Information processing device, information processing method, and information processing program

Abstract

This information processing device acquires a tire internal temperature, and if the acquired tire internal temperature is at least a first temperature, changes the form of notification of a warning for notifying a user of an increase in the tire internal temperature, according to a predicted time until the tire internal temperature reaches a second temperature set to be a temperature higher than the first temperature.

Description

Information processing device, information processing method, and information processing program

[0001] The present disclosure relates to an information processing device, an information processing method, and an information processing program.

[0002] Methods for determining the remaining life and end of life of a run-flat tire that continues to be driven in a run-flat state have been disclosed (see, for example, International Publication No. 2004 / 014671).

[0003] For example, heavy machinery used in mining sites travels on unpaved roads, trampling rocks with its tires, and may transport rocks weighing hundreds of tons. Therefore, tires are subject to more stress than vehicles that primarily travel on paved roads, and tire temperatures tend to rise.

[0004] If such heavy machinery continues to run with the tire temperature above a certain level, for example, tire failure may occur, causing unplanned interruptions to work.

[0005] Unplanned work interruptions reduce the utilization rate of heavy machinery, which also affects mining plans. Therefore, heavy machinery drivers and vehicle operation managers refer to tire temperatures measured by TPMS (Tire Pressure Monitoring System) and manage driving and vehicle operation to prevent tire temperatures from rising. However, it is not easy to determine how to drive in a way that prevents tire temperatures from rising, and in reality, tire temperatures sometimes reach a temperature that poses a risk of malfunction, resulting in work interruptions. Therefore, a method is needed to notify drivers and vehicle operation managers that tire temperatures may reach a temperature that poses a risk of malfunction.

[0006] The present disclosure aims to provide an information processing device, an information processing method, and an information processing program that can notify a driver, a vehicle operation manager, etc. of the temperature status of a tire along with information indicating the time it will take for the tire to reach a specific temperature.

[0007] The information processing device of the first aspect includes an acquisition unit that acquires the temperature inside the tire, and a control unit that, when the temperature inside the tire acquired by the acquisition unit is equal to or higher than a predetermined first temperature, controls to change the notification format of an alarm that notifies a user of a rise in the temperature inside the tire, depending on a predicted time until the temperature inside the tire reaches a second temperature that is set to be higher than the first temperature.

[0008] In the information processing device of the second aspect, in the information processing device of the first aspect, the control unit performs control to change the notification form of the alarm so that the user can easily recognize the alarm as the predicted time becomes shorter.

[0009] An information processing device according to a third aspect is the information processing device according to the second aspect, wherein the control unit performs control to change the display color of the display area that displays the tire internal temperature in accordance with the predicted time.

[0010] In the information processing device of the fourth aspect, in the information processing device of the second or third aspect, the control unit performs control to change at least one of whether or not the display area displaying the temperature inside the tire blinks and the blinking interval depending on the predicted time.

[0011] In the information processing device of the fifth aspect, in the information processing device of the fourth aspect, the control unit starts blinking of the display area when the predicted time falls within a predetermined first hour, and performs control to shorten the blinking interval of the display area as the predicted time becomes shorter than the first hour.

[0012] An information processing device according to a sixth aspect is an information processing device according to any one of the second to fifth aspects, wherein the control unit controls the display of the display area so that the filled-in area of ​​the display area displaying the temperature inside the tire in a predetermined display color becomes larger as the predicted time becomes shorter.

[0013] An information processing device according to a seventh aspect is an information processing device according to any one of the first to sixth aspects, wherein the control unit controls the acquisition unit so that the longer the prediction time, the longer the interval until the tire internal temperature is newly acquired.

[0014] An information processing device according to an eighth aspect is the information processing device according to any one of the first to seventh aspects, wherein the control unit performs control to display the predicted time together with the warning.

[0015] An information processing device according to a ninth aspect is an information processing device according to any one of the first to eighth aspects, wherein the second temperature is set a temperature that is shifted by a predetermined temperature from a danger temperature, which is a temperature at which the risk of tire failure exceeds a specific level if the tire whose internal tire temperature has been acquired continues to run.

[0016] In an information processing device according to a tenth aspect, in the information processing device according to the ninth aspect, the predetermined temperature is a temperature calculated from the distribution of the difference between the tire internal temperature and a predicted tire internal temperature, which is a predicted value of the tire internal temperature at the time the tire internal temperature is acquired.

[0017] An information processing method according to an eleventh aspect is a method in which a computer executes a process of acquiring an internal tire temperature, and if the acquired internal tire temperature is equal to or higher than a predetermined first temperature, changing the notification format of an alarm notifying a user of a rise in internal tire temperature, depending on a predicted time until the internal tire temperature reaches a second temperature that is set to be higher than the first temperature.

[0018] The information processing program of the twelfth aspect is a program for causing a computer to acquire an internal tire temperature, and if the acquired internal tire temperature is equal to or higher than a predetermined first temperature, execute a process of changing the notification format of an alarm notifying a user of a rise in internal tire temperature, depending on a predicted time until the internal tire temperature reaches a second temperature that is set to be higher than the first temperature.

[0019] An information processing device according to a thirteenth aspect includes an acquisition unit that acquires the temperature inside a tire of a vehicle, and a control unit that, when the temperature inside the tire acquired by the acquisition unit is equal to or higher than a predetermined first temperature, transmits a predicted time until the temperature inside the tire reaches a second temperature set to a temperature higher than the first temperature to an automatic control device that autonomously controls the driving of the vehicle so that the temperature inside the tire becomes lower than the second temperature.

[0020] An information processing method according to a fourteenth aspect is a method in which a computer executes a process of acquiring an internal tire temperature of a vehicle, and if the acquired internal tire temperature is equal to or higher than a predetermined first temperature, transmitting a predicted time until the internal tire temperature reaches a second temperature set to a temperature higher than the first temperature to an automatic control device that autonomously controls the driving of the vehicle so that the internal tire temperature becomes lower than the second temperature.

[0021] An information processing program according to a fifteenth aspect is a program for causing a computer to acquire the temperature inside a tire of a vehicle, and, if the acquired temperature inside the tire is equal to or higher than a predetermined first temperature, transmit a predicted time until the temperature inside the tire reaches a second temperature set to a temperature higher than the first temperature to an automatic control device that autonomously controls the driving of the vehicle so that the temperature inside the tire becomes lower than the second temperature.

[0022] An information processing device according to a sixteenth aspect includes an acquisition unit that acquires the temperature inside a tire of a vehicle, and a control unit that, when the temperature inside the tire acquired by the acquisition unit is equal to or higher than a predetermined first temperature, autonomously controls the driving of the vehicle so that the temperature inside the tire is less than a second temperature set to a temperature higher than the first temperature, in accordance with a predicted time until the temperature inside the tire reaches the second temperature set to a temperature higher than the first temperature.

