Tire inspection system and tire inspection program
Patent Information
- Application Number
- JP2022119058
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-07-26
- Publication Date
- 2026-09-09
- Estimated Expiration
- 2042-07-26
AI Technical Summary
【0009】 本発明によれば、タイヤの偏摩耗状態の検査を効率良く実施することができる。
Smart Images

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Abstract
Description
Technical Field
[0001] The present invention relates to a tire inspection system and a tire inspection program for inspecting the groove depth and uneven wear of tires mounted on vehicles.
Background Art
[0002] Generally, tires wear out according to driving conditions, mileage, and other factors, and the amount of wear also varies depending on the position of the axle on which the tire is mounted. Maintenance such as replacement is required when the depth of the grooves provided in the tire becomes equal to or less than a predetermined amount.
[0003] Patent Document 1 describes a conventional tire uneven wear management method. This tire uneven wear management method reads the tire shape with a scanner and compares it with the shape of the same tire when new. As a result of the comparison, an uneven wear DB is searched based on the difference shape to determine the presence and type of uneven wear. When uneven wear is investigated for all tires of one vehicle, the tire position replacement method extracted by searching the position replacement database and the countermeasure database, and instructions for other countermeasures are displayed.
Prior Art Literature
Patent Literature
[0004]
Patent Document 1
Summary of the Invention
Problem to be Solved by the Invention
[0005] In the tire uneven wear management method described in Patent Document 1, the tire shape is read by a scanner, and the uneven wear database is searched to determine the presence and type of uneven wear. However, in order to accurately acquire the three-dimensional tire shape over the entire circumference of the tire using a scanner, expensive equipment is required, and there is a problem that it also takes labor and time.
[0006] This invention has been made in view of the above circumstances, and its purpose is to provide a tire inspection system and a tire inspection program that can efficiently inspect the uneven wear condition of tires. [Means for solving the problem]
[0007] A tire inspection system according to one aspect of the present invention comprises: a data acquisition unit that acquires groove depth data measured by a groove depth measuring device for measuring the groove depth of a tire; an operation reception unit that receives operation input from an operator regarding the presence or absence of uneven wear for a tire from which groove depth data has been acquired by the data acquisition unit; and a display processing unit that displays schematic diagrams corresponding to a plurality of types of uneven wear when the operation input received by the operation reception unit indicates the presence of uneven wear, wherein the operation reception unit is characterized by receiving operation input from an operator to select the type of uneven wear from the schematic diagrams.
[0008] Another aspect of the present invention is a tire inspection program. The tire inspection program causes a computer to perform the following steps: a data acquisition step of acquiring groove depth data measured by a groove depth measuring device for measuring the groove depth of a tire; an operation reception step of receiving an operation input from an operator regarding the presence or absence of uneven wear for a tire from which groove depth data has been acquired in the data acquisition step; and a display processing step of displaying schematic diagrams corresponding to multiple types of uneven wear when the operation input received in the operation reception step indicates the presence of uneven wear, wherein the operation reception step further accepts an operation input from an operator to select the type of uneven wear from the schematic diagrams. [Effects of the Invention]
[0009] According to the present invention, it is possible to efficiently inspect the uneven wear condition of tires. [Brief explanation of the drawing]
[0010] [Figure 1] This is a schematic diagram showing the overall configuration of the tire inspection system according to the embodiment. [Figure 2] This is a diagram showing the functional configuration of the tire management server device. [Figure 3] This is a block diagram showing the functional configuration of a tire inspection device. [Figure 4] This flowchart shows the procedure for measuring groove depth and uneven wear using a tire inspection system. [Figure 5] This is a schematic diagram showing an example of axle arrangement information. [Figure 6] This is a schematic diagram showing an example of image display on the display unit after groove depth measurement. [Figure 7] This is an example of a screen that accepts user input regarding the presence or absence of uneven wear. [Figure 8] This is an example of a screen displaying schematic diagrams corresponding to multiple types of uneven wear. [Figure 9] This is an example of a screen displayed when heel-and-toe wear is selected. [Figure 10] This is an example of a screen display for acquiring step wear data. [Modes for carrying out the invention]
[0011] The present invention will be described below with reference to Figures 1 to 10, based on preferred embodiments. The same or equivalent components and members shown in each drawing will be denoted by the same reference numerals, and redundant explanations will be omitted as appropriate. Furthermore, the dimensions of the members in each drawing will be enlarged or reduced as appropriate for ease of understanding. Additionally, some members that are not important for explaining the embodiments will be omitted from the drawings.
