DESC:FORM – 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003

COMPLETE SPECIFICATION
(Refer section 10 and rule 13)

VEHICLE DETECTION AND WARNING SYSTEM AND METHOD THEREOF

TLG INDIA PVT. LTD.
An Indian Company,
Having registered as - Leo Burnett, Big Apple, 36
Dr. Shirodkar Road, Mumbai – 400012 Maharashtra, India

THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

FIELD OF INVENTION
[001] The present invention relates generally to warning systems and methods, and particularly but not exclusively, relate to vehicle detection and warning systems and methods.
BACKGROUND
[002] Nowadays, accidents are very common on roads and highways. The recent statistics indicate that roads and highways with sharp curves or bends contribute to 70 % of accidents happening on the roads and highways. Usually, the drivers ignore or do not observe warning systems or warning signs placed alongside such roads and highways. Furthermore, the sharp curves or hairpin bends along the roads and highways become blind spots to the driver of the vehicles. Because of these blind spots, the accidents cannot be avoided, and numerous fatal accidents happen on the roads. The authorities responsible for maintaining the roads and highways put warning signboards at crucial spots along the roads and highways to warn the drivers about the possible blind spots. However, these attempts from the authorities are not enough to prevent the fatal accidents on the roads.
[003] There have been many recent advances in the transportation industry to solve the above mentioned problems. Despite of all these advances, very little has been developed for safety at such spots on the roads and highways. Further, the state and national transportation authorities regularly engage in construction projects to increase safety at such places, particularly drawing on accident statistics for prioritizing potential projects. Previous attempts for accomplishing the increase in safety have also been hindered by the cost and lack of precision of detection technologies such as infrared, light beams and photocells, and microwave security intrusion sensors. The accuracy of these technologies can vary widely over time, temperature, and weather conditions. Ice, snow, rain, and dust can render them inoperative.
[004] Hence, there is a need of an invention which solves the above defined problems and provides a solution which can not be ignored in any weather condition and alert the drive to appropriate precautions while driving at the blind spots on roads and highways.
SUMMARY
[005] This summary is provided to introduce concepts related to a computing platform for automated vehicle parking. This summary is neither intended to identify essential features of the present disclosure nor is it intended for use in determining or limiting the scope of the present disclosure.
[006] In an embodiment of the present invention, a vehicle warning system is provided. The vehicle warning system includes first and second sensing and warning devices installed on a vehicle path. The first sensing and warning device includes a first sensing unit, a first processing unit, and a first warning unit. The second sensing and warning device includes a second warning unit. The first sensing unit transmits a first electromagnetic signal towards a first vehicle on the vehicle path by way of a radar, and receives a reflected electromagnetic signal which is reflected from the first vehicle by way of the radar. The first sensing unit calculates a relative speed of the first vehicle based on a frequency shift of the first reflected electromagnetic signal. Thereafter, the first sensing unit generates and transmits a first sensing signal indicative of the relative speed of the first vehicle. The first processing unit receives the first sensing signal and compares the relative speed of the first vehicle with a predetermined threshold speed. The first processing unit generates and transmits a first warning signal when the relative speed of the first vehicle is greater than the predetermined threshold speed. The first warning unit receives the first warning signal and displays a first visual warning on a display device based on the first warning signal, while simultaneously generating and transmitting a first audio warning through a speaker based on the first warning signal.
[007] In another embodiment of the present invention, a method for providing warning to vehicles is provided. The method includes transmitting a first electromagnetic signal towards a first vehicle on a vehicle path by a radar of a first sensing and warning device installed on the vehicle path. The method further includes receiving a first reflected electromagnetic signal which is reflected from the first vehicle by the radar of the first sensing and warning device. The first sensing and warning device then calculates a relative speed of the first vehicle based on a frequency shift of the first reflected electromagnetic signal. The first sensing and warning device compares the relative speed of the first vehicle with a predetermined threshold speed. When the relative speed of the first vehicle is greater than the predetermined threshold speed, the first sensing and warning device generates and transmits a first warning signal. Thereafter, a first visual warning is displayed on a display device of the first sensing and warning device based on the first warning signal, and, simultaneously, a first audio warning is generated and transmitted through a speaker of the first sensing and warning device based on the first warning signal. A second sensing and warning device receives the first warning signal. Thereafter, a first visual warning is displayed on a display device of the second sensing and warning device based on the first warning signal, and, simultaneously, a first audio warning is generated and transmitted through a speaker of the second sensing and warning device based on the first warning signal.
