Tire wear alarm method and device based on wheel speed signal

Abstract

The invention relates to a tire wear alarm method and device based on a wheel speed signal, and the method comprises the steps: obtaining a steering wheel angle signal of a current vehicle, and judging the driving state of the current vehicle according to the steering wheel angle signal, and the driving state comprises a straight driving state and a non-straight driving state; if the current vehicle is in the straight driving state, the real-time rolling radius of a tire of the current vehicle is calculated, the real-time rolling radius of the tire is compared with a preset abrasion threshold value, and when the real-time rolling radius of the tire is smaller than or equal to the preset abrasion threshold value, the current vehicle is controlled to conduct acoustic and / or optical tire abrasion alarming on the target user; and if the current vehicle is in the nonlinear driving state, no acoustic and / or optical tire wear alarm is given to the target user. The tire wear alarm can be given according to the wheel speed signal, so that a driver can be visually reminded to check the tire wear condition in time and replace the tire, and the safety and reliability of vehicle driving are greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to a tire wear alarm method and device based on wheel speed signals. Background Art

[0002] At present, most vehicle tires use bosses in the grooves of the tire tread to indicate whether the tire has reached the wear limit; however, the location of the bosses is relatively hidden, and if the driver lacks relevant experience, it is difficult to replace the tire in time, which greatly affects the driving safety of the vehicle and needs to be solved urgently. Summary of the invention

[0003] The present application provides a tire wear alarm method and device based on wheel speed signals to solve the problems in the prior art that the boss position is relatively hidden, and if the driver lacks relevant experience, it is difficult to change the tire in time, which greatly affects the driving safety of the vehicle.

[0004] The first aspect of the present application provides a tire wear alarm method based on a wheel speed signal, comprising the following steps: obtaining a steering wheel angle signal of a current vehicle; judging a driving state of the current vehicle according to the steering wheel angle signal, wherein the driving state includes a straight driving state and a non-straight driving state; if the current vehicle is in the straight driving state, calculating a real-time rolling radius of the tire of the current vehicle, and comparing the real-time rolling radius of the tire with a preset wear threshold, so as to control the current vehicle to perform an acoustic and / or optical tire wear alarm to a target user when the real-time rolling radius of the tire is less than or equal to the preset wear threshold.

[0005] Optionally, in one embodiment of the present application, determining the driving state of the current vehicle based on the steering wheel angle signal includes: utilizing the electronic steering assist system of the current vehicle to obtain the steering wheel angle signal, and determining the driving state of the current vehicle based on the steering wheel angle signal; when the steering wheel angle signal is a preset threshold, determining that the current vehicle is in the straight driving state; when the steering wheel angle signal is not the preset threshold, determining that the current vehicle is in the non-straight driving state.

[0006] Optionally, in one embodiment of the present application, before calculating the real-time rolling radius of the tire of the current vehicle, it also includes: obtaining the vehicle speed information of the current vehicle through the on-board navigation system of the current vehicle; obtaining the tire speed information of the current vehicle through the wheel speed sensor of the current vehicle, and sending the tire speed information to a preset vehicle body stability controller.

[0007] Optionally, in one embodiment of the present application, if the current vehicle is in the straight-line driving state, the real-time rolling radius of the tire of the current vehicle is calculated, and the real-time rolling radius of the tire is compared with a preset wear threshold, so that when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, the current vehicle is controlled to perform acoustic and / or optical tire wear alarms to the target user, including: calculating the real-time rolling radius of the tire based on the vehicle speed information and the tire speed information; comparing the real-time rolling radius of the tire with the preset wear threshold, and when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, calculating the wear difference between the real-time rolling radius of the tire and the preset wear threshold; determining the tire wear status of the current vehicle based on the wear difference and the preset wear alarm threshold, and performing corresponding tire wear alarm operations according to the tire wear status.

[0008] Optionally, in one embodiment of the present application, the tire wear status of the current vehicle is determined based on the wear difference and the preset wear alarm threshold, and a corresponding tire wear alarm operation is performed according to the tire wear status, including: judging whether the wear difference is greater than the preset wear alarm threshold; if the wear difference is greater than the preset wear alarm threshold, determining that the current vehicle is in a severe tire wear state, and controlling the current vehicle to perform acoustic and optical tire wear alarms to the target user, and simultaneously obtaining the current position information of the current vehicle to search for the target vehicle maintenance site closest to the current vehicle according to the current position information, and controlling the current vehicle to generate a navigation path between the current vehicle and the target vehicle maintenance site, so that the current vehicle travels to the target vehicle maintenance site according to the navigation path for vehicle maintenance; if the wear difference is less than or equal to the preset wear alarm threshold, determining that the current vehicle is in a slight tire wear state, and controlling the current vehicle to perform acoustic or optical tire wear alarms to the target user.

