CN115302992A - Indirect monitoring method and device for vehicle tire temperature, vehicle and storage medium - Google Patents
Indirect monitoring method and device for vehicle tire temperature, vehicle and storage medium Download PDFInfo
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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
- B60C23/20—Devices for measuring or signalling tyre temperature only
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Abstract
The application discloses vehicle tire temperature indirect monitoring method, device, vehicle and storage medium, wherein the method comprises the following steps: acquiring an actual temperature value of an environment where a vehicle is located, and acquiring the duration of the current ignition cycle of the vehicle; calculating the temperature rise of the tire according to the movement duration of the duration, and calculating the first temperature drop of the tire according to the rest duration of the duration; and calculating a first actual temperature value of the vehicle tire in the current ignition cycle according to the actual temperature value, the temperature rise and the first temperature drop. Therefore, the technical problems that in the related art, the cost of direct tire temperature monitoring is high, and cost and usability cannot be considered are solved.
Description
Technical Field
The application relates to the technical field of tire temperature measurement, in particular to an indirect monitoring method and device for vehicle tire temperature, a vehicle and a storage medium.
Background
When the automobile runs, the tires continuously contact with the ground to generate friction force, so that the running direction, speed and the like of the automobile are influenced, and when the automobile runs under the condition of high temperature or high road surface temperature, the temperature of the tires is too high, the tires are blown out, and great potential safety hazards exist.
The tire temperature monitoring system in the related art adopts a direct tire temperature monitoring method, namely, a driver is informed of the accurate temperature value of the current tire through a data sending and receiving module based on a temperature sensor arranged on the tire, so that the accurate tire temperature is rapidly displayed, and the tire temperature monitoring system has obvious advantages in the aspects of monitoring speed and accuracy.
However, the cost of the related art is difficult to control, the price is expensive in mass production of vehicle models, and the specific temperature value in the direct tire temperature monitoring system is not available to the driver, so that the cost and the availability cannot be both achieved, and improvement is needed.
Disclosure of Invention
The application provides a vehicle tire temperature indirect monitoring method, a vehicle tire temperature indirect monitoring device, a vehicle and a storage medium, and aims to solve the technical problems that in the related technology, the cost of direct tire temperature monitoring is high, and cost and usability cannot be considered.
An embodiment of a first aspect of the present application provides a method for indirectly monitoring a temperature of a vehicle tire, including the following steps: acquiring an actual temperature value of an environment where a vehicle is located, and acquiring the duration of the current ignition cycle of the vehicle; calculating the temperature rise of the tire according to the movement duration of the duration, and calculating the first temperature drop of the tire according to the rest duration of the duration; and calculating a first actual temperature value of the vehicle tire in the current ignition cycle according to the actual temperature value, the temperature rise and the first temperature drop.
Optionally, in an embodiment of the present application, the method further includes: acquiring a second temperature drop of the static duration after the vehicle is powered off or flameout; and calculating a second actual temperature value of the vehicle tire after the current ignition period and power-off or flameout according to the actual temperature value, the temperature rise, the first temperature drop and the second temperature drop.
Optionally, in an embodiment of the present application, wherein the calculation formula of the first actual temperature value is:
the calculation formula of the second actual temperature value is as follows:
wherein, T env Is the value of the actual temperature, and,
is said first actual temperature value, T tire Is said second actual temperature value, T rise In order for the temperature to rise, the temperature,
in order to achieve said first temperature drop,
is the second temperature drop.
Optionally, in an embodiment of the present application, after calculating the second actual temperature value of the vehicle tire, the method further includes: judging whether the second actual temperature value is lower than the actual temperature value; and if the second actual temperature value is lower than the actual temperature value, taking the actual temperature value as the second actual temperature value.
Optionally, in an embodiment of the present application, before calculating the first actual temperature value and the second actual temperature value, the method further includes: and acquiring a relationship table of the movement time length-temperature rise, a relationship table of the first static time length-first temperature drop and a relationship table of the second static time length-second temperature drop.
The embodiment of the second aspect of the application provides a vehicle tire temperature indirect monitoring method device, which comprises the following steps: the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring an actual temperature value of an environment where a vehicle is located and acquiring the duration of a current ignition cycle of the vehicle; the first calculation module is used for calculating the temperature rise of the tire according to the movement duration of the duration and calculating the first temperature drop of the tire according to the static duration of the duration; and the second calculation module is used for calculating a first actual temperature value of the vehicle tire in the current ignition period according to the actual temperature value, the temperature rise and the first temperature drop.
