Tire comprising plurality of electronic devices

Abstract

The present invention relates to a tire comprising a plurality of electronic devices and, more specifically, to a tire comprising a plurality of electronic devices for transmitting / receiving more accurate information in consideration of the structure of the tire, the dielectric constant of materials, and the like. In order to accomplish the objective, the present invention provides the tire comprising a plurality of electronic devices, the tire comprising: a plurality of electronic devices arranged inside the tire; and a reader unit provided on the outside of the tire, wherein: at least one of the electronic devices is positioned on any one from among the inside of a sidewall and inner and outer surfaces of the tire; and at least another one of the electronic devices is positioned on the surface of an inner liner of the tire.

Description

Tires containing multiple electronic devices

[0001] The present invention relates to a tire including a plurality of electronic devices, and more specifically, to a tire including a plurality of electronic devices for enabling more accurate transmission and reception of information by taking into account the structure of the tire, the permittivity of the material, etc.

[0002] The present invention also relates to a tire including a plurality of electronic devices installed in consideration of tire radio frequency constants to transmit accurate information while improving durability while taking into account tire radio frequency constants.

[0003]

[0004] Recently, with the increase in technological development of connected cars, autonomous vehicles, etc., RFID tires, electronic tires, and intelligent tires with electronic devices attached or inserted into the tires are being developed and sold.

[0005] These intelligent tires are designed to measure tire-related information, process the measured information, and transmit the information to the user.

[0006] And, various wireless transmission methods are being used to transmit this information.

[0007] In particular, the electronic devices installed in intelligent tires are designed with electronic chips and antennas according to the frequency and recognition distance desired by each consumer, and can acquire information transmitted at various frequencies depending on the circuit design of the receiving end.

[0008] Normally, the transmission frequency takes into account the permittivity of air, but since the permittivity of air is practically 1, it is usually designed so that there is no difference between the transmission frequency and the reception frequency.

[0009] However, depending on the installation location of the electronic device, the compound, tire structure, sidewall thickness, and air layer conditions will vary, and the permittivity will also vary depending on the change in these conditions.

[0010] These changes in permittivity cause modulation of the transmission frequency, which reduces the accuracy of the information.

[0011] Accordingly, in the past, the transmission frequency was designed higher to ensure accurate data transmission, but because it was not known specifically how high the transmission frequency should be designed, there was a problem of reduced information reliability.

[0012] <Prior Art Literature>

[0013] U.S. Patent No. 7319380

[0014]

[0015] The purpose of the present invention to solve the above problems is to provide a tire including a plurality of electronic devices to enable more accurate transmission and reception of information by taking into account the structure of the tire, the dielectric constant of the material, etc.

[0016] Another object of the present invention is to provide a tire including a plurality of electronic devices installed taking into account tire radio frequency constants to improve durability while transmitting accurate information.

[0017] The technical problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0018]

[0019] The present invention for achieving the above purpose comprises a plurality of electronic devices provided inside a tire; and a leader provided outside the tire, wherein at least one of the electronic devices is provided to be positioned on one of the inside, inner, and outer surfaces of the sidewall of the tire, and at least another of the electronic devices is provided to be positioned on the inner liner surface of the tire. The present invention provides a tire including a plurality of electronic devices.

[0020] In an embodiment of the present invention, the transmission frequency of the electronic device may be designed by applying a tire radio frequency constant (TRFC) derived by using as a variable a combination of one or more of the permittivity, compound composition, thickness, and number of overlaps of structures positioned on a straight line between the electronic device and the leader unit.

[0021] In an embodiment of the present invention, the tire radio frequency constant may be characterized by including as variables a compound of the sidewall, a thickness of the sidewall, a material of the carcass cord, a compound of the carcass cord, a thickness of the carcass cord, a number of layers of the carcass cord, a compound of the bead filler, a thickness of the bead filler, a compound of the rim cushion, a thickness of the rim cushion, a compound of the inner liner, and a thickness of the inner liner.