[0023] An information processing method according to a seventeenth aspect is a method in which a computer acquires a temperature inside a tire of a vehicle, and if the acquired temperature inside the tire is equal to or higher than a predetermined first temperature, autonomously controls the driving of the vehicle in accordance with a predicted time until the temperature inside the tire reaches a second temperature set to a temperature higher than the first temperature, so that the temperature inside the tire becomes lower than the second temperature.

[0024] The information processing program of the 18th aspect is a program for acquiring the temperature inside a tire of a vehicle, and if the acquired temperature inside the tire is equal to or higher than a predetermined first temperature, autonomously controlling the driving of the vehicle so that the temperature inside the tire is less than a second temperature set to a temperature higher than the first temperature, depending on a predicted time until the temperature inside the tire reaches the second temperature set to a temperature higher than the first temperature.

[0025] According to the present disclosure, it is possible to notify the driver, vehicle operation manager, etc. of the tire temperature status together with information indicating the time it will take for the tire to reach a specific temperature.

[0026] 1 is an example of a graph for explaining the transition and prediction of temperature inside a tire. FIG. 2 is a diagram showing an example of the functional configuration of an information processing device. FIG. 3 is a diagram showing an example of a cross section of a tire. FIG. 4 is a diagram showing an example of the configuration of an information processing device using a computer. FIG. 5 is a flowchart showing an example of the flow of an alarm process. FIG. 6 is a diagram showing an example of a level 3 alarm. FIG. 7 is a diagram showing an example of a level 2 alarm. FIG. 8 is a diagram showing an example of a level 1 alarm. FIG. 9 is a diagram showing an example of a blinking alarm icon. FIG. 10 is a diagram showing an example of a change in the alarm icon according to the arrival time. FIG. 11 is a flowchart showing an example of the flow of a prediction process. FIG. 12 is a diagram showing an example of a prediction of temperature inside a tire after a predetermined time has elapsed in the future, taking into account a prediction width. FIG. 13 is a flowchart showing a modified example of the prediction process.

[0027] Hereinafter, the present embodiment will be described with reference to the drawings. The same components and processes are denoted by the same reference numerals throughout the drawings, and duplicated explanations will be omitted. The dimensional proportions in the drawings are exaggerated for the sake of explanation, and may differ from the actual proportions.

[0028] In the first embodiment, a mode in which the time required to reach a predetermined specific temperature is predicted as the arrival time will be described. Also, in a modified example of the prediction process in the first embodiment, a mode in which the temperature after a predetermined time has elapsed is predicted to predict the arrival time required to reach the predetermined specific temperature will be described.

[0029] First Embodiment A first embodiment will be described below. First, an overview of the tire temperature prediction method of the present disclosure will be described. FIG. 1 is an example of a graph for illustrating the transition and prediction of the tire internal temperature. The vertical axis represents the temperature of the tire 2, and the horizontal axis represents time. Temperature α represents the acquired tire internal temperature, and temperature β represents a specific temperature higher than temperature α. Time x represents the most recent time at which the tire internal temperature was acquired, and is referred to as the "reference time point." In the first embodiment, tire information and the like are acquired for a period going back any time from the reference time point, and the time it takes for the tire internal temperature to reach temperature β from temperature α, i.e., the arrival time from the reference time point to time y, is predicted. Note that in the following description, the term "arrival time" simply refers to the time from the reference time point to time y. The predicted arrival time is an example of the "prediction time" of the present disclosure. Note that the information processing device 1 may predict the tire internal temperature each time time elapses from the reference time point. This is because if the temperature inside the tire can be predicted for each future time, the time it takes to reach the temperature β can be obtained.

[0030] FIG. 2 is a diagram illustrating an example of the functional configuration of an information processing device 1 according to the present disclosure. The information processing device 1 is a device that, when the tire internal temperature reaches or exceeds a predetermined temperature (hereinafter referred to as the “first temperature”) at which future tire internal temperature prediction should be initiated to prevent damage to the tire 2 due to heat generated as the temperature of the tire 2 (see FIG. 3 ) mounted on a vehicle, predicts the time it takes for the tire 2 to reach a predetermined critical temperature (hereinafter referred to as the “second temperature”) from a reference point in time, at which the tire 2 exceeds a specific level of risk of failure. The disclosed method is applicable not only to vehicles but also to any mobile object, such as a robot equipped with a tire 2. For ease of explanation, the first temperature may be referred to as “Tp1” and the second temperature as “Tp2.” The first temperature and the second temperature have a magnitude relationship of first temperature < second temperature. The phrase “the tire internal temperature reaches the second temperature” refers to the tire internal temperature reaching the second temperature.

[0031] There are no restrictions on where the information processing device 1 is installed; for example, it may be installed in each vehicle, but it may also be installed in a building (hereinafter referred to as an "operations control room") where an operations manager who manages the vehicles or the driving of each vehicle is located. For example, if the information processing device 1 is installed in an operations control room, the information processing device 1 provides the driver with information on the predicted arrival time by transmitting information via a wireless line to a monitor attached to the vehicle. If the vehicle is an autonomous vehicle, the information processing device 1 transmits information via a wireless line to an automatic control device attached to the vehicle, so that the automatic control device controls the driving of the vehicle according to the received information.

[0032] For ease of explanation, at least one of the driver, the operation manager, etc., who controls the driving of the vehicle, and the automatic control device will be collectively referred to as the "vehicle control entity." Of the vehicle control entities, the driver, the operation manager, etc. will be collectively referred to as the "user." Note that the information processing device 1 may be constructed using cloud computing.

[0033] There are no restrictions on the type of vehicle to which the information processing device 1 provides information, but hereinafter, an example will be described in which the arrival time is predicted for a vehicle that places a load on tire 2, such as heavy machinery used in mining sites, rather than for vehicles that mainly travel on paved roads.

[0034] 2, the information processing device 1 includes an acquisition unit 1A, a prediction unit 1B, a control unit 1C, and a data storage unit 1M. The data storage unit 1M stores a first temperature and a second temperature. The data storage unit 1M also stores various information acquired by the acquisition unit 1A.

