CN115817075A - Vehicle tire working mode identification method and tire condition monitoring device - Google Patents

Abstract

The invention relates to a vehicle tire working mode identification method and a tire condition monitoring device. The vehicle tire working mode identification method comprises the following steps: s1, a tire condition monitoring device periodically acquires a first signal corresponding to a tire, wherein the first signal is used for representing the rotation state of the tire; s2, determining whether the tire rolls or not based on the first signal, if so, accumulating the rolling movement times, and if not, accumulating the non-rolling time; and S3, identifying the working mode of the tire based on the rolling motion times or the rolling non-occurrence time. The invention provides a vehicle tire working mode identification method and a tire condition monitoring device, which can identify whether the working mode of a vehicle tire is a positive tire mode or a spare tire mode.

Description

A vehicle tire working mode recognition method and tire condition monitoring device

technical field

The invention relates to the technical field of vehicle automatic driving, in particular to a vehicle tire working mode recognition method and a tire condition monitoring device.

Background technique

The tire condition monitoring system is a safety system to ensure the good operation of the vehicle. As a regulatory requirement item, the tire condition monitoring system has developed rapidly in the automobile market in recent years. Because it can monitor the running status of automobile tires in real time, when the tires have abnormal conditions such as air leakage or ultra-high temperature, it can send warnings to the driver in time, so that tire damage can be avoided to the greatest extent, and a good environment for safe operation of vehicles can be provided. Assure.

As an active safety system of a car, the tire condition monitoring system can not only prevent the vehicle from blowing out, but also avoid accidents. In addition, inflating the tires to the recommended standard pressure value can also reduce the fuel consumption of the vehicle, so that the tires can be used for a longer period of time.

During the use of the vehicle, it is inevitable that the tire will blow out or be punctured by a hard object, which will cause the vehicle to be unable to continue driving. At this time, it is necessary to use the spare tire of the vehicle. As an uncommon but very important accessory in a vehicle, we often pay attention to the front tire and ignore the condition of the spare tire. If you only pay attention to the spare tire when the main tire fails and cannot continue to be used, if you only find out that the air pressure of the spare tire is too low at this time, it will bring a lot of trouble to the car owner. Therefore, it is necessary to automatically recognize which state the tire working mode is in.

Contents of the invention

In view of the above-mentioned problems in the prior art, the present invention proposes a vehicle tire working mode recognition method and a tire condition monitoring device, which can identify the working mode of the vehicle tire as a normal tire mode or a spare tire mode.

Specifically, the present invention proposes a vehicle tire working mode recognition method, the working mode includes a normal tire mode and a spare tire mode, the normal tire mode is used to indicate that the tire is in use, and the spare tire mode is used To indicate that the tire is in a spare state, each vehicle tire is equipped with a tire condition monitoring device, and the identification method includes the following steps:

S1, the tire condition monitoring device periodically acquires a first signal corresponding to the tire, and the first signal is used to represent the rotation state of the tire;

S2. Determine whether the tire is rolling based on the first signal. If rolling occurs, accumulate the number of rolling movements, and if rolling does not occur, accumulate the duration of non-rolling;

S3. Identify the working mode of the tire based on the number of rolling motions or the duration of non-rolling.

According to an embodiment of the present invention, in the step S3, if the number of rolling movements of the corresponding tire exceeds a preset value, it is judged that the working mode of the tire is the normal tire mode, otherwise it is the spare tire mode;

And/or, if the non-rolling duration of the corresponding tire exceeds the preset value, it is judged that the working mode of the tire is the spare tire mode, otherwise it is the normal tire mode.

According to an embodiment of the invention, said first signal comprises a rotational speed value or a rotational acceleration value of said tire;

In step S2, if the rotation speed value or the rotation acceleration value is greater than the first set threshold value, then count and accumulate the number of rolling motions RollNum of the tire; if the rotation speed value or the rotation acceleration value is not greater than the first set threshold value, then Accumulated duration without scrolling.