Optionally, in an embodiment of the present application, the method further includes: the first acquisition module is used for acquiring a second temperature drop of the static duration after the vehicle is powered off or flameout; and the third calculation module is used for calculating a second actual temperature value of the vehicle tire in the current ignition period and after power-off or flameout according to the actual temperature value, the temperature rise, the first temperature drop and the second temperature drop.
Optionally, in an embodiment of the present application, a calculation formula of the first actual temperature value is:
the calculation formula of the second actual temperature value is as follows:
wherein, T env Is the value of the actual temperature, and,
is the first actual temperature value, T tire Is said second actual temperature value, T rise In order for the temperature to rise, the temperature,
in order to achieve said first temperature drop,
is the second temperature drop.
Optionally, in an embodiment of the present application, the third calculating module is further configured to determine whether the second actual temperature value is lower than the actual temperature value; and if the second actual temperature value is lower than the actual temperature value, taking the actual temperature value as the second actual temperature value.
Optionally, in an embodiment of the present application, the method further includes: and the second acquisition module is used for acquiring a relationship table of the movement duration-temperature rise, a relationship table of the first rest duration-first temperature drop and a relationship table of the second rest duration-second temperature drop.
An embodiment of a third aspect of the present application provides a vehicle, comprising: the device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the indirect monitoring method for the temperature of the vehicle tire according to the embodiment.
A fourth aspect of the present application provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements the indirect vehicle tire temperature monitoring method as described above.
The embodiment of the application can correct and calculate the serialized tire temperature based on the acquired actual temperature value of the environment where the vehicle is located and the ignition period information of the vehicle, finally obtains the estimated value of the tire temperature of the vehicle, does not need to additionally add a sensor, reduces the cost, and simultaneously greatly improves the accuracy of the under-voltage identification of indirect tire pressure monitoring, so that the accuracy of the tire temperature estimation result is high, and the real-time requirement can be met. Therefore, the technical problems that in the related art, the cost of direct tire temperature monitoring is high, and cost and usability cannot be considered are solved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
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The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method for indirectly monitoring the temperature of a vehicle tire according to an embodiment of the present application;
FIG. 2 is a schematic view of a time duration of movement versus temperature rise of an indirect method of monitoring vehicle tire temperature according to one embodiment of the present application;
FIG. 3 is a schematic illustration of a first rest period versus a first temperature drop for an indirect method of monitoring vehicle tire temperature according to one embodiment of the present application;
FIG. 4 is a graphical illustration of a second resting interval versus a second temperature drop for a method of indirectly monitoring the temperature of a vehicle tire according to one embodiment of the subject application;
FIG. 5 is a flow chart of a method for indirect monitoring of vehicle tire temperature according to one embodiment of the present application;
FIG. 6 is a schematic structural diagram of an indirect monitoring device for vehicle tire temperature according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a vehicle according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The following describes a method, an apparatus, a vehicle, and a storage medium for indirectly monitoring the temperature of a tire of a vehicle according to embodiments of the present application with reference to the drawings. In order to solve the technical problems that the cost of direct tire temperature monitoring is high and the cost and the usability cannot be considered in the related technology mentioned in the background technology center, the application provides an indirect vehicle tire temperature monitoring method. Therefore, the technical problems that in the related art, the cost of direct tire temperature monitoring is high, and cost and usability cannot be considered are solved.
Specifically, fig. 1 is a schematic flow chart of an indirect monitoring method for a vehicle tire temperature according to an embodiment of the present disclosure.
As shown in fig. 1, the indirect monitoring method for the temperature of the vehicle tire comprises the following steps:
in step S101, an actual temperature value of an environment where the vehicle is located is collected, and a duration of a current ignition cycle of the vehicle is obtained.
In the actual implementation process, the basic value of the tire temperature can be obtained, for example, the ambient temperature sensor can be used for acquiring ambient temperature information around the vehicle in real time in the normal running process of the vehicle.
It can be understood that the tire generates heat due to friction with the road surface in the running process, so that the environment temperature information cannot directly reflect the temperature of the tire of the vehicle.
Further, the duration of the current ignition cycle of the vehicle can be obtained, wherein the current ignition cycle can refer to a process from ignition/power-on of the vehicle to flameout/power-off of the vehicle by the driver at this time; the duration of the current ignition cycle may indicate a time that the vehicle is in an ignition state, reflecting a total duration of the current ignition cycle of the vehicle, wherein the duration of the current ignition cycle may include a movement duration T move And a rest duration T static 。
In step S102, a temperature rise of the tire is calculated based on the length of movement of the duration and a first temperature drop of the tire is calculated based on the length of rest of the duration.