[008] In an exemplary embodiment, the second sensing and warning device includes a second sensing unit and a second processing unit. The second sensing unit transmits a second electromagnetic signal towards a second vehicle on the vehicle path by a radar and receives a second reflected electromagnetic signal which is reflected from the second vehicle by the radar. The second sensing unit calculates a relative speed of the second vehicle based on a frequency shift of the second reflected electromagnetic signal and generates and transmits a second sensing signal indicative of the relative speed of the second vehicle. The second processing unit receives the second sensing signal from the second sensing unit and compares the relative speed of the second vehicle with the predetermined threshold speed. When the relative speed of the second vehicle is greater than the predetermined threshold speed, the second processing unit generates and transmits a second warning signal. The first sensing and warning device receives the second warning signal. Further, the first and second warning units display, on the respective display devices of the first and second sensing and warning devices, a second visual warning based on the second warning signal, and, simultaneously, generate and transmit, through the respective speakers of the first and second sensing and warning devices, a second audio warning based on the second warning signal.
[009] In an exemplary embodiment, the first and second electromagnetic signals are in a frequency range of K-Band (18 to 26 GHz).
[0010] In another exemplary embodiment, the first sensing and warning device uses National Marine Electronics Association (NMEA) protocol or American Standard Code for Information Interchange code S (ASCII-S) protocol to wirelessly communicate with the second sensing and warning device.
[0011] In another exemplary embodiment, the radar of the first sensing unit and the radar of the second sensing unit operate at 57600 baud with a scanning frequency of 2 Hz.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
[0012] The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to reference like features and modules.
[0013] Fig. 1 illustrates an exemplary networked vehicle detection system and warning system, in accordance with an embodiment of the present invention.
[0014] Fig. 2 illustrates an exemplary diagram depicting a situation where the vehicle detection and warning system detects an incoming vehicle from an effective detection range, in accordance with an embodiment of the present invention.
[0015] Fig. 3 illustrates an exemplary system implementation block diagrams which function in a computing environment, in accordance with an embodiment of the present invention.
[0016] Fig. 4 illustrates a schematic block diagram of first and second sensing and warning devices, in accordance with an embodiment of the present invention.
[0017] Fig. 5 illustrates a flowchart depicting a method of providing warning to vehicles, in accordance with an embodiment of the present invention.
[0018] It should be appreciated by those skilled in the art that any block diagrams herein represent conceptual views of illustrative systems embodying the principles of the present disclosure. Similarly, it will be appreciated that any flow charts, flow diagrams, and the like represent various processes which may be substantially represented in computer readable medium and so executed by a computer or processor, whether or not such computer or processor is explicitly shown.
DETAILED DESCRIPTION
[0019] The various embodiments of the present disclosure provide a system and a method for detecting one or more incoming vehicles form an effective detection range and provide a combination of audio and visual warning which cannot be ignored in any weather condition.
[0020] In the following description, for purpose of explanation, specific details are set forth in order to provide an understanding of the present disclosure. It will be apparent, however, to one skilled in the art that the present disclosure may be practiced without these details. One skilled in the art will recognize that embodiments of the present disclosure, some of which are described below, may be incorporated into a number of systems.
[0021] However, the systems and methods are not limited to the specific embodiments described herein. Further, structures and devices shown in the figures are illustrative of exemplary embodiments of the present disclosure and are meant to avoid obscuring of the present disclosure.
[0022] Furthermore, connections between components and/or modules within the figures are not intended to be limited to direct connections. Rather, these components and modules may be modified, re-formatted or otherwise changed by intermediary components and modules.
[0023] References in the present disclosure to “one embodiment” or “an embodiment” mean that a particular feature, structure, characteristic, or function described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment.
[0024] The present disclosure directed towards providing a system and a method for detecting a plurality of incoming vehicles form an effective detection range and provide a combination of audio and visual warning to the driver of the vehicles which can not be ignored in any weather condition.