[0035] The acquisition unit 1A acquires the tire internal temperature and acquires tire information including at least the tire internal temperature and outside air temperature data for a predetermined period going back from each reference point in time when the tire internal temperature reached or exceeded the first temperature. The acquisition unit 1A also acquires future temperature forecast information and heat generation history during driving. The predetermined period going back may be a specified time interval, such as 15 minutes, 30 minutes, or 1 hour, or may be an arbitrary period specified by the vehicle control entity when driving starts. Furthermore, a driving route may be acquired and different periods may be set depending on the driving route. Even if the driving route itself cannot be acquired, GPS information may be acquired to obtain vehicle location information, and different periods may be set for each area corresponding to the location information. The structure of the tire 2 and the tire internal temperature are described below.

[0036] FIG. 3 is a diagram showing an example cross section of a tire 2 mounted on a vehicle. The portion of the tire 2 that comes into contact with the road surface is called a tread 2A, and the tread 2A is provided with grooves 2C that expel water on wet road surfaces and prevent slippage when driving or braking forces are applied. For example, if the tread 2A runs over a rock on the road surface, the belt 2B stretched between the tread 2A and the carcass 2D may be damaged, causing the tread 2A and the belt 2B to separate. If the vehicle continues to run over rocks on the road surface, heat is generated as the tread 2A deforms, and heat accumulates in the space created between the tread 2A and the belt 2B due to the separation. This increases the temperature in the space, which may cause cracks in the tread 2A or the tread 2A to emit smoke.

[0037] That is, to detect the possibility of damage to the tire 2 due to heat, it is preferable to measure the temperature of the belt 2B (also referred to as the "tread temperature"). For example, one method for doing so is to insert a temperature sensor 14 (see FIG. 4) between the tread 2A and the belt 2B. However, this method requires consideration of the power supply method to the temperature sensor 14, the load-bearing capacity of the temperature sensor 14, and the influence of the temperature sensor 14 on the tread 2A and the belt 2B. Inserting the temperature sensor 14 between the tread 2A and the belt 2B requires many technical considerations and is a costly method. If the method of placing a temperature sensor between the belts is not used, a TPMS may be used. The acquisition unit 1A in FIG. 2 acquires the temperature (also referred to as the "chamber temperature") of the interior 2E of the tire 2 shown in FIG. 3 measured by a TPMS attached to the rim of the tire 2 from the vehicle via a communication line. The chamber temperature acquired from the vehicle in this manner is regarded as the tire internal temperature acquired by the acquisition unit 1A.

[0038] The acquisition unit 1A uses the tire internal temperature and outside air temperature data for each time during driving to calculate a value indicating the likelihood of heat generation during the most recent driving, and stores the calculated value in the data memory unit 1M as the heat generation history for each time.

[0039] The temperature prediction information is obtained using, for example, an outside temperature prediction model. The outside temperature prediction model is, for example, a model created from annual outside temperature data for the environment in which the vehicle is traveling. The outside temperature prediction model may be stored inside the information processing device 1, or may be stored on an external server and referenced each time temperature prediction information is obtained.

[0040] The acquisition unit 1A may further acquire position information of the tire 2, internal pressure information of the tire 2, and vehicle speed information as information acquired retroactively from the reference time point. The acquisition unit 1A may also acquire the load amount of cargo carried on the vehicle equipped with the tire 2. The tire internal temperature, outside air temperature data, position information of the tire 2, internal pressure information of the tire 2, vehicle speed information, load amount, etc. are examples of tire information.

[0041] The prediction unit 1B predicts the time it takes for the tire internal temperature to reach the second temperature from a reference point in time based on the tire information, the temperature prediction information, and the heat generation history. The time it takes for the tire internal temperature to reach the second temperature from the reference point in time can be calculated by predetermining an estimation formula using the tire internal temperature history, heat generation history, and predicted air temperature for a retroactively acquired period, and then calculating the tire internal temperature for each future time period from the estimation formula. Any regression method can be used for the estimation formula.

[0042] The method for predicting the time required for the tire temperature to reach the second temperature from the reference point in time is not limited to an estimation formula, and a simulation model using machine learning may also be used. Training the simulation model involves using training data in which input data including at least one of tire information, temperature forecast information, and heat generation history prior to the reference point in time is associated with the tire temperature at the reference point in time as output data. The tire information used as input data includes any of the tire temperature, tire 2 position information, generated force (G sensor) information, tire 2 internal pressure information, and vehicle speed information. The input data preferably includes at least the tire temperature. The prediction unit 1B may train a simulation model in advance using the training data, and input information used as input data for the model from tire information, temperature forecast information, and heat generation history for a predetermined period prior to the reference point in time to the simulation model, and use the tire temperature for each time output from the simulation model to predict the time required for the tire temperature to reach the second temperature from the reference point in time. Including weather information in the input data of the training data allows, for example, the effect of cooling or heat generation on the tire 2 to be taken into account. For example, the accuracy of arrival time predictions can be further improved by taking into account the cooling effect of getting wet in the rain, the cooling effect of a wet road surface after the rain has stopped, the cooling effect of wind, and heat generation due to sunlight.

[0043] Further, the simulation model may further include a route prediction model capable of predicting the temperature inside the tires for each driving route, an outside temperature prediction model capable of predicting the outside temperature, a weather prediction model, and a detection model capable of detecting whether the vehicle is loaded. When using a temperature prediction model for each driving route, the temperature prediction model may be trained in advance using tire information acquired for each driving route as training data. When using a load detection model, the detection model may be trained in advance using the weight of the vehicle labeled with whether it is loaded or not as training data. The detection model may also be trained for each driving route.

[0044] The control unit 1C performs control to change the notification format of the alarm that notifies the vehicle's controller of a rise in internal tire temperature, according to the arrival time predicted by the prediction unit 1B. Specifically, when the vehicle's controller is a user, the control unit 1C performs control to change the notification format of the alarm so that the user can easily recognize the alarm as the arrival time from the reference point to the second temperature becomes shorter. In other words, as the internal tire temperature approaches the second temperature, the control unit 1C notifies the alarm while changing the notification format of the alarm so that the user can easily recognize that the internal tire temperature is approaching the second temperature.

[0045] The information processing device 1 shown in Fig. 2 is configured using a computer 10, for example, as shown in Fig. 4. The computer 10 includes a CPU (Central Processing Unit) 10A, which is an example of a processor, a RAM (Random Access Memory) 10B used as a temporary work area for the CPU 10A, a non-volatile memory 10C, and an input / output interface (I / O) 10D. The CPU 10A, RAM 10B, non-volatile memory 10C, and I / O 10D are connected to each other via a bus 10E.

[0046] The CPU 10A is responsible for the processing of each functional unit shown in FIG.

[0047] The nonvolatile memory 10C is an example of a storage device that maintains stored information even when power supplied to the nonvolatile memory 10C is cut off, and may be, for example, a semiconductor memory or a hard disk. Information that needs to be retained even when power to the information processing device 1 is cut off, such as the first temperature and the second temperature, is stored in the nonvolatile memory 10C. The nonvolatile memory 10C also functions as the data storage unit 1M in FIG. 2 and stores various types of information.