As will be appreciated by those skilled in the art, the more miles traveled by the vehicle during the current ignition cycle,it can be shown that the longer the distance the vehicle is moving, the longer the distance the tyre is rubbing against the ground, resulting in a constantly increasing tyre temperature, while the movement duration T in the duration of the current ignition cycle move The movement of the vehicle may cause the tires to generate heat, and the vehicle is at rest for a period of time T static The temperature of the tire will slowly drop when the ignition is turned on, so that the embodiment of the application can move for a time period T according to the duration of the current ignition cycle move Calculating the temperature rise of the tyre and the rest time T according to the duration static A first temperature drop of the tire is calculated.
In step S103, a first actual temperature value of the vehicle tire at the current ignition cycle is calculated from the actual temperature value, the temperature rise, and the first temperature drop.
As a possible implementation manner, the embodiment of the application can be used for controlling the movement duration T according to the actual temperature value of the environment where the vehicle is located and the duration of the current ignition cycle move Calculating the temperature rise of the tyre and the rest time T from the duration static The first temperature drop of the tire is calculated, and the first actual temperature value of the vehicle tire in the current ignition period is calculated, so that indirect temperature estimation of the tire is realized under the condition that an additional sensor is not needed, the current temperature of the tire is conveniently monitored, the accuracy of temperature estimation is improved, and the cost and the practicability are considered.
Optionally, in an embodiment of the present application, the method further includes: acquiring a second temperature drop of the static duration after the vehicle is powered off or flameout; and calculating a second actual temperature value of the vehicle tire after the current ignition period and the power-off or flameout according to the actual temperature value, the temperature rise, the first temperature drop and the second temperature drop.
In the actual implementation process, the vehicle powering-off/flameout rest time can reflect the time length of the vehicle stopping at powering-off/flameout, the temperature of the tires of the vehicle can slowly drop in the time length, and when the powering-off/flameout stop time length is longer, the temperature of the tires of the vehicle finally tends to the external environment temperature.
The embodiment of the application can be used for controlling the movement duration T according to the actual temperature value of the environment where the vehicle is located and the duration of the current ignition cycle move Computing wheelTemperature rise of the tyre, duration of rest T from duration static And calculating a first temperature drop of the tire and a second temperature drop of the vehicle during powering off or resting time after flameout, and calculating a second actual temperature value of the vehicle tire during the current ignition period and powering off or flameout.
Optionally, in an embodiment of the present application, wherein the calculation formula of the first actual temperature value is:
the calculation formula of the second actual temperature value is as follows:
wherein, T env Is a value of the actual temperature which is,
is a first actual temperature value, T tire Is a second actual temperature value, T rise In order to increase the temperature of the mixture,
in order to achieve the first temperature drop,
the second temperature drop.
In some embodiments, the second actual temperature value, i.e., the final desired vehicle tire temperature estimate, may be denoted as T tire Temperature rise, i.e. the temperature rise of the tyre as a result of running during the ignition cycle of the vehicle, is T rise The first temperature drop, i.e. the drop in tyre temperature caused by the vehicle standing during the ignition cycle, is of the order of magnitude
The second temperature drop, i.e. the drop in tyre temperature caused by the vehicle standing after power-off/shut-off, is
Further, the calculation formula of the estimated value of the tire temperature in the current ignition cycle of the vehicle, i.e. the first actual temperature value, may be as follows:
final temperature estimate of the tyre, i.e. second actual temperature value T tire The calculation formula of (c) may be as follows:
optionally, in an embodiment of the present application, before calculating the first actual temperature value and the second actual temperature value, the method further includes: and acquiring a relationship table of the movement time length-temperature rise, a relationship table of the first static time length-first temperature drop and a relationship table of the second static time length-second temperature drop.
In the actual implementation process, the temperature rise of the tire caused by running in the vehicle ignition period in the embodiment of the present application can be obtained by looking up a relationship table of the motion duration and the temperature rise, such as a temperature rise value-time curve shown in fig. 2, where curve data can be obtained by accumulating in actual vehicle test of the current tire and vehicle type.
