CN115366589A - Method and device for measuring tire pressure through pulse number and electric vehicle - Google Patents

Abstract

The invention relates to a method and a device for measuring tire pressure through pulse number and an electric vehicle, which are applied to the technical field of electric vehicles and comprise the following steps: in the running process of the electric vehicle, the pulse number of a target wheel of the electric vehicle is obtained, and when a preset pulse number threshold value is reached, the real-time running distance of the target wheel is obtained, if the real-time running distance is smaller than the standard running distance, the phenomenon of air leakage of the target wheel is shown, namely pressure relief is carried out, under the condition, the ratio of the real-time radius of the target wheel to the standard radius is calculated, the ratio is used as the percentage of the real-time tire pressure, the percentage is closer to 1, the smaller the deformation quantity of the target wheel is shown to be, the more the tire pressure is closer to normal, when the tire pressure percentage is lower than the preset threshold value, alarm processing is carried out, through the scheme, the real-time measurement of the tire pressure of the target wheel of the electric vehicle is realized, and the problems that in the prior art, the tire pressure cannot be measured, and potential safety hazards can be generated when the electric vehicle has abnormal tire pressure.

Description

Method and device for measuring tire pressure through pulse number and electric vehicle

technical field

The invention relates to the technical field of electric vehicles, in particular to a method and device for measuring tire pressure through pulse numbers and an electric vehicle.

Background technique

In terms of policy requirements such as energy conservation and emission reduction and carbon peaking, the demand for economical, convenient and green travel is increasingly strong, and electric two-wheelers are the first priority for residents to travel conveniently. However, once the rider of an electric two-wheeler has abnormal tire pressure, there will be traffic safety hazards, and the rider will be asked to walk to push the vehicle to a maintenance point for repairs. The riding experience of the vehicle.

Contents of the invention

In view of this, the object of the present invention is to provide a method, device and electric vehicle for measuring tire pressure through the number of pulses, so as to solve the problem that in the prior art, it is impossible to measure the tire pressure of the electric vehicle in real time. When the pressure is abnormal, there will be a safety hazard.

According to the first aspect of the embodiments of the present invention, there is provided a method for measuring tire pressure through the number of pulses, including:

During the driving process of the electric vehicle, obtain the pulse number of the target wheel of the electric vehicle;

When the pulse number of the target wheel reaches the preset pulse number threshold of the target wheel, the real-time driving distance of the target wheel is obtained;

Comparing the real-time travel distance of the target wheel with the preset standard travel distance of the target wheel, when the real-time travel distance of the target wheel is less than the preset standard travel distance of the target wheel, it is judged that the target wheel has air leakage;

Calculate the real-time radius of the target wheel according to the real-time driving distance of the target wheel, and use the ratio of the real-time radius of the target wheel to the preset standard radius of the target wheel as the percentage of the real-time tire pressure of the target wheel;

When the percentage of real-time tire pressure of the target wheel is lower than the preset tire pressure threshold, alarm processing is performed.

Preferably, it is characterized in that,

The preset pulse number threshold of the target wheel is the number of pulses when the target wheel rotates for X cycles when the tire pressure of the target car is normal;

The preset standard travel distance of the target wheel is the distance traveled by the target wheel for X rotations when the tire pressure of the target car is normal;

The preset standard radius of the target wheel is the radius of the target wheel when the tire pressure of the target vehicle is normal.

Preferably, it also includes:

When the electric vehicle is driving for the first time, when the pulse number of the target wheel reaches the preset pulse number threshold of the target wheel;

Acquiring the real-time traveling distance of the target wheel, if the error between the real-time traveling distance of the target wheel and the preset standard traveling distance of the target wheel is within the preset error threshold, it indicates that the preset standard traveling distance of the target wheel is valid, and the electric During the subsequent driving of the car, the measurement of the real-time tire pressure of the target wheel is started.

