Tire safety detection method and device

[0066] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, many specific details are explained in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0067] The serial numbers assigned to the parts herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. The terms "connection" and "connection" in this application, unless otherwise specified, include direct and indirect connection (connection). In the description of this application, it should be understood that the terms “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, The orientation or positional relationship indicated by "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is 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 , Rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.

[0068] In this application, unless expressly stipulated and defined otherwise, the “on” or “under” of the first feature on the second feature may be in direct contact with the first and second features, or indirectly through an intermediary. contact. Moreover, the "above", "above", and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than the second feature. The first feature "below", "below" and "below" the second feature can mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

[0069] This application provides a tire safety detection method and a tire safety detection device. The tire safety detection device can be installed on automobile tires and used to implement the tire safety detection method of the present application, thereby facilitating the user to obtain the safety status of the tire in time and making the safety detection of the tire more convenient.

[0070] Such as figure 1 As shown, a tire safety inspection method includes:

[0071] S100: Acquire performance parameters of the tire in the first time period, where the performance parameters include at least one of the tire inflation times, the leak times, the inflation interval time, and the driving time.

[0072] The first time period is generally a continuous time period. In this embodiment, the time may be divided by using the first time period as an interval unit, so as to facilitate the tire safety detection method of the present application to obtain tire performance parameters in the first time period.

[0073] The first time period here can be freely set by the user, or it can be preset as a fixed time period by the system. For example, when the user wants to grasp the safety status of tires in the past three months, the first period can be set to three months from a certain year, month, day to a certain year, month, day. At this time, the tire safety inspection method of this application You can get the tire performance parameters set by the user in three months. In other embodiments, the tire safety inspection method of the present application can also preset the first period of time to three months, so that when the user wants to know the tire safety status, the tire safety inspection method of the present application obtains the information for nearly three months. Performance parameters of the inner tire.

[0074] The performance parameters of the tire include at least one of the number of tire inflations, the number of leaks, the interval between inflation, and the driving time. Here, the number of inflations, the number of leaks, the interval between inflations, and the driving time all refer to the performance parameters of the tire in the first period.

[0075] S200: Generate a first multi-dimensional performance value of the tire according to the performance parameter of the tire in the first time period.

[0076] According to the performance parameters of the tire in the first time period, a multi-dimensional performance value of the tire is generated. That is, after acquiring at least one of the number of inflations, the number of leaks, the inflation interval, and the driving time of the tire in the first time period, various performance parameters of the tire are processed to obtain multi-dimensional performance values.

[0077] The multi-dimensionality here refers to at least one of the number of inflations, the number of leaks, the interval between inflation and the driving time of the tire in the first time period. The multi-dimensional performance value here can be a table containing various performance parameters; it can also be a histogram containing various performance parameters; it can also be a multi-pointed awn star pattern containing various performance parameters, which is not limited here. Generally speaking, the multi-dimensional performance value here should include various performance parameters of the tire obtained in step S100.

[0078] For ease of description, in step S200, the multi-dimensional performance value of the tire generated according to the performance parameter of the tire in the first time period is named the first multi-dimensional performance value.

[0079] S300: Generate a first wireless communication signal including a first multi-dimensional representation value, and transmit the first wireless communication signal.

[0080] The first wireless communication signal including the first multi-dimensional performance value is generated, that is, the first multi-dimensional performance value obtained in step S200 is converted into the first wireless communication signal.

[0081] The tire safety detection method of the present application can obtain at least one of the tire inflation times, the leak times, the inflation interval time, and the driving time in the first time period, and generate the first multi-dimensional performance value of the tire according to the tire safety detection method. The tire safety detection method of the present application may also convert the first multi-dimensional performance value into a first wireless communication signal and transmit it. At this time, the user can obtain the first wireless communication signal through a mobile terminal such as a mobile phone, a portable computer, or a smart watch, and then obtain the first multi-dimensional performance value of the tire in the first time period. In this way, the user can monitor the first multi-dimensional performance value of the tire in real time, thereby facilitating the user to obtain the safety status of the tire in time, and making the safety detection of the tire more convenient.

[0082] In one embodiment, such as figure 2 As shown, the tire safety detection method of the present application, before step S100, further includes:

[0083] S001: In the first time period, the tire pressure value is acquired every second time period, the first time period is greater than the second time period, and the tire pressure value is acquired at least twice in the first time period.

