Tire monitoring method, device and system, vehicle and storage medium

Abstract

The invention relates to a tire monitoring method, device and system, a vehicle and a storage medium. The tire monitoring method comprises the steps that current tire information collected by a tire monitoring unit is obtained; target working parameters of the tire monitoring unit are determined according to vehicle information and the current tire information, and the vehicle information comprises one or more of vehicle driving state information, environment sensing information and driving setting information; and controlling the tire monitoring unit to monitor a corresponding tire according to the target working parameter. The power consumption of the tire monitoring unit can be adaptively adjusted based on the vehicle driving scene, the damage to the power supply battery of the tire pressure detection system is reduced, and the service life of the battery is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of tire monitoring, and in particular to a tire monitoring method, device, system, vehicle and storage medium. Background Art

[0002] The Tire Pressure Monitoring System (TPMS) is a system that monitors the tire pressure of a vehicle and gives an alarm or prompt when the tire pressure is abnormal. It can improve the driving safety of the vehicle and has been widely used in various models in recent years.

[0003] In the related technology, the tire pressure detection system includes sensors and monitoring control modules. The sensors include acceleration sensors, pressure sensors, and temperature sensors. The sensors are installed on each tire, and the monitoring control module is connected to each sensor. The sensor is used to monitor the relevant information of the tire. The monitoring control module is used to calculate the pressure of each tire based on the relevant information. When the tire pressure is greater than a certain value, the tire pressure monitoring system sends abnormal information to the vehicle central control, and the vehicle central control outputs the corresponding tire pressure abnormal information. Among them, when the tire pressure detection system starts working, the sensor samples according to the sampling frequency set by the factory, and sends the adopted relevant information to the monitoring control module according to the set transmission frequency.

[0004] However, this working mode will cause the tire pressure detection system to consume high power, cause great damage to the battery, and shorten the battery life. Summary of the invention

[0005] One of the purposes of the present invention is to provide a tire monitoring method to solve the problem that the tire pressure detection system in the prior art has high power consumption, great damage to the battery, and shortened battery life; the second purpose is to provide a tire monitoring device; the third purpose is to provide a tire monitoring system; and the fourth purpose is to provide a vehicle.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, a tire monitoring method is applied to a vehicle, the method comprising:

[0008] Obtain current tire information collected by the tire monitoring unit;

[0009] determining a target operating parameter of the tire monitoring unit according to vehicle information and the current tire information, wherein the vehicle information includes one or more of vehicle driving state information, environment perception information, and driving setting information;

[0010] Control the tire monitoring unit to monitor the corresponding tire according to the target working parameter

[0011] According to the above-mentioned technical means, since the tire monitoring unit can actively control its working parameters through the vehicle side, the vehicle side determines the tire monitoring unit's lower power consumption and more adaptable working mode under the current driving scenario based on one or more vehicle information, such as vehicle driving status information, environmental perception information and driving setting information, and controls the tire monitoring unit to adjust its working parameters. Therefore, the tire pressure detection system can adaptively adjust the power consumption based on the scene, adaptively reduce the damage to the power supply battery of the tire pressure detection system, and extend the battery life.

[0012] Further, determining the target operating parameters of the tire monitoring unit according to the vehicle information and the current tire information includes:

[0013] Determine the current driving condition of the vehicle according to the vehicle information;

[0014] According to the current driving road condition and the current tire information, a target operating parameter of the tire monitoring unit is determined.

[0015] According to the above technical means, the vehicle information is obtained by the vehicle side through the bus, and the current driving condition of the vehicle is predicted based on the vehicle information with higher accuracy, thereby achieving better control effect on the tire monitoring unit.

[0016] Further, determining the target operating parameters of the tire monitoring unit according to the current driving road condition and the current tire information includes:

[0017] Determining a target sampling frequency of the tire monitoring unit according to the current driving road condition and the current tire information;

[0018] According to the signal reception strength of the current tire information, the target signal transmission power and / or target signal transmission frequency of the tire monitoring unit is determined; the target operating parameters include target sampling frequency, target signal transmission power and / or signal transmission frequency.

[0019] According to the above technical means, the working parameters of the tire monitoring unit are adjusted based on a combination of multiple information, and the sampling frequency and signal sending power / signal sending frequency of the tire monitoring unit are adjusted to enrich the working mode of the tire monitoring unit. Based on fine-grained adjustments, the tire monitoring unit works in a better state, with lower power consumption and longer battery life.

[0020] Further, the vehicle information includes vehicle driving state information, and the vehicle driving state information includes one or more of wheel height, wheel acceleration and vehicle speed. The determining the current driving condition of the vehicle according to the vehicle information includes:

[0021] When the change in wheel height within a preset time period is greater than or equal to a first preset threshold, it is determined that the current driving road condition of the vehicle is a first road condition; when the change in wheel height is less than the first preset threshold, it is determined that the current driving road condition of the vehicle is a second road condition, wherein the target operating parameter of the tire monitoring unit corresponding to the first road condition is greater than the target operating parameter of the tire monitoring unit corresponding to the second road condition;

[0022] Or, when it is determined based on all the wheel accelerations that the acceleration difference is greater than or equal to the second preset threshold, it is determined that the current driving road condition of the vehicle is the third road condition, and when the acceleration difference is less than the second preset threshold, it is determined that the current driving road condition of the vehicle is the fourth road condition, wherein the target operating parameter of the tire monitoring unit corresponding to the third road condition is greater than the target operating parameter of the tire monitoring unit corresponding to the fourth road condition;

[0023] Alternatively, when the vehicle speed is greater than or equal to a third preset threshold, the vehicle's current driving road condition is determined to be the fifth road condition, and when the vehicle speed is less than the third preset threshold, the vehicle's current driving road condition is determined to be the sixth road condition, wherein the target operating parameters of the tire monitoring unit corresponding to the fifth road condition are greater than the target operating parameters of the tire monitoring unit corresponding to the sixth road condition.

[0024] According to the above-mentioned technical means, since the wheel height change, wheel acceleration difference and vehicle speed can better reflect the current state of the vehicle, the current driving road condition can be predicted with higher accuracy through this information, and the state of the wheel is positively correlated with this information. This information can correctly reflect the monitoring needs of the wheel state, and then the working parameters of the tire monitoring unit can be adjusted normally, so that the working state of the tire monitoring unit can be adaptively adjusted according to the actual driving road conditions to reduce power consumption.

[0025] Further, determining the current driving condition of the vehicle according to the vehicle information includes:

[0026] predicting the vehicle state according to the vehicle driving state information,

[0027] determining a road surface state according to the environmental perception information;

[0028] determining a vehicle driving mode based on the driving setting information;

[0029] Determining a current driving state of the vehicle according to the vehicle state, the road state and the vehicle driving model;

[0030] Among them, the vehicle state includes a normal movement state and an abnormal movement state, the abnormal movement state includes one or more of slipping, large wheel hop fluctuations and abnormally high speed, the road surface state includes bumpy road surface and flat road surface, and the vehicle driving model includes one or more of off-road mode, sports mode, standard mode and maintenance mode.

[0031] According to the above technical means, various types of information are combined to analyze the current driving conditions of the vehicle, improve the prediction of road conditions, and then improve the accuracy of controlling the working mode of the tire monitoring unit, thereby improving the driving safety performance of the vehicle.

[0032] Further, determining the current driving state of the vehicle according to the vehicle state, the road state and the vehicle driving model includes:

[0033] Obtaining vehicle driving status information weights, environment perception information weights, and driving setting information weights;

[0034] The current driving condition of the vehicle is determined based on the weights of the vehicle state and the vehicle driving state information, the weights of the road state and the environmental perception information, and the weights of the vehicle driving mode and the driving setting information, wherein different vehicles have different weights for each type of information.

[0035] According to the above technical means, since each type of information is calibrated with a corresponding weight, when analyzing the current driving condition of the vehicle, the analysis result corresponding to the information with a large weight is more inclined. According to the needs of different vehicles, different weights are calibrated for various information, so that this solution can adapt to the needs of different vehicles, increase universality, and improve the accuracy of judging the current driving condition of the vehicle.