[0012] (Embodiment) FIG. 1 is a schematic diagram showing the overall configuration of a tire inspection system 100 according to an embodiment. The tire inspection system 100 includes a groove depth measuring device 10, a tire inspection device 20, and a tire management server device 60. The tire inspection system 100 acquires groove depth data inspected for each tire 7 mounted on a plurality of vehicles managed by the tire management server device 60, and inspection results relating to uneven wear conditions.
[0013] The tire inspection device 20 acquires information of tires 7 mounted on a vehicle, acquires groove depth data measured by the groove depth measuring device 10 for each tire, and acquires inspection results obtained by an operator regarding an uneven wear condition. The tire inspection device 20 transmits the measured groove depth data of each tire and the inspection results regarding the uneven wear condition to the tire management server device 60. The tire management server device 60 accumulates the groove depth data of the tires 7 in each vehicle received from the tire inspection device 20 and the inspection results regarding the uneven wear condition.
[0014] The tires 7 are mounted on a plurality of vehicles such as transportation trucks whose operation is managed by, for example, a transportation company. The transportation company can acquire the tire groove depth data accumulated in the tire management server device 60 and the inspection results regarding uneven wear conditions for the plurality of tires 7 mounted on each vehicle, and use the data and results for tire maintenance.
[0015] The groove depth measuring device 10 is, for example, a depth gauge, and is capable of transmitting measured data via communication. An operator uses the groove depth measuring device 10 for each groove provided in a tread portion of the tire 7 mounted on the vehicle, thereby measuring the groove depth. The groove depth of the tire 7 is repeatedly inspected every predetermined period (for example, several months) and accumulated in the tire management server device 60. Further, the groove depth measuring device 10 may automatically measure the depth of each groove of the tire 7 by using a scanner, a stereo camera, or the like.
[0016] For example, if the tire 7 has four grooves extending in the tire circumferential direction in the tread portion of the tire, the groove depth of the tire 7 is measured at four locations in the width direction, and further measured at three locations in the circumferential direction of the same groove, for example, at intervals of 120°. This enables acquisition of uneven wear data in the tire width direction or circumferential direction.
[0017] FIG. 2 is a block diagram showing the functional configuration of the tire management server device 60. The tire management server device 60 includes a communication unit 61, an information processing unit 62, and a storage unit 63. In terms of hardware, each unit in the tire management server device 60 can be implemented by electronic elements such as a computer CPU, mechanical components, and the like, and in terms of software, it is implemented by a computer program or the like. Here, functional blocks implemented by the cooperation of these components are illustrated. Therefore, it is understood by those skilled in the art that these functional blocks can be implemented in various forms by a combination of hardware and software.
[0018] The communication unit 61 is communicatively connected to a communication network 8 via wireless or wired communication, and communicates with the tire inspection device 20.
[0019] The information processing unit 62 receives a transmission request for information related to the vehicle and the tire 7 from the tire inspection device 20 via the communication unit 61. In the transmission request for information related to the vehicle and the tire 7 from the tire inspection device 20, for example, vehicle identification information is specified. The information processing unit 62 reads axle arrangement information 63b and tire identification information 63c from the storage unit 63 for the vehicle or the like specified in the transmission request, and transmits the information to the tire inspection device 20. The information processing unit 62 acquires groove depth data of the tire 7 from the tire inspection device 20 via the communication unit 61, and stores and accumulates the data in the storage unit 63 as tire groove depth data 63d. The information processing unit 62 also acquires an inspection result of the uneven wear state of the tire 7 from the tire inspection device 20 via the communication unit 61, and stores and accumulates the result in the storage unit 63 as uneven wear state data 63e.
[0020] The storage unit 63 is a storage device composed of, for example, an SSD (Solid State Drive), a hard disk, a CD-ROM, a DVD, etc. The storage unit 63 stores vehicle management information 63a, axle arrangement information 63b, tire identification information 63c, tire tread depth data 63d, and uneven wear status data 63e.
