Method and system for indicating wear of tyre in a vehicle and a tyre therof

US 9 862 238 B2

A tire of a vehicle is disclosed having at least one sensor, a control module and one or more indicators. The at least one sensor is located at a re-threading level of the tire to sense contact with ground surface. Upon contact with the ground surface, the at least one sensor generates data. The control module receives the data from the at least one sensor. Upon receiving the data, the control module determines a predefined condition. The control module transmits the data to a dashboard upon determining the predefined condition. The transmitted data is displayed on the dashboard which is communicatively connected to the control module for indicating wearing of the tire. In an embodiment, the dashboard provides signal relating to the displayed data. The one or more indicators is communicatively connected to the dashboard to receive signal relating to the data for indicating wearing of the tire.

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Claims

1. A method for indicating wear of a tyre in a vehicle, said method comprising steps of:
sensing contact of at least one sensor with ground surface by the at least one sensor located at a re-threading level of the tyre, wherein data is generated by the at least one sensor upon contact with a ground surface;
receiving the data from the at least one sensor by a control module through one or more connectors, wherein a predefined condition is determined by the control module, upon receiving the data, wherein the predefined condition includes, evaluation of whether the data is received for a predetermined amount of distance with respect to a current meter usage distance, retrieved from a dashboard of the vehicle;
transmitting, by the control module, the data to the dashboard of the vehicle and a display unit on the tyre upon determining the predefined condition, wherein the data is displayed on the dashboard which is communicatively connected to the control module for indicating wear of the tyre; and
transmitting, by the dashboard, a signal relating to the displayed data to one or more indicators configured on the tyre for indicating wear of the tyre, wherein the one or more indicators are communicatively connected to the dashboard of the vehicle.

Show 6 dependent claims

Description

The present application claims priority to Indian patent application serial number 1620/CHE/2013 filed on Apr. 9, 2013, the entire contents of which are incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to a wearing of tyres of a vehicle. An embodiment of the instant disclosure discloses methods and system for indicating wearing of tyre in the vehicle.

BACKGROUND OF THE DISCLOSURE

A tyre (also spelled as tire) is a ring-shaped covering which fits around a rim of a wheel of a vehicle. The tyre protects the wheel and enables better vehicle performance. Also, tyres provide traction between the vehicle and the road surface along with providing a flexible cushion which absorbs shock. Modern pneumatic tyres are made up of synthetic rubber, natural rubber, fabric and wire, along with carbon black and other chemical compounds. Usually, the tyres consist of a thread and a body. The thread is the part of the tyre which comes in contact with the road surface. Also, the thread provides grip with the road surface. Generally, the tyre with a thick rubber or rubber/composite compound formulated provides an appropriate level of traction and does not wear away too quickly. However, the tyres gradually wear down over the course of continuous usage. Also, the tyres wear down due to aggressive driving, or steering and alignment problems. Usually, the threads of tyres are gradually worn out since the threads are in contact with road surface. The wearing of threads of the tyres result in baldness of tyre and hence the tyre is termed as bald tyre.

Bald tyres are dangerous because limited thread reduces traction for the vehicle, which can be very dangerous in wet or icy driving conditions. Further, bald tyres results in tyre blowouts. Baldness of tyres results in fatal consequences leading to injury and casualty for both the driver or rider and living beings in the vicinity of the vehicle since baldness results in slithering of the vehicle. Ideally, tyres are required to be replaced before the tyre is truly bald. The driver is required to check the tyres often to ensure that the tyre thread depth is safe. Usually, tyres are usable until the tyre thread depth reaches 1/16 of an inch (0.15 centimeters). Such depth of the tyre is termed as the re-threading level of the tyre.

In conventional systems, penny test is a common method to assess tyre safety i.e. to check the depth of the threads. Penny test is a manual method, where a coin is inserted between the threads of the tyre. If the coin doesn't go enough inside the threads, then the tyre has to be replaced. However, penny test is not a reliable method for testing the tyre life since each time the driver needs to place the coin to check the thread depth which is a manual method. Conventionally, a number of wear indicators are embedded at a predetermined location of the threads. Upon wearing of the tyre, the wear indicators become visible. The indicators provide an indication for tyre replacement upon wearing of the tyre.

