FORM 2
THE PATENT ACT, 1970,
(39 OF 1970)
&
THE PATENTS RULE, 2003
COMPLETE SPECIFICATION
(SEE SECTION 10; RULE 13)
"VEHICLE COMMUNICATION SYSTEM"
MAHINDRA & MAHINDRA LIMITED
AN INDIAN COMPANY,
R&D CENTER, AUTOMOTIVE SECTOR,
89, M.I.D.C, SATPUR,
NASHIK - 422 007,
MAHARASHTRA, INDIA.
THE FOLLOWING SPECIFICATION DESCRIBES THE NATURE OF THE INVENTION AND MANNER IN WHICH IT IS TO BE PERFORMED

FIELD OF THE PRESENT INVENTION:-
The present invention is related to the field of vehicle communication system. More particularly, the present invention is related vehicle communication system in accident auto messaging to the control number and /or vehicle to vehicle emergency alert system that alerts the other vehicle during emergency situation through Bluetooth technology.
BACKGROUND OF THE PRESENT 1NVENTION:-
In the fast and busy life of city, many vehicle drivers are ignorant to ensure that doors are completely closed and locked, seat belt is fasten and like safety precautions are taken. It is the general scene on Indian roads that the rear door of the vehicle is open, child is putting the head out of the WINDOW and like. Suppose a vehicle is moving on the road with door not closed or kid letting her head out or tire puncture or like situations, the communication can be made to the driver by overtaking the vehicle to inform the emergency, but this action may involve a risk for drivers of both the vehicles.
If the nearby vehicle running on the road is in such situations and driver continues to drive the vehicle without realizing the risk involved, vehicle to vehicle communication system of the present invention alerts the driver of the other system and risk of accident can be avoided. Vehicle to vehicle system of the present invention is comfortable enough for drivers of both the vehicles and does not divert the concentration on road / traffic.
OBJECT OF INVENTION:-
It is an object invention to provide a vehicle communication system If a vehicle is meet with an accident the person need to convey this message to the concern person like police, Hospital, relatives etc automatically.
It is another object of invention to provide a vehicle communication system to alert driver of vehicle in case nearby vehicle is in an emergency situation (e.g. back door open, child is putting head out).

It is also object of the invention to provide a vehicle communication system having comfortable alerting system in view of concentration of road/traffic
It is also object of invention to provide a vehicle communication system to alert drivers of vehicle in case vehicle closure to each other to avoid the accident.
STATEMENT OF INVENTION:-
Accordingly the invention provides a Vehicle communication system comprises a microprocessor controller main unit in the vehicle dash board having modular card for mounting vehicle identity card; blue tooth facility is made in the said main unit; a memory unit provided in the said main unit for storing vehicle dimension registration number, contact phone number and emergency voice mail; a microphone is fitted at driver side connected to the said main unit; a display unit with input means provided to the said main unit.; one or more crash sensor, connected to the said main unit, provided on the vehicle out side body to sense collusion /crash on the any part of vehicle body; an embedded software is loaded in the said main unit as per the algorithms herein illustrated in the flow diagrams of figures so that
• when any collusion/ crash is detected by the sensor the an emergency message to emergency telephone number is sent.
• a communication to paired vehicle to alert message for safety and the said message saved in the said memory.
DESCRIPTION OF THE FIGURES:-
Figure 1A shows the block diagram of the communication system installed in the vehicle;
Figure 1 B shows a block diagram of touch screen;
Figure 2 shows the different vehicles in communication network of the system in accordance with the present invention;

Figure 3 shows the working methodology of the vehicle to vehicle communication system in accordance with the present invention;
Figure 4 shows the flow diagram for alerting vehicles when distance between them is reduced to set value.
Fig 5 shows the flow diagram working of vehicle communication system when collision/crash occurred.
DETAILED DESCRIPTION OF THE PRESENT INVENTION. -
Referring to Fig. 1, vehicle to Vehicle Emergency system consists of a main unit, a microprocessor, (1) which contain the Vehicle identity module card (VIM) Just like Subscriber Identity Module (SIM) cards in mobile, it will mounted in the vehicle dash board. It also contains the short range communication (Bluetooth) unit. For both the Vehicle registration number will be the vehicle identity module number, once vehicle is started, this system will get started and it works with the GSM or CDMA network and the short range communication system will automatically get pair with all the nearby vehicle short range communication system.
In the display Touch screen (2) the connected all vehicle registration number will display. The display position of the vehicles in the touch screen will be according to the ratio of the distance between the nearby vehicle blue tooth connection. When it get paired it will share the vehicle dimension and the vehicle registration number which is pre stored in the vehicle memory unit (3).
In the memory unit (3) other than the vehicle dimension, phone numbers, other vehicle dimension, pre recorded emergency voice mail etc will get stored.
In the display screen side a keypad available which can be used for dialing the number. Once we touch the keypad the keypad numbers will display in the touch screen. It also contain the phone book which will display the stored

