Tire wear detection system, tire, tire wear detection method, program

Abstract

To provide a tire wear detection system, a tire, a tire wear detection method, and a program capable of continuously detecting the amount of tire wear. [Solution] The tire wear detection system comprises a measurement processing unit that measures a specific quantity related to radio waves transmitted using an antenna 12 that extends in a direction intersecting the tread surface 202 on the inside of the tread surface 202 via a wireless tag 1 provided inside the tire 200, and a detection processing unit that detects the amount of wear on the tread surface 202 based on the measurement results from the measurement processing unit.

Description

Technical Field

[0001] The present disclosure relates to a tire wear amount detection system, a tire, a tire wear amount detection method, and a program.

Background Art

[0002] As a related art, there is known a tire wear detection device that determines whether the wear of a tire has progressed to the embedding position of a wireless tag based on the success or failure of wireless communication with the wireless tag embedded in the tire (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the tire wear detection device according to the above-described related art, although the wear amount of the tire can be discretely detected by stacking a plurality of the wireless tags in the radial direction of the tire, the wear amount of the tire cannot be continuously detected.

[0005] An object of the present disclosure is to provide a tire wear amount detection system, a tire, a tire wear amount detection method, and a program capable of continuously detecting the wear amount of a tire.

Means for Solving the Problems

[0006] A tire wear detection system according to one aspect of the present disclosure comprises a measurement processing unit and a detection processing unit. The measurement processing unit measures a specific quantity related to radio waves transmitted using an antenna that extends in a direction intersecting a specific surface on the inner side of a specific surface on the outer surface of the tire, via a wireless tag provided inside the tire. The detection processing unit detects the amount of wear on the specific surface based on the measurement result from the measurement processing unit.

[0007] In this tire wear detection system, the specific amount that reflects the wear of the specific surface is measured. Therefore, it is possible to continuously detect the wear of the specific surface. [Effects of the Invention]

[0008] According to this disclosure, the amount of tire wear can be continuously detected. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 shows the configuration of a tire wear detection system according to an embodiment of this disclosure. [Figure 2] Figure 2 shows the configuration of the wireless tag in the tire wear detection system according to the present disclosure. [Figure 3] Figure 3 shows the configuration of a terminal device for a tire wear detection system according to an embodiment of this disclosure. [Figure 4] Figure 4 shows the configuration of the server for the tire wear detection system according to the present disclosure. [Figure 5] Figure 5 shows table data used for detecting tire wear in the tire wear detection system according to the embodiment of this disclosure. [Figure 6] Figure 6 is a flowchart showing an example of the tire wear detection process performed in the tire wear detection system according to the embodiment of this disclosure. [Modes for carrying out the invention]

[0010] The embodiments of this disclosure will be described below with reference to the attached drawings. Note that the following embodiments are merely examples of the embodiments of this disclosure and do not limit the technical scope of this disclosure.

[0011] [Configuration of tire wear detection system 100] First, the configuration of the tire wear detection system 100 according to the embodiment of this disclosure will be described with reference to Figures 1 to 4. Here, Figure 2 is a cross-sectional view showing the configuration of a tire 200 in which a wireless tag 1 is embedded.

[0012] The tire wear detection system 100 can detect the amount of wear on the tires 200 (see Figure 2) mounted on the vehicle.

[0013] Specifically, tire 200 is a pneumatic tire fitted to a passenger car.

[0014] Furthermore, tire 200 is not limited to pneumatic tires, but may also be a non-pneumatic tire such as a so-called solid tire. In addition, tire 200 may be a resin tire made of thermoplastic elastomer.

[0015] Furthermore, the vehicle on which the tire 200 is attached is not limited to a passenger car, but may be any mobile body that uses the tire 200 for propulsion. For example, the vehicle may be a bus, truck, motorcycle, three-wheeled passenger car, moped, or bicycle. The vehicle may also be a trailer or a load-carrying vehicle such as a trolley.

