Vehicle tire pressure prompting method, vehicle-mounted controller, system and automobile

Abstract

The invention discloses a vehicle tire pressure prompting method, a vehicle-mounted controller, a system and an automobile, and the vehicle tire pressure prompting method comprises the following steps: when a vehicle is in a current driving mode, obtaining actually measured tire pressure; when the current driving mode is a non-off-road mode, processing the actually measured tire pressure based on a first-level prompt strategy, determining a target tire pressure prompt, and controlling prompt equipment to output the target tire pressure prompt at a time; and when the current driving mode is an off-road mode, processing the actually measured tire pressure based on a multi-level prompting strategy, determining target tire pressure prompts corresponding to a plurality of tire pressure levels, and controlling the prompting equipment to sequentially output the target tire pressure prompts corresponding to the plurality of tire pressure levels. According to the scheme, single-time or graded tire pressure prompting and early warning can be carried out under different driving working conditions, and the vehicle using safety is improved.

Description

Technical Field

[0001] The present invention relates to the field of automotive electronics, and particularly to a vehicle tire pressure prompting method, an in-vehicle controller, a system and an automobile. Background Art

[0002] Tire pressure refers to the pressure of the air inside the tire. Tire pressure affects the performance of the vehicle. For example, tire pressure affects the load-bearing capacity and stability of the vehicle tires, affects the adhesion between the tires and the ground, thereby affecting driving stability, and affects vehicle fuel consumption, tire service life, etc.

[0003] When the vehicle is driving under different driving conditions, the required tire pressure of the tires is different. After the vehicle enters a special environment (such as a sandy environment), in order to achieve better tire grip, the driver usually actively reduces the tire pressure. At this time, the vehicle no longer gives a tire pressure prompt, and it is easy for sand to enter through the gap between the tire sidewall and the rim, resulting in tire air leakage, and further increasing the risk of tire de-beading and damage to the tire sidewall, affecting the safety of the driver. There are safety risks in using the vehicle, and there is an urgent need to provide a vehicle tire pressure prompting method to adapt to different scenarios and improve the safety of using the vehicle under low tire pressure driving conditions. Summary of the Invention

[0004] Embodiments of the present invention provide a vehicle tire pressure prompting method, an in-vehicle controller, a system and an automobile, so as to achieve tire pressure prompting based on different scenarios and different prompting strategies to ensure driving safety.

[0005] A vehicle tire pressure prompting method includes: Obtaining the measured tire pressure when the vehicle is in the current driving mode; When the current driving mode is a non-off-road mode, processing the measured tire pressure based on a first-level prompting strategy to determine a target tire pressure prompt, and controlling the prompting device to output the target tire pressure prompt once; When the current driving mode is an off-road mode, processing the measured tire pressure based on a multi-level prompting strategy to determine target tire pressure prompts corresponding to multiple tire pressure levels, and controlling the prompting device to sequentially output the target tire pressure prompts corresponding to the multiple tire pressure levels.

[0006] Preferably, processing the measured tire pressure based on the first-level prompting strategy to determine a target tire pressure prompt includes: If the measured tire pressure is less than the preset tire pressure threshold corresponding to the non-off-road mode, determining the preset tire pressure prompt corresponding to the non-off-road mode as the target tire pressure prompt.

[0007] Preferably, processing the measured tire pressure based on the first-level prompting strategy to determine a target tire pressure prompt includes: If the duration for which the measured tire pressure is less than the preset tire pressure threshold corresponding to the non-off-road mode is not less than the preset duration threshold, determine the preset tire pressure prompt corresponding to the non-off-road mode as the target tire pressure prompt.

[0008] Preferably, the processing of the measured tire pressure based on the multi-level prompt strategy to determine the target tire pressure prompts corresponding to multiple tire pressure levels includes: Based on the measured tire pressure and the first mapping relationship, determine the target tire pressure level corresponding to the measured tire pressure, where the first mapping relationship is used to reflect the mapping relationship between different preset tire pressure ranges and the corresponding tire pressure levels; Based on the target tire pressure level and the second mapping relationship, determine the target tire pressure prompt corresponding to the target tire pressure level, where the second mapping relationship is used to reflect the mapping relationship between different tire pressure levels and the corresponding tire pressure prompts.

[0009] Preferably, the processing of the measured tire pressure based on the multi-level prompt strategy to determine the target tire pressure prompts corresponding to multiple tire pressure levels includes: If the measured tire pressure is less than the first tire pressure threshold corresponding to the off-road mode and not less than the second tire pressure threshold corresponding to the off-road mode, determine the first tire pressure prompt corresponding to the first tire pressure level as the target tire pressure prompt; If the measured tire pressure is less than the second tire pressure threshold corresponding to the off-road mode, determine the second tire pressure prompt corresponding to the second tire pressure level as the target tire pressure prompt.

