FORM 2
THE PATENTS ACT, 1970
(39 OF 1970)
AND
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See Section 10; rule 13)
TITLE OF THE INVENTION
TYRE MONITORING SYSTEM FOR MONITORING HEALTH OF A SPARE TYRE OF A VEHICLE
APPLICANT(S)
TATA MOTORS LIMITED
Bombay House, 24 Homi Mody Street,
Hutatma Chowk, Mumbai 400 001,
Maharashtra, India; an Indian Company.
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed.

FIELD OF INVENTION OF THE INVENTION
[0001] The present invention relates to a motor vehicle and, more particularly, to a tyre monitoring system for monitoring health of a spare tyre of a vehicle.
BACKGROUND OF THE INVENTION
[0002] It is critical to overall safety and efficient transportation of passengers that vehicles be equipped with a spare tyre. The spare tyres allow a driver to temporarily replace a tyre that is punctured or otherwise has low air pressure. Generally, such replacements occur while on the road and in a state of emergency. It is important that the driver keep a properly inflated and road-ready spare tyre in the vehicle. Unfortunately, very few people perform the simple process of checking on the readiness of the spare tyre. The process generally would only involve a visual inspection of the tyre and a quick application of a tyre pressure gauge. However, generally, the usability of the spare tyre is not checked until the need for its usage arises. If the spare tyre is found to be non-usable when the need for its usage arises, the purpose of carrying the spare tyre in the vehicle gets defeated. Further, the vehicle may have to be stopped until at least one of the spare tyre and the currently-used tyre is repaired, and brought to a usable condition.
[0003] Hence there remains a need of a monitoring system that monitors health of the spare tyre and provide alarm notifications to the driver.
OBJECT OF THE INVENTION
[0004] The principal object of the embodiments herein is to provide a tyre monitoring system for monitoring health of a spare tyre of a vehicle and provide notifications to a driver of the vehicle.

[0005] Another object of the embodiments herein is to provide a tyre monitoring system for detecting tyre tread.
[0006] Another object of the embodiments herein is to provide a tyre pressure system to monitor a current pressure of the spare tyre and display notification on a dashboard of the vehicle.
[0007] Another object of the embodiments herein is to provide a tyre tread system to monitor wear conditions of the spare tyre and display notification on a dashboard of the vehicle.
[0008] Another object of the embodiments herein is to provide a tyre monitoring system that locate a tyre repair shop and navigate the driver to the tyre repair shop.
SUMMARY OF THE INVENTION
[0009] In one aspect the object is satisfied by providing a tyre monitoring system for monitoring health of a spare tyre of a vehicle. The tyre monitoring system includes a tyre pressure gauge housed in a spare tyre space in the vehicle, a tyre pressure system connected to the tyre pressure gauge, and a controller connected to the tyre pressure system. The tyre pressure system is configured to detect a position of the tyre pressure gauge and send a voltage signal indicative of a current pressure of the spare tyre of the vehicle based on the position of the tyre pressure gauge. The controller is configured to receive the voltage signal indicative of a current pressure of the spare tyre of the vehicle, determine whether the current pressure meets a predefined pressure of the spare tyre, and send a notification comprising the current pressure of the spare tyre to a driver of the vehicle when the current pressure less than a predefined pressure of the spare tyre.
[0010] In an embodiment, the tyre monitoring system includes a vertical link connected to the tyre pressure gauge at the side of the spare tyre space, and a

horizontal link coupled to the vertical link and extends horizontally from a top of the vertical link towards a centre of the spare tyre space. The vertical link rest on a top surface of the spare tyre when the spare tyre is accommodated in the spare tyre space. The horizontal link follow an upward when the pressure of the spare tyre is increased or a downward movement of the top surface of the spare tyre when the pressure of the spare tyre is decreased.
[0011] In an embodiment, when the pressure of the spare tyre is increased, the upward movement of the horizontal link causing a degree of elongation of the vertical link, and wherein the degree of elongation of the vertical link induces a change in the position of the tyre pressure gauge indicating the current pressure in the spare tyre.
[0012] In an embodiment, when the pressure of the spare tyre is increased decreased, the downward movement of the horizontal link causing a degree of contraction of the vertical link, wherein the degree of contraction of the vertical link includes a change in the position of the tyre pressure indicating the current pressure in the spare tyre.
[0013] In an embodiment, the tyre monitoring system includes a rail housed vertically at a side of the spare tyre in the spare tyre space, a laser mounted over the rail and is movable in upward and downward direction over the rail, and a motor housed in the spare tyre space and connected to the rail and laser. The motor provides power to move the laser over on the rail. A tyre tread system connected to the controller configured to determine a distance between the laser and a peak of the tread and a distance between the laser and a trough of the tread by emitting a laser beam by the laser. The controller is configured to determine wear of the spare tyre based on the distance between the peak of the tread and the distance between the laser and the trough of the tread and send a notification about the wear of the spare tyre to a driver of the vehicle.