[0084] Specifically, the purpose of the invention of this application is to obtain various performance parameters of the tire in the first period of time, and arrange the various performance parameters of the tire to generate the first multi-dimensional performance value of the tire, and finally the first multi-dimensional performance value of the tire The dimension performance value is sent to the user. Among them, the performance parameters of the tire may include the number of tire inflations, the number of leaks, and the interval between inflations.

[0085] In order to achieve the above objective, the tire safety detection method of the present application needs to obtain the tire pressure value multiple times in the first time period. The multiple here refers to two or more times. In order to improve the intuitiveness and accuracy of the tire safety detection method, in this embodiment, the time interval between two adjacent acquisitions of the tire air pressure value is equal, which is the second time period. Therefore, it can also be said that the tire pressure value is acquired once every second time interval, and the tire pressure value is acquired at least twice in the first time interval.

[0086] In this embodiment, since it is necessary to make the time interval between the two consecutive acquisitions of tire air pressure values ​​be the second time period, each time the air pressure value is acquired, each air pressure value is bound to a unique clock signal , And the clock signal corresponding to each air pressure value is the time to obtain the air pressure value, and will not be repeated here.

[0087] Further, in the tire safety inspection method of the present application, the step S100 includes:

[0088] S110: Acquire tire inflation times in the first time period.

[0089] Specific, such as image 3 As shown, step S110 includes:

[0090] S112: Obtain a line graph of changes in the air pressure value over time in the first time period.

[0091] In step S001, in the first time period, the tire pressure value is obtained every second time period. Therefore, in this step, a line graph of the change of the air pressure value with time can be drawn directly according to the obtained tire air pressure value and each time the tire air pressure value is obtained. In an embodiment, the line graph of the change in air pressure value over time can be as Figure 4 Shown.

[0092] Figure 4 In the illustrated embodiment, the air pressure value is acquired every second time interval t2. From the beginning of the first period to the end of the first period t1, a total of seven air pressure values ​​are obtained.

[0093] S114: Obtain the change slope of the air pressure value with time in each second time period according to the change line graph.

[0094] That is Figure 4 In the illustrated embodiment, obtain the slope of the line segment from 0 to t2, the slope of the line segment from t2 to 2t2; the slope of the line segment from 2t2 to 3t2; the slope of the line segment from 3t2 to 4t2; the line segment from 4t2 to 5t2. The slope; the slope of the line segment from 5t2 to t1.

[0095] S116: Determine the relationship between the slope of change and the first threshold, and if the slope of change is greater than the first threshold, mark the second period in which the slope of change greater than the first threshold is located as an inflation period.

[0096] Generally speaking, if the tire does not leak or is not inflated within a continuous period of time, the air pressure of the tire should remain unchanged or decrease slowly or increase slowly due to temperature changes. If the tire is inflated, the air pressure of the tire will rise rapidly. Based on this, after determining the change slope of the air pressure value with time in each second time period in step S114, the relationship between each change slope and the first threshold can be determined to determine whether the tire is inflated in each time period.

[0097] The judgment process is: if the slope of the change is greater than the first threshold, the second period of the slope of the change is marked as the inflation period; if the slope of the change is not greater than the first threshold, the second period of the slope of the change is not marked as the inflation Time period.

[0098] For example, in Figure 4 In the illustrated embodiment, in the period 0-t2, period t2-2t2, period 2t2-3t2, period 4t2-5t2, and period 5t2-t1, the slope of change is less than the first threshold; in period 3t2-4t2, the slope of change is greater than the first threshold. A threshold. In this way, the second period corresponding to 3t2-4t2 can be marked as the inflation period.

[0099] S118: Obtain the number of inflation periods, and obtain the tire inflation times.

[0100] That is, the number of times marked as the inflation period in the first period is obtained, and then the tire inflation times can be obtained.

[0101] Furthermore, in the tire safety detection method of the present application, step S100 may further include:

[0102] S120: Acquire the number of tire leaks in the first time period.

[0103] Specific, such as Figure 5 As shown, step S120 includes:

[0104] S122: Obtain a line graph of changes in the air pressure value over time in the first time period.

