Tire maintenance support method

Abstract

To provide a tire maintenance support method that easily obtains information related to tire maintenance and improves work efficiency in formulating a maintenance plan.SOLUTION: A tire maintenance support method causes a display unit 14 to display axle arrangement information corresponding to one vehicle selected from a plurality of vehicles whose operation is being managed, and maintenance information for a tire mounted on the vehicle. The maintenance information includes one of the following: predicted data on an amount of remaining tread in a tire, a temporal change in tire air pressure data, and history of tire load data based on at least one of tire air pressure and temperature.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a tire maintenance support method for supporting the maintenance of tires mounted on a vehicle. [Background technology]

[0002] Generally, tires wear depending on driving conditions and distance traveled, and the amount of wear also varies depending on the axle position on which the tire is mounted. When the remaining tread depth, which is the depth of the grooves in the tire, falls below a specified level, maintenance such as tire replacement is required.

[0003] Patent Document 1 describes a conventional tire management method. A tire management server used in this tire management method is connected to a vehicle terminal, a vehicle management terminal, and a dealer terminal via a communication network. The tire management server receives data indicating the tire condition from the vehicle terminal or the dealer terminal, judges the tire condition based on this data, and if it is determined that urgent attention is required for the tire, it notifies the vehicle terminal and the dealer terminal of the dealer that can handle the condition of the tire. If it is determined that some kind of attention is required for the tire but not urgent, it performs a scheduling process for the vehicle management terminal of the vehicle and the dealer terminal of the specified dealer. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-132994 A Summary of the Invention [Problem to be solved by the invention]

[0005] The tire management method described in Patent Document 1 displays the tire conditions on a vehicle terminal mounted on each vehicle. However, for transportation companies and the like that own and manage a number of transport vehicles such as trucks, planning maintenance such as tire replacement for the multiple vehicles under management can be complicated, and there have been cases where the timing of maintenance is off. The present inventors thought that, when planning tire maintenance for multiple vehicles under management, it would be possible to improve the work of planning maintenance plans by making it easier to obtain maintenance information for the tires mounted on each vehicle.

[0006] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a tire maintenance support method that makes it easy to obtain information related to tire maintenance and can improve the work efficiency of formulating a maintenance plan. [Means for solving the problem]

[0007] A tire maintenance support method according to one embodiment of the present invention displays on a display unit axle arrangement information corresponding to one vehicle selected from a plurality of vehicles under operational management, and maintenance information for tires fitted to the vehicle, wherein the maintenance information includes one of predicted data on remaining tread depth of tires, time-dependent changes in tire air pressure data, and history of tire load data based on at least one of tire air pressure and temperature. Effect of the Invention

[0008] According to the present invention, information relating to tire maintenance can be easily obtained, and the work efficiency of formulating a maintenance plan can be improved. [Brief description of the drawings]

[0009] [Figure 1] 1 is a block diagram showing a configuration of a maintenance support system including a tire maintenance support device according to an embodiment. [Diagram 2]2 is a block diagram showing a functional configuration of the tire management server device. FIG. [Diagram 3] 10 is a schematic diagram for explaining wear amount estimation and learning of a computation model. FIG. [Figure 4] 2 is a block diagram showing a functional configuration of the tire maintenance assistance device. FIG. [Diagram 5] 5 is a flowchart showing a procedure for displaying maintenance information by the tire maintenance assistance device. [Figure 6] 5 is a schematic diagram showing an example of displaying tire remaining groove depth data on a display unit. FIG. [Figure 7] 4 is a schematic diagram showing an example of displaying tire pressure data on a display unit. FIG. [Figure 8] FIG. 4 is a schematic diagram showing an example of displaying tire load data on a display unit. [Figure 9] FIG. 13 is a schematic diagram showing an example of displaying axle arrangement information with an alert display added thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will be described below based on preferred embodiments with reference to Figures 1 to 9. The same or equivalent components and members shown in each drawing are given the same reference numerals, and duplicated descriptions are omitted as appropriate. The dimensions of the members in each drawing are enlarged or reduced as appropriate for ease of understanding. Some of the members that are not important for explaining the embodiments are omitted in each drawing.

