CN114506187A - Vehicle tire pressure control method, device and system and vehicle - Google Patents
Vehicle tire pressure control method, device and system and vehicle Download PDFInfo
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- CN114506187A CN114506187A CN202210121165.9A CN202210121165A CN114506187A CN 114506187 A CN114506187 A CN 114506187A CN 202210121165 A CN202210121165 A CN 202210121165A CN 114506187 A CN114506187 A CN 114506187A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
Abstract
The invention discloses a method, a device and a system for controlling a tire pressure of a vehicle and the vehicle, wherein the method comprises the following steps: acquiring running environment information of a vehicle in the running process of the vehicle, wherein the running environment information comprises the current altitude; obtaining a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmospheric static equation; the tire pressure of the vehicle is adjusted based on the tire pressure correction value. The method can effectively avoid the influence of different degrees on the vehicle caused by overhigh or overlow tire pressure due to the change of the environment, thereby being beneficial to improving the safety of the vehicle and further improving the comfort of passengers.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a method, a device and a system for controlling vehicle tire pressure and a vehicle.
Background
In the driving process of an automobile, improper tire pressure can affect the automobile to different degrees, the safe driving of the automobile is affected, the subjective feeling of driving is directly affected, and even the safety problem of passengers can be involved.
Particularly, if the tire pressure is too high, the friction force and the adhesive force of the tire are easily reduced, the braking effect is influenced, the steering wheel is easily vibrated, the vehicle deviation is caused, the comfort of the vehicle running is seriously influenced, the local abrasion of patterns in the center of the tire tread of the tire is accelerated, and the service life of the tire is shortened. In addition, the vibration of the automobile body is increased, the service life of other parts is indirectly influenced, the tire cord is subjected to excessive stretching deformation, the elasticity of the tire body is reduced, and the load applied to the automobile in the running process is increased. Meanwhile, the rolling resistance of the tire is reduced, and when a large number of sharp objects such as nails or glass are arranged on the road surface, the tire is easy to prick into the vehicle, and internal cracking and explosion can be caused by impact, so that tire burst is caused.
If the tire pressure is too low, the friction coefficient between the tire and the road surface is easily increased, so that the fuel consumption is increased, the steering wheel is heavy, the driving safety is not facilitated, the movement amount of each part of the tire is increased, abnormal heating of the tire is caused by excessive rolling, the functions of the cord and rubber are reduced, delamination or cord breakage is caused, and excessive friction between the cord and a rim is caused to damage the tire bead part. In addition, the friction between the tire and the ground is multiplied, the tire temperature is increased rapidly, the tire is softened and the strength is reduced rapidly, when a vehicle runs at high speed, the tire is easy to burst, or the deformation of the tire body is increased, the tire side is easy to crack, and meanwhile, the flexing motion is generated, so that excessive heating is caused, the rubber aging is promoted, the cord fabric is fatigued, and the cord thread is broken.
Disclosure of Invention
The embodiment of the application provides a control method, a device and a system for vehicle tire pressure and a vehicle, and the method can adjust the tire pressure in real time based on the running environment of the vehicle, so that the safety of the vehicle is improved.
In a first aspect, the present invention provides the following technical solutions through an embodiment of the present invention:
a control method of a tire pressure of a vehicle, comprising:
acquiring running environment information of a vehicle in a running process of the vehicle, wherein the running environment information comprises a current altitude; obtaining a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmospheric static equation; adjusting the tire pressure of the vehicle based on the tire pressure correction value.
Preferably, the running environment information further includes: the obtaining of the tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmosphere static equation further comprises: obtaining a first tire pressure adjustment amount based on the current altitude, the reference altitude of the vehicle and a preset atmosphere static equation; obtaining a second tire pressure adjustment amount based on the current wheel temperature, the reference wheel temperature of the vehicle and a preset ideal gas state equation; and obtaining the tire pressure correction value based on the first tire pressure adjustment amount and the second tire pressure adjustment amount.
Preferably, the running environment information further includes: the obtaining the tire pressure correction value based on the first tire pressure adjustment amount and the second tire pressure adjustment amount according to the current wheel load and the current vehicle speed of the vehicle further includes: looking up a table in a preset database to obtain a third tire pressure adjustment amount based on the current wheel load, the reference wheel load of the vehicle and the current vehicle speed; and accumulating the first tire pressure adjustment amount, the second tire pressure adjustment amount and the third tire pressure adjustment amount to obtain the tire pressure correction value.