[0036] Further, the controlling the tire monitoring unit to monitor the corresponding tire according to the target working parameter includes:

[0037] determining whether the target operating parameter matches a current operating parameter of the tire monitoring unit;

[0038] If not, initiating a two-way communication request to the tire monitoring unit;

[0039] When receiving the acknowledgement information fed back by the tire monitoring unit, two-way communication is established;

[0040] The target operating parameter is sent to a tire monitoring unit based on the two-way communication to control the tire monitoring unit to monitor the corresponding tire according to the target operating parameter.

[0041] According to the above technical means, the data transmission between the vehicle end and the tire monitoring unit is reduced, and the power consumption of the tire monitoring unit is reduced.

[0042] Further, after sending the target operating parameter to the tire monitoring unit based on the two-way communication to control the tire monitoring unit to monitor the corresponding tire according to the target operating parameter, the method further includes:

[0043] When the working parameter update completion information fed back by the tire monitoring unit is received, the two-way communication is disconnected.

[0044] According to the above technical means, the two-way communication is closed in time to reduce the power consumption of the second communication module of the tire monitoring unit.

[0045] In a second aspect, a tire monitoring method is applied to a tire monitoring unit, the method comprising:

[0046] Collecting current tire information of the tire according to current working parameters, and broadcasting the current tire information;

[0047] Establish two-way communication with the vehicle end;

[0048] Receive the target operating parameter sent by the vehicle end, and update the current operating parameter based on the target operating parameter, wherein the target operating parameter is determined by the vehicle end based on the current tire information.

[0049] According to the above technical means, the tire monitoring unit responds to the control of the vehicle side, and the vehicle side actively controls the tire monitoring unit according to the vehicle information and the current tire information, so that the tire monitoring unit can operate with more matching working parameters, reduce power consumption and extend battery life.

[0050] Further, the receiving the target operating parameter sent by the vehicle end and updating the current operating parameter based on the target operating parameter includes:

[0051] When receiving the target operating parameter sent by the vehicle end, determining whether to perform the operating parameter change operation according to the current state of the tire monitoring unit and the target operating parameter;

[0052] If so, the current operating parameters are updated based on the target operating parameters, and the operating parameter update completion information is fed back to the vehicle end.

[0053] According to the above technical means, after the tire monitoring unit receives the target operating parameters, it further comprehensively determines whether to adjust its operating parameters based on the target operating parameters and the current state of the tire monitoring unit to avoid the adjusted operating parameters causing higher power consumption of the tire monitoring unit or causing damage to the tire monitoring unit.

[0054] Further, the tire monitoring unit includes a wireless communication unit, and the method further includes:

[0055] When establishing two-way communication with the vehicle end, controlling the second communication module to switch from a broadcastable state to a connection control state;

[0056] Alternatively, when it is detected that the vehicle end disconnects the two-way communication, the second communication module is controlled to switch from the connection control state to the broadcast connectable state.

[0057] According to the above technical means, two-way communication between the vehicle end and the tire monitoring unit is realized, so that the vehicle end can actively control the tire monitoring unit.

[0058] A tire monitoring device, comprising:

[0059] An acquisition module, used to acquire current tire information collected by a tire monitoring unit on the tire;

[0060] a processing module, configured to determine a target operating parameter of the tire monitoring unit according to vehicle information and the current tire information, wherein the vehicle information includes one or more of vehicle state information, vehicle perception information, and driving setting information;

[0061] The control module is used to control the tire monitoring unit to monitor the corresponding tire according to the target working parameter.

[0062] A tire monitoring system, the system comprising: a vehicle end and a tire monitoring unit;

[0063] The vehicle end is used to execute the method described in the first aspect above;

[0064] The tire monitoring unit is used to execute the method described in the second aspect above.

[0065] A vehicle, comprising: a memory, a processor;

[0066] The memory is used to store computer programs / instructions; the processor is used to implement the method described in the first aspect and / or the second aspect according to the computer programs / instructions stored in the memory.

[0067] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it is used to implement the method described in the first aspect and / or the second aspect.

[0068] A computer program product, wherein the computer program product comprises a computer program for implementing the method described in the first aspect and / or the second aspect when the computer program is executed.

[0069] Beneficial effects of the present invention:

[0070] (1) The vehicle side of the present application actively controls the tire monitoring unit to realize adaptive adjustment of the working mode of the tire monitoring unit, and can adjust the working parameters of the tire monitoring unit according to actual needs, so that the power consumption of the tire monitoring unit is reduced;

[0071] (2) The vehicle end of the present application can obtain various types of vehicle information through the bus. By combining the vehicle information and the current tire information, it can accurately predict the vehicle's driving conditions, and then accurately adjust the working parameters of the tire monitoring unit. While ensuring the safety of tire monitoring, it reduces the power consumption of the tire monitoring unit and extends the service life of the battery powering the tire monitoring unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 A schematic diagram of a tire monitoring system provided in an embodiment of the present application;

[0073] Figure 2 A schematic diagram of a tire monitoring method according to an embodiment of the present application;

[0074] Figure 3 A schematic diagram of a flow chart of a tire monitoring method provided by another embodiment of the present application;

[0075] Figure 4 A schematic flow chart of a tire monitoring method provided in yet another embodiment of the present application;

[0076] Figure 5 A schematic flow chart of a tire monitoring method provided in yet another embodiment of the present application;

[0077] Figure 6 A schematic diagram of the interaction between the vehicle end and the tire monitoring unit provided in one embodiment of the present application;

[0078] Figure 7 A schematic diagram of the switching of the working state of the second communication module of the tire monitoring unit provided in one embodiment of the present application;

[0079] Figure 8 A schematic diagram of an electronic device provided in an embodiment of the present application.

[0080] Among them, 10 is the vehicle end; 11 is the first control module; 12 is the first communication module; 13 is the display module; 131 is the storage module; 132 is the screen; 20 is the tire monitoring unit; 21 is the second control module; 22 is the second communication module; 23 is the sensor; 24 is the battery. DETAILED DESCRIPTION

[0081] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0082] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0083] The tire pressure detection system includes sensors and monitoring control modules. The sensors include acceleration sensors, pressure sensors, and temperature sensors. The sensors are installed on each tire, and the monitoring control module is connected to each sensor. The sensors are used to monitor the relevant information of the tires, and the monitoring control module is used to calculate the pressure of each tire based on the relevant information. In the related art, the tire pressure detection system usually works independently. When the tire pressure detection system detects that the tire pressure is greater than a certain value, it sends abnormal information to the vehicle central control, and the vehicle central control outputs the corresponding tire pressure abnormality information. In order to ensure vehicle safety, when the tire pressure detection system starts working, the sensor samples according to the sampling frequency set by the factory, and sends the adopted relevant information to the monitoring control module according to the set transmission frequency. However, this working mode will cause the tire pressure detection system to have high power consumption, cause great damage to the battery, and affect the battery life.

[0084] This application proposes a tire monitoring method, based on the fact that a vehicle may encounter various road conditions during driving. Under different road conditions, the probability of tire abnormalities is different, so the actual monitoring needs of tires are different. In the embodiment of this application, the vehicle combines vehicle information and tire information to comprehensively judge the driving conditions of the vehicle, and then actively adjusts the working parameters of the tire monitoring unit, so that the tire monitoring unit can work with the optimal working parameters under various road conditions, reduce the power consumption of the tire monitoring unit, and extend the battery life.

[0085] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0086] In the present application, the electronic device is used as the execution subject to execute the tire monitoring method of the following embodiments. Specifically, the execution subject may be a hardware device of the electronic device, or a software application implementing the following embodiments in the electronic device, or a computer-readable storage medium installed with the software application implementing the following embodiments, or a code implementing the software application implementing the following embodiments.

[0087] Figure 1 A schematic diagram of a tire monitoring system provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the tire monitoring system includes: a vehicle end 10 and a tire monitoring unit 20 . The vehicle end 10 can establish a two-way communication with the tire monitoring unit 20 , or the vehicle end 10 can disconnect the two-way communication with the tire monitoring unit 20 .

[0088] In one example, the vehicle end 10 includes a first control module 11, a first communication module 12 and a bus communication module, wherein the first communication module 12 is used to communicate with the tire monitoring unit 20, the bus communication module is used to connect to the bus of the vehicle end 10, and obtain all information of the vehicle end 10 through the bus, and the first control module 11 is used to control the working parameters of the tire monitoring module according to relevant information.

