Adaptive Headlight Control with lamp deflection (AHCLD) system for vehicleshas been proposed by many inventors and is catching increasing interest. The aim of such invention is to increase the visibility of the driver, thereby achieving a significant increase in road safety. AHCLD system is aimed at controlling the intensity of the headlights of any two vehicles moving on the road in opposite direction during night, while reducing the glare observed by both the drivers of the two vehicles. The conventional static headlamp in the vehicles provides illumination in the tangent direction of the headlamp which results in insufficient illumination of the road. It is necessary to develop new technology for the headlights that adapts with the changing curvature of roads and traffic conditions.Adaptive Headlight Control with lamp deflection (AHCLD) systemis an innovative technology and is being studied by inventors across the globe. When driving on the curved road, AHCLDwill change the lighting pattern to compensate for the curvature of the road to help enhance night visibility for the drivers. AHCLD, therefore, improves driver's visibility during night driving by reducing the intensity of the high beam of both the vehicles involved. AHCLDalso automatically turns the headlamp in the direction of travel according to the curvature of the road.
4.2 PRIOR ART
i The US 7914187 patent deals with the adjustment of the principal axis of an illumination source in response to the detection of an object of interest. The present invention is different from the above-mentioned system in a way that it performs multiple functions of reducing the light intensity and changing the direction of headlights in the intended direction.
ii The US 8017898 patent is aimed at changing the headlamp direction in response to the image data received by photo sensors. This system has an additional ability to track the new light source and adjust the headlight beam to avoid glare. The patent does not change the effect of glare of the vehicle coming from opposite direction. However, the present invention uses an RF communication module to reduce the glare of the vehicle coming in the opposite direction as well by changing the light intensity of its headlights.
iii The US 3500119 patent deals with an automatic headlight switching circuit for an automobile electrical system which is responsive to the operation to the wiper motor. The ignition switch and headlight dimmer switch for controlling the energization of the low beam headlights. It includes a switching relay. The present invention is different from the above-mentioned system in a way that the headlight control is accomplished with the use of high power and inexpensive relays.
iv The US 8162518 patent claims to reduce the high beam intensity to a low beam intensity based on the data received by the image sensor. The present invention *JZS xrejduces -the fehtinteffi^jpf hi^li'gKKM both the vehicles involved and not just one.

v The US 7540638 patent deals with a stationary adaptive front light module which differs from the rotating front lighting system as in the present invention.
4.3 Field of Invention
The present invention relates to an anti-glare system for automobiles and the method which automatically controls the high and low beam states of headlights of both the vehicles coming in opposite direction during night. The system developed is unique in the sense that it not only changes the headlight intensity of the subject car but also changes the headlight intensity of the vehicle coming in the opposite direction. The present invention also makes the headlights move with the motion of steering wheel as the driver turns around curved roads. Hence, the headlights will also rotate with the steering wheel on curved roads. The above-mentioned tasks will increase the visibility of the driver at night and minimize the chances of accidents.
4.4 Summary of Invention
Adaptive Headlight Control with lamp deflection (AHCLD) systemwill be used to decrease the light intensity of the headlight of the vehicles coming in opposite directions during night. The invention uses a particular electronic circuit,presented herein below, to control the intensity of headlights of the vehicles as well as the rotation of the headlights at curvature of roads. The process of headlight control is initiated by one of the vehicles which sends a control signal to the other vehicle and subsequently reduces the intensity of headlights of both the vehicles. The present invention also provides steering control of headlights and turns the headlights in accordance with the steering wheel.
The operation of the device will consist of the following scenarios which include that all the headlights will be at high beam when the system is turned ON. Then the system will switch to low beam when glare is sensed by the light sensitive device used in two vehicles moving in opposite direction. The system will consequently switch back to high beam when no glare is detected by the light sensors. This is done in a mutually acceptable manner and thus the system should be implemented in both the vehicles coming in opposite direction. A working prototype of the invention has been developed for a pair of vehicles. If this prototype is accepted and incorporated by the automobile industry, then the invention will be useful to increase road safety many fold. If it is universally accepted then the operation of headlight control will take place as per some predefined rules that ensure proper visibility to all the drivers in a particular scenario.

4.5 BRIEF DSCRIPTION OF DRAWINGS
FIG. 1 shows a schematic diagram of vehicle module of the present invention. The task of headlight control is performed by RF Receiver(435.72 MHz) with operating voltage range of 3V to 12V, HT12D Decoder, ARDUINO-NANO having microcontroller ATmega328p and white LED HEADLIGHTS (or equivalents).
[1] RF RECEIVER 435.72 MHz: The transmitted ASK signal is received by the 435.72 MHz receiver. The receiver demodulates the received signal and generates the bit pattern which is then given to the decoder.
[2] HT12D: The device decodes the bit pattern received from the receiver the output is then given to ARDUINO-NANO for further processing.
[3] ARDUINO NANO: It receives the signal from HT12D and accordingly controls the intensity of the headlights so as to reduce the glare. The vehicle module has been designed as a working prototype with the wheels controlled by motors. The ARDUINO NANO also controls the rotation of the DC motor.
[4] HEADLIGHTS OF VEHICLE MODULE: Our device controls the intensity of headlights of both the stations by a process initiated at the main station. Once the headlights intensity of the main station is changed, simultaneously the intensity of headlights of a vehicle module is also changed.
[5] MOTOR DRIVER IC L293D: This device is used to provide the required current for motor functioning. This component along with Bluetooth and motors are not used for headlight/ steering control and are only used to drive the motors for making a working prototype.
[6] BLUETOOTH: The device is connected to a mobile application MULTIDUINO via a Bluetooth. The mobile application is used to provide direction control of the motor via Bluetooth.
[7] VOLTAGE REGULATOR: This device is used to provide a voltage regulated power supply of 5v to all the components present in the vehicle module,
[8] MOTORS: These are used for controlled movement of the vehicle module, -

