WO2022219841A1 - タイヤ管理装置及びタイヤ管理方法 - Google Patents
タイヤ管理装置及びタイヤ管理方法 Download PDFInfo
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- WO2022219841A1 WO2022219841A1 PCT/JP2021/043493 JP2021043493W WO2022219841A1 WO 2022219841 A1 WO2022219841 A1 WO 2022219841A1 JP 2021043493 W JP2021043493 W JP 2021043493W WO 2022219841 A1 WO2022219841 A1 WO 2022219841A1
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- tire
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- 238000000034 method Methods 0.000 title claims description 3
- 238000011156 evaluation Methods 0.000 claims abstract description 62
- 238000004364 calculation method Methods 0.000 claims abstract description 35
- 238000007726 management method Methods 0.000 claims description 69
- 238000004891 communication Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000015654 memory Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 238000013178 mathematical model Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/24—Wear-indicating arrangements
- B60C11/246—Tread wear monitoring systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C2019/004—Tyre sensors other than for detecting tyre pressure
Definitions
- the present disclosure relates to a tire management device and a tire management method.
- Patent Document 1 in order to evaluate whether the driving is suitable for fuel-saving driving, the parameter to determine the rating.
- the content of driving may affect the amount of wear of the tires attached to the vehicle.
- driving such as hard starts and hard braking can reduce tire wear life.
- the evaluation of the conventional system as described above did not take tire wear and the like into consideration.
- An object of the present disclosure which has been made in view of such circumstances, is to provide a tire management device and a tire management method capable of appropriately managing the state of tires attached to a vehicle.
- a tire management device is a tire management device that manages a tire attached to a vehicle, and includes data associated with the travel distance of the vehicle and the wear amount of the tire in a first period.
- a wear state calculation unit that calculates a wear state value that is the travelable distance up to the wear rate or wear life of the tire based on the acquired data; and the calculated wear state value and an evaluation value calculation unit that calculates an evaluation value for the tire based on a comparison between the wear state value and the reference value of the wear state value.
- FIG. 1 is a diagram illustrating a configuration example of a tire management device according to an embodiment of the present disclosure.
- FIG. 2 is a diagram showing a configuration example of a tire management system including the tire management device of FIG.
- FIG. 3 is a diagram for explaining the travelable distance up to the wear life.
- FIG. 4 is a diagram for explaining the travelable distance up to the wear life.
- FIG. 5 is a diagram showing a display example of evaluation values and the like.
- FIG. 6 is a flowchart illustrating an example tire management method according to an embodiment of the present disclosure.
- FIG. 1 shows a configuration example of a tire management device 10 according to this embodiment.
- FIG. 2 shows a configuration example of a tire management system 1 including the tire management device 10 of FIG.
- Tire management device 10 is a device that manages tires 30 attached to vehicle 20 .
- the tire management device 10 can calculate an evaluation value, which will be described later, and present it to the user as management of the state of the tire 30 .
- the user is the user of the tire management device 10 or the tire management system 1 , but particularly includes the driver of the vehicle 20 .
- the tire management device 10 includes a communication section 11, a storage section 12, and a control section 13.
- the control unit 13 includes a data acquisition unit 131 , a wear state calculation unit 132 , an evaluation value calculation unit 133 , a selection unit 134 and an output unit 135 .
- the tire management device 10 may be, for example, a computer such as a server as a hardware configuration. Details of the components of the tire management device 10 will be described later.
- the tire management device 10 may constitute the tire management system 1 together with at least one of the terminal device 50 and the server 60 connected via the network 40 .
- the network 40 is, for example, the Internet, but may be a LAN (Local Area Network).
- the terminal device 50 is, for example, a general-purpose mobile terminal such as a smartphone or a tablet terminal, but is not limited to these.
- the terminal device 50 is possessed by a user.
- the terminal device 50 may acquire data such as the travel distance of the vehicle 20 and transmit the data to the tire management device 10 via the network 40 .
- the terminal device 50 may function as a display device that acquires evaluation values and the like from the tire management device 10 via the network 40 and displays them to the user.
- the terminal device 50 may acquire data such as the distance traveled by wirelessly communicating with the device.
