FIELD OF INVENTION
The present invention relates to a device and a method for safety of motorcyclists. In particular, the present invention relates to a device and a method for preventing motorcycle from starting the ignition if the riders are not wearing the helmet.
BACKGROUND
Conventionally, the automobiles have no consideration for this aspect of safety of the rider. Whether a rider is wearing a protective headgear or not the automobile is not equipped with any mechanism that can identify this. Even the aspect of safety of the pillion rider cannot be overlooked as he is equally unsafe in an event of an accident. In some countries, wearing a protective headgear is comparable to wearing seatbelts, regulated as part of the street ordinances as general safety measure. Mostly motorcycle rider wears a protective headgear because it is enforced by law.
The law requires the two wheeler riders to wear a protective headgear in order to protect their head in case of any blows received during road accidents. Having to protect the head against hard impacts, such headgears must be very strong and this inevitably makes them heavy and bulky. Many people instinctively avoid wearing a protective headgear as it adversely affects their hear-do and this unwillingness must not be underestimated.
In some conventional mechanisms, a provision for this aspect of rider safety is provided by the way of a switch which is placed on the helmet holder and another below the rider's seat. A circuit is developed such that if the helmet is in the helmet holder and the rider tries to start the bike, the circuit produces an alarm and once the helmet is out of the helmet holder the sound goes off. However, it should be noticed that this mechanism does not ensure that the rider is wearing the helmet or not which is for safety consideration.

In few conventional mechanisms, the system is designed to check safety of the driver of the motorcycle however the safety of pillion rider neglected. If the pillion rider is not wearing a helmet, the motorcycle will start.
Therefore, there is a need to overcome all these issues and develop a device for safety of motorcycle riders.
SUMMARY OF THE PRESENT INVENTION
The present invention has been carried out in order to overcome the above mentioned circumstances and has an object to overcome the above problems and to provide solution. An object of the present invention therefore is to ensure that the vehicle does not start until the driver and the pillion rider are actually wearing the helmet.
A further object of the present invention is to ensure that the driver and the pillion rider wear protective headgear not only during the start of the two-wheeler but through out the journey.
To achieve this purpose, the protective headgear is mounted with a transmitting unit. The transmitting unit continuously transmits radio frequency signals which are received by the receiving unit mounted on the motorcycle. The transmitted radio signals consist of a functional specific code which is unique for a particular headgear. The unique functional specific code is identified and processed by the receiver. The receiver is fiirther connected to input of ignition switch, which then closes the circuit and lets the current flow, allowing the vehicle to start.
Both the transmitter and the receiver have been made and attached to the vehicle in such fashion that if there is no RF signal available it will result in permanent ignition off. This circuit can also be attached in series with the ignition switch for those motorcycles where engine kill switch is attached to the CDI circuit.

BRIEF DESCRIPTION OF THE DRAWINGS
The features of the present invention are set forth with particularity in the appended claims. The invention itself, together with further features and attended advantages, will become apparent from consideration of the following detailed description, taken in conjunction with the accompanying drawings. One or more embodiments of the present invention are now described, by way of example only, with reference to the accompanied drawings wherein like reference numerals represent like elements and in which:
Figure 1 illustrates a side view of the motorcyclist wearing a helmet riding a motorcycle showing the helmet mounted with transmitter & receiver in the right handle bar switch having kill switch function or any other means of the motorcycle.
Figure 1A shows transmitter mounted in the helmet behind the head of rider.
Figure 2 illustrates a block diagram of the safety device in accordance with one embodiment of the present invention.
Figure 3 shows a functional block diagram showing the interactive components of a representative transmitter attached in the helmet according to one embodiment of the present invention.
Figure 4 illustrates a functional block diagram showing the interactive components of a representative receiver in accordance with one embodiment of the present invention.
Figure 5 illustrates a proto type of a vehicle for the present invention.
DETAILED DESCRIPTION
Accordingly, the present invention provides a system for safety of motorcyclists comprising a load sensor located on the motorcycle for sensing the load of the pillion rider, a sensing unit located on the motorcycle configured to sense the signal from the