U.S. Pat. No. 5,303,756 discloses a visually distinctive material embedded in the tyre that gets exposed when threads wear down. Further, U.S. Pat. No. 4,226,274 provides for a wear indicator which is in the form of a letter K. The indicator is embedded in the thread provides a quantitative measure of the amount of thread remaining from being worn out. Additionally, the wear indicator provides visual signals when the tyre is worn out. However, the conventional methods do not provide indication to the driver on wearing of the tyre before wearing of the tyre takes place.

In one conventional method, the wear of tyre is detected based on number of rotations of the tyre. Particularly, upon reaching a desired number of rotations of the tyre, the wear of tyre is indicated. However, such a way of indication involves huge processing power and time where the number of rotations needs to be calculated at regular intervals of time.

In one conventional method, tyres i.e. sidewalls are illuminated using optical fibres to indicate visibility of the moving vehicle on roads. However, such a way of illumination does not imply the wear of tyre.

Hence, there is a need for a method for detecting and indicating the baldness of the tyre when rethreading level is reached.

SUMMARY

The shortcomings of the prior art are overcome through the provision of a method, an apparatus and a system as described in the description.

The present disclosure discloses a method for indicating wearing of tyre in a vehicle. The method comprises sensing contact of at least one sensor with ground surface by the at least one sensor which is located at a re-threading level of the tyre. The at least one sensor generates data upon contact with the ground surface. The data generated by the at least one sensor is received by a control module through one or more connectors. Upon receiving the data from the at least one sensor, the control module determines a predefined condition. The control module is configured on the tyre. Upon determining the predefined condition, the control module transmits the data to a dashboard of the vehicle which is communicatively connected to the control module. The data is displayed on the dashboard for indicating wear of the tyre. Then, signal relating to the displayed data is transmitted by the dashboard to one or more indicators for indicating wear of the tyre. The one or more indicators are communicatively connected to the dashboard. In an embodiment, the method includes display the data on a display unit configured on the tyre indicating wear of the tyre where the data is received from the control module.

The present disclosure discloses a system for indicating wearing of tyre in a vehicle. The system comprises at least one sensor, a control module, a dashboard and one or more indicators. The at least one sensor is located at a rethreading level of the tyre. The at least one sensor is used to sense contact of the at least one sensor with ground surface. The at least one sensor generates data upon contact with the ground surface. The control module is configured on the tyre. The control module receives the data from the at least one sensor through one or more connectors. Upon receiving the data, the control module determines a predefined condition and transmits the data upon determining the predefined condition. The dashboard is communicatively connected to the control module to receive the data. The data received from the control module is displayed on the dashboard for indicating wear of tyre. The one or more indicators are configured on the tyre and are communicatively connected to the dashboard. The one or more indicators receives signal relating to the displayed data from the dashboard for indicating wear of the tyre. In an embodiment, the system includes a display unit configured on the tyre to display the data indicating wear of the tyre where the data is received from the control module.

A tyre of a vehicle is disclosed in the present disclosure. The tyre comprises at least one sensor, a control module and one or more indicators. The at least one sensor is located at a re-threading level of the tyre to sense contact with ground surface. Upon contact with the ground surface, the at least one sensor generates data. The control module receives the data from the at least one sensor through one or more connectors. Upon receiving the data, the control module determines a predefined condition. The control module transmits the data to a dashboard upon determining the predefined condition. The transmitted data is displayed on the dashboard which is communicatively connected to the control module for indicating wear of the tyre. In an embodiment, the dashboard provides signal relating to the displayed data. The one or more indicators is communicatively connected to the dashboard to receive signal relating to the data for indicating wear of the tyre. In an embodiment, the tyre includes a display unit to display the data indicating wear of the tyre where the data is received from the control module.

