Tire including electronic device, and information collection system for vehicle tire

Abstract

The present invention relates to an information collection system for a vehicle tire and, more specifically, to an information collection system for a vehicle tire, which may wirelessly collect information from a tire. Accordingly, the present invention provides the information collection system for a vehicle tire, the information collection system comprising: a tire internal installation device (200) installed inside a tire (100) and comprising a sensor module (210) for collecting information of the tire and a transmission module (220) for transmitting the information collected from the sensor module (210); and a reception unit (300) for receiving a signal from a transmission unit (220) of the tire internal installation device (200), wherein a transmission frequency of the transmission module (220) is set 1.2 to 2 times higher than a frequency being measured by the reception unit (300).

Description

Information collection system for tires and vehicle tires including electronic devices

[0001] The present invention relates to a tire including an electronic device for transmitting accurate information by making a target reception frequency correspond to an actual reception frequency, and to an information collection system for a vehicle tire capable of wirelessly collecting information from the tire.

[0002]

[0003] With the recent increase in technological developments such as connected cars and autonomous vehicles, RFID tires, electronic tires, and intelligent tires with electronic devices attached or embedded in the tires are being developed and sold.

[0004] These intelligent tires are designed to measure tire-related information, process the measured information, and transmit the information to the user.

[0005] And, various wireless transmission methods are being used to transmit this information.

[0006] Intelligent tire monitoring systems (ITMS) are technologies that enhance vehicle safety by installing chips or sensors in tires to monitor tire condition and then relay this information to the driver in real time. These ITMs communicate with various safety devices in the vehicle to ensure driver and passenger safety, providing tire monitoring data to these devices.

[0007] Additionally, tires equipped with RFID tags contain a chip that stores various tire history information and an antenna for wireless communication with a reader. The chip not only stores unique tire information, such as the manufacturing date, manufacturer, and product number, but also stores and updates all logistics information, from the tire production process to sales.

[0008] The structure is such that information from the above reader is stored and updated in the chip through the antenna, and the information stored in the chip is transmitted to the reader through the antenna. The following related prior art documents will be reviewed. The identification codes in the following prior art documents are unrelated to the present invention.

[0009] Korean Patent No. 10-1500213, 'Intelligent Tire System', discloses an intelligent tire system comprising: a bearing assembly configured to surround a wheel rim; a sensor module configured to constantly sense the inner surface of a tire that contacts the ground by being installed to rotate relative to the wheel rim by the bearing assembly; and a light source installed on a side of the sensor module; and configured to illuminate the inner surface of the tire that contacts the ground by the light source.

[0010] Korean Patent No. 10-1435409, 'RFID tag for tire', relates to an RFID tag for tire that can prevent damage or unrecognition of a tire-mounted RFID tag due to internal or external interference while the tire is running, and can maintain tire information attached to the tire without the RFID tag coming off throughout the life of the tire. The RFID tag has a substrate that is long in the longitudinal direction, an RFID chip and antenna installed on the upper portion of the substrate, and an attachment portion that is arranged on the lower portion of the substrate for attachment to the inner wall surface of the tire, and the attachment portion is characterized in that it is located only in a portion of the rear surface of the RFID tag.

[0011] However, the technology of No. 0-1500213 or No. 10-1435409 had a problem in that it was not easy to control the distance between the transmitter and receiver.

[0012] Meanwhile, 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.

[0013] 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.

[0014] 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.

[0015] These changes in permittivity cause modulation of the transmission frequency, which reduces the accuracy of the information.

[0016] Accordingly, in the past, the transmission frequency was designed higher to transmit accurate data, but because it was not known specifically how high the transmission frequency should be designed, there was a problem of low information reliability.

[0017]

[0018] <Prior Art Literature>

[0019] (Patent Document) Republic of Korea Patent No. 10-1500213

[0020] (Patent Document) Republic of Korea Patent No. 10-1435409

[0021] (Patent Document) U.S. Patent No. 7319380

[0022]

[0023] The purpose of the present invention to solve the above problems is to provide a tire information collection system that provides an optimal recognition distance according to the required purpose in wirelessly transmitting information within the tire and including an electronic device whose transmission frequency is designed in consideration of the tire radio frequency constant so that the target reception frequency and the actual reception frequency correspond to each other so that accurate information is transmitted.

[0024] 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.