[0009] The second aspect of the present application provides a tire wear alarm device based on a wheel speed signal, including: an acquisition module for acquiring a steering wheel angle signal of a current vehicle; a judgment module for judging the driving state of the current vehicle according to the steering wheel angle signal, wherein the driving state includes a straight driving state and a non-straight driving state; an alarm module for calculating the real-time rolling radius of the tire of the current vehicle if the current vehicle is in the straight driving state, and comparing the real-time rolling radius of the tire with a preset wear threshold, so as to control the current vehicle to perform acoustic and / or optical tire wear alarms to a target user when the real-time rolling radius of the tire is less than or equal to the preset wear threshold.

[0010] Optionally, in one embodiment of the present application, the judgment module includes: an analysis unit, used to obtain the steering wheel angle signal by using the electronic steering assist system of the current vehicle, and judge the driving state of the current vehicle according to the steering wheel angle signal; a first judgment unit, used to judge that the current vehicle is in the straight driving state when the steering wheel angle signal is a preset threshold; and a second judgment unit, used to judge that the current vehicle is in the non-straight driving state when the steering wheel angle signal is not the preset threshold.

[0011] Optionally, in one embodiment of the present application, it also includes: a first sending module, used to obtain the vehicle speed information of the current vehicle through the vehicle-mounted navigation system of the current vehicle before calculating the real-time rolling radius of the tire of the current vehicle; a second sending module, used to obtain the tire speed information of the current vehicle through the wheel speed sensor of the current vehicle, and send the tire speed information to a preset vehicle body stability controller.

[0012] Optionally, in one embodiment of the present application, the alarm module includes: a calculation unit, used to calculate the real-time rolling radius of the tire based on the vehicle speed information and the tire speed information; a comparison unit, used to compare the real-time rolling radius of the tire with the preset wear threshold, and when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, calculate the wear difference between the real-time rolling radius of the tire and the preset wear threshold; an execution unit, used to determine the tire wear status of the current vehicle based on the wear difference and the preset wear alarm threshold, and perform corresponding tire wear alarm operations according to the tire wear status.

[0013] Optionally, in one embodiment of the present application, the alarm module also includes: a first analysis unit, used to determine whether the wear difference is greater than a preset wear alarm threshold; if the wear difference is greater than the preset wear alarm threshold, it is determined that the current vehicle is in a severe tire wear state, and the current vehicle is controlled to perform acoustic and optical tire wear alarms to the target user, and at the same time, the current position information of the current vehicle is obtained to search for the target vehicle maintenance site closest to the current vehicle according to the current position information, and the current vehicle is controlled to generate a navigation path between the current vehicle and the target vehicle maintenance site, so that the current vehicle travels to the target vehicle maintenance site according to the navigation path for vehicle maintenance; a second analysis unit, used to determine that the current vehicle is in a slight tire wear state if the wear difference is less than or equal to the preset wear alarm threshold, and the current vehicle is controlled to perform acoustic or optical tire wear alarms to the target user.

[0014] The third aspect of the present application provides a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the tire wear alarm method based on the wheel speed signal as described in the above embodiment.

[0015] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, which, when executed by a processor, implements the above tire wear alarm method based on a wheel speed signal.

[0016] The fifth aspect of the present application provides a computer program product, including a computer program, which is executed to implement the above-mentioned tire wear alarm method based on wheel speed signal.