[0010] Preferably, the processing of the measured tire pressure based on the multi-level prompt strategy to determine the target tire pressure prompts corresponding to multiple tire pressure levels includes: If the duration for which the measured tire pressure is less than the first tire pressure threshold corresponding to the off-road mode and not less than the second tire pressure threshold corresponding to the off-road mode is not less than the first duration threshold, determine the first tire pressure prompt corresponding to the first tire pressure level as the target tire pressure prompt; If the duration for which the measured tire pressure is less than the second tire pressure threshold corresponding to the off-road mode is not less than the second duration threshold, determine the second tire pressure prompt corresponding to the second tire pressure level as the target tire pressure prompt.

[0011] Preferably, the vehicle tire pressure prompting method further includes: When the measured tire pressure meets the prompt stop condition, control the prompt device to stop outputting the target tire pressure prompt.

[0012] An in-vehicle controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above vehicle tire pressure prompting method is implemented.

[0013] A tire pressure monitoring system includes a vehicle-mounted controller and a wheel-end controller. Among them, the vehicle-mounted controller is connected to the wheel-end controller and is used to connect to the prompting device; The wheel-end controller is used to collect the measured tire pressure and send the measured tire pressure to the vehicle-mounted controller; The vehicle-mounted controller is used to receive the measured tire pressure, determine a target tire pressure prompt based on the measured tire pressure, and control the prompting device to output the target tire pressure prompt.

[0014] A vehicle includes the above tire pressure monitoring system.

[0015] For the above vehicle tire pressure prompting method, vehicle-mounted controller, system and vehicle, when the driving mode is a non-off-road mode, it is determined that the vehicle is in a non-low tire pressure driving condition, and the vehicle does not need to reduce the tire pressure to maintain performance. Based on a first-level prompting strategy, the measured tire pressure is processed to obtain a corresponding target tire pressure prompt, and the prompting device is controlled to output the target tire pressure prompt; when the driving mode is an off-road mode, it is determined that the vehicle is in a low tire pressure driving condition, and the vehicle needs to reduce the tire pressure to maintain vehicle performance and achieve better tire grip. Based on a multi-level prompting strategy, the measured tire pressure is processed to determine the target tire pressure prompt and control the prompting device to output the target tire pressure prompt. In this embodiment, different tire pressure prompting strategies have different tire pressure prompts, and different tire pressure prompting methods can be selected according to the size of the measured tire pressure in different driving modes, so as to perform tire pressure prompting and warning in different driving conditions in a hierarchical manner, improve the accuracy of tire pressure prompting, and improve the safety of vehicle use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic architecture diagram of a tire pressure monitoring system in an embodiment of the present invention; Figure 2 It is a flowchart of a vehicle tire pressure prompting method in an embodiment of the present invention; Figure 3 For Figure 2 the first flowchart of step S203 in Figure 4 For Figure 2 the second flowchart of step S203 in Figure 5 For Figure 2 the third flowchart of step S203 in Figure 6 This is a logic schematic diagram of a vehicle tire pressure prompt method in an embodiment of the present invention. Detailed implementation manners

[0018] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The vehicle tire pressure prompt method provided by the embodiment of the present invention can be applied to an in-vehicle controller. The in-vehicle controller is a controller installed on a vehicle, and specifically can be a controller dedicated to tire pressure prompt, or a controller integrated with tire pressure prompt and other functions.

[0020] As an example, when a tire pressure monitoring system (TPMS) is installed on a vehicle, the hardware architecture of the TPMS includes four wheel-end controllers (wheel-end controller 1, wheel-end controller 2, wheel-end controller 3, and wheel-end controller 4) and a TPMS receiving processor. Each wheel-end controller includes, but is not limited to, a battery, a single-chip microcomputer, a sensor, and a radio frequency transmitting component, and is used to collect the measured tire pressure and send the measured tire pressure to the TPMS receiving processor. The TPMS receiving processor includes a power supply, a radio frequency receiving component, and a single-chip microcomputer. The single-chip microcomputer here is an in-vehicle controller that executes the vehicle tire pressure prompt method, and is used to receive the measured tire pressure sent by the wheel-end controller, obtain the target tire pressure prompt according to the measured tire pressure, and send the target tire pressure prompt to the prompt device to control the prompt device to output the target tire pressure prompt. In this example, the prompt device can be at least one of an instrument, a lighting system, and a speaker provided on the vehicle.

[0021] In an embodiment, as Figure 2 shown, a vehicle tire pressure prompt method is provided. Taking the method applied to the TPMS receiving processor installed on the vehicle as an example, the method includes the following steps: S201: Obtain the measured tire pressure when the vehicle is in the current driving mode; S202: When the current driving mode is a non-off-road mode, process the measured tire pressure based on a first-level prompt strategy, determine the target tire pressure prompt, and control the prompt device to output the target tire pressure prompt once; S203: When the current driving mode is an off-road mode, process the measured tire pressure based on a multi-level prompt strategy, determine the target tire pressure prompts corresponding to multiple tire pressure levels, and control the prompt device to output the target tire pressure prompts corresponding to multiple tire pressure levels in sequence.