[0025]

[0026] In order to achieve the above object, one embodiment of the present invention provides a tire including an electronic device, which includes an electronic device provided inside a tire; and a receiving device provided outside the tire, wherein the transmission frequency of the electronic device and the receiving device is designed such that the receiving frequency is a target receiving frequency, and the transmission frequency is designed to be greater than the target receiving frequency.

[0027] Another embodiment of the present invention provides a vehicle tire information collection system, comprising: a tire internal installation device installed inside a tire, comprising a sensor module for collecting tire information, and a transmission module for transmitting information collected from the sensor module; and a receiving unit for receiving a signal from a transmission unit of the tire internal installation device; wherein the transmission frequency of the transmission module is set to be 1.2 to 2 times higher than the frequency measured by the receiving unit.

[0028] Another embodiment of the present invention provides a tire including an electronic device having a transmission frequency designed in consideration of a tire radio frequency constant having a first point where a bead wire and a bead wire rubber meet, a second point which is an end of a bead filler, and a third point which is an end of a carcass and a belt, wherein the electronic device is arranged to be positioned between the first point and the second point or between the second point and the third point, and the electronic device is characterized in that the transmission frequency is designed using the tire radio frequency constant as a variable.

[0029]

[0030] Another embodiment of the present invention provides a method for manufacturing a tire including an electronic device, comprising: a step of calculating a tire radio frequency constant (TRFC) inside a tire; a step of deriving a mounting position inside the tire where the tire radio frequency constant is minimized; a step of designing an electronic device by applying the tire radio frequency constant at the mounting position; and a step of installing the designed electronic device at the mounting position.

[0031]

[0032] According to one embodiment of the present invention according to the above configuration, the transmission frequency of the electronic device is designed by considering the tire radio frequency constant that reflects the permittivity according to the location where information is to be read, the structure of the tire, the material, etc., so that an optimal recognition distance can be provided, and 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.

[0033] In addition, the information collection system for vehicle tires has the effect of providing an optimal recognition distance according to the dielectric constant of the tire material, the location of the receiving unit, and the structure of the tire when applying a tire internal installation device installed inside the tire.

[0034]

[0035] 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.

[0036]

[0037] FIG. 1 is a cross-sectional view showing an embodiment in which a tire internal installation device of a vehicle tire information collection system of the present invention is installed at an inner location of the tire corresponding to the tread portion.

[0038] FIG. 2 is a cross-sectional view showing an embodiment in which a tire internal installation device of a vehicle tire information collection system of the present invention is installed at an inner position of the tire corresponding to the sidewall.

[0039] Fig. 3 is a cross-sectional view illustrating an embodiment in which a tire internal installation device is installed by being inserted into a pocket of an inner liner.

[0040] Fig. 4 is a schematic diagram illustrating the configuration of one embodiment of a tire internal installation device.

[0041] Figure 5 is a cross-sectional view illustrating the installation location of an electronic device installed on a side wall.

[0042] Figure 6 is a graph showing the test results measuring frequency shift in an example in which an antenna was attached to a tire and an example in which a rubber topping was applied after attachment.

[0043] FIG. 7 and FIG. 8 are exemplary diagrams showing a first point and a second point of a tire including an electronic device according to one embodiment of the present invention.

[0044] FIGS. 9 and 10 are exemplary diagrams showing a first point, a second point, and a third point of a tire including an electronic device according to one embodiment of the present invention.

[0045] FIG. 11 is an exemplary diagram showing the attachment location of an electronic device of a tire including an electronic device according to one embodiment of the present invention.

[0046] FIG. 12 is a flowchart of a method for designing a transmission frequency of a tire including an electronic device according to an embodiment of the present invention.

[0047] FIG. 13 is an exemplary diagram of a tire including an electronic device according to one embodiment of the present invention.

[0048] Figure 14 is an exemplary diagram of an electronic device according to one embodiment of the present invention.

[0049] Figure 15 is a flowchart of a method for manufacturing a tire including an electronic device according to one embodiment of the present invention.

[0050]

[0051] The most preferred embodiment according to the present invention is a system for collecting information on a vehicle tire, comprising: a tire internal installation device (200) installed inside a tire (100) and configured to include a sensor module (210) for collecting information on the tire, and a transmission module (220) for transmitting information collected from the sensor module (210); and a receiving unit (300) for receiving a signal from the transmission unit (220) of the tire internal installation device (200); characterized in that the transmission frequency of the transmission module (220) is set to be 1.2 to 2 times higher than the frequency measured by the receiving unit (300).