FIG. 2 shows a schematic diagram of main station in accordance with an exemplary embodiment of the present invention.
[1] HEADLIGHTS OF MAINSTATION: We have used white LEDs as headlights. Their varying intensity will be used to demonstrate the working of our device. The headlights are connected at pins 4 and 7 of Arduino Mega.
[2] LDRs: As LDR is a light sensitive device, its resistance changes with the changing light intensity. The LDR output is given to the Arduino Mega at Analog pin number AO and Al.
[3] SERVOMOTORS: LEDs are mounted on the servomotors. These servo motors are used to rotate the headlights in accordance with the steering wheel. The Arduino Mega provides output to the servo motors via digital pins 8 and 9.
[4] ARDUINO MEGA: It is a programmed device used to reduce the glare when light falls on LDR. Moreover, it controls the direction of the headlights according to the steering wheel.
[5] HT12E: It's a device which takes input from ARDUINO at pin 6 and generates a 12-bit frame, which is then given to the transmitter.
[6] TRANSMITTER 433 MHz: The transmitter performs the ASK modulation of the input bits using 433 MHz carrier signal. It receives input from pin 17 of HT12E. This ASK signal is transmitted wirelessly.
[7] VOLTAGE REGULATOR 7805: This device is used to provide a voltage regulated power supply of 5 V to all the components present in the main station.
[8] POTENTIOMETER: A 10k potentiometer acts as a steering wheel and is given to analog pin A2. As the resistance of potentiometer varies, the direction of headlights changes accordingly.

4.6 DETAIL DESCRIPTION OF THE INVENTION
With reference to the drawings Fig. 1 and Fig. 2, the prototype of the present invention comprises of two modules namely VEHICLE MODULE and MAIN STATION. As depicted in Fig 2 the main station has two light sensitive devices called LDRs placed at the front end indicated at [2], When light falls on LDR, its resistance changes and a signal is transferred from LDR to ARDUINO MEGA indicated at [4]. The signals are given through the analog pins AO and Al of ARDUINO MEGA which contains microcontroller ATmega 2560. This analog data is processed by the ARDUINO MEGA and a 4-bit code is generated. This code is transferred to the HT12E encoder, indicated at [5] via pins 10, 11, 12 and 13 of the encoder IC. In the present invention we have connected pins 11,12 and 13 to 0V and only pin 10 of HT12E encoder is used to receive output from ARDUINO MEGA via pin number 6. The headlights indicated as [1] in Fig. 2 also receive input from ARDUINO-MEGA through PWM pins 4 and 7 for reducing light intensity. The input given to the encoder by ARDUINO-MEGA is processed and given to the transmitter indicated at [6], which sends it wirelessly as an ASK signal to the RP 435.72MHz receiver, indicated at [1] of Fig. 1. The RF receiver demodulates the ASK signal and gives it to the HT12D decoder indicated at [2], in Fig. 1. So whenever light falls on the LDR, the code present at the input of the encoder will also be present at the output of the HT12D decoder in Fig. 1. These 4 bits are given to the ARDUINO NANO, indicated at [3]. The ARDUINO-NANO provides output to the headlights of vehicle module via pin number 9 and 5. Both ARDUINO NANO and ARDUINO MEGA are programmed in such a way that when a high beam of light intensity falls on LDR, the headlight intensity of both the stations is reduced.
As depicted in Fig. 2, the rotation of SG90 servo motors, indicated at [3] is controlled by the 10k potentiometer which acts as a steering wheel. When the 10k potentiometer indicated at [8] is rotated, its resistance changes and a corresponding signal is given to ARDUINO-MEGA via pin A2, as shown in the Fig. 2. The ARDUINO MEGA maps the resistance variations to some value of angular displacement. This signal is given to the servo motors via pin number 8 and 9 of ARDUINO MEGA and they rotate accordingly. Since the headlights, indicated at [1] of Fig. 2, are mounted on the servo motors, they also rotate in the same direction.
Fig. 1 depicts the vehicle module in which we use the motor driver IC, indicated at [5] which is named as L293D. Pin 1 and Pin 16 of the motor driver IC are called the enable pins which control the terminals on each side. These terminals include Pin 2, 7, 15 and 10 which act as input pins of the IC. The input to the L293D IC is provided by the ARDUINO NANO. The vehicle module is connected to the mobile application MULTIDUINO. The mobile application sends the direction control signals to the ARDUINO NANO via Bluetooth pin number 2 and 3, indicated at [6] of Fig. 1.
As depicted in Fig 1, the ARDUINO NANO processes the commands and generates a signal for the motor driver IC. The motors, indicated at [8] are connected to the motor driver IC at
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