[0016] As shown in Figure 1, the tire wear detection system 100 includes a wireless tag 1, a terminal device 2, and a server 3. In the tire wear detection system 100, the terminal device 2 and the server 3 are connected to each other via a communication network such as the Internet or a LAN (Local Area Network). The tire wear detection system 100 can also be considered to include a tire 200.

[0017] The wireless tag 1 is a so-called passive RFID tag.

[0018] As shown in FIG. 2, the wireless tag 1 is provided inside the tire 200. That is, the wireless tag 1 is embedded inside the tire 200. Specifically, the wireless tag 1 is provided inside the tread portion 201 (see FIG. 2) of the tire 200.

[0019] As shown in FIG. 2, the wireless tag 1 includes a main body portion 11 and an antenna 12.

[0020] The antenna 12 is used for receiving radio waves transmitted by the terminal device 2 and transmitting radio waves toward the terminal device 2. For example, the antenna 12 is formed in a coil shape extending in one direction.

[0021] The main body portion 11 is an integrated circuit that operates by receiving the energy of the radio waves of the terminal device 2 received by the antenna 12. As shown in FIG. 2, the main body portion 11 is provided at the central portion in the longitudinal direction of the antenna 12 in the antenna 12. The main body portion 11 includes a control portion and a storage portion. The storage portion is a non-volatile storage device. Tire information regarding the tire 200 in which the wireless tag 1 is embedded is stored in the storage portion. For example, the tire information includes tire type information indicating the type of the tire 200. Also, tag identification information used for identifying the wireless tag 1 is stored in the storage portion. Also, tag type information indicating the type of the wireless tag 1 is stored in the storage portion. The control portion executes a readout process of reading data from the storage portion in response to a request from the terminal device 2 and a transmission process of transmitting the data read by the readout process to the terminal device 2.

[0022] Note that the wireless tag 1 is not limited to a passive RFID tag and may be an active RFID tag.

[0023] Terminal device 2 is an information processing device equipped with a function to read data recorded on wireless tag 1. Specifically, terminal device 2 is a handheld RFID reader.

[0024] As shown in Figure 3, the terminal device 2 comprises a control unit 21, an operation unit 22, a display unit 23, a first communication unit 24, a second communication unit 25, and a storage unit 26.

[0025] The control unit 21 comprehensively controls the terminal device 2. As shown in Figure 3, the control unit 21 includes a CPU 31, a ROM 32, and a RAM 33. The CPU 31 is a processor that performs various arithmetic operations. The ROM 32 is a non-volatile memory device in which information such as control programs for causing the CPU 31 to perform various operations is pre-stored. The RAM 33 is a volatile or non-volatile memory device used as temporary storage memory (work area) for the various operations performed by the CPU 31.

[0026] The operation unit 22 and the display unit 23 are the user interface of the terminal device 2. The operation unit 22 inputs various information to the control unit 21 in response to user operations. For example, the operation unit 22 includes operation keys and a touch panel. The display unit 23 displays various information in response to control instructions from the control unit 21. For example, the display unit 23 is a flat panel display such as a liquid crystal display.

[0027] The first communication unit 24 is a communication interface capable of performing data communication with the wireless tag 1. The first communication unit 24 is equipped with an antenna that emits electromagnetic waves of a predetermined specific frequency. When the wireless tag 1 is within a predetermined communication range, the first communication unit 24 uses the antenna to request the wireless tag 1 to transmit data recorded on the wireless tag 1. The first communication unit 24 also uses the antenna to receive data transmitted from the wireless tag 1. The first communication unit 24 also uses the antenna to measure the intensity of radio waves emitted from the wireless tag 1. For example, the specific frequency is a frequency included in the UHF (ultra-high frequency) band. The communication range is, for example, about 1 meter.

[0028] The second communication unit 25 is a communication interface capable of performing data communication with the server 3.

[0029] The memory unit 26 is a non-volatile memory device. For example, the memory unit 26 is a non-volatile memory such as flash memory.

[0030] Note that terminal device 2 is not limited to a handheld RFID reader, but may also be a smartphone or other device. Furthermore, terminal device 2 may also be an information processing device such as a laptop computer to which a handheld RFID reader is connected.

