Description:Complete Specification:
The following specification describes and ascertains the nature of this invention and the manner in which it is to be performed

Field of the invention

[0001] The present invention relates to a helmet to limit a speed of a vehicle

[0002] Background of the invention

[0003] The mandated law of wearing a helmet while driving is continuously flouted in India. Further there have been instances of drivers facing cardiac arrests during the driving of the vehicle. The drivers and the passengers of two wheelers endanger their lives time and again. The prior art suggests that drowsiness detection and alcohol detection helmets are known.
[0004] The prior art IN201621025788 proposes a system a system used to sense heart rate and start your vehicle (two wheeler) with the help of helmet. The said technology uses heart rate sensor, battery, Bluetooth (in speedometer and helmet). First we need to connect speedometer and 'helmet' Via Bluetooth; which is present in both. We need to start the connection by switching ON the 'Vehicle‘ (battery mode) and also by switching ON the switch present on the helmet’s at one side chin (inner side). The connectivity can be established after LED on the Bluetooth symbol present on speedometer stops blinking (i.e. continuously ON mode). After connecting, the speedometer will receive the signal by the heart rate sensor present on helmet and then person can start the vehicle (ignition). The overall cost- for installing this system is around 4000 rupees.

[0005] The present invention proposes a failsafe method to ensure helmet usage among two wheeler riders. The system proposes to limit the Engine/E-motor torque until a helmet over the rider’s head is detected. A Heartbeat sensor (detecting heart rate based on volume) will placed inside the helmet near the earlobes and the forehead. The sensor will wirelessly communicate with an HMI of the vehicle to transmit real-time data on riders Heartbeat. This data can be utilized as a parameter to limit vehicle speed/torque. The present invention provides speed control of the driver in situations where helmet is not worn by the driver. Further, the vehicle speed can be limited if an abnormality in the heart rate is detected.

[0006] Brief description of the accompanying drawings
[0007] An embodiment of the invention is described with reference to the following accompanying drawings:
[0008] Figure 1 depicts a helmet to limit a speed of a vehicle
[0009] Figure 2 depicts a flowchart for a method to limit a speed of a vehicle.

Detailed description of the drawings:

[0010] The present invention will now be described by way of example, with reference to accompanying drawings. Throughout all the figures, same or corresponding elements may generally be indicated by same reference numerals. These depicted embodiments are to be understood as illustrative of the invention and not as limiting in any way. It should also be understood that the figures are not necessarily to scale and that the embodiments are sometimes illustrated by graphic symbols, phantom lines, diagrammatic representations, and fragmentary views. In predetermined instances, details which are not necessary for an understanding of the present invention, or which render other details difficult to perceive may have been omitted.
[0011] Referring to Figure (1), the same depicts A helmet (1) to limit a speed of a vehicle (5) , said helmet (1) worn by the driver of the vehicle. The helmet (1) comprises at least one sensor (2) to detect a heart rate of the driver. Said at least one sensor (2) is in communication with a controller.
[0012] Said controller (3) is adapted to transmit a signal to an electric control unit (ECU (4) ) of the vehicle based on the heart rate of the driver, and said ECU (4) adapted to regulate the speed of the vehicle based on the signal received from the said controller.
[0013] The at least one sensor (2) detects the heart rate of the driver based on a change in a volume of blood flow at a region on a head of the driver. The controller (3) transmits a signal to the ECU (4) when the heart rate of the driver as detected by the at least one sensor (2) is within a threshold heart rate range.
[0014] The at least one sensor (2) is placed at any of a region on the forehead and a region near the earlobe of the driver.

[0015] The said at least one sensor (2) communicates with the ECU (4) through a network that facilitates transmission and reception of signals based on the wireless communication protocol including, not limitedly, wireless LAN (WLAN), digital living network alliance (DLNA), wireless broadband (Wibro), world interoperability for microwave access (Wimax), global system for mobile communication (GSM), code division multi access (CDMA), code division multi access 2000 (CDMA2000), enhanced voice-data optimized or enhanced voice-data only (EV-DO), wideband CDMA (WCDMA), high speed downlink packet access (HSPDA), high speed uplink packet access (HSUPA), IEEE802.16, long term evolution (LTE), long term evolution-advanced (LTE-A), wireless mobile broadband service (WMBS), Bluetooth, infrared data association (IrDA), ultra-wideband (UWB), ZigBee, near field communication (NFC), ultra sound communication (USC), visible light communication (VLC), Wi-Fi, and Wi-Fi direct. Examples of the cable communication protocol include, but not limited to, wired local area network (LAN), wired wide area network (WAN), power line communication (PLC), USB communication, Ethernet communication, serial communication, and optical/coaxial cable communication.