Preferably, before obtaining the first tire pressure adjustment amount based on the current altitude, the reference altitude of the vehicle, and a preset static atmosphere equation, the method further includes: and if the difference value between the current altitude and the reference altitude is within a first preset threshold range, obtaining the tire pressure correction value based on the second tire pressure adjustment amount.
Preferably, the first preset threshold range is 0-100 meters.
Preferably, before obtaining the second tire pressure adjustment amount based on the current wheel temperature, the reference wheel temperature of the vehicle, and a preset ideal gas state equation, the method further includes: and if the difference value between the current wheel temperature and the reference wheel temperature is in a second preset threshold range, obtaining the tire pressure correction value based on the first tire pressure adjustment amount.
Preferably, the second preset threshold range is 0-5 ℃.
In a second aspect, the present invention provides the following technical solutions through an embodiment of the present invention:
a control device for a tire pressure of a vehicle, comprising:
the system comprises a driving environment information acquisition module, a driving environment information acquisition module and a driving information processing module, wherein the driving environment information acquisition module is used for acquiring the driving environment information of a vehicle in the driving process of the vehicle, and the driving environment information comprises the current altitude;
the tire pressure correction value acquisition module is used for obtaining a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmosphere static equation;
and the tire pressure adjusting module is used for adjusting the tire pressure of the vehicle based on the tire pressure correction value.
In a third aspect, the present invention provides the following technical solutions through an embodiment of the present invention:
a control system for a tire pressure of a vehicle, comprising: the controller is connected with the positioning device, and the positioning device is used for acquiring the current altitude of the vehicle; the controller is used for obtaining the current altitude, obtaining a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmosphere static equation, and adjusting the tire pressure of the vehicle based on the tire pressure correction value.
In a fourth aspect, the present invention provides the following technical solutions according to an embodiment of the present invention:
a vehicle, comprising: a vehicle body and a vehicle tire pressure control system as set forth in the foregoing third aspect.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the invention, the running environment information of the vehicle, namely the current altitude of the vehicle, is obtained in real time in the running process of the vehicle, so that the tire pressure correction value is obtained based on the variation of the altitude of the vehicle and a preset atmosphere static equation, and then the tire pressure of the vehicle is adjusted based on the tire pressure correction value and the current tire pressure. The method considers the influence of the altitude on the tire pressure of the vehicle, so that when the vehicle runs from a high altitude position to a low altitude position or runs from the low altitude position to the high altitude position, the tire pressure can be adaptively adjusted and controlled within a certain range, so that the tire pressure is adaptive to the altitude.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a flowchart of a control method for a tire pressure of a vehicle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a tire pressure control device for a vehicle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a tire pressure control system of a vehicle according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.
Detailed Description
The inventor finds that when the tire pressure monitoring system in the current market monitors that the tire pressure of a vehicle is too low or too high, the tire pressure monitoring system can remind a driver in different forms, but the lowest and the highest tire pressure threshold values are fixed values, deviation can occur under different driving working conditions, if the driving working conditions change too much, if the driving working conditions change from plateau to plain, the tire pressure monitoring system experiences altitude change, and the tire pressure monitoring system of a common vehicle can not ensure that the vehicle is suitable for all working conditions.
The fixed maximum and minimum tire pressure threshold values are not satisfied with the actual driving condition completely, when the driving condition changes too much, the tire pressure monitoring system may misinformation tire pressure failure, the driving comfort of the driver is affected, or when the actual tire pressure exceeds the optimum tire pressure range suitable for the current situation environment, the tire pressure monitoring system does not report the tire pressure problem, so that the judgment of the driver on the tire pressure is affected, and finally the serious consequence of tire burst may be caused.
In view of this, embodiments of the present application provide a method, an apparatus, a system and a vehicle for controlling a tire pressure of a vehicle, where the method can adjust the tire pressure in real time based on a driving environment of the vehicle, thereby improving safety of the vehicle.