[0052]

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0059]

[0060] Fig. 1 is a cross-sectional view showing an embodiment in which a tire internal installation device of a vehicle tire information collection system of the present invention is installed at an inner location of a tire corresponding to a tread portion, and Fig. 2 is a cross-sectional view showing an embodiment in which a tire internal installation device of a vehicle tire information collection system of the present invention is installed at an inner location of a tire corresponding to a sidewall portion. The present invention relates to an information collection system for a vehicle tire, as shown in Figs. 1 and 2,

[0061] A tire internal installation device (200) is provided, which is installed inside a tire (100) and comprises a sensor module (210) for collecting information about the tire, and a transmission module (220) for transmitting information collected from the sensor module (210); and a reception unit (300) for receiving a signal from the transmission unit (220) of the tire internal installation device (200); and a vehicle tire information collection system is provided, wherein the transmission frequency of the transmission module (220) is set to be 1.2 to 2 times higher than the frequency measured by the reception unit (300).

[0062] The above tire internal installation device (200) is an electronic device including a transmission module (220) equipped with an antenna, and transmits information collected from the sensor module (210) or information such as the tire's manufacturing date and product number to an external receiver (300). The recognition distance of the radio waves transmitted by the above transmission module (220) must be limited. If it is too long, it may not be distinguished from signals from other tires, and if it is too short, a problem occurs in which the receiver (300) must be placed too close.

[0063] The tire internal installation device (200) is designed with a chip and antenna applied according to the frequency and recognition distance, and can acquire information transmitted at various frequencies according to the circuit design of the receiving end. Once the frequency of the receiving end is determined, the frequency of the transmitting end is transmitted through size or frequency modulation accordingly. In addition, the recognition distance of radio waves is also affected by the surrounding permittivity. The tire permittivity varies depending on the tire compound, tire structure, tire thickness, air layer, etc. Considering the permittivity of the tire, it is preferable that the transmission frequency of the transmitting module (220) be set 1.2 to 2 times higher than the frequency measured by the receiving unit (300) in order to easily limit the recognition distance to a distance between 0.1 mm and 1,500 mm.

[0064] As an example, in order to implement a recognition distance of 1 to 550 mm, it is preferable that the transmission frequency is 150 to 270 kHz and the reception frequency is 125 to 135 kHz.

[0065] In the embodiment of Fig. 1, the tire internal installation device (200) is installed on the inner surface corresponding to the tread portion (110) of the tire (100), and the receiving unit (300) discloses a configuration formed in a plate shape so that the tire can run upward on the ground on which the tire runs. The receiving unit (300) receives information collected from the sensor module (210) or information such as the manufacturing date and product number of the tire when the tire is positioned on the upper surface. Alternatively, when the tire passes the receiving unit, payment of a fee or confirmation of passage can be applied.

[0066] In the embodiment of Fig. 2, the tire internal installation device (200) is configured to be installed on the inner side corresponding to the sidewall portions (120) of the tire (100). The above configuration can be applied when the receiving end (300) is used by approaching the sidewall portion of the tire. In addition, the above configuration has the advantage of minimizing the impact transmitted to the tire internal installation device (200) because it is installed on the sidewall portion (120) spaced apart from the tread portion (110) to which the impact is directly transmitted.

[0067] Fig. 3 is a cross-sectional view illustrating an embodiment in which a tire internal installation device is inserted and installed into a pocket (141) of an inner liner (140). In the embodiment of Fig. 3, in the manufacturing process of a tire (100), before the step of curing the green tire in which the semi-finished products are assembled, a pocket is formed in the inner liner semi-finished product of the green tire and then cured. If the tire internal installation device (200) can operate normally even under the temperature and pressure of the curing conditions, a more stable bonding structure can be expected by curing it together. For this purpose, the tire internal installation device (200) is preferably manufactured from a silicone-based material or a carbon-based material.

[0068] In place of the configuration of integrating it into the inner liner as described above, installation using adhesives, etc. is possible.

[0069] Fig. 4 is a schematic diagram illustrating the configuration of one embodiment of a tire internal installation device. The present invention provides an information collection system for a vehicle tire, which is configured such that, as illustrated in Fig. 3, the sensor module (210) of the tire internal installation device (200) includes at least one selected from a temperature sensor (211) for measuring the temperature inside the tire, an acceleration sensor (212) for measuring the acceleration movement of the tire, a gyro sensor (213) for detecting the angular velocity of the tire, and a pressure sensor (214) for measuring the pressure inside the tire.