[0022] Among them, the current driving mode refers to the driving mode in which the vehicle is at the current moment; the driving mode includes an off-road mode and a non-off-road mode. Generally, when the vehicle is driving under low tire pressure conditions such as on sandy ground, the driver will control the vehicle to enter the off-road mode; when the vehicle is driving under non-low tire pressure conditions, the driver will control the vehicle to enter the non-off-road mode. In this embodiment, different driving modes are used to match different tire pressure prompting strategies for the vehicle. Optionally, the driving mode can be a preset mode. For example, the TPMS receiving processor can detect preset controls or buttons. If it detects that a preset control or button is triggered, the driving mode corresponding to the triggered control or button is used as the current driving mode.

[0023] Among them, the measured tire pressure is the pressure of the vehicle tire detected in real time.

[0024] Among them, the single-level prompting strategy and the multi-level prompting strategy are two preset strategies for determining tire pressure prompting. Among them, the single-level prompting strategy is a strategy for making a single prompt, while the multi-level prompting strategy is a strategy for making two or more prompts.

[0025] Among them, the target tire pressure prompt is used to control the vehicle prompt device to perform tire pressure prompting. It can be understood that it is the information required for the TPMS receiving processor to control the prompt device to perform vehicle tire pressure prompting considering the driving mode and the measured tire pressure. Optionally, the target tire pressure prompt can be one or several of a sound prompt, a text prompt, an icon prompt, and a light prompt. Specifically, it can control the instrument to output a text prompt and / or an icon prompt, control the speaker to output a sound prompt, and control the lighting system to emit lights of different colors.

[0026] As an example, in step S201, when the vehicle is in the current driving mode, the wheel-end controller collects the measured tire pressure in real time and sends the measured tire pressure to the TPMS receiving processor, so that the TPMS receiving processor receives the measured tire pressure sent by the wheel-end controller, and then calls the prompting strategy corresponding to the current driving mode to process the measured tire pressure to determine the corresponding target tire pressure prompt.

[0027] As an example, in step S202, when the current driving mode is a non-off-road mode, the TPMS receiving processor can determine that the vehicle is currently in a non-low-pressure driving condition, determine that the corresponding tire pressure prompt strategy is a first-level prompt strategy, evaluate the measured tire pressure based on the first-level prompt strategy, determine the corresponding target tire pressure prompt, and control the prompt device to output the target tire pressure prompt once. For example, the TPMS receiving processor can judge whether the measured tire pressure belongs to a preset tire pressure range based on the first-level prompt strategy. When the measured tire pressure belongs to the preset tire pressure range, obtain the tire pressure prompt corresponding to the first-level prompt strategy as the target tire pressure prompt, and control the prompt device to output the target tire pressure prompt once. In this example, when the vehicle is in a non-off-road mode, it is considered that the vehicle is in a non-low-pressure driving condition, that is, there is no situation where the driver actively reduces the tire pressure. At this time, based on the first-level prompt strategy, it is determined that the measured tire pressure meets the corresponding prompt trigger condition, and the corresponding target tire pressure prompt can be determined, and the prompt device is controlled to output the target tire pressure prompt once, which can not only achieve the warning prompt effect but also avoid the multiple prompts from affecting the driver's normal driving and driving experience.

[0028] As an example, in step S203, when the current driving mode is an off-road mode, the TPMS receiving processor can determine that the vehicle is in a low-pressure driving condition, determine that the corresponding tire pressure prompt strategy is a multi-level prompt strategy, then evaluate the measured tire pressure based on the multi-level prompt strategy, determine the target tire pressure prompts corresponding to multiple tire pressure levels, and control the prompt device to sequentially output the target tire pressure prompts corresponding to multiple tire pressure levels. For example, the TPMS receiving processor can judge the tire pressure range to which the measured tire pressure belongs based on the multi-level prompt strategy. In the multi-level prompt strategy, different tire pressure ranges correspond to different tire pressure levels, and each tire pressure level corresponds to a tire pressure prompt. Thus, the TPMS receiving processor obtains the tire pressure prompt corresponding to the tire pressure range to which the measured tire pressure belongs as the target tire pressure prompt, and controls the prompt device to output the target tire pressure prompt multiple times. In this example, when the vehicle is in an off-road mode, it is considered that the vehicle is in a low-pressure driving condition, and there is a situation where the driver actively reduces the tire pressure. At this time, when it is determined that the measured tire pressure meets the prompt trigger conditions corresponding to different tire pressure levels based on the multi-level prompt strategy, the target tire pressure prompts corresponding to different tire pressure levels can be determined, and the prompt device is controlled to sequentially output the target tire pressure prompts corresponding to different tire pressure levels, so as to prevent the driver from ignoring the tire pressure change during the process of actively reducing the tire pressure, resulting in problems such as tire air leakage caused by sand entering the gap between the tire sidewall and the rim when the tire pressure is too low, thereby ensuring driving safety.