[0016] Further, in an example, the vehicle (2) may comprise smart infotainment system to communicate with the driver and the said at least one sensor. It is further stated Multiple embodiments and use cases of the present disclosure are possible and the embodiments shown and use cases described in the present invention should not be construed as limiting the scope of the present invention.

[0017] During and implementation of the present invention, the at least one sensor (2) will be placed in the Helmet (1) and power by a battery source. According to an example, the position of the at least one sensor (2) will be at the earlobe of the driver, when the driver wears the said helmet (1) . The signals received from the at least one sensors will be amplified and filtered to detect human heart rate continuously. The ECU (4) unit evaluates the received data and allows the vehicle for start or limit the speed/torque of the vehicle. The ECU (4) may be configured to evaluate the data based on a range of heart rates indicative of a functioning heart, wherein, said heart rate range may be according to the age, health and gender of the driver.

[0018] Referring to Figure 2, the same depicts a flow chart for a method to limit a speed of a vehicle. The method (100) to limit a speed of a vehicle comprises the first step (101) of of detecting a heart rate of the driver by at least one sensor, said at least one sensor (2) in communication with a controller. This step is followed by the step (102) of transmitting a signal to an electric control unit (ECU (4) ) of the vehicle, by said controller, based on the heart rate of the driver as detected by the at least one sensor. The next step (103) is regulating the speed of the vehicle, by the ECU (4) , based on the signal received from the said controller. Detecting the heart rate of the driver, by at least one sensor, is based on a change in a volume of blood flow at a region on a head of the driver. The transmission of a signal, by the at least one sensor (2) to the controller (3) is when the heart rate of the driver as detected by the at least one sensor (2) is within a threshold heart rate range.

, Claims:We Claim:
1. A helmet (1) to limit a speed of a vehicle (5) , said helmet (1) worn by the driver of the vehicle, the helmet (1) comprising:
-at least one sensor (2) to detect a heart rate of the driver, said at least one sensor (2) in communication with a controller,

characterized in that,
said controller (3) adapted to transmit a signal to an electric control unit (ECU (4) ) of the vehicle based on the heart rate of the driver, and
said ECU (4) adapted to regulate the speed of the vehicle based on the signal received from the said controller.

2. The helmet (1) as claimed in claim 1, wherein the at least one sensor (2) detects the heart rate of the driver based on a change in a volume of blood flow at a region on a head of the driver.

3. The helmet (1) as claimed in Claim 1, wherein, the controller (3) transmits a signal to the ECU (4) when the heart rate of the driver as detected by the at least one sensor (2) is within a threshold heart rate range.

4. The helmet (1) as claimed in Claim 2, wherein the at least one sensor (2) is placed at any of a region on the forehead and a region near the earlobe of the driver.

5. A method to limit a speed of a vehicle by a helmet (1) , said helmet (1) worn by the driver of the vehicle, the method comprising the steps of :

- detecting a heart rate of the driver by at least one sensor, said at least one sensor (2) in communication with a controller;

the method characterized by,
-transmitting a signal to an electric control unit (ECU (4) ) of the vehicle, by said controller, based on the heart rate of the driver as detected by the at least one sensor; and

-regulating the speed of the vehicle, by the ECU (4) , based on the signal received from the said controller.

6. The method as claimed in Claim 4, wherein, detecting the heart rate of the driver, by at least one sensor, based on a change in a volume of blood flow at a region on a head of the driver.

7. The method as claimed in Claim 4, wherein, transmitting a signal, by the at least one sensor (2) to the controller (3) when the heart rate of the driver as detected by the at least one sensor (2) is within a threshold heart rate range.