[0048] The nonvolatile memory 10C does not necessarily have to be built into the computer 10, but may be, for example, a portable storage device that can be attached to and detached from the computer 10.

[0049] To the I / O 10D, for example, a communication unit 11, an input unit 12, a display unit 13, and a temperature sensor 14 are connected.

[0050] The communication unit 11 is connected to a communication line and has a communication protocol for transmitting and receiving data to and from external devices connected to the communication line. For example, if the information processing device 1 is installed in a fleet control room, the information processing device 1 communicates data with each vehicle via a wireless line, which is an example of a communication line connected to the communication unit 11. Furthermore, if the information processing device 1 is installed in a vehicle, the information processing device 1 may communicate data with a server (not shown) installed in the fleet control room via the wireless line connected to the communication unit 11, and display the internal tire temperature of each tire 2 on a monitor installed in the fleet control room.

[0051] The input unit 12 is a device that receives user instructions and notifies the CPU 10A of the instructions, and includes, for example, a button, a touch panel, a mouse, a keyboard, and a pointing device.

[0052] The display unit 13 is an example of a display device that displays information processed by the CPU 10A as an image, and includes, for example, a liquid crystal display or an organic EL (Electro Luminescence) display. For example, if the information processing device 1 is installed in a vehicle, the display unit 13 is used as a monitor inside the vehicle. Also, if the information processing device 1 is installed in a traffic control room, the display unit 13 is used as a monitor inside the traffic control room.

[0053] A plurality of temperature sensors 14 are connected to the I / O 10D. For example, the first temperature sensor 14 is a TPMS that is attached to the rim of each tire 2 and measures the temperature inside the tire. The second temperature sensor 14 is a thermometer that measures the outside air temperature around the vehicle. Note that if the information processing device 1 is installed in an operation control room, there is no need to connect the temperature sensor 14 to the I / O 10D, and the measurement values ​​of the temperature sensors 14 attached to each vehicle are transmitted to the information processing device 1 via the communication unit 11.

[0054] <Warning Processing> Next, the operation of the information processing device 1 according to the first embodiment will be described. Fig. 5 is a flowchart showing an example of the flow of the warning processing according to the first embodiment. The CPU 10A of the information processing device 1 reads an information processing program stored in the non-volatile memory 10C, expands it in the RAM 10B, and executes the warning processing.

[0055] As an example, we will explain the flow of alarm processing when an information processing device 1 is installed in each vehicle, but the information processing device 1 may also be installed in an operations control room, and the information processing device 1 may perform alarm processing for multiple vehicles collectively.

[0056] It is assumed that tire information, temperature forecast information, and heat generation history acquired before the reference time point are stored in advance in the nonvolatile memory 10C functioning as the data storage unit 1M.

[0057] First, in step S100, the CPU 10A acquires the tire internal temperature through the temperature sensor 14. That is, the tire internal temperature acquired in step S100 becomes the tire internal temperature at the reference time point.

[0058] In step S110, CPU 10A determines whether the tire internal temperature acquired in step S100 is equal to or higher than a first temperature. If the tire internal temperature is lower than the first temperature, the process proceeds to step S190, which will be described later. On the other hand, if the tire internal temperature is equal to or higher than the first temperature, the process proceeds to step S120.

[0059] In step S120, CPU 10A further determines whether the internal tire temperature acquired in step S100 is equal to or higher than a second temperature. If the internal tire temperature is equal to or higher than the second temperature, this means that the risk of tire 2 failure exceeds a specific level. Therefore, it is preferable to immediately stop the vehicle and reduce the internal tire temperature. Therefore, the process proceeds to step S170, where CPU 10A outputs a level 3 warning. The level 3 warning is displayed on display unit 13 by CPU 10A controlling the display unit 13. If the vehicle is an autonomous vehicle, CPU 10A outputs the level 3 warning to an automatic control device attached to the autonomous vehicle, for example, via communication unit 11. Upon receiving the level 3 warning, the automatic control device immediately stops the vehicle and reduces the internal tire temperature. In other words, the automatic control device controls the vehicle to travel autonomously depending on the level of the warning. Note that if the vehicle is an autonomous vehicle, CPU 10A may or may not output various warnings to the display unit 13.

[0060] The Level 3 alarm is an alarm for informing the vehicle's controller that the tire temperature has reached a second temperature or higher, and is the alarm that most strongly urges the vehicle's controller to take control to lower the tire temperature among the Level 1 and Level 2 alarms described below. Therefore, if the vehicle's controller is the user, the Level 3 alarm is displayed in a format that is easier for the user to recognize than the Level 1 and Level 2 alarms.

[0061] 6 is a diagram showing an example of a level 3 alarm. For example, a level 3 alarm is displayed with a red background color for the alarm icon 3 that notifies the user of the internal tire temperature. The reason for displaying the level 3 alarm icon 3 in red is that, among various colors, red is generally considered to be the color that most easily attracts the user's attention. Therefore, if a color other than red is considered to be more likely to attract the user's attention, the level 3 alarm icon 3 may be displayed in a different color (e.g., purple).

[0062] Furthermore, to make it easier for the user to recognize the alarm icon 3, the CPU 10A may perform control to cause the alarm icon 3 to flash. Flashing the alarm icon 3 means, for example, alternately displaying the alarm icon 3 in different display forms, such as different colors. As shown in FIG. 6 , the three straight lines on each side of the alarm icon 3 indicate that the alarm icon 3 is flashing. Such an alarm icon 3 is an example of a display area that displays the in-tire temperature, and the background color of the alarm icon 3 and the color of the line representing the alarm icon 3 are each an example of a display color of the display area that displays the in-tire temperature. Hereinafter, the color of the shapes and characters that make up the alarm icon 3 may be referred to as the "display color of the alarm icon 3."

[0063] 6, the warning icon 3 may also display the tire internal temperature acquired in step S100 (displayed as "Tp2°C" in the example of FIG. 6) and the time required to reach the second temperature (displayed as "0" in the example of FIG. 6). As shown in FIG. 6, if the tire internal temperature acquired in step S100 has already reached the second temperature, the CPU 10A displays the time as "0".

[0064] 5, after outputting a level 3 warning, the process proceeds to step S190, which will be described later. On the other hand, if it is determined in the determination process of step S120 that the tire internal temperature acquired in step S100 is lower than the second temperature, the process proceeds to step S130.