[0025] According to one of the embodiment, the present networked vehicle detection and warning system is provided. The system includes a vehicle detection and speed sensing elements. The system further includes a warning system that comprises an audio and visual components. The system is connected with power supply to make the electronics parts of the system active and functional. Further, the system is connected with a computing environment which have the interfaces to connect with multiple devices and to a radio interface.
[0026] According another embodiment, the present networked vehicle detection and warning system includes a radar, for example, a k-band 24 GHz frequency radar. The radar is capable of detecting vehicles and speed sensing with a precision that is unmatched by preset or conventional technologies, for example, ultrasound detection, laser detection, Induction and the like.
[0027] In the present embodiment, the present networked vehicle detection and warning system is implemented by transmitting an electromagnetic wave in 24 GHz frequency range (K-band), and measuring the frequency shift of the reflected electromagnetic wave. The frequency shift is caused by the Doppler effect of the moving target on the electromagnetic wave. As the relative speed between the radar sensor and the target increases, the detected frequency shift also increases, consequently enabling the radar sensor to precisely determine the target speed.
[0028] In one of the exemplary implementation, the effective detection range of the present networked vehicle detection and warning system may be 500 meters and speed range from 5 kmph to 330 KMPH. After signal processing, the data from the radar is available on an I/O interface such as RS232 interface which facilitate the transfer of data from the radar to the computing environment. Further, the present system use the standard communication protocol for establishing the communication. For example, the communication protocol may either be NMEA protocol (National Marine Electronics Association) which may be used for multiple vehicle in lane detection or ASCII-S protocol which may be deployed for single vehicle detection.
[0029] In the present exemplary implementation, the present networked vehicle detection and warning system may operate at 57600 baud and the scanning frequency of the radar may be set at 2 Hz to scan the road two times every second. For example, the ASCII-S protocol may be suitable for the direction and speed information for the single strongest detected target.
[0030] In one of the exemplary implementation, the warning system includes the visual components such as an LED of typical 12V or 3 watt that is the popular variety used in solar operated traffic lights and an audio component such as a car horn. The warning system uses a standard relay circuit.
[0031] Fig. 1 illustrates an exemplary vehicle warning system (100) which comprises sensing and warning devices (110). The system further includes a warning system that comprises an audio and visual components. The system is connected with power supply to make the electronics parts of the system active and functional. Further, the system is connected with a computing environment which have the interfaces to connect with multiple devices and to a radio interface which may be provided on 865 MHz radio frequency.
[0032] Fig. 2 illustrates an exemplary diagram (200) depicting a situation where first and second sensing and warning devices (110a and 110b) detect first and second vehicles (210a and 210b) from an effective detection range, according to an exemplary implementation of the present disclosure.
[0033] The present first sensing and warning device (110a) includes a radar (not shown in Fig. 2) that transmits an electromagnetic wave in 24 GHz frequency range (K-band) and measures the frequency shift of the reflected electromagnetic wave. As the relative speed between the radar sensor (not shown in Fig. 2) and the fist vehicle (210a) increases, the detected frequency shift also increases, consequently enabling the radar sensor to precisely determine the first vehicle (210a) speed. Once the speed of the first vehicle (210a) is detected, the same is communicated back to a warning unit (not shown) of the first sensing and warning device (110a). If the first vehicle (210a) is over the limit, it communicates with the second sensing and warning device (110b) at the other end. Then, the warning unit of the second sensing and warning device (110b) provides audio and visual warnings to alert the driver of the second vehicle (210b) to slow down and/or alternatively communicate that there is another vehicle approaching to the direction of second vehicle (210b). Further, the first and second sensing and warning devices (110a) and (110b) use the standard communication protocol for establishing the communication. For example, the communication protocol may either be NMEA protocol (National Marine Electronics Association) which may be used for multiple vehicle in lane detection or ASCII-S protocol which may be deployed for single vehicle detection.
[0034] Fig. 3 illustrates an exemplary block diagram (300) which function in a computing environment, according to an exemplary implementation of the present disclosure. The computing environment includes a system (302), a network (304) a plurality of user devices (306) including user devices (306a, 306b, 306c, 306d), a database (308), a memory (310), a processor (312), I/O interfaces (314), a plurality of modules (316), and the data (318).