According to one embodiment of the present invention, in step S3, if the number of rolling movements of the tire RollNum accumulated is greater than the second set threshold value, the working mode of the tire is identified as the normal mode, and the non-occurrence of the tire The rolling duration is cleared and the number of rolling movements RollNum is cleared;

If the non-rolling duration of the tire is greater than the set threshold, the working mode of the tire is identified as the spare tire mode, and the non-rolling duration and RollNum of the tire’s rolling movement times are reset to zero.

According to an embodiment of the present invention, the set threshold includes a third set threshold and a fourth set threshold;

If it is judged that the tire pressure value of the tire is not less than the preset value and the duration of no rolling is greater than the third set threshold, then the working mode of the tire is identified as the spare tire mode;

Or if it is judged that the tire pressure value of the tire is less than the preset value and the duration of non-rolling is greater than the fourth set threshold, then the working mode of the tire is identified as the spare tire mode, wherein the fourth set threshold is much smaller than the third set threshold Threshold setting.

According to an embodiment of the present invention, the working mode of the tire is switched from the normal tire mode to the spare tire mode, and after the working mode of the tire is identified as the spare tire mode, the corresponding tire condition monitoring device sends an external The sending cycle of the data packet is P1, and the duration is Q1. After the duration Q1 ends, the sending cycle of the corresponding data packet sent by the tire condition monitoring device is P2, wherein P2 is greater than P1.

According to an embodiment of the present invention, if the working mode of the tire is the spare tire mode, a spare tire mode flag is set in the data packet sent by the tire condition monitoring device.

According to an embodiment of the present invention, the ECU of the vehicle receives the data packets sent by all tire condition monitoring devices of the vehicle, and determines the working modes of all tires according to the spare tire mode flag.

According to an embodiment of the present invention, the tire condition monitoring device periodically acquires the second signal corresponding to the tire, the second signal includes the tire pressure value of the tire, and the data packet sent by the tire condition monitoring device includes said second signal;

The vehicle ECU receives the data packet, and determines the working mode of the tire according to the spare tire mode flag, and if the working mode is the spare tire mode, then judges whether the tire pressure value of the corresponding tire is less than the fifth set threshold, If less, it is judged that the tire needs to be inflated.

The present invention also provides a tire condition monitoring device for realizing the aforementioned vehicle tire working mode recognition method, comprising:

an acquisition unit, configured to periodically acquire a first signal corresponding to the tire, the first signal being used to represent the rotation state of the tire;

a judging unit, configured to determine whether the tire rolls based on the first signal;

A counting unit, for counting the number of rolling motions of the tire;

A timing unit for calculating the time when the tire does not roll;

The identifying unit is configured to identify the working mode of the tire based on the number of rolling motions of the tire or the duration of non-rolling.

The invention provides a vehicle tire working mode recognition method and a tire condition monitoring device, which can identify the vehicle tire working mode as a normal tire mode or a spare tire mode by judging the rotation state of the wheel.

It is to be understood that both the foregoing general description and the following detailed description of the invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Description of drawings

The accompanying drawings are included to provide further explanation of the present invention, and they are incorporated and constitute a part of this application. The accompanying drawings illustrate embodiments of the present invention and together with the specification serve to explain the principle of the present invention.

In the attached picture:

Fig. 1 shows a block flow diagram of a method for recognizing a working mode of a vehicle tire according to an embodiment of the present invention.

Fig. 2 shows a schematic structural diagram of a tire condition monitoring device according to an embodiment of the present invention.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description. In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present application, it should be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. indicate the orientation Or positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate or imply the device or element referred to It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the protection scope of the present application; the orientation words "inner and outer" refer to the inner and outer relative to the outline of each component itself.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. To limit the protection scope of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant according to his or her judgment, and their detailed meanings are listed in this article described in the relevant section of the description. Furthermore, it is required that this application be understood not only by the actual terms used, but also by the meaning implied by each term.