[0014] In another aspect the object is satisfied by providing a tyre monitoring system for detecting tyre tread. The tyre monitoring system includes a rail housed vertically at a side of the spare tyre in the spare tyre space, a laser mounted over the rail and is movable in upward and downward direction over the rail, and a motor housed in the spare tyre space and connected to the rail and laser. The motor provides power to move the laser over on the rail. A tyre tread system connected to the controller configured to determine a distance between the laser and a peak of the tread and a distance between the laser and a trough of the tread by emitting a laser beam by the laser. The controller is configured to determine wear of the spare tyre based on the distance between the peak of the tread and the distance between the laser and the trough of the tread and send a notification about the wear of the spare tyre to a driver of the vehicle.
[0015] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the scope thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The proposed tyre monitoring system is illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding part in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0017] FIG. 1 illustrates a tyre monitoring system for monitoring health of a spare tyre of a vehicle and provide notifications to a driver of the vehicle, according to embodiments as disclosed herein;

[0018] FIG. 2 illustrates positioning of a tyre pressure gauge and a laser relative to
a spare tyre in a spare tyre space, according to an implementation of the present
subject matter, according to embodiments as disclosed herein;
[0019] FIG. 3 illustrates an example C-Clamp Spring System with the detector,
according to embodiments as disclosed herein; and
[0020] FIG. 4 illustrates a laser rail system for detecting tyre tread, according to
embodiments as disclosed herein.
[0021] It may be noted that to the extent possible, like reference numerals have been used to represent like elements in the drawing. Further, those of ordinary skill in the art will appreciate that elements in the drawing are illustrated for simplicity and may not have been necessarily drawn to scale. For example, the dimension of some of the elements in the drawing may be exaggerated relative to other elements to help to improve the understanding of aspects of the invention. Furthermore, the one or more elements may have been represented in the drawing by conventional symbols, and the drawings may show only those specific details that are pertinent to the understanding the embodiments of the invention so as not to obscure the drawing with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.
DETAILED DESCRIPTION OF THE INVENTION
[0022] The implementations herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting implementations that are illustrated in the accompanying drawings and detailed in the following description. It should be understood, however, that the following descriptions, while indicating preferred implementations and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the implementations herein without departing from the spirit thereof, and the implementations herein include all such modifications. The examples used herein are intended merely to facilitate

an understanding of ways in which the implementations herein can be practiced and to further enable those skilled in the art to practice the implementations herein. Accordingly, the examples should not be construed as limiting the scope of the implementations herein.
[0023] Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the implementations herein. Also, the various implementations described herein are not necessarily mutually exclusive, as some implementations can be combined with one or more other implementations to form new implementations.
[0024] Referring now to the drawings, and more particularly to FIGS. 1 through 4, where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred implementations. Further, for the sake of simplicity, and without limitation, the same numbers are used throughout the drawings to reference like features and components. The implementations herein will be better understood from the following description with reference to the drawings.
[0025] FIG. 1 illustrates a tyre monitoring system (1) for monitoring health of a spare tyre of a vehicle and provide notifications to a driver of the vehicle, according to embodiments as disclosed herein. The tyre monitoring system (1) includes a tyre pressure gauge (3), a tyre pressure system (4), a controller (5), a rail (8), a laser (9), a motor (11) (shown in the FIG. 2 and Figure 4), and a tyre tread system (10). The tyre pressure gauge (3) is housed in a spare tyre space in the vehicle. In an embodiment, the tyre pressure gauge (3) is one of a C-clamp spring and a strain gauge. The tyre pressure gauge (3) elongates with an increase in pressure of the tyre and reduce in length with a decrease in the pressure of the tyre. The tyre pressure gauge (3) is housed vertically at side of the spare tyre space such that the tyre pressure gauge (3) is adjacent to the spare tyre (2).