The technical scheme of the embodiment of the application has the following general idea:
a control method of a tire pressure of a vehicle, the method comprising: acquiring running environment information of a vehicle in a running process of the vehicle, wherein the running environment information comprises a current altitude; obtaining a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmospheric static equation; adjusting the tire pressure of the vehicle based on the tire pressure correction value.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
In a first aspect, an embodiment of the present invention provides a method for controlling a tire pressure of a vehicle, specifically, as shown in fig. 1, the method includes the following steps S101 to S103.
Step S101, acquiring running environment information of a vehicle in the running process of the vehicle, wherein the running environment information comprises the current altitude.
And step S102, obtaining a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmosphere static equation.
And step S103, adjusting the tire pressure of the vehicle based on the tire pressure correction value.
In a specific embodiment, the vehicle is equipped with a positioning device for acquiring the current altitude of the vehicle, specifically, the positioning device may be a GPS locator, and the current altitude is acquired in real time based on the GPS locator during the running of the vehicle. And obtaining the tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmospheric static equation. And then, adjusting the tire pressure of the vehicle based on the tire pressure correction value and the current tire pressure, so that the tire pressure of the vehicle is continuously in the optimal tire pressure range.
It should be noted that, if the vehicle is at the initial altitude when the vehicle starts to run and the vehicle has not performed a tire pressure adjustment based on the altitude yet, the reference altitude mentioned in the present application indicates the initial altitude, and if the vehicle starts to run until the tire pressure adjustment has been performed based on the altitude now, the reference altitude mentioned in the present application indicates the current altitude corresponding to the previous tire pressure adjustment.
In particular, the atmosphere static equation is dP＝-ρ(H)gdHI.e., P ═ - ρ (H) gH, where P represents the gas pressure, here tire pressure, ρ (H) is the air density, g is the acceleration of gravity, and H is the altitude. The altitude and the air density have a certain relationship, that is, the air density at different altitudes can be obtained by looking up a table in a predetermined database, and the predetermined database can be a pre-established relationship table of the altitude and the air density. Specifically, the relationship table may be as shown in table 1 below:
TABLE 1 air Density at different altitudes
Assume a reference altitude of H0Current altitude is H1Then, based on the current altitude, the reference altitude of the vehicle, and the preset atmospheric static equation, the tire pressure correction value Δ P is obtainedH＝-g(ρ(H1)H1-ρ(H0)H0)。
Wherein the minus sign indicates: as the altitude rises, the atmospheric pressure is reduced, the tire pressure rises, and at the moment, the tire needs to be decompressed; similarly, when the altitude decreases, the tire pressure will gradually decrease, and at this time, the tire needs to be pressurized.
Assume a reference optimum tire pressure range (i.e., reference altitude H)0Corresponding optimum tire pressure range) is (P)a，Pb) From which it can be calculated, only for variations in altitudeThe current optimal tire pressure range is: (P)a+ΔPH，Pb+ΔPH)。
In another embodiment, in order to not cause continuous variation of the optimal tire pressure range and affect the control stability of the vehicle, the condition for obtaining the tire pressure correction value may be, based on the current altitude, the reference altitude of the vehicle, and the preset static atmosphere equation: the tire pressure of the vehicle is adjusted only when a difference between the current altitude and the initial altitude is greater than a preset threshold. That is, the tire pressure is adjusted only when the change in altitude at which the vehicle is located satisfies a certain condition.
Further, the running environment information may further include: the current wheel temperature of the vehicle obtains a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmosphere static equation, and may further include: obtaining a first tire pressure adjustment amount based on the current altitude, the reference altitude of the vehicle and a preset atmospheric static equation; obtaining a second tire pressure adjustment amount based on the current wheel temperature, the reference wheel temperature of the vehicle and a preset ideal gas state equation; and obtaining a tire pressure correction value based on the first tire pressure adjustment amount and the second tire pressure adjustment amount.
In a specific embodiment, the vehicle is equipped with a temperature detection device for acquiring the current wheel temperature of the vehicle, specifically, the temperature detection device may be a temperature sensor, an infrared thermometer, or the like, which may be disposed at a position close to the wheel, and the current wheel temperature is acquired in real time based on the temperature sensor during the running of the vehicle.
Specifically, the ideal gas state equation is PV ═ nRT, where P represents the gas pressure, here tire pressure, V represents the gas volume, n represents the amount of substance, and is a constant, R represents the ideal gas constant, and T represents the absolute temperature (in K). Since n and R are both constants and the volume V of the gas in the tire does not change, the tire pressure P is related to the absolute temperature T only and is in a proportional relationship.