[0029] In this embodiment, when the driving mode is a non-off-road mode, the TPMS receiving processor determines that the vehicle is in a non-low tire pressure driving condition. The vehicle does not need to reduce the tire pressure to maintain performance. Based on the primary prompt strategy, the measured tire pressure is processed to obtain the corresponding target tire pressure prompt, and the prompt device is controlled to output the target tire pressure prompt. When the driving mode is an off-road mode, the TPMS receiving processor determines that the vehicle is in a low tire pressure driving condition. The vehicle needs to reduce the tire pressure to maintain vehicle performance and achieve better tire grip. Based on the multi-level prompt strategy, the measured tire pressure is processed to determine the target tire pressure prompt and control the prompt device to output the target tire pressure prompt. In this embodiment, different tire pressure prompts have different tire pressure prompts in the strategy, which can implement different tire pressure prompt methods according to the size of the measured tire pressure in different driving modes, so as to perform tire pressure prompt warnings in different driving conditions in a hierarchical manner. This embodiment can improve the accuracy of tire pressure prompts and the safety of vehicle use.

[0030] In one embodiment, step S202, that is, processing the measured tire pressure based on the primary prompt strategy to determine the target tire pressure prompt, includes: If the measured tire pressure is less than the preset tire pressure threshold corresponding to the non-off-road mode, then the preset tire pressure prompt corresponding to the non-off-road mode is determined as the target tire pressure prompt.

[0031] Among them, the preset tire pressure threshold corresponding to the non-off-road mode is a threshold set in advance for evaluating whether the measured tire pressure in the non-off-road mode reaches a smaller standard. This preset tire pressure threshold can be understood as the minimum value for maintaining the normal driving of the vehicle in a non-low tire pressure driving condition in the non-off-road mode. Optionally, the preset tire pressure threshold is the primary prompt threshold of the non-off-road mode, which can be 75% of the normal tire pressure design value.

[0032] As an example, when the current driving mode is in the non-off-road mode, the measured tire pressure is compared with the preset tire pressure threshold corresponding to the non-off-road mode. If the measured tire pressure is less than the preset tire pressure threshold corresponding to the non-off-road mode, it is determined that the measured tire pressure is low, the vehicle tire is currently in a low tire pressure state, there is a risk of air leakage, and moreover, it is likely to have an adverse impact on vehicle performance and affect the safety of vehicle use. Therefore, it is necessary to determine the preset tire pressure prompt of the non-off-road mode as the target tire pressure prompt, and control the prompt device to output the target tire pressure prompt once to achieve the warning prompt effect.

[0033] In this embodiment, the TPMS receiving processor uses the preset tire pressure threshold corresponding to the non-off-road mode to judge the measured tire pressure in the non-off-road mode. When the measured tire pressure is less than the preset tire pressure threshold corresponding to the non-off-road mode, it is determined that the preset tire pressure prompt corresponding to the non-off-road mode is the target tire pressure prompt, which can improve the efficiency of tire pressure prompts and the safety of vehicle use for drivers.

[0034] For example, the preset tire pressure prompt in the non - off - road mode can be a short voice prompt or a text prompt, such as "Low tire pressure, please stop and check". Another example is that the preset tire pressure prompt in the non - off - road mode can be a continuous voice prompt, text prompt, and light prompt. In other embodiments, the preset tire pressure prompt can also be other text prompts, sound prompts, light prompts, or a combination of text prompts, sound prompts, and light prompts, which are not limited in this embodiment.

[0035] In one embodiment, step S202, that is, processing the measured tire pressure based on the primary prompt strategy to determine the target tire pressure prompt, includes: If the duration for which the measured tire pressure is less than the preset tire pressure threshold corresponding to the non - off - road mode is not less than the preset duration threshold, then determine the preset tire pressure prompt corresponding to the non - off - road mode as the target tire pressure prompt.

[0036] Among them, the preset duration threshold is a preset time value. By setting the duration threshold, the TPMS receiving processor can avoid determining a short - term abnormal tire pressure value as a long - term tire pressure trend and avoid misjudgment caused by instantaneous tire pressure changes.

[0037] As an example, the TPMS receiving processor can obtain the duration for which the measured tire pressure is less than the preset tire pressure threshold corresponding to the non - off - road mode. If the duration is less than the preset duration threshold, it indicates that there may be data errors currently, and the situation where the measured tire pressure is less than the preset tire pressure threshold has a certain degree of occasionality; if the duration for which the measured tire pressure is less than the preset tire pressure threshold is not less than the preset duration threshold, it indicates that the change trend of the measured tire pressure is continuous and stable, indicating that the vehicle tire has been in a low - tire - pressure state for a long time, there is a risk of air leakage, and it affects the vehicle use safety. Therefore, it is necessary to determine the preset tire pressure prompt of the non - off - road mode as the target tire pressure prompt and control the prompt device to output the target tire pressure prompt once to achieve the warning prompt effect.