- the server 60 is a computer separate from the tire management device 10, for example.
- the server 60 may be installed, for example, at an inspection facility for the vehicle 20 .
- the server 60 may acquire data such as the travel distance of the vehicle 20 and transmit the data to the tire management device 10 via the network 40 . Further, the server 60 may acquire evaluation values and the like from the tire management device 10 via the network 40 and display them on a display device such as a display connected to the server 60 . If the vehicle 20 is equipped with a device having a communication function, the server 60 may acquire data such as the distance traveled by wirelessly communicating with the device.
- a device mounted on the vehicle 20 may be directly connectable to the network 40 and may transmit data such as travel distance to the tire management device 10 .
- the communication unit 11 includes one or more communication modules connected to the network 40 .
- the communication unit 11 may include a communication module compatible with mobile communication standards such as 4G (4th Generation) and 5G (5th Generation).
- the communication unit 11 may include a communication module compatible with, for example, a wired LAN standard (eg, 1000BASE-T).
- the communication unit 11 may include, for example, a communication module compatible with the wireless LAN standard (IEEE802.11 as an example).
- the storage unit 12 is one or more memories.
- the memory is, for example, a semiconductor memory, a magnetic memory, an optical memory, or the like, but is not limited to these and can be any memory.
- the storage unit 12 functions, for example, as a primary storage device or a secondary storage device.
- the storage unit 12 is built in the tire management device 10, for example, but it is also possible to configure the tire management device 10 to be accessed from the outside via an arbitrary interface.
- the storage unit 12 stores various data used in various calculations executed by the control unit 13. Further, the storage unit 12 may store results of various calculations executed by the control unit 13 and intermediate data.
- the control unit 13 is one or more processors.
- the processor is, for example, a general-purpose processor or a dedicated processor specialized for specific processing, but is not limited to these and can be any processor.
- the control unit 13 controls the overall operation of the tire management device 10 .
- the tire management device 10 may have the following software configuration.
- One or more programs used for controlling the operation of the tire management device 10 are stored in the storage unit 12 .
- the control unit 13 functions as the data acquisition unit 131, the wear state calculation unit 132, the evaluation value calculation unit 133, the selection unit 134, and the output unit 135.
- the data acquisition unit 131 acquires data associated with the travel distance of the vehicle 20 and the wear amount of the tires 30 .
- the data associated with the travel distance of the vehicle 20 and the amount of wear of the tire 30 is transmitted from the ECU (Electronic Control Unit) of the vehicle 20 to an in-vehicle network such as a CAN (Controller Area Network) and the communication function installed in the vehicle 20. It may be obtained via the equipment and network 40 comprising.
- the data associated with the amount of wear of the tire 30 includes, for example, data on the remaining amount of grooves on the tread surface, which is data that directly indicates the amount of wear of the tire 30 .
- the data acquisition unit 131 may acquire data from which the wear amount of the tire 30 can be calculated instead of the direct data of the wear amount of the tire 30 .
- Data from which the amount of wear of the tire 30 can be calculated is, for example, travel history data such as acceleration and braking.
- the data acquisition unit 131 may calculate the wear amount using a relational expression (mathematical model) of accelerator, brake, and wear amount based on past performance data of the tire 30 . That is, the data acquisition unit 131 may predict the wear amount of the tire 30 .
- the past performance data of the tire 30 may be stored in the storage unit 12 and read from the storage unit 12 by the data acquisition unit 131 .
- the data such as the travel distance acquired by the data acquisition unit 131 may be for a certain period of time. However, the period may not be constant (may vary), and is not particularly limited.
- the data acquisition unit 131 acquires data associated with the travel distance of the vehicle 20 and the wear amount of the tires 30 in one month.
- the first period is a certain data acquisition period and the second period is a data acquisition period after the first period.
- the tire management device 10 acquires data for a first period (one month) and calculates an evaluation value based on the data.
- the tire management device 10 acquires new data for the second period (one month) and calculates an evaluation value based on the new data.
- the tire management device 10 repeatedly acquires data every month and calculates an evaluation value based on the acquired data for one month.
- the above data acquired by the data acquisition unit 131 is associated with the vehicle 20 or the driver of the vehicle 20 and accumulated in the storage unit 12 .