Assuming an initial wheel temperature of T0Current tire pressure is P0When the vehicle changes to another temperature environment T1Then, the second tire pressure adjustment amount Δ P is obtained based on the current wheel temperature, the reference wheel temperature of the vehicle, and a preset ideal gas state equationT＝-(T1/T0-1)P0。
Wherein, the negative sign indicates that when the temperature rises, the tire pressure will rise, and at the moment, the pressure of the tire needs to be released; similarly, when the temperature decreases, the tire pressure decreases, and at this time, the tire needs to be pressurized.
Optionally, in order not to cause continuous variation of the optimal tire pressure range, before obtaining the first tire pressure adjustment amount based on the current altitude, the reference altitude of the vehicle, and a preset atmospheric static equation, the method may further include: and if the difference value between the current altitude and the reference altitude is within the first preset threshold range, obtaining the tire pressure correction value based on the second tire pressure adjustment amount.
The first preset threshold range may be 0 to 100 meters, that is, before the first tire pressure adjustment amount is obtained, the difference between the current altitude and the reference altitude is compared, and if the difference between the current altitude and the reference altitude is 0 to 100 meters, the influence of the altitude change on the tire pressure may be ignored, and only the change in the wheel temperature needs to be considered.
Of course, the first preset threshold range may be adaptively adjusted as needed, for example: but also 0-200 meters, 0-300 meters, etc., and the application is not limited.
Assume that the reference optimum tire pressure range is (P)a，Pb) From this, it can be calculated that, for only a change in the wheel temperature, the current optimum tire pressure is: (P)a+ΔPH，Pb+ΔPH)。
Optionally, before obtaining the second tire pressure adjustment amount based on the current wheel temperature, the reference wheel temperature of the vehicle, and a preset ideal gas state equation, in order not to cause continuous variation of the optimum tire pressure range, the method further includes: and if the difference value between the current wheel temperature and the reference wheel temperature is within a second preset threshold range, obtaining a tire pressure correction value based on the first tire pressure adjustment amount.
The second preset threshold range may be 0 to 5 ℃, that is, before the second tire pressure adjustment amount is obtained, the difference between the current wheel temperature and the reference wheel temperature is compared, and when the difference between the current wheel temperature and the reference wheel temperature is 0 to 5 ℃, the influence of the wheel temperature change on the tire pressure may be ignored, and only the altitude change needs to be considered. Of course, the second preset threshold range may be adaptively adjusted as needed, for example: but also 0-8 ℃, 0-10 ℃ and the like, and the application is not limited.
Therefore, the tire pressure can be adjusted based on the first tire pressure adjustment amount and the second tire pressure adjustment amount only when the altitude change and the wheel temperature change of the vehicle meet corresponding conditions. When the altitude change is in a first preset threshold range, namely the adjustment requirement is not met, and the wheel temperature change is not in a second preset threshold range, namely the adjustment requirement is met, adjusting the tire pressure based on a second tire pressure adjustment amount; when the altitude change is not in the first preset threshold range, namely the adjustment requirement is met, and the wheel temperature change is in the second preset threshold range, namely the adjustment requirement is not met, the tire pressure is adjusted based on the first tire pressure adjustment amount.
Further, the running environment information may further include: the tire pressure correction value is obtained based on the first tire pressure adjustment amount and the second tire pressure adjustment amount, and the method further includes: looking up a table in a preset database to obtain a third tire pressure adjustment quantity based on the current wheel load, the reference wheel load of the vehicle and the current vehicle speed; and accumulating the first tire pressure adjustment amount, the second tire pressure adjustment amount and the third tire pressure adjustment amount to obtain a tire pressure correction value.
In a specific embodiment, the vehicle is equipped with a pressure detection device for acquiring a wheel load of the vehicle, specifically, the pressure detection device may be a pressure sensor, a liquid column pressure detector, or the like, based on which the wheel load is acquired in real time during the running of the vehicle. In addition, the vehicle speed of the vehicle may be obtained based on the vehicle control unit.