[0035] The network (304) interconnects the user devices (306) and the database (308) with the system (302). The network (304) includes wired and wireless networks. Examples of the wired networks include a Wide Area Network (WAN) or a Local Area Network (LAN), a client-server network, a peer-to-peer network, and so forth. Examples of the wireless networks include Wi-Fi, a Global System for Mobile communications (GSM) network, and a General Packet Radio Service (GPRS) network, an enhanced data GSM environment (EDGE) network, 802.5 communication networks, Code Division Multiple Access (CDMA) networks, or Bluetooth networks.
[0036] In the present implementation, the database (308) may be implemented as enterprise database, remote database, local database, and the like. The database (308) may be located within the vicinity of the system (302) or may be located at different geographic locations as compared to that of the system (302). Further, the database (308) may themselves be located either within the vicinity of each other, or may be located at different geographic locations. Furthermore, the database (308) may be implemented inside the system (302) and the database (308) may be implemented as a single database.
[0037] In the present implementation, the system (302) includes one or more processors (312). The processor (312) may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuitries, and/or any devices that manipulate signals based on operational instructions. Among other capabilities, the at least one processor (312) is configured to fetch and execute computer-readable instructions stored in the memory (310).
[0038] The I/O interfaces (314) may include a variety of software and hardware interfaces, for example, a web interface, a graphical user interface, and the like. The I/O interface (314) may allow the system (302) to interact with a user directly or through the user devices (306). Further, the I/O interface (314) may enable the system (302) to communicate with other user devices or computing devices, such as web servers. The I/O interface (314) can facilitate multiple communications within a wide variety of networks and protocol types, including wired networks, for example, LAN, cable, etc., and wireless networks, such as WLAN, cellular, or satellite. The I/O interface (314) may include one or more ports for connecting a number of devices to one another or to another server.
[0039] The memory (310) may be coupled to the processor (312). The memory (310) can include any computer-readable medium known in the art including, for example, volatile memory, such as static random access memory (SRAM) and dynamic random access memory (DRAM), and/or non-volatile memory, such as read only memory (ROM), erasable programmable ROM, flash memories, hard disks, optical disks, and magnetic tapes.
[0040] Further, the system (302) includes modules (316). The modules (316) include routines, programs, objects, components, data structures, etc., which perform particular tasks or implement particular abstract data types. In one implementation, the module (316) includes a monitoring module (320), a detection module (322), a display module (324) and other modules (326). The other modules (326) may include programs or coded instructions that supplement applications and functions of the system (302).
[0041] Furthermore, in the present computing implementation, the monitoring module (320) is configured to monitor the sharp curves and bends of the roads. In one exemplary implementation, the monitoring module is implemented through a radar which may be operate at 57600 baud and the scanning frequency may be set up at 2 Hz to scan the road two times every second. ASCII-S protocol is suitable for the direction and speed information for the single strongest detected target.
[0042] Furthermore, in the present implementation, the detection module (322) is configured to detect the speed of the incoming module. In one exemplary implementation, the detection module is implemented through a radar that transmits an electromagnetic wave in 24 GHz frequency range (K-band), and measures the frequency shift of the reflected electromagnetic wave. As the relative speed between the radar sensor and the target incoming vehicle increases, the detected frequency shift also increases, consequently enabling the radar sensor to precisely determine the target incoming vehicle speed. Once the speed is detected, the same is communicated back to the system through the display module 324. The system through the display module 324 with the help of the detection module 322 alerts the driver of the target incoming vehicle through audio and visual alerts.
[0043] Fig. 4 illustrates a schematic block diagram of first and second sensing and warning devices (110a and 110b) according to an embodiment of the present invention.
[0044] The first sensing and warning device (110a) includes a first sensing unit (402a), a first processing unit (404a), and a first warning unit (406a). The first sensing and warning device (110a) also includes input devices (408a), memory (410a), and output devices (412a). The aforementioned units (402a-412a) are mutually interconnected.
[0045] The second sensing and warning device (110b) includes a second sensing unit (402b), a second processing unit (404b), and a second warning unit (406b). The second sensing and warning device (110b) also includes input devices (408b), memory (410b), and output devices (412b). The aforementioned units (402b-412b) are mutually interconnected.
[0046] The first and second sensing and warning devices (110a and 110b) are installed on the same vehicle path as depicted in Fig. 2.