[0011] 1 is a block diagram showing the configuration of a maintenance support system 110 including a tire maintenance support device 100 according to an embodiment. The maintenance support system 110 includes a tire wear amount measuring device 60, an on-vehicle measuring device 70, a tire management server device 80, and a tire maintenance support device 100. The tire maintenance support device 100 provides axle arrangement information of a vehicle selected from a plurality of vehicles under operational management, and information related to the maintenance of tires 7 (hereinafter referred to as maintenance information).

[0012] The tires 7 are mounted on a plurality of vehicles, such as trucks for transport, whose operation is managed by a transport company or the like. The transport company can obtain maintenance information for the tires 7 provided by the tire maintenance support device 100 for the plurality of tires 7 mounted on each vehicle. The maintenance information for the tires 7 is, for example, predicted data on the remaining tread depth of the tires 7, time-varying air pressure data of the tires 7, and tire load data based on at least one of the air pressure and temperature of the tires 7.

[0013] The tire wear measuring device 60 directly measures the depth of the grooves provided in the tread of the tire 7 multiple times over a predetermined period (several months to several years) to obtain the wear of the tire 7. The tire wear measuring device 60 transmits data on the measured wear of the tire 7 to the tire management server device 80 via the communication network 9. A tire worker may measure the depth of each groove using a measuring tool, a camera, visual inspection, or the like, and the tire wear measuring device 60 may store the measurement data input by the worker. Alternatively, the tire wear measuring device 60 may be a dedicated device that measures the groove depth by a mechanical or optical method and stores the wear.

[0014] Specifically, for example, if a tire has four grooves, the tire wear measuring device 60 measures at four locations in the width direction, and further measures at three locations in the circumferential direction of the same groove, for example, at 120° intervals. As a result, uneven wear data in the width direction or circumferential direction of the tire is also stored in the tire wear measuring device 60. Note that the tire wear measuring device 60 may indirectly measure the groove depth by calculation from the travel distance and the tire rotation speed / speed information, since the diameter of the tire changes due to wear. In addition, a device that directly measures the groove depth may be used in combination with a device that predicts the depth by calculation from the travel distance and the tire rotation speed / speed.

[0015] The on-vehicle measuring device 70 is mounted on a vehicle, has a pressure sensor and a temperature sensor provided on the tire 7, and measures the air pressure, temperature, etc. of the tire 7. The temperature sensor and pressure sensor are disposed on the air valve, etc. of the tire 7 mounted on the vehicle, or are firmly wrapped around and fixed to the wheel with a belt, etc. The temperature sensor may be disposed on the inner liner, etc. of the tire 7. The on-vehicle measuring device 70 transmits data such as the air pressure and temperature of the tire 7 to the tire management server device 80 via the communication network 9.

[0016] The on-vehicle measurement device 70 also measures the vehicle speed, the vehicle's current position information (latitude, longitude, and altitude), the vehicle's acceleration in three axial directions, etc., using a speedometer, a GPS receiver, an acceleration sensor, etc. mounted on the vehicle. The on-vehicle measurement device 70 transmits data such as the vehicle speed, the vehicle's position information, and the vehicle's acceleration to the tire management server device 80 via the communication network 9.

[0017] 2 is a block diagram showing the functional configuration of the tire management server device 80. The tire management server device 80 has a communication unit 81, a vehicle information acquisition unit 82, a tire wear amount calculation unit 83, a tire load calculation unit 84, and a storage unit 85. Each unit in the tire management server device 80 can be realized in terms of hardware by electronic elements and mechanical parts such as a computer CPU, and in terms of software by a computer program, but here, functional blocks realized by cooperation between them are depicted. Therefore, it will be understood by those skilled in the art that these functional blocks can be realized in various forms by combinations of hardware and software.