[0021] Vehicle management information 63a is information about multiple vehicles whose operation is managed by, for example, a transportation company, and includes the names of the vehicles and vehicle identification information assigned to each vehicle. Axle arrangement information 63b is information indicating the position of the axles and tires 7 to be mounted on each vehicle included in the vehicle management information 63a.
[0022] The tire identification information 63c is information such as a serial number assigned to each tire 7, and for example, the tire identification information is stored in a readable format in an RFID embedded in the tire 7. The tire identification information may also be stored in the storage unit 63 in association with the vehicle on which the tire 7 is mounted and the axle position on which it is mounted on that vehicle.
[0023] The tire groove depth data 63d is data on the groove depth of each tire 7 transmitted from the tire inspection device 20, and is stored in the storage unit 63 along with the date and time of measurement, etc. The uneven wear condition data 63e is data on the inspection results of the uneven wear condition of each tire 7 transmitted from the tire inspection device 20, and is stored in the storage unit 63 along with the date and time of measurement, etc.
[0024] Figure 3 is a block diagram showing the functional configuration of the tire inspection device 20. The tire inspection device 20 comprises a communication unit 21, an operation unit 22, a display unit 23, a storage unit 24, and a control unit 25, and is used for measuring the groove depth of the tire 7 and inspecting the uneven wear condition. The tire inspection device 20 acquires groove depth data of the tire 7 from the groove depth measuring instrument 10 and transmits it to the tire management server device 60. The tire inspection device 20 also acquires data on the inspection results of the uneven wear condition of the tire 7 and transmits it to the tire management server device 60.
[0025] Each part of the tire inspection device 20 can be realized in hardware terms using electronic elements and mechanical parts, including the CPU of a computer, and in software terms using computer programs, etc. However, what is depicted here is a functional block realized through the cooperation of these elements. 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.
[0026] The communication unit 21 connects to the communication network 8 via wireless or wired communication and communicates with the tire management server device 60. The communication unit 21 also connects to the groove depth measuring instrument 10 via wireless or wired communication and acquires data on the groove depth of the tire 7.
[0027] The operation unit 22 is an operable input device such as a touch panel, switch, keyboard, and mouse. By operating the operation unit 22, the operator obtains information about the vehicle and tires from the tire management server device 60 to measure the groove depth of the tire 7 and inspect the uneven wear condition.
[0028] The display unit 23 is a display device such as a liquid crystal display. The display unit 23 displays information related to the axle arrangement, groove depth data of the tire 7 being measured, and information related to the inspection of uneven wear.
[0029] The storage unit 24 is a storage device composed of, for example, an SSD (Solid State Drive), a hard disk, a CD-ROM, a DVD, etc. The storage unit 24 stores computer programs executed by the control unit 25, vehicle axle arrangement information and tire identification information of the tire 7 obtained from the tire management server device 60, data on the groove depth of the tire 7, and information related to the inspection of uneven wear conditions.
[0030] The control unit 25 includes a vehicle information acquisition unit 25a, a data acquisition unit 25b, an operation reception unit 25c, and a display processing unit 25d. The vehicle information acquisition unit 25a requests the tire management server device 60 to transmit information about the vehicle and tires selected by an operator's operation unit 22, for example, and acquires axle arrangement and tire identification information transmitted from the tire management server device 60.
[0031] The data acquisition unit 25b acquires groove depth data from the groove depth measuring device 10 for each tire 7 mounted on a single vehicle, which is measured sequentially. For multiple grooves extending in the circumferential direction of the tire in the tread portion of a single tire 7, the data acquisition unit 25b acquires groove depth data measured at three locations in a single groove, for example, at 120° intervals in the circumferential direction.
[0032] The data acquisition unit 25b sequentially acquires groove depth data measured at three locations for other grooves located adjacent to the tire width. After acquiring groove depth data for all grooves on one tire 7, the data acquisition unit 25b then proceeds to acquire groove depth data for each tire in the vehicle using the same procedure.