[0038] For example, the preset tire pressure prompt in the non - off - road mode can be a short voice prompt or a text prompt, such as "Low tire pressure, please stop and check". Another example is that the preset tire pressure prompt in the non - off - road mode can be a continuous voice prompt, text prompt, and light prompt. In other embodiments, the preset tire pressure prompt can be other text prompts, sound prompts, light prompts, or a combination of text prompts, sound prompts, and light prompts, which are not limited in this embodiment.

[0039] In one embodiment, as Figure 3 shown, step S203, that is, processing the measured tire pressure based on the multi - level prompt strategy to determine the target tire pressure prompts corresponding to multiple tire pressure levels, includes: S301: Based on the measured tire pressure and the first mapping relationship, determine the target tire pressure level corresponding to the measured tire pressure. The first mapping relationship is used to reflect the mapping relationship between different preset tire pressure ranges and the corresponding tire pressure levels. S302: Based on the target tire pressure level and the second mapping relationship, determine the target tire pressure prompt corresponding to the target tire pressure level. The second mapping relationship is used to reflect the mapping relationship between different tire pressure levels and the corresponding tire pressure prompts.

[0040] Among them, the first mapping relationship includes multiple preset tire pressure ranges and the tire pressure levels corresponding to each preset tire pressure range. Optionally, the higher the tire pressure level, the lower the tire pressure of the vehicle, and the more urgent the corresponding tire pressure prompt. Among them, the second mapping relationship includes multiple tire pressure levels and the tire pressure prompts corresponding to each tire pressure level.

[0041] As an example, the TPMS receiving processor can search for the first mapping relationship based on the measured tire pressure, determine the tire pressure range to which the measured tire pressure belongs as the target tire pressure range, and then determine the tire pressure level corresponding to the target tire pressure range as the target tire pressure level. Then, the TPMS receiving processor can search for the second mapping relationship based on the target tire pressure level and determine the tire pressure prompt corresponding to the target tire pressure level as the target tire pressure prompt.

[0042] In this embodiment, based on the measured tire pressure and the first mapping relationship, the target tire pressure level corresponding to the measured tire pressure is determined. Based on the target tire pressure level and the second mapping relationship, the target tire pressure prompt corresponding to the target tire pressure level is determined. It can realize, under the off-road mode, according to different measured tire pressures, determine different target tire pressure prompts corresponding to different tire pressure levels, improve the accuracy of tire pressure prompts, realize multi-level prompts for tire pressure monitoring, without increasing hardware costs, and improve the safety of users when driving with low tire pressure.

[0043] In one embodiment, as Figure 4 shown, step S203, that is, processing the measured tire pressure based on the multi-level prompt strategy to determine the target tire pressure prompts corresponding to multiple tire pressure levels, includes: S401: If the measured tire pressure is less than the first tire pressure threshold corresponding to the off-road mode and not less than the second tire pressure threshold corresponding to the off-road mode, determine the first tire pressure prompt corresponding to the first tire pressure level as the target tire pressure prompt.

[0044] S402: If the measured tire pressure is less than the second tire pressure threshold corresponding to the off-road mode, determine the second tire pressure prompt corresponding to the second tire pressure level as the target tire pressure prompt.

[0045] This embodiment is described by taking the multi-level prompt strategy including the two-level tire pressure prompt as an example. Among them, the first tire pressure threshold corresponding to the off-road mode is greater than the second tire pressure threshold. The first tire pressure threshold is the first-level prompt threshold of the off-road mode, and the second tire pressure threshold is the second-level prompt threshold in the off-road mode. Both the first tire pressure threshold and the second tire pressure threshold are preset tire pressure values, and the first tire pressure threshold is greater than the second tire pressure threshold. As an example, the first tire pressure threshold can be understood as the lower value that maintains the normal driving of the vehicle under the low tire pressure driving condition in the off-road mode, and the second tire pressure threshold can be understood as the lowest value that maintains the normal driving of the vehicle under the low tire pressure driving condition in the off-road mode.

[0046] In this example, the first tire pressure threshold corresponding to the off-road mode is the same as the preset tire pressure threshold corresponding to the non-off-road mode. In other embodiments, the first tire pressure threshold corresponding to the off-road mode is different from the preset tire pressure threshold corresponding to the non-off-road mode, and this embodiment does not limit this.

[0047] As an example, the TPMS receiving processor can compare the obtained measured tire pressure with the first tire pressure threshold and the second tire pressure threshold; if the measured tire pressure is less than the first tire pressure threshold and not less than the second tire pressure threshold, it is determined that it falls within the tire pressure range corresponding to the first tire pressure level, and its tire pressure level is determined to be the first tire pressure level, and the first tire pressure prompt corresponding to the first tire pressure level is determined as the target tire pressure prompt; if the measured tire pressure is less than the second tire pressure threshold, it is determined that it falls within the tire pressure range corresponding to the second tire pressure level, and its tire pressure level is determined to be the second tire pressure level, and the second tire pressure prompt corresponding to the second tire pressure level is determined as the target tire pressure prompt.