[0017] Therefore, the embodiments of the present application have the following beneficial effects:

[0018] The embodiment of the present application can obtain the steering wheel angle signal of the current vehicle, and judge the driving state of the current vehicle according to the steering wheel angle signal, wherein the driving state includes a straight driving state and a non-straight driving state; if the current vehicle is in a straight driving state, the real-time rolling radius of the tire of the current vehicle is calculated, and the real-time rolling radius of the tire is compared with the preset wear threshold, so that when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, the current vehicle is controlled to perform an acoustic and / or optical tire wear alarm to the target user; if the current vehicle is in a non-straight driving state, the acoustic and / or optical tire wear alarm is not performed to the target user. The present application can perform a tire wear alarm according to the wheel speed signal, so as to intuitively remind the driver to check the tire wear in time and replace it, which greatly improves the safety and reliability of vehicle driving. Therefore, the problem that the boss position is relatively hidden in the prior art, if the driver lacks relevant experience, it is difficult to replace the tire in time, which greatly affects the driving safety of the vehicle is solved.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A flowchart of a tire wear alarm method based on a wheel speed signal provided according to an embodiment of the present application;

[0022] Figure 2A schematic diagram of the hardware architecture of a tire wear alarm method based on a wheel speed signal provided in one embodiment of the present application;

[0023] Figure 3 A schematic diagram of the execution logic of a tire wear warning method based on a wheel speed signal provided in one embodiment of the present application;

[0024] Figure 4 is an exemplary diagram of a tire wear warning device based on a wheel speed signal according to an embodiment of the present application;

[0025] Figure 5 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application.

[0026] Among them, 10-a tire wear alarm device based on a wheel speed signal; 100-a judgment module, 200-an alarm module, 300-a non-straight driving module; 501-a memory, 502-a processor, 503-a communication interface. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0028] The following describes the tire wear alarm method and device based on wheel speed signal of the embodiment of the present application with reference to the accompanying drawings. In view of the problems mentioned in the above background technology, the present application provides a tire wear alarm method based on wheel speed signal, in which the steering wheel angle signal of the current vehicle is obtained, and the driving state of the current vehicle is judged according to the steering wheel angle signal, wherein the driving state includes straight driving state and non-straight driving state; if the current vehicle is in a straight driving state, the real-time rolling radius of the tire of the current vehicle is calculated, and the real-time rolling radius of the tire is compared with the preset wear threshold, so that when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, the current vehicle is controlled to perform acoustic and / or optical tire wear alarm to the target user; if the current vehicle is in a non-straight driving state, the acoustic and / or optical tire wear alarm is not performed to the target user. The present application can perform tire wear alarm according to the wheel speed signal, so as to intuitively remind the driver to check and replace the tire wear in time, which greatly improves the safety and reliability of vehicle driving. Therefore, the problem that the boss position is relatively hidden in the prior art, if the driver is not experienced enough, it is difficult to replace the tire in time, which greatly affects the driving safety of the vehicle is solved.

[0029] Specifically, Figure 1A flowchart of a tire wear alarm method based on wheel speed signals provided in an embodiment of the present application.

[0030] like Figure 1 As shown, the tire wear alarm method based on wheel speed signal includes the following steps:

[0031] In step S101, a steering wheel angle signal of the current vehicle is obtained.

[0032] In step S102, the current driving state of the vehicle is determined according to the steering wheel angle signal, wherein the driving state includes a straight driving state and a non-straight driving state.

[0033] The embodiment of the present application can first obtain the steering wheel angle signal of the current vehicle through the electronic steering power system to determine the driving state of the current vehicle, that is, to determine whether the vehicle is driving straight, thereby providing reliable data guidance and basis for subsequent tire wear alarms.

[0034] Optionally, in one embodiment of the present application, the driving state of the current vehicle is determined based on a steering wheel angle signal, including: utilizing the current vehicle's electronic steering assist system to obtain a steering wheel angle signal, and determining the driving state of the current vehicle based on the steering wheel angle signal; when the steering wheel angle signal is a preset threshold, determining that the current vehicle is in a straight driving state; when the steering wheel angle signal is not a preset threshold, determining that the current vehicle is in a non-straight driving state.

[0035] As an achievable method, an embodiment of the present application can obtain a steering wheel angle signal of the current vehicle through an electronic steering assist system and send it to a body stability controller; when the body stability controller receives a steering wheel angle signal of 0 from the electronic steering assist system, it can be determined that the vehicle is traveling in a straight line at this time; when the body stability controller receives a steering wheel angle signal of not 0 from the electronic steering assist system, it can be determined that the vehicle is not traveling in a straight line at this time.

[0036] Therefore, the embodiments of the present application provide important data support for the implementation of subsequent tire wear alarms by performing real-time analysis and judgment on the steering wheel angle signal.

[0037] In step S103, if the current vehicle is in a straight-line driving state, the real-time rolling radius of the tire of the current vehicle is calculated, and the real-time rolling radius of the tire is compared with a preset wear threshold, so that when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, the current vehicle is controlled to provide an acoustic and / or optical tire wear alarm to the target user.