[0070] Safety devices in vehicles include the Electronic Stability Control (ESC) which selectively operates the front, rear, left, and right wheels to stabilize the vehicle and even correct driver errors by preventing the vehicle from slipping in extremely unstable situations such as when accelerating, braking, or cornering; the Tire Pressure Monitoring System (TPMS) which informs the driver of the pressure and temperature information of each tire to improve the durability, ride comfort, and braking power of each tire; the Anti-Lock Brake System (ABS) which prevents wheel slipping; and the Traction Control System (TCS) which prevents the driving wheels from slipping when the vehicle suddenly starts or accelerates. The information collection system of the vehicle tire of the present invention can provide information to the safety device of the vehicle, and accordingly, the information received from the receiving unit (300) is sent to the vehicle attitude stability control device (ESC: Electronic Stability Control), the tire pressure monitoring system (TPMS: Tire pressure monitoring system), the anti-lock brake system (ABS, Anti-Lock Brake System), and the traction control system (TCS: Traction Control System).

[0071] The above tire internal installation device (200) is an electronic device and requires power. Accordingly, the tire internal installation device (200) may include a power supply device (230) therein. Alternatively, as another embodiment, the tire internal installation device (200) may not include a power supply device therein, but may include a wireless charging module (240) capable of charging power from an external magnetic field. If necessary, the receiving unit (300) may be equipped with a charging module for charging the wireless charging module (240). If the receiving unit (300) is equipped with a charging module, the power required for the tire internal installation device (200) can be supplied only while receiving information, thereby solving problems such as poor reception due to power shortage.

[0072] In addition, it is preferable that the passive type electronic device be installed by being attached / inserted into the side wall. Fig. 5 is a cross-sectional view illustrating the installation location of the electronic device installed in the side wall. As shown in Fig. 5, the installation location of the electronic device is preferably located 40 mm from the end of the bead wire (a) and before the end of the second belt (b) begins.

[0073] More preferably, it is installed within a radius of 40 mm to 60 mm from the center of the bead wire.

[0074] The information collection system for a vehicle tire according to one embodiment of the present invention described above has the effect of providing an optimal recognition distance according to the permittivity of the tire material, the location of the receiving unit, and the structure of the tire when applying a tire internal installation device (200) installed inside the tire.

[0075]

[0076] Example

[0077] When designing electronic devices with tires in mind, evaluations have shown that the frequency changes.

[0078] The transmission frequency was designed to be 1776 MHz and an evaluation was conducted, and the frequency reduction phenomenon as shown in Table 1 below was confirmed.

[0079] Transmission frequency Airborne electronic device Topping with two rubber sheets Electronic device only attached to the tire surface Electronic device attached to the tire surface after topping Tire embedded 1776 MHz 1776 MHz 1428 MHz 1180 MHz 1080 MHz 1052 MHz 1510 MHz 1510 MHz 1214 MHz 1003 MHz 918 MHz 894 MHz

[0080]

[0081] In the above test, the dielectric constant of the location where the electronic device was embedded in the tire was measured to be 2.85, and through this, the transmission frequency was confirmed to be (1776 MHz) * 1 / √(2.85) = 1052 MHz.

[0082] Figure 6 is a graph showing the test results measuring frequency shift in an example in which an antenna was attached to a tire and an example in which a rubber topping was applied after attachment. As can be seen in the graph of Figure 5, the frequency shift in the example in which the rubber topping was applied was greater, confirming that the change in permittivity due to the rubber topping was greater.

[0083]

[0084] Meanwhile, FIGS. 7 and 8 are exemplary views showing a first point and a second point of a tire including an electronic device according to another embodiment of the present invention, and FIGS. 9 and 10 are exemplary views showing a first point, a second point, and a third point of a tire including an electronic device according to one embodiment of the present invention.

[0085] FIG. 11 is an exemplary diagram showing the attachment location of an electronic device of a tire including an electronic device according to one embodiment of the present invention.

[0086] Referring to FIGS. 7 to 11, a tire (1000) including an electronic device can be provided to have a first point (1100) where a bead wire and a bead wire rubber meet, a second point (1200) which is the end of a bead filler, and a third point (1300) which is the end of a carcass and a belt.

[0087] In addition, the electronic device (140) may be arranged to be positioned between the first point (1100) and the second point (1200) or between the second point (1200) and the third point (1300).