[0105] In step S001, in the first time period, the tire pressure value is obtained every second time period. Therefore, in this step, a line graph of the change of the air pressure value with time can be drawn directly according to the obtained tire air pressure value and each time the tire air pressure value is obtained. In an embodiment, the line graph of the change in air pressure value over time can be as Image 6 Shown.

[0106] S124: Obtain the change slope of the air pressure value with time in each second time period according to the change line chart.

[0107] That is Image 6 In the illustrated embodiment, obtain the slope of the line segment from 0 to t2, the slope of the line segment from t2 to 2t2; the slope of the line segment from 2t2 to 3t2; the slope of the line segment from 3t2 to 4t2; the line segment from 4t2 to 5t2. The slope; the slope of the line segment from 5t2 to t1.

[0108] S126: Determine the relationship between the change slope and the second threshold. If the change slope is less than the second threshold, mark the second time period in which the change slope is less than the second threshold as a leak period.

[0109] Generally speaking, if the tire does not leak or is not inflated within a continuous period of time, the air pressure of the tire should remain unchanged or decrease slowly or increase slowly due to temperature changes. If the tire is flat, the tire pressure will drop rapidly. Based on this, after determining the change slope of the air pressure value with time in each second time period in step S124, it is possible to determine whether the tire leaks in each time period by judging the relationship between each change slope and the second threshold value.

[0110] The judgment process is: if the change slope is less than the second threshold, the second time period in which the change slope is located is marked as a leak period; if the change slope is not less than the second threshold, the second time period in which the change slope is located is not marked as Leak period.

[0111] For example, in Image 6 In the illustrated embodiment, in the 0-t2 period, t2-2t2 period, 2t2-3t2 period, 4t2-5t2 period, and 5t2-t1 period, the change slope is greater than the second threshold; in the 3t2-4t2 period, the change slope is less than the first Two thresholds. In this way, the second period corresponding to 3t2-4t2 can be marked as a leak period.

[0112] If combined with step S110 in the previous embodiment, the second period corresponding to 4t2-5t2 can be further marked as the inflation period.

[0113] It should be noted that, in this embodiment, when comparing the slope of change with the second threshold, the sign of the slope of change is taken into consideration. In other embodiments, if the sign of the change slope is not considered but only the quality of the change slope is considered, then when the value of the change slope is greater than a certain threshold, the second time period in which the change slope is located is marked as a leak Time period. No longer.

[0114] S128: Obtain the number of air leak periods to obtain the number of tire air leaks.

[0115] That is, the number of air leaks marked as air leaks in the first time interval is obtained, and the air leak times of the tire are obtained.

[0116] Further, in the tire safety detection method of the present application, the step S100 further includes:

[0117] S130: Obtain the tire inflation interval time in the first time period.

[0118] Specific, such as Figure 7 As shown, step S130 includes:

[0119] S132: Obtain a line graph of changes in the air pressure value over time in the first time period.

[0120] S134: Obtain the change slope of the air pressure value with time in each second time period according to the change line graph.

[0121] S136: Determine the relationship between the slope of change and the first threshold, and if the slope of change is greater than the first threshold, mark the second period in which the slope of the change is greater than the first threshold as an inflation period.

[0122] S138: Obtain the time difference between two adjacent inflation periods to obtain the tire inflation interval time.

[0123] Steps S132 to step 136 are the same as steps S112 to step 116, and will not be repeated.

[0124] After marking the second period with a change slope greater than the first threshold as an inflation period, the time difference between two adjacent inflation periods is obtained. The time difference between two adjacent inflation periods can be the time difference between the start time of the first inflation period and the start time of the second inflation period in the two adjacent inflation periods; it can also be the two adjacent inflation periods , The time difference between the end time of the first inflation period and the end time of the second inflation period; it can also be between the middle time of the first inflation period and the middle time of the second inflation period in two adjacent inflation periods Time difference.

[0125] The time difference between two adjacent inflation periods is the tire inflation interval.

[0126] In one embodiment, in order to accurately detect the number of inflations, the number of leaks, and the inflation time interval of the above-mentioned tires, the second time period between the detection of the air pressure values ​​of two adjacent tires should be greater than the time required for one tire inflation. For example, if a tire requires ten minutes to inflate at a time, the second period can be set to ten minutes, twenty minutes, or thirty minutes.

[0127] In another embodiment, after step S116, the method further includes:

[0128] S117: If two or more consecutive second periods are marked as inflation periods, then two or more second periods are marked as one inflation period.