[0026] In an embodiment, a vertical link (6) is connected to the tyre pressure gauge (3) at the side of the spare tyre space. The vertical link (6) rest on a top surface of the spare tyre (2) when the spare tyre (2) is accommodated in the spare tyre space. A horizontal link (7) is coupled to the vertical link (6) and extends horizontally from a top of the vertical link (6) towards a centre of the spare tyre space. The horizontal link (7) follow an upward when the pressure of the spare tyre (2) is increased or a downward movement of the top surface of the spare tyre (2) when the pressure of the spare tyre (2) is decreased.
[0027] The horizontal link (7) is coupled to the vertical link (6) such that the horizontal link (7) and the vertical link (6) cannot move relative to each other in a vertical plane. When the pressure of the spare tyre (2) is increased, the upward movement of the horizontal link (7) causing a degree of elongation of the vertical link (6), and wherein the degree of elongation of the vertical link (6) induces a change in the position of the tyre pressure gauge (3) indicating the current pressure in the spare tyre (2). Similarly, when the pressure of the spare tyre (2) is increased decreased, the downward movement of the horizontal link (7) causing a degree of contraction of the vertical link (6), wherein the degree of contraction of the vertical link (6) includes a change in the position of the tyre pressure indicating the current pressure in the spare tyre (2).
[0028] The tyre pressure system (4) is connected to the tyre pressure gauge (3) and is configured to detect a position of the tyre pressure gauge (3) and send a voltage signal indicative of a current pressure of the spare tyre (2) in the vehicle based on the position of the tyre pressure gauge (3).
[0029] In an embodiment, the tyre pressure system (4) generates a voltage signal corresponding to the degree of elongation/compression of the spring. The tyre pressure system (4) includes a voltage divider having a resistor. A wiper may be in slidable contact with the resistor and may be coupled to the spring. A portion of the resistor with which the wiper makes contact varies with the tyre pressure gauge (3).

The portion of the resistor with which the wiper makes contact determines a voltage drop across an end of the resistor and the wiper. Thus, the voltage drop is indicative of the length of the spring. Since the length of the spring is indicative of the pressure of the spare tyre, the voltage drop is indicative of the pressure of the spare tyre.
[0030] The controller (5) is connected to the tyre pressure system (4) and is configured to receive the voltage signal indicative of a current pressure of the spare tyre (2) of the vehicle. The controller (5) is configured to determine whether the current pressure meets a predefined pressure of the spare tyre (2), and send a notification comprising the current pressure of the spare tyre (2) to a driver of the vehicle when the current pressure less than a predefined pressure of the spare tyre (2).
[0031] In an embodiment, the controller (5) displays the notification comprising information about the current pressure of the spare tyre (2) on a screen mounted on a dashboard of the vehicle.
[0032] In an embodiment, the controller (5) is configured to determine a tyre repair shop based on a current location of the vehicle upon receiving the notification, and navigate the driver to the location of the tyre repair shop to repair the current pressure.
[0033] In an example implementation, the tyre pressure gauge (3) is a C-clamp spring system as shown in the FIG. 1. The example implementation explained below using the C-clamp spring system. To determine usability of the spare tyre (2), the present subject matter enables monitoring pressure and tread depth of the spare tyre (2). To monitor the pressure, the spring system having a spring may be used. The spring system is mounted such that the spring elongates with an increase in tyre pressure and reduces in length with a decrease in tyre pressure. The spring is disposed vertically in the spare tyre space. Accordingly, when the spare tyre (2) is housed in the spare tyre space, the spring is adjacent to the spare tyre (2). Further,

the spring extends in height in a thickness direction of the spare tyre (2). The spring may be part of a vertical link (6) of the spring system. The spring system also includes a horizontal link (7) that extends horizontally from a top of the vertical link (6) towards the centre of the spare tyre space. The horizontal link (7) is coupled to the vertical link (6) such that the horizontal link (7) and the vertical link (6) cannot move relative to each other in a vertical plane. When the spare tyre (2) is accommodated in the spare tyre space, the horizontal link (7) may rest on a top surface of the spare tyre (2). Accordingly, the horizontal link (7) may follow an upward or a downward movement of the top surface. The top surface rises for an increase in the pressure of the spare tyre (2) and moves downwards for a decrease in the pressure. The height at which the horizontal link (7) is disposed (i.e., a distance between the horizontal link (7) and a floor of the spare tyre space) may indicate the pressure of the spare tyre (2).
[0034] As explained above example, the horizontal link (7) cannot move relative to the vertical link (6) in the vertical plane. Therefore, an upward movement of the horizontal link (7) (which is caused by an increase in the pressure of the spare tyre (2)) causes a lengthening of the vertical link (6) and a downward movement of the horizontal link (7) (which is caused by a decrease in the pressure of the spare tyre (2)) causes a contraction of the vertical link (6). The lengthening of the vertical link (6) causes an elongation of the spring, and a contraction of the vertical link (6) causes a compression of the spring. Thus, a degree of elongation/compression of the spring is indicative of the pressure in the spare tyre (2).
[0035] The tyre pressure system (4) sends the voltage signal to the controller (5). When the voltage signal is less than a threshold, the controller (5) infers that the pressure of the spare tyre (2) is less than a rated pressure and that the spare tyre (2) is not usable. Based on the inferences, the controller (5) raises an alarm/notification, which may prompt the driver of the vehicle to pump additional air into the spare tyre (2). The alarm may be a visual indication, which may be displayed on a dashboard of the vehicle. The controller (5) may also display the existing pressure