[0088] Specifically, when the electronic device (1400) is positioned between the first point (1100) and the second point (1200), it may be arranged to be positioned at a point that is 10 to 80% of the length from the first point (1200) as a starting point to the second point (1200).

[0089] When the electronic device (1400) is positioned between the second point (1200) and the third point (1300), it may be positioned at a point that is 15 to 95% of the length from the second point (1200) to the third point (1300).

[0090] Alternatively, the electronic device (1400) 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 (1300), which is the end of the second belt, at a distance of 40 mm.

[0091] Additionally, the electronic device (1400) may be positioned within a radius of 40 mm to 60 mm from the center of the bead wire.

[0092] In addition, the electronic device (1400) 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.

[0093] The position of the above electronic device (1400) may also be provided on the inside of the tread.

[0094] The above electronic device (1400) is designed and equipped with an electronic chip, an antenna, and a circuit, and can be equipped to transmit information wirelessly using a frequency.

[0095] The above electronic device (1400) may be attached to a tire (1000) including the electronic device by an adhesive, a pressure-sensitive adhesive, or the like, or may be provided to be integrated into a semi-finished product by being inserted and vulcanized during a molding process.

[0096] The above electronic device (1400) may be designed to have a higher transmission frequency than the frequency received from the outside, taking into account the tire radio frequency constant including the permittivity of the tire.

[0097]

[0098] Specifically, referring to FIG. 14, which is an example diagram of an electronic device according to one embodiment of the present invention, the electronic device (1400) may include a sensor (1410), a memory (1420), a main chip (1430), an antenna (1440), and a power source (1450).

[0099] The above sensor (1410) may be arranged to collect status information on the condition of the tire.

[0100] The above memory (1420) may be provided to store the above state information.

[0101] The above memory (1420) 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.

[0102] For example, the memory (1420) may be a storage space for recording a tire ID and may be comprised of a memory of 256 bits or less, and may include manufacturer, item information, and serial barcode.

[0103] 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.

[0104] The data stored in the storage space of the above memory (1420) may be arranged to use hexadecimal or binary.

[0105] The main chip (1430) may be configured to manage information stored in the memory (1420). In addition, the main chip (1430) may be configured to transmit information requested from the outside among the information stored in the memory (1420) to the outside via the antenna (1440). In addition, the main chip (1430) may store information transmitted from the outside in the memory (1420).

[0106] The above antenna (1440) may be configured to enable one-way or two-way transmission and reception of data.

[0107] The above power supply (1450) may be arranged to supply power to the electronic device (1400) wirelessly or wiredly.

[0108] The shape of the electronic device (1400) 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 (1400) may be provided in a plate shape, so that the attachment is performed such that the flat portion of the electronic device (1400) 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 (1400) and improve attachment stability.

[0109] For example, the total length of the electronic device (1400) 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 (1400) may be set to be a plate-shaped RFID having a width and thickness of 0.4 to 0.6 mm.

[0110] A receiving device (1500) is provided on the outside of the above tire (1000), and can be provided to transmit and receive data with the electronic device (1400).

[0111] The above electronic device (1400) and the above receiving device (1500) 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.

[0112]

[0113] Below, a method for designing a transmission frequency of a tire (1000) including an electronic device is described.

[0114] FIG. 12 is a flowchart of a method for designing a transmission frequency of a tire including an electronic device according to an embodiment of the present invention.

[0115] Referring to FIG. 12, a method for designing a transmission frequency of a tire including an electronic device may include a step (S10) of selecting an installation location where an electronic device is attached or integrated, a step (S20) of deriving a radio frequency constant at the selected installation location, a step (S30) of designing a transmission frequency of the electronic device so that a reception frequency measured by a receiving device becomes a preset target reception frequency by applying the radio frequency constant, and a step (S40) of attaching or integrating the electronic device to a tire.

[0116]

[0117] 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

[0118]

[0119] 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

[0120]

[0121] Referring to Fig. 6, and , it can be confirmed that the received frequency decreases depending on the thickness of the semi-finished product.

[0122] Additionally, it can be confirmed that the reception frequency is lowered compared to the transmission frequency depending on the location where the electronic device (1400) is installed, the conditions under which it is topped, and the conditions under which it is embedded in the tire.

[0123] Based on these results, it can be concluded that the tire radio frequency constants, including the permittivity of the tire, vary depending on the material properties, tire structure, arrangement and thickness of the semi-finished product, and whether or not an air layer is included.