In the embodiment of the present application, the tire temperature drop value caused by the vehicle being stationary in the ignition cycle may be obtained by looking up a relationship table between the first stationary time and the first temperature drop, such as a temperature drop absolute value-time curve shown in fig. 3, where the curve data may be obtained by accumulating in actual vehicle test of the current tire and vehicle model.
In the embodiment of the present application, the tire temperature drop value caused by vehicle standstill after power-off/shut down may be obtained by looking up a relationship table manner of the second standstill time duration and the second temperature drop, such as a temperature drop absolute value-time curve shown in fig. 4, where curve data may be obtained by accumulating in current tire and vehicle model real vehicle test.
Optionally, in an embodiment of the present application, after calculating the second actual temperature value of the vehicle tire, the method further includes: judging whether the second actual temperature value is lower than the actual temperature value; and if the second actual temperature value is lower than the actual temperature value, taking the actual temperature value as the second actual temperature value.
As a possible implementation manner, in the embodiment of the present application, after calculating the second actual temperature value of the tire of the vehicle, the second actual temperature value may be determined, when the second actual temperature value is lower than the actual temperature value of the environment where the vehicle is located, the tire temperature of the vehicle may finally tend to the external environment temperature because the vehicle is powered off/stalled for a long time, and in addition, the vehicle may also tend to the external environment temperature because of temperature rise during driving, so when the second actual temperature value is lower than the actual temperature value, the embodiment of the present application may use the actual temperature value as the second actual temperature value, that is, T tire ＝T env 。
The method for indirectly monitoring the temperature of the tire of the vehicle according to the embodiment of the present application is described in detail with reference to fig. 5.
As shown in fig. 5, the embodiment of the present application may include the following steps:
step S501: the ambient temperature is collected. In the actual implementation process, the base value of the tire temperature can be obtained, for example, the ambient temperature sensor can be used for collecting ambient temperature information around the vehicle in real time in the normal running process of the vehicle.
It can be understood that the tire generates heat due to friction with the road surface in the running process, so that the environment temperature information cannot directly reflect the temperature of the tire of the vehicle.
Step S502: the vehicle stationary duration for the current ignition cycle. Further, the duration of the current ignition cycle of the vehicle may also be obtained in the embodiment of the present application, where the current ignition cycle may refer to the period from ignition/power-on of the vehicle to flameout/power-off of the vehicle by the driver at this timeThe process is carried out; the duration of the current ignition cycle may indicate a time that the vehicle is in an ignition state, reflecting a total duration of the current ignition cycle of the vehicle, wherein the duration of the current ignition cycle may include a movement duration T move And a rest duration T static 。
Length of time T when vehicle is at rest static The temperature of the tire will slowly drop when the ignition is turned on, so that the embodiment of the application can obtain the static time length T according to the duration of the current ignition period static A first temperature drop of the tire is calculated.
Step S503: the mileage traveled for the current ignition cycle.
Step S504: the current ignition cycle duration. The more mileage s the vehicle travels in the current ignition cycle, the longer the distance the vehicle moves, the longer the distance the tire rubs against the ground, resulting in a continuously rising tire temperature, and the movement duration T in the duration of the current ignition cycle move The movement of the vehicle can cause the tire to generate a heating phenomenon, and the embodiment of the application can be used for generating the movement duration T according to the duration of the current ignition period move The temperature rise of the tire was calculated.
Step S505: vehicle power off/flame off rest duration. In actual implementation, the vehicle powering-off/flameout rest time may reflect the time period during which the vehicle is powered off/flameout parked, during which the vehicle tire temperature may slowly decrease, and when the powering-off/flameout parking time is longer, the vehicle tire temperature may eventually approach the ambient temperature.
Step S506: the calculation is based on established mathematical formulas. In some embodiments, the second actual temperature value, i.e., the final desired vehicle tire temperature estimate, may be denoted as T tire Temperature rise, i.e. the temperature rise of the tyre as a result of running during the ignition cycle of the vehicle, is T rise The first temperature drop, i.e. the drop in tyre temperature caused by the vehicle standing during the ignition cycle, is of the order of magnitude
The second temperature drop, i.e. the drop in tire temperature caused by the vehicle standing after power-down/shut-off, is
Further, the calculation formula of the estimated tire temperature value in the current ignition cycle of the vehicle, i.e. the first actual temperature value, may be as follows:
step S507: a current ignition cycle tire temperature estimate. The embodiment of the application can be used for controlling the motion duration T according to the actual temperature value of the environment where the vehicle is located and the duration of the current ignition cycle move Calculating the temperature rise of the tyre, the length of rest time T from the length of time of duration static And calculating a first temperature drop of the tire and a second temperature drop of the vehicle during powering off or resting time after flameout, and calculating a second actual temperature value of the vehicle tire during the current ignition period and powering off or flameout.