Preferably,

During the driving process of the electric vehicle, when the pulse number of the target wheel reaches the preset threshold value of the pulse number of the target wheel, the six-axis sensor is used to judge whether the electric vehicle is driving in a straight line, and if it is driving in a straight line, the real-time driving distance of the target wheel is obtained.

Preferably,

Use the six-axis sensor to judge whether the electric vehicle is driving in a straight line. If it is not driving in a straight line, the pulse number of the target wheel will be cleared, and the pulse number of the target wheel will be counted again. When the preset pulse number threshold of the target wheel is reached again, pass The six-axis sensor judges whether the electric vehicle is traveling in a straight line, and repeats the above process until the electric vehicle is traveling in a straight line, and then measures the real-time tire pressure of the target wheel.

Preferably,

When the target wheel is the rear wheel of the electric vehicle, the pulse number of the electric vehicle motor is obtained, and when the pulse number of the electric vehicle motor reaches a preset electric vehicle rear wheel pulse number threshold, the real-time driving distance of the electric vehicle rear wheel is obtained.

Preferably,

When the target wheel is the front wheel of the electric vehicle, obtain the pulse number of the Hall sensor arranged on the front wheel of the electric vehicle; The real-time driving distance of the front wheels of the car.

Preferably,

The Hall sensors include a plurality of them, which are evenly distributed on the front wheels of the electric vehicle.

According to the second aspect of the embodiments of the present invention, there is provided a device for measuring tire pressure through the number of pulses, including:

Pulse number acquisition module: used to obtain the pulse number of the target wheel of the electric vehicle during the driving process of the electric vehicle;

Distance acquisition module: used to obtain the real-time driving distance of the target wheel when the pulse number of the target wheel reaches the preset threshold value of the pulse number of the target wheel;

Judgment module: used to compare the real-time travel distance of the target wheel with the preset standard travel distance of the target wheel. When the real-time travel distance of the target wheel is less than the preset standard travel distance of the target wheel, it is judged that the target wheel has air leakage ;

Calculation module: used to calculate the real-time radius of the target wheel according to the real-time driving distance of the target wheel, and use the ratio of the real-time radius of the target wheel to the preset standard radius of the target wheel as the percentage of the real-time tire pressure of the target wheel;

Alarm module: used for alarm processing when the percentage of the real-time tire pressure of the target wheel is lower than the preset tire pressure threshold.

According to a third aspect of the embodiments of the present invention, an electric vehicle is provided, including:

a memory in which program instructions are stored;

The processor is used to execute the program instructions stored in the memory, and execute the steps of the above-mentioned method for measuring tire pressure through the number of pulses.

The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

This application obtains the pulse number of the target wheel of the electric vehicle during the driving process of the electric vehicle by setting the pulse number threshold of the target wheel of the electric vehicle, the standard travel distance under the pulse number threshold, and the standard radius under normal tire pressure, and when it reaches When the preset pulse number threshold is reached, the real-time driving distance of the target wheel is obtained. If the real-time driving distance is less than the standard driving distance, it indicates that the target wheel has leaked air, that is, the pressure is released, and the radius of the target wheel is reduced. In this case , calculate the ratio of the real-time radius of the target wheel to the standard radius, and use this ratio as the percentage of the real-time tire pressure. The closer the percentage is to 1, the smaller the deformation of the target wheel and the closer the tire pressure is to normal. When the tire pressure percentage is lower than the preset When the threshold value is set, alarm processing is carried out. Through the above-mentioned scheme, the real-time measurement of the tire pressure of the target vehicle of the electric vehicle is realized, which solves the problem that the tire pressure cannot be measured in the prior art. When the tire pressure of the electric vehicle is abnormal, it may cause safety hazard issues.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

Fig. 1 is a schematic flowchart of a method for measuring tire pressure by pulse number according to an exemplary embodiment;

Fig. 2 is a system schematic diagram of a device for measuring tire pressure through pulse numbers according to another exemplary embodiment;