load sensor, a first transmitter unit located in a first head gear configured to generate the first output signal, a second transmitter unit located in a second head gear configured to generate the second output signal, a receiving unit located on the motorcycle configured to receive output signals generated from either the first headgear or both of the first and second headgears and a control unit for processing signals received by the receiving unit; said control unit configured to send a command signal for starting the motorcycle.
In another embodiment of the present invention, the first transmitter unit comprises an infrared sensor so as to sense signal transmitted from an infrared unit located on the motorcycle.
In yet another embodiment of the present invention, the first transmitter unit and the infrared unit are in continuous communication with each other.
In still another embodiment of the present invention, the first transmitter unit transmits a unique identification number to the receiving unit located on the motorcycle.
In one embodiment of the present invention, the load sensor transmits a signal to sensing unit on sensing the load of the pillion rider.
In another embodiment of the present invention, the sensing unit triggers the receiving unit to receive signal from the second transmitting unit upon receiving the signal from the load sensor.
In yet another embodiment of the present invention, the first transmitter unit and second transmitter unit transmits a unique identification number to the receiving unit located on the motorcycle.
In still another embodiment of the present invention the control unit processes signal received by a receiving unit; the said signal comprising output signal received either from first headgear or from both of the first and the second headgear.

In one embodiment of the present invention, the control unit is communicatively coupled to a learning unit which identifies a unique identification number of any either the first headgear or the second headgear when used in any other headgear.
In another embodiment of the present invention, responsive to identifying a unique identification number and switching a learn mode switch in the learning unit, the control unit generates a command signal for starting the motorcycle.
In one embodiment of the present invention, the method comprises a method for generating a first output signal identifying the presence of the first headgear, generating a second output signal identifying the presence of the second headgear; receiving either first or both first and second output signals at the receiving unit, and processing the signal thus received by the receiving unit to generate a command signal for starting the motorcycle.
In another embodiment of the present invention, the control unit processes signal received by a receiving unit; the said signal comprising output signal received either from first headgear or from both of the first and the second headgear.
In yet another embodiment of the present invention, the learning unit identifies a unique identification number of any either the first headgear or the second headgear when used in any other headgear.
In still another embodiment of the present invention, responsive to identifying a unique identification number and switching a learn mode switch in the learning unit, the control unit generates a command signal for starting the motorcycle.
The present invention relates to a device and a method for safety or motorcyclists. In particular, the present invention relates to a device and a method for preventing motorcycle from starting the ignition if the riders are not wearing the helmet.

Figure 1 illustrates a side view of the motorcyclist wearing a helmet riding a motorcycle showing the helmet mounted with transmitter & receiver in the right handle bar switch having kill switch function or any other means of the motorcycle.
In one embodiment, the rider (102) is wearing a motorcycle helmet (101) riding a motorcycle (103). The motorcycle helmet (101) includes a transmitter mounted on the helmet (101) above the head of the rider (102) and another transmitter is mounted above the head of a pillion rider and the receiver is preferably mounted to the motorcycle (103). When the rider (102) and the pillion rider wear helmet (101), the transmitter (104) in their respective helmets send a signal that receiver unit mounted on motorcycle (103). The receiver upon receiving the signal from the transmitters forces the current to flow in the circuit of the motorcycle and thereby allowing the vehicle to start.
In accordance with one embodiment of the present invention, the transmitter (104) can transmit a signal in response to a current flow in motorcycle circuit such as Ignition circuit. Engine kill circuit etc. All circuits for the motorcycle (103) is monitored by the transmitter (104), allowing for the transmission of a signal. The receiver in the motorcycle (103) is capable of receiving the signal transmitted by transmitter (104) and responding to each signal by selectively energizing the circuit.
Figure 2 illustrates a block diagram of the safety device in accordance with one embodiment of the present invention.
In one embodiment, a load sensor (206) is located on the motorcycle for sensing the load of the pillion rider. A sensing unit (207) located on the motorcycle configured to sense the signal from the load sensor (206). A first transmitter unit (201) located on the first head gear generates the first output signal and a second transmitter unit (202) located on the second head gear configured to generate the second output signal. A receiving unit (203) located on the motorcycle is configured to receive output signals generated from either the first headgear or both of the first and second headgears and a control unit (204) for processing signals received by the receiving unit (203), said control unit is configured to send a command signal for ignition start of the motorcycle.