[0022] In an embodiment of the present invention, the tire radio frequency constant is: (Wherein, SWC is the compound coefficient of the sidewall, SWT is the thickness coefficient of the sidewall, α is the correction coefficient of the sidewall, CCM is the material coefficient of the carcass cord, CCC is the compound coefficient of the carcass cord, CCT is the thickness coefficient of the carcass cord, CCN is the number of overlaps of the carcass cord, β is the correction coefficient of the carcass cord, BFC is the compound coefficient of the bead filler, BFT is the thickness coefficient of the bead filler, γ is the correction coefficient of the bead filler, RCC is the compound coefficient of the rim cushion, RCT is the thickness coefficient of the rim cushion, δ is the correction coefficient of the rim cushion, ILC is the compound coefficient of the inner liner, ILT is the thickness coefficient of the inner liner, and ε is the correction coefficient of the inner liner) can be characterized by being derived by the above formula.

[0023] In an embodiment of the present invention, the transmission frequency of the electronic device located on any one of the inner, inner, and outer surfaces of the sidewall of the tire may be designed by multiplying the tire radio frequency constant by the target reception frequency.

[0024] In an embodiment of the present invention, it may be characterized in that the second tire radio frequency constant is calculated by multiplying the value of the reception frequency received from the reader unit by the transmission frequency transmitted from the electronic device by the value designed primarily by including the tread properties, thickness, and belt thickness as variables in the tire radio frequency constant.

[0025] In an embodiment of the present invention, the transmission frequency of the electronic device positioned on the inner liner surface of the tire may be designed by multiplying the target reception frequency by the secondary tire radio frequency constant.

[0026] In an embodiment of the present invention, the electronic device located on any one of the inner, inner, and outer surfaces of the sidewall of the tire may be characterized in that, when the point where the bead wire and the bead wire rubber meet is a first point, the point that is the end of the bead filler is a second point, and the point that is the end of the carcass and the belt is a third point, when the electronic device is located between the first point and the second point, it is installed at a point that is 10 to 80% of the length from the first point to the second point, and when the electronic device is located between the second point and the third point, it is installed at a point that is 15 to 95% of the length from the second point to the third point.

[0027] In an embodiment of the present invention, the electronic device positioned on the inner liner surface of the tire may be characterized in that, when one end of the first belt and the surface of the inner liner are drawn in a straight line, the point where the inner liner meets is a fourth point, and when the other end of the first belt and the surface of the inner liner are drawn in a straight line, the point where the inner liner meets is a fifth point, and the electronic device positioned between the fourth point and the fifth point may be characterized in that the electronic device positioned on the inner liner surface is characterized in that the electronic device positioned on the inner liner meets the inner liner.

[0028] In an embodiment of the present invention, the reception frequency of the electronic device located on any one of the inner, inner, and outer surfaces of the sidewall of the tire may be set to a band of 800 to 960 MHz, and the reception frequency of the electronic device located on the inner liner surface of the tire may be set to a band of 300 to 450 MHz or 2.3 to 2.6 GHz.

[0029] In an embodiment of the present invention, the transmission frequency may be designed to be 1.03 times or more or 0.97 times or less of the target reception frequency, which is the intended reception frequency.

[0030] In an embodiment of the present invention, a pairing unit is further provided to pair and synchronize IDs or product information of a plurality of the electronic devices, and the electronic devices may be provided to be installed at a point where a tire radio frequency constant among the tires is within a preset target range.

[0031] In an embodiment of the present invention, the plurality of electronic devices may be configured to store and transmit at least one of a manufacturer, product information, and a serial number among the tire information, and the plurality of electronic devices may be configured to share at least one piece of information among the tire information.

[0032] In an embodiment of the present invention, the electronic device may be characterized in that it is installed at a position that is 110 to 150% of the total length of the bead filler based on a point that is the end of the bead filler.

[0033] In an embodiment of the present invention, the electronic device may be characterized in that it is installed at a point 41 to 60 mm toward the belt based on the point where the bead wire and the bead wire rubber meet.

[0034]

[0035] The effect of the present invention according to the above configuration is that the transmission frequency of the electronic device is designed to reflect the location where information is to be read, the structure of the tire, the dielectric constant according to the material, etc., so that an optimal recognition distance can be provided.

[0036] Additionally, as the value of the reception frequency falls within the error range of the target reception frequency, the information is not modulated and the reliability of the information can be improved.

[0037] Additionally, since the electronic devices are placed in locations where stress is minimal, the possibility of damage during driving can be reduced.