[0129] This step is aimed at the situation that the duration of the second time period is too short, so that the tire continues to inflate in two or more second time periods. In order to avoid repeated markings, in this embodiment, two or more second periods marked as inflation periods may be marked as one inflation period. In other words, adding up multiple consecutive inflation periods into one inflation period can avoid the situation of multiple calculations for one inflation.

[0130] Similarly, in an embodiment, after step S126, it may also include:

[0131] S127: If two or more consecutive second time periods are all marked as leaking periods, mark the two or more second time periods as one leaking period.

[0132] This step is also for the case where the second time period is too short, so that the tire continues to leak in two or more second time periods. In order to avoid repeated markings, in this embodiment, two or more second time periods marked as leaking periods may be marked as one leaking period. In other words, the number of consecutive air leakage periods is totaled into one air leakage period, so as to avoid the situation of multiple calculations for one air leakage.

[0133] Similarly, in an embodiment, after step 136, it may also include:

[0134] S137: If two or more consecutive second periods are marked as inflation periods, mark the two or more second periods as one inflation period.

[0135] Step S137 is the same as step S117 and will not be described again.

[0136] In one embodiment, such as Figure 8 As shown, the tire safety detection method of the present application, before step S100, further includes:

[0137] S002: In the first time period, continuously obtain the acceleration value of the tire.

[0138] Specifically, the purpose of the invention of this application is to obtain various performance parameters of the tire in the first period of time, and arrange the various performance parameters of the tire to generate the first multi-dimensional performance value of the tire, and finally the first multi-dimensional performance value of the tire The dimension performance value is sent to the user. Among them, the performance parameters of the tire may include the driving time of the tire.

[0139] In order to achieve the above objective, the tire safety detection method of the present application needs to continuously obtain the acceleration value of the tire during the first time period. Obtaining the acceleration value of the tire here refers to obtaining the linear acceleration value of a certain point on the tire. Generally speaking, when a car is running, its tires are constantly rotating. Therefore, whether the car is moving at a constant speed, accelerating or decelerating, the linear acceleration at any point on the tire is always non-zero; only when the car is stationary, the acceleration at any point on the tire will be zero. In this embodiment, the driving time of the tire can be monitored based on this principle.

[0140] Further, in the tire safety detection method of the present application, the step S100 further includes:

[0141] S140: Acquire the driving time of the tire in the first time period.

[0142] Specific, such as Picture 9 As shown, step S140 includes:

[0143] S142: Obtain a graph of the change in acceleration value over time in the first time period.

[0144] In step S002, the acceleration value of the tire has been continuously acquired in the first time period. Therefore, in this step, a graph of the acceleration value versus time can be drawn directly according to the obtained tire acceleration value and time. In one embodiment, the curve of the acceleration value over time can be as Picture 10 Shown.

[0145] Picture 10 In the illustrated embodiment, the first time period contains multiple regions where the acceleration value is zero and the acceleration value is not zero.

[0146] S114: Acquire the total time period during which the acceleration value is not zero in the first time period according to the change curve graph, that is, the driving time period of the tire.

[0147] Specifically, in step S002, the acquired acceleration value is the linear acceleration value of a certain point on the tire. As mentioned above, the tires are constantly rotating during the movement of a car. Therefore, no matter if the car is moving at a constant speed, accelerating or decelerating, the linear acceleration of any point on the rotating tire is always non-zero; When stationary, the acceleration at any point on the tire will be zero.

[0148] Based on this, the total time period during which the acceleration value is not zero in the first time period is obtained, which is the driving time period of the tire.

[0149] In one embodiment, such as Picture 11 As shown, the tire safety detection method of the present application further includes after step S200:

[0150] S410: Acquire performance parameters of the tire in a third time period, where the third time period and the first time period do not overlap each other.

[0151] The third time period is generally also a continuous time period. In this embodiment, the third period and the first period do not overlap each other. In this embodiment, the first time period can be understood as the time period closest to the user's desire to grasp the tire safety state; the third time period can be understood as the historical time period of the tire safety state before the first time period. In other words, the third period is the first period in the past, and the first period is the third period in the future. There is no difference between the first period and the third period except for the time sequence. The third time period can also be set by the user, or pre-set by the system as a fixed time period, which will not be repeated.