In the drawings: 1-pulse number acquisition module, 2-distance acquisition module, 3-judgment module, 4-calculation module, 5-alarm module.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

Embodiment one

Fig. 1 is a schematic flowchart of a method for measuring tire pressure by pulse number according to an exemplary embodiment, as shown in Fig. 1 , including:

S1, during the driving process of the electric vehicle, obtain the pulse number of the target wheel of the electric vehicle;

S2, when the pulse number of the target wheel reaches the preset pulse number threshold of the target wheel, acquire the real-time traveling distance of the target wheel;

S3, comparing the real-time traveling distance of the target wheel with the preset standard traveling distance of the target wheel, and when the real-time traveling distance of the target wheel is less than the preset standard traveling distance of the target wheel, it is judged that the target wheel has an air leakage phenomenon;

S4, calculating the real-time radius of the target wheel according to the real-time traveling distance of the target wheel, and using the ratio of the real-time radius of the target wheel to the preset standard radius of the target wheel as the percentage of the real-time tire pressure of the target wheel;

S5, when the percentage of the real-time tire pressure of the target wheel is lower than the preset tire pressure threshold, perform alarm processing;

It can be understood that by setting the pulse number threshold of the target wheel of the electric vehicle, the standard travel distance under the pulse number threshold and the standard radius under normal tire pressure, the pulse number of the target wheel of the electric vehicle is obtained during the driving of the electric vehicle, And when the preset pulse number threshold is reached, the real-time travel distance of the target wheel is obtained. If the real-time travel distance is less than the standard travel distance, it indicates that the target wheel has air leakage, that is, pressure release, and the radius of the target wheel decreases. In this case, calculate the ratio of the real-time radius of the target wheel to the standard radius, and use this ratio as the percentage of real-time tire pressure. The closer the percentage is to 1, the smaller the deformation of the target wheel and the closer the tire pressure is to normal. When the tire pressure percentage When it is lower than the preset threshold value, alarm processing is carried out. The alarm processing can be a voice alarm reminder through a voice alarm, and the acquisition of real-time driving distance can be through a high-precision positioning sensor. Through the above-mentioned scheme, realize The real-time measurement of the tire pressure of the target vehicle of the electric vehicle solves the problem that in the prior art, the tire pressure cannot be measured, and when the tire pressure of the electric vehicle is abnormal, a potential safety hazard may occur.

Preferably, it is characterized in that,

The preset pulse number threshold of the target wheel is the number of pulses when the target wheel rotates for X cycles when the tire pressure of the target car is normal;

The preset standard travel distance of the target wheel is the distance traveled by the target wheel for X rotations when the tire pressure of the target car is normal;

The preset standard radius of the target wheel is the radius of the target wheel when the tire pressure of the target vehicle is normal;

It is understandable that when the tire pressure is completely normal, the actual calculation of the tire circumference is based on the tire linear motion of 100 circles as a standard distance measurement unit, which is recorded as the symbol S1, and the actual test of the dual-frequency dual-mode high-precision positioning function unit is simultaneously passed. The distance Sg of 100 laps, under the condition of normal tire pressure, S1=Sg, shows that the data obtained by the dual-frequency dual-mode high-precision positioning functional unit is reliable and stable and can be used as a reference value. In the same way, theoretically count the number of pulses m per one cycle of motor movement. For example, when the rear wheel motor moves for 100 cycles, the total pulse data is M1. Similarly, when the actual statistics show that the tire pressure is 100% normal, the radius is R1, and the tire pressure changes. When it is 0, the radius is R0. In the actual riding process, if the tire pressure is insufficient, the diameter of the tire will become smaller at this time. Using the dual-frequency dual-mode high-precision positioning function unit, the actual measurement is to move the tire linearly to 100 The distance when the cycle pulse number M1 is Sz. According to the formula Sz=100*2*π*Rx, the value of Rx can be obtained, that is, the actual radius of the tire. When Rx<R1, it means that the tire has air leakage. Combine Rx and R1 The ratio of the tire is used as a percentage of the tire pressure. The smaller the deformation of the tire, that is, the closer Rx is to R1. When no air leakage occurs, the ratio of Rx to R1 is 1 or infinitely close to 1.

