DESCRIPTION

The invention relates to a Bluetooth technology in automotive applications, in particular to a Bluetooth in two wheeler motor vehicle indicator, horn and ignition control system application.Bluetooth operates in the range of 2400-2483.5 MHz (including guard bands). This is in the globally unlicensed (but not unregulated) Industrial, Scientific and Medical (ISM) 2.4 GHz short-range radio frequency band. Bluetooth uses a radio technology called frequency-hopping spread spectrum. The transmitted data are divided into packets and each packet is transmitted on one of the 79 designated Bluetooth channels. Each channel has a bandwidth of I MHz. Bluetooth 4.0 uses 2 MHz spacing which allows for 40 channels. The first channel starts at 2402 MHz and continues up to 2480 MHz in 1 MHz steps. It usually performs 1600 hops per second, with Adaptive Frequency-Hopping (AFH) enabled.Bluetooth is a packet-based protocol with a master-slave structure. One master may communicate with up to seven slaves in a piconet; all devices share the master's clock. Packet exchange is based on the basic clock, defined by the master, which ticks at 312.5 us intervals. Two clock ticks make up a slot of 625 (is; two slots make up a slot pair of 1250 us. In the simple case of single-slot packets the master transmits in even slots and receives in odd slots; the slave, conversely, receives in even slots and transmits in odd slots. Packets may be 1, 3 or 5 slots long, but in all cases the master transmit will begin in even slots and the slave transmit in odd slots.

Fig. 1 explains that the android mobile from the user is used for searching for available Bluetooth devices around the range of 20m. The slave device is identified by the android mobile and pairing with the slave device is done by the 4 digifpin code authentication.

Fig. 2 explains that the android mobile has an application to send the data to the slave Bluetooth unit using the command initialized by the user.

Fig. 3 explains that the Bluetooth module acts as the receiving module and receives command from the android mobile. An application is installed in the android mobile which is used to connect with the Bluetooth module fixed in the two wheeler vehicle and send the data to the Bluetooth module when a button is pressed. The data received by the Bluetooth module is sent to the controller for processing. A microcontroller which processes the received data according to the program installed in it sends the signal to turn on the relays. The common terminal of the relay is connected to the positive terminal of the battery. The coil terminal is connected to the output pins of the microcontroller. The normally open terminal is connected to the horn, indicator and ignition switch of the vehicle. Four independent relays are used to control the indicator, horn, ignition key and ignition switch avoiding interference.

BRIEF DESCRIPTION
This invention uses Bluetooth technology for the control of ignition switch, indicator and horn of the two wheeler. The user has an android mobile which has an application that could send a command to the slave device using Bluetooth technology. A Bluetooth module is fixed in the vehicle which could receive data from the android mobile. The unit which is fixed in the vehicle is powered using the battery of the vehicle. The android mobile first identifies the slave Bluetooth device in the vehicle and pairs with the device using the four digit pin code. After pairing with the slave device, the user can send command to the Bluetooth device that is fixed in the vehicle using the application provided in the android mobile. There is a microcontroller and four relays are fixed in the unit that is placed inside the vehicle. The microcontroller is programmed in such a way such that it responds only to the predefined commands from the android mobile and turn on the corresponding relays. The relays are connected to the ignition switch, indicators and horn of the vehicle. So, by turning on the relay, we can control the ignition, indicators and horn of the vehicle.

PROGRAM OF THE MICROCONTROLLER

void setup()
Serial.begin(9600);
pinMode(10,OUTPUT);
pinMode(9,OUTPUT);
pinMode(8,OUTPUT);
pinMode(7,OUTPUT);
void ioop()
{ if(Serial.available())
intval = Serial.read();
if(val= 105
digitalWrite(9,HIGH);
delay(600); digitalWrite(8,HIGH); delay(600); digitalWrite(8,L0W);
if(val==l 15)
digitalWrite(9,L0W);
if(val== 104)
digitalWrite(10,HIGH); .
digitalWrite(7,HIGH);
delay(500);
digitalWrite(10,LOW);
digitalWrite(7,LOW);

APPLICATIONS

1. WIRELESS IGNITION
The wireless ignition provides a method for ignition of the vehicles before reaching the vehicle and at a certain distance of 20 m from the vehicle. It also enables the saving of the fuel of vehicle by utilizing the proper amount of time for the ignition switch to be pressed. Moreover it enables more fuel efficiency and thus reduces the wastage of fuel and battery during prolonged press of ignition switch.

2. IDENTIFICATION OF VEHICLE
The Bluetooth device fixed in the vehicle helps us to identify the vehicle by using the application in the android mobile. The identification is done by using the indicators and the horn so that one can identify the vehicle when it is covered by a crowd of vehicles.

3. SAFETY OF THE VEHICLE
This method is safer when compared with the conventional key ignition system. Since the key can be duplicated or damaged, there are a lot of chances for the theft of the vehicle. But in this method, we use a pin for pairing with the Bluetooth device in the vehicle so anyone other than the owner cannot access the vehicle without the proper pairing code. The enables more safety for the vehicles and prevents theft of the vehicle.

CONCLUSION

The objective of the present invention is to provide a wireless and safety way to control the ignition switch of the two wheeler vehicle using Bluetooth technology. This method used a pin to pair with the device that is fixed in the vehicle and an android phone with the required software only can access the device that is fixed in the vehicle which in turn controls the ignition of the vehicle and the indicators and horn of the vehicle for the identification of the vehicle. This method provides more safety way for igniting the vehicle by avoiding the conventional key for igniting the vehicle.

I claim

1. A Bluetooth technology in the two wheeler vehicle ignition and
identification system application comprising:
A control unit in communication with at least one control device, wherein said control unit is capable of being in communication with an android mobile phone with inbuilt Bluetooth.

2. According to Claim T wherein the Bluetooth technology in the two wheeler
vehicle ignition and identification systems, characterized in that it comprises
the following steps:

1. The owner has an android mobile with Bluetooth and the application for sending commands to Bluetooth slave that is fixed in the vehicle.

2. The android mobile initiates the connection with the vehicle Bluetooth for pairing which is followed by a four digit pin code for pairing.

3. The android mobile receives the response from the Bluetooth that is fixed in the vehicle.

4. The android mobile sends a control command through Bluetooth using the application installed in it to control the ignition switch, horn and indicators.

5. Bluetooth device accepts the signal from the android phone and controls the ignition switch, horn and indicators.