[0038] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0039]

[0040] Figure 1 is an exemplary diagram of an electronic device according to one embodiment of the present invention.

[0041] Figures 2 and 3 are exemplary diagrams showing the positions of an electronic device and a leader unit according to one embodiment of the present invention.

[0042] Figures 4 and 5 are exemplary diagrams showing a first point and a second point according to one embodiment of the present invention.

[0043] Figures 6 and 7 are exemplary diagrams showing a first point, a second point, and a third point according to one embodiment of the present invention.

[0044] Figure 8 is an exemplary configuration diagram of an electronic device according to one embodiment of the present invention.

[0045] Figure 9 is an exemplary diagram showing frequency characteristics according to the thickness of an antenna according to one embodiment of the present invention.

[0046]

[0047] A most preferred embodiment of the present invention provides a tire including a plurality of electronic devices, including a plurality of electronic devices provided inside a tire; and a reader provided outside the tire, wherein at least one of the electronic devices is provided to be positioned on one of the inside, inner, and outer surfaces of the sidewall of the tire, and at least another of the electronic devices is provided to be positioned on the inner liner surface of the tire.

[0048]

[0049] Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention may be implemented in various different forms and is therefore not limited to the embodiments described herein. In the drawings, irrelevant parts have been omitted for clarity of description, and similar parts have been designated with similar reference numerals throughout the specification.

[0050] Throughout the specification, when a part is said to be "connected (connected, contacted, or coupled)" to another part, this includes not only cases where it is "directly connected," but also cases where it is "indirectly connected" with another part in between. Furthermore, when a part is said to "include" a component, this does not exclude other components, but rather implies that it may include other components, unless otherwise specifically stated.

[0051] The terminology used herein is merely used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, it should be understood that the terms "comprises" or "has" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0052] Additionally, terms such as “... part,” “... unit,” and “... module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software.

[0053] Additionally, when a step is said to be located "before" or "after" another step in this specification, this includes not only cases where the step is in a direct time-series relationship with the other step, but also cases where the two steps are in an indirect time-series relationship where the time-series order may be changed, such as a mixing step after each step.

[0054]

[0055] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0056] FIG. 1 is an exemplary diagram of an electronic device according to an embodiment of the present invention, and FIGS. 2 and 3 are exemplary diagrams showing the positions of an electronic device and a leader unit according to an embodiment of the present invention.

[0057] FIGS. 4 and 5 are exemplary views showing a first point and a second point according to one embodiment of the present invention, and FIGS. 6 and 7 are exemplary views showing a first point, a second point, and a third point according to one embodiment of the present invention.

[0058] Referring to FIGS. 1 to 7, a tire (100) according to the present invention can be provided to have a plurality of electronic devices (140).

[0059] And, at least one of the plurality of electronic devices (140) may be positioned on one of the inner, inner, and outer surfaces of the sidewall of the tire (100), and at least another electronic device of the electronic devices (140) may be positioned on the inner liner surface of the tire (100).

[0060] For example, the first electronic device (140a) may be arranged to be located on any one of the inner, inner, or outer surfaces of the sidewall.

[0061] In addition, the tire (100) may be provided to have a first point (110) where the bead wire and the bead wire rubber meet, a second point (120) which is the end of the bead filler, and a third point (130) which is the end of the carcass and the belt.

[0062] The first electronic device (140a) may be attached to the inside of the tire (100), and may be positioned between the first point (110) and the second point (120) or between the second point (120) and the third point (130).

[0063] Specifically, when the first electronic device (140a) is positioned between the first point (110) and the second point (120), it may be arranged to be positioned at a point that is 10 to 80% of the length from the first point (120) as a starting point to the second point (120).

[0064] When the first electronic device (140a) is positioned between the second point (120) and the third point (130), it may be positioned at a point that is 15 to 95% of the length from the second point (120) to the third point (130).

[0065] Alternatively, the first electronic device (140a) may be attached or inserted into the side wall, and may be provided in a range between the first point (110), which is the end of the bead wire, and the third point (130), which is the end of the second belt, at a point 40 mm away.

[0066] In addition, the first electronic device (140a) may be installed at a position that is 110 to 150% of the total length of the bead filler based on the second point (120). In addition, the first electronic device (140a) may be installed at a position that is 41 to 60 mm toward the belt based on the first point (110).