[0018] The communication unit 81 is connected to the communication network 9 via wireless or wired communication, and communicates with the tire wear amount measuring device 60, the in-vehicle measuring device 70, and the tire maintenance support device 100.

[0019] The vehicle information acquisition unit 82 acquires vehicle measurement information, such as vehicle speed and position information, and tire measurement information, such as air pressure and temperature measured in the tires 7, from the on-board measurement device 70 via the communication unit 81. The vehicle information acquisition unit 82 also acquires measurement data on the amount of wear of the tires 7 measured by the tire wear amount measuring device 60 via the communication unit 81.

[0020] The vehicle information acquisition unit 82 can calculate and acquire the mileage based on the position information of the vehicle measurement information. The mileage of the vehicle may also be calculated based on the speed data in the vehicle measurement information and the time data associated with the speed data. That is, the mileage of the vehicle can be calculated by multiplying the speed data arranged in chronological order by the time difference until the next time point. If information regarding the mileage of the vehicle is provided from the vehicle or an external device for vehicle management, the vehicle information acquisition unit 82 does not need to calculate the mileage by itself, and may acquire information regarding the mileage from the vehicle or the external device.

[0021] The vehicle information acquisition unit 82 outputs the acquired vehicle travel distance and tire measurement information (tire temperature, air pressure, etc.) to the tire wear amount calculation unit 83. When the tire wear amount calculation unit 83 estimates the amount of tire wear based on a calculation model that uses the acceleration of the vehicle as an input element, the vehicle information acquisition unit 82 outputs the acceleration data in the vehicle measurement information to the tire wear amount calculation unit 83.

[0022] The storage unit 85 is a storage device configured by, for example, an SSD (Solid State Drive), a hard disk, a CD-ROM, a DVD, etc. The storage unit 85 stores operation management information 85a, axle arrangement information 85b, tire identification information 85c, tire remaining groove depth data 85d, tire pressure data 85e, tire load data 85f, and data provided in advance regarding the specifications of various vehicles and tires 7, etc.

[0023] The traffic management information 85a is information about a plurality of vehicles managed by a transportation company or the like, and includes the name of the vehicle, vehicle identification information given to each vehicle, etc. The traffic management information 85a is stored in the storage unit 85 by grouping for each of a plurality of transportation companies. The axle arrangement information 85b is information indicating the axles of each vehicle and the positions of the tires 7 to be mounted thereon.

[0024] The tire identification information 85c is information such as a serial number assigned to each tire 7, and the tire identification information is readably stored, for example, in an RFID tag embedded in the tire 7. The tire identification information may be stored in the storage unit 85 in association with the vehicle on which the tire 7 is mounted and the axle position on the vehicle on which the tire is mounted.

[0025] The tire remaining groove depth data 85d is data of the remaining tire groove depth obtained by subtracting the tire wear amount estimated by the tire wear amount calculation unit 83, and data of the remaining tire groove depth obtained by subtracting the wear amount of the tire 7 periodically measured by the tire wear amount measurement device 60. The tire remaining groove depth data 85d includes data calculated in the past by the tire wear amount calculation unit 83, and data calculated as a future predicted value using average values ​​of the mileage and the air pressure and temperature of the tire 7. Note that the future mileage may be calculated based on an average mileage over the past few years, or a predicted mileage for each month may be calculated from past mileage data that takes into account busy and off-season periods.

[0026] The tire pressure data 85e includes time transition of past air pressure data of the tires 7 measured by the on-board measuring device 70. The tire load data 85f is calculated by the tire load calculation unit 84 based on at least one of the air pressure and temperature of the tires 7, as described later, and stored in the storage unit 85.

[0027] The tire wear amount calculation unit 83 reads and acquires data used appropriately for estimating the wear amount of the tire 7, such as vehicle and tire specification data, from the storage unit 85. The tire wear amount calculation unit 83 also acquires information stored in the storage unit 85, such as axle arrangement information 85b and tire identification information 85c.