[0124] In addition, it can be seen that the frequency changes according to the rubber topping, etc. and the thickness of the antenna (1440) and that even if the transmission frequency is the same, the reception frequency decreases compared to the transmission frequency due to the permittivity as the number of objects that must pass through increases.

[0125] Accordingly, the electronic device (1400) and the receiving device (1500) can be designed so that the receiving frequency becomes the target receiving frequency, and the transmitting frequency can be designed to be greater than the target receiving frequency.

[0126] In the next step (S20) where the radio frequency constant at the selected installation location is derived, arrangements can be made to derive the tire radio frequency constant from the selected installation location to the receiving device (1500).

[0127] At this time, the tire radio frequency constant may be characterized by using semi-finished products at a position where the tire and the straight line meet, excluding air, when the installation locations of the electronic device (1400) and the receiving device (1500) are drawn in a straight line as variables.

[0128] 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 located in a straight line between the electronic device and the receiving device.

[0129] And, it may further include one or more rubbers, one or more carcasses and polymers for the composition of the tire.

[0130] That is, it can be arranged to derive a tire radio frequency constant due to obstacles located between the electronic device (1400) and the receiving device (1500).

[0131] Specifically, the 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.

[0132] More specifically, the tire radio frequency constant can be calculated by the following <Mathematical Formula 1>.

[0133]

[0134] <Mathematical Formula 1>

[0135]

[0136]

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] CCM is the material coefficient of the carcass code and 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.

[0142] CCC is a compound coefficient of the carcass code, which can be set within a range of 0 to 5. In addition, the compound coefficient of the carcass code can be determined according to the carcass topping compound material.

[0143] 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.

[0144] 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 (1400), and can be set within the range of 0 to 50.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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 (1400) is between the second point (1200) and the third point (1300).

[0157] Next, in the step (S30) where the transmission frequency of the electronic device is designed so that the reception frequency measured by the receiving device becomes a preset target reception frequency by applying the radio frequency constant, the tire radio frequency constant calculated in this way can be used to obtain the transmission frequency of the electronic device (1400) required for the design by multiplying it by the target reception frequency.

[0158] For example, the electronic device (1400) may be designed to derive a transmission frequency by multiplying a tire radio frequency constant and a target reception frequency, which is the intended reception frequency, and to have such a transmission frequency.

[0159] To this end, the electronic device (1400) may be designed so that the electronic chip, antenna, and circuit have the designed transmission frequency.

[0160] Meanwhile, the receiving device (150) may be further configured to select information by determining whether the receiving frequency falls within a preset error range from the target receiving frequency.

[0161] Specifically, the receiving device (1500) may be arranged to first compare, when a frequency is received, whether the received reception frequency falls within a preset error range with the target reception frequency.

[0162] In addition, when the reception frequency is outside the target reception frequency and the preset error range, the information received when the reception frequency is outside the target reception frequency and the preset error range may be arranged to be discarded without being used.

[0163] That is, the receiving device (1500) may be arranged to obtain only information corresponding to a reception frequency within a preset error range, and then analyze the information to provide the user with necessary information.

[0164] The present invention, thus prepared, can further improve the reliability of information provided to users because it can minimize the possibility of information being modulated according to frequency.

[0165] Alternatively, the receiving device (1500) may be arranged to provide a failure notification to the user when the receiving frequency does not continuously fall within a preset error range from the target receiving frequency for a preset period of time.

[0166] Next, in the step (S40) where the electronic device is attached or integrated into the tire, the electronic device (1400) designed to have the designed transmission frequency can be arranged to be attached or integrated into the tire.

[0167] Specifically, the electronic device (1400) may be attached to a tire (1000) including an electronic device whose transmission frequency is designed in consideration of the tire radio frequency constant by an adhesive, a pressure-sensitive adhesive, or the like, or may be provided to be integrated into a semi-finished product by being inserted and vulcanized during a molding process.

[0168] As described above, the present invention can provide an optimal recognition distance because it designs the transmission frequency of the electronic device by considering the tire radio frequency constant that reflects the location where information is to be read, the structure of the tire, the permittivity according to the material, etc.

[0169] Specifically, the present invention, which is provided as described above, can be provided to transmit and receive data from 1 mm to 1,500 mm from the surface of a tire into which the electronic device (1400) is inserted, and further, the present invention can prevent information from being modified and improve the reliability of the information as the value of the reception frequency is within the error range of the value of the target reception frequency.