[0031] Server 3 is an information processing device that performs information processing based on data acquired by terminal device 2.

[0032] As shown in Figure 4, the server 3 comprises a control unit 41, an operation unit 42, a display unit 43, a communication unit 44, and a storage unit 45.

[0033] The control unit 41 provides overall control of the server 3. As shown in Figure 4, the control unit 41 includes a CPU 51, ROM 52, and RAM 53. The CPU 51, ROM 52, and RAM 53 are the same as those of the CPU 31, ROM 32, and RAM 33 of the terminal device 2.

[0034] The operation unit 42 and the display unit 43 are the user interface of the server 3. The operation unit 42 inputs various information to the control unit 41 in response to user operations. For example, the operation unit 42 includes a keyboard, mouse, and touch panel. The display unit 43 displays various information in response to control instructions from the control unit 41. For example, the display unit 43 is a flat panel display such as a liquid crystal display.

[0035] The communication unit 44 is a communication interface capable of performing data communication with the terminal device 2.

[0036] The memory unit 45 is a non-volatile storage device. For example, the memory unit 45 is a storage device such as a non-volatile memory like flash memory, an SSD (solid state drive), or an HDD (hard disk drive).

[0037] Incidentally, a related technology known is a tire wear detection device that determines whether or not the wear of the tire 200 has progressed to the embedding location of the wireless tag 1, based on the success or failure of wireless communication with the wireless tag 1 embedded in the tire 200.

[0038] However, in the tire wear detection device relating to the above-mentioned related technology, while it is possible to discretely detect the amount of wear on the tire 200 by stacking multiple wireless tags 1 in the radial direction of the tire 200, it is not possible to continuously detect the amount of wear on the tire 200.

[0039] In contrast, the tire wear detection system 100 according to the embodiment of this disclosure can continuously detect the wear amount of the tire 200, as described below.

[0040] Specifically, in the tire wear detection system 100, the antenna 12 of the wireless tag 1 extends parallel to the tangent to the outer circumference of the tire 200 on the inside of the tread surface 202 (see Figure 2) (an example of a specific surface in this disclosure), as shown in Figure 2, with both ends in the longitudinal direction reaching the tread surface 202.

[0041] Therefore, in the tire wear detection system 100, when the tread surface 202 of the tire 200 wears down, both ends of the antenna 12 in the longitudinal direction also wear down. In other words, the amount of wear on the tread surface 202 of the tire 200 is reflected in the length of the antenna 12.

[0042] Furthermore, the wireless tag 1 transmits radio waves using the antenna 12.

[0043] Therefore, the tire wear detection system 100 transmits radio waves from the antenna 12 that reflect the amount of wear on the tread surface 202.

[0044] Furthermore, one or both of the longitudinal ends of the antenna 12 do not need to reach the tread surface 202.

[0045] Furthermore, the antenna 12 may extend on the inside of the tread surface 202 in a direction different from the direction parallel to the tangent to the outer circumference of the tire 200. In this case, the antenna 12 only needs to extend on the inside of the tread surface 202 in a direction intersecting the tread surface 202.

[0046] Furthermore, terminal device 2 includes a measurement processing unit 61 as shown in Figure 3.

[0047] Specifically, the memory unit 26 of the terminal device 2 has a first tire wear detection program pre-stored in it, which causes the control unit 21 to function as the measurement processing unit 61 shown in Figure 3. The CPU 31 of the control unit 21 functions as the measurement processing unit 61 by executing the first tire wear detection program.

[0048] Furthermore, server 3 includes a detection processing unit 62 and an output processing unit 63, as shown in Figure 4.

[0049] Specifically, the storage unit 45 of server 3 has a second tire wear detection program pre-stored in it, which causes the control unit 41 to function as the detection processing unit 62 and output processing unit 63 shown in Figure 4. The CPU 51 of the control unit 41 functions as the detection processing unit 62 and output processing unit 63 by executing the second tire wear detection program.