- the wear state calculation unit 132 calculates wear state values based on the data acquired by the data acquisition unit 131 .
- the wear state value is a predicted value of the state of the tire 30 and is the travelable distance until the wear life of the tire 30 .
- the travelable distance up to the wear life of the tire 30 can also be calculated from the wear rate of the tire 30 . Therefore, the wear state value may be the wear rate of the tire 30 instead of the travelable distance until the wear life of the tire 30 . That is, the wear state value is the wear rate of the tire 30 or the travelable distance until the wear life.
- the wear state calculator 132 can calculate (predict) the travelable distance until the wear life is reached as follows.
- FIG. 3 shows the travelable distance up to the wear life calculated by the wear condition calculation unit 132 when the data acquisition unit 131 acquires the data for the first period.
- FIG. 4 shows the travelable distance until the wear life is calculated by the wear state calculation unit 132 when the data acquisition unit 131 acquires the data of the second period.
- the horizontal axes in FIGS. 3 and 4 indicate the amount of wear of the tire 30 .
- the amount of wear of the tire 30 is indicated by the difference between the initial remaining groove amount (for example, 8.0 mm) and the current remaining groove amount.
- the maximum value (W max ) of the wear amount of the tire 30 is determined by the difference between the initial remaining groove amount and the remaining groove amount at the end of the wear life (for example, 1.6 mm).
- the vertical axis in FIGS. 3 and 4 indicates the traveling distance of the vehicle 20. As shown in FIG. The travel distance corresponding to the maximum value (W max ) of the amount of wear of the tire 30 is the travelable distance until the wear life.
- the wear amount of the tire 30 is W1 and the travel distance of the vehicle 20 is D1.
- the wear state calculator 132 calculates (predicts) Dx1 , which is the travelable distance up to the wear life, using the prediction curve Cx1 based on the data of the first period.
- the prediction curve C x1 may be obtained, for example, by inputting data values for the first period into a mathematical model based on past performance data. Also, for example, a machine learning model may be used instead of the mathematical model.
- the wear amount of the tire 30 is W 2 -W 1 and the travel distance of the vehicle 20 is D 2 -D 1 .
- the wear state calculation unit 132 calculates (predicts) D x2 , which is the travelable distance up to the wear life, using the prediction curve C x2 based on the data of the second period.
- the mileage of vehicle 20 is substantially the same as in the first period.
- the wear amount of the tire 30 is smaller in the second period than in the first period. Therefore, the travelable distance until the expected wear life is extended from D x1 to D x2 .
- the wear state value calculated by the wear state calculation unit 132 is associated with the vehicle 20 or the driver of the vehicle 20 and accumulated in the storage unit 12 .
- the evaluation value calculation unit 133 compares the wear state value calculated by the wear state calculation unit 132 (in the example of FIGS. 3 and 4, the travelable distance up to the wear life) and the reference value of the wear state value. , an evaluation value for the tire 30 is calculated.
- the evaluation value quantifies the evaluation performed based on the relative difference between the wear state value and the reference value.
- the evaluation value may include the wear state value itself.
- the evaluation value calculation unit 133 may set the reference value based on data associated with the travel distance of the vehicle 20 and the wear amount of the tires 30 during the period before the first period. That is, the evaluation value calculation unit 133 may use the past data of the vehicle 20 stored in the storage unit 12 to set the reference value.
- past data associated with the vehicle 20 instead of past data associated with the vehicle 20, past data associated with the driver of the vehicle 20 may be used to set the reference value. By comparing past driving details as a reference value, the user can objectively know the degree of improvement in driving.
- the evaluation value calculator 133 may set (update) the reference value based on data associated with the travel distance of the vehicle 20 and the wear amount of the tires 30 in the first period. That is, the evaluation value calculator 133 may update the reference value when calculating the evaluation value based on new data.
- the evaluation value calculation unit 133 uses the prediction curve C x1 and the travelable distance D x1 in the first period as reference values, and the prediction curve C x2 and the travelable distance in the second period. Evaluate D x2 .
- the user can see the change in driving from the previous time ( Improvement) can be known, and the desire to improve driving can be further enhanced.