of the spare tyre (2) as a percentage of rated pressure. The percentage is determined based on a ratio of the voltage signal received to a rated voltage signal. The controller (5) may be, for example, an electronic control unit (ECU) of the vehicle.
[0036] In an embodiment, the controller (5) continually receive the voltage signal and compare the voltage signal with the threshold. Accordingly, a drop in the spare tyre (2) pressure below the rated pressure may be quickly detected and communicated to the driver. In an embodiment, upon detecting a low pressure of the spare tyre (2), the controller (5) may also locate a nearby tyre repair shop and may prompt the driver to reach there. To locate the nearby tyre repair shop, information of current location of the vehicle (which can be obtained by a GPS of the vehicle) may be utilized.
[0037] In an embodiment, the spring system voltage signal may also be used to determine whether the spare tyre (2) is properly accommodated in the spare tyre space. For instance, when the spare tyre (2) is not properly bolted in the spare tyre space, the spare tyre (2) may keep vibrating during travel of the vehicle. Such a vibration causes the voltage signal to continuously vary. Based on the continuous variation of the voltage signal, the monitoring system may infer that the spare tyre (2) is not properly fitted in the spare tyre space, and may prompt the driver of the vehicle to fit it properly.
[0038] Although the tyre pressure gauge (3) for determining tyre pressure is explained as the C-clamp spring-based system as described in the FIG. 3, other types of systems may also be used. For example, a strain gauge that can generate a voltage depending on a weight of the spare tyre (2) may be used.
[0039] Apart from determining the pressure of the spare tyre (2) as described above, the present subject matter also enables determining if the tread of the spare tyre (2) has worn significantly. The wear of the tread is determined by determining a distance between a peak of the tread and an adjoining trough of the tread. If the

distance is less, such as close to zero, it may be inferred that the tread has undergone significant wear.
[0040] In an embodiment, in order to enable determining the tread of the spare tyre (2) has worn significantly, the rail (8) is housed vertically at a side of the spare tyre (2) in the spare tyre space. The rail (8) may be disposed vertically in the spare tyre space, and may be mounted on a body-in-white (BIW) of the vehicle. In an embodiment, the tyre tread system (10) and the tyre pressure gauge (3) are housed at opposite sides of the the spare tyre (2) in the spare tyre space. For example, the rail (8) may be disposed close to a side of the spare tyre space, such as a side opposite the side near which the spring system is disposed as shown in the FIG. 1. Accordingly, when the spare tyre (2) is disposed in the spare tyre space, the spring system and the laser may face opposite sides of the spare tyre (2).
[0041] To determine the distance between the peak and adjoining trough of the tread, the laser (9) is mounted over the rail (8) and is movable in upward and downward direction over the rail (8). To enable movement of the laser (9), the motor (11) is housed in the spare tyre space and is connected to the rail (8) and the laser (9). As illustrated in the FIG. 2, the motor (11) is disposed in the rail (8). The motor (11) may be coupled to the laser to move the laser (9) along the rail (8). The motor (11) provides power to move the laser (9) over on the rail (8). The tyre tread system (10) is connected to the controller (5).
[0042] The tyre tread system (10) is configured to determine a distance between the laser (9) and a peak of the tread and a distance between the laser (9) and a trough of the tread by emitting a laser beam by the laser (9).
[0043] In an embodiment, in order to determine the distance between the laser (9) and the peak of the tread, the laser (9) is positioned at a first point on the rail (8) that faces the peak of the tread. Upon positioning in front of the peak at the first point, the laser beam is emitted on the peak of the tread by the laser (9). The emitted