[0067] The above first electronic device (140a) may be arranged so that it is not inserted beyond a point that is half of the total length of the sidewall from the end of the sidewall.

[0068] Another second electronic device (140b) arranged to be positioned on the inner liner surface of the tire (100) may be arranged to be positioned between the shoulder portions on both sides.

[0069] More specifically, when one end of the first belt inserted into the tread of the tire (100) is drawn in a straight line with the surface of the inner liner, the point where it meets the inner liner is referred to as the fourth point (A), and when the other end of the first belt is drawn in a straight line with the surface of the inner liner, the point where it meets the inner liner is referred to as the fifth point (B), the second electronic device (140b) may be provided between the fourth point (A) and the fifth point (B).

[0070] The electronic device (140) provided in this manner may be formed and integrated into a state located inside the tire (100) or may be provided to be attached to the inside of the tire (100).

[0071] Specifically, the electronic device (140) may be formed by being mounted inside the tire (100) and topped with a rubber patch of the same material as the inner liner so as to be integrated with the tire (100). However, the electronic device (140) may also be attached alone to the inside of the tire (100) without a rubber topping.

[0072] In particular, the plurality of electronic devices (140) may be arranged to be installed at points where the stress is minimized within a predetermined installation range. More specifically, the electronic devices (140) may be arranged such that each of the first electronic device (140a) and the second electronic device (140b) is installed at a position where the tire radio frequency constant, the secondary tire radio frequency constant, and the stress are minimized within a limited location. However, since the points where the radio frequency constant and the stress are minimized may be different, in this case, the electronic devices (140) may be arranged to be installed at points where the tire radio frequency constant is minimized within an allowable minimum stress range.

[0073] Meanwhile, a leader unit (150) is provided on the outside of the tire (100), and can be provided to transmit and receive data with the electronic device (140).

[0074] The above electronic device (140) and the above reader unit (150) may be arranged to transmit and receive data within a range of at least 1 to 10 cm, but the recognition range is not limited thereto.

[0075] The above leader unit (150) may be arranged to correspond one-to-one with a plurality of the above electronic devices (140).

[0076] For example, the first leader unit (150a) may be installed on the exterior of a vehicle equipped with the tire (100) and configured to transmit and receive information with the first electronic device (140a). The first leader unit (150a) thus installed may be used to share information about the tire (100) with the exterior of the vehicle.

[0077] In addition, the second reader unit (150b) may be provided inside a vehicle equipped with the tire (100) to transmit and receive information with the second electronic device (140b). The second reader unit (150b) provided in this manner may be provided to share information about the tire (100) inside the vehicle and to notify the status of the tire, such as its air pressure.

[0078] The tire (100) according to the present invention may further include a pairing unit (160) provided to pair and synchronize the tire ID or product information of a plurality of the electronic devices (140).

[0079] The above pairing part (160) can be provided at locations such as the leader part (150), tire wheel, and inside the vehicle, as shown in FIGS. 2 and 3.

[0080] Additionally, at least one of the plurality of electronic devices (140) may be provided in a powered manner and at least one may be provided in a non-powered manner.

[0081] The pairing unit (160) provided in this manner can be configured to synchronize an RFID equipped with a single 96-bit memory and a sensor equipped with multiple memories, thereby sharing tire IDs and synchronizing product information. Furthermore, the pairing unit (160) provided in this manner can be configured to segment RFID data and provide information to the sensor.

[0082] More specifically, the pairing unit (160) may be arranged to read the tire ID of each of the electronic devices (140), match the read tire ID of each of the electronic devices (140) with S / W, and confirm it by a method such as random number generation. In addition, the pairing unit (160) may be arranged to pair the tire ID according to the matching and record the tire ID information recorded in the non-powered electronic device (140) in the memory of the electronic device (140) including the power.

[0083]

[0084] Figure 8 is an exemplary configuration diagram of an electronic device according to one embodiment of the present invention.

[0085] Referring to FIG. 8, the electronic device (140) may include a sensor (141), memory (142), a main chip (143), an antenna (144), and a power source (145).

[0086] The above sensor (141) may be provided to collect status information on the condition of the tire.