The present disclosure discloses a method for indicating wearing of tyre in a vehicle. The method comprises sensing contact of at least one sensor with ground surface by the at least one sensor located at a re-threading level of the tyre. The at least one sensor generates data is upon contact with the ground surface. The data generated is received by a control module through one or more connectors. The received data is stored in a storage unit of the control module. The control module transmits signal relating to the received data to one or more indicators configured on the tyre for indicating wear of the tyre. In an embodiment, the method includes display the data on a display unit configured on the tyre indicating wear of the tyre where the data is received from the control module.

A tyre of a vehicle is disclosed in the present disclosure. The tyre comprises at least one sensor, a control module and one or more indicators. The at least one sensor is located at a re-threading level of the tyre to sense contact with ground surface. The at least one sensor generates data upon contact with the ground surface. The control module receives the data from the at least one sensor through one or more connectors. The received data is stored in a storage unit of the control module. The one or more indicators receives signal relating to the data from the control module for indicating wear of the tyre. In an embodiment, the tyre includes a display unit to display the data indicating wear of the tyre where the data is received from the control module.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The features of the present disclosure are set forth with particularity in the appended claims. The disclosure itself, together with further features and attended advantages, will become apparent from consideration of the following detailed description, taken in conjunction with the accompanying drawings. One or more embodiments of the present disclosure are now described, by way of example only, with reference to the accompanied drawings wherein like reference numerals represent like elements and in which:

FIG. 1A illustrates a schematic view of a system for indicating wear of tyre in a vehicle in accordance with an embodiment of the present disclosure;

FIG. 1B illustrates a block diagram of an exemplary system for indicating wear of tyre in a vehicle in accordance with an embodiment of the present disclosure;

FIG. 1C illustrates solar power strips embedded on a tyre to provide power to a control module in accordance with an embodiment of the present disclosure;

FIG. 2 shows an exemplary dashboard indicating wear of tyre in accordance with an embodiment of the present disclosure;

FIG. 3 shows an exemplary display unit indicating wear of tyre in accordance with an embodiment of the present disclosure;

FIG. 4A illustrates a schematic view of a system for indicating wear of tyre in one or more indicators and a display unit of the tyre in accordance with an embodiment of the present disclosure;

FIG. 4B illustrates a block diagram of a system for indicating wear of tyre in one or more indicators and a display unit of the tyre in accordance with an embodiment of the present disclosure;

FIG. 5 shows a flowchart illustrating a method for indicating wear of tyre on a dashboard and one or more indicators in accordance with an embodiment of the present disclosure; and

FIG. 6 shows a flowchart illustrating a method for indicating wear of tyre in one or more indicators in accordance with an embodiment of the present disclosure.

The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION

The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the claims of the disclosure. It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.

The present disclosure discloses method, system and tyre thereof for indicating wear of tyre in a vehicle. The method and system includes sensors, connectors, a control module, indicators, a display unit in the tyre and a dashboard at driver's place. The sensors are placed at a predetermined level of threads of the tyre. The sensors generates data when comes in contact with ground surface. The data generated is transmitted to the control module. The control module determines a predefined condition which includes whether data is continuously received for predetermined amount of distance. If the predefined condition is determined, then the control module transmits the data to the dashboard which displays the data for indicating the wear of the tyre. The dashboard in turn transmits signal relating to the displayed data to the indicators to indicate the wear of the tyre. In an embodiment, the control module transmits the data directly to the indicators and the display unit respectively, to indicate the wear of the tyre.