[0028] The tire wear amount calculation unit 83 has a calculation model 83a and estimates the wear amount of the tire 7. The calculation model 83a is a learning model that calculates the wear amount of the tire 7 based on input information. Fig. 3 is a schematic diagram for explaining the wear amount estimation and learning of the calculation model 83a. The input data to the calculation model 83a is roughly classified into each system of vehicle measurement information, tire measurement information, and other information.

[0029] The input data related to the vehicle measurement information includes the acceleration and the distance traveled of the vehicle. The distance traveled is acquired by the vehicle information acquisition unit 82 as described above. The input data related to the tire measurement information includes the air pressure and the temperature of the tire 7. The acceleration of the vehicle is used as input data to the calculation model 83a as appropriate.

[0030] The input data based on other information includes road surface conditions estimated based on meteorological information, the maximum load capacity of the vehicle included in the vehicle specification data, and the wear resistance performance of the tire 7 included in the tire specification data. The wear resistance performance of the tire 7 is measured using, for example, a tire wear index value obtained by indexing the wear resistance performance of various tread blends based on a Lambourn abrasion test with a standard blend being set at 100.

[0031] The computation model 83a uses a learning model such as a neural network. The computation model 83a is constructed using a method such as a deep neural network (DNN) or a decision tree. The computation model 83a may be a multiple linear regression model for input information, and may be generated by learning.

[0032] The wear data of the tire 7 measured by the tire wear measuring device 60 is used as training data for learning the calculation model 83a. In the learning process of the calculation model 83a, the wear amount of the tire 7 as output data is estimated by the calculation model 83a based on the input information and compared with the training data. The calculation model 83a compares the estimated wear amount of the tire 7 with the training data, and newly sets various coefficients in the calculation process such as weighting in the calculation model 83a, and learning is performed by repeatedly updating the model.

[0033] The tire wear amount calculation unit 83 estimates the amount of wear of the tire 7 using the trained calculation model 83a, and accumulates the remaining tire groove depth obtained by subtracting the amount of wear of the tire 7 in the memory unit 85 as tire remaining groove amount data 85d.

[0034] When the air pressure of the tire 7 is lower than a predetermined threshold value and when the temperature of the tire 7 is higher than a predetermined threshold value, the tire load calculation unit 84 calculates the tire load amount by multiplying each of the air pressure and temperature by the vehicle travel distance and integrating the results, and stores the results as tire load data 85f in the storage unit 85. The tire load calculation unit 84 may calculate the tire load amount using at least one of the air pressure and the temperature of the tire 7.

[0035] 4 is a block diagram showing the functional configuration of the tire maintenance support device 100. The tire maintenance support device 100 includes a communication unit 10, an operation unit 12, a display unit 14, a storage unit 20, and a control unit 30, and is used in maintenance work such as tire 7 replacement and rotation.

[0036] Each unit in the tire maintenance support device 100 can be realized in hardware terms by electronic elements and mechanical parts such as a computer CPU, and in software terms by a computer program, but here, functional blocks realized by the cooperation of these are depicted. Therefore, it will be understood by those skilled in the art that these functional blocks can be realized in various forms by combining hardware and software.

[0037] The communication unit 10 is connected to the communication network 9 by wireless or wired communication and communicates with the tire management server device 80. The operation unit 12 is an input device that can be operated, such as a touch panel, a switch, a keyboard, and a mouse. By operating the operation unit 12, the worker can select a vehicle and display on the display unit 14 information such as axle arrangement information and maintenance information for the tires 7.

[0038] The display unit 14 is a display device such as a liquid crystal display, and displays the axle arrangement information and maintenance information for the tires 7 based on the operation of the worker. While looking at the screen displayed on the display unit 14, the worker can understand the axle arrangement of the tires 7 and create a maintenance plan for the tires 7 based on the maintenance information.