[0087] The above memory (142) may be provided to store the above state information.

[0088] Specifically, the memory (142) may be provided to store the status information, tag ID, tire ID, and tire information, and may be provided with a plurality of storage spaces.

[0089] For example, the memory (142) may be a storage space for recording a tire ID and may be a memory of 256 bits or less, and may include manufacturer, item information, and serial barcode.

[0090] Additionally, among the above storage spaces, a memory of 2,000 bits or less may be provided for recording additional tire information, and the above storage spaces may be provided for additionally recording tire information.

[0091] The data stored in the storage space of the above memory (142) may be arranged to use hexadecimal or binary numbers.

[0092] The main chip (143) may be configured to manage information stored in the memory (142). In addition, the main chip (143) may be configured to transmit information requested from outside among the information stored in the memory (142) to the outside via the antenna (144). In addition, the main chip (143) may store information transmitted from the outside in the memory (142).

[0093] The above antenna (144) can be configured to enable one-way or two-way transmission and reception of data.

[0094] The above power source (145) may include a battery or an energy harvester, and may be configured to supply power to the electronic device (140) wirelessly or wiredly. However, the electronic device (140) may also be configured as a wireless transponder without a power source (145).

[0095] The shape of the electronic device (140) provided in this manner is not limited, but may be provided in a form having at least one side of a polygon. In this case, the electronic device (140) may be provided in a plate shape, so that the attachment is performed such that the flat portion of the electronic device (140) and the inner liner are in parallel contact. The present invention provided in this manner can further reduce the risk of damage to the electronic device (140) and improve attachment stability.

[0096] For example, the total length of the electronic device (140) may be set to be 45 to 75 mm, and the width and thickness may be set to be within 3 mm. Preferably, the width and thickness of the electronic device (140) may be set to be a plate-shaped RFID of 0.4 to 0.6 mm.

[0097] A leader unit (150) is provided on the outside of the above tire (100), and can be provided to transmit and receive data with the electronic device (140).

[0098] The above electronic device (140) and the above reader unit (150) may be arranged to transmit and receive data within a range of at least 1 to 10 cm, but the recognition range is not limited thereto.

[0099]

[0100] Figure 9 is an exemplary diagram showing frequency characteristics according to the thickness of an antenna according to one embodiment of the present invention.

[0101]

[0102] Transmitting Frequency Receiving Frequency Air Condition 1,776MHz 1,776MHz Electronic device topped with two rubber sheets 1,776MHz 1,428MHz Electronic device attached to the tire surface only 1,776MHz 1,180MHz Electronic device attached to the tire surface after topping 1,776MHz 1,080MHz Embedded in the tire 1,776MHz 1,052MHz

[0103] Transmitting Frequency Receiving Frequency Air Condition 1,510MHz 1,510MHz Electronic device topped with two rubber sheets 1,510MHz 1,214MHz Electronic device attached to the tire surface only 1,510MHz 1,003MHz Electronic device attached to the tire surface after topping 1,510MHz 918MHz Embedded in tire 1,510MHz 894MHz

[0104] Referring to Figure 9, Tables 1 and 2, one can see frequency changes according to rubber topping, etc., and frequency changes according to the thickness of the antenna (144). In this way, even if the transmission frequency is the same, it can be seen that the reception frequency decreases compared to the transmission frequency due to the permittivity as the number of objects that must pass through increases.

[0105] Accordingly, the electronic device (140) and the leader unit (150) can be designed so that the reception frequency becomes the target reception frequency, and the transmission frequency can be designed to be greater than the target reception frequency.

[0106] Specifically, the transmission frequency can be designed by applying a tire radio frequency constant (TRFC) derived by taking as variables one or more combinations of the permittivity, compound composition, thickness, and number of overlaps of structures positioned in a straight line between the electronic device and the leader unit.

[0107] The above tire radio frequency constant may include variables such as a sidewall compound, a sidewall thickness, a carcass cord material, a carcass cord compound, a carcass cord thickness, a number of carcass cord layers, a bead filler compound, a bead filler thickness, a rim cushion compound, a rim cushion thickness, an inner liner compound, and an inner liner thickness.

[0108] More specifically, the tire radio frequency constant can be calculated by the following mathematical expression 1.

