DESC:FIELD
The present disclosure relates to the field of vehicles.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
A vehicle undergoes wheel slippage due to insufficient traction which leads to significant wear and tear of tyres of the vehicle. This results in the frequent change of the tyres leads to the changing of the tyres thereby increasing the maintenance cost of the vehicle. Moreover, the slippage of the tyres may increase the probability of the accidents.
Therefore, there is felt a need to provide a system and method to identify wheel slippage of a vehicle that alleviates the aforementioned drawbacks.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
It is an object of the present disclosure to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
An object of the present disclosure is to provide a system and method to identify wheel slippage of a vehicle.
Another object of the present disclosure is to provide a system that is easy to use.
Still another object of the present disclosure is to provide a system that reduces the chances of accidents.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure envisages a method to identify wheel slippage of a vehicle. The steps include:
receiving, a first data stream corresponding to speed of the vehicle;
receiving, a second data stream corresponding to the engine RPM of the vehicle;
computing, ground speed of the vehicle based on the received first data stream;
computing, engine-based vehicle speed based on the ground speed and the received second data stream; and
identifying, wheel slippage of the vehicle by comparing the ground speed and the engine-based vehicle speed.
The system to estimate wheel slippage of a vehicle (hereinafter referred as “system”) comprises a speed detection unit and a slippage detection unit.
The speed detection unit is configured to receive a first data stream corresponding to speed of the vehicle, and a second data stream corresponding to the engine RPM of the vehicle. The speed detection unit comprises a ground speed detection module and an engine speed detection module.
The ground speed detection module is configured to compute ground speed of the vehicle based on the received first data stream.
The ground speed detection module receives the first data stream from the GPS device, and is configured to determine distance travelled by the vehicle and time take for traversing the distance to compute ground speed of the vehicle.
In an embodiment, the first data stream is a GPS data stream generated by a GPS device located within the vehicle.
The engine speed detection module is configured to cooperate with the ground speed detection module to compute engine-based vehicle speed based on the computed ground speed and the received second data stream.
The engine speed detection module includes an engine RPM calculator, a gear ratio calculator and engine speed detector.
The engine RPM calculator is configured to receive at least one of the voltage and current signal, and is further configured to process the received signal at a high frequency to determine the engine RPM.
The gear ratio calculator is configured to cooperate with the engine RPM calculator and the ground speed detection module to compute gear ratio of the vehicle based on a highest pre-determined number of values of the ground speed points and the engine RPM corresponding to the ground speed points.
The engine speed detector is configured to cooperate with the gear ratio calculator and the engine RPM calculator to receive the determined engine RPM and the computed gear ratio, and is further configured to compute the engine-based vehicle speed based on the received engine RPM and gear ratio.
In an embodiment, the second data stream is at least one of a voltage and a current signal associated with battery of the vehicle.
The slippage detection unit is configured to cooperate with the speed detection unit to identify wheel slippage of the vehicle based on comparison of the ground speed and the engine based vehicle speed,
The speed detection unit and the slippage detection unit are implemented using one or more processor(s).
BRIEF DESCRIPTION OF ACCOMPANYING DRAWING
A system and a method to identify wheel slippage of a vehicle, of the present disclosure will now be described with the help of the accompanying drawing, in which:
Figure 1 illustrates a flow diagram depicting steps involved in a method to identify wheel slippage of a vehicle; and

Figure 2 illustrates a block diagram of a system to estimate wheel slippage of a vehicle.
LIST OF REFERENCE NUMERALS USED IN DETAILED DESCRIPTION AND DRAWING
200 System
202 speed detection unit
204 ground speed detection module
206 engine speed detection module
208 slippage detection unit
210 GPS device
212 engine RPM calculator
214 gear ratio calculator
216 engine speed detector
DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open ended transitional phrases and therefore specify the presence of stated features, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, elements, components, and/or groups thereof.
A system and method to identify wheel slippage of a vehicle is now being described with reference to Figure 1 through Figure 2.
Figure 1 illustrates a flow diagram depicting steps involved in a method to identify wheel slippage of a vehicle. The steps include:
Step 102: receiving, a first data stream corresponding to speed of the vehicle;
Step 104: receiving, a second data stream corresponding to the engine RPM of the vehicle;
Step 106: computing, ground speed of the vehicle based on the received first data stream;
Step 108: computing, engine-based vehicle speed based on the ground speed and the received second data stream; and
Step 110: identifying, wheel slippage of the vehicle by comparing the ground speed and the engine-based vehicle speed.
Referring to Figure 2, the system to estimate wheel slippage of a vehicle (hereinafter referred as “system”) (200) comprises a speed detection unit (202) and a slippage detection unit (208).
The speed detection unit (202) is configured to receive a first data stream corresponding to speed of the vehicle, and a second data stream corresponding to the engine RPM of the vehicle. The speed detection unit (202) comprises a ground speed detection module (204) and an engine speed detection module (206).
The ground speed detection module (204) is configured to compute ground speed of the vehicle based on the received first data stream.
The ground speed detection module (204) receives the first data stream from the GPS device (210), and is configured to determine distance travelled by the vehicle and time take for traversing the distance to compute ground speed of the vehicle.
In an embodiment, the first data stream is a GPS data stream generated by a GPS device (210) located within the vehicle.
The engine speed detection module (206) is configured to cooperate with the ground speed detection module to compute engine-based vehicle speed based on the computed ground speed and the received second data stream.
The engine speed detection module (206) includes an engine RPM calculator (212), a gear ratio calculator (214) and engine speed detector (216).