[0065] In this case, the tire internal temperature at the reference time point is equal to or higher than the first temperature and lower than the second temperature. In this way, when the tire internal temperature at the reference time point is equal to or higher than the first temperature and lower than the second temperature, in step S130, CPU 10A executes a prediction process to predict the time it takes for the tire internal temperature to reach the second temperature. The prediction process in step S130 will be described in detail later.

[0066] In step S140, CPU 10A determines whether the arrival time predicted in the prediction process of step S130 is equal to or shorter than time T2. Time T2 is a time set as a starting point at which the vehicle's controller should begin to be aware that a situation may occur in which the tire internal temperature reaches the second temperature if the vehicle continues to travel as is. Time T2 is stored in advance in, for example, non-volatile memory 10C. Time T2 is a time set in advance by the vehicle's controller, and the set time T2 is modifiable.

[0067] If the predicted arrival time exceeds time T2, there is still enough time for the internal tire temperature to reach the second temperature, so the vehicle control entity can continue driving without paying attention to the internal tire temperature. Therefore, CPU 10A does not output an alarm and proceeds to step S190 (described later). On the other hand, if the predicted arrival time is equal to or less than time T2, proceeds to step S150.

[0068] In step S150, CPU 10A further determines whether the arrival time predicted in the prediction process of step S130 is equal to or shorter than time T1. Time T1 is a time set as a time when the vehicle's control entity considers it advisable to start consciously driving the vehicle so that the tire internal temperature does not reach the second temperature, and is a time stored in advance in non-volatile memory 10C, for example. There is a magnitude relationship between time T1 and time T2, i.e., time T1<time T2. Time T1 is a time set in advance by the vehicle's control entity, and the set time T1 is modifiable.

[0069] If the time T1 is set to a value close to the time T2, the interval from when the arrival time becomes equal to or shorter than the time T2 until when the arrival time becomes equal to or shorter than the time T1 will become shorter. Therefore, it is preferable to set the time T1 to, for example, half the value of the time T2.

[0070] If the arrival time predicted in the prediction process of step S130 is equal to or shorter than time T1, the process proceeds to step S180. In this case, there is no urgency requiring the vehicle to be immediately stopped to lower the internal tire temperature, but it is preferable for the vehicle's control entity to consciously drive the vehicle in a manner that prevents the internal tire temperature from reaching the second temperature. Therefore, in step S180, CPU 10A outputs a level 2 warning. As an example, CPU 10A controls display unit 13 to display the level 2 warning. If the vehicle is an autonomous vehicle, CPU 10A outputs the arrival time for the internal tire temperature to reach the second temperature and the level 2 warning to an automatic control device attached to the autonomous vehicle, for example, via communication unit 11. The automatic control device that receives the level 2 warning autonomously controls the vehicle's driving so that the internal tire temperature does not reach the second temperature based on the arrival time for the internal tire temperature to reach the second temperature. Note that transmitting a level 3 warning to the automatic control device by the process of step S170 is equivalent to transmitting to the automatic control device that the arrival time for the internal tire temperature to reach the second temperature is "0."

[0071] As can be seen from the above-described objectives, a level 2 alarm is one level lower than a level 3 alarm for the vehicle control body, and does not have the same urgency as a level 3 alarm.

[0072] 7 is a diagram showing an example of a level 2 alarm displayed on the display unit 13. Unlike the level 3 alarm shown in FIG. 6, the background color of the alarm icon 3 for a level 2 alarm is not red, and only the color of the line representing the alarm icon 3 is displayed in red. In FIG. 7, "α ２ ° C." represents the tire internal temperature acquired in step S100. The subscript n (n is an integer of 1 or more) following α represents the chronological order in which the tire internal temperatures were acquired. Specifically, α ｎThe larger the value of n in the above equation, the later the tire internal temperature is acquired.

[0073] The CPU 10A may display the alarm icon 3 for a level 2 alarm in a color different from the color of the alarm icon 3 for a level 3 alarm. For example, the alarm icon 3 for a level 2 alarm may be displayed in orange, which is considered to be the color most likely to attract the user's attention after red.

[0074] 5, after outputting a level 2 warning, the process proceeds to step S190, which will be described later. On the other hand, if it is determined in the determination process of step S150 that the arrival time predicted in the prediction process of step S130 will exceed time T1, the process proceeds to step S160.

[0075] In this case, the predicted arrival time exceeds time T1 and is within a range equal to or shorter than time T2. In other words, there is no urgency that requires the vehicle's control entity to consciously drive the vehicle in a way that prevents the internal tire temperature from reaching the second temperature, but it is still a situation in which attention should be paid to the internal tire temperature. Therefore, in step S160, CPU 10A outputs a Level 1 warning. As an example, CPU 10A controls display unit 13 to display the Level 1 warning. If the vehicle is an autonomous vehicle, CPU 10A outputs the arrival time for the internal tire temperature to reach the second temperature and the Level 1 warning to an automatic control device attached to the autonomous vehicle, for example, via communication unit 11. The automatic control device that receives the Level 1 warning autonomously controls the vehicle's driving so that the internal tire temperature does not reach the second temperature, based on the arrival time for the internal tire temperature to reach the second temperature.

[0076] 8 is a diagram showing an example of a level 1 alarm displayed on the display unit 13. As can be seen from the above-described purpose, a level 1 alarm is one level lower than a level 2 alarm for the vehicle's control entity, and does not have the same level of urgency as a level 2 alarm. Therefore, the CPU 10A may display the alarm icon 3 for a level 1 alarm in a color different from the alarm icons 3 for level 2 and level 3 alarms, and in a color that is more likely to attract the user's attention (e.g., yellow). After outputting the level 1 alarm, the process proceeds to step S190 in FIG. 5, which will be described later.

[0077] In step S190, CPU 10A determines whether or not an instruction to end the warning process has been received from the vehicle control entity. If an instruction to end the warning process has not been received, the process proceeds to step S200.

[0078] In step S200, CPU 10A waits until a predetermined time has elapsed, and adjusts the interval for acquiring the tire internal temperature in step S100. Specifically, CPU 10A controls the interval for acquiring the tire internal temperature in step S100 so that the longer the time it takes to reach the second temperature, the longer the interval for acquiring a new tire internal temperature in step S100, and then proceeds to step S100.