[0152] S420: Generate a second multi-dimensional performance value of the tire according to the performance parameter of the tire in the third time period.

[0153] That is, according to the performance parameters of the tire in the third period, the multi-dimensional performance value of the tire is generated. To facilitate distinction and description, the multi-dimensional performance value generated according to the performance parameters of the tire in the third time period is named the first multi-dimensional performance value.

[0154] Generally, the second multi-dimensional performance value can be presented in the same manner as the first multi-dimensional performance value. For example, the first multi-dimensional performance value is a table containing various performance parameters in the first time period, and the second multi-dimensional performance value may be a table containing various performance parameters in the third time period; the first multi-dimensional performance value Is a histogram containing various performance parameters in the first time period, then the second multi-dimensional performance value can be a histogram containing various performance parameters in the third time period; the first multi-dimensional performance value includes the first time period The second multi-dimensional performance value can be a star chart containing various performance parameters in the third time period.

[0155] S430: Generate a second wireless communication signal including the first multi-dimensional performance value and the second multi-dimensional performance value, and transmit the second wireless communication signal.

[0156] A second wireless communication signal containing both the first multi-dimensional performance value and the second multi-dimensional performance value is generated, and the second wireless communication signal is transmitted.

[0157] It should be noted that this step S430 essentially includes the above step S300. Therefore, after step S430 is executed, step S300 may be executed separately, or step S300 may not be executed, which is not limited here.

[0158] The tire safety detection method in this embodiment can not only generate the first multi-dimensional performance value according to the performance parameter of the tire in the first time period, but also can generate the second multi-dimensional performance value according to the performance parameter of the tire in the third time period. After the second wireless communication signal is sent to the user, the user can obtain the first multi-dimensional performance value and the second multi-dimensional performance value at the same time, thereby facilitating the user to compare the first multi-dimensional performance value and the second multi-dimensional performance value. In this way, it is possible to further facilitate the user to obtain the safety status of the tire in time, and improve the convenience of tire safety detection.

[0159] In an embodiment, the present application also provides a tire safety detection device. The tire safety detection device is provided in the tire and is used to implement the tire safety detection method in any one of the above embodiments.

[0160] Such as Picture 12 As shown, the tire safety detection device includes at least one of a pressure sensor and an acceleration sensor, and further includes: a processing controller connected with the air pressure sensor and the acceleration sensor; a clock generator connected with the processing controller; The memory is connected to the processing controller; the communicator is connected to the processing controller.

[0161] Specifically, the air pressure sensor is used to detect the tire air pressure value at a certain moment; the clock generator is used to generate a clock signal. After the air pressure sensor detects the air pressure value of the tire, it can transmit the air pressure value of the tire to the processing controller. At this time, the controller can obtain a clock signal at the same time, and bind the clock signal to the air pressure value of the tire to obtain a time-stamped air pressure value. The controller may obtain the tire pressure value every second time interval.

[0162] The acceleration sensor is used to detect the acceleration value of the tire, specifically to detect the linear acceleration of a certain point of the tire. After the acceleration sensor detects the acceleration value of the tire, it can transmit the acceleration value of the tire to the processing controller. At this time, the controller can obtain a clock signal at the same time, and bind the clock signal to the acceleration value of the tire to obtain a time-stamped acceleration value. The controller can continuously obtain the acceleration value of the tire in the first time period.

[0163] After the controller obtains the time-stamped air pressure value of the tire and the time-stamped acceleration value, it can be transferred to the memory for storage.

[0164] At the same time, the tire safety detection device of the present application implements the above tire safety detection method, and the processing controller can also obtain the tire inflation times, leak times, and inflation interval time according to the time-stamped pressure value; it can be based on the time-stamped acceleration value The driving time to the tire. No longer.

[0165] After the processing controller obtains the number of inflations, the number of leaks, the inflation interval, and the driving time of the above-mentioned tire, it generates the first multi-dimensional performance value and transmits it to the communicator. The communicator may generate a first wireless communication signal including the first multi-dimensional performance value according to the first multi-dimensional performance value, and transmit the first wireless communication signal.

[0166] In this way, the user can obtain the safety status of the tire in time and make the safety inspection of the tire more convenient.

[0167] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

[0168] The above-mentioned embodiments only express several implementation modes of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.