- Improvement when the tire management device 10 repeats calculating the evaluation value based on the data for one month as in the present embodiment, updating the reference value based on the driving in the previous period This is useful for sustaining the user's desire to improve driving.
- the evaluation value calculation unit 133 may set the ideal value (C y1 ) set according to the prediction curve C x1 and D y1 , which is the travelable distance, as the reference values.
- the ideal value may be a target metric that is achievable from the current state of tire 30 wear.
- the ideal value may be set by simulation or may be set based on the best performance of other drivers in the past.
- the evaluation value calculation unit 133 may set (update) the ideal value (C y2 ) set according to the prediction curve C x2 and D y2 as the travelable distance to the reference values.
- the evaluation value calculation unit 133 may calculate scores and rankings as evaluation values using the above reference values (see reference numeral "501" in FIG. 5).
- the score may be calculated by adding or subtracting points depending on the difference, with a reference value of 100, for example.
- the ranking may indicate the order of scores in a plurality of vehicles 20 running with the same or similar tires 30 mounted. By calculating such an evaluation value, it is possible to increase the user's desire to improve driving.
- the evaluation value calculation unit 133 may calculate a value related to the cost of the tire 30 as the evaluation value (see reference numeral "504" in FIG. 5).
- the cost may be the acquisition cost of the tire 30 or the maintenance cost.
- the cost-related values are, for example, the price of one set of tires 30, the annual mileage of the vehicle 20 (see symbol “502" in FIG. 5), and the change in the travelable distance up to the wear life of the tires 30 (see symbol “503" in FIG. ”). In this example calculation, the benefits of operational improvements are shown as costs saved in one year. By including the cost-related value in the evaluation value, the evaluation of the state of the tire 30 can be conveyed to the user in a more comprehensible manner.
- the evaluation value calculation unit 133 may calculate the evaluation value using the average of the plurality of tires 30 attached to the vehicle 20.
- the tires 30 may wear unevenly, for example, the drive wheels may wear more.
- the evaluation value calculated by the evaluation value calculation unit 133 is associated with the vehicle 20 or the driver of the vehicle 20 and accumulated in the storage unit 12 .
- the selection unit 134 selects one or more tires from a plurality of tires having different wear characteristics as a replacement tire proposal to the user.
- the selection unit 134 selects a tire when the wear amount of the tire 30 approaches the maximum value (see W max in FIGS. 3 and 4) and the tire replacement time is near.
- the list of tires with different wear characteristics is stored in the storage unit 12 and read by the selection unit 134 .
- the selection unit 134 may select a tire having wear resistance, for example, when the score in the evaluation value is poor.
- the selection unit 134 can present the user with an appropriate tire replacement according to driving characteristics.
- the output unit 135 outputs the evaluation value calculated by the evaluation value calculation unit 133, the tire data selected by the selection unit 134, and the related data stored in the storage unit 12 to a display device or the like.
- the displays of the terminal device 50 and the server 60 can function as display devices that display evaluation results to the user.
- FIG. 5 shows a display example of an evaluation value and the like on the terminal device 50. As shown in FIG. For example, on the screen of the terminal device 50, the score and ranking (see symbol "501" in FIG. 5), the travelable distance until the wear life (see symbol “503" in FIG. 5), and the cost value (see symbol “504" in FIG. 5) ”) and data of the annual mileage of the vehicle 20 (see symbol “502” in FIG.
- the data of the tire selected by the selection unit 134 may be displayed.
- advice for driving improvement such as "Refrain from starting suddenly” may be displayed.
- the advice for improving driving may be stored, for example, in the storage unit 12 and selected by the output unit 135 .
- FIG. 6 is a flowchart illustrating a tire management method executed by the tire management device 10 according to this embodiment.
- the tire management device 10 acquires data associated with the travel distance of the vehicle 20 and the wear amount of the tires 30 (step S1).
- step S2 the tire management device 10 updates the reference value (step S3).
- step S3 the tire management device 10 proceeds to step S4.
- the tire management device 10 acquires the data in the first period as shown in FIG. case, it may be determined that the update of the reference value is not necessary. Further, the tire management device 10 may determine that the reference value needs to be updated when the data in the second period (data in the new period) is acquired as shown in FIG.