[0033] The operation reception unit 25c receives operation input from the operator regarding the presence or absence of uneven wear for the tire 7, whose groove depth data has been acquired by the data acquisition unit 25b. The operation reception unit 25c displays a screen on the display unit 23 for receiving operation input regarding the presence or absence of uneven wear, and receives operation input from the operator to the operation unit 22.
[0034] The operator visually inspects the tire tread to check for uneven wear and makes a determination by referring to the acquired groove depth data. The operator inputs a response of "uneven wear present" or "no uneven wear" using the operation unit 22. The operation reception unit 25c may also accept the operator's response of "unconfirmed" regarding uneven wear. If the operator's input is "uneven wear present", the operation reception unit 25c outputs "uneven wear present" to the display processing unit 25d.
[0035] When the signal input from the operation reception unit 25c indicates that "uneven wear is present," the display processing unit 25d displays schematic diagrams corresponding to several types of uneven wear on the display unit 23. The types of uneven wear include center wear, feather edge wear, heel-and-toe wear, shoulder wear (one-sided wear), shoulder wear (both shoulders wear), and spot wear. Heel-and-toe wear is a form of uneven wear in which the amount of wear differs between the landing side and the toe-off side of the tread blocks divided in the circumferential direction of the tire, resulting in a step between the blocks.
[0036] The operator looks at the schematic diagrams corresponding to multiple types of uneven wear displayed on the display unit 23, determines which type of uneven wear the tire being inspected corresponds to, and inputs the operation to select the type of uneven wear from the schematic diagrams using the operation unit 22.
[0037] The operation reception unit 25c receives operation input from the operator who selects the type of uneven wear using the operation unit 22. When the operation reception unit 25c receives operation input that selects heel-and-toe wear, it outputs to the display processing unit 25d and the data acquisition unit 25b that heel-and-toe wear has been selected.
[0038] When the display processing unit 25d receives a signal from the operation reception unit 25c indicating that heel-and-toe wear has been selected, it displays a screen on the display unit 23 showing how to measure step wear on the blocks of the tread.
[0039] The data acquisition unit 25b acquires groove depth data corresponding to step wear measured by the groove depth measuring instrument 10. The groove depth data corresponding to step wear is, for example, data on the groove depth on the landing side and the push-off side of the tread blocks. The data acquisition unit 25b may also acquire image data of the tread portion of the tire 7 taken by an operator.
[0040] The control unit 25 of the tire inspection device transmits data on the groove depth for each groove of all tires 7 mounted on the vehicle, as well as the inspection results of uneven wear, to the tire management server device 60. The inspection results of uneven wear include, as described above, data on the presence or absence of uneven wear, the type of uneven wear, and step wear in heel-and-toe wear. The information processing unit 62 of the tire management server device 60 stores the groove depth data as tire groove depth data 63d in the storage unit 63, and stores the inspection results of uneven wear as uneven wear condition data 63e in the storage unit 63.
[0041] Next, the operation of the tire inspection system 100 will be described. Figure 4 is a flowchart showing the procedure for measuring groove depth and uneven wear by the tire inspection system 100. The vehicle information acquisition unit 25a of the tire inspection device 20 is assumed to have previously acquired axle arrangement and tire identification information, etc., from the tire management server device 60 for the vehicle whose tire groove depth is to be measured. The data acquisition unit 25b of the tire inspection device 20 selects the tire mounting position to be measured based on the operator's operation on the operation unit 22 (S1).
[0042] The data acquisition unit 25b selects a groove in the tire 7 selected in step S1 and acquires groove depth data measured at three locations in the circumferential direction of the tire (S2). The groove depth data is measured by an operator using the groove depth measuring device 10 and transmitted from the groove depth measuring device 10 to the tire inspection device 20.
[0043] The data acquisition unit 25b determines whether groove depth measurement has been completed for all grooves of the tire 7 (S3). If groove depth measurement is not completed (S3:NO), it selects the next groove and returns to step S2 to repeat the process. If it is determined in step S3 that measurement has been completed for all grooves (S3:YES), the operation reception unit 25c displays a screen on the display unit 23 to receive operation input regarding the presence or absence of uneven wear (S4).