[0079] The longer the arrival time, the more time there is before the internal tire temperature reaches the second temperature. On the other hand, the shorter the arrival time, the higher the probability that the internal tire temperature will reach the second temperature. Therefore, to prevent the internal tire temperature from reaching the second temperature or higher as much as possible, the internal tire temperature acquisition interval may be set according to the situation when the internal tire temperature approaches the second temperature, and the arrival time may be repeatedly predicted at that acquisition interval. However, if the internal tire temperature acquisition interval is set according to the situation when the internal tire temperature approaches the second temperature, in a situation where the internal tire temperature is closer to the first temperature than the second temperature, the internal tire temperature will be acquired and the arrival time will be predicted at intervals longer than necessary. This places a burden on the CPU 10A. Therefore, the CPU 10A controls the internal tire temperature acquisition interval so that the longer the arrival time, the longer the interval until a new internal tire temperature is acquired. This reduces the load on the CPU 10A compared to when the internal tire temperature acquisition interval is set to a fixed value regardless of the value of the arrival time.

[0080] CPU 10A repeatedly executes the processes of steps S100 to S200 until it determines in step S190 that an instruction to end the warning process has been received from the vehicle's control entity. When CPU 10A determines in step S190 that an instruction to end the warning process has been received from the vehicle's control entity, it ends the warning process shown in FIG.

[0081] As described above, control is performed to change the notification format of the alarm that notifies the vehicle control entity of the rise in tire internal temperature, depending on the time it takes for the tire internal temperature to reach the second temperature.

[0082] The CPU 10A may perform control to change at least one of whether or not to blink the alarm icon 3 displayed on the display unit 13 and the blinking interval, depending on the predicted arrival time. For example, the CPU 10A may not blink the alarm icon 3 for a level 1 alarm, but may blink the alarm icon 3 for a level 2 alarm. When blinking the alarm icon 3 for a level 2 alarm, the CPU 10A may perform control to shorten the blinking interval of the alarm icon 3 as the predicted arrival time becomes shorter than the first time.

[0083] 9, the CPU 10A may cause the alarm icon 3 to blink by alternately displaying and erasing the frame of the alarm icon 3. Naturally, the alarm icon 3 may also be caused to blink by alternately displaying and erasing not only the frame of the alarm icon 3 but also the entire alarm icon 3.

[0084] Furthermore, when displaying an alarm icon 3 for a level 2 alarm, for example, the CPU 10A may control the display of the alarm icon 3 so that the shorter the predicted arrival time, the larger the area filled with the background color of the alarm icon 3. Increasing the area filled with the background color of the alarm icon 3 means increasing the area filled with the alarm icon 3.

[0085] FIG. 10 is a diagram showing an example of the change in the fill area of ​​the warning icon 3 according to the arrival time. In FIG. 10, k represents a predetermined unit time shorter than the time T1, and mk (m is an integer equal to or greater than 1) represents a multiple of the unit time k. That is, FIG. 10 shows display examples of warning icons 3 when the predicted arrival times are T1, T1-k, T1-2k, 0, and -k. The arrival time "-k" indicates the point in time after the unit time k has elapsed since the tire internal temperature reached the second temperature. That is, in FIG. 10, the warning icons 3 with predicted arrival times T1, T1-k, and T1-2k represent warning icons 3 for a level 2 warning, and the warning icons 3 with predicted arrival times of 0 and -k represent warning icons 3 for a level 3 warning. Note that in FIG. 10, the temperature α of the warning icon 3 when the arrival time is 0 is ５ °C is Tp2°C.

[0086] 10, the alarm icon 3 is not filled in when the arrival time is T1, and the filled area of ​​the alarm icon 3 increases as the arrival time approaches 0, until the entire alarm icon 3 is filled in when the arrival time reaches 0. The alarm icon 3 may be filled in using a gradation in which the background color changes gradually in the filling direction.

[0087] In the example shown in Figure 10, the alarm icon 3 is filled from bottom to top, but there are no restrictions on the direction in which the alarm icon 3 is filled, and it may be filled, for example, from left to right, or from diagonally upper left to diagonally lower right.

[0088] Furthermore, the CPU 10A may perform control to change the size of the warning icon 3 according to the arrival time. Specifically, the CPU 10A may display the warning icon 3 larger as the predicted arrival time becomes shorter. The larger the warning icon 3 is displayed, the easier it is for the driver, vehicle operation manager, etc. to recognize the warning.

[0089] As shown in Figure 10, if the current time has already passed the predicted arrival time, i.e., if the arrival time is -k, the CPU 10A may display the background color of the alarm icon 3 in a color different from the background color of the alarm icon 3 when the arrival time is 0.

[0090] Furthermore, in addition to changing the fill area of ​​the alarm icon 3 according to the reaching time, the CPU 10A may also control whether or not to blink the alarm icon 3. In the example shown in Fig. 10 , the CPU 10A does not blink the alarm icon 3 for a level 2 alarm, but blinks the alarm icon 3 for a level 3 alarm. When blinking the alarm icon 3 for a level 3 alarm, the CPU 10A may perform control to shorten the blinking interval of the alarm icon 3 as the duration during which the internal tire temperature remains at or above the second temperature after reaching the second temperature becomes longer.

[0091] Furthermore, the CPU 10A may control the output of an alarm sound from a speaker (not shown) at a volume corresponding to the alarm level, along with the display of the alarm icon 3 on the display unit 13. For example, the CPU 10A may output an alarm sound from the speaker that gradually increases in volume as the alarm level progresses from level 1 alarm to level 2 alarm and level 3 alarm. Also, for example, the CPU 10A may not output an alarm sound for level 1 alarm and level 2 alarm, but may output an alarm sound for level 3 alarm.

[0092] 5 , the CPU 10A determines whether the tire temperature acquired in step S100 is equal to or higher than the second temperature. However, the CPU 10A may instead determine whether the tire temperature is equal to or higher than a temperature set by offsetting the second temperature by a predetermined temperature (hereinafter referred to as the “margin temperature”). In the prediction process of step S130, when predicting the tire temperature at a future time from the acquired tire temperature, the predicted tire temperature includes a prediction error. However, correcting the second temperature in advance by a temperature corresponding to the prediction error and predicting the arrival time using the corrected second temperature can more accurately predict the arrival time to the second temperature than predicting the arrival time using the uncorrected second temperature. Therefore, in step S120, the CPU 10A preferably compares the corrected second temperature, which is obtained by offsetting the second temperature by a margin temperature corresponding to the prediction error in the prediction process, with the acquired tire temperature.

[0093] The margin temperature is calculated from the distribution of the difference between the acquired internal tire temperature and the predicted internal tire temperature, which is a predicted value of the internal tire temperature at the time the acquired internal tire temperature was acquired. For example, if the distribution of the difference between the acquired internal tire temperature and the predicted internal tire temperature, which is a value predicted in advance for the acquired internal tire temperature, indicates that the predicted value of the internal tire temperature in the prediction process tends to deviate by about ±δ°C from the actual internal tire temperature, δ can be set as the margin temperature.