Step S508: the tire temperature estimate at the current time. The calculation formula of the second actual temperature value is:
wherein the tire temperature estimated value T is obtained when calculating tire Sub-ambient temperature T env The method comprises the following steps:
T tire ＝T env 。
according to the vehicle tire temperature indirect monitoring method provided by the embodiment of the application, the serialized tire temperature can be corrected and calculated based on the acquired actual temperature value of the environment where the vehicle is located and the ignition period information of the vehicle, the estimated value of the vehicle tire temperature is finally obtained, a sensor does not need to be additionally added, the cost is reduced, meanwhile, the accuracy of the under-pressure identification of the indirect tire pressure monitoring is greatly improved, the accuracy of the tire temperature estimated result is high, and the real-time requirement can be met. Therefore, the technical problems that in the related art, the cost of direct tire temperature monitoring is high, and cost and usability cannot be considered are solved.
The following describes a proposed vehicle tire temperature indirect monitoring device according to an embodiment of the present application with reference to the drawings.
FIG. 6 is a block diagram of an indirect vehicle tire temperature monitoring device according to an embodiment of the present application.
As shown in fig. 6, the indirect vehicle tire temperature monitoring device 10 includes: an acquisition module 100, a first calculation module 200 and a second calculation module 300.
Specifically, the acquisition module 100 is configured to acquire an actual temperature value of an environment where the vehicle is located, and acquire a duration of a current ignition cycle of the vehicle.
The first calculating module 200 is configured to calculate a temperature rise of the tire according to the movement duration of the duration, and calculate a first temperature drop of the tire according to the rest duration of the duration.
The second calculating module 300 is configured to calculate a first actual temperature value of the vehicle tire in the current ignition cycle according to the actual temperature value, the temperature rise, and the first temperature drop.
Optionally, in an embodiment of the present application, the indirect vehicle tire temperature monitoring device 10 further includes: the device comprises a first acquisition module and a third calculation module.
The first obtaining module is used for obtaining a second temperature drop of the vehicle in the power-off state or the rest time length after flameout.
And the third calculation module is used for calculating a second actual temperature value of the vehicle tire in the current ignition period and after power-off or flameout according to the actual temperature value, the temperature rise, the first temperature drop and the second temperature drop.
Optionally, in an embodiment of the present application, wherein the calculation formula of the first actual temperature value is:
the calculation formula of the second actual temperature value is:
wherein, T env Is a value of the actual temperature which is,
is a first actual temperature value, T tire Is a second actual temperature value, T rise In order to increase the temperature of the mixture,
in order to achieve the first temperature drop,
the second temperature drop.
Optionally, in an embodiment of the present application, the third calculating module is further configured to determine whether the second actual temperature value is lower than the actual temperature value; and if the second actual temperature value is lower than the actual temperature value, taking the actual temperature value as the second actual temperature value.
Optionally, in an embodiment of the present application, the indirect vehicle tire temperature monitoring device 10 further includes: and a second obtaining module.
The second obtaining module is used for obtaining a relationship table of the movement duration-temperature rise, a relationship table of the first static duration-first temperature drop and a relationship table of the second static duration-second temperature drop.
It should be noted that the foregoing explanation of the embodiment of the method for indirectly monitoring the temperature of the tire of the vehicle also applies to the device for indirectly monitoring the temperature of the tire of the vehicle of this embodiment, and is not repeated herein.
According to the indirect formula monitoring devices of vehicle tire temperature that this application embodiment provided, can be based on the actual temperature value of the vehicle environment that gathers to and the ignition cycle information of vehicle self, carry out the correction and the calculation of serialized tire temperature, finally obtain the estimated value of vehicle tire temperature, need not additionally to add the sensor, reduce cost, promote the accuracy of the under-voltage discernment of indirect formula tire pressure monitoring by a wide margin simultaneously, make the tire temperature estimation result rate of accuracy high, can satisfy the real-time requirement. Therefore, the technical problems that in the related art, the cost of direct tire temperature monitoring is high, and cost and usability cannot be considered are solved.
Fig. 7 is a schematic structural diagram of a vehicle according to an embodiment of the present application. The vehicle may include:
The processor 702, when executing the program, implements the indirect vehicle tire temperature monitoring method provided in the above-described embodiments.