[0047] The first sensing unit (402a) includes a radar (not shown) to transmit and receive electromagnetic signals. The radar transmits a first electromagnetic signal towards the first vehicle (210a). The first electromagnetic signal is reflected from the first vehicle (210a) and the reflected electromagnetic signal propagates towards the first sensing and warning device (110a). The radar receives the first reflected electromagnetic signal. Thereafter, the first sensing unit (402a) calculates the relative speed of the first vehicle (210a) based on a frequency shift of the first reflected electromagnetic signal. The first sensing unit (402a) generates and transmits a first sensing signal indicative of the relative speed of the first vehicle (210a).
[0048] The first processing unit (404a) receives the first sensing signal and compares the relative speed of the first vehicle (210a) with a predetermined threshold speed. The first processing unit (404a) generates and transmits a first warning signal when the relative speed of the first vehicle (210a) is greater than the predetermined threshold speed.
[0049] The first warning unit (406a) receives the first warning signal and displays a first visual warning on a display device based on the first warning signal. The first warning unit (406a) also, simultaneously, generates and transmits a first audio warning through a speaker based on the first warning signal. In an exemplary embodiment, intensities of the first visual warning and first audio warning are high, so that the driver of the first vehicle (210a) is sufficiently alerted even in loud or noisy environmental conditions.
[0050] Further, the second sensing and warning device (110b) receives the first warning signal sent by the first sensing and warning device (110a). Thereafter, the first visual warning is displayed on a display device of the second sensing and warning device (110b) based on the first warning signal, and, simultaneously, the first audio warning is generated and transmitted through a speaker of the second sensing and warning device (110b) based on the first warning signal.
[0051] Similarly, the second sensing unit (402b) of the the second sensing and warning device (110b) transmits a second electromagnetic signal towards the second vehicle (210b) on the vehicle path by a radar and receives a second reflected electromagnetic signal which is reflected from the second vehicle (210b). The second sensing unit (402b) calculates the relative speed of the second vehicle (210b) based on a frequency shift of the second reflected electromagnetic signal and generates and transmits a second sensing signal indicative of the relative speed of the second vehicle (210b).
[0052] The second processing unit (404b) receives the second sensing signal from the second sensing unit (402b) and compares the relative speed of the second vehicle (210b) with the predetermined threshold speed. When the relative speed of the second vehicle (210b) is greater than the predetermined threshold speed, the second processing unit (404b) generates and transmits a second warning signal.
[0053] The first sensing and warning device (110a) receives the second warning signal. Further, the first and second warning units (110a and 110b) display, on the respective display devices of the first and second sensing and warning devices (110a and 110b), a second visual warning based on the second warning signal, and, simultaneously, generate and transmit, through the respective speakers of the first and second sensing and warning devices (110a and 110b), a second audio warning based on the second warning signal.
[0054] Hence, the first and second visual alerts and the first and second audio alerts are provided to both the vehicles, the first and second vehicles (210a and 210b). This alerts the drivers of the first and second vehicles (210a and 210b) regarding incoming vehicles and thereby provides sufficient time and knowledge to the drivers to avoid collision between the first and second vehicles (210a and 210b).
[0055] Fig. 5 illustrates a flowchart depicting a method of providing warning to vehicles in accordance with an embodiment of the present invention.
[0056] At step 502, the first sensing unit (402a) of the first sensing and warning device (110a) transmits the first electromagnetic signal towards the first vehicle (210a).
[0057] At step 504, the first sensing unit (402a) of the first sensing and warning device (110a) receives the first reflected electromagnetic signal.
[0058] At step 506, the first processing unit (404a) of the first sensing and warning device (110a) calculates the relative speed of the first vehicle (210a).
[0059] At step 508, the first processing unit (404a) of the first sensing and warning device (110a) compares the relative speed of the first vehicle (210a) with the predetermined threshold speed.
[0060] At step 508, the first processing unit (404a) of the first sensing and warning device (110a) determines whether the relative speed of the first vehicle (210a) is greater than the predetermined threshold speed. If yes, the first sensing and warning device (110a) executes step 502.
[0061] If no, at step 510, the first warning unit (406a) of the first sensing and warning device (110a) provides the first visual waring and the first audio warning.
[0062] At step 512, the second warning unit (406b) of the second sensing and warning device (110b) provides the first visual waring and the first audio warning.
[0063] The foregoing description of the invention has been set merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to person skilled in the art, the invention should be construed to include everything within the scope of the disclosure.