[0048] For example, the first tire pressure prompt corresponding to the first tire pressure level can be a short voice prompt or a text prompt, such as "The current vehicle is in off-road mode, please drive carefully". For another example, the first tire pressure prompt corresponding to the first tire pressure level can be a continuous voice prompt, text prompt and light prompt. In other embodiments, the first tire pressure prompt corresponding to the first tire pressure level can be other text prompts, sound prompts, light prompts, or a combination of text prompts, sound prompts and light prompts, and this embodiment does not limit this.

[0049] For example, the second tire pressure prompt corresponding to the second tire pressure level can be a continuous voice prompt or a text prompt, such as "Tire pressure is low, please stop and check". For another example, the second tire pressure prompt corresponding to the second tire pressure level can be a continuous voice prompt, text prompt and light prompt. In other embodiments, the second tire pressure prompt corresponding to the second tire pressure level can be other text prompts, sound prompts, light prompts, or a combination of text prompts, sound prompts and light prompts, and this embodiment does not limit this.

[0050] In this embodiment, the measured tire pressure is compared with the first tire pressure threshold and the second tire pressure threshold corresponding to the off-road mode to determine the tire pressure state of the vehicle tires in the off-road mode. If the measured tire pressure is less than the first tire pressure threshold and not less than the second tire pressure threshold, it is determined that the current measured tire pressure is at a lower tire pressure level (i.e., the first tire pressure level) in the off-road mode, and the first tire pressure prompt corresponding to the first tire pressure level is determined as the target tire pressure prompt for the first-level tire pressure prompt in the off-road mode. If the measured tire pressure is less than the second tire pressure threshold, it is determined that the current measured tire pressure is at the lowest tire pressure level (i.e., the second tire pressure level) in the off-road mode, and the second tire pressure prompt corresponding to the second tire pressure level is determined as the target tire pressure prompt for the second-level tire pressure prompt in the off-road mode. This embodiment can achieve a two-level prompt for tire pressure monitoring without increasing the hardware cost, improve the accuracy of the tire pressure prompt, and enhance the safety of users when driving with low tire pressure.

[0051] In one embodiment, as Figure 5 shown, step S203, that is, processing the measured tire pressure based on a multi-level prompt strategy to determine the target tire pressure prompts corresponding to multiple tire pressure levels, includes: S501: If the duration for which the measured tire pressure is less than the first tire pressure threshold corresponding to the off-road mode and not less than the second tire pressure threshold corresponding to the off-road mode is not less than the first duration threshold, then determine the first tire pressure prompt corresponding to the first tire pressure level as the target tire pressure prompt; S502: If the duration for which the measured tire pressure is less than the second tire pressure threshold corresponding to the off-road mode is not less than the second duration threshold, determine the second tire pressure prompt corresponding to the second tire pressure level as the target tire pressure prompt.

[0052] As an example, the TPMS receiving processor can obtain the duration for which the measured tire pressure is less than the first tire pressure threshold and not less than the second tire pressure threshold. If the duration is less than the first duration threshold, it indicates that the situation where the measured tire pressure is between the second tire pressure threshold and the first tire pressure threshold is somewhat sporadic and not sufficient to determine that it meets the prompt trigger condition corresponding to the first tire pressure level; if the duration is not less than the first duration threshold, it indicates that the change trend of the measured tire pressure is continuous and stable, and it meets the prompt trigger condition corresponding to the first tire pressure level for a long time. Therefore, it is necessary to determine the first tire pressure prompt corresponding to the first tire pressure level as the target tire pressure prompt and control the prompt device to output the target tire pressure prompt once to achieve the warning prompt effect.

[0053] Similarly, the TPMS receiving processor can also obtain the duration during which the measured tire pressure is less than the second tire pressure threshold corresponding to the off-road mode. If the duration is less than the second duration threshold, it indicates that the situation where the measured tire pressure is less than the second duration threshold is somewhat sporadic and is not sufficient to determine that it meets the prompt trigger condition corresponding to the second tire pressure level. If the duration is not less than the second duration threshold, it indicates that the change trend of the measured tire pressure is continuous and stable, and it meets the prompt trigger condition corresponding to the second tire pressure level for a long time. Therefore, it is necessary to determine the second tire pressure prompt corresponding to the second tire pressure level as the target tire pressure prompt, and control the prompt device to output the target tire pressure prompt once to achieve the warning prompt effect.

[0054] In one embodiment, the vehicle tire pressure prompting method further includes: When the measured tire pressure meets the prompt stop condition, control the prompt device to stop outputting the target tire pressure prompt.

[0055] Among them, the prompt stop condition is a pre-set condition used to evaluate whether it is necessary to stop the prompt. As an example, the prompt stop condition can be matched with the prompt trigger condition used to determine whether to give a prompt, or can be related to a pre-set preset prompt duration.