The engine RPM calculator (212) is configured to receive at least one of the voltage and current signal, and is further configured to process the received signal at a high frequency to determine the engine RPM.
The gear ratio calculator (214) is configured to cooperate with the engine RPM calculator (212) and the ground speed detection module (204) to compute gear ratio of the vehicle based on a highest pre-determined number of values of the ground speed points and the engine RPM corresponding to the ground speed points.
In an embodiment, for the gear ratio calculation a tractor may be assumed to be running in a single gear for a duration of at least 100 seconds, which may be generally true since the tractor gears may not be changed for hours.
The engine speed detector (216) is configured to cooperate with the gear ratio calculator (214) and the engine RPM calculator (212) to receive the determined engine RPM and the computed gear ratio, and is further configured to compute the engine-based vehicle speed based on the received engine RPM and gear ratio.
In an embodiment, the second data stream is at least one of a voltage and a current signal associated with battery of the vehicle.
The slippage detection unit (208) is configured to cooperate with the speed detection unit to identify wheel slippage of the vehicle based on comparison of the ground speed and the engine based vehicle speed,
The speed detection unit (202) and the slippage detection unit (208) are implemented using one or more processor(s).
The processors disclosed herein may be general-purpose processors, Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), and/or the like. The processors may be configured to retrieve data from and/or write data to a memory/repository. The memory/repository can be for example, a random access memory (RAM), a memory buffer, a hard drive, a database, an erasable programmable read only memory (EPROM), an electrically erasable programmable read only memory (EEPROM), a read only memory (ROM), a flash memory, a hard disk, a floppy disk, cloud storage, and/or so forth.
In an exemplary embodiment, for a wheel of Radius r, angular velocity ? and translational velocity v, the relation between r, ? and v for no slippage condition is:
v = r* ?
If r* ? is greater than or less than v, then the vehicle will experience a wheel slippage.
r* ? is also related to the engine RPM as:
r*? = Engine RPM * Gear Ratio
The v is equal to the Engine Speed.
For no slippage condition,
Engine Speed = Engine RPM * Gear Ratio
Assuming that there may be no slippage for the top 10% of the points with highest v generated during these 100 seconds. Using this assumption, the gear ratio for those points can be calculated as:
Gear Ratio on current gear = Speed for top 10% points / Engine RPM
This gear ratio may come close to the known gear ratios of the vehicle.
The wheel slippage may be calculated as:
Wheel slippage (in percentage) = (r* ? – v)/(r* ?) * 100
The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCES AND ECONOMICAL SIGNIFICANCE
The present disclosure described herein above has several technical advantages including, but not limited to, the realization of a system and method to identify a wheel slippage of vehicle that:
easy to use; and
reduces the chances of accidents due to the wheel slippage.
The foregoing description of the specific embodiments so fully reveals the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. 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 embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Throughout this specification the word “comprise”, or variations such as “comprises” or “comprising”, will be understood to imply the inclusion of a stated element, step, or group of elements, steps, but not the exclusion of any other element, step, or group of elements, or steps.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.
,CLAIMS:WE CLAIM:
1. A method (100) for identifying wheel slippage of a vehicle, said method (100) comprising the following steps:
• receiving (102), a first data stream corresponding to speed of the vehicle;
• receiving (104), a second data stream corresponding to the engine RPM of the vehicle;
• computing (106), ground speed of the vehicle based on said received first data stream;
• computing (108), engine-based vehicle speed based on said ground speed and said received second data stream; and
• identifying (110), wheel slippage of said vehicle by comparing said ground speed and said engine-based vehicle speed.
2. A system (200) to identify wheel slippage of a vehicle, said system (200) comprising:
• a speed detection unit (202) configured to receive a first data stream corresponding to speed of the vehicle, and a second data stream corresponding to the engine RPM of the vehicle, said speed detection unit (202) comprising:
o a ground speed detection module (204) configured to compute ground speed of the vehicle based on said received first data stream; and
o an engine speed detection module (206) configured to cooperate with said ground speed detection module to compute engine-based vehicle speed based on said computed ground speed and said received second data stream, and
• a slippage detection unit (208) configured to cooperate with said speed detection unit to identify wheel slippage of the vehicle based on comparison of said ground speed and said engine based vehicle speed,
wherein said speed detection unit (202) and said slippage detection unit (208) are implemented using one or more processor(s).
3. The system (200) as claimed in claim 2, wherein said first data stream is a GPS data stream generated by a GPS device (210) located within the vehicle.
4. The system (200) as claimed in claim 2, wherein said ground speed detection module (204) receives said first data stream from said GPS device (210), and is configured to determine distance travelled by the vehicle and time take for traversing the distance to compute ground speed of the vehicle.
5. The system (200) as claimed in claim 1, wherein said second data stream is at least one of a voltage and a current signal associated with battery of the vehicle.
6. The system (200) as claimed in claim 5, wherein said engine speed detection module (206) includes:
• an engine RPM calculator (212) configured to receive at least one of said voltage and current signal, and further configured to process said received signal at a high frequency to determine the engine RPM;
• a gear ratio calculator (214) configured to cooperate with said engine RPM calculator (212) and said ground speed detection module (204) to compute gear ratio of the vehicle based on a highest pre-determined number of values of said ground speed points and said engine RPM corresponding to said ground speed points; and
• an engine speed detector (216) configured to cooperate with said gear ratio calculator (214) and said engine RPM calculator (212) to receive said determined engine RPM and said computed gear ratio, and further configured to compute said engine-based vehicle speed based on said received engine RPM and gear ratio.