CN117191619A - Tire wear detection device and detection method thereof - Google Patents

Abstract

The invention provides a tire wear detection device and a method thereof, and a tire comprising the tire wear detection device. The tire wear detection device comprises a conductive block, a current detection sensor and a power supply, wherein the conductive block is embedded in a wear area of the surface of a tire, the embedding thickness of the conductive block is larger than the allowable wear thickness of the surface of the tire, the power supply is connected with the conductive block to supply power to the conductive block, the current detection sensor is used for detecting the conduction current of the conductive block, and the conduction current is used for indicating the wear degree of the tire.

Description

Tire wear detection device and detection method thereof

Technical Field

The invention relates to the field of vehicle detection, in particular to a tire wear detection device and a detection method thereof.

Background

With the popularization of automobiles, automobile driving safety is more and more paid attention to, and tires are used as components which are directly contacted with the ground on the automobiles, and impact on the automobiles during driving is relieved together with automobile suspensions, so that riding comfort and driving smoothness of the automobiles are affected, the weight of the automobiles is born, and the use of the tires is very important for driving safety, so that in daily use, people need to frequently observe the use condition and wearing condition of the tires. After the tire is worn to a certain extent after long-time use, the strength and the grip of the tire are reduced, so that the safety, the braking distance, the operability and the like of the vehicle are affected. Therefore, a tire manufacturer will place a small trapezoid protrusion in the longitudinal groove on the upper surface of the tire, which is called "tire wear indicator". As shown in FIG. 1, the mark is designed mainly for reminding the car owner of the tire wear degree, and the thickness of the mark is 1.6mm. Once the raised surface wear is below this mark from the bottom of the groove, it indicates that the tire should be replaced.

However, in the current daily use, some users do not check the tire wear condition frequently, and the judgment of the tire wear condition according to different personal experiences can also be different, so that the replacement time of the tire is neglected. Therefore, especially when running at high speed, traffic accidents such as tire burst, vehicle out of control and the like caused by continuous use of tire which is not replaced in time after the tire wear reaches the mark often occur.

In order to solve the above problems, the present invention aims to provide a tire wear detection device and a detection method thereof, so as to realize real-time detection of the degree of tire wear, and display and early warning.

Disclosure of Invention

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

According to an aspect of the present invention, there is provided a tire wear detection apparatus including a conductive block embedded in a wear area of a tire surface, the conductive block having an embedding thickness greater than an allowable wear thickness of the tire surface, a current detection sensor connected to the conductive block to supply power to the conductive block, and a power supply for detecting an on current of the conductive block, the on current being used to indicate a degree of wear of the tire.

In one embodiment, the current detection sensor and the power supply are disposed on the inner surface, and the conductive block is connected to the power supply through a copper wire, an alloy wire or a conductive fiber.

In one embodiment, the copper wire, alloy wire or conductive fiber is arranged along an arrangement direction of the cord or the wire of the tire.

In one embodiment, the current detection sensor and the power source are co-integrated with the conductive block embedded within a worn area of the tire surface.

In one embodiment, the tire wear detection device further comprises a signal transmitting module connected with the current detection sensor and used for acquiring the current detected by the current detection sensor and sending the current to the controller of the tire, so that the controller can conveniently determine the wear degree of the tire.

According to another aspect of the present invention, there is also provided a tire on which a plurality of the tire wear detecting devices according to any one of the foregoing embodiments are arranged.

According to still another aspect of the present invention, there is also provided a tire wear detection method characterized in that the tire surface is provided with a plurality of the tire wear detection apparatuses according to any of the foregoing embodiments, the tire wear detection method including: acquiring the on-current detected by the current detection sensors of the tire wear detection devices; and determining a degree of wear of the tire surface at the installation position of the tire wear detection apparatus based on the on-current.

In an embodiment, the determining the degree of wear of the tire surface at the installation position of the tire wear detection apparatus based on the on-current includes: calculating the actual resistance of the conductive block of the corresponding tire wear detection device based on the on-current; and determining the abrasion degree of the conductive block based on the actual resistance, wherein the abrasion degree of the conductive block indicates the abrasion degree of the tire surface where the conductive block is located.

In an embodiment, the determining the degree of wear of the tire surface at the installation position of the tire wear detection apparatus based on the on-current includes: a difference in the conduction current relative to a standard current is calculated, the magnitude of the difference being indicative of the magnitude of the degree of wear of the tire surface at the installation location of the tire wear detection apparatus.

In one embodiment, the tire wear monitoring method further comprises: in response to the degree of wear of the tire surface at the mounting location of any of the tire wear detection devices exceeding the maximum amount of wear, an alarm signal is generated to alert a user to replace the tire.