- the tire management device 10 calculates the wear state value (step S4), calculates the evaluation value for the tire 30 by comparing it with the reference value (step S5), and outputs the calculated evaluation value (step S6).
- step S7 When the replacement time of the tire 30 is near (Yes in step S7), the tire management device 10 selects one or more tires from a plurality of tires having different wear characteristics based on the evaluation value (step S8), and selects one or more tires. Then, the tire data obtained is output (step S9). If the tire replacement time is not near (No in step S7), the tire management device 10 terminates the series of processes without selecting replacement tires.
- the tire management device 10 and the tire management method according to the present embodiment can evaluate the state of the tire 30 including wear, and can appropriately evaluate the state of the tire 30 mounted on the vehicle 20. can be managed.
- the configuration of the tire management device 10 is arbitrary.
- the processing executed by the tire management device 10, which is one computer in the above embodiment may be executed by distributed processing by a plurality of computers.
- the server 60 in the tire management system 1 may execute part of the processing of the tire management device 10 (for example, the processing of the data acquisition unit 131).
- tire management system 10 tire management device 11 communication unit 12 storage unit 13 control unit 20 vehicle 30 tire 40 network 50 terminal device 60 server 131 data acquisition unit 132 wear state calculation unit 133 evaluation value calculation unit 134 selection unit 135 output unit
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Abstract
Description
10 タイヤ管理装置
11 通信部
12 記憶部
13 制御部
20 車両
30 タイヤ
40 ネットワーク
50 端末装置
60 サーバ
131 データ取得部
132 摩耗状態算出部
133 評価値算出部
134 選択部
135 出力部
Claims (7)
- 車両に取付けられたタイヤを管理するタイヤ管理装置であって、
第1の期間における前記車両の走行距離及び前記タイヤの摩耗量に関連付けられたデータを取得するデータ取得部と、
取得した前記データに基づいて、前記タイヤの摩耗速度又は摩耗寿命までの走行可能距離である摩耗状態値を算出する摩耗状態算出部と、
算出された前記摩耗状態値と前記摩耗状態値の基準値との比較に基づいて、前記タイヤに関する評価値を算出する評価値算出部と、を備える、タイヤ管理装置。 - 前記評価値は、前記タイヤのコストに関する値を含む、請求項1に記載のタイヤ管理装置。
- 前記評価値は、前記車両に取付けられた複数の前記タイヤの平均が用いられる、請求項1又は2に記載のタイヤ管理装置。
- 前記評価値算出部は、前記第1の期間より前の期間における前記車両の走行距離及び前記タイヤの摩耗量に関連付けられたデータに基づいて、前記基準値を設定する、請求項1から3のいずれか一項に記載のタイヤ管理装置。
- 前記評価値に基づいて、摩耗特性の異なる複数のタイヤから1つ以上のタイヤを選択する選択部を備える、請求項1から4のいずれか一項に記載のタイヤ管理装置。
- 前記データ取得部は、前記第1の期間より後の第2の期間における前記車両の走行距離及び前記タイヤの摩耗量に関連付けられたデータを取得し、
前記評価値算出部は、前記第1の期間における前記車両の走行距離及び前記タイヤの摩耗量に関連付けられたデータに基づいて、前記基準値を更新する、請求項1から5のいずれか一項に記載のタイヤ管理装置。 - 車両に取付けられたタイヤを管理するタイヤ管理装置が実行するタイヤ管理方法であって、
第1の期間における前記車両の走行距離及び前記タイヤの摩耗量に関連付けられたデータを取得するステップと、
取得した前記データに基づいて、前記タイヤの摩耗速度又は摩耗寿命までの走行可能距離である摩耗状態値を算出するステップと、
算出された前記摩耗状態値と前記摩耗状態値の基準値との比較に基づいて、前記タイヤに関する評価値を算出するステップと、を含む、タイヤ管理方法。
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CN117120281A (zh) | 2023-11-24 |
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EP4292836A4 (en) | 2024-10-16 |
US20240181816A1 (en) | 2024-06-06 |
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