[0039] The storage unit 20 is a storage device configured, for example, with an SSD (Solid State Drive), a hard disk, a CD-ROM, a DVD, etc. The storage unit 20 stores a computer program executed by the control unit 30, vehicle axle arrangement information acquired from the tire management server device 80, and maintenance information for the tires 7. The vehicle axle arrangement information is determined in correspondence with, for example, the vehicle name and vehicle model, and may be stored in the storage unit 20.

[0040] The control unit 30 includes a vehicle selection unit 31, an axle information acquisition unit 32, a tire information acquisition unit 33, and a display processing unit 34. The vehicle selection unit 31 selects one vehicle from a plurality of vehicles under operational management based on an operation by an operator on the operation unit 12, and notifies the tire management server device 80 of the identification information of the selected vehicle via the communication unit 10. The tire management server device 80 transmits to the tire maintenance support device 100 axle arrangement information 85b corresponding to the vehicle identification information included in the notification, and maintenance information of the tires 7 mounted on the selected vehicle.

[0041] The axle information acquisition unit 32 acquires axle arrangement information of the vehicle selected by the vehicle selection unit 31 from the tire management server device 80. The tire information acquisition unit 33 acquires maintenance information of the tires 7 mounted on the vehicle selected by the vehicle selection unit 31 from the tire management server device 80. The tire information acquisition unit 33 acquires, as the maintenance information of the tires 7, tire remaining tread depth data 85d, tire pressure data 85e, and tire load data 85f of each tire 7 mounted on the vehicle.

[0042] The display processing unit 34 displays, on the display unit 14, the axle arrangement information 85b acquired by the axle information acquisition unit 32 and the maintenance information of the tires 7 acquired by the tire information acquisition unit 33. At this time, the display processing unit 34 may receive, via the operation unit 12, an operation by the worker to select the maintenance information to be displayed, and display the selected maintenance information on the display unit 14.

[0043] Next, the operation of the tire maintenance support device 100 will be described. FIG. 5 is a flowchart showing the procedure of the display processing of maintenance information by the tire maintenance support device 100. The vehicle selection unit 31 of the tire maintenance support device 100 selects one vehicle from a plurality of vehicles under operational management based on the operation of the operation unit 12 by the worker (S1). The vehicle selection unit 31 notifies the tire management server device 80 of the identification information of the selected vehicle via the communication unit 10. The axle arrangement information 85b corresponding to the notified vehicle identification information and the maintenance information of the tire 7 mounted on the vehicle are transmitted from the tire management server device 80 and received by the communication unit 10 of the tire maintenance support device 100.

[0044] The axle information acquisition unit 32 acquires the axle arrangement information received by the communication unit 10 (S2). Furthermore, the tire information acquisition unit 33 acquires the maintenance information of the tires 7 received by the communication unit 10 (S3). In step S3, the tire information acquisition unit 33 acquires the remaining tire tread depth data 85d, the tire pressure data 85e, and the tire load data 85f of each tire 7 mounted on the vehicle as the maintenance information of the tires 7.

[0045] The display processing unit 34 displays the axle arrangement information 85b acquired by the axle information acquisition unit 32 and the maintenance information of the tires 7 acquired by the tire information acquisition unit 33 on the display unit 14 (S4). Furthermore, the display processing unit 34 adds an alert display regarding maintenance such as replacement to the axle arrangement information 85b displayed on the display unit 14 (S5), and ends the processing.

[0046] FIG. 6 is a schematic diagram showing an example of displaying tire remaining groove depth data 85d on the display unit 14. The display screen shown in FIG. 6 displays the identification information of the selected vehicle, axle arrangement information 85b, and tire remaining groove depth data 85d. The axle arrangement information 85b shows three axles A1, A2, and A3 in the front-rear direction of the vehicle, and tire positions B11, B12, etc., mounted on each axle. The axle arrangement information 85b shown in FIG. 6 displays the minimum value of the remaining groove depth of the multiple grooves of each tire as a numerical value. For example, the tire at tire position B11 has a current minimum remaining groove depth of 12.7 mm.