[0038] Furthermore, the embodiments of the present application can calculate the real-time rolling radius of the tire when the current vehicle is in a straight-line driving state, and compare the real-time rolling radius of the tire with a preset wear threshold, so as to perform an acoustic alarm, an optical alarm, or both an acoustic and optical tire wear alarm when the real-time rolling radius of the tire is less than or equal to the preset wear threshold.

[0039] In addition, when the steering wheel angle signal is not 0, it is determined that the vehicle is not traveling in a straight line. It is understandable that due to the speed difference between the inner and outer wheels when the wheels are turning, there is an error in the calculated tire rolling radius, and the body stability controller may falsely alarm. Therefore, the body stability controller does not calculate the tire rolling radius at this time, and there is no need to issue a tire wear alarm.

[0040] Optionally, in one embodiment of the present application, before calculating the real-time rolling radius of the tire of the current vehicle, it also includes: obtaining the vehicle speed information of the current vehicle through the on-board navigation system of the current vehicle; obtaining the tire speed information of the current vehicle through the wheel speed sensor of the current vehicle, and sending the tire speed information to a preset vehicle body stability controller.

[0041] It should be noted that before calculating the real-time rolling radius of the tire of the current vehicle, the embodiment of the present application also needs to obtain the current vehicle speed information through the vehicle navigation (such as the GPS system), such as Figure 2 As shown, and sends it to the body stability controller; secondly, the embodiment of the present application also needs to collect the tire speed signal of the current vehicle through the wheel speed sensor, and send it to the body stability controller, thereby meeting the data requirements for calculating the real-time rolling radius of the tires of the current vehicle and ensuring the reliability of the calculated real-time rolling radius of the tires.

[0042] Optionally, in one embodiment of the present application, if the current vehicle is in a straight-line driving state, the real-time rolling radius of the tire of the current vehicle is calculated, and the real-time rolling radius of the tire is compared with a preset wear threshold, so that when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, the current vehicle is controlled to perform acoustic and / or optical tire wear alarms to the target user, including: calculating the real-time rolling radius of the tire based on vehicle speed information and tire speed information; comparing the real-time rolling radius of the tire with a preset wear threshold, and when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, calculating the wear difference between the real-time rolling radius of the tire and the preset wear threshold; determining the tire wear status of the current vehicle based on the wear difference and the preset wear alarm threshold, and performing corresponding tire wear alarm operations according to the tire wear status.

[0043] In the actual implementation process, the embodiment of the present application can receive relevant information such as vehicle speed and tire speed through the vehicle body stability controller, and calculate the rolling radius of the tire at this time by receiving the real-time tire speed and vehicle speed information in combination with the rolling radius calculation formula. The rolling radius calculation formula is as follows:

[0044] r = v / w

[0045] Among them, v is the current vehicle speed, w is the tire speed, and r is the real-time rolling radius of the tire.

[0046] After calculating the real-time tire rolling radius r, the embodiment of the present application compares it with the tire wear limit r0 (i.e., wear threshold) pre-stored and set by the vehicle body stability controller; Figure 3 As shown, if r≤r0, the body stability controller needs to send an alarm signal to the instrument to remind the driver to check and replace the tire; if r>r0, the body stability controller does not send an alarm signal.

[0047] For example, when the real-time rolling radius of the tire is less than the preset wear threshold, the embodiment of the present application can remind the driver through text or graphics in the vehicle instrument that the tire has been worn to the limit and needs to be replaced, and by broadcasting "The current vehicle tire wear is quite serious, it is recommended to replace it in time", etc., to provide the user with a comprehensive, three-dimensional and intuitive tire wear alarm.

[0048] Optionally, in one embodiment of the present application, the tire wear status of the current vehicle is determined based on the wear difference and the preset wear alarm threshold, and a corresponding tire wear alarm operation is performed according to the tire wear status, including: judging whether the wear difference is greater than the preset wear alarm threshold; if the wear difference is greater than the preset wear alarm threshold, determining that the current vehicle is in a severe tire wear state, and controlling the current vehicle to perform acoustic and optical tire wear alarms to the target user, while obtaining the current position information of the current vehicle to search for the target vehicle maintenance site closest to the current vehicle according to the current position information, and controlling the current vehicle to generate a navigation path between the current vehicle and the target vehicle maintenance site, so that the current vehicle travels to the target vehicle maintenance site according to the navigation path for vehicle maintenance; if the wear difference is less than or equal to the preset wear alarm threshold, determining that the current vehicle is in a slight tire wear state, and controlling the current vehicle to perform acoustic or optical tire wear alarms to the target user.