[0109]

[0110]

[0111]

[0112] Here, SWC is the compound coefficient of the sidewall, SWT is the thickness coefficient of the sidewall, α is the correction coefficient of the sidewall, CCM is the material coefficient of the carcass cord, CCC is the compound coefficient of the carcass cord, CCT is the thickness coefficient of the carcass cord, CCN is the number of overlaps of the carcass cord, β is the correction coefficient of the carcass cord, BFC is the compound coefficient of the bead filler, BFT is the thickness coefficient of the bead filler, γ is the correction coefficient of the bead filler, RCC is the compound coefficient of the rim cushion, RCT is the thickness coefficient of the rim cushion, δ is the correction coefficient of the rim cushion, ILC is the compound coefficient of the inner liner, ILT is the thickness coefficient of the inner liner, and ε is the correction coefficient of the inner liner.

[0113] Specifically, for each variable, SWC is the compound coefficient of the sidewall, which can be set within a range of 0 to 10. In addition, the sidewall can be adjusted in basic units of 0.1 depending on the mixing ratio of natural rubber, synthetic rubber, and other polymers.

[0114] SWT is the thickness coefficient of the sidewall, which can be set within the range of 0 to 1. The sidewall thickness can be adjusted in increments of 0.1, ranging from 2 to 100 mm.

[0115] α is a correction factor for the sidewall, which can be determined within the range of 0 to 1 depending on the shape of the sidewall. Typically, it can be set to a value of 0.7.

[0116] CCM is the material coefficient of the carcass code, which can be set within the range of 0 to 5. The material coefficient of the carcass code can be adjusted depending on the material of the carcass code, such as nylon or steel.

[0117] CCC is the compound coefficient of the carcass code, which can be set within the range of 0 to 5. In addition, the compound coefficient of the carcass code can be determined according to the carcass topping compound material.

[0118] CCT is a thickness coefficient of the carcass code, and can be set within a range of 0 to 1 depending on the thickness of the carcass code.

[0119] CCN is the number of overlapping carcass codes, and can be set to be distinguished according to the number of carcass layers from the outer surface of the sidewall to the electronic device (140), and can be set within the range of 0 to 50.

[0120] β is a correction coefficient of the carcass code, and can be set within a range of 0 to 0.2 depending on the shape of the carcass code, and is typically set to 0.1.

[0121] BFC is the compound coefficient of the bead filler, which can be adjusted in units of 0.1 depending on the rubber compounding ratio and can be set within the range of 0 to 5.

[0122] BFT is a thickness coefficient of the bead filler, and can be set within a range of 0 to 1 depending on the thickness of the bead filler.

[0123] γ is a correction coefficient of the bead filler, and can be set within a range of 0 to 0.5 depending on the shape of the bead filler, and is typically set to 0.2.

[0124] RCC is the compound coefficient of the rim cushion, and is adjusted in units of 0.1 depending on the rubber compounding ratio, and can be set within the range of 0 to 10.

[0125] RCT is a thickness coefficient of the rim cushion, which is adjusted according to the thickness of the rim cushion and can be set within the range of 0 to 1.

[0126] δ is a correction coefficient of the rim cushion, and is set to be within the range of 0 to 0.8 depending on the shape of the rim cushion, and can typically be set to 0.1.

[0127] ILC is the compound coefficient of the inner liner, and can be adjusted in units of 0.1 depending on the type and number of inner liners, and can be set within the range of 0 to 10.

[0128] ILT is a thickness coefficient of the inner liner, and can be set within a range of 0 to 1 depending on the thickness of the inner liner.

[0129] ε is a correction coefficient of the inner liner, and can be set within a range of 0 to 0.2 depending on the shape of the inner liner, and is typically set to 0.1.

[0130] When a tire is designed, each correction factor (α, β, γ, δ, ε) is determined within a set range and can be set to always have the same value until the tire structure is changed.

[0131] In addition, each correction coefficient (α, β, γ, δ, ε) may be set to be 1.5 times larger than the initially set value when the electronic device (140) is located between the second point (120) and the third point (130).

[0132] Additionally, the tire radio frequency constant can be derived by further including a correction factor of an object around the sensor (141) and a sensor correction factor.