According to still another aspect of the present invention, there is also provided a computer storage medium having a computer program stored thereon, characterized in that the computer program, when executed, implements the steps of the tire wear detection method according to any of the foregoing embodiments.

Drawings

The above features and advantages of the present invention will be better understood after reading the detailed description of embodiments of the present disclosure in conjunction with the following drawings.

FIG. 1 is a partial schematic view of a tire wear indicator for a tire product according to the prior art;

FIG. 2 is a schematic view of the installation and modules of a tire wear detection apparatus in an embodiment in accordance with an aspect of the invention;

FIG. 3 is a schematic view of the mounting location of a tire in an embodiment according to another aspect of the present invention;

FIG. 4 is a flow chart of a tire wear detection method according to another aspect of the present invention;

fig. 5 is a partial flow chart of a tire wear detection method according to another embodiment of the invention.

Detailed Description

The following description is presented to enable one skilled in the art to make and use the invention and to incorporate it into the context of a particular application. Various modifications, as well as various uses in different applications will be readily apparent to persons skilled in the art, and the generic principles defined herein may be applied to a wide range of embodiments. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

In the following detailed description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without limitation to these specific details. In other instances, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring the present invention.

The reader is directed to all documents and documents filed concurrently with this specification and open to public inspection with this specification, and the contents of all such documents and documents are incorporated herein by reference. All the features disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic set of equivalent or similar features.

Note that where used, the designations left, right, front, back, top, bottom, forward, reverse, clockwise, and counterclockwise are used for convenience only and do not imply any particular orientation of securement. In fact, they are used to reflect the relative position and/or orientation between the various parts of the object. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Note that, where used, further, preferably, further and more preferably, the brief description of another embodiment is made on the basis of the foregoing embodiment, and further, preferably, further or more preferably, the combination of the contents of the rear band with the foregoing embodiment is made as a complete construction of another embodiment. A further embodiment is composed of several further, preferably, still further or preferably arrangements of the strips after the same embodiment, which may be combined arbitrarily.

The invention is described in detail below with reference to the drawings and the specific embodiments. It is noted that the aspects described below in connection with the drawings and the specific embodiments are merely exemplary and should not be construed as limiting the scope of the invention in any way.

According to an aspect of the present invention, there is provided a tire wear detection apparatus for detecting a degree of wear of a tire surface in real time.

In one embodiment, as shown in FIG. 2, a tire wear detection apparatus 200 includes a conductive block 201, a current detection sensor, and a power source 202 (collectively shown).

The conductive blocks 201 are embedded in the worn area of the surface of the tire 3, the embedded thickness of the conductive blocks 201 being greater than the allowable worn thickness of the surface of the tire 3.

The tire 3 has a limit on the allowable degree of wear depending on factors such as the structural design and material of the tire and the need for safety of the vehicle. I.e. when the wear level of the tyre 3 is less than the allowable wear level, it is generally considered that it can continue to be used and meets the safety regulations of the vehicle. The allowable wear thickness of the corresponding tire 3 surface, i.e. the thickness value at which the tire 3 surface is worn when the maximum allowable wear level is reached, can be determined from the allowable wear level of the tire 3.

It will be appreciated that the embedded thickness of the conductive block 201 is at least greater than the allowable wear thickness of the surface of the tyre 3, so that the conductive block 201 can wear out simultaneously with the surface of the tyre 3. Preferably, the conducting block is required to have wear resistance equal to that of the tyre surface, i.e. the conducting block 201 can realize synchronous wear effect, and the wear degree of the conducting block can represent the wear degree of the tyre 3 surface.

The current detection sensor and the power supply 202 detect the degree of wear of the conductive block 201 on the premise that the conductive block 201 is synchronized with the wear of the surface of the tire 3.

Wherein a power source is connected to the conductive block 201 to supply power to the conductive block 201.

The current detection sensor is used for detecting the conduction current of the conductive block 201, and the conduction current can indicate the abrasion degree of the tire 3. Preferably, to facilitate the determination of the degree of wear of the conductive blocks by conducting the current, the conductive blocks 201 are embedded in the surface of the tyre 3 in a direction perpendicular to the outer surface of the tyre.

Preferably, in a specific embodiment, in order not to affect the original structure of the tire, the current detection sensor and the power supply 202 may be disposed on the inner surface of the tire 3 (as shown in fig. 2), and the connecting wires used for the power supply and the conductive block 201 may be made of the same material as the cord or steel wire of the tire 3, such as copper wires, alloy wires, or conductive fibers.