[0089] In one example, the tire monitoring unit 20 includes a second control module 21, a second communication module 22, multiple sensors 23 and a battery 24, wherein the second communication module 22 is used to communicate with the vehicle end 10, and the multiple sensors 23 are used to collect current tire information of the wheels, and the multiple sensors 23 include but are not limited to temperature sensors 23, acceleration sensors 23 and pressure sensors 23; the second control module 21 is used to follow the control instructions of the first control module 11 of the vehicle end 10, adjust the working state and / or sampling frequency of the sensor 23, and the battery 24 is used to power the second control module 21, the second communication module 22 and the multiple sensors 23.

[0090] Optionally, the first communication module 12 and the second communication module 22 are wireless communication modules. The first communication module 12 is connected to the second communication module 22 so that information can be transmitted between the vehicle end 10 and the tire monitoring unit 20 .

[0091] As an example, the first communication module 12 and the second communication module 22 include at least two working connection states, such as a broadcast connection state and a control connection state. The broadcast connectable state means that the second communication module 22 transmits data to the first communication module 12 by broadcasting, and the control connection state means that the first communication module 12 sends a control instruction to the second communication module 22.

[0092] The connection state of the first communication module 12 and the second communication module 22 is switched by the first control module 11. As an example, the first control module 11 controls the second communication module 22 to switch to a broadcast connectable state, and the second communication module 22 broadcasts the current tire information collected by the sensor 23 to the local area network. The second communication module 22 obtains the current tire information collected by the tire monitoring unit 20 by monitoring the information in the local area network. The first control module 11 determines whether it is necessary to control the tire monitoring unit 20 to adjust the working parameters based on the current tire information and the vehicle information obtained based on the bus communication module. If necessary, the first control module 11 controls the second communication module 22 to switch to a control connection state, and the first communication module 12 sends the control information to the second communication module 22. After the second control module 21 receives the control instruction sent by the vehicle end 10 through the second communication module 22, it determines the working parameters of the sensor 23 according to the control instruction and adjusts the working parameters of the sensor 23. After adjusting the working parameters of the sensor 23, the second control module 21 feeds back the adjustment result to the first control module 11, and the second control module 21 controls the second communication module 22 to switch to the broadcast connection state, and continues to transmit the collected current tire information in the form of broadcast.

[0093] Optionally, in this embodiment, the vehicle end 10 controls the tire monitoring unit 20, including controlling the sampling frequency and working state of the sensor 23 of the tire monitoring unit 20, and the signal transmission power and signal transmission frequency of the second communication module 22 of the tire monitoring unit 20.

[0094] In some embodiments, the vehicle end 10 further includes a display module 13, and the display module 13 is connected to the first control module 11 of the vehicle end 10 through the bus communication module. Among them, the display module 13 includes a storage module 131 and a screen 132, the storage module 131 is used to receive and store the current tire information and / or the current working parameters of the tire monitoring unit 20 sent by the first control module 11, and the screen 132 is used to display the current tire information and / or the current working parameters of the tire monitoring unit 20 obtained from the storage module 131. The screen 132 is also used to receive the user's driving setting information, and store it through the storage module 131, and send the driving setting information to the first control module 11 through the bus communication module.

[0095] Figure 2 This is a flow chart of a tire monitoring method provided by an embodiment of the present application. Based on the above tire monitoring system, this embodiment is described in detail based on the working process of the tire monitoring system. Figure 2 As shown, the tire monitoring method includes:

[0096] S201, obtaining current tire information collected by a tire monitoring unit;

[0097] This embodiment is applied to the vehicle side, for example, to the central control (vehicle side) of the vehicle side. The tire monitoring unit includes a plurality of sensors, and the plurality of sensors are arranged on each tire of the vehicle to collect tire information of each tire. Optionally, the tire information includes at least one of tire temperature, acceleration and pressure.

[0098] As an example, the tire monitoring unit broadcasts the collected current tire information to the network, and the vehicle side obtains the current tire information of the tire through the monitoring network, and then processes the current tire information.

[0099] As an example, the tire detection unit may also send the collected current tire information to the vehicle end through a connection.

[0100] Optionally, the vehicle has multiple tires, each tire corresponds to at least one tire monitoring unit, so the vehicle side can obtain the current tire information collected by multiple tire monitoring units, and then control each tire monitoring unit separately. This embodiment is explained by taking the vehicle side controlling a tire monitoring unit as an example.

[0101] S202, determining target operating parameters of a tire monitoring unit according to vehicle information and current tire information;

[0102] Optionally, the vehicle information includes one or more of vehicle driving state information, environmental perception information and driving setting information. Among them, the vehicle information is obtained from other functional components of the vehicle through the bus communication module of the vehicle. For example, the vehicle driving state information includes vehicle driving speed, wheel height, wheel acceleration, wheel lateral swing angle, etc., which are obtained from various modules of the vehicle through the bus communication module. For another example, environmental perception information includes images collected by cameras, radar point cloud information detected by radar sensors, etc. The environmental perception information is collected by the vehicle's perception system, and the perception system is connected to the bus communication module. Therefore, the vehicle can obtain environmental perception information through the bus communication module. For another example, the driving setting information includes the driving mode, the vehicle driving mode selected by the user through the HMI interface of the vehicle, and the HMI interface and the bus communication module send the setting information to the vehicle central control, so the vehicle obtains the driving setting information through the bus communication module.

[0103] Optionally, the current tire information includes the current operating parameters of the tire monitoring unit and the battery power status of the tire monitoring unit. The vehicle side analyzes the current operating parameters of the tire monitoring unit under the current driving state of the vehicle based on the vehicle information and the current tire information to determine whether the battery of the tire monitoring unit is operating in a more optimal state of use. If not, the operating parameters of the tire monitoring unit are adjusted so that the battery operates in a more optimal state of use, thereby reducing battery power consumption and extending battery life. It should be noted that a more optimal state of use of the battery refers to low battery power consumption, less battery heat, etc.

[0104] As an example, the specific implementation of this step may be:

[0105] According to the vehicle information, the current driving condition of the vehicle is determined; and then according to the current driving condition and the current tire information, the target working parameters of the tire monitoring unit are determined.

[0106] It should be noted that the driving condition of the vehicle is positively correlated with the abnormal probability (damage probability) of the tire, that is, the worse the driving condition, the higher the abnormal probability of the tire and the easier it is to be damaged. Conversely, the better the driving condition, the lower the abnormal probability of the tire. Based on this, the relationship between the driving condition and the abnormal probability of the tire, combined with the optimal use state of the battery, establishes an association between the driving condition, tire information and the working parameters of the tire monitoring unit, so that under each driving condition, the tire detection unit works with the working parameters that put the battery in a better use state, meeting the vehicle's monitoring needs for the tire while keeping the battery in a better use state.

[0107] In this example, after determining the current driving condition of the vehicle according to the vehicle information, based on the association relationship between driving condition-tire information-operating parameters of the tire monitoring unit, the operating parameters matching the current driving condition are searched as the target operating parameters of the tire monitoring unit. The tire information includes the battery power status.

[0108] Taking the driving road conditions as complex road conditions and simple road conditions as an example, the battery power state includes a low power state and a normal power state. If the current driving road condition is a complex road condition and the battery power state is normal, the first working parameter is used as the working parameter of the tire monitoring unit; if the current driving road condition is a simple road condition and the battery power state is normal, the second working parameter is used as the working parameter of the tire monitoring unit, and the second working parameter is less than the first working parameter. Taking the sampling frequency of the sensor as an example of the working parameter, the first sampling frequency is greater than the second sampling frequency, that is, in complex road conditions, the sampling frequency of the tire monitoring unit is large, and the tires are frequently monitored, which can timely monitor tire abnormalities in sudden situations and ensure safe driving under complex road conditions. On the contrary, in simple road conditions, the sampling frequency of the tire monitoring unit is reduced. Based on the low probability of tire abnormalities in simple road conditions, reducing the number of sampling times can also meet the needs of tire abnormality monitoring, reduce battery power consumption, and extend battery life.

[0109] For another example, if the current driving road condition is a complex road condition and the battery power state is low, the third working parameter is used as the working parameter of the tire monitoring unit, and the third working parameter is less than the first working parameter, but the third working parameter is greater than the second working parameter. In this case, the number of sampling times can be reduced to reduce battery power consumption, but at the same time, the monitoring effect must be guaranteed. If the current driving road condition is a simple road condition and the battery power state is low, the fourth working parameter is used as the working parameter of the tire monitoring unit, and the fourth working parameter is less than the second working parameter.