Preferably, it also includes:

When the electric vehicle is driving for the first time, when the pulse number of the target wheel reaches the preset pulse number threshold of the target wheel;

Acquiring the real-time traveling distance of the target wheel, if the error between the real-time traveling distance of the target wheel and the preset standard traveling distance of the target wheel is within the preset error threshold, it indicates that the preset standard traveling distance of the target wheel is valid, and the electric During the subsequent driving of the car, start the measurement of the real-time tire pressure of the target wheel;

It is understandable that during the initial driving of the motor, the validity of the preset standard driving distance needs to be verified. Since the tire pressure is normal for the first time on the road, it should be equal to the preset theoretical standard driving distance, and errors are allowed , but the error should be within a controllable range.

Preferably,

During the driving process of the electric vehicle, when the pulse number of the target wheel reaches the preset threshold value of the pulse number of the target wheel, the six-axis sensor is used to judge whether the electric vehicle is driving in a straight line, and if it is driving in a straight line, the real-time driving distance of the target wheel is obtained;

It is understandable that during the driving process of the electric vehicle, since the preset standard driving distance is a circular motion under straight-line driving, when testing the tire pressure, in order to improve the accuracy as much as possible, it is necessary to obtain the electric vehicle in a straight line. The effective distance in the state.

Preferably,

Use the six-axis sensor to judge whether the electric vehicle is driving in a straight line. If it is not driving in a straight line, the pulse number of the target wheel will be cleared, and the pulse number of the target wheel will be counted again. When the preset pulse number threshold of the target wheel is reached again, pass The six-axis sensor judges whether the electric vehicle is traveling in a straight line, and repeats the above process until the electric vehicle is traveling in a straight line, and measures the real-time tire pressure of the target wheel;

It can be understood that if the six-axis sensor detects that the road section is not a straight-line distance when the pulse number reaches the preset pulse number threshold, the pulse number will be reset to zero and the counting will be performed again until the straight-line driving condition, until the pulse count is complete.

Preferably,

When the target wheel is the rear wheel of the electric vehicle, the pulse number of the electric vehicle motor is obtained, and when the pulse number of the electric vehicle motor reaches the preset electric vehicle rear wheel pulse number threshold, the real-time driving distance of the electric vehicle rear wheel is obtained;

It can be understood that the motor of the electric vehicle is used to drive the rear wheels of the electric vehicle, so the pulses of the motor can be counted to complete the counting of the rotation cycles of the rear wheels of the electric vehicle. Under normal tire pressure, the number of pulses of the counting motor is How much time, the rear wheel rotates X circles, and the travel distance when the rear wheels rotate X circles.

Preferably,

When the target wheel is the front wheel of the electric vehicle, obtain the pulse number of the Hall sensor arranged on the front wheel of the electric vehicle; The real-time driving distance of the front wheels of the car;

It is understandable that the front wheel of an electric vehicle does not have a motor, so it is necessary to install a Hall sensor on the front wheel. When the front wheel rotates once, the pulse number of a Hall sensor is 1, and the number of pulses of the front wheel X is counted, that is, the Hall sensor When the number of pulses of the sensor is X, measure its actual travel distance, and then compare it with the preset travel distance of the front wheel turning X circles under normal tire pressure, that is, it can be counted by the pulse number of the Hall sensor.

Preferably,

The Hall sensor includes multiple, evenly distributed on the front wheel of the electric vehicle;

It can be understood that multiple Hall sensors can be set, for example, when there are 5 Hall sensors, the number of pulses is 5 when the front wheel of the electric vehicle rotates one revolution.