laser beam is reflected off the peak and is detected by a detector (13) (shown in FIG. 3). A time lag between the emission of the laser beam and receipt of the reflected beam is indicative of the distance between the laser and the peak. The distance between the laser (9) and the peak of the tread is determined based on the time lag between the emission of the laser beam and a receipt of the reflected beam.
[0044] In an embodiment, in order to determine the distance between the laser (9) and the peak of the tread, the laser (9) is positioned at a second point on the rail (8) that faces the trough of the tread. Upon positioning in front of the trough at the second point, the laser beam is emitted on the trough of the tread by the laser (9). A time lag between the emission of the laser beam and receipt of the reflected beam is indicative of the distance between the laser and the trough. The emitted laser beam is reflected off the trough and is detected by the detector (13). The distance between the laser (9) and the trough of the tread is determined based on the time lag between the emission of the laser beam and a receipt of the reflected beam.
[0045] Further, the controller (5) is configured to determine wear of the spare tyre (2) based on the distance between the peak of the tread and the distance between the laser (9) and the trough of the tread and send a notification about the wear of the spare tyre (2) to a driver of the vehicle. In an embodiment, the controller (5) is configured to determine a distance difference between the distance between the laser (9) and the peak of the tread and the distance between the laser (9) and the trough of the tread. The controller (5) checks whether the distance difference meets a predefined distance threshold and detects the wear of the spare tyre (2) upon determining that the distance difference meets the predefined distance threshold.
[0046] A difference between the distance between the peak of the tread and the distance between the laser (9) and the trough of the tread is indicative of the wear of the tyre. For example, when the difference is less than a threshold, the controller (5) may infer that the spare tyre (2) has undergone a significant wear and that the tyre is non-usable. Based on the inferences, the controller (5) may raise an

alarm/notification, which may prompt the driver to replace the spare tyre (2) with a new one or re-tread the spare tyre (2). The alarm may be, for example, a visual indication on a dashboard of the vehicle. The alarm may also include indicate the measured tread depth as a percentage of a rated tread depth. The rated tread depth may be preconfigured in the monitoring system.
[0047] In an embodiment, the movement of the laser (9) along the rail (8) to the first point and the second point, and emission of the laser beam may be performed each time the vehicle ignition is turned on. Further, in an embodiment, based on the signals from the laser (9), the tyre tread system (4) may also detect the absence of spare tyre (2) in the spare tyre space, and may prompt the driver to fit a spare tyre (2) in the spare tyre space.
[0048] In an embodiment, the controller (5) displays the notification about the wear of the spare tyre (2) on a screen mounted on a dashboard of the vehicle. In an embodiment, the controller (5) is configured to determine a tyre repair shop based on a current location of the vehicle upon receiving the notification about the wear of the spare tyre (2), and navigate the driver to the location of the tyre repair shop to repair the wear of the spare tyre (2) or change the spare tyre (2).
[0049] FIG. 2 illustrates positioning of the tyre pressure gauge (3) and the laser (9) relative to the spare tyre (2) in the spare tyre space, according to an implementation of the present subject matter, according to embodiments as disclosed herein. As illustrated, a handle (12) is fixed to the horizontal link (7) of the tyre pressure gauge (3). Using the handle (12), the horizontal link (7) may be swivelled in a horizontal plane. When the spare tyre (2) is to be placed in the spare tyre space, the horizontal link (7) is swivelled away from the centre of the spare tyre space and the spare tyre (2) may be placed thereafter. Upon the placement, the horizontal link (7) is swivelled towards the centre of the spare tyre space and disposed such that the horizontal link (7) rests on the top surface of the spare tyre (2).

[0050] The present subject matter enables determining usability of the spare tyre (2) before a need for the spare tyre (2) arises. The present subject matter can be implemented using simple and cost-effective components, such as a spring and a laser.
[0051] FIG. 3 illustrates an example C-Clamp Spring System with the detector (13), according to embodiments as disclosed herein. The detector (13) described herein can be, for example, but is not limited to, an ultrasonic sensor, an infrared sensor, a laser distance sensor like LiDAR, Time-of-Flight sensor or the like. The detector (13) detects a distance difference between the distance between the laser (9) and the peak of the tread and the distance between the laser (9) and the trough of the tread.
[0052] The C-clamp spring system is used to determining tyre pressure using the tyre pressure gauge (3) and the detector (13). The C-clamp spring system includes the tyre pressure system (3). The system includes the two horizontal links (7) and the spring (3). The first link (7a) is welded to the BIW of the vehicle which is then connected to the spring (3) which is further connected to the second link (7b) that stows on the surface of the tyre (2) for the system to work.
[0053] In absence of the tyre (2), the system contracts to a minimum height. When the tyre (2) is placed in the spare tyre area, the second link (7b) of the system is pulled vertically up and is placed on the upper surface of the tyre (2).
[0054] Working principle: When a perfectly inflated tyre is placed in the spare tyre area and the second link (7b) is stowed on the surface of the tyre (2). The ‘potentiometer’ or ‘load cell’ type of the detector (13) is calibrated to measure a potential energy in the elongated spring. When the tyre is slowly deflated, the potential energy in the spring (3) is also reduced as the potential energy is directly proportional to the distance the spring (3) is elongated. Based on the reduction of the potential energy, a notification is sent to driver that the spare tyre (2) is below the threshold pressure level and monitor/rectify the tyre (2) before going for a ride.