Specifically, the tire pressure Δ P to be regulated at different vehicle speeds and under different loads can be obtained by looking up a table in a preset databaseQVThe preset database may be a table of relationships among the vehicle speed, the wheel load change, and the third tire pressure adjustment amount, which are previously established. Specifically, the relationship table may be as shown in table 2 below:
TABLE 2 speed/load Change/third tire pressure adjustment relationship
It should be noted that the meanings expressed in table 2 are: when the vehicle speed is increased to 80km/h and the load is changed to + 2.5% to + 150%, the corresponding third tire pressure adjustment amount is + 1% to + 40%; when the vehicle speed is increased to 90km/h from 80km/h and the load is changed to + 2% to + 150%, the corresponding third tire pressure adjusting amount is + 1% to + 40%; when the vehicle speed is increased to 100km/h from 90km/h and the load change is + 1% to + 150%, the corresponding third tire pressure adjustment amount is + 1% to + 40%, and so on.
Based on the preset database, the vehicle speed V can be obtained when the vehicle is converted to another vehicle speed V1Change of wheel load to Q1Then, the third tire pressure adjustment amount caused by the vehicle speed and load change is: delta PQV。
Specifically, the change in the wheel load is obtained based on the current wheel load and the reference wheel load, and the third tire pressure adjustment amount at the current vehicle speed and the change amount of the wheel load is obtained by looking up table 2. As shown in table 2, if the current vehicle speed is 30km/h and the load change is + 15%, the third tire pressure adjustment amount is + 10%; if the current vehicle speed is 85km/h and the load change is + 15%, the third tire pressure adjustment amount is + 10%; if the current vehicle speed is 85km/h and the load change is + 2%, the third tire pressure adjustment amount is 0.
Specifically, the first tire pressure adjustment amount, the second tire pressure adjustment amount, and the third tire pressure adjustment amount are accumulated to obtain a tire pressure correction value, which may specifically be: and summing the first tire pressure adjustment amount, the second tire pressure adjustment amount and the third tire pressure adjustment amount to obtain a tire pressure correction value. That is, assume that the reference optimum tire pressure range is (P)a，Pb) From this, it can be calculated that, for changes in altitude, wheel temperature, wheel load, and vehicle speed, the current optimal tire pressure is: (P)a+ΔPT+ΔPH+ΔPQV，Pb+ΔPT+ΔPH+ΔPQV)。
Of course, as another embodiment, the first tire pressure adjustment amount, the second tire pressure adjustment amount, and the third tire pressure adjustment amount are added to obtain the tire pressure correction value, and the tire pressure correction value may also be: and performing weighted accumulation on the first tire pressure adjustment amount, the second tire pressure adjustment amount and the third tire pressure adjustment amount to obtain a tire pressure correction value. For example, the weighted accumulation may be: and summing the first tire pressure adjustment amount, the second tire pressure adjustment amount and the third tire pressure adjustment amount, and multiplying the sum by a corresponding tire pressure adjustment coefficient to obtain a tire pressure correction value, wherein the pressure adjustment coefficient can be designed as required or can be obtained in other weighting and accumulating modes.
According to the method and the device, the optimal tire pressure range in which each wheel is supposed to be under the current driving working condition can be calculated in real time according to the actual tire temperature, the altitude of the wheel, the vehicle speed and the change of the wheel load, and closed-loop control is performed according to the current actual tire pressure. Further, in order to not frequently change the optimum range of the tire pressure, each running environment information is controlled to adjust the tire pressure range after exceeding a certain value.
Specifically, when a large change in the driving environment is monitored, if the current actual tire pressure is not within the optimal tire pressure range, the tire pressure can be adjusted in real time through the original pressurization/pressure relief device of the vehicle, so that the tire pressure is continuously within the optimal range. The method does not need to remind a driver to complete tire pressure adjustment, but directly carries out adaptive adjustment according to environmental changes, so that the driver can be prevented from dispersing attention due to the fact that the driver needs to adjust the tire pressure, worry of the driver about the tire pressure is avoided, and driving safety is guaranteed.
In summary, the method for controlling the tire pressure of the vehicle provided by the application can obtain the optimal range in which the tire pressure should be located through calculation when the driving environment of the vehicle changes, so that the tire pressure can be adaptively and automatically adjusted, the tire pressure is controlled within a certain range, the method improves the safety of the vehicle, effectively avoids the influence of different degrees on the vehicle caused by overhigh or overlow tire pressure due to the change of the environment, and further improves the comfort of passengers.