Fig. 1 shows a block flow diagram of a method for recognizing a working mode of a vehicle tire according to an embodiment of the present invention. As shown in the figure, the present invention provides a vehicle tire working mode recognition method. The working modes of vehicle tires include positive tire mode and spare tire mode. Among them, the normal tire mode is used to indicate that the tire is in use, and the vehicle tire in use is called a normal tire. The spare tire mode is used to indicate that the tire is in a spare state, and the vehicle tire in the spare state is called a spare tire. Each vehicle tire is equipped with a tire condition monitoring device. The identification method includes the following steps:

S1, the tire condition monitoring device periodically acquires a first signal corresponding to the tire, and the first signal is used to represent the rotation state of the tire;

S2. Determine whether the tire is rolling based on the first signal. If rolling occurs, accumulate the number of rolling movements, and if rolling does not occur, accumulate the duration of non-rolling;

S3. Identify the working mode of the tire based on the number of rolling motions or the duration of non-rolling.

The recognition method divides the working mode of the vehicle tire into the normal tire mode and the spare tire mode, and different working modes correspond to different working states, and judges the working mode of the vehicle tire through the tire condition monitoring device side to obtain the information of each tire on the vehicle. Specifically, whether it is a tire installed on the vehicle for driving or a spare tire placed in the car, the working mode of the vehicle tire is identified as the positive tire mode by the accumulated number of rolling movements or the length of time when no rolling occurs or spare tire mode.

Preferably, in step S3, if the cumulative number of rolling movements of the corresponding tire exceeds a preset value, it is determined that the working mode of the tire is the normal tire mode, otherwise it is the spare tire mode. It is easy to understand that when the tire condition monitoring device can periodically obtain the first signal corresponding to the tire, the vehicle should be in the starting state. Once the vehicle is running, the positive tire will continue to roll, so the tire can be judged by accumulating the number of rolling movements. The working mode is positive tire mode.

And/or, if the accumulated non-rolling duration of the corresponding tire exceeds the preset value, it is judged that the working mode of the tire is the spare tire mode, otherwise it is the normal tire mode. Similarly, when the vehicle is started and running, the spare tire generally does not roll continuously, so it can be judged that the working mode of the tire is the spare tire mode by accumulating the non-rolling time.

Preferably, the first signal includes a rotation speed value or a rotation acceleration value, which is used to characterize the rotation state of the tire of the vehicle. If the rotation speed value or the rotation acceleration value is greater than the first set threshold value, then the number of rolling motions RollNum of the vehicle tire is counted and accumulated; if the rotation speed value or the rotation acceleration value is not greater than the first set threshold value, then the cumulative roll does not occur duration. In one embodiment, the first set threshold value of the rotational acceleration is set to 5g, if the rotational acceleration value is greater than 5g, then add 1 to the number of rolling motions RollNum of the vehicle tire; if the rotational acceleration value is less than or equal to 5g, then judge the vehicle The tire has not rolled and accumulated the non-rolling time.

Preferably, in step S3, if the RollNum count of the number of rolling motions of the vehicle tires is greater than the second set threshold, then the working mode of the vehicle tires is identified as the positive tire mode, and the non-rolling duration of the tires is cleared and rolling occurs. The number of times RollNum is cleared. If the non-rolling duration is greater than the set threshold, the working mode of the vehicle tire is identified as the spare tire mode, and the non-rolling duration of the tire and RollNum of the rolling movement times are reset to zero. For example, if the accumulative RollNum count value of a certain tire is 5, it is identified as a good tire when it is greater than the second set threshold. If it is not cleared, when the positive tire needs to be replaced, that is, when it needs to be switched to the spare tire working mode, because its accumulated rolling motion times RollNum count value is still 5, it cannot be recognized as a spare tire. Therefore, once the working mode of the vehicle tire is determined, the non-rolling duration of the vehicle tire and the number of rolling movements RollNum will be cleared to avoid the subsequent change of the vehicle tire working mode due to the vehicle tire switching working mode or the vehicle being parked for a long time. recognition error. In one embodiment, the second set threshold value is set to 1, and the set threshold value of the non-rolling time is 48h. If the non-rolling time is longer than 48h, the working mode of the vehicle tire is identified as the spare tire mode, that is, the vehicle tire is identified as For the spare tire, the number of times RollNum and the duration of no rolling movement of the vehicle tire have been cleared accordingly. If the RollNum count of the rolling motion of the vehicle tire is greater than 1, it is judged that the vehicle tire is rolling, and the working mode of the vehicle tire is identified as the positive tire mode, that is, the vehicle tire is recognized as the positive tire, and the rolling motion of the vehicle tire is cleared accordingly The number of times RollNum and the duration of no rollover.