[0047] Since the remaining groove amount of the tires 7 can be calculated or measured for each groove and stored in the memory unit 85 of the tire management server device 80, the display unit 14 may display the numerical values ​​of the remaining groove amount for all grooves of each tire in addition to displaying the axle arrangement information 85b.

[0048] Also, the state of uneven wear of each tire may be displayed based on the remaining groove depth of all grooves of each tire. The state of uneven wear can be classified into center wear, shoulder wear, outer wear, inner wear, etc., and each notation (such as center wear) may be added to each tire in the axle arrangement information 85b so that the state can be understood.

[0049] The tire remaining groove depth data 85d may be displayed for all tires in the axle arrangement information 85b, or may be displayed for some tires. In the example shown in Fig. 6, the tire remaining groove depth data 85d is displayed for tires at tire positions B11, B32, and B33. The tire remaining groove depth data 85d includes past data and future predicted data from the current point in time. In the example shown in Fig. 6, the threshold of the remaining groove depth at which a tire needs to be changed is displayed by a dashed line.

[0050] The tire maintenance support device 100 displays the axle arrangement information 85b and the maintenance information of the tires 7, so that the worker can easily obtain information related to the maintenance of the tires 7 according to the selected vehicle, and the efficiency of the work of formulating a maintenance plan can be improved. The tire maintenance support device 100 may also display information on the mileage of the vehicle on the display unit 14.

[0051] The tire maintenance support device 100 allows the worker to easily know at what point in the future the tires will need to be replaced by displaying the tire remaining tread depth data 85d including the prediction data as the maintenance information for the tires 7. In the example shown in Fig. 6, it can be seen that the tire at position B11 is still far away from needing to be replaced, the tire at position B33 will need to be replaced in one month, and the tire at position B32 should be replaced immediately.

[0052] FIG. 7 is a schematic diagram showing an example of displaying tire pressure data 85e on the display unit 14. The tire pressure data 85e shows the time transition of tire pressure up to the present, and may be displayed for all tires in the axle arrangement information 85b, or may be displayed for some tires. In the example shown in FIG. 7, pressure data is displayed for tires at tire positions B11 and B31. In the example shown in FIG. 7, the set air pressure of each tire is added to the axle arrangement information 85b and displayed. The set air pressure may be a tire manufacturer's recommended value registered as an initial value for each tire, or may be changed by the transport company's administrator on the setting screen within the range of appropriate air pressure.

[0053] The tire maintenance support device 100 displays the time transition of the tire pressure data 85e as maintenance information for the tire 7, thereby allowing the worker to easily know whether or not the tire 7 of the selected vehicle requires maintenance such as checking and refilling the air pressure. In the example shown in Fig. 7, the air pressure has decreased in the tires at positions B11 and B31, and it is understood that the tire pressure needs to be checked and refilled. In addition, when calculating predicted data for the tire pressure data 85e to determine whether or not maintenance is required in the present and future, the slope of the natural decrease in tire pressure up to the present can be calculated to predict the future tire pressure.

[0054] FIG. 8 is a schematic diagram showing an example of displaying tire load data 85f on the display unit 14. The tire load data 85f shows the history of tire load amounts up to the present, and may be displayed for all tires in the axle arrangement information 85b, or may be displayed for some tires. In the example shown in FIG. 8, tire load data is displayed for tires at tire positions B23 and B32. In the example shown in FIG. 8, the threshold value of the tire load amount at which a tire needs to be replaced is shown by a broken line. For example, when the tire load amount reaches the threshold value, the tire is replaced even if the remaining tire groove amount due to tire wear does not reach the threshold value. For example, the tire load amount is accumulated in used tires and retreaded tires. Also, when the remaining tire groove amount due to tire wear reaches the threshold value, the tire is replaced even if the tire load amount does not reach the threshold value. Overall, it is preferable to replace the tire when either the tire load amount or the remaining tire groove amount reaches the threshold value.

