the measured tire pressure of the tire, and the calculation and comparison module is communicatively connected to the radius detection module and the tire pressure sensor. The calculation and comparison module can determine a safe tire pressure value based on the static load parameter, the measured tire pressure value, and a preset mapping relationship between the static load parameter and the measured tire pressure value and the safe tire pressure value, and compare the measured tire pressure value with the safe tire pressure value. The alarm module is communicatively connected to the calculation and comparison module and issues an alarm signal if the measured tire pressure value is smaller than the safe tire pressure value.

[0027] In some embodiments, the radius detection module is a laser scanner or an ultrasonic detector, which detects the internal cavity of the tire, obtains the internal cavity contour of the tire, and the minimum dimension of the internal cavity contour in the radial direction of the tire is the static load parameter. When the vehicle is stationary, the laser scanner or ultrasonic detector images the internal cavity of the tire and obtains the internal cavity contour of the tire. When the wheel is stationary, the minimum dimension of the wheel in the radial direction is the static load parameter of the tire.

[0028] In some further embodiments, the radius detection module is a distance meter mounted on the wheelset, which is used to measure the distance between the tire axis and the ground, and the distance between the tire axis and the ground is the static load parameter. When the wheel is stationary, the distance between the ground and the tire axis, measured by the distance meter along the direction of gravity, is the static load parameter. Specifically, the distance meter is mounted on the wheelset so as to be able to rotate freely around the wheel axis, and because the distance meter can rotate freely, it is always facing the ground under the action of gravity when the vehicle is stationary, and the distance between the ground and the wheel axis, measured by the distance meter, is the static load parameter.

[0029] As shown in Figure 3, in some embodiments, the calculation comparison module includes a first calculation unit and a second calculation unit. The first calculation unit is used to obtain the static load of the tire by fitting based on the radial stiffness ratio of the tire, the static load parameter, and the measured tire pressure, and the second calculation unit is used to calculate the safe value of the tire pressure of the tire based on the static load and the radial stiffness ratio. The radial stiffness ratio of the tire is an intrinsic characteristic of the tire and can be obtained in advance by methods such as experiments.

[0030] Specifically, in some embodiments, the first calculation unit incorporates a first calculation formula relating to the radial stiffness ratio, static load parameter, measured tire pressure, and static load. This first formula allows for the calculation of the static load when the radial stiffness ratio, static load parameter, and measured tire pressure are known. The first calculation formula is obtained by acquiring correlation data between the radial stiffness ratio, static load parameter, measured tire pressure, and static load through a finite number of experiments, and then fitting these data together.

[0031] The second calculation unit incorporates a second calculation formula for static load, radial stiffness ratio, and tire pressure safety value. Using this second formula, the tire pressure safety value can be calculated when the static load and radial stiffness ratio are known. The second calculation formula itself is obtained by acquiring correlation data between static load, radial stiffness ratio, and tire pressure safety value through a finite number of experiments, and then fitting these data together.

[0032] In several other embodiments, a first model and a second model are established and trained using a first training dataset and a second training dataset, respectively, where the first training dataset includes radial stiffness, static load parameters, measured tire pressure, and static load, and the second training dataset includes static load, radial stiffness, and a safe tire pressure value. Here, the first and second training datasets can be obtained through a finite number of experiments. The first unit incorporates the trained first model, and the second unit incorporates the trained second model. Given that the radial stiffness, static load parameters, and measured tire pressure are known, the corresponding static load can be obtained using the trained first model. Then, based on the static load and radial stiffness, the corresponding safe tire pressure value can be obtained using the trained second model.

[0033] In some embodiments, the calculation comparison module also includes a comparison module which receives the tire pressure safety value calculated by the second calculation unit and the actual tire pressure value detected by the tire pressure sensor, compares the two, and if the actual tire pressure value is lower than the tire pressure safety value, transmits the comparison result to the alarm module, which emits an alarm signal such as voice, optical, or vibration to inform the driver of insufficient tire pressure.

[0034] Since static load parameters are collected when the vehicle is stationary, that is, before the vehicle starts moving, it is possible to provide early safety warnings regarding tire pressure before the vehicle is driven, thereby ensuring vehicle safety.

[0035] In some embodiments, a computer device is provided, which may be a server, the internal structure of which is shown in Figure 4. The computer device includes a processor, memory, a network interface, and a database connected via a system bus. Here, the processor of the computer device is used to provide computation and control functions. The memory of the computer device includes non-volatile and / or volatile storage media, internal memory. The non-volatile storage media stores an operating system, computer programs, and a database. The internal memory provides the operating environment for the operating system and computer programs in the non-volatile storage media. The network interface of the computer device is used to communicate with external clients via a network connection. When the computer program is executed by the processor, the server-side functions or steps of the tire pressure warning method are realized.

[0036] In one embodiment, a computer device is provided, which may be a client, and its internal structure is shown in Figure 5. The computer device includes a processor, memory, a network interface, a display, and input devices connected via a system bus. Here, the processor of the computer device is used to provide computation and control functions. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides the operating environment for the operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external server via a network connection. When the computer program is executed by the processor, the client-side functions or steps of the tire pressure warning method are realized.

[0037] The present invention also provides a computer-readable storage medium that stores a computer program, which, when executed by a processor, implements the steps of the tire pressure warning method described above.

