ABSTRACT

The project represents our final project in which we seek to address the problem of loss of life and property due to drunk driving. In our project, we used an Arduino Uno3 microcontroller connected to an alcohol sensor that detects the presence of alcohol by analyzing the breath of the person driving the vehicle. The vehicle's engine will shut off and the emergency siren will sound once alcohol is detected, minimizing the chances of any accidents that may have occurred. This will prevent loss of life and property. An alcohol sensor is installed on the steering wheel of the car, with the ultimate goal that when the alcohol level exceeds a reasonable farthest point where starting the vehicle will kill and the engine will stop. The Arduino always uses the information from the alcohol sensor to check for drunk driving and uses the screw on the vehicle's engine to stop the engine.

INTRODUCTION

We hear a lot of drunken driving accidents and it's not going to be stable. So reckless driving is beneficial for another death on the road for the drunk driver and not for others. An arduino Uno compact board is used in this