[0049] In addition, as a feasible method, the embodiment of the present application can also calculate the wear difference between the real-time rolling radius of the tire and the wear threshold, and compare the wear difference with the preset wear alarm threshold. If the wear difference is greater than the preset wear alarm threshold, it is determined that the current vehicle is in a state of severe tire wear. The embodiment of the present application can control the current vehicle to perform the above-mentioned acoustic and optical tire wear alarms to the target user, and at the same time, it can obtain the current position information of the current vehicle, so as to search for the target vehicle repair shop or 4S shop closest to the current vehicle according to the current position information, and generate a navigation path between the current vehicle and the target vehicle repair site, so that the current vehicle can travel to the target vehicle repair site according to the navigation path for timely replacement and repair of the vehicle tires; if the wear difference is less than or equal to the preset wear alarm threshold, it is determined that the current vehicle is in a state of slight tire wear, and the above-mentioned acoustic or optical tire wear alarm can be performed to the target user.

[0050] Therefore, the embodiments of the present application analyze and judge the different degrees of tire wear of the vehicle to execute corresponding alarm and maintenance strategies, thereby greatly improving the safety and reliability of the vehicle.

[0051] According to the tire wear alarm method based on wheel speed signal proposed in the embodiment of the present application, the steering wheel angle signal of the current vehicle is obtained, and the driving state of the current vehicle is judged according to the steering wheel angle signal, wherein the driving state includes a straight driving state and a non-straight driving state; if the current vehicle is in a straight driving state, the real-time rolling radius of the tire of the current vehicle is calculated, and the real-time rolling radius of the tire is compared with the preset wear threshold, so that when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, the current vehicle is controlled to perform acoustic and / or optical tire wear alarms to the target user; if the current vehicle is in a non-straight driving state, no acoustic and / or optical tire wear alarms are performed to the target user. The present application can perform tire wear alarms according to wheel speed signals, thereby intuitively reminding the driver to check the tire wear in time and replace it, greatly improving the safety and reliability of vehicle driving.

[0052] Next, a tire wear warning device based on a wheel speed signal according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0053] Figure 4 It is a block diagram of a tire wear alarm device based on wheel speed signal according to an embodiment of the present application.

[0054] like Figure 4 As shown, the tire wear alarm device 10 based on the wheel speed signal includes: an acquisition module 100 , a judgment module 200 and an alarm module 300 .

[0055] Among them, the acquisition module 100 is used to obtain the steering wheel angle signal of the current vehicle.

[0056] The judgment module 200 is used to judge the current driving state of the vehicle according to the steering wheel angle signal, wherein the driving state includes a straight driving state and a non-straight driving state.

[0057] The alarm module 300 is used to calculate the real-time rolling radius of the tire of the current vehicle if the current vehicle is in a straight-line driving state, and compare the real-time rolling radius of the tire with a preset wear threshold, so as to control the current vehicle to provide an acoustic and / or optical tire wear alarm to the target user when the real-time rolling radius of the tire is less than or equal to the preset wear threshold.

[0058] Optionally, in one embodiment of the present application, the determination module 200 includes: an analysis unit, a first determination unit and a second determination unit.

[0059] The analysis unit is used to obtain a steering wheel angle signal using the electronic steering assist system of the current vehicle, and to determine the driving state of the current vehicle according to the steering wheel angle signal.

[0060] The first determination unit is used to determine that the current vehicle is in a straight-line driving state when the steering wheel angle signal reaches a preset threshold.

[0061] The second determination unit is used to determine that the current vehicle is in a non-straight driving state when the steering wheel angle signal is not a preset threshold.

[0062] Optionally, in one embodiment of the present application, the tire wear alarm device 10 based on the wheel speed signal of the embodiment of the present application further includes: a first sending module and a second sending module.

[0063] Wherein, the first sending module is used to obtain the speed information of the current vehicle through the vehicle-mounted navigation system of the current vehicle before calculating the real-time rolling radius of the tire of the current vehicle.