[0050] Furthermore, some or all of the measurement processing unit 61, detection processing unit 62, and output processing unit 63 may be composed of electronic circuits. Also, the first tire wear amount detection program may be a program that causes multiple processors to function as the measurement processing unit 61. Also, the second tire wear amount detection program may be a program that causes multiple processors to function as the detection processing unit 62 and output processing unit 63.

[0051] The measurement processing unit 61 measures a specific quantity related to the radio waves transmitted using the antenna 12 via the wireless tag 1.

[0052] Specifically, the measurement processing unit 61 measures the intensity of the radio waves transmitted by the antenna 12 using the wireless tag 1. In other words, the specified quantity includes the intensity of the radio waves.

[0053] The detection processing unit 62 detects the amount of wear on the tread surface 202 based on the measurement results from the measurement processing unit 61.

[0054] Specifically, the detection processing unit 62 uses the table data D10 shown in Figure 5 to detect the amount of wear on the tread surface 202.

[0055] Here, table data D10 is data showing the correspondence between the intensity of radio waves transmitted from the wireless tag 1 and the amount of wear on the tread surface 202. Table data D10 is stored in advance in the storage unit 45 of the server 3. For example, table data D10 can be created based on the results of an experiment in which the tread surface 202 is worn down by a predetermined standard amount, and the intensity of radio waves transmitted from the wireless tag 1 is checked each time the amount of wear on the tread surface 202 reaches a multiple of the standard amount.

[0056] In other words, the detection processing unit 62 determines that the wear amount of the tread surface 202 is less than 30% if the intensity of the radio waves measured by the measurement processing unit 61 is -60 dBm (decibels / milliwatts) or higher. Furthermore, the detection processing unit 62 determines that the wear amount of the tread surface 202 is 30% or more and less than 60% if the intensity of the radio waves measured by the measurement processing unit 61 is -70 dBm or higher and less than -60 dBm. Furthermore, the detection processing unit 62 determines that the wear amount of the tread surface 202 is 60% or more if the intensity of the radio waves measured by the measurement processing unit 61 is less than -70 dBm.

[0057] Furthermore, the table data D10 is not limited to determining the amount of wear on the tread surface 202 in three stages based on the intensity of radio waves transmitted from the wireless tag 1, but may also determine the amount of wear on the tread surface 202 in four or more stages.

[0058] Alternatively, the detection processing unit 62 may use a calculation formula that shows the correspondence between the intensity of the radio waves transmitted from the wireless tag 1 and the amount of wear on the tread surface 202, instead of the table data D10, to detect the amount of wear on the tread surface 202. The calculation formula can be determined based on the results of the experiment described above.

[0059] The output processing unit 63 outputs the detection result from the detection processing unit 62.

[0060] Specifically, the output processing unit 63 displays a detection result screen, including the detection result from the detection processing unit 62, on the display unit 23 of the terminal device 2.

[0061] For example, the detection result screen includes the detection result from the detection processing unit 62 and a message corresponding to that detection result. For example, if the detection result of the detection processing unit 62 for the amount of wear of the tread surface 202 is "less than 30%", the detection result screen includes a message indicating that the wear condition of the tread surface 202 is good. Also, if the detection result of the detection processing unit 62 for the amount of wear of the tread surface 202 is "30% or more and less than 60%", the detection result screen includes a message indicating that the time to replace the tire 200 is approaching. Also, if the detection result of the detection processing unit 62 for the amount of wear of the tread surface 202 is "60% or more", the detection result screen includes a message urging the replacement of the tire 200.

[0062] The detection result screen may also include the remaining mileage until the tire 200 needs to be replaced, calculated based on the detection results from the detection processing unit 62. For example, the remaining mileage can be calculated using the following formula (1). In formula (1), "Y" is the remaining mileage. In formula (1), "A" is the mileage the tire 200 can travel from the start of use until the tire 200 needs to be replaced. In formula (1), "X" is the amount of wear on the tread surface 202 detected by the detection processing unit 62. In formula (1), "B" is the amount of wear on the tread surface 202 at the time the tire 200 needs to be replaced.