[0056] As an example, when the current driving mode is a non-off-road mode, the measured tire pressure is processed based on the first-level prompt strategy. If the measured tire pressure is not less than the preset tire pressure threshold corresponding to the non-off-road mode, it is determined that the measured tire pressure meets the prompt stop condition, and the prompt device is controlled to stop outputting the target tire pressure prompt. That is to say, when the measured tire pressure is not less than the preset tire pressure threshold corresponding to the non-off-road mode, the TPMS receiving processor determines that the tire pressure of the vehicle has been within the tire pressure range that maintains the normal driving of the vehicle under non-low tire pressure driving conditions. To avoid the target tire pressure prompt affecting the driver's judgment, the prompt device can be controlled to stop outputting the target tire pressure prompt to improve the safety of vehicle driving.

[0057] As an example, when the current driving mode is an off-road mode, the measured tire pressure is processed based on the multi-level prompt strategy. If the measured tire pressure is not less than the first tire pressure threshold corresponding to the off-road mode, it is determined that the measured tire pressure meets the prompt stop condition, and the TPMS receiving processor determines that the tire pressure of the vehicle has been within the tire pressure range that maintains the normal driving of the vehicle under low tire pressure driving conditions. To avoid the target tire pressure prompt affecting the driver's judgment, the prompt device can be controlled to stop outputting the target tire pressure prompt to improve the safety of vehicle driving.

[0058] As an example, the target tire pressure prompt has a certain preset prompt duration. The TPMS receiving processor can start timing when controlling the prompt device to start outputting the target tire pressure prompt. When the timing time is greater than or equal to the preset prompt duration, it is determined that the measured tire pressure meets the prompt stop condition, and the TPMS receiving processor controls the prompt device to stop outputting the target tire pressure prompt.

[0059] In one embodiment, as Figure 6 shown, taking the multi-level prompt strategy including the secondary tire pressure prompt as an example for illustration. When the vehicle is in the current driving mode, the TPMS receiving processor obtains the measured tire pressure. When the current driving mode is a non-off-road mode, the measured tire pressure is processed based on the primary prompt strategy, and the measured tire pressure is compared with the preset tire pressure threshold corresponding to the non-off-road mode (i.e., the primary TPMS); if the measured tire pressure is less than the preset tire pressure threshold, the preset tire pressure prompt for the non-off-road mode is determined as the target tire pressure prompt, and the prompt device is controlled to output the target tire pressure prompt; if the measured tire pressure is not less than the preset tire pressure threshold, it is determined that the measured tire pressure meets the prompt stop condition, and the prompt device is controlled to stop outputting the target tire pressure prompt. When the current driving mode is an off-road mode, the TPMS receiving processor processes the measured tire pressure based on the multi-level prompt strategy, and the measured tire pressure is compared with the first tire pressure threshold (i.e., the primary TPMS) and the second tire pressure threshold (secondary TPMS) corresponding to the off-road mode; if the measured tire pressure is less than the first tire pressure threshold and the measured tire pressure is not less than the second tire pressure threshold, the first tire pressure prompt corresponding to the first tire pressure level is determined as the target tire pressure prompt; if the measured tire pressure is less than the second tire pressure threshold, the second tire pressure prompt corresponding to the second tire pressure level is determined as the target tire pressure prompt, and the prompt device is controlled to output the target tire pressure prompt; if the measured tire pressure is not less than the first tire pressure threshold, it is determined that the measured tire pressure meets the prompt stop condition, and the prompt device is controlled to stop outputting the target tire pressure prompt. This embodiment can implement the secondary prompt of tire pressure monitoring without increasing the hardware cost, can improve the accuracy of tire pressure prompt, and improve the safety of users when driving with low tire pressure.

[0060] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution is prior or posterior. The execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0061] In one embodiment, as Figure 6 shown, a vehicle-mounted controller is provided, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the vehicle tire pressure prompt method in the above embodiment is implemented, for example Figures 2 to 5 as shown in, to avoid repetition, it will not be elaborated here.

[0062] In one embodiment, a computer-readable storage medium is provided. A computer program is stored on the computer-readable storage medium. When the computer program is executed by the processor, the vehicle tire pressure prompt method in the above embodiment is implemented, for example Figures 2 to 5 as shown in, to avoid repetition, it will not be elaborated here.

[0063] In one embodiment, a tire pressure monitoring system is provided, asFigure 1 As shown, it includes a vehicle-mounted controller and a wheel-end controller. The vehicle-mounted controller is connected to the wheel-end controller and is used to connect to a prompting device; The wheel-end controller is used to collect the measured tire pressure and send the measured tire pressure to the vehicle-mounted controller; The vehicle-mounted controller is used to receive the measured tire pressure, determine a target tire pressure prompt based on the measured tire pressure, and control the prompting device to output the target tire pressure prompt. The vehicle-mounted controller is used to execute the vehicle tire pressure prompting method in the above-mentioned embodiments. For example, Figures 2 to 5 as shown in [reference], to avoid repetition, it will not be elaborated here.