[0094] When the second temperature is corrected using the margin temperature, the prediction process in step S130 predicts the time it takes for the acquired tire internal temperature to reach the corrected second temperature.

[0095] By correcting the second temperature using the margin temperature, the number of cases in which the tire internal temperature is predicted to be below the second temperature when it is actually equal to or higher than the second temperature is reduced compared to when the second temperature is not corrected.

[0096] <Prediction Processing> Next, a description will be given of the prediction processing in step S130 of the warning processing shown in Fig. 5. Fig. 11 is a flowchart showing an example of the flow of the prediction processing in step S130 of the warning processing shown in Fig. 5.

[0097] First, in step S10, the CPU 10A acquires tire information and outside air temperature data for a period going back a predetermined time from the time point when the tire internal temperature was acquired in step S100 of FIG. 5, that is, the reference time point.

[0098] In step S12, CPU 10A acquires future temperature prediction information and heat generation history during driving.

[0099] In step S14, CPU 10A predicts the time it will take for the tire internal temperature to reach the second temperature from the reference time point based on the tire information, the air temperature prediction information, and the heat generation history. This ends the prediction process shown in FIG.

[0100] In this way, according to the information processing device 1 according to the first embodiment, when the temperature inside a tire mounted on a vehicle is equal to or higher than the first temperature, the notification format of the alarm notifying the rise in the temperature inside the tire is changed depending on the predicted time until the temperature inside the tire reaches the second temperature. In this way, the information processing device 1 according to the first embodiment prompts the vehicle control entity to pay attention.

[0101] <Modification of information processing device 1> Next, a description will be given of a modification of the information processing device 1 shown in the first embodiment. An example of the functional configuration of the information processing device 1 according to the modification is the same as that shown in Fig. 2, and is realized using a computer 10 having the configuration shown in Fig. 4.

[0102] The acquisition unit 1A according to the modification acquires tire information and outside air temperature data for use in the prediction at the required timing and for a predetermined period of time. As in the first embodiment, the acquisition unit 1A also acquires tire internal temperatures during the most recent driving, future air temperature forecast information, and heat generation history during driving.

[0103] The prediction unit 1B according to the modified example predicts the temperature to be reached after a predetermined time has elapsed based on tire information, air temperature prediction information, and heat generation history. This makes it possible to obtain the trend of the predicted temperature after a predetermined time has elapsed in the future. The prediction method may be the same as that of the first embodiment. Furthermore, the prediction unit 1B according to the modified example may update the prediction of the tire temperature in real time. Furthermore, the prediction unit 1B according to the modified example may predict multiple tire temperature values ​​using the above data covering multiple different retroactive periods.

[0104] Furthermore, the prediction unit 1B according to the modified example may set any period and interval, and may further extract any period from a period going back a predetermined time to predict the transition of the predicted temperature. For example, if it is desired to check the possibility of a failure as accurately as possible, it is possible to take measures such as extracting only the interval from past data in which the prediction result is most severe and making a prediction.

[0105] Furthermore, the prediction unit 1B according to the modified example may predict the tire internal temperature with a statistical deviation range such as 1σ to −1σ, where “σ” is the standard deviation of the predicted value.

[0106] 12 is a diagram showing an example of a prediction of the tire internal temperature after a predetermined time has elapsed in the future, taking into account the prediction range. In FIG. 12, the solid line "d1" indicates the history of the measured tire internal temperature, and the dashed line "d2" indicates a temperature prediction line for the tire internal temperature over time. In this case, the temperature prediction line d2 for the tire internal temperature may fluctuate within a prediction range with 1σ as the upper limit and −1σ as the lower limit.

[0107] Next, the operation of the information processing device 1 according to the modified example will be described. Fig. 13 is a flowchart showing a modified example of the prediction process in step S130 of the warning process shown in Fig. 5 .

[0108] First, in step S20, the CPU 10A acquires tire information, outside air temperature data, future air temperature prediction information, and heat generation history during driving to be used for prediction.

[0109] In step S22, the CPU 10A acquires the tire internal temperature.

[0110] In step S24, the CPU 10A predicts the tire internal temperature to be reached after a predetermined time has elapsed from the reference time point based on the tire internal temperature, tire information, outside air temperature data, air temperature prediction information, and heat generation history. The time at which the predicted temperature reaches the second temperature is time T2.

[0111] In this way, according to the prediction process of the modified example, the time at which the tire internal temperature will reach the second temperature is predicted by predicting the temperature after a predetermined time has elapsed from the reference point in time.

[0112] In the embodiment described above, when the vehicle is an autonomous vehicle, an example is shown in which the information processing device 1 transmits the alarm level and the time required for the internal tire temperature to reach the second temperature to an automatic control device attached to the vehicle. The automatic control device, which receives the alarm level and the time required, controls the vehicle to autonomously drive so that the internal tire temperature is below the second temperature according to the received alarm level and time required. However, the information processing device 1 may also function as the automatic control device.

[0113] In this case, the control unit 1C shown in Fig. 2 functions as an automatic control device. The control unit 1C autonomously controls the running of the vehicle so that the tire temperature is lower than the second temperature, for example, in accordance with at least one of the time required for the tire temperature to reach the second temperature and the level of the warning. The processing of the control unit 1C is executed by the CPU 10A.

[0114] For example, when a Level 3 warning is output, the CPU 10A immediately stops the vehicle and autonomously reduces the internal tire temperature to below the second temperature. Furthermore, when a Level 2 warning or a Level 1 warning is output, the CPU 10A autonomously controls the running of the vehicle based on the time it takes for the internal tire temperature to reach the second temperature so that the internal tire temperature does not reach the second temperature.

[0115] While one form of the information processing device 1 has been described above using the embodiment, the disclosed form is merely an example, and the form of the information processing device 1 is not limited to the scope described in the embodiment. Various changes or improvements can be made to the embodiment without departing from the gist of the present disclosure, and forms of the information processing device 1 with such changes or improvements are also included in the technical scope of the disclosure.

[0116] In the above embodiment, the alarm processing shown in FIG. 5 is implemented by software as an example. However, the same processing as the flowchart of the alarm processing may be executed by hardware. In this case, the processing speed can be increased compared to when the alarm processing is implemented by software. Furthermore, the processing flow in the alarm processing is an example, and unnecessary processing may be deleted, new processing may be added, or the processing order may be changed within the scope of the present invention.

[0117] In the above embodiment, an example has been described in which the information processing program is stored in the nonvolatile memory 10C. However, the storage destination of the information processing program is not limited to the nonvolatile memory 10C. The information processing program may also be provided in a form recorded on a computer-readable storage medium.