phone numbers and their names, using that we can communicate with that concern person. In the display touch screen one icon will be there called "emergency".
In that few emergency number will get stored and in emergency cases the vehicle will send the pre recorded voice emergency message like "vehicle is in emergency "to the emergency numbers. It can also be operate manually by pressing the emergency icon the number which we stored will display in the touch screen by selecting the number we can communicate with that number through GSM or CDMA network at the time of emergency.
A Microphone (5) placed conveniently on the driver side sun visor helps to record the voice message. This system also has an audio storage unit (3), where the voice (alert) message captured through the microphone (5) gets converted into a useable format and saved. This saved audio file, is sent to the desired vehicle selected through the touch screen. Speakers (4) used for the vehicle music system is as well used to play the voice message. Accept / ON button (6) and Reject button (7) mounted on the steering wheel helps for easy accessibility to the driver for controlling this system. If the Accept / ON button (6) is continuously pressed for 2 seconds, it will switch on the Microphone (5). A beep sound intimates the driver to start the voice registration. The driver can record his voice up to 15 seconds duration. A second beep sound at the end of 15 seconds intimates that the voice has been saved.
Referring to Fig. 2, user B and User C vehicles are pair with the User A vehicle. Here User A is sending alert to the User B as explained in Figure 3.
The Bluetooth system range is up to 100 meters. In the flowchart shown below, the User A is paired with both User B and User C. Consider that User B is in an emergency situation (User B is not alert about this situation). User A is alerting User B though the Vehicle to Vehicle Emergency Alert System.

In this scenario, the User A sends an alert to User B. Once the User B comes within the Bluetooth range it will automatically get paired with the User A. Pressing the Accept button for 2 seconds activates the Microphone. The Driver can record his voice for up to 15 seconds and is saved, as a useable format, automatically in the Audio storage unit. With the help of the Touch Screen display, the User B registration number can be selected. This will send the voice message to the User B through Bluetooth.
If the User B wants to accept the message, it can be accepted by pressing the ACCEPT / ON button on the steering wheel. This will receive the message through the Bluetooth and will play the message automatically through the speakers. If User B doesn't want to accept, it can be done by pressing the REJECT button on the steering wheel. This will disconnect the communication.
Bluetooth is a standard and communications protocol primarily designed for low power consumption, with a short range (power-class-dependent: 1 meter, 10 meters, 100 meters) based on low-cost transceiver microchips in each device. Bluetooth makes it possible for these devices to communicate with each other when they are in range. Because the devices use a radio (broadcast) communications system, they do not have to be in line of sight of each other. In near future, if the wireless data transfer speed is improved, this system can be used as a live interaction / communication device. If the range of the Bluetooth systems is improved, the connectivity range of each vehicle will be increased.
The main unit a microprocessor is provided with an embedded software programmed as per the algorithms illustrated in the figures 3 to 5.
Two sensors (8) will kept at front RH and LH suspension area. Two sensors (8) will kept at the B pillar area. Once collision happened this sensors will send signal to the main unit, by using the pre recorded voice message and the emergency number in memory unit the main unit will send the message to the concern person

Working:
Once collision happened immediately the sensors detect it and send signal to the main unit. Main unit will collect the pre recorded emergency voice message and the emergency number from the memory unit and send this message to the emergency numbers through GSM or CDMA connection. In the shown diagram User B and User C vehicles are pair with the User A vehicle. Here User A is sending alert to the User B the flowchart of the process is shown below.
The Bluetooth system range is up to 100 meters. In the flowchart shown below, the User A is paired with both User B and User C. Consider that User B is in an emergency situation (User B is not alert about this situation). User A is alerting User B though the Vehicle to Vehicle Emergency Alert System Referring to figure 3 the flow diagram is shown performing communication between vehicle A and vehicle B. The algorithms of the embedded software is based on this flow diagram.
Referring to figure 4 the flow diagram shows the working of communication system if vehicle distance is less than the set value and sends alert. The algorithms of embedded software is based on this flow diagram. Referring to figure 5 shows flow diagram of vehicle communication system if vehicle is having collosion/crash. A pre recorded message is automatically sent to control telephone. The algorithms of embedded software is based on this flow diagram.
ADVANTAGES OF THE PRESENT INVENTION:-
• Using this system we can communicate with the other vehicle, provided that both the vehicles are equipped with this system.
• This system also helps for a communication through a Bluetooth enabled mobile phone.
• This technology will serve its purpose even in remote areas, even where Telecom services are not available.

•• Customer will feel a sense of happiness by helping fellow vehicles. •• This system can be used by police in emergency situations.
There is also scope for following features with implementation of invention in the vehicle communication system.
•• In near future, we can use to read the sign boards, signals, path
finding etc. •• It also used to open the vehicle if the key is lost(using password in
that system) •• if the range of the Bluetooth systems is improved, the connectivity
range of each vehicle will be increased, In future music system, internet etc can also incorporate in it. in future by using this system the vehicle can operate from the
outside. •• In future it can also use as a black box of the vehicle, by that we
can get the accident report. •• In theft cases we can find the vehicle Using this.

WE CLAIM:
1. Vehicle communication system comprises a microprocessor controller
main unit in the vehicle dash board having modular card for mounting
vehicle identity card; blue tooth facility is made in the said main unit; a
memory unit provided in the said main unit for storing vehicle dimension
.registration number, contact phone number and emergency voice mail; a
microphone is fitted at driver side connected to the said main unit; a
display unit with input means provided to the said main unit.; one or more
crash sensor, connected to the said main unit, provided on the vehicle out
side body to sense collusion /crash on the any part of vehicle body; an
embedded software is loaded in the said main unit as per the algorithms
herein illustrated in the flow diagrams of figures so that
• when any collusion/ crash is detected by the sensor then an emergency message to emergency telephone number is sent.
• a communication to paired vehicle to alert message for safety and the said message saved in the said memory.

2. Vehicle communication system as claimed in claim 1 wherein pair of switches connected to microphone through said main unit for accept/on and reject communication with paired vehicle.
3. Vehicle communication system as claimed in claims 1 and 2 wherein the said display is touch screen display with key pad therein.
4. Vehicle communication system as claimed in above claims and as herein described with reference to the drawings of the accompanying specification.