[0063] Y = A - (A × X / B) ... (1)

[0064] Furthermore, the output processing unit 63 may display the detection result screen on a predetermined display unit of an information processing device different from the terminal device 2. Alternatively, the output processing unit 63 may store the detection result from the detection processing unit 62 in the storage unit 45.

[0065] [Tire wear detection process] The tire wear detection method of this disclosure will be described below with reference to Figure 6, along with an example of the procedure for the tire wear detection process executed by the control unit 21 of the terminal device 2 and the control unit 41 of the server 3. Here, steps S11, S12, etc. represent the processing procedure (step) numbers executed by the control unit 21 or the control unit 41. The tire wear detection process is executed when a predetermined user operation is received by the operation unit 22 of the terminal device 2.

[0066] <Step S11> First, in step S11, the control unit 21 uses the first communication unit 24 to request the wireless tag 1 to transmit the data recorded on the wireless tag 1.

[0067] <Step S12> In step S12, the control unit 21 determines whether or not it has received radio waves transmitted by the wireless tag 1.

[0068] Here, if the control unit 21 determines that it has received radio waves transmitted by the wireless tag 1 (Yes side of S12), it proceeds to step S13. If it has not received radio waves transmitted by the wireless tag 1 (No side of S12), the control unit 21 waits in step S12 for the radio waves transmitted by the wireless tag 1 to be received.

[0069] <Step S13> In step S13, the control unit 21 measures the intensity of the received radio waves. The processing in step S13 is an example of the measurement steps of this disclosure and is performed by the measurement processing unit 61 of the control unit 21.

[0070] Specifically, the control unit 21 uses the first communication unit 24 to measure the strength of the received radio waves.

[0071] Furthermore, the control unit 21 transmits the radio wave intensity measurement results to the server 3. The control unit 41 of the server 3 receives the radio wave intensity measurement results transmitted from the terminal device 2 and executes the processes in steps S14 and S15.

[0072] Furthermore, the intensity of the radio waves from the wireless tag 1 received by the first communication unit 24 changes according to the distance between the first communication unit 24 and the wireless tag 1. Therefore, when the tire wear amount detection process is executed, it is desirable that the terminal device 2 be positioned so that the distance between the first communication unit 24 and the wireless tag 1 is predetermined, by the operator or jig performing the tire wear amount detection work of the tire 200.

[0073] <Step S14> In step S14, the control unit 41 detects the amount of wear on the tread surface 202 of the tire 200 based on the detection result of the process in step S13. The process in step S14 is an example of a detection step in this disclosure and is performed by the detection processing unit 62 of the control unit 41.

[0074] Specifically, the control unit 41 uses table data D10 (see Figure 5) to detect the amount of wear on the tread surface 202.

[0075] <Step S15> In step S15, the control unit 41 outputs the detection result obtained from the processing in step S14. The processing in step S15 is performed by the output processing unit 63 of the control unit 41.

[0076] Specifically, the control unit 41 displays the detection result screen, including the detection result from the processing in step S14, on the display unit 23 of the terminal device 2.

[0077] In this way, the tire wear detection system 100 emits radio waves of an intensity that reflects the amount of wear on the tread surface 202 from the antenna 12 of the wireless tag 1 embedded in the tire 200. The tire wear detection system 100 also measures the intensity of the radio waves emitted from the wireless tag 1. As a result, the tire wear detection system 100 can continuously detect the amount of wear on the tread surface 202.

[0078] Table data D10 may be provided for each type of tire 200. In this case, the detection processing unit 62 can use the table data D10 corresponding to the type of tire 200 whose wear amount is detected to detect the wear amount of the tire 200. The type of tire 200 whose wear amount is detected can be identified based on the tire type information included in the tire information read from the wireless tag 1.

[0079] Furthermore, table data D10 may be provided for each type of wireless tag 1. In this case, the detection processing unit 62 can use the table data D10 corresponding to the type of wireless tag 1 that transmitted the radio waves to detect the amount of wear on the tire 200. The type of wireless tag 1 that transmitted the radio waves can be identified based on the tag type information read from the wireless tag 1.