[0133] The tire radio frequency constant calculated in this way can be used to obtain the transmission frequency of the electronic device (140) required for design by multiplying it by the target reception frequency.

[0134] For example, the first electronic device (140a) can be designed to derive a transmission frequency by multiplying a tire radio frequency constant and a target reception frequency, which is a target reception frequency, and to have such a transmission frequency.

[0135] In addition, the secondary tire radio frequency constant for deriving the second electronic device (140b) may be designed by adding the tread properties, thickness, and belt thickness as variables to the existing tire radio frequency constant to obtain a value designed primarily, and multiplying the value of the reception frequency received from the leader unit (150) by the transmission frequency transmitted from the second electronic device (140b).

[0136] The above second electronic device (140b) can be designed to have a transmission frequency calculated by multiplying the target reception frequency by the second tire radio frequency constant derived in this way.

[0137] In this way, the electronic device (140) can be designed to have a main chip (143) and related circuits for obtaining a transmission frequency calculated by considering the tire radio frequency constant derived according to the location.

[0138] For example, if the tire radio frequency constant is calculated as 1.69 and the target reception frequency is 1,052 MHz, the electronic device (140) can be designed so that the transmission frequency becomes 1,776 MHz, which is the product of 1.69 and 1,052.

[0139] The receiving frequency of the receiving end of the first electronic device (140a) may be set in the 800 to 960 MHz band, and the receiving frequency of the receiving end of the second electronic device (140b) may be set in the 300 to 450 MHz or 2.3 to 2.6 GHz band.

[0140] Meanwhile, the transmission frequency may be designed to be 1.03 times or more or 0.97 times or less of the target reception frequency.

[0141] The above electronic device (140) may be provided in any one of the following ways: attachment, adhesion, insertion, or integration into the interior of the tire (100).

[0142] The electronic device (140) provided in this manner can be arranged to enable linkage between the electronic device (140) and the tire and the outside world through a step of reading each electronic device ID through a pairing tool for linkage, a step of matching and verifying each electronic device ID with software to generate a random number, etc., a step of pairing the ID of each electronic device, and a step of recording tire ID information recorded in the electronic device (140) in memory.

[0143] As described above, the present invention can provide an optimal recognition distance because it designs the transmission frequency of the electronic device (140) by reflecting the location where information is to be read, the structure of the tire, the dielectric constant according to the material, etc.

[0144] In addition, according to the present invention, since the value of the reception frequency is within the error range of the target reception frequency, the information is not modulated, and the reliability of the information can be improved.

[0145] And according to the present invention, since the electronic device (140) is provided at a position where stress is minimized, the possibility of damage occurring during driving can be reduced.

[0146]

[0147] Although the description of the present invention has been illustrated with limited drawings, it is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical spirit or essential characteristics of the present invention. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single component may be implemented in a distributed manner, and likewise, components described as distributed may be implemented in a combined form. Furthermore, the described techniques may be performed in a different order than the described method.

[0148] The embodiments described in this specification and the accompanying drawings merely illustrate some of the technical concepts encompassed by the present invention. Therefore, the scope of the present invention is defined by the claims below, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

[0149] <Explanation of symbols>

[0150] 100: Tire

[0151] 110: Point 1

[0152] 120: Second point

[0153] 130: Third point

[0154] 140: Electronic devices

[0155] 140a: First electronic device

[0156] 140b: Second electronic device

[0157] 141: Sensor

[0158] 142: Memory

[0159] 143: Main chip

[0160] 144: Antenna

[0161] 145: Power

[0162] 150: Leader Department

[0163] 150a: 1st Leader Division

[0164] 150b: Second Leader Division

Claims

1. Multiple electronic devices provided inside the tire; and A leader portion provided on the outside of the above tire; At least one of the above electronic devices is arranged to be located on one of the inner, inner, or outer surfaces of the sidewall of the tire, A tire including a plurality of electronic devices, wherein at least one of the electronic devices is positioned on a surface of an inner liner of the tire.

2. In paragraph 1, The transmission frequency of the above electronic device is, A tire including a plurality of electronic devices, characterized in that the tire is designed differently from the reception frequency by applying a tire radio frequency constant (TRFC) derived by using as a variable one or more combinations of the permittivity, compound composition, thickness, and number of overlaps of structures positioned on a straight line between the electronic device and the leader unit.