,CLAIMS:I/We claim:

1. A vehicle warning system comprising:
a first sensing and warning device installed on a vehicle path, said first sensing and warning device comprising:
a first sensing unit configured to:
transmit, by a radar, a first electromagnetic signal towards a first vehicle on the vehicle path,
receive, by the radar, a first reflected electromagnetic signal which is reflected from the first vehicle,
calculate a relative speed of the first vehicle based on a frequency shift of the first reflected electromagnetic signal, and
generate and transmit a first sensing signal indicative of the relative speed of the first vehicle;
a first processing unit connected to the first sensing unit, said first processing unit configured to:
receive the first sensing signal from the first sensing unit,
compare the relative speed of the first vehicle with a predetermined threshold speed, and
generate and transmit a first warning signal when the relative speed of the first vehicle is greater than the predetermined threshold speed; and
a first warning unit connected to the first processing unit, said first warning unit configured to:
receive the first warning signal from the first processing unit,
display, on a display device, a first visual warning based on the first warning signal, and, simultaneously, generate and transmit, through a speaker, a first audio warning based on the first warning signal; and
a second sensing and warning device installed on the vehicle path in communication with the first sensing and warning device, said second sensing and warning device comprising:
a second warning unit configured to:
receive the first warning signal from the first sensing and warning device,
display, on a display device, the first visual warning based on the first warning signal, and, simultaneously, generate and transmit, through a speaker, the first audio warning based on the first warning signal.