[0080] Furthermore, the output processing unit 63 may cause the terminal device 2's display unit 23 to display the detection result screen, which includes the message indicating that performance on snow or ice cannot be guaranteed, if the tire 200 whose wear amount is detected is a studless tire and the amount of wear on the tread surface 202 detected by the detection processing unit 62 exceeds a predetermined amount.

[0081] Furthermore, the measurement processing unit 61 may measure the resonant frequency of the antenna 12 based on the radio waves transmitted by the wireless tag 1 using the antenna 12. In other words, the specific quantity may include the resonant frequency of the antenna 12. The resonant frequency of the antenna 12 does not change depending on the distance between the first communication unit 24 and the wireless tag 1. Therefore, an operator performing the tire wear detection work can perform the detection work without worrying about the distance between the first communication unit 24 and the wireless tag 1.

[0082] Furthermore, the specified surface in this disclosure is not limited to the tread surface 202 of the tire 200, but may be any surface on the outer surface of the tire 200 that is separate from the tread surface 202. Other possible specified surfaces include the sidewall surface of the tire 200 and the surface around the bead.

[0083] Furthermore, the tire wear detection system 100 may include a plurality of wireless tags 1 provided on the tire 200 corresponding to a plurality of specific surfaces. For example, the tire wear detection system 100 may include a wireless tag 1 corresponding to the tread surface 202, a wireless tag 1 corresponding to the bottom surface of the tread groove, and a wireless tag 1 corresponding to the side surface of the tire 200. In this case, the measurement processing unit 61 only needs to measure the plurality of specific amounts of radio waves transmitted by the plurality of wireless tags 1. Furthermore, the detection processing unit 62 only needs to detect the amount of wear for each of the specific surfaces corresponding to the wireless tag 1. The specific surfaces corresponding to the wireless tag 1 can be identified based on the tag identification information read from the wireless tag 1.

[0084] Furthermore, terminal device 2 may include a detection processing unit 62 and an output processing unit 63. In this case, the tire wear amount detection system 100 does not need to include server 3.

[0085] The embodiments of this disclosure described above include the following disclosures (1) to (8).

[0086] Disclosure item (1) is a tire wear detection system comprising: a measurement processing unit that measures a specific quantity related to radio waves transmitted using an antenna that extends in a direction intersecting a specific surface on the inner side of a specific surface on the outer surface of the tire, using a wireless tag installed inside the tire; and a detection processing unit that detects the amount of wear on the specific surface based on the measurement results from the measurement processing unit.

[0087] According to this system, the specific amount that reflects the amount of wear on the specific surface is measured. Therefore, it is possible to continuously detect the amount of wear on the specific surface.

[0088] Disclosure item (2) is the tire wear detection system described in disclosure item (1), wherein the specified quantity includes the intensity of the radio waves.

[0089] A typical wireless tag reader has a function to measure the strength of the radio waves emitted from the wireless tag, but it does not have a function to measure the resonant frequency of the antenna. In other words, this system allows for a simpler configuration of the device that functions as the measurement processing unit compared to a configuration that measures the resonant frequency of the antenna.

[0090] Disclosure item (3) is the tire wear detection system described in disclosure item (1) or (2), wherein the specified surface includes the tread surface of the tire.

[0091] This system makes it possible to detect the amount of wear on the tread surface.

[0092] Disclosure item (4) is the tire wear detection system described in disclosure item (3), wherein the measurement processing unit measures the specific amount of radio waves transmitted using the antenna, which extends on the inside of the tread surface in a direction parallel to the tangent to the outer circumference of the tire and whose longitudinal ends reach the tread surface.

[0093] This system makes it possible to improve the accuracy of detecting the amount of wear on the tread surface compared to a configuration in which either of the longitudinal ends of the antenna 12 does not reach the tread surface 202.

[0094] Disclosure item (5) is a tire wear detection system according to any of disclosure items (1) to (4), wherein the measurement processing unit measures the specific amount of multiple radio waves transmitted by multiple wireless tags provided on the tire corresponding to multiple specific surfaces, and the detection processing unit detects the amount of wear for each specific surface corresponding to the wireless tag.