[0064] In one embodiment, an automobile is provided, which includes the tire pressure monitoring system in the above-mentioned embodiment and can implement the vehicle tire pressure prompting method in the above-mentioned embodiment. For example, Figures 2 to 5 as shown in [reference], to avoid repetition, it will not be elaborated here.

[0065] The above-mentioned embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention and should all be included in the protection scope of the present invention.

Claims

1. A vehicle tire pressure prompt method, characterized in that: include: When the vehicle is in the current driving mode, obtain the measured tire pressure; When the current driving mode is a non-off-road mode, the measured tire pressure is processed based on a first-level prompt strategy to determine a target tire pressure prompt, and a prompt device is controlled to output the target tire pressure prompt once; When the current driving mode is the off-road mode, the measured tire pressure is processed based on a multi-level prompt strategy, target tire pressure prompts corresponding to multiple tire pressure levels are determined, and the prompt device is controlled to sequentially output target tire pressure prompts corresponding to the multiple tire pressure levels.

2. The vehicle tire pressure prompting method according to claim 1, characterized in that: The step of processing the measured tire pressure based on the first-level prompt strategy to determine a target tire pressure prompt includes: If the measured tire pressure is less than the preset tire pressure threshold corresponding to the non-off-road mode, the preset tire pressure prompt corresponding to the non-off-road mode is determined as the target tire pressure prompt.

3. The vehicle tire pressure prompting method according to claim 2, characterized in that: The step of processing the measured tire pressure based on the first-level prompt strategy to determine a target tire pressure prompt includes: If the duration for which the measured tire pressure is less than the preset tire pressure threshold corresponding to the non-off-road mode is not less than the preset duration threshold, the preset tire pressure prompt corresponding to the non-off-road mode is determined as the target tire pressure prompt.

4. The vehicle tire pressure prompting method according to claim 1, characterized in that: The step of processing the measured tire pressure based on the multi-level prompt strategy to determine target tire pressure prompts corresponding to multiple tire pressure levels includes: Determining a target tire pressure level corresponding to the measured tire pressure based on the measured tire pressure and a first mapping relationship, wherein the first mapping relationship is used to reflect a mapping relationship between different preset tire pressure ranges and corresponding tire pressure levels; A target tire pressure prompt corresponding to the target tire pressure level is determined based on the target tire pressure level and a second mapping relationship, wherein the second mapping relationship is used to reflect a mapping relationship between different tire pressure levels and corresponding tire pressure prompts.

5. The vehicle tire pressure prompting method according to any one of claims 1 to 4, characterized in that: The step of processing the measured tire pressure based on the multi-level prompt strategy to determine target tire pressure prompts corresponding to multiple tire pressure levels includes: If the measured tire pressure is less than the first tire pressure threshold corresponding to the off-road mode and not less than the second tire pressure threshold corresponding to the off-road mode, determining the first tire pressure prompt corresponding to the first tire pressure level as the target tire pressure prompt; If the measured tire pressure is less than a second tire pressure threshold corresponding to the off-road mode, a second tire pressure prompt corresponding to the second tire pressure level is determined as the target tire pressure prompt.

6. The vehicle tire pressure prompting method according to claim 5, characterized in that: The step of processing the measured tire pressure based on the multi-level prompt strategy to determine target tire pressure prompts corresponding to multiple tire pressure levels includes: If the measured tire pressure is less than the first tire pressure threshold corresponding to the off-road mode and is not less than the second tire pressure threshold corresponding to the off-road mode for a duration not less than the first duration threshold, determining the first tire pressure prompt corresponding to the first tire pressure level as the target tire pressure prompt; If the duration for which the measured tire pressure is less than the second tire pressure threshold corresponding to the off-road mode is not less than a second duration threshold, the second tire pressure prompt corresponding to the second tire pressure level is determined as the target tire pressure prompt.

7. The vehicle tire pressure prompting method according to claim 1, characterized in that: The vehicle tire pressure prompting method further includes: When the measured tire pressure meets the prompt stop condition, the prompt device is controlled to stop outputting the target tire pressure prompt.

8. A vehicle-mounted controller, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the vehicle tire pressure prompt method according to any one of claims 1 to 7 is implemented.

9. A tire pressure monitoring system, characterized in that: The vehicle-mounted controller and the wheel-end controller according to claim 8 are included, wherein the vehicle-mounted controller is connected to the wheel-end controller and is used to connect to the prompt device; The wheel-end controller is used to collect the measured tire pressure and send the measured tire pressure to the vehicle-mounted controller; The vehicle-mounted controller is used to receive the measured tire pressure, determine a target tire pressure prompt based on the measured tire pressure, and control a prompt device to output the target tire pressure prompt.

10. An automobile, characterized in that: Comprising the tire pressure monitoring system as claimed in claim 9.

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