[0170]

[0171] Additionally, the tire radio frequency constant can be derived by further including a correction factor of an object around the sensor (1410) and a sensor correction factor.

[0172] The tire radio frequency constant thus calculated can be used to obtain the transmission frequency required for design by multiplying it by the target reception frequency.

[0173] In addition, the electronic device (1400) may be provided at a location where the tire radio frequency constant is minimized, and a main chip (1430) and related circuits may be designed to obtain a set transmission frequency at this location.

[0174] 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 (1400) can be designed so that the transmission frequency becomes 1,776 MHz, which is the product of 1.69 and 1,052.

[0175] The reception frequency band of the tire electronic device (1400) is set to 860 to 800 MHz, and the optimal frequency can be set to 894 MHz, but is not limited thereto.

[0176] Meanwhile, the transmission frequency may be designed to be 1.05 times or more or 0.95 times or less than the target reception frequency.

[0177] The above electronic device (1400) may be provided in any one of the following ways: attachment, adhesion, insertion, or integration into the interior of the tire (1000).

[0178] Additionally, sound-absorbing material (1600) may be further provided on the inner side of the tread.

[0179] If such sound-absorbing material (1600) is additionally provided, the permittivity is 3 to 4 times higher than that of a general tire, so the tire radio frequency constant may be calculated by taking this into further consideration.

[0180]

[0181] Referring to FIG. 15, a method for manufacturing a tire including an electronic device may include a step (S100) in which a tire radio frequency constant (TRFC) inside the tire is calculated, a step (S200) in which a mounting position inside the tire at which the tire radio frequency constant is minimized is derived, a step (S300) in which an electronic device is designed by applying the tire radio frequency constant at the mounting position, and a step (S400) in which the designed electronic device is installed at the mounting position.

[0182] In the step (S100) where the tire radio frequency constant (TRFC) inside the tire is calculated, the tire radio frequency constant is a constant calculated by objects having a permittivity located between the electronic device (1400) and the receiving device (1500) when the electronic device (1400) and the receiving device (1500) are connected in a straight line.

[0183] These tire radio frequency constants may include variables such as sidewall compound, sidewall thickness, carcass cord material, carcass cord compound, carcass cord thickness, number of carcass cord layers, bead filler compound, bead filler thickness, rim cushion compound, rim cushion thickness, inner liner compound, and inner liner thickness.

[0184] And, in the step (S100) where the tire radio frequency constant (TRFC) inside the tire is calculated, the tire radio frequency constant may include, as variables, 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.

[0185] Next, in the step (S200) of deriving a mounting position where the tire radio frequency constant is minimized inside the tire, the mounting position where the tire radio frequency constant is minimized can be derived between the first point (1100) and the third point (1300).

[0186] More specifically, when the mounting position is defined as a first point (1100) where the bead wire and the bead wire rubber meet, a second point (1200) where the end of the bead filler is defined, and a third point (1300) where the end of the carcass and the belt is defined, when the mounting position is located between the first point (1100) and the second point (1200), the point where the tire radio frequency constant is minimum among points that are 10 to 80% of the length from the first point (1100) to the second point (1200) may be derived, and when the mounting position is located between the second point (1200) and the third point (1300), the point where the tire radio frequency constant is minimum among points that are 15 to 95% of the length from the second point (1200) to the third point (1300) may be derived.

[0187] Next, in the step (S300) where the electronic device is designed by applying the tire radio frequency constant at the mounting position, an electronic device (1400) that transmits a transmission frequency that causes the receiver to have the target reception frequency may be designed. To this end, the transmission frequency may be designed to be derived by multiplying the tire radio frequency constant at the mounting position, which is the position where the tire radio frequency constant is the minimum, by the target reception frequency.

[0188] Next, in the step (S400) where the designed electronic device is installed at the mounting location, the electronic device (1400) may be formed and integrated into a state located inside the tire (1000) or may be installed to be attached to the inside of the tire (1000).

[0189] Specifically, the electronic device (1400) may be formed by being topped with a rubber patch of the same material as the inner liner and mounted inside the tire (1000) so as to be integrated with the tire (1000). However, the electronic device (1400) may also be attached alone to the inside of the tire (1000) without a rubber topping.

[0190]

[0191] 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.

[0192] 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.