[0095] This system makes it possible to detect the amount of wear at multiple points on the tire.

[0096] Disclosure item (6) is a tire in which a wireless tag is embedded that emits radio waves using an antenna that extends in a direction intersecting with a specific surface on the inner side of a specific surface on the outer surface of the tire.

[0097] This tire makes it possible to detect the amount of wear on the specific surface using the tire wear detection system described in any of disclosure items (1) to (5).

[0098] Disclosure item (7) is a tire wear detection method in which one or more processors perform a measurement step of measuring a specific quantity relating to radio waves transmitted using an antenna that extends in a direction intersecting with a specific surface on the inner side of a specific surface on the outer surface of the tire, using a wireless tag provided inside the tire, and a detection step of detecting the amount of wear on the specific surface based on the measurement result from the measurement step.

[0099] This method makes it possible to continuously detect the amount of wear on the specific surface, similar to the system described in disclosure (1).

[0100] Disclosure item (8) is a program that causes one or more processors to execute a measurement step of measuring a specific quantity relating to radio waves transmitted using an antenna that extends in a direction intersecting a specific surface on the inner side of a specific surface on the outer surface of the tire, using a wireless tag installed inside the tire, and a detection step of detecting the amount of wear on the specific surface based on the measurement result from the measurement step.

[0101] According to this program, it is possible to continuously detect the amount of wear on the specific surface, similar to the system described in disclosure (1).

[0102] Furthermore, this disclosure may also be a computer-readable recording medium on which the program described in disclosure item (8) is recorded non-temporarily. [Explanation of symbols]

[0103] 1 Wireless Tag 2 Terminal devices 3 servers 11 Main body 12 antennas 21 Control Unit 22 Control section 23 Display section 24. First Communications Department 25. Second Communications Department 26 Memory section 41 Control Unit 42 Operation section 43 Display section 44 Communications Department 45 Storage section 61 Measurement Processing Unit 62 Detection Processing Unit 63 Output Processing Unit 100 Tire Wear Detection System 200 tires 201 Tread section 202 Tread surface (an example of a specific surface)

Claims

1. A measurement processing unit that measures a specific quantity related to radio waves transmitted using an antenna that extends in a direction intersecting a specific surface on the inner side of a specific surface on the outer surface of the tire, via a wireless tag installed inside the tire, A detection processing unit detects the amount of wear on the specific surface based on the measurement results from the measurement processing unit, A tire wear detection system equipped with the following features.

2. The aforementioned specific quantity includes the intensity of the radio waves. The tire wear detection system according to claim 1.

3. The aforementioned specific surface includes the tread surface of the tire, The tire wear detection system according to claim 1 or 2.

4. The measurement processing unit measures the specific amount of the radio waves transmitted using the antenna, which extends parallel to the tangent to the outer circumference of the tire on the inside of the tread surface and whose longitudinal ends reach the tread surface, via the wireless tag. The tire wear detection system according to claim 3.

5. The measurement processing unit measures the specific quantities of multiple radio waves transmitted by multiple wireless tags provided on the tire corresponding to multiple specific surfaces, The detection processing unit detects the amount of wear for each specific surface corresponding to the wireless tag. The tire wear detection system according to claim 1 or 2.

6. A tire in which a wireless tag is embedded that emits radio waves using an antenna that extends in a direction intersecting with a specific surface on the inner side of the outer surface of the tire.

7. A measurement step in which a wireless tag installed inside the tire measures a specific quantity related to radio waves transmitted using an antenna that extends in a direction intersecting a specific surface on the inner side of a specific surface on the outer surface of the tire, A detection step for detecting the amount of wear on the specific surface based on the measurement results from the measurement step, A method for detecting tire wear amount, performed by one or more processors.

8. A measurement step in which a wireless tag installed inside the tire measures a specific quantity related to radio waves transmitted using an antenna that extends in a direction intersecting a specific surface on the inner side of a specific surface on the outer surface of the tire, A detection step for detecting the amount of wear on the specific surface based on the measurement results from the measurement step, A program designed to run on one or more processors.

Images