[0038] Furthermore, the above functions or steps that can be implemented by a computer-readable storage medium or computer equipment can be described in the relevant descriptions of the server-side and client-side in the embodiments of the method described above, and are omitted here to avoid repetition.

[0039] As those skilled in the art will understand, all or part of the processes in the methods of the above embodiments may be implemented by a computer program that instructs the relevant hardware, the computer program may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of each embodiment of the above methods. Herein, any reference to memory, storage device, database or other medium used in each embodiment provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random-access memory (RAM) or external cache memory. While RAM has been explained as being available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data-rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), sync-link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), it is not limited to these.

[0040] In summary, the tire pressure warning method, apparatus, computer equipment, and storage medium according to the present invention calculate a safe tire pressure value by acquiring the static load parameter of the tire and the measured tire pressure, then compares the measured tire pressure with the safe tire pressure value, and issues a warning signal to alert the driver if the measured tire pressure is smaller than the safe tire pressure value. As the vehicle load changes, the static load parameter of the tire also changes accordingly, so the total load value of the vehicle can be obtained from the static load parameter of the tire. The safe tire pressure value can be adjusted according to the tire's inherent mechanical characteristics and static load parameter, thus preventing false alarms or alarm failures caused by changes in vehicle load but no change in the safe tire pressure value. Furthermore, since the static load parameter is collected when the vehicle is stationary, that is, before the vehicle starts moving, an early safety warning regarding tire pressure can be provided before the vehicle starts moving, thereby avoiding delayed early warnings and safety risks caused by delayed early warnings resulting from early warnings of tire pressure during driving.

[0041] The above embodiments are for illustrative purposes only to illustrate the principles and effects of the present invention and do not limit the invention. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the invention. Accordingly, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical idea disclosed herein shall still be included within the claims of the present invention.

Claims

1. To obtain the radial stiffness ratio of the tire, the static load parameter of the tire, and the measured value of the tire air pressure, The safe tire pressure value is determined based on the radial stiffness ratio, the static load parameter, the measured tire pressure value, and a preset mapping relationship between the static load parameter and the measured tire pressure value and the safe tire pressure value. The system includes comparing the measured tire pressure with the safe tire pressure value, and issuing a warning signal if the measured tire pressure is less than the safe tire pressure value. Determining the tire pressure safety value based on the radial stiffness ratio, the static load parameter, the measured tire pressure value, and a preset mapping relationship between the static load parameter and the measured tire pressure value and the tire pressure safety value is: The static load is determined based on the radial stiffness ratio, the measured tire pressure, the static load parameter, and a preset mapping relationship between the radial stiffness ratio, the static load parameter, the measured tire pressure, and the static load. This includes determining the tire pressure safety value based on the static load, the radial stiffness ratio, and a preset mapping relationship between the static load, the radial stiffness ratio, and the tire pressure safety value, The static load parameter is the static load diameter of the tire or the static load radius of the tire. A tire pressure warning method characterized by the following features.

2. The tire pressure warning method according to claim 1, characterized in that obtaining static load parameters includes scanning the internal cavity contour of the tire and determining the static load parameters based on the minimum dimensions of the internal cavity contour in the radial direction of the tire.

3. The tire pressure warning method according to claim 1, characterized in that obtaining a static load parameter includes measuring the distance between the tire axis and the ground, and determining the static load parameter based on the distance between the tire axis and the ground.

4. A radius detection module for obtaining static load parameters of the tire, A tire pressure sensor for obtaining actual tire pressure values, A calculation comparison module that is communicably connected to the radius detection module and the tire pressure sensor, and is used to determine a tire pressure safety value based on the previously acquired radial stiffness ratio of the tire, the static load parameter, the measured tire pressure value, and the static load parameter and a preset mapping relationship between the measured tire pressure value and the tire pressure safety value, and to compare the measured tire pressure value and the tire pressure safety value, An alarm module, which is communicably connected to the calculation comparison module, includes an alarm module that issues an alarm signal when the measured tire pressure is less than the safe tire pressure value, The calculation comparison module includes a first calculation unit and a second calculation unit, wherein the first calculation unit calculates the static load of the tire based on the radial stiffness ratio, the measured tire pressure, the static load parameter, and a preset mapping relationship between the measured tire pressure and the static load, and the second calculation unit calculates the safe tire pressure value of the tire based on the static load, the radial stiffness ratio, and a preset mapping relationship between the static load and the radial stiffness ratio and the safe tire pressure value. The static load parameter is the static load diameter of the tire or the static load radius of the tire. A tire pressure warning device characterized by the following features.

5. The tire pressure warning device according to claim 4, wherein the radius detection module is a laser scanner or an ultrasonic detector, and the radius detection module detects the internal cavity of the tire, obtains the internal cavity contour of the tire, and determines the static load parameter based on the minimum dimension of the internal cavity contour in the radial direction of the tire.

6. The tire pressure warning device according to claim 4, characterized in that the radius detection module is a distance meter provided on the wheelset, the distance meter is used to measure the distance between the tire axis and the ground, and the static load parameter is determined based on the distance between the tire axis and the ground.

7. A computer device comprising memory, a processor, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the steps of the tire pressure warning method described in any one of claims 1 to 3 are realized.

8. A computer-readable storage medium in which a computer program is stored, characterized in that when the computer program is executed by a processor, the steps of the tire pressure warning method described in any one of claims 1 to 3 are realized.

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