[0055] Another benefit of the C-clamp spring system is to notify the driver that spare tyre is not mounted properly when the spare tyre is not mounted properly in the spare tyre area. The C-clamp spring system detects variation in the potential energy using the spring (3) and the detector (13) and notify the driver that spare tyre is not mounted properly.
[0056] FIG. 4 illustrates the laser rail system for detecting tyre tread, according to embodiments as disclosed herein. The laser rail system includes the rail (8) vertically mounted to move a peak (14) and trough (15) over the rail (8). The rail (8) is housed vertically at a side of the spare tyre (2) and is mounted on the BIW of the vehicle. To determine the distance between the peak (14) and adjoining trough (15) of the tread, the laser (9a, 9b) are mounted over the rail (8) and is movable in upward and downward direction over the rail (8). The laser (9a) corresponds to the peak (14) and the laser (9b) corresponds to the trough (15). The laser (9a and 9b) is movable over the rail (8). The tyre tread system (10) is configured to determine a distance to peak (p) between the laser (9a) and the peak (14) of the tread by emitting a laser beam by the laser (9a) and a distance to trough (t) between the laser (9b) and the trough (t\15) of the tread by emitting a laser beam by the laser (9b).
[0057] The the laser rail system determines a distance difference (t-p) between the distance to peak (p) and the distance to trough (t). The distance difference (t-p) will reduce when tire wears out. The laser rail system checks whether the distance difference (t-p) meets a predefined distance threshold and detects the wear of the spare tyre (2) upon determining that the distance difference meets the predefined distance threshold. A distance difference (t-p) between the distance between the distance to peak (p) and the distance to trough (t) is indicative of the wear of the tyre.
[0058] The foregoing description of the specific implementations will so fully reveal the general nature of the implementations herein that others can, by applying current knowledge, readily modify and/or adapt for various applications without

departing from the generic concept, and, therefore, such modifications and adaptations should and are intended to be comprehended within the meaning and range of equivalents of the disclosed implementations. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the implementations herein have been described in terms of preferred implementations, those skilled in the art will recognize that the implementations herein can be practiced with modification within the spirit and scope of the implementations as described herein.
[0059] List to reference numerals:

Sr. No. Description
1 tyre monitoring system
2 spare tyre
3 tyre pressure gauge
4 tyre pressure system
5 controller
6 vertical link
7a, 7b horizontal link (first link and second link)
8 rail
9 laser
9a Laser for peak
9b Laser for Trough
10 tyre tread system
11 motor
12 handle
13 detector
14 Peak
15 Trough

We Claim:
1. A tyre monitoring system (1) for monitoring health of a spare tyre (2) in a
vehicle, wherein the tyre monitoring system (1) comprises:
a tyre pressure gauge (3) housed in a spare tyre space in the vehicle; a tyre pressure system (4), connected to the tyre pressure gauge (3), configured to detect a position of the tyre pressure gauge (3) and send a voltage signal indicative of a current pressure of the spare tyre (2) in the vehicle based on the position of the tyre pressure gauge (3); and
a controller (5), connected to the tyre pressure system (4), configured to:
receive the voltage signal indicative of a current pressure of the spare tyre (2) in the vehicle,
determine whether the current pressure meets a predefined pressure of the spare tyre (2), and
send a notification comprising the current pressure of the spare tyre (2) to a driver of the vehicle when the current pressure less than a predefined pressure of the spare tyre (2).
2. The tyre monitoring system (1) as claimed in claim 1, wherein the tyre pressure gauge (3) elongates with an increase in pressure of the tyre and reduce in length with a decrease in the pressure of the tyre.
3. The tyre monitoring system (1) as claimed in claim 1, wherein the tyre pressure gauge (3) is housed vertically at side of the spare tyre space such that the tyre pressure gauge (3) is adjacent to the spare tyre (2).
4. The tyre monitoring system (1) as claimed in claim 1, wherein tyre monitoring system (1) comprises:
a vertical link (6) connected to the tyre pressure gauge (3) at the side of the spare tyre space, wherein the vertical link (6) rest on a top surface of the spare tyre (2) when the spare tyre (2) is accommodated in the spare tyre space; and