Embodiment two

This embodiment also discloses a system schematic diagram of a device for measuring tire pressure through the number of pulses, as shown in Figure 2, including:

Pulse number acquisition module 1: used to obtain the pulse number of the target wheel of the electric vehicle during the driving process of the electric vehicle;

Distance acquisition module 2: used to obtain the real-time driving distance of the target wheel when the pulse number of the target wheel reaches the preset threshold value of the pulse number of the target wheel;

Judgment module 3: used to compare the real-time travel distance of the target wheel with the preset standard travel distance of the target wheel. When the real-time travel distance of the target wheel is less than the preset standard travel distance of the target wheel, it is judged that the target wheel has air leakage Phenomenon;

Calculation module 4: used to calculate the real-time radius of the target wheel according to the real-time driving distance of the target wheel, and use the ratio of the real-time radius of the target wheel to the preset standard radius of the target wheel as the percentage of the real-time tire pressure of the target wheel;

Alarm module 5: used to perform alarm processing when the percentage of the real-time tire pressure of the target wheel is lower than the preset tire pressure threshold;

It can be understood that the pulse number acquisition module 1 is used to obtain the pulse number of the target wheel of the electric vehicle during the driving process of the electric vehicle; the distance acquisition module 2 is used for when the pulse number of the target wheel reaches the pulse number of the preset target wheel When the threshold value is reached, the real-time travel distance of the target wheel is obtained; the judgment module 3 is used to compare the real-time travel distance of the target wheel with the preset target wheel standard travel distance, when the real-time travel distance of the target wheel is less than the preset target wheel During the standard travel distance, it is judged that air leakage has occurred in the target wheel; the calculation module 4 is used to calculate the real-time radius of the target wheel according to the real-time travel distance of the target wheel, and the ratio of the real-time radius of the target wheel to the preset target wheel standard radius is used as The percentage of the real-time tire pressure of the target wheel; through the alarm module 5, when the percentage of the real-time tire pressure of the target wheel is lower than the preset tire pressure threshold, alarm processing is carried out; through the above-mentioned scheme, the real-time monitoring of the tire pressure of the electric vehicle target car is realized. The measurement solves the problem that the tire pressure cannot be measured in the prior art, and when the tire pressure of the electric vehicle is abnormal, it may cause potential safety hazards.

Embodiment three

This embodiment also discloses an electric vehicle, comprising:

a memory in which program instructions are stored;

The processor is used to execute the program instructions stored in the memory, and execute the steps of a method for measuring tire pressure through the number of pulses as described above;

It can be understood that the memory mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like.

It can be understood that, the same or similar parts in the above embodiments can be referred to each other, and the content that is not described in detail in some embodiments can be referred to the same or similar content in other embodiments.

It should be noted that, in the description of the present invention, the terms "first", "second" and so on are only used for description purposes, and should not be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" means at least two.

Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent modules, segments or portions of code comprising one or more executable instructions for implementing specific logical functions or steps of the process , and the scope of preferred embodiments of the invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including substantially concurrently or in reverse order depending on the functions involved, which shall It is understood by those skilled in the art to which the embodiments of the present invention pertain.

It should be understood that various parts of the present invention can be realized by hardware, software, firmware or their combination. In the above described embodiments, various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques known in the art: Discrete logic circuits, ASICs with suitable combinational logic gates, Programmable Gate Arrays (PGAs), Field Programmable Gate Arrays (FPGAs), etc.

Those of ordinary skill in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. During execution, one or a combination of the steps of the method embodiments is included.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, each unit may exist separately physically, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (10)