In a second aspect, based on the same inventive concept, the present embodiment provides a control device for a tire pressure of a vehicle, as shown in fig. 2, comprising:
a driving environment information obtaining module 401, configured to obtain driving environment information of a vehicle during a driving process of the vehicle, where the driving environment information includes a current altitude;
a tire pressure correction value obtaining module 402, configured to obtain a tire pressure correction value based on the current altitude, the reference altitude of the vehicle, and a preset atmosphere static equation;
an air pressure adjusting module 403, configured to adjust the air pressure of the vehicle based on the air pressure correction value.
As an alternative embodiment, the driving environment information further includes: the current wheel temperature of the vehicle and the tire pressure correction value obtaining module 402 are specifically configured to:
obtaining a first tire pressure adjustment amount based on the current altitude, the reference altitude of the vehicle and a preset atmospheric static equation; obtaining a second tire pressure adjustment amount based on the current wheel temperature, the reference wheel temperature of the vehicle and a preset ideal gas state equation; and obtaining a tire pressure correction value based on the first tire pressure adjustment amount and the second tire pressure adjustment amount.
As an alternative embodiment, the driving environment information further includes: the tire pressure correction value obtaining module 402 is further specifically configured to:
looking up a table in a preset database to obtain a third tire pressure adjustment amount based on the current wheel load, the reference wheel load of the vehicle and the current vehicle speed; and accumulating the first tire pressure adjustment amount, the second tire pressure adjustment amount and the third tire pressure adjustment amount to obtain a tire pressure correction value.
As an optional embodiment, the tire pressure correction value obtaining module 402 is further specifically configured to: and if the difference value between the current altitude and the reference altitude is within the first preset threshold range, obtaining the tire pressure correction value based on the second tire pressure adjustment amount.
As an alternative embodiment, the first preset threshold range is 0-100 meters.
As an optional embodiment, the tire pressure correction value obtaining module 402 is further specifically configured to: and if the difference value between the current wheel temperature and the reference wheel temperature is within a second preset threshold range, obtaining a tire pressure correction value based on the first tire pressure adjustment amount.
As an alternative embodiment, the second predetermined threshold range is 0-5 ℃.
The above modules may be implemented by software codes, and in this case, the modules may be stored in a memory of the control device. The above modules may also be implemented by hardware, such as an integrated circuit chip.
The implementation principle and the generated technical effects of the control device for the tire pressure of the vehicle provided by the embodiment of the invention are the same as those of the embodiment of the method, and for the sake of brief description, the corresponding contents in the embodiment of the method can be referred to where the embodiment of the device is not mentioned.
In a third aspect, based on the same inventive concept, as shown in fig. 3, the present embodiment provides a control system for a tire pressure of a vehicle, including: a controller 101 and a positioning device 102, wherein the controller 101 is connected with the positioning device 102, and the positioning device 102 is used for acquiring the current altitude of the vehicle.
The controller 101 is configured to obtain a current altitude, and obtain a tire pressure correction value based on the current altitude, a reference altitude of the vehicle, and a preset atmosphere static equation, so as to adjust the tire pressure of the vehicle based on the tire pressure correction value.
As an alternative embodiment, the system further comprises: the temperature detection device 103 is connected with the controller 101, and the temperature detection device 103 is used for acquiring the current wheel temperature of the vehicle.
The controller 101 is further configured to obtain a first tire pressure adjustment amount based on the current altitude, a reference altitude of the vehicle, and a preset atmospheric static equation; obtaining a second tire pressure adjustment amount based on the current wheel temperature, the reference wheel temperature of the vehicle and a preset ideal gas state equation; and obtaining a tire pressure correction value based on the first tire pressure adjustment amount and the second tire pressure adjustment amount.
As an alternative embodiment, the system further comprises: and a pressure detection device 104, wherein the pressure detection device 104 is connected with the controller 101, and the pressure detection device 104 is used for acquiring the current wheel load of the vehicle.
The controller 101 is further configured to look up a table in a preset database to obtain a third tire pressure adjustment amount based on the current wheel load, the reference wheel load of the vehicle, and the current vehicle speed; and accumulating the first tire pressure adjustment amount, the second tire pressure adjustment amount and the third tire pressure adjustment amount to obtain a tire pressure correction value.