a horizontal link (7) coupled to the vertical link (6) and extends horizontally from a top of the vertical link (6) towards a centre of the spare tyre space, wherein the horizontal link (7) follow an upward when the pressure of the spare tyre (2) is increased or a downward movement of the top surface of the spare tyre (2) when the pressure of the spare tyre (2) is decreased.
5. The tyre monitoring system (1) as claimed in claim 4, wherein the horizontal link (7) is coupled to the vertical link (6) such that the horizontal link (7) and the vertical link (6) cannot move relative to each other in a vertical plane.
6. The tyre monitoring system (1) as claimed in claim 4, wherein when the pressure of the spare tyre (2) is increased, the upward movement of the horizontal link (7) causing a degree of elongation of the vertical link (6), and wherein the degree of elongation of the vertical link (6) induces a change in the position of the tyre pressure gauge (3) indicating the current pressure in the spare tyre (2).
7. The tyre monitoring system (1) as claimed in claim 4, wherein when the pressure of the spare tyre (2) is increased decreased, the downward movement of the horizontal link (7) causing a degree of contraction of the vertical link (6), wherein the degree of contraction of the vertical link (6) includes a change in the position of the tyre pressure indicating the current pressure in the spare tyre (2).
8. The tyre monitoring system (1) as claimed in claim 4, comprises:
a handle (12) fixed to the horizontal link (7) of the tyre pressure gauge (3), wherein when the spare tyre (2) is to be placed in the spare tyre space, the horizontal link (7) is swivelled away from a centre of the spare tyre space and the spare tyre (2) is accommodated in the spare tyre space, and
wherein when the spare tyre (2) is accommodated in the spare tyre space, the horizontal link (7) is swivelled towards the centre of the spare tyre space

and disposed such that the horizontal link (7) rests on a top surface of the spare tyre (2).
9. The tyre monitoring system (1) as claimed in claim 1, wherein the tyre pressure gauge (3) is one of a C-clamp spring system and a strain gauge.
10. The tyre monitoring system (1) as claimed in claim 1, wherein the tyre pressure system (4) comprises:
a voltage divider; a resistor; and
a wiper in slidable contact with the resistor and coupled to the tyre pressure gauge (3).
11. The tyre monitoring system (1) as claimed in claim 1, wherein the controller (5) displays the notification comprising information about the current pressure of the spare tyre (2) on a screen mounted on a dashboard of the vehicle.
12. The tyre monitoring system (1) as claimed in claim 1, wherein the controller (5) is configured to:
determine a tyre repair shop based on a current location of the vehicle upon receiving the notification, and
navigate the driver to the location of the tyre repair shop to repair the current pressure.
13. The tyre monitoring system (1) as claimed in claim 1, comprising:
a rail (8) housed vertically at a side of the spare tyre (2) in the spare tyre space;
a laser (9) mounted over the rail (8) and is movable in an upward and a downward direction over the rail (8);

a motor (11) housed in the spare tyre space and connected to the rail (8) and laser (9), wherein the motor (11) provides power to move the laser (9) over on the rail (8); and
a tyre tread system (10) connected to the controller (5) configured to determine a distance between the laser (9) and a peak of the tread and a distance between the laser (9) and a trough of the tread by emitting a laser beam by the laser (9),
wherein the controller (5) is configured to determine wear of the spare tyre (2) based on the distance between the peak of the tread and the distance between the laser (9) and the trough of the tread and send a notification about the wear of the spare tyre (2) to a driver of the vehicle.
14. The tyre monitoring system (1) as claimed in claim 13, wherein the tyre tread system (10) and the tyre pressure gauge (3) are housed at opposite sides of the the spare tyre (2) in the spare tyre space.
15. The tyre monitoring system (1) as claimed in claim 13, wherein the distance between the laser (9) and the peak of the tread comprises:
positioning the laser (9) at a first point on the rail (8) that faces the peak of the tread;
emitting the laser beam on the peak of the tread by the laser (9) positioned at the first point, wherein the emitted laser beam is reflected off the peak and is detected by a detector (13); and
determining the distance between the laser (9) and the peak of the tread based on a time lag between the emission of the laser beam and receipt of the reflected beam.
16. The tyre monitoring system (1) as claimed in claim 13, wherein the distance
between the laser (9) and the peak of the tread comprises:
positioning the laser (9) at a second point on the rail (8) that faces the trough of the tread;