Preferably, the set threshold includes a third set threshold and a fourth set threshold: if it is judged that the tire pressure value of the vehicle tire is not less than the preset value and the duration of non-rolling is greater than the third set threshold, then identify the working mode of the tire In spare tire mode. This situation corresponds to when the vehicle is parked for a long time, there is no switching between the positive tire and the spare tire. The preset value is usually set to the standard tire pressure value of the tire, because the positive tire has sufficient tire pressure value at this time, and the spare tire does not need to be activated, so as to avoid frequent switching of the normal tire to the spare tire mode during the normal use of the vehicle. Thereby reducing the power consumption of the tire condition detection device in the positive tire. The third set threshold may be set to 48h. When the tire pressure value of the vehicle tire is not less than the standard tire pressure value and the time without rolling is longer than 48h, the working mode of the tire is identified as the spare tire mode. For the situation that the vehicle is used every day, because the use interval of the vehicle is less than 48h, the positive tire will not easily enter the spare tire mode.

Or it is determined that the tire pressure value of the tire is less than a preset value and the duration of non-rolling is greater than the fourth set threshold, and the working mode of the tire is identified as the spare tire mode, wherein the fourth set threshold is much smaller than the third set threshold. This situation corresponds to the situation that when the pressure of the positive tire of the vehicle is insufficient, it may be necessary to replace the positive tire with a spare tire. The preset value is set as the minimum working tire pressure value of the tire or the low pressure alarm threshold. If the tire pressure value is lower than the set value, it indicates that the normal tire cannot run well, and the normal tire needs to be replaced. The fourth set threshold can be defined according to the time-consuming time of tire replacement, which is set to 5 minutes in this embodiment.

Preferably, the working mode of the tire is switched from the normal tire mode to the spare tire mode, and after the working mode of the tire is identified as the spare tire mode, the sending period of the data packet sent by the corresponding tire condition monitoring device is P1, and The duration is Q1, and after the duration Q1 ends, the sending period of the data packet sent by the corresponding tire condition monitoring device is P2, wherein P2 is greater than P1. Conventionally, the tire condition monitoring device collects the status information of the tire and sends it to the outside. In the case of identifying the vehicle tire as a spare tire, the sending period of the data packet sent by the tire condition monitoring device is P1, and the duration is The transmission method of Q1 can ensure the rapid realization of the active learning function of the spare tire. After the duration of Q1 is over, the transmission cycle P1 is reduced to P2. This is to take into account the low power consumption mode of the spare tire and extend the setting in the spare tire to a greater extent. battery life of your tire condition monitoring device. More preferably, the sending period P1 is once every minute, the duration Q1 is 1 hour, and the sending period P2 is once every 10 minutes.

Preferably, if the working mode of the tire is the spare tire mode, a spare tire mode flag is set in the data packet sent by the tire condition monitoring device. More preferably, the vehicle ECU receives all tire condition monitoring devices of the vehicle

The sent data packet determines the working mode of all tires according to the spare tire mode flag. Specifically, if there is a spare tire mode flag in the received data packet, it is determined that the data packet is sent by the tire condition monitoring device on the spare tire. If there is no spare tire mode flag in the received data packet, it is determined that the data packet is sent by the tire condition monitoring device on the positive tire.