[0110] Optionally, taking the vehicle information as vehicle driving state information as an example, the current driving condition of the vehicle may be determined based on the vehicle information as follows:

[0111] As an example, the vehicle driving state information includes wheel height. When the change in wheel height within a preset time period is greater than or equal to a first preset threshold, the vehicle's current driving road condition is determined to be a first road condition. When the change in wheel height is less than the first preset threshold, the vehicle's current driving road condition is determined to be a second road condition. The target operating parameter of the tire monitoring unit corresponding to the first road condition is greater than the target operating parameter of the tire monitoring unit corresponding to the second road condition.

[0112] When a vehicle is traveling on an unpaved bumpy road, the vehicle bounces and fluctuates greatly, and this road condition is defined as the first road condition. When the vehicle bounces and fluctuates greatly, the wheel height change can generally be detected. Therefore, in this embodiment, the wheel height change within a preset time period collected by the wheel height sensor is analyzed to analyze the wheel height change. If the wheel height change is greater than the first preset threshold and continues for a preset time period, it is determined to be the first road condition; otherwise, it is determined to be the second road condition, wherein the second road condition is a simple road condition with a flat road surface.

[0113] Optionally, in some examples, the current road condition of the vehicle can also be determined by analyzing the height difference of all wheels of the vehicle. For example, if the wheel height difference is greater than or equal to a preset height difference (e.g., 15 mm), it is determined as the first road condition, otherwise, it is determined as the second road condition.

[0114] Optionally, the first preset threshold may be 20 mm.

[0115] As an example, the vehicle driving state information includes wheel acceleration: when it is determined according to all wheel accelerations that the acceleration difference is greater than or equal to a second preset threshold, it is determined that the current driving road condition of the vehicle is a third road condition; when the acceleration difference is less than the second preset threshold, it is determined that the current driving road condition of the vehicle is a fourth road condition, wherein the target operating parameter of the tire monitoring unit corresponding to the third road condition is greater than the target operating parameter of the tire monitoring unit corresponding to the fourth road condition;

[0116] When the vehicle is driving normally, the accelerations of the four wheels are close. When the vehicle is driving on a slippery road, the accelerations of the wheels will be quite different. When the vehicle is driving on a slippery road, the tire pressure needs to be closely monitored, so this road condition is defined as the third road condition. On the contrary, the normal simple road condition is defined as the fourth road condition. Therefore, in this embodiment, by analyzing whether the acceleration difference of all wheels is greater than or equal to the second preset threshold, it is determined whether the current driving road condition of the vehicle is the third road condition or the fourth road condition.

[0117] As an example, the vehicle driving status information includes vehicle speed: when the vehicle speed is greater than or equal to a third preset threshold, the vehicle's current driving road condition is determined to be the fifth road condition; when the vehicle speed is less than the third preset threshold, the vehicle's current driving road condition is determined to be the sixth road condition, wherein the target operating parameters of the tire monitoring unit corresponding to the fifth road condition are greater than the target operating parameters of the tire monitoring unit corresponding to the sixth road condition.

[0118] When the vehicle speed exceeds a certain speed, the wheels are prone to high temperature tire blowout, and when the vehicle is running at normal speed, the wheels are in good working condition. Therefore, the third preset threshold is set as the critical value, and when the vehicle speed is greater than or equal to the third preset threshold, this driving road condition is defined as the fifth road condition, and correspondingly, when the vehicle speed is less than the third preset threshold, this driving road condition is defined as the sixth road condition. Based on this, this embodiment determines the current driving road condition of the vehicle by monitoring whether the vehicle speed is greater than or equal to the third preset threshold, and then determines the corresponding target working parameters.

[0119] Optionally, the third preset threshold may be 120 km / h.

[0120] In the above three examples, the first road condition, the third road condition and the fifth road condition are all relatively complex road conditions. Under such road conditions, it is necessary to pay close attention to the tire pressure condition. Therefore, under these road conditions, the target working parameters of the tire monitoring unit are relatively large. On the contrary, the second road condition, the fourth road condition and the sixth road condition are all relatively simple road conditions. Under such road conditions, the power consumption of the tire monitoring unit can be reduced.

[0121] In some examples, the first road condition, the third road condition, and the fifth road condition may all be defined as complex road conditions, and the target operating parameters of the tire monitoring unit under complex road conditions are all first operating parameters, for example, the sampling frequency is 20s, etc. Correspondingly, the second road condition, the fourth road condition, and the sixth road condition may all be defined as simple road conditions, and the target operating parameters of the tire monitoring unit under simple road conditions are all second operating parameters, and the first operating parameter is greater than the second operating parameter, for example, the sampling frequency is 40s, and the sampling frequency is reduced.

[0122] It should be noted that the various road conditions mentioned above may also be independent road conditions, and each road condition has different target working parameters corresponding to the requirements. The parameters can be set specifically according to the requirements, and this embodiment does not limit them.

[0123] Optionally, taking the vehicle information as environmental perception information as an example, the current driving condition of the vehicle may be determined based on the vehicle information as follows:

[0124] The road surface condition is determined based on the environmental perception information, and then the current driving condition of the vehicle is determined based on the road surface condition.

[0125] Taking the road conditions including bumpy roads and smooth roads as an example, the environmental perception information includes images and radar point cloud data. The vehicle's current road is analyzed based on the images and radar point cloud data to determine whether the road condition is a smooth road or a bumpy road. For bumpy roads, it is determined to be a complex road condition, and for smooth road conditions, it is determined to be a simple road condition. Under complex road conditions, the working parameters of the tire monitoring unit are greater than the working parameters of the tire monitoring unit under simple road conditions.

[0126] It is understandable that the road conditions determined based on the road surface state include but are not limited to the simple road conditions and complex road conditions mentioned above, and a variety of road conditions can be divided according to needs.

[0127] Optionally, taking the vehicle information as driving setting information as an example, the current driving condition of the vehicle may be determined based on the vehicle information as follows:

[0128] The driving setting information refers to driving mode setting information, wherein the driving modes include off-road mode, sports mode, standard mode, maintenance mode, etc.

[0129] The off-road mode is suitable for off-road and unpaved bumpy roads; the sports mode is suitable for high-speed roads and intense driving conditions; the standard mode is suitable for ordinary roads and mature road conditions; the maintenance mode is suitable for lifting maintenance, logistics transportation, and towing. Based on the applicable situations in different modes, a variety of road conditions are set, and based on the monitoring requirements for tires under different road conditions, the working parameters of the tire monitoring unit corresponding to different road conditions are set differently. In this way, during the vehicle driving process, the current driving road conditions of the vehicle can be determined based on the driving setting mode, and then the target working parameters of the tire monitoring unit can be determined, so as to achieve adaptive adjustment of the working parameters of the tire monitoring unit.

[0130] As an example, if the driving mode is the maintenance mode, the temperature sensor and the pressure sensor are turned off, the sampling frequency of the acceleration sensor is reduced (for example, adjusted to 60s), and the second communication module is turned off.

[0131] As an example, when the driving mode is a non-maintenance mode, the target operating parameters are determined based on other driving modes, or in combination with the above-mentioned vehicle driving state information and environmental perception information.

[0132] As an example, the tire monitoring unit includes multiple working modes, and each working module corresponds to at least one set of working parameters. The vehicle side controls the tire monitoring unit to adjust the working parameters by controlling the tire monitoring unit to switch the working mode. For example, a correspondence between vehicle information and current tire information and the working mode of the tire monitoring unit is established, and the target working mode of the tire detection unit is determined by the vehicle information and the current tire information, and then the target working parameters are determined according to the target working mode.

[0133] Optionally, in some examples, the working mode of the tire monitoring unit corresponds to the vehicle's driving conditions. For example, when the vehicle's driving conditions include complex road conditions and simple road conditions, the tire monitoring unit includes a first working mode and a second working mode. When the vehicle's driving conditions are complex road conditions, the working mode corresponding to the tire monitoring unit is the first working mode, and the working parameters corresponding to the first working mode are the first working parameters. When the vehicle's driving conditions are simple road conditions, the working mode corresponding to the tire monitoring unit is the second working mode, and the working parameters corresponding to the second working mode are the second working parameters.

[0134] S203, controlling the tire monitoring unit to monitor the corresponding tire according to the target working parameter.