[0055] The tire maintenance support device 100 allows the worker to easily know whether or not the tire 7 of the selected vehicle requires replacement maintenance by displaying the history of the tire load data 85f as maintenance information for the tire 7. In the example shown in Fig. 8, it is clear that the tire at position B32 requires replacement, but the tire at position B23 does not require replacement yet.

[0056] FIG. 9 is a schematic diagram showing an example of adding an alert display to the axle arrangement information 85b. In the example shown in FIG. 9, the tire at position B11 is not yet due for replacement, so the tire is surrounded in blue, the tire at position B33 will need to be replaced in one month, so the tire is surrounded in yellow, and the tire at position B32 will need to be replaced soon, so the tire is surrounded in red. Note that similar alert displays can also be added to tires at other tire positions. In addition, the alert display is not limited to the replacement time, and the alert display may be simply based on the tire groove depth. For example, the tire may be surrounded in yellow when the remaining tire groove depth is 5 mm or less, and the tire may be surrounded in red when the remaining tire groove depth is 3 mm or less.

[0057] The tire maintenance assistance device 100 can easily inform the worker of the need to replace the tire 7 of the selected vehicle by adding an alert display to the axle arrangement information 85b and displaying it.

[0058] Next, features of the tire maintenance support method according to the embodiment will be described. The tire maintenance support method displays on the display unit 14 axle arrangement information corresponding to one vehicle selected from a plurality of vehicles under operational management, and maintenance information for tires mounted on the selected vehicle. The maintenance information includes at least one of prediction data of remaining tread depth of tires, time-varying tire air pressure data, and history of tire load data based on at least one of tire air pressure and temperature. According to this tire maintenance support method, it is easy for an operator to know information related to the maintenance of tires 7 according to the selected vehicle, and the work efficiency of maintenance plan formulation can be improved.

[0059] In addition, the tire maintenance support method displays an alert display related to maintenance in addition to the axle arrangement information. According to this tire maintenance support method, the worker can easily be informed of the need to replace the tire 7 of the selected vehicle.

[0060] The above description is based on the embodiments of the present invention. These embodiments are merely examples, and it will be understood by those skilled in the art that various modifications and changes are possible within the scope of the claims of the present invention, and that such modifications and changes are also within the scope of the claims of the present invention. Therefore, the descriptions and drawings in this specification should be treated as illustrative rather than restrictive. [Explanation of symbols]

[0061] 31 vehicle selection unit, 32 axle information acquisition unit, 33 tire information acquisition unit, 34 display processing unit, 100 tire maintenance support device.

Claims

1. A tire maintenance support method for displaying on a display unit vehicle identification information corresponding to one vehicle selected from a plurality of vehicles under operational management, axle arrangement information indicating the positions of the axles and tires of the vehicle, and maintenance information for tires mounted on the vehicle, comprising: The tire maintenance support method, wherein the maintenance information includes time-varying tire remaining tread depth data including predicted data on the remaining tread depth of tires.

2. The tire maintenance support method described in Claim 1, characterized in that the maintenance information includes either time-dependent changes in tire air pressure data, or a history of tire load data based on at least one of tire air pressure and temperature.

3. 3. The tire maintenance support method according to claim 1, wherein an alert display regarding maintenance is added to the axle arrangement information and displayed.

4. A tire maintenance support method as described in claim 1 or 2, characterized in that the maintenance information is displayed corresponding to the positions of the axles and tires in the axle arrangement information.

5. A tire maintenance support method as described in claim 1 or 2, characterized in that the axle arrangement information displays information indicating the current remaining tread depth of the tires.

6. A tire maintenance support method as described in Claim 5, characterized in that the information indicating the remaining tread depth of the tires displayed in the axle arrangement information is the minimum value among the remaining tread depths in multiple grooves of the tire.

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