Preferably, the tire condition monitoring device periodically acquires the second signal corresponding to the tire, and the second signal includes

The tire pressure value of the tire is included, and the data packet sent by the tire condition monitoring device includes the second signal;

The vehicle ECU receives the data packet, and determines the working mode of the tire according to the spare tire mode flag, if the working mode is the spare tire mode, then judges whether the tire pressure value of the corresponding tire is less than the fifth set threshold value, if less than, then

It is judged that the tire needs to be inflated. The fifth set threshold is the minimum working tire pressure value, which is to ensure that the spare tire reaches 5 to the minimum working tire pressure value. Once the vehicle is running, there is a problem with the positive tire, and it is necessary to switch between the positive tire and the spare tire.

If the spare tire is lower than the working tire pressure value, the replaced spare tire will cause the area in contact with the road to increase, causing the internal temperature of the tire to rise. Long driving time will increase the damage and aging of the internal structure of the tire, thereby reducing the tire The service life of the tire; tires below the working tire pressure value are easy to wear, which will reduce the handling performance of the vehicle, and the vehicle will drift sideways during driving, which will threaten the safe operation of the vehicle.

0. FIG. 2 shows a schematic structural diagram of a tire condition monitoring device according to an embodiment of the present invention. as the picture shows,

The present invention also provides a tire condition monitoring device 200 . The tire condition monitoring device 200 is used to implement the aforementioned method for recognizing the working mode of the vehicle tire. The tire condition monitoring device 200 mainly includes an acquiring unit 201 , a judging unit 202 , a technical unit 203 , a timing unit 204 and an identifying unit 205 .

The acquiring unit 201 is configured to periodically acquire a first signal corresponding to the tire, and the first signal is used to characterize the rotation state of the tire;

The judging unit 202 is configured to determine whether the tire rolls based on the first signal;

The counting unit 203 is used to count the number of tire rolling movements;

The timing unit 204 is used to calculate the length of time when the tire does not roll;

The identification unit 205 is used to identify the working mode of the tire based on the number of tire rolling motions or the duration of non-rolling.

Preferably, the preset value of the number of times of rolling motion of the tire and the preset value of the duration of non-rolling are set in the identification unit 205; if the number of times of rolling motion of the corresponding tire exceeds the preset value, it is judged that the working mode of the tire is the positive tire mode , otherwise it is the spare tire mode;

And/or, if the non-rolling duration of the corresponding tire exceeds the preset value, it is judged that the working mode of the tire is the spare tire mode, otherwise it is the normal tire mode.

Preferably, the first signal includes the rotation speed value or the rotation acceleration value of the tire; if the rotation speed value or the rotation acceleration value is greater than the first set threshold, the counting unit 203 accumulates the number of tire rolling motions; if the rotation speed value or If the rotational acceleration value is not greater than the first set threshold, the timing unit 204 accumulates the duration of no scrolling.

Preferably, the second setting threshold and the setting threshold are set at the identification unit 205; if the rolling movement times RollNum of the tire is counted and accumulated greater than the second setting threshold, then the working mode of the identification tire is the positive tire mode, and the Clear the duration of non-rolling and the number of rolling motions RollNum; if the duration of the tire without rolling is greater than the set threshold, the working mode of the tire is identified as the spare tire mode, and the duration of non-rolling of the tire is cleared and rolling occurs The number of times RollNum is cleared.

Preferably, the set threshold includes a third set threshold and a fourth set threshold; if it is judged that the tire pressure value of the tire is not less than the preset value and the duration of non-rolling is greater than the third set threshold, the identification unit 205 identifies the tire's The working mode is the spare tire mode; or it is judged that the tire pressure value of the tire is less than the preset value and the duration of no rolling is greater than the fourth set threshold, then the identification unit 205 identifies the working mode of the tire as the spare tire mode, wherein the fourth set threshold Much smaller than the third set threshold setting.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention that come within the scope of the appended claims and their equivalents.