[0135] In this step, after the vehicle determines the target operating parameters of the tire monitoring unit, it sends a control instruction to the tire monitoring unit so that the tire monitoring unit adjusts its current operating parameters according to the target operating parameters. Optionally, the operating parameters include the sampling frequency of the tire monitoring unit and / or the signal transmission power / signal transmission frequency of the tire monitoring unit.

[0136] As an example, after the vehicle determines the target working parameters, it directly sends the target working parameters to the tire monitoring unit, triggering the tire monitoring unit to adjust its current working parameters according to the target working parameters. In this example, if the current working parameters of the tire detection unit are the same as the target working parameters, the tire monitoring unit will not make adjustments. If the current working parameters of the tire monitoring unit are different from the target working parameters, the current working parameters will be adjusted.

[0137] As an example, the vehicle side controls the tire monitoring unit to monitor the corresponding tire according to the target working parameter only when the current working parameter of the tire monitoring unit is different from the target working parameter. The specific implementation method can be:

[0138] Determine whether the current working parameters of the tire monitoring unit match the target working parameters; if so, return to step S201 and continue to monitor the current tire information collected by the tire monitoring unit; if not, control the tire monitoring unit to monitor the corresponding tire according to the target working parameters.

[0139] It is understandable that each time the tire detection unit updates the current working parameters, it reports the current working parameters to the vehicle end, and the vehicle end stores the current working parameters of the tire monitoring unit. When the vehicle end detects that the current working parameters do not match the target working parameters, it controls the tire monitoring unit to switch the working parameters. This method can reduce the data transmission between the vehicle end and the tire monitoring unit, reduce the power consumption of the second communication module, and thus reduce the battery power consumption of the tire monitoring unit.

[0140] In this embodiment, since the tire monitoring unit can actively control its working parameters through the vehicle side, the vehicle side determines the tire monitoring unit's lower power consumption and more suitable working mode under the current driving scenario based on one or more vehicle information, such as vehicle driving status information, environmental perception information and driving setting information, and controls the tire monitoring unit to adjust its working parameters. Therefore, the tire pressure detection system can adaptively adjust the power consumption based on the scenario, adaptively reduce the damage to the power supply battery of the tire detection unit, and extend the battery life.

[0141] Figure 3 A schematic diagram of a tire monitoring method provided in an embodiment of the present application. This embodiment is based on the above Figure 2 In the embodiment shown, in this embodiment, the vehicle information includes vehicle driving state information, environmental perception information and driving setting information. Based on the combination of the above three types of information, the method for determining the current driving condition of the vehicle is further limited, such as Figure 3 As shown, the current driving condition of the vehicle is determined based on the vehicle information, including:

[0142] S301, predicting a vehicle state according to vehicle driving state information.

[0143] Optionally, the vehicle state includes a normal motion state and an abnormal motion state, and the abnormal motion state includes one or more of slipping, large wheel hop fluctuations and abnormally high speed.

[0144] Specifically, the vehicle state prediction method is the same as the above Figure 2 The road condition determination method of the embodiments is the same, and the details can be referred to the above embodiments.

[0145] S302, determining a road surface condition according to the environmental perception information;

[0146] Optionally, the road surface state includes a bumpy road surface and a smooth road surface. The environmental perception information includes an image and radar point cloud data, and the current road of the vehicle is analyzed according to the image and radar point cloud data to determine whether the road surface state is a smooth road surface or a bumpy road surface. For a bumpy road surface.

[0147] S303, determining a vehicle driving mode according to the driving setting information;

[0148] Optionally, the vehicle driving model includes one or more of an off-road mode, a sports mode, a standard mode, and a maintenance mode. The vehicle driving mode is determined according to a selection operation of a user.

[0149] S304, determining the current driving state of the vehicle according to the vehicle state, the road state and the vehicle driving model;

[0150] As an example, when the vehicle is in an abnormal movement state, the road surface is bumpy, and the driving mode is a sports mode, the vehicle's current driving state is determined to be a complex road condition; when the vehicle is in a normal operation state, the road surface is flat, and the driving mode is a standard mode, the vehicle's current driving state is determined to be a simple road condition.

[0151] Alternatively, in some examples, the current driving state of the vehicle is determined based on the vehicle state, the road state, and the vehicle driving model, including:

[0152] Obtaining vehicle driving status information weights, environment perception information weights, and driving setting information weights;

[0153] The current driving condition of the vehicle is determined based on the weights of the vehicle status and vehicle driving status information, the weights of the road surface status and environmental perception information, and the weights of the vehicle driving mode and driving setting information.

[0154] Vehicle information includes multiple types of information, and different information has different corresponding weights. Therefore, when analyzing the current driving conditions of the vehicle, the weights corresponding to each type of information are combined for analysis. Different vehicles have different weights for each type of information. Vehicle information includes vehicle driving status information, environmental perception information, and driving setting information. Each type of information is calibrated with a weight. When analyzing the current driving conditions of the vehicle, the analysis results corresponding to the information with a large weight are preferred, which is adapted to different vehicles and improves the accuracy of the judgment of the current driving conditions of the vehicle.

[0155] For example, assuming that the vehicle driving status information of a certain model can better reflect the current driving condition of the vehicle, the weight of the calibrated vehicle driving status information is large, and the weight of other information is small. When judging the current driving condition of the vehicle, the analysis result of the vehicle driving status information is inclined. Assuming that the environmental perception information of a certain model can better reflect the current driving condition of the vehicle, the weight of the calibrated environmental perception information is large, and the weight of other information is small. When judging the current driving condition of the vehicle, the analysis result of the environmental perception information is inclined.

[0156] Optionally, the vehicle driving state information includes wheel height, wheel acceleration, vehicle speed and heading angle, etc. In some examples, the prediction of the vehicle state can also be comprehensively judged based on the weights calibrated by various vehicle driving state information to improve the accuracy of vehicle state prediction.

[0157] In this embodiment, multiple types of information are combined to analyze the current driving condition of the vehicle, thereby improving the prediction of the road condition, thereby improving the accuracy of controlling the working mode of the tire monitoring unit and improving the driving safety performance of the vehicle.

[0158] Figure 4 This is a flow chart of a tire monitoring method provided by an embodiment of the present application. This embodiment is based on all the above embodiments. Figure 4 As shown, the tire monitoring method includes:

[0159] S401, obtaining current tire information collected by a tire monitoring unit;

[0160] Among them, step S401 and Figure 2 The implementation of step S201 in the embodiment is similar and will not be repeated here in this embodiment.

[0161] S402, determining the current driving condition of the vehicle according to the vehicle information;

[0162] Among them, step S402 and Figure 2 Step S202 and / or Figure 3 The implementation method of the embodiment is similar, and this embodiment will not be described again here.

[0163] S403, determining a target sampling frequency of a tire monitoring unit according to current driving conditions and current tire information;

[0164] S404: Determine a target signal transmission power and / or a target signal transmission frequency of the tire monitoring unit according to the signal reception strength of the current tire information.

[0165] S405, controlling the sensor of the tire monitoring unit to sample according to the target sampling frequency, and the second communication module to send the collected current tire information according to the target signal sending power and / or the target signal sending frequency.

[0166] The tire monitoring unit includes a sensor and a second communication module, and the working parameters of the tire monitoring unit include working parameters of the sensor and working parameters of the second communication module. The working parameters of the sensor include a sampling frequency, and the working parameters of the second communication module include a signal transmission power and / or a signal transmission frequency. In this embodiment, the vehicle end can not only adjust the working parameters of the sensor, but also adjust the working parameters of the second communication module.

[0167] In some examples, the target signal transmission power and / or target signal transmission frequency of the tire monitoring unit can also be determined based on the current driving conditions and current tire information. The signal reception strength of the current tire information is to further adjust the signal strength received by the vehicle end.

[0168] For example, assuming that the vehicle's driving conditions are divided into complex conditions and simple conditions, if the vehicle's current driving conditions are determined to be complex conditions based on the vehicle information, the sampling frequency is increased, for example, set to 20s; the target signal transmission power and / or target signal transmission frequency of the tire monitoring unit is increased, for example, the interval is 100ms; if the vehicle's current driving conditions are simple conditions, the sampling frequency is reduced, for example, 40s; the target signal transmission power and / or target signal transmission frequency of the tire monitoring unit is reduced, for example, the interval is 200ms. Furthermore, if the signal reception strength of the current tire information is weak in complex conditions, the target signal transmission power and / or target signal transmission frequency will be further increased, or, if the signal reception strength of the current tire information is weak in simple conditions, the target signal transmission power and / or target signal transmission frequency will be further increased.