Preferably, the connecting wires, when laid out, may be laid out along the direction of laying of the cords or wires of the tire 3, i.e. the connecting wires themselves may act as cords or wires of the tire 3.

Alternatively, in another embodiment, when the integration degree of the current detection sensor and the power supply 202 is high, that is, the current detection sensor and the power supply 202 are sufficiently small, it may be integrated with the conductive block 201 while being embedded in the wearing layer of the surface of the tire 3.

Preferably, the tire wear detection apparatus 200 may further include a signal emitting module (not shown or integrated with the current detection sensor and the power supply in fig. 2). The signal transmitting module is connected with the current detection sensor and is used for acquiring the current detected by the current detection sensor and sending the current to the controller of the tire 3 so that the controller can determine the abrasion degree of the tire 3.

The controller of the tire 3 may be a dedicated controller configured for the tire, or may be another controller that is already provided in the vehicle and that can realize monitoring of the tire 3, such as a whole vehicle controller.

According to another aspect of the present invention, there is also provided a tire. As shown in fig. 3, a plurality of the tire wear detection devices 200 in any of the foregoing embodiments are provided on the surface of the tire, each of the tire wear detection devices 200 being configured to detect the degree of wear of the tire surface at the installation position thereof.

Preferably, a plurality of tire wear detecting devices 200 may be uniformly distributed on the center axis of the tire surface.

According to still another aspect of the present invention, there is also provided a tire wear detection method for determining the degree of wear of the tire 3 from the on-current of the conductive block 201 detected by the tire wear detection device 200 in any of the foregoing embodiments.

In one embodiment, as shown in FIG. 4, the tire wear detection method may include steps S410-S420.

Step S410 is: and acquiring the on currents detected by the current detection sensors of the plurality of tire wear detection devices.

The "acquisition" includes requesting or receiving the on-current detected by the current detection sensor of the tire wear detection apparatus by wireless or wired communication means or the like. For example, the signal transmitting module in one of the foregoing embodiments may be used to receive the on-current detected by the current detecting sensor.

Step S420 is: the degree of wear of the tire surface at the installation position of each tire wear detecting device is determined based on the on-current.

It will be appreciated that the degree of wear may be different at different locations on the surface of the tyre due to the different coefficients of friction of the road surfaces, and that a plurality of tyre wear detection means may be provided on the surface of the tyre to detect the degree of wear at the respective mounting locations.

Specifically, wear of the conductive bump 201 may result in a decrease in the volume of the conductive bump 201, which in turn may result in an increase in the resistance of the conductive bump. According to the current formula: i (current) =u (voltage)/R (resistance), the increase of the resistance of the conductive block 201 causes the on current to be reduced, so that the resistance change value can be reversely deduced according to the change amount of the current, and the wear amount of the conductive block, that is, the wear amount of the tire surface can be measured.

In one embodiment, as shown in FIG. 5, step S420 may include steps S421-S422.

Step S421 is: the actual resistance of the conductive block of the corresponding tire wear detection apparatus is calculated based on the on-current.

The actual resistance of the conductive block can be calculated according to a resistance calculation formula R (resistance) =u (voltage)/I (current) of the conductive block, where U is the voltage of the power supply of the tire wear detection device, and I is the current value detected by the current detection sensor of the tire wear detection device.

Step S422 is: the degree of wear of the conductive block is determined based on the actual resistance, the degree of wear of the conductive block indicating the degree of wear of the tire surface where the conductive block is located.

According to the corresponding relation between the volume of the conductive block and the resistance, the corresponding actual volume of the conductive block can be determined according to the resistance of the conductive block, and the part of the actual volume, which is reduced relative to the original volume, is the abrasion loss of the conductive block. The amount of wear may correspond to the degree of wear of the tire surface.

Preferably, when the central axis of the conductive block (the central axis parallel to its long side) is embedded in the tire surface in a direction perpendicular to the tire surface, the wear area of the surface of the conductive block is unchanged, and the wear distance on the central axis thereof can be directly related to the resistance or on-current of the conductive block. The abrasion distance on the center axis of the conductive block is equivalent to the abrasion distance of the tire surface, so that the abrasion degree of the tire surface can be directly determined according to the actual resistance of the conductive block.

Alternatively, step S420 may be directly embodied as: a difference in the conduction current with respect to the standard current is calculated, the magnitude of the difference indicating the magnitude of the degree of wear of the tire surface at the installation position of the tire wear detecting device.