FIG. 1A illustrates a schematic view of a system for indicating wear of tyre 100 in a vehicle in accordance with an embodiment of the present disclosure. The system comprises a tyre 100 and a dashboard 104 of the vehicle. The tyre 100 consists of threads referred by numeral 100a. Usually, wear out of the tyre 100 is determined when a wear out of threads have reached below a cut off level called as rethreading level referred to as 100b. For example, considering the depth of the threads is 50 millimeter (mm) and a rethreading level defined to be 5 mm of the thread depth. If the tyre threads wear out to 5 mm then wear out condition of the tyre is determined. The tyre 100 comprises at least one sensor 101, one or more connectors 102, a control module 103 and one or more indicators 105. The at least one sensor 101 is located at the rethreading level 100b. In an embodiment, the at least one sensor is located at a predefined location, for example, 2 mm to 3 mm above the rethreading level 100b. The at least one sensor 101 is used to sense contact with ground surface which is resulted when the wear out of tyre 100 is near to the rethreading level 100b. The at least one sensor 101 generates data upon contact with the ground surface. The at least one sensor 101 includes, but does not limit to, touch sensor filament or a thin sensor filament, highly thin metal sheets, highly thin optical fibre sensor and light emitting indicators. The touch sensor filament is made of silicon or plastic with thickness in the range from 1 mm to 4 mm. In an embodiment, the touch sensor filament has the thickness between 1.8 mm and 2.8 mm. The highly thin metal sheets generate friction when comes in contact with road surface and which produces signals thereby. The highly thin metal sheets have thickness between 0.05 mm and 1.5 mm. In an embodiment, the thickness of the metal sheets has thickness between 0.1 mm and 0.9 mm. The highly thin optical fibre sensor has the thin coating which is rubbed off upon contact with the road surface. The thickness of the optical fibre sensor is in the range of 0.05 mm to 2 mm. In an embodiment, the thickness of the optical fibre sensor is between 0.1 mm and 0.6 mm. The light emitting indicators is radium coated plastic having thickness between 0.3 mm and 1.0 mm. The light emitting indicators is exposed when the tyre 100 wear out and thereby produces luminescence. The luminescence in turn is captured as signals which are transmitted to the dashboard 104 for indicating wear out of the tyre 100.

In an embodiment, the at least one sensor 101 includes, but does not limit to, pressure sensors, temperature sensors, gyro sensors, force sensors, resistive sensors, capacitive touch sensors. The pressure sensors provide an array of force sensitive cells that measure the pressure distribution between virtually any mating and contacting surface. Particularly, the pressure sensors measures the pressure exerted on the tyre 100. In an embodiment, a cut off pressure is pre-set. When the pressure of the tyre is beyond the cut off pressure then the pressure sensors generate data. The temperature sensors measure temperature of the tyre 100. In an embodiment, a cut off temperature is pre-set. There exists two ways where the temperature reaches the cut off temperature. First way when the when the tyre rubber is heated due to extensive tyre running and second way when the tyre rubber is heated/cooled due to external weather condition. Therefore, when the temperature is beyond the cut off temperature, then the temperature sensors generate data. The gyro sensors measures thread orientation of the tyre 100. Thread orientation is predefined for the tyre 100. Therefore, when the change in orientation or change in alignment is measured by the gyro sensors, data is generated. The force sensors are used for force measurement. The force sensors are ultra-thin and flexible printed circuits which may be integrated into force measurement applications. The force sensors measure a relative change in force or applied load due to contact or touch with the ground surface. In an embodiment, a force threshold is set.

Therefore, when rate of change in force threshold is determined, the data is generated. The capacitive touch sensors transfer energy within an electrical network by means of the capacitance between circuit nodes. The capacitive touch sensors are placed in series with the signal to be coupled. The resistive sensors are versatile and robust which are used for distance and pressure application by using physical contact between two materials to generate a variable resistance.

Citations

US 6,970,074 B2 - Wireless remote vehicle signal indicator for supplementing existing vehicle signal indicators
A remote motor vehicle signal indicator system consists of a transmitter coupled to a vehicle indication signal drive line. The transmitter wirelessly transmits a receiver...

US 2005 280,514 A1 - Apparatus for monitoring and displaying vehicular operational status
An information assembly for monitoring vehicular operational parameters that contributes to dangerous vehicular operation. The driver of the vehicle may also be monitored. The assembly...

US 2007 279,203 A1 - Contactless sensor systems and methods
A tire monitoring system and associated method is disclosed. The tire monitoring system includes a plurality of tire sensor modules, employing contactless sensors, configured to...

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