[0064] The second sending module is used to obtain the tire speed information of the current vehicle through the wheel speed sensor of the current vehicle, and send the tire speed information to a preset vehicle body stability controller.

[0065] Optionally, in one embodiment of the present application, the alarm module 300 includes: a calculation unit, a comparison unit and an execution unit.

[0066] The calculation unit is used to calculate the real-time rolling radius of the tire according to the vehicle speed information and the tire rotation speed information.

[0067] The comparison unit is used to compare the real-time rolling radius of the tire with a preset wear threshold, and when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, calculate the wear difference between the real-time rolling radius of the tire and the preset wear threshold.

[0068] The execution unit is used to determine the tire wear status of the current vehicle based on the wear difference and the preset wear alarm threshold, and execute the corresponding tire wear alarm operation according to the tire wear status.

[0069] Optionally, in one embodiment of the present application, the alarm module 300 further includes: a first analysis unit and a second analysis unit.

[0070] The first analysis unit is used to determine whether the wear difference is greater than a preset wear alarm threshold. If the wear difference is greater than the preset wear alarm threshold, it is determined that the current vehicle is in a severe tire wear state, and the current vehicle is controlled to provide acoustic and optical tire wear alarms to a target user. At the same time, the current position information of the current vehicle is obtained to search for a target vehicle maintenance site closest to the current vehicle according to the current position information, and the current vehicle is controlled to generate a navigation path between the current vehicle and the target vehicle maintenance site, so that the current vehicle travels to the target vehicle maintenance site according to the navigation path for vehicle maintenance.

[0071] The second analysis unit is used to determine that the current vehicle is in a state of slight tire wear if the wear difference is less than or equal to a preset wear alarm threshold, and control the current vehicle to provide an acoustic or optical tire wear alarm to a target user.

[0072] It should be noted that the above explanation of the embodiment of the tire wear alarm method based on the wheel speed signal is also applicable to the tire wear alarm device based on the wheel speed signal of this embodiment, which will not be repeated here.

[0073] The tire wear alarm device based on the wheel speed signal proposed in the embodiment of the present application includes a judgment module for obtaining the steering wheel angle signal of the current vehicle and judging the driving state of the current vehicle according to the steering wheel angle signal, wherein the driving state includes a straight driving state and a non-straight driving state; an alarm module for calculating the real-time rolling radius of the tire of the current vehicle if the current vehicle is in a straight driving state, and comparing the real-time rolling radius of the tire with a preset wear threshold, so as to control the current vehicle to perform an acoustic and / or optical tire wear alarm to the target user when the real-time rolling radius of the tire is less than or equal to the preset wear threshold; a non-straight driving module for not performing an acoustic and / or optical tire wear alarm to the target user if the current vehicle is in a non-straight driving state. The present application can perform a tire wear alarm according to the wheel speed signal, thereby intuitively reminding the driver to check the tire wear in time and replace it, greatly improving the safety and reliability of vehicle driving.

[0074] Figure 5 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle may include:

[0075] A memory 501 , a processor 502 , and a computer program stored in the memory 501 and executable on the processor 502 .

[0076] When the processor 502 executes the program, the tire wear alarm method based on the wheel speed signal provided in the above embodiment is implemented.

[0077] Furthermore, the vehicle also includes:

[0078] The communication interface 503 is used for communication between the memory 501 and the processor 502 .

[0079] The memory 501 is used to store computer programs that can be executed on the processor 502 .

[0080] The memory 501 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0081] If the memory 501, the processor 502 and the communication interface 503 are implemented independently, the communication interface 503, the memory 501 and the processor 502 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0082] Optionally, in a specific implementation, if the memory 501, the processor 502 and the communication interface 503 are integrated on a chip, the memory 501, the processor 502 and the communication interface 503 can communicate with each other through an internal interface.

[0083] The processor 502 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0084] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above tire wear alarm method based on a wheel speed signal.

[0085] An embodiment of the present application also provides a computer program product, including a computer program, which, when executed, is used to implement the above-mentioned tire wear alarm method based on wheel speed signals.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0087] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0089] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary and then storing it in a computer memory.

[0090] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0091] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0092] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0093] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A tire wear alarm method based on wheel speed signal, characterized in that: The following steps are involved: Get the steering wheel angle signal of the current vehicle; Determining the driving state of the current vehicle according to the steering wheel angle signal, wherein the driving state includes a straight-line driving state and a non-straight-line driving state; If the current vehicle is in the straight-line driving state, the real-time rolling radius of the tire of the current vehicle is calculated, and the real-time rolling radius of the tire is compared with a preset wear threshold, so that when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, the current vehicle is controlled to provide an acoustic and / or optical tire wear alarm to the target user.