Further, the vehicle further includes:
a communication interface 703 for communication between the memory 701 and the processor 702.
A memory 701 for storing computer programs operable on the processor 702.
The memory 701 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
If the memory 701, the processor 702 and the communication interface 703 are implemented independently, the communication interface 703, the memory 701 and the processor 702 may be connected to each other through a bus and perform communication with each other. The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
Alternatively, in specific implementation, if the memory 701, the processor 702, and the communication interface 703 are integrated on one chip, the memory 701, the processor 702, and the communication interface 703 may complete mutual communication through an internal interface.
The processor 702 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present Application.
The present embodiment also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above indirect monitoring method for vehicle tire temperature.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or N executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or N wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are well known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer-readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.
Claims (12)
1. An indirect monitoring method for the temperature of vehicle tires is characterized by comprising the following steps:
acquiring an actual temperature value of an environment where a vehicle is located, and acquiring duration of a current ignition cycle of the vehicle;
calculating the temperature rise of the tire according to the movement duration of the duration, and calculating the first temperature drop of the tire according to the rest duration of the duration; and
and calculating a first actual temperature value of the vehicle tire in the current ignition period according to the actual temperature value, the temperature rise and the first temperature drop.
2. The method of claim 1, further comprising:
acquiring a second temperature drop of the static duration after the vehicle is powered off or flameout;
and calculating a second actual temperature value of the vehicle tire after the current ignition period and power-off or flameout according to the actual temperature value, the temperature rise, the first temperature drop and the second temperature drop.
3. The method of claim 2, wherein,
the calculation formula of the first actual temperature value is as follows:
the calculation formula of the second actual temperature value is as follows:
wherein, T env Is the value of the actual temperature, and,
is the first actual temperature value, T tire Is said second actual temperature value, T rise In order for the temperature to rise, the temperature is raised,
in order to achieve said first temperature drop,
is the second temperature drop.
4. Method according to claim 2 or 3, characterized in that it comprises, after calculating a second actual temperature value for said vehicle tyre:
judging whether the second actual temperature value is lower than the actual temperature value;
if the second actual temperature value is lower than the actual temperature value, the actual temperature value is taken as the second actual temperature value.
5. The method of claim 2, further comprising, prior to calculating the first actual temperature value and the second actual temperature value:
and acquiring a relationship table of the movement time length-temperature rise, a relationship table of the first static time length-first temperature drop and a relationship table of the second static time length-second temperature drop.
6. An indirect vehicle tire temperature monitoring device, comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring an actual temperature value of an environment where a vehicle is located and acquiring the duration of a current ignition cycle of the vehicle;
the first calculation module is used for calculating the temperature rise of the tire according to the movement duration of the duration and calculating the first temperature drop of the tire according to the static duration of the duration; and
and the second calculation module is used for calculating a first actual temperature value of the vehicle tire in the current ignition period according to the actual temperature value, the temperature rise and the first temperature drop.
7. The apparatus of claim 6, further comprising:
the first acquisition module is used for acquiring a second temperature drop of the vehicle in a power-off or flameout static time length;
and the third calculation module is used for calculating a second actual temperature value of the vehicle tire after the current ignition period is powered off or flameout according to the actual temperature value, the temperature rise, the first temperature drop and the second temperature drop.
8. The apparatus of claim 7, wherein,
the calculation formula of the first actual temperature value is as follows:
the calculation formula of the second actual temperature value is as follows:
wherein, T env Is the value of the actual temperature, and,
is the first actual temperature value, T tire Is said second actual temperature value, T rise In order for the temperature to rise, the temperature,
in order to achieve said first temperature drop,
is the second temperature drop.
9. The apparatus of claim 7 or 8, wherein the third computing module is further configured to determine whether the second actual temperature value is lower than the actual temperature value; and if the second actual temperature value is lower than the actual temperature value, taking the actual temperature value as the second actual temperature value.
10. The apparatus of claim 7, further comprising:
and the second acquisition module is used for acquiring a relationship table of the movement duration-temperature rise, a relationship table of the first rest duration-first temperature drop and a relationship table of the second rest duration-second temperature drop.
11. A vehicle, characterized by comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the indirect vehicle tire temperature monitoring method of any of claims 1-5.
12. A computer-readable storage medium having stored thereon a computer program, the program being executable by a processor for implementing the method of indirectly monitoring the temperature of a tire for a vehicle as claimed in any one of claims 1 to 5.
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