1. A method for measuring tire pressure by the number of pulses, characterized in that it comprises: During the driving process of the electric vehicle, obtain the pulse number of the target wheel of the electric vehicle; When the pulse number of the target wheel reaches the preset pulse number threshold of the target wheel, the real-time driving distance of the target wheel is obtained; Comparing the real-time travel distance of the target wheel with the preset standard travel distance of the target wheel, when the real-time travel distance of the target wheel is less than the preset standard travel distance of the target wheel, it is judged that the target wheel has air leakage; Calculate the real-time radius of the target wheel according to the real-time driving distance of the target wheel, and use the ratio of the real-time radius of the target wheel to the preset standard radius of the target wheel as the percentage of the real-time tire pressure of the target wheel; When the percentage of real-time tire pressure of the target wheel is lower than the preset tire pressure threshold, alarm processing is performed. 2. The method of claim 1, wherein, The preset pulse number threshold of the target wheel is the number of pulses when the target wheel rotates for X cycles when the tire pressure of the target car is normal; The preset standard travel distance of the target wheel is the distance traveled by the target wheel for X rotations when the tire pressure of the target car is normal; The preset standard radius of the target wheel is the radius of the target wheel when the tire pressure of the target vehicle is normal. 3. The method according to claim 2, further comprising: When the electric vehicle is driving for the first time, when the pulse number of the target wheel reaches the preset pulse number threshold of the target wheel; Acquiring the real-time traveling distance of the target wheel, if the error between the real-time traveling distance of the target wheel and the preset standard traveling distance of the target wheel is within the preset error threshold, it indicates that the preset standard traveling distance of the target wheel is valid, and the electric During the subsequent driving of the car, the measurement of the real-time tire pressure of the target wheel is started. 4. The method according to claim 1 or 3, characterized in that, During the driving process of the electric vehicle, when the pulse number of the target wheel reaches the preset threshold value of the pulse number of the target wheel, the six-axis sensor is used to judge whether the electric vehicle is driving in a straight line, and if it is driving in a straight line, the real-time driving distance of the target wheel is obtained. 5. The method of claim 4, wherein, Use the six-axis sensor to judge whether the electric vehicle is driving in a straight line. If it is not driving in a straight line, the pulse number of the target wheel will be cleared, and the pulse number of the target wheel will be counted again. When the preset pulse number threshold of the target wheel is reached again, pass The six-axis sensor judges whether the electric vehicle is traveling in a straight line, and repeats the above process until the electric vehicle is traveling in a straight line, and then measures the real-time tire pressure of the target wheel. 6. The method of claim 5, wherein, When the target wheel is the rear wheel of the electric vehicle, the pulse number of the electric vehicle motor is obtained, and when the pulse number of the electric vehicle motor reaches a preset electric vehicle rear wheel pulse number threshold, the real-time driving distance of the electric vehicle rear wheel is obtained. 7. The method of claim 5, wherein, When the target wheel is the front wheel of the electric vehicle, obtain the pulse number of the Hall sensor arranged on the front wheel of the electric vehicle; The real-time driving distance of the front wheels of the car. 8. The method of claim 7, wherein, The Hall sensors include a plurality of them, which are evenly distributed on the front wheels of the electric vehicle. 9. A device for measuring tire pressure through the number of motor pulses, characterized in that it includes: Pulse number acquisition module: used to obtain the pulse number of the target wheel of the electric vehicle during the driving process of the electric vehicle; Distance acquisition module: used to obtain the real-time driving distance of the target wheel when the pulse number of the target wheel reaches the preset threshold value of the pulse number of the target wheel; Judgment module: used to compare the real-time driving distance of the target wheel with the preset standard driving distance of the target wheel. When the real-time driving distance of the target wheel is less than the preset standard driving distance of the target wheel, it is judged that the target wheel has air leakage ; Calculation module: used to calculate the real-time radius of the target wheel according to the real-time driving distance of the target wheel, and use the ratio of the real-time radius of the target wheel to the preset standard radius of the target wheel as the percentage of the real-time tire pressure of the target wheel; Alarm module: used for alarm processing when the percentage of the real-time tire pressure of the target wheel is lower than the preset tire pressure threshold. 10. An electric vehicle, characterized in that it comprises: a memory in which program instructions are stored; The processor is used to execute the program instructions stored in the memory, and execute the method for measuring tire pressure through the number of pulses according to any one of claims 1-8.

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