3. In paragraph 2, The above tire radio frequency constant is, A tire including a plurality of electronic devices installed in consideration of a tire radio frequency constant, characterized in that the tire includes variables such as a sidewall compound, a sidewall thickness, a carcass cord material, a carcass cord compound, a carcass cord thickness, a number of carcass cord layers, a bead filler compound, a bead filler thickness, a rim cushion compound, a rim cushion thickness, an inner liner compound, and an inner liner thickness.

4. In paragraph 3, The above tire radio frequency constant is, (Where, SWC is the compound coefficient of the sidewall, SWT is the thickness coefficient of the sidewall, α is the correction coefficient of the sidewall, CCM is the material coefficient of the carcass cord, CCC is the compound coefficient of the carcass cord, CCT is the thickness coefficient of the carcass cord, CCN is the number of overlaps of the carcass cord, β is the correction coefficient of the carcass cord, BFC is the compound coefficient of the bead filler, BFT is the thickness coefficient of the bead filler, γ is the correction coefficient of the bead filler, RCC is the compound coefficient of the rim cushion, RCT is the thickness coefficient of the rim cushion, δ is the correction coefficient of the rim cushion, ILC is the compound coefficient of the inner liner, ILT is the thickness coefficient of the inner liner, and ε is the correction coefficient of the inner liner.) A tire including a plurality of electronic devices characterized by what is derived by the above formula.

5. In paragraph 3, A tire including a plurality of electronic devices, characterized in that the transmission frequency of the electronic device is designed by multiplying the tire radio frequency constant by the target reception frequency.

6. In paragraph 3, A tire including a plurality of electronic devices, characterized in that the second tire radio frequency constant is calculated by multiplying the value of the reception frequency received from the reader unit by the transmission frequency transmitted from the electronic device to the first designed value by further including the tread properties, thickness, and belt thickness as variables in the tire radio frequency constant.

7. In paragraph 6, A tire including a plurality of electronic devices, characterized in that the transmission frequency of the electronic device positioned on the inner liner surface of the tire is designed by multiplying the target reception frequency by the second tire radio frequency constant.

8. In paragraph 1, It further includes a pairing unit configured to pair and synchronize tire IDs or product information of a plurality of the above electronic devices; A tire including a plurality of electronic devices installed in consideration of a tire radio frequency constant, wherein the electronic device is installed at a point among the tires where the tire radio frequency constant is within a preset target range.

9. In paragraph 8, A plurality of the above electronic devices, It is designed to store and transmit at least one of the tire information, including manufacturer, product information, and serial number. A tire including a plurality of electronic devices installed in consideration of a tire radio frequency constant, wherein the plurality of electronic devices are arranged to share at least one piece of information from the tire information.

10. In the first paragraph, the electronic device, When the point where the bead wire and the bead wire rubber meet is called the first point, the point where the end of the bead filler is called the second point, and the point where the end of the carcass and the belt is called the third point, When located between the first point and the second point, it is installed at a point that is 10 to 80% of the length from the first point to the second point, A tire including a plurality of electronic devices, characterized in that when located between the second point and the third point, the electronic devices are installed at a point that is 15 to 95% of the length from the second point to the third point.

11. In paragraph 1, The electronic device, which is arranged to be positioned on the inner liner surface of the tire, When one end of the first belt and the surface of the inner liner are drawn in a straight line, the point where it meets the inner liner is called the fourth point, and when the other end of the first belt and the surface of the inner liner are drawn in a straight line, the point where it meets the inner liner is called the fifth point. A tire including a plurality of electronic devices, characterized in that they are provided between the fourth point and the fifth point.

12. In paragraph 1, The receiving frequency of the electronic device located on any one of the inner, inner, and outer surfaces of the sidewall of the tire is set to a band of 800 to 960 MHz. A tire including a plurality of electronic devices, characterized in that the receiving frequency of the electronic devices positioned on the inner liner surface of the tire is set to a band of 300 to 450 MHz or 2.3 to 2.6 GHz.

13. In paragraph 2, The above transmission frequency is, A tire including a plurality of electronic devices characterized by being designed to have a target reception frequency of 1.03 times or more or 0.97 times or less of the target reception frequency.

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