2. The vehicle warning system as claimed in claim 1, wherein the second sensing and warning device further comprises:
a second sensing unit configured to:
transmit, by a radar, a second electromagnetic signal towards a second vehicle on the vehicle path,
receive, by the radar, a second reflected electromagnetic signal which is reflected from the second vehicle,
calculate a relative speed of the second vehicle based on a frequency shift of the second reflected electromagnetic signal, and
generate and transmit a second sensing signal indicative of the relative speed of the second vehicle; and
a second processing unit connected to the second sensing unit, said second processing unit configured to:
receive the second sensing signal from the second sensing unit,
compare the relative speed of the second vehicle with the predetermined threshold speed, and
generate and transmit a second warning signal when the relative speed of the second vehicle is greater than the predetermined threshold speed.

3. The vehicle warning system as claimed in claim 2, wherein the first sensing and warning device is configured to receive the second warning signal,
and wherein the first and second warning units are further configured to display, on the respective display devices of the first and second sensing and warning devices, a second visual warning based on the second warning signal, and, simultaneously, generate and transmit, through the respective speakers of the first and second sensing and warning devices, a second audio warning based on the second warning signal.

4. The vehicle warning system as claimed in any one of the preceding claims 1-3, wherein the first and second electromagnetic signals are in a frequency range of K-Band (18 to 26 GHz).

5. The vehicle warning system as claimed in any one of the preceding claims 1-4, wherein the first sensing and warning device uses National Marine Electronics Association (NMEA) protocol or American Standard Code for Information Interchange code S (ASCII-S) protocol to wirelessly communicate with the second sensing and warning device.

6. The vehicle warning system as claimed in any one of the preceding claims 1-5, wherein the radar of the first sensing unit and the radar of the second sensing unit operate at 57600 baud with a scanning frequency of 2 Hz.

7. A method for providing warning to vehicles, the method comprising:
transmitting, by a radar of a first sensing and warning device installed on a vehicle path, a first electromagnetic signal towards a first vehicle on the vehicle path;
receiving, by the radar of the first sensing and warning device, a first reflected electromagnetic signal which is reflected from the first vehicle;
calculating, by the first sensing and warning device, a relative speed of the first vehicle based on a frequency shift of the first reflected electromagnetic signal;
comparing the relative speed of the first vehicle with a predetermined threshold speed;
generating and transmitting a first warning signal, by the first sensing and warning device, when the relative speed of the first vehicle is greater than the predetermined threshold speed;
displaying, on a display device of the first sensing and warning device, a first visual warning based on the first warning signal, and, simultaneously, generating and transmitting, through a speaker of the first sensing and warning device, a first audio warning based on the first warning signal;
receiving the first warning signal at a second sensing and warning device; and
displaying, on a display device of the second sensing and warning device, the first visual warning based on the first warning signal, and, simultaneously, generating and transmitting, through a speaker of the second sensing and warning device, the first audio warning based on the first warning signal.

8. The method as claimed in claim 8, further comprising:
transmitting, by a radar of the second sensing and warning device, a second electromagnetic signal towards a second vehicle on the vehicle path;
receiving, by the radar of the second sensing and warning device, a second reflected electromagnetic signal which is reflected from the second vehicle;
calculating a relative speed of the second vehicle based on a frequency shift of the second reflected electromagnetic signal;
comparing the relative speed of the second vehicle with the predetermined threshold speed; and
generating and transmitting a second warning signal, by the second sensing and warning device, when the relative speed of the second vehicle is greater than the predetermined threshold speed.

9. The method as claimed in claim 8, further comprising:
receiving the second warning signal at the first sensing and warning device;
displaying, on the display device of the second sensing and warning device, a second visual warning based on the second warning signal, and, simultaneously, generating and transmitting, through a speaker of the second sensing and warning device, a second audio warning based on the second warning signal; and
displaying, on the display device of the first sensing and warning device, the second visual warning based on the second warning signal, and, simultaneously, generating and transmitting, through the speaker of the first sensing and warning device, the second audio warning based on the second warning signal.

10. The method as claimed in any one of the preceding claims 7-9, wherein the first and second electromagnetic signals are in a frequency range of K-Band (18 to 26 GHz).

11. The method as claimed in any one of the preceding claims 7-9, wherein the first sensing and warning device uses National Marine Electronics Association (NMEA) protocol or American Standard Code for Information Interchange code S (ASCII-S) protocol to wirelessly communicate with the second sensing and warning device.

12. The method as claimed in any one of the preceding claims 7-9, wherein the radar of the first sensing unit and the radar of the second sensing unit operate at 57600 baud with a scanning frequency of 2 Hz.

Dated this 05th day of May, 2017

For TLG INDIA PVT. LTD.,
By their Agent,

(GIRISH VIJAYANAND SHETH)
Patent Agent No. IN/PA 1022
KRISHNA & SAURASTRI ASSOCIATES LLP