emitting the laser beam on the trough of the tread by the laser (9) positioned at the second point, wherein the emitted laser beam is reflected off the trough and is detected by a detector (13); and
determining the distance between the laser (9) and the trough of the tread based on a time lag between the emission of the laser beam and receipt of the reflected beam.
17. The tyre monitoring system (1) as claimed in claim 13, wherein detect wear of
the spare tyre (2) based on the distance between the peak of the tread and the
distance between the laser (9) and the trough of the tread comprises:
determine a distance difference between the distance between the laser (9) and the peak of the tread and the distance between the laser (9) and the trough of the tread;
determine whether the distance difference meets a predefined distance threshold; and
detect wear of the spare tyre (2) upon determining that the distance difference meets the predefined distance threshold.
18. The tyre monitoring system (1) as claimed in claim 13, wherein the controller (5) displays the notification about the wear of the spare tyre (2) on a screen mounted on a dashboard of the vehicle.
19. The tyre monitoring system (1) as claimed in claim 13, wherein the controller (5) is configured to:
determine a tyre repair shop based on a current location of the vehicle upon receiving the notification about the wear of the spare tyre (2), and
navigating the driver to the location of the tyre repair shop to repair the wear of the spare tyre (2) or change the spare tyre (2).
20. A tyre monitoring system (1) for detecting tyre tread, wherein the tyre
monitoring system (1) comprises:

a rail (8) housed vertically at a side of the spare tyre (2) in a spare tyre space;
a laser (9) mounted over the rail (8) and is movable in an upward and a downward direction over the rail (8);
a motor (11) housed in the spare tyre space and is connected to the rail (8) and laser (9), wherein the motor (11) provides power to move the laser (9) over on the rail (8); and
a tyre tread system (10) connected to a controller (5) configured to determine a distance between the laser (9) and a peak of the tread and a distance between the laser (9) and a trough of the tread by emitting a laser beam by the laser (9),
wherein the controller (5) is configured to determine wear of the spare tyre (2) based on the distance between the peak of the tread and the distance between the laser (9) and the trough of the tread and send a notification about the wear of the spare tyre (2) to a driver of the vehicle.
21. The tyre monitoring system (1) as claimed in claim 20, wherein the tyre tread system (10) and the tyre pressure gauge (3) are housed at opposite sides of the the spare tyre (2) in the spare tyre space.
22. The tyre monitoring system (1) as claimed in claim 20, wherein the distance between the laser (9) and the peak of the tread comprises:
positioning the laser (9) at a first point on the rail (8) that faces the peak of the tread;
emitting the laser beam on the peak of the tread by the laser (9) positioned at the first point, wherein the emitted laser beam is reflected off the peak and is detected by a detector (13); and
determining the distance between the laser (9) and the peak of the tread based on a time lag between the emission of the laser beam and receipt of the reflected beam.

23. The tyre monitoring system (1) as claimed in claim 20, wherein the distance
between the laser (9) and the peak of the tread comprises:
positioning the laser (9) at a second point on the rail (8) that faces the trough of the tread;
emitting the laser beam on the trough of the tread by the laser (9) positioned at the second point, wherein the emitted laser beam is reflected off the trough and is detected by a detector (13); and
determining the distance between the laser (9) and the trough of the tread based on a time lag between the emission of the laser beam and receipt of the reflected beam.
24. The tyre monitoring system (1) as claimed in claim 20, wherein detect wear of
the spare tyre (2) based on the distance between the peak of the tread and the
distance between the laser (9) and the trough of the tread comprises:
determine a distance difference between the distance between the laser (9) and the peak of the tread and the distance between the laser (9) and the trough of the tread;
determine whether the distance difference meets a predefined distance threshold; and
detect wear of the spare tyre (2) upon determining that the distance difference meets the predefined distance threshold.
25. The tyre monitoring system (1) as claimed in claim 20, wherein the controller (5) displays the notification about the wear of the spare tyre (2) on a screen mounted on a dashboard of the vehicle.
26. The tyre monitoring system (1) as claimed in claim 20, wherein the controller (5) is configured to:
determine a tyre repair shop based on a current location of the vehicle upon receiving the notification about the wear of the spare tyre (2), and

navigating the driver to the location of the tyre repair shop to repair the wear of the spare tyre (2) or change the spare tyre (2).