The implementation principle and the generated technical effects of the control system for the tire pressure of the vehicle provided by the embodiment of the invention are the same as those of the embodiment of the method, and for the sake of brief description, no part of the embodiment of the system is mentioned, and reference may be made to the corresponding contents in the embodiment of the method.
In a fourth aspect, based on the same inventive concept, the present embodiment provides a vehicle 500, as shown in fig. 4, comprising a vehicle body 502 and the vehicle tire pressure control system 501 of the third aspect.
Since the control system for tire pressure of a vehicle included in the vehicle according to the embodiment of the present invention has been described in the foregoing, based on the control system for tire pressure of a vehicle described in the embodiment of the present invention, a person skilled in the art can understand the specific structure and effect principle of the vehicle, and details are not described herein again. All vehicles including the tire pressure control system of the vehicle according to the embodiment of the invention belong to the protection scope of the invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A control method of a tire pressure of a vehicle, characterized by comprising:
acquiring running environment information of a vehicle in a running process of the vehicle, wherein the running environment information comprises a current altitude;
obtaining a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmospheric static equation;
adjusting the tire pressure of the vehicle based on the tire pressure correction value.
2. The method of claim 1, wherein the driving environment information further comprises: the obtaining of the tire pressure correction value based on the current altitude, the reference altitude of the vehicle, and a preset atmosphere static equation further includes:
obtaining a first tire pressure adjustment amount based on the current altitude, the reference altitude of the vehicle and a preset atmosphere static equation;
obtaining a second tire pressure adjustment amount based on the current wheel temperature, the reference wheel temperature of the vehicle and a preset ideal gas state equation;
and obtaining the tire pressure correction value based on the first tire pressure adjustment amount and the second tire pressure adjustment amount.
3. The method of claim 2, wherein the driving environment information further comprises: the obtaining the tire pressure correction value based on the first tire pressure adjustment amount and the second tire pressure adjustment amount according to the current wheel load and the current vehicle speed of the vehicle further includes:
looking up a table in a preset database to obtain a third tire pressure adjustment amount based on the current wheel load, the reference wheel load of the vehicle and the current vehicle speed;
and accumulating the first tire pressure adjustment amount, the second tire pressure adjustment amount and the third tire pressure adjustment amount to obtain the tire pressure correction value.
4. The method of claim 2, wherein prior to deriving the first tire pressure adjustment based on the current altitude, a reference altitude of the vehicle, and a preset static atmosphere equation, the method further comprises:
and if the difference value between the current altitude and the reference altitude is within a first preset threshold range, obtaining the tire pressure correction value based on the second tire pressure adjustment amount.
5. The method of claim 4, wherein the first predetermined threshold range is 0-100 meters.
6. The method of claim 2, wherein before deriving the second tire pressure adjustment amount based on the current wheel temperature, the reference wheel temperature of the vehicle, and a preset ideal gas state equation, the method further comprises:
and if the difference value between the current wheel temperature and the reference wheel temperature is in a second preset threshold range, obtaining the tire pressure correction value based on the first tire pressure adjustment amount.
7. The method of claim 6, wherein the second predetermined threshold range is 0-5 ℃.
8. A control device for a tire pressure of a vehicle, characterized by comprising:
the system comprises a driving environment information acquisition module, a driving environment information acquisition module and a driving information processing module, wherein the driving environment information acquisition module is used for acquiring the driving environment information of a vehicle in the driving process of the vehicle, and the driving environment information comprises the current altitude;
the tire pressure correction value acquisition module is used for obtaining a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmosphere static equation;
and the tire pressure adjusting module is used for adjusting the tire pressure of the vehicle based on the tire pressure correction value.
9. A control system for tire pressure of a vehicle, comprising: the controller is connected with the positioning device, and the positioning device is used for acquiring the current altitude of the vehicle;
the controller is used for obtaining the current altitude, obtaining a tire pressure correction value based on the current altitude, the reference altitude of the vehicle and a preset atmosphere static equation, and adjusting the tire pressure of the vehicle based on the tire pressure correction value.
10. A vehicle, characterized by comprising: a vehicle body and a vehicle tire pressure control system as claimed in claim 9.
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| CN202210121165.9A CN114506187A (en) | 2022-02-09 | 2022-02-09 | Vehicle tire pressure control method, device and system and vehicle |
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