2. The method according to claim 1, characterized in that The determining the current driving state of the vehicle according to the steering wheel angle signal comprises: Acquiring the steering wheel angle signal by using the electronic steering assist system of the current vehicle, and determining the driving state of the current vehicle according to the steering wheel angle signal; When the steering wheel angle signal reaches a preset threshold, determining that the current vehicle is in the straight-line driving state; When the steering wheel angle signal is not the preset threshold, it is determined that the current vehicle is in the non-straight driving state.

3. The method according to claim 1, characterized in that Before calculating the real-time rolling radius of the tire of the current vehicle, the method further includes: Acquiring the vehicle speed information of the current vehicle through the vehicle-mounted navigation system of the current vehicle; The tire speed information of the current vehicle is obtained through the wheel speed sensor of the current vehicle, and the tire speed information is sent to a preset vehicle body stability controller.

4. The method according to claim 3, characterized in that If the current vehicle is in the straight-line driving state, the real-time rolling radius of the tire of the current vehicle is calculated, and the real-time rolling radius of the tire is compared with a preset wear threshold, so as to control the current vehicle to perform an acoustic and / or optical tire wear alarm to a target user when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, including: Calculating the real-time rolling radius of the tire according to the vehicle speed information and the tire speed information; Comparing the real-time rolling radius of the tire with the preset wear threshold, and when the real-time rolling radius of the tire is less than or equal to the preset wear threshold, calculating the wear difference between the real-time rolling radius of the tire and the preset wear threshold; Based on the wear difference and a preset wear alarm threshold, the tire wear state of the current vehicle is determined, and a corresponding tire wear alarm operation is performed according to the tire wear state.

5. The method according to claim 4, characterized in that The determining the tire wear state of the current vehicle based on the wear difference and a preset wear alarm threshold, and performing a corresponding tire wear alarm operation according to the tire wear state, includes: Determine whether the wear difference is greater than a preset wear alarm threshold value. If the wear difference is greater than the preset wear alarm threshold value, determine that the current vehicle is in a severe tire wear state, and control the current vehicle to perform acoustic and optical tire wear alarms to the target user, and simultaneously obtain the current position information of the current vehicle to search for a target vehicle maintenance site closest to the current vehicle according to the current position information, and control the current vehicle to generate a navigation path between the current vehicle and the target vehicle maintenance site, so that the current vehicle travels to the target vehicle maintenance site according to the navigation path for vehicle maintenance; If the wear difference is less than or equal to the preset wear alarm threshold, it is determined that the current vehicle is in a state of slight tire wear, and the current vehicle is controlled to provide an acoustic or optical tire wear alarm to the target user.

6. A tire wear alarm device based on wheel speed signal, characterized in that: include: An acquisition module is used to acquire a steering wheel angle signal of the current vehicle; A judgment module, used for judging the driving state of the current vehicle according to the steering wheel angle signal, wherein the driving state includes a straight-line driving state and a non-straight-line driving state; The alarm module is used to calculate the real-time rolling radius of the tire of the current vehicle if the current vehicle is in the straight-line driving state, and compare the real-time rolling radius of the tire with a preset wear threshold, so as to control the current vehicle to provide an acoustic and / or optical tire wear alarm to a target user when the real-time rolling radius of the tire is less than or equal to the preset wear threshold.

7. The device according to claim 6, characterized in that The judging module comprises: an analyzing unit, configured to obtain the steering wheel angle signal by using the electronic steering assist system of the current vehicle, and determine the driving state of the current vehicle according to the steering wheel angle signal; A first determination unit, configured to determine that the current vehicle is in the straight-line driving state when the steering wheel angle signal is a preset threshold; The second determination unit is configured to determine that the current vehicle is in the non-straight driving state when the steering wheel angle signal is not the preset threshold.

8. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the tire wear alarm method based on the wheel speed signal as described in any one of claims 1 to 5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the tire wear warning method based on wheel speed signals as described in any one of claims 1 to 5.

10. A computer program product, comprising a computer program, characterized in that The computer program is executed to implement the tire wear warning method based on wheel speed signal as described in any one of claims 1-5.

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