Claims (10)

1. A vehicle tire working mode recognition method, the working mode includes a normal tire mode and a spare tire mode, the normal tire mode is used to characterize that the tire is in use, and the spare tire mode is used to characterize the tire In the standby state, each vehicle tire is equipped with a tire condition monitoring device, and the identification method includes the following steps: S1, the tire condition monitoring device periodically acquires a first signal corresponding to the tire, and the first signal is used to represent the rotation state of the tire; S2. Determine whether the tire is rolling based on the first signal. If rolling occurs, accumulate the number of rolling movements, and if rolling does not occur, accumulate the duration of non-rolling; S3. Identify the working mode of the tire based on the number of rolling motions or the duration of non-rolling. 2. The vehicle tire working mode recognition method according to claim 1, wherein in said step S3, if the number of rolling motions of the corresponding tire exceeds a preset value, then it is judged that the working mode of the tire is the normal tire mode, otherwise For the spare tire mode; And/or, if the non-rolling duration of the corresponding tire exceeds the preset value, it is judged that the working mode of the tire is the spare tire mode, otherwise it is the normal tire mode. 3. The vehicle tire working mode recognition method according to claim 2, wherein the first signal comprises a rotational speed value or a rotational acceleration value of the tire; In step S2, if the rotation speed value or the rotation acceleration value is greater than the first set threshold value, then count and accumulate the number of rolling motions RollNum of the tire; if the rotation speed value or the rotation acceleration value is not greater than the first set threshold value, then Accumulated duration without scrolling. 4. The vehicle tire working mode recognition method according to claim 2, characterized in that, in step S3, if the rolling movement times RollNum count of the tire is accumulated greater than the second set threshold, the working mode of the tire is identified For the positive tire mode, clear the non-rolling duration of the tire and the RollNum of the number of rolling movements of the tire; If the non-rolling duration of the tire is greater than the set threshold, the working mode of the tire is identified as the spare tire mode, and the non-rolling duration and RollNum of the tire’s rolling movement times are reset to zero. 5. The vehicle tire working mode recognition method according to claim 4, characterized in that: the set threshold includes a third set threshold and a fourth set threshold; If it is judged that the tire pressure value of the tire is not less than the preset value and the duration of no rolling is greater than the third set threshold, then the working mode of the tire is identified as the spare tire mode; Or if it is judged that the tire pressure value of the tire is less than the preset value and the duration of non-rolling is greater than the fourth set threshold, then the working mode of the tire is identified as the spare tire mode, wherein the fourth set threshold is much smaller than the third set threshold Threshold setting. 6. The vehicle tire working mode recognition method according to claim 1, wherein the working mode of the tire is switched from the normal tire mode to the spare tire mode, and the working mode of the tire is identified as the spare tire mode Afterwards, the sending period of the data packet sent by the corresponding tire condition monitoring device is P1, and the duration is Q1. After the duration Q1 is over, the sending period of the data packet sent by the corresponding tire condition monitoring device is is P2, where P2 is greater than P1. 7. The vehicle tire working mode recognition method according to claim 1, wherein if the working mode of the tire is the spare tire mode, a spare tire is set in the data packet sent by the tire condition monitoring device. mode flag. 8. The vehicle tire working mode recognition method according to claim 7, wherein the vehicle ECU receives the data packets sent by all tire condition monitoring devices of the vehicle, and determines the working modes of all tires according to the spare tire mode flag bit . 9. The vehicle tire working mode recognition method according to claim 8, wherein the tire condition monitoring device periodically acquires a second signal corresponding to the tire, and the second signal includes the tire pressure value of the tire, so The data packet sent externally by the tire condition monitoring device includes the second signal; The vehicle ECU receives the data packet, and determines the working mode of the tire according to the spare tire mode flag, and if the working mode is the spare tire mode, then judges whether the tire pressure value of the corresponding tire is less than the fifth set threshold, If less, it is judged that the tire needs to be inflated. 10. A tire condition monitoring device for realizing the vehicle tire working mode recognition method according to claim 1, characterized in that it comprises: an acquisition unit, configured to periodically acquire a first signal corresponding to the tire, the first signal being used to represent the rotation state of the tire; a judging unit, configured to determine whether the tire rolls based on the first signal; A counting unit, for counting the number of rolling motions of the tire; A timing unit for calculating the time when the tire does not roll; The identifying unit is configured to identify the working mode of the tire based on the number of rolling motions of the tire or the duration of non-rolling.

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