It is understood that the on-current detected by the current detection sensor in the tire wear detection apparatus is a standard current when the conductive block has not been worn. The standard current is directly related to the original resistance of the conductive block, and the conductive current detected in real time by the current detection sensor is directly related to the current resistance of the conductive block, so that the difference value of the conductive current detected in real time by the current detection sensor relative to the standard current can indicate the abrasion degree of the tire surface at the installation position of the tire abrasion detection device.

Preferably, as shown in fig. 4, the tire wear detection method may further include step S430: in response to the degree of wear of the tire surface at the mounting location of any of the tire wear detection devices exceeding the maximum amount of wear, an alarm signal is generated to alert the user to tire replacement.

The maximum wear is the wear corresponding to the allowable wear degree of the tire surface. It will be appreciated that in embodiments where the resistance of the conductive block is utilized to determine the amount of tire wear, the maximum amount of wear may be set to a corresponding resistance warning value; in embodiments where the current is utilized to determine the amount of tire wear, the maximum amount of wear may be set to a corresponding current warning value.

The alarm signal may be a reminder in the form of a light, sound and/or a chart.

While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood and appreciated by those skilled in the art.

Preferably, the controller in the aforementioned tire wear detection apparatus is configured to implement the tire wear detection method steps in any of the aforementioned embodiments.

According to still another aspect of the present invention, there is also provided a computer storage medium having stored thereon a computer program which, when executed, implements the steps of the tire wear detection method according to any of the foregoing embodiments.

Those of skill in the art would understand that information, signals, and data may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The various illustrative logical modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.

In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk (disk) and disc (disk) as used herein include Compact Disc (CD), laser disc, optical disc, digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks (disk) usually reproduce data magnetically, while discs (disk) reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. It is to be understood that the scope of the invention is to be controlled by the appended claims and not limited to the specific constructions and components of the above-described embodiments. Various changes and modifications to the embodiments may be made by those skilled in the art within the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the invention.

Claims (11)

1. The utility model provides a tire wear detection device, includes conducting block, electric current detection sensor and power, the conducting block embedding is in the wearing and tearing region of tire surface, the embedding thickness of conducting block is greater than the allowable wearing and tearing thickness of tire surface, the power with the conducting block is connected in order to supply power to the conducting block, electric current detection sensor is used for detecting the conduction current of conducting block, the conduction current is used for instructing the degree of wear of tire.

2. The tire wear detection apparatus of claim 1, wherein said current detection sensor and said power source are disposed on said inner surface, and said conductive block is connected to said power source by a copper wire, an alloy wire, or a conductive fiber.

3. A tire wear detecting device according to claim 2, wherein said copper wire, alloy wire or conductive fiber is arranged along an arrangement direction of a cord or a wire of said tire.

4. The tire wear detection apparatus of claim 1, wherein said current detection sensor and said power supply are co-integrally embedded with said conductive block within a worn area of said tire surface.

5. The tire wear detection apparatus of claim 1, further comprising a signal transmission module coupled to the current detection sensor for acquiring the current detected by the current detection sensor and transmitting to a controller of the tire for the controller to determine the degree of wear of the tire.

6. Tyre, characterized in that it has arranged thereon a number of tyre wear detection devices according to any one of claims 1 to 5.

7. A tire wear detection method, characterized in that the tire surface is provided with a plurality of the tire wear detection apparatuses according to any one of claims 1 to 5, the tire wear detection method comprising:

acquiring the on-current detected by the current detection sensors of the tire wear detection devices; and

determining a degree of wear of the tire surface at the installation position of the tire wear detection apparatus based on the on-current.

8. The tire wear detection method according to claim 7, wherein the determining the degree of wear of the tire surface at the installation position of the tire wear detection apparatus based on the on-current includes:

calculating the actual resistance of the conductive block of the corresponding tire wear detection device based on the on-current; and

and determining the abrasion degree of the conductive block based on the actual resistance, wherein the abrasion degree of the conductive block indicates the abrasion degree of the tire surface where the conductive block is positioned.

9. The tire wear detection method according to claim 7, wherein the determining the degree of wear of the tire surface at the installation position of the tire wear detection apparatus based on the on-current includes:

a difference in the conduction current relative to a standard current is calculated, the magnitude of the difference being indicative of the magnitude of the degree of wear of the tire surface at the installation location of the tire wear detection apparatus.

10. The tire wear detection method according to any one of claims 7 to 9, wherein the tire wear detection method further comprises:

in response to the degree of wear of the tire surface at the mounting location of any of the tire wear detection devices exceeding the maximum amount of wear, an alarm signal is generated to alert a user to replace the tire.

11. A computer storage medium having stored thereon a computer program, wherein the computer program when executed performs the steps of the tire wear detection method according to any one of claims 7 to 10.