[0169] The following is an explanation based on an embodiment of determining a target sampling frequency of a tire monitoring unit according to current driving conditions and current tire information; and determining a target signal transmission power and / or a target signal transmission frequency of the tire monitoring unit according to a signal reception strength of the current tire information:

[0170] The target operating parameters that need to be determined on the vehicle side include the target sampling frequency, the target signal transmission power and / or the signal transmission frequency. Among them, the sampling frequency reflects the number of sampling times of the sensor. When the tire status needs to be monitored frequently and the battery power is normal, the sampling frequency is increased. On the contrary, when the tire status does not need to be monitored frequently or the battery power is low, the sampling frequency can be reduced. Therefore, the sampling frequency of the sensor is related to the vehicle's driving conditions and the battery power. Therefore, the target sampling frequency of the sensor is determined based on the vehicle's current driving conditions and the current tire information.

[0171] The signal transmission power and / or signal transmission frequency reflect the signal strength and number of times the second communication module sends tire information to the vehicle end. Since each vehicle includes at least 4 wheels, the positions of the tire monitoring units on each wheel are not absolute, so the signal strength transmitted from the tire monitoring units of each tire to the vehicle end central control is different; or affected by the vehicle driving environment, the signal transmission between the tire monitoring unit and the vehicle end is not absolutely stable, especially in some tunnels or mountainous areas with weak signals, the signal of tire information received by the vehicle end is weak, and the tire information may not even be received. In the related art, regardless of whether the signal is strong or weak, the tire monitoring unit only sends the collected tire information, there is no mutual communication between the tire monitoring unit and the vehicle end, and the vehicle end does not control the tire monitoring unit, so regardless of whether the vehicle end receives the tire information, the tire monitoring unit continues to send normally, on the one hand, the power of the tire monitoring unit is consumed, and on the other hand, the vehicle end cannot fail to receive the tire information. Based on this, in this embodiment, the vehicle actively controls the tire monitoring unit according to the signal strength of the current tire information, and adjusts the working parameters of the tire monitoring unit, so that the tire information can be effectively transmitted between the tire monitoring unit and the vehicle end.

[0172] For example, if the signal receiving strength of the current tire information is weak, such as the signal strength of the current tire information is less than the set value RSSI1, the signal transmission power and / or signal transmission frequency of the tire monitoring unit is increased to ensure that the vehicle end can receive the current tire information. If the signal receiving strength of the current tire information is strong, such as the signal strength of the current tire information is greater than or equal to the set value RSSI1, the signal transmission power and / or signal transmission frequency of the tire monitoring unit can be appropriately reduced to reduce the battery energy consumption of the tire monitoring unit.

[0173] In some examples, the current tire information may be lost due to environmental influences. In related technologies, since the signal receiving interruption (vehicle side) will not actively control the tire monitoring unit, the tire monitoring control will not adjust its own working parameters due to signal loss or delay. In some cases, the vehicle side cannot receive the current tire information and cannot promptly prompt the user of the tire condition, which reduces safety. Based on this, in this example, the signal transmission power and / or signal transmission frequency of the tire monitoring unit are adjusted to increase in combination with the cumulative number of signal losses per unit time. For example, when the signal strength of the current tire information is greater than or equal to the set value RSSI1, and the cumulative number of signal losses per unit time is greater than or equal to the preset number (N1), the signal transmission power and / or signal transmission frequency of the tire monitoring unit are increased.

[0174] Furthermore, the target signal transmission power and / or target signal transmission frequency of the tire monitoring unit are determined based on the current tire information and its signal reception strength. In this example, the current tire information includes the current operating parameters of the tire monitoring unit and the battery power status of the tire monitoring unit. Specifically, the target signal transmission power and / or target signal transmission frequency of the tire monitoring unit are determined based on the battery power status and the signal reception strength of the current tire information. When the battery power is low, the transmission power and / or signal transmission frequency of the tire monitoring unit are reduced to protect the battery.

[0175] Optionally, in some embodiments, the vehicle end may also determine the target signal sending power and / or target signal sending frequency of each tire monitoring unit based on the reception strength of the current tire information sent by each tire monitoring unit, so that the signal sending power and / or signal sending frequency of each tire monitoring unit are within a preset range, so that the signal sending power and / or signal sending frequency of each tire monitoring unit remain consistent, which facilitates the vehicle end to perform subsequent control according to the status of each wheel.

[0176] It should be noted that the combination of the above-mentioned road conditions and signal strength variables to adjust the working parameters of the tire monitoring unit is one example. Based on the vehicle information obtained by the vehicle end in the embodiment of the present application, the technical solutions for actively controlling the working parameters of the tire monitoring unit are all within the protection scope of the embodiment of the present application. It can be understood that the use of other judgment conditions on the vehicle end, such as the vehicle engine state and other states of the wheel speed sensor to control the adjustment of the working parameters of the tire monitoring unit also belongs to the protection scope of the present application. Similarly, for the working mode of the tire monitoring unit, different working modes can be set according to the different combinations of the pressure, temperature and acceleration sampling frequency of the sensor, the signal strength of the information sent by the second communication module, and the frequency of signal transmission. For example, when the road conditions are good and the speed is slow, the tire pressure detection module can set a lower pressure and temperature sampling frequency to reduce power consumption; when the road conditions are poor or the speed is fast, a higher pressure and temperature sampling frequency is set to strengthen the monitoring of the health of the tires and provide driving safety; when driving in a complex electromagnetic environment, the wireless communication signal is interfered with, and a higher signal transmission strength and information transmission frequency can be set to improve the stability and reliability of the tire pressure monitoring system.

[0177] In this embodiment, the working parameters of the tire monitoring unit are adjusted based on a combination of multiple information, and the sampling frequency and signal transmission power / signal transmission frequency of the tire monitoring unit are adjusted to enrich the working mode of the tire monitoring unit. Based on fine-grained adjustments, the tire monitoring unit works in a better state, with lower power consumption and longer battery life.

[0178] Figure 5This is a flow chart of a tire monitoring method provided by an embodiment of the present application. Based on all the above embodiments, this embodiment is described in detail based on the working process of the tire monitoring system. Figure 5 As shown, the tire monitoring method includes:

[0179] S501, collecting current tire information of the tire according to the current working parameters, and broadcasting the current tire information;

[0180] This step is applied to the tire monitoring unit, which includes a second control module, a second communication module and multiple sensors, wherein the second communication module is used to connect to the vehicle end, on the one hand for broadcasting the current tire information collected by the sensor, and on the other hand for receiving the target working parameters (carrying control instructions of the target working parameters) sent by the vehicle end, and the second control module is used to adjust the working parameters of the sensor and / or the working parameters of the second communication module according to the target working parameters.

[0181] During the operation of the tire monitoring unit, the sensor collects the current tire information of the tire according to the current sampling frequency, and then broadcasts the current tire information to the network through the second communication module. The vehicle end can obtain the current tire information by monitoring the network, and then determine whether to adjust the working parameters of the tire monitoring unit according to the current tire information and vehicle information. The specific process refers to the above embodiment.

[0182] S502, establishing two-way communication with the vehicle end;

[0183] In this step, if the vehicle end sends a two-way communication establishment request to the tire monitoring unit, two-way communication is established with the vehicle end.

[0184] S503, receiving the target operating parameters sent by the vehicle end, and updating the current operating parameters based on the target operating parameters.

[0185] When the vehicle side determines that the tire monitoring unit needs to be adjusted, it actively sends the target operating parameters of the tire monitoring unit to the tire monitoring unit to control the tire monitoring unit to adjust its operating parameters.

[0186] In this step, after receiving the target operating parameters sent by the vehicle end, the tire monitoring unit can directly update its current operating parameters according to the target operating parameters, that is, adjust the current operating parameters to the target operating parameters.

[0187] Alternatively, in some examples, since the vehicle side cannot know the current state of the tire monitoring unit when analyzing the target operating parameters of the tire monitoring unit, it does not consider whether the tire monitoring unit's own state can run the target operating parameters. Therefore, after receiving the target operating parameters, the tire monitoring unit also comprehensively determines whether to adjust its operating parameters based on the target operating parameters and the current state of the tire monitoring unit to avoid the adjusted operating parameters causing higher power consumption of the tire monitoring unit or causing damage to the tire monitoring unit.