In case of theft or breakage or misplacement of the headgear, there is a possibility of using a new headgear having the same transmitter unit (202) with the same unique identification number. In one embodiment, the system comprises a learning unit (208) operatively coupled to the control unit (204) for identifying a unique identification number of any either the first headgear or the second headgear when replaced by the new headgear. The learning unit (208) comprises a LEARN mode switch, which is pressed by the rider to enable the transmitter unit (202) to send unique identification number so that the rider can start his vehicle by using the new headgear.
The safety consideration for pillion rider is as equally important as the safety of driver of motorcycle. In one embodiment, a load sensor is placed in/below foot rests of pillion rider which gives signal to the receiver to check for helmet of the pillion rider along with driver of the motorcycle.
Figure 3 shows a functional block diagram showing the interactive components of a representative transmitter attached in the helmet according to one embodiment of the present invention.
In one embodiment, a transmitter includes an encoder (302), a modulator (303), a high frequency source (305), an amplifier (304) and an antenna (306). Once the microcontroller (301) generates the digital input which is sent to a modulator through encoder with its source frequency and high frequency source gives its carrier frequency to the modulator, preferably the transmission signal is a radio frequency signal, then modulator (303) modulates that digital input or frequency and transmit to the antenna (406). So, the transmitted signal is received by the antenna (406) of receiver.
Figure 4 illustrates a functional block diagram showing the interactive components of a representative receiver in accordance with one embodiment of the present invention. In one embodiment, the receiver includes a demodulator (402), a decoder (403), a microcontroller (405) and an antenna (406). The receiver antenna (406) receives the signal from transmitter. The antenna (406) receives transmitting signal containing the specific digital input to the demodulator (402). The demodulator (402) extracts that input from signal & sends to the microcontroller (405) through decoder (403).

When rider wears the helmet, then the transmitter circuit sends a signal to receiver unit which is mounted in the motorcycle. Once the receiver starts receiving signal from transmitter that helmet is worn by rider, the receiver gives such input to microcontroller. The output from microcontroller is then given to the motorcycle circuit such as ignition circuit, engine kill circuit, and in MPFI system etc. which closes the circuit and allows the current to flow with vehicle start.
Figure 5 illustrates a proto type of a vehicle for the present invention.
In one embodiment, if the rider is riding the motorcycle without helmet, then the vehicle
will not start and when rider wears helmet, the vehicle gets started.
ADVANTAGES OF PRESENT INVENTION:
1. Motorcycle helmet is used as a protective gear for the rider's head to avoid severe injuries brought about by accidents.
2. It certainly reduces the severity of the impact on the brain.

We Claim:
1. A system for ensuring the safety of motorcyclists comprising:
a load sensor located on the motorcycle for sensing the load of a pillion rider;
a sensing unit located on the motorcycle configured to sense the signal received from the load sensor;
a first transmitter unit located in a first head gear configured to generate a first output signal;
a second transmitter unit located in a second head gear configured to generate a second output signal;
a receiving unit located on the motorcycle configured to receive output signals generated from either the first headgear or both of the first and second headgears; and
a control unit for processing signals received by the receiving unit; said control unit configured to send a command signal for starting the motorcycle.
2. The system as claimed in claim 1, wherein the first transmitter unit comprises an infrared sensor for sensing a signal transmitted from an infrared unit located on the motorcycle.
3. The system as claimed in claim 2, wherein the first transmitter unit and the infrared unit are in continuous communication with each other.
4. The system as claimed in claim 1 and 2, wherein the first transmitter unit transmits a unique identification number to the receiving unit located on the motorcycle.
5. The system as claimed in claim 1, wherein the load sensor transmits a signal to sensing unit on sensing the load of the pillion rider.
6. The system as claimed in claim 1 and 5, wherein the sensing unit triggers the receiving unit to receive signal from the second transmitting unit upon receiving the signal from the load sensor.

7. The system as claimed in claims 1 to 3, wherein the first transmitter unit and second transmitter unit transmits a unique identification number to the receiving unit located on the motorcycle.
8. The system as claimed in previous claims wherein the control unit processes signal received by the receiving unit; the said signal comprising output signal received either from first headgear or from both of the first and the second headgear.
9. The system as claimed in claim 1, wherein the control unit is communicatively coupled to a learning unit which identifies a unique identification number of either the first headgear or the second headgear when replaced by any other headgear.
10. The system as claimed in claim 9, wherein the learning unit comprises a learn mode switch, which when pressed enables the transmitting unit to send unique identification number.
11. A method for safety of motorcyclists, comprising:
generating a first output signal identifying the presence of the first headgear;
generating a second output signal identifying the presence of the second headgear;
receiving either first or both first and second output signals at the receiving unit; and
processing the received signal by the control unit to generate a command signal for starting the motorcycle.
12. The method as claimed in claim 11, wherein said processing of the signals
received by the control unit comprises processing of output signals received either from
first headgear or from both of the first and the second headgear.

13. The method as claimed in claim 11, wherein identifying a unique identification number of any either the first headgear or the second headgear when replaced by any other headgear.
14. The method as claimed in claim 13, wherein responsive to identifying a unique identification number and switching a learn mode switch in the learning unit, the control unit generates a command signal for starting the motorcycle.
15. A system for ensuring safety of motorcyclists substantially as herein described with reference to the foregoing specification and the accompanying drawings.

16. A method for ensuring safety of motorcyclists substantially as herein described with reference to the foregoing specification and the accompanying drawings.