[0193]

[0194] <Explanation of symbols>

[0195] 100: Tire

[0196] 110: Tread

[0197] 120: Sidewall

[0198] 130: Beadbu

[0199] 140: Inner liner

[0200] 200: Tire internal installation device

[0201] 210: Sensor module

[0202] 211: Temperature sensor

[0203] 212: Acceleration sensor

[0204] 213: Gyro sensor

[0205] 214: Pressure sensor

[0206] 220: Transmitter module

[0207] 230: Power supply

[0208] 240: Wireless charging module

[0209] 300: Receiver

[0210] 1000: Tires containing electronic devices

[0211] 1100: First point

[0212] 1200: Second point

[0213] 1300: Third point

[0214] 1400: Electronic devices

[0215] 1410: Sensor

[0216] 1420: Memory

[0217] 1430: Main chip

[0218] 1440: Antenna

[0219] 1450: Power

[0220] 1500: Receiver (reader)

[0221] 1600: Sound absorbing material

Claims

1. Electronic device installed inside the tire; and Includes a receiving device provided on the outside of the above tire, The electronic device includes a sensor module for collecting tire information and a transmission module for transmitting information collected from the sensor module. The transmission frequency of the above-mentioned transmission module is designed so that the reception frequency of the above-mentioned reception device becomes the target reception frequency, A tire including an electronic device characterized in that the transmission frequency is designed to be greater than the target reception frequency.

2. In paragraph 1, The above transmission frequency is, A tire including an electronic device, characterized in that it is designed by applying a tire radio frequency constant (TRFC) derived by taking as variables one or more combinations of the dielectric constant, compound composition, thickness, and number of overlaps of structures located in a straight line between the electronic device and the receiving device.

3. In paragraph 2, The above tire radio frequency constant (TRFC) is A tire including an electronic device characterized in that it includes at least one of 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 as variables.

4. In paragraph 2, The above tire radio frequency constant (TRFC) is A tire comprising an electronic device characterized by including a correction factor of an object surrounding the sensor and a sensor correction factor derived therefrom.

5. In paragraph 2, The above transmission frequency is, A tire including an electronic device characterized in that it is designed as a value obtained by multiplying the target reception frequency and the derived tire radio frequency constant.

6. In paragraph 1, A tire including an electronic device, characterized in that the transmission frequency of the above-mentioned transmission module is set 1.2 to 2 times higher than the reception frequency measured by the above-mentioned reception unit.

7. In paragraph 1, The above electronic device is installed on the inner side corresponding to the tread portion of the tire, A tire including an electronic device characterized in that the receiving device is formed so that the tire can run upward on the ground on which the tire runs.

8. In paragraph 1, A tire including an electronic device, characterized in that the electronic device is installed on the inner side corresponding to the sidewall portions on both sides of the tire.

9. In either of paragraphs 7 or 8, A tire including an electronic device, characterized in that the range in which a signal transmitted from the transmission module of the electronic device is recognized by the receiving device is 1 mm to 1500 mm.

10. In paragraph 8, A tire including an electronic device, characterized in that the electronic device is installed in the sidewall portion between the end of the second belt (b) and the end of the bead wire (a) at a distance of 40 mm.

11. In paragraph 1, A tire including an electronic device, characterized in that the sensor module of the electronic device comprises at least one selected from a temperature sensor for measuring the temperature inside the tire, an acceleration sensor for measuring the acceleration movement of the tire, a gyro sensor for detecting the angular velocity of the tire, and a pressure sensor for measuring the pressure inside the tire.

12. In paragraph 11, A tire including an electronic device, characterized in that the electronic device includes a power supply unit therein.

13. In paragraph 11, A tire including an electronic device, characterized in that the electronic device includes a wireless charging module capable of charging power from an external magnetic field.

14. In paragraph 1, The above electronic device has a first point where the bead wire and the bead wire rubber meet, a second point which is the end of the bead filler, and a third point which is the end of the carcass and the belt. The electronic device is arranged to be located between the first point and the second point or between the second point and the third point, A tire including an electronic device, characterized in that the transmission frequency is designed using the tire radio frequency constant as a variable.

15. In paragraph 14, The above electronic device, When located between the first point and the second point, A tire including an electronic device, characterized in that it is located at a point that is 10 to 80% of the length from the first point to the second point.

16. In paragraph 14, The above electronic device, When located between the second point and the third point, A tire including an electronic device, characterized in that it is located at a point that is 15 to 95% of the length from the second point to the third point.

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