[0118] For example, the information processing program may be provided in a form recorded on an optical disk such as a CD-ROM (Compact Disk Read Only Memory), a DVD-ROM (Digital Versatile Disk Read Only Memory), or a Blu-ray disc. The information processing program may also be provided in a form recorded on a portable semiconductor memory such as a USB (Universal Serial Bus) memory or a memory card. The non-volatile memory 10C, a CD-ROM, a DVD-ROM, a Blu-ray disc, a USB, and a memory card are examples of non-transitory storage media.

[0119] Furthermore, the CPU 10A may download an information processing program from an external device via the communication unit 11 and store the downloaded information processing program in the nonvolatile memory 10C.

[0120] In the embodiment, the CPU 10A has been used as an example of a general-purpose processor. However, in the embodiment, the term "processor" refers to a processor in a broad sense, and includes not only a general-purpose processor such as the CPU 10A, but also a dedicated processor (for example, a GPU: Graphics Processing Unit, an ASIC: Application Specific Integrated Circuit, an FPGA: Field Programmable Gate Array, a programmable logic device, etc.).

[0121] Furthermore, the operation of the processor in each of the above-mentioned embodiments may not only be performed by a single processor, but may also be performed by multiple processors working together, or may be performed by multiple processors located in physically separate locations working together.

[0122] The disclosures of Japanese Patent Application No. 2024-007030, filed on January 19, 2024, and Japanese Patent Application No. 2024-036323, filed on March 8, 2024, are incorporated herein by reference in their entirety. All documents, patent applications, and technical standards mentioned herein are incorporated herein by reference to the same extent as if each individual document, patent application, and technical standard was specifically and individually indicated to be incorporated by reference.

Claims

1. An information processing apparatus comprising: an acquisition unit that acquires the temperature inside a tire; and a control unit that performs control to change a notification form of an alarm for notifying a user of an increase in the temperature inside the tire according to a predicted time until the temperature inside the tire reaches a second temperature set to a temperature higher than the first temperature when the temperature inside the tire acquired by the acquisition unit is equal to or higher than a predetermined first temperature.

2. The information processing apparatus according to claim 1, wherein the control unit performs control to change the notification form of the alarm so that the user can easily recognize the alarm as the predicted time becomes shorter.

3. The information processing apparatus according to claim 2, wherein the control unit performs control to change a display color of a display area that displays the temperature inside the tire according to the predicted time.

4. The information processing apparatus according to claim 2, wherein the control unit performs control to change at least one of presence or absence of blinking and a blinking interval of a display area that displays the temperature inside the tire according to the predicted time.

5. The information processing apparatus according to claim 4, wherein the control unit starts blinking of the display area when the predicted time is within a predetermined first time, and performs control to shorten the blinking interval of the display area as the predicted time becomes shorter than the first time.

6. The information processing apparatus according to claim 2, wherein the control unit controls the display of the display area so that a filled area of the display area that displays the temperature inside the tire with a predetermined display color increases as the predicted time becomes shorter.

7. The information processing apparatus according to claim 1, wherein the control unit controls the acquisition unit so that an interval until the temperature inside the tire is newly acquired becomes longer as the predicted time becomes longer.

8. The information processing apparatus according to any one of claims 1 to 7, wherein the control unit performs control to display the predicted time together with the alarm.

9. The second temperature is a temperature set by shifting a predetermined temperature from a dangerous temperature at which a risk of tire failure exceeds a specific level when the tire in which the temperature inside the tire is acquired continues to run. The information processing apparatus according to any one of claims 1 to 7.

10. The predetermined temperature is a temperature calculated from a distribution of a difference between the temperature inside the tire and a predicted temperature inside the tire which is a predicted value of the temperature inside the tire at the time when the temperature inside the tire is acquired. The information processing apparatus according to claim 9.

11. An information processing method in which a computer executes a process of obtaining a tire internal temperature and, when the obtained tire internal temperature is equal to or higher than a predetermined first temperature, changing a notification form of an alarm for notifying a user of an increase in the tire internal temperature according to a predicted time until the tire internal temperature reaches a second temperature set to a temperature higher than the first temperature.

12. An information processing program for causing a computer to execute a process of obtaining a tire internal temperature and, when the obtained tire internal temperature is equal to or higher than a predetermined first temperature, changing a notification form of an alarm for notifying a user of an increase in the tire internal temperature according to a predicted time until the tire internal temperature reaches a second temperature set to a temperature higher than the first temperature.

13. An information processing apparatus including: an acquisition unit that acquires a tire internal temperature of a vehicle; and a control unit that, when the tire internal temperature acquired by the acquisition unit is equal to or higher than a predetermined first temperature, transmits a predicted time until the tire internal temperature reaches a second temperature set to a temperature higher than the first temperature to an automatic control device that autonomously controls the running of the vehicle so that the tire internal temperature is lower than the second temperature.

14. An information processing method in which a computer executes a process of obtaining a tire internal temperature of a vehicle and, when the obtained tire internal temperature is equal to or higher than a predetermined first temperature, transmitting a predicted time until the tire internal temperature reaches a second temperature set to a temperature higher than the first temperature to an automatic control device that autonomously controls the running of the vehicle so that the tire internal temperature is lower than the second temperature.

15. An information processing program for causing a computer to acquire a tire internal temperature of a vehicle and, when the obtained tire internal temperature is equal to or higher than a predetermined first temperature, transmit a predicted time until the tire internal temperature reaches a second temperature set to a temperature higher than the first temperature to an automatic control device that autonomously controls the running of the vehicle so that the tire internal temperature is lower than the second temperature.

16. An information processing device comprising: an acquisition unit that acquires the in-tire temperature of a vehicle; and a control unit that autonomously controls the running of the vehicle so that the in-tire temperature is less than a second temperature, which is set to a temperature higher than a first temperature, according to a predicted time until the in-tire temperature, which is acquired by the acquisition unit and is equal to or higher than the predetermined first temperature, reaches the second temperature.

17. An information processing method in which a computer executes a process of acquiring the in-tire temperature of a vehicle and, when the acquired in-tire temperature is equal to or higher than a predetermined first temperature, autonomously controlling the running of the vehicle so that the in-tire temperature is less than a second temperature, which is set to a temperature higher than the first temperature, according to a predicted time until the in-tire temperature reaches the second temperature.

18. An information processing program for autonomously controlling the running of a vehicle so that the in-tire temperature is less than a second temperature, which is set to a temperature higher than a first temperature, according to a predicted time until the in-tire temperature, which is acquired, reaches the second temperature, when the acquired in-tire temperature is equal to or higher than the predetermined first temperature.

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