[0044] The operation reception unit 25c determines whether the operator's input indicates that there is or is not uneven wear (S5). If the input in step S5 indicates that there is no uneven wear (S5: NO), the process ends. If the input in step S5 indicates that there is uneven wear (S5: YES), the display processing unit 25d displays schematic diagrams corresponding to multiple types of uneven wear on the display unit 23 (S6).
[0045] The operation reception unit 25c receives an operation input from the operator to select the type of uneven wear (S7). The operation reception unit 25c determines whether the uneven wear selected by the operator is heel-and-toe wear or not (S8). If it is determined in step S8 that it is not heel-and-toe wear (S8:NO), the process is terminated.
[0046] In step S8, if heel-and-toe wear is determined (S8: YES), a screen for acquiring step wear data is displayed on the display unit 23, and the data acquisition unit 25b acquires step wear data and image data of the tread portion (S9), and the process ends.
[0047] Figure 5 is a schematic diagram showing an example of axle arrangement information 63b. The axle arrangement information 63b shown in Figure 5 represents the three axles A1, A2, and A3 in the longitudinal direction of the vehicle, as well as the tire mounting positions B11, B12, etc. on each axle, with a total of 10 tires mounted on the axles. Based on the operator's operation on the control unit 22, the data acquisition unit 25b selects the tire mounting position to be measured and acquires groove depth data based on the flowchart shown in Figure 4. Once the acquisition of all groove depth data and uneven wear inspection results for one tire is complete, the next tire mounting position is selected and groove depth data and uneven wear inspection results are acquired. By repeating this process, groove depth data and uneven wear inspection results are acquired for all tires mounted on the vehicle.
[0048] Figure 6 is a schematic diagram showing an example of image display on the display unit 23 after groove depth measurement. In the example shown in Figure 6, a certain tire 7 has grooves 1 to 5, and the position of each groove in the tire width direction is represented by Sh (shoulder), Me (medium), and Ce (center). In the example shown in Figure 6, the groove depth measurement results for grooves 1 to 5 and the calculated average groove depth for each groove are displayed.
[0049] Figure 7 shows an example of a screen that accepts user input regarding the presence or absence of uneven wear. The operation reception unit 25c displays the screen shown in Figure 7 on the display unit 23 and accepts user input indicating whether the wear is "uneven," "not uneven," or "unconfirmed."
[0050] Figure 8 is an example of a screen displaying schematic diagrams corresponding to multiple types of uneven wear. If the operator selects "uneven wear present" as their input, the display processing unit displays schematic diagrams corresponding to multiple types of uneven wear as shown in Figure 8. The tire inspection system 100 displays schematic diagrams corresponding to multiple types of uneven wear in the tire inspection device 20, allowing the operator to easily select the type of uneven wear while confirming which schematic diagram matches the appearance of the tread portion of the tire 7 being inspected, and enabling efficient inspection of the uneven wear condition of the tire 7.
[0051] For example, if the measurement of the groove depth of all the tires 7 on a vehicle and the inspection of reading the 3D tire shape with a scanner and searching a database of uneven wear to make a judgment are performed separately, it takes time and effort to move workers and prepare measuring equipment. The tire inspection system 100 can proceed with the work so that groove depth measurement and uneven wear inspection are performed sequentially on one tire 7 at a time, and the inspection of the uneven wear condition, including groove depth measurement of the tire 7, can be performed efficiently.
[0052] Figure 9 shows an example of a screen displayed when heel-and-toe wear is selected. The screen in Figure 9 includes shapes indicating where to paste image data of the tread's appearance, shapes to select whether or not tire replacement is necessary, and shapes to select whether or not to measure uneven wear.
[0053] The tire inspection system 100 acquires image data of the tread portion of the tire 7 by the data acquisition unit 25b, thereby storing and accumulating data that visually indicates the state of heel-and-toe wear on the actual tire 7. Furthermore, in the screen display shown in Figure 10 (described later), a shape indicating the location for pasting the image data may be placed, and image data of the tread portion of the tire 7 may be acquired.
[0054] Figure 10 shows an example of a screen display for acquiring step wear data. In the screen display shown in Figure 10, step wear data for grooves 1 to 5 of a certain tire 7 is acquired and displayed sequentially, similar to Figure 6. The data acquisition unit 25b acquires groove depth data for the landing side and push-off side of the tread blocks as step wear data.