[0188] Optionally, in this example, the implementation method may be:

[0189] When the tire monitoring unit receives the target working parameter sent by the vehicle end, it determines whether to perform the working parameter change operation according to the current state of the tire monitoring unit and the target working parameter;

[0190] If yes, the current working parameters are updated based on the target working parameters, and the working parameter update completion information is fed back to the vehicle side. If no, the update rejection information is fed back to the vehicle side.

[0191] In this embodiment, the tire monitoring unit responds to the control of the vehicle side, and the vehicle side actively controls the tire monitoring unit according to the vehicle information and the current tire information, so that the tire monitoring unit can operate with more matching working parameters, reduce power consumption, and extend battery life.

[0192] Figure 6 The diagram of the interaction between the vehicle end and the tire monitoring unit provided in one embodiment of the present application, this embodiment illustrates the tire monitoring process from the interactive control process between the vehicle end and the tire monitoring unit, such as Figure 6 As shown, the tire monitoring method includes:

[0193] S601, collecting current tire information, broadcasting current tire information, and waiting for connection;

[0194] This step is applied to the tire monitoring unit. The tire detection unit collects tire information with current working parameters and broadcasts the tire information to the network, waiting for the vehicle end to connect.

[0195] S602, scanning the tire monitoring unit to obtain current tire pressure information and obtain vehicle information from the bus;

[0196] In this step, the vehicle side monitors the network in real time or at a fixed time, scans each tire monitoring unit to obtain current tire information, and simultaneously obtains vehicle information from the bus.

[0197] S603, the vehicle side determines the target working parameters of the tire monitoring unit according to the vehicle information and the current tire information;

[0198] In this step, the method for the vehicle side to determine the target working parameters is the same as that listed in the above embodiments, and specific reference is made to the above embodiments.

[0199] S604, determining whether the target operating parameter matches the current operating parameter of the tire monitoring unit;

[0200] In this step, the vehicle side compares the target working parameter with the current working parameter of the tire monitoring unit to determine whether they are consistent or close. If so, the tire monitoring unit is not controlled to adjust the working parameter. If not, the tire monitoring unit is controlled to adjust the working parameter in order to make the tire monitoring unit work better.

[0201] If not, execute S605 to establish two-way communication with the tire monitoring unit;

[0202] In this step, before the vehicle controls the tire monitoring unit to adjust the working parameters, it initiates a two-way communication request to the tire monitoring unit to request the establishment of two-way communication, so as to facilitate the interaction between the vehicle and the tire monitoring unit and realize the control of the tire monitoring unit. If the tire monitoring unit agrees to the two-way communication of the vehicle after receiving the two-way communication request, the vehicle and the tire monitoring unit complete the establishment of two-way communication.

[0203] S607, the vehicle end sends the target working parameters to the tire monitoring unit;

[0204] After establishing a two-way communication request, the vehicle side sends the target operating parameters to the tire monitoring unit.

[0205] As an example, the tire monitoring unit controls the second communication module to switch from the broadcastable state to the connection control state to establish two-way communication, and the vehicle end also controls the first communication module to switch to the connection control state. When the second communication module is in the broadcastable state, the current tire information is sent by broadcasting. When the second communication module is in the connection control state, information can be transmitted bidirectionally with the vehicle end in a point-to-point manner.

[0206] S608, the tire monitoring unit receives the tire monitoring unit and updates the current working parameter based on the target working parameter;

[0207] In this step, the specific implementation method of the tire monitoring unit updating the current working parameters is the same as above. Figure 5 The embodiments shown are the same, and specific details can be referred to the above embodiments, which will not be described again here.

[0208] S609, the tire monitoring unit feeds back information on the completion of the working parameter update to the vehicle end;

[0209] In this step, based on two-way communication, after the working parameters of the tire monitoring unit are updated, relevant information is fed back to the vehicle end to report the updated current working parameters of the tire monitoring unit.

[0210] The vehicle end receives the working parameter update completion information fed back by the tire monitoring unit and requests to disconnect the two-way communication to reduce the power consumption of the tire monitoring unit.

[0211] Optionally, after receiving the request to disconnect the two-way communication, the tire monitoring unit controls the second communication module to switch from the connection control state to the broadcast connectable state, so that the two-way communication is disconnected, and the tire monitoring unit sends the current tire information by broadcasting.

[0212] In this embodiment, two-way communication is actively established on the vehicle side, and the working parameters of the tire monitoring unit are actively controlled, so that the tire monitoring unit can adaptively adjust the working parameters according to the vehicle driving conditions, thereby avoiding the tire monitoring unit always working in a high power consumption mode, reducing battery damage of the tire monitoring unit, and extending battery life.

[0213] In the above Figure 6 Based on the embodiment, the working state control process of the second communication module of the tire monitoring unit during the interaction between the vehicle end and the tire monitoring unit is further described, such as Figure 7 As shown, the working states of the second communication module of the tire monitoring unit include a low-power sleep state, a broadcast connectable state and a connection control state.

[0214] When the tire monitoring unit works in a low-power sleep state, the second communication module is in sleep mode, and the sensor works at a lower sampling frequency to monitor the tire internal air pressure, temperature, acceleration and other information. When the acceleration is greater than or equal to G1 or the air pressure change is greater than or equal to ΔP, the second communication module is converted to a broadcast connectable state. Specifically, the second control module of the tire monitoring unit controls the second communication module to be converted to a broadcast connectable state.

[0215] The tire monitoring unit is in working state, and the second communication module is in broadcast connectable state, broadcasting the current tire information to the network. At the same time, the sensor works based on the default sampling frequency and continuously monitors the current tire information. When the vehicle sends a two-way communication request to the tire monitoring unit, and the two-way communication request is successfully connected, the second control module controls the second communication module to switch to the connection control state. When the second communication module is in the connection control state, if the second control module detects that the acceleration is less than G1 and the timing is greater than or equal to T1, or the air pressure change is less than ΔP, the tire monitoring unit switches to a low-power sleep state, and the second communication module sleeps at the same time.

[0216] The second communication module is in the connection control state. When receiving the working mode conversion request (target working parameter switching request) of the tire monitoring unit sent by the vehicle end, if the tire monitoring unit accepts the mode conversion request, the sampling frequency of the sensor and the configuration of the second communication module are reset, and the setting result is fed back to the vehicle end after the setting is completed. After receiving the feedback information from the tire monitoring unit, the vehicle end actively disconnects the two-way communication, and the second control module controls the second communication module to return to the broadcast connectable state.

[0217] Specifically, the vehicle initiates a two-way communication request to the tire monitoring unit, requesting the establishment of two-way communication, so as to facilitate the interaction between the vehicle and the tire monitoring unit and realize the control of the tire monitoring unit. At this time, the tire monitoring unit receives the two-way communication request, and feeds back the consent information to the vehicle, agreeing to the two-way communication of the vehicle, so that the vehicle and the tire monitoring unit complete the establishment of two-way communication, and point-to-point transmission can be realized based on the two-way communication.

[0218] When the vehicle end initiates a two-way communication disconnection request to the tire monitoring unit, the tire monitoring unit receives the two-way communication disconnection request and controls the second communication module to return to the broadcast connectable state.

[0219] In this embodiment, the working state of the second communication module is switched, so that the tire monitoring unit can achieve the lowest power consumption when the vehicle is stopped and not moving; after the vehicle is moving, the working mode of the tire monitoring unit is dynamically adjusted through active control on the vehicle side, so that the reliability and stability of the tire pressure system are higher.

[0220] It should be noted that, in the present embodiment, the second communication module is a wireless communication module, and the wireless communication module includes but is not limited to Bluetooth wireless communication, Star Flash wireless communication or other low-power, high-reliability two-way wireless communication.

[0221] This embodiment realizes the communication between the vehicle end and the tire monitoring unit, so that the vehicle end can actively control the tire monitoring unit.

[0222] The present application also provides a tire monitoring device, the device comprising:

[0223] An acquisition module, used to acquire current tire information collected by a tire monitoring unit on the tire;

[0224] a processing module, configured to determine a target operating parameter of a tire monitoring unit according to vehicle information and current tire information, wherein the vehicle information includes one or more of vehicle state information, vehicle perception information, and driving setting information;

[0225] The control module is used to control the tire monitoring unit to monitor the corresponding tire according to the target working parameters.

[0226] The tire monitoring device provided in the embodiment of the present application can execute the above method embodiment. Its specific implementation principle and technical effects can be found in the above method embodiment, which will not be described in detail in this embodiment.

[0227] like Figure 8 As shown, the embodiment of the present application further provides an electronic device, including: a processor 801, a memory 802; optionally, the electronic device 800 further includes a communication component 803. The processor 801, the memory 802 and the communication component 803 are connected via a CAN bus.

[0228] The memory 802 is used to store computer programs / instructions; the processor 801 is used to execute the computer programs / instructions stored in the memory to implement the methods involved in the above embodiments.

[0229] The electronic device 800 also includes a communication interface, wherein the processor is used to provide computing power and control capabilities, and can be a GPU, CPU, NPU, MCU, FPGA, etc. The storage device includes an internal memory and a non-volatile memory. The non-volatile memory stores a computer program that implements the above method. The internal memory provides an environment for program startup and operation. The communication interface is used to communicate with an external terminal by wire or wireless.

[0230] In this embodiment, the electronic device may be an electronic component in a car, or may be a car. Alternatively, the electronic device may be a mobile terminal.

[0231] The present invention also provides a computer-readable storage medium / computer program product, in which computer control instructions are stored / the computer program product includes computer control instructions, and when the computer control instructions are executed by a processor, they are used to implement the methods involved in the above-mentioned embodiments.

[0232] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A tire monitoring method, characterized in that: Applied to the vehicle side, the method includes: Obtain current tire information collected by the tire monitoring unit; Determining a target operating parameter of the tire monitoring unit according to vehicle information and the current tire information, wherein the vehicle information includes one or more of vehicle driving state information, environmental perception information, and driving setting information; The tire monitoring unit is controlled to monitor the corresponding tire according to the target operating parameter.

2. The method according to claim 1, characterized in that: The step of determining the target operating parameters of the tire monitoring unit according to the vehicle information and the current tire information includes: Determine the current driving condition of the vehicle according to the vehicle information; According to the current driving road condition and the current tire information, a target operating parameter of the tire monitoring unit is determined.

3. The method according to claim 2, characterized in that The step of determining the target operating parameters of the tire monitoring unit according to the current driving road condition and the current tire information includes: Determining a target sampling frequency of the tire monitoring unit according to the current driving road condition and the current tire information; According to the signal reception strength of the current tire information, the target signal transmission power and / or target signal transmission frequency of the tire monitoring unit is determined; the target operating parameters include target sampling frequency, target signal transmission power and / or signal transmission frequency.

4. The method according to any one of claims 2 to 3, characterized in that: The vehicle information includes vehicle driving state information, and the vehicle driving state information includes one or more of wheel height, wheel acceleration, and vehicle speed. Determining the current driving condition of the vehicle according to the vehicle information includes: When the change in wheel height within a preset time period is greater than or equal to a first preset threshold, it is determined that the current driving road condition of the vehicle is a first road condition; when the change in wheel height is less than the first preset threshold, it is determined that the current driving road condition of the vehicle is a second road condition, wherein the target operating parameter of the tire monitoring unit corresponding to the first road condition is greater than the target operating parameter of the tire monitoring unit corresponding to the second road condition; Or, when it is determined based on all the wheel accelerations that the acceleration difference is greater than or equal to the second preset threshold, it is determined that the current driving road condition of the vehicle is the third road condition, and when the acceleration difference is less than the second preset threshold, it is determined that the current driving road condition of the vehicle is the fourth road condition, wherein the target operating parameter of the tire monitoring unit corresponding to the third road condition is greater than the target operating parameter of the tire monitoring unit corresponding to the fourth road condition; Alternatively, when the vehicle speed is greater than or equal to a third preset threshold, the vehicle's current driving road condition is determined to be the fifth road condition, and when the vehicle speed is less than the third preset threshold, the vehicle's current driving road condition is determined to be the sixth road condition, wherein the target operating parameters of the tire monitoring unit corresponding to the fifth road condition are greater than the target operating parameters of the tire monitoring unit corresponding to the sixth road condition.

5. The method according to any one of claims 2 to 3, characterized in that: Determining the current driving condition of the vehicle according to the vehicle information includes: predicting the vehicle state according to the vehicle driving state information, determining a road surface state according to the environmental perception information; determining a vehicle driving mode based on the driving setting information; Determining a current driving state of the vehicle according to the vehicle state, the road state and the vehicle driving model; Among them, the vehicle state includes a normal movement state and an abnormal movement state, the abnormal movement state includes one or more of slipping, large wheel hop fluctuations and abnormally high speed, the road surface state includes bumpy road surface and flat road surface, and the vehicle driving model includes one or more of off-road mode, sports mode, standard mode and maintenance mode.

6. The method according to claim 5, characterized in that The determining the current driving state of the vehicle according to the vehicle state, the road state and the vehicle driving model includes: Obtaining vehicle driving status information weights, environment perception information weights, and driving setting information weights; The current driving condition of the vehicle is determined based on the weights of the vehicle state and the vehicle driving state information, the weights of the road state and the environmental perception information, and the weights of the vehicle driving mode and the driving setting information, wherein different vehicles have different weights for each type of information.

7. The method according to any one of claims 1 to 3, characterized in that: The controlling the tire monitoring unit to monitor the corresponding tire according to the target working parameter includes: determining whether the target operating parameter matches a current operating parameter of the tire monitoring unit; If not, initiating a two-way communication request to the tire monitoring unit; When receiving the acknowledgement information fed back by the tire monitoring unit, two-way communication is established; The target operating parameter is sent to a tire monitoring unit based on the two-way communication to control the tire monitoring unit to monitor the corresponding tire according to the target operating parameter.

8. The method according to claim 7, characterized in that After sending the target operating parameter to the tire monitoring unit based on the two-way communication to control the tire monitoring unit to monitor the corresponding tire according to the target operating parameter, the method further includes: When the working parameter update completion information fed back by the tire monitoring unit is received, the two-way communication is disconnected.

9. A tire monitoring method, characterized in that: Applied to a tire monitoring unit, the method comprises: Collecting current tire information of the tire according to current working parameters, and broadcasting the current tire information; Establish two-way communication with the vehicle end; Receive the target operating parameter sent by the vehicle end, and update the current operating parameter based on the target operating parameter, wherein the target operating parameter is determined by the vehicle end based on the current tire information.

10. The method according to claim 9, characterized in that The receiving the target operating parameter sent by the vehicle end and updating the current operating parameter based on the target operating parameter includes: Receiving the target working parameter sent by the vehicle end, and determining whether to perform the working parameter replacement operation according to the current state of the tire monitoring unit and the target working parameter; If so, the current operating parameters are updated based on the target operating parameters, and the operating parameter update completion information is fed back to the vehicle end.

11. The method according to claim 9, characterized in that The tire monitoring unit includes a second communication module, and the method further includes: When establishing two-way communication with the vehicle end, controlling the second communication module to switch from a broadcastable state to a connection control state; Alternatively, when a two-way communication disconnection request sent by the vehicle end is received, the second communication module is controlled to switch from the connection control state to the broadcast connectable state.

12. A tire monitoring device, characterized in that: The device comprises: An acquisition module, used to acquire current tire information collected by a tire monitoring unit on the tire; a processing module, configured to determine a target operating parameter of the tire monitoring unit according to vehicle information and the current tire information, wherein the vehicle information includes one or more of vehicle state information, vehicle perception information, and driving setting information; The control module is used to control the tire monitoring unit to monitor the corresponding tire according to the target working parameter.

13. A tire monitoring system, characterized in that: The system comprises: a vehicle-side and tire monitoring unit; The vehicle end is used to perform the method according to any one of claims 1 to 8; The tire monitoring unit is used to execute the method according to any one of claims 9 to 11.

14. A vehicle, characterized in that: include: Memory, processor; The memory is used to store computer programs / instructions; The processor is configured to implement the method according to any one of claims 1 to 11 according to the computer program / instructions stored in the memory.

15. A computer-readable storage medium / computer program product, characterized in that: The computer-readable storage medium stores a computer program / the computer program product includes a computer program, and when the computer program is executed by a processor, it is used to implement the method according to any one of claims 1 to 11.

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