[0055] The tire inspection system 100 acquires and stores step wear data in the blocks of the tread portion of the tire 7 using the data acquisition unit 25b, thereby enabling operators to easily understand the progression of heel-and-toe wear and providing data necessary for making decisions regarding tire maintenance.
[0056] Next, the features of the tire inspection system 100 and tire inspection program according to the embodiment will be described. The tire inspection system 100 comprises a data acquisition unit 25b, an operation reception unit 25c, and a display processing unit 25d. The data acquisition unit 25b acquires groove depth data measured by a groove depth measuring device 10 that measures the groove depth of the tire 7. The operation reception unit 25c receives operation input from an operator regarding the presence or absence of uneven wear for the tire 7 for which groove depth data has been acquired by the data acquisition unit 25b. The display processing unit 25d displays schematic diagrams corresponding to multiple types of uneven wear when the operation input received by the operation reception unit 25c indicates the presence of uneven wear. The operation reception unit 25c receives operation input from an operator to select the type of uneven wear from the schematic diagrams. As a result, the tire inspection system 100 can efficiently inspect the uneven wear condition of the tire 7.
[0057] Furthermore, if the type of uneven wear selected by the operation input received by the operation reception unit 25c is heel-and-toe wear, the data acquisition unit 25b acquires data on step wear for the blocks of the tread portion. This allows the tire inspection system 100 to easily understand the progression of heel-and-toe wear and provide the data necessary for making decisions regarding tire maintenance.
[0058] Furthermore, the data acquisition unit 25b acquires image data of the tread portion of the tire 7. This allows the tire inspection system 100 to accumulate data that visually indicates the state of heel-and-toe wear.
[0059] The tire inspection program has a computer execute a data acquisition step, an operation reception step, and a display processing step. The data acquisition step acquires groove depth data measured by a groove depth measuring device 10 that measures the groove depth of the tire 7. The operation reception step accepts an operation input from the operator regarding the presence or absence of uneven wear for the tire 7 for which groove depth data has been acquired in the data acquisition step. The display processing step displays schematic diagrams corresponding to several types of uneven wear if the operation input received in the operation reception step indicates the presence of uneven wear. The operation reception step further accepts an operation input from the operator to select the type of uneven wear from the schematic diagrams. This tire inspection program allows for efficient inspection of the uneven wear condition of the tire 7.
[0060] The embodiments of the present invention have been described above. These embodiments are illustrative, 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. Accordingly, the descriptions and drawings herein should be treated as illustrative rather than limiting. [Explanation of Symbols]
[0061] 7 Tires, 10 Groove depth measuring instrument, 25b Data acquisition unit, 25c Operation reception unit, 25d Display processing unit, 100 Tire inspection system.
Claims
1. A data acquisition unit that acquires groove depth data measured by a groove depth measuring device that measures the groove depth of a tire, For tires from which groove depth data has been acquired by the data acquisition unit, an operation reception unit receives operational input from an operator regarding the presence or absence of uneven wear, The system includes a display processing unit that displays schematic diagrams corresponding to multiple types of uneven wear when the operation input received by the operation reception unit indicates the presence of uneven wear, The tire inspection system is characterized in that the operation reception unit receives an operation input from the operator to select the type of uneven wear from the schematic diagram.
2. The tire inspection system according to claim 1, characterized in that the data acquisition unit acquires step wear data for the blocks of the tread portion when the type of uneven wear selected by the operation input received by the operation reception unit is heel-and-toe wear.
3. The tire inspection system according to claim 1 or 2, further characterized in that the data acquisition unit acquires image data of the tire tread portion.
4. A data acquisition step involves obtaining groove depth data measured by a groove depth measuring device that measures the groove depth of a tire, and For tires from which groove depth data has been acquired through the aforementioned data acquisition step, an operation reception step is performed to receive operational input from an operator regarding the presence or absence of uneven wear, If the operation input received in the operation reception step indicates the presence of uneven wear, a display processing step is performed to display schematic diagrams corresponding to multiple types of uneven wear. Have the computer run it, The tire inspection program is characterized in that the operation reception step further receives an operation input from the operator to select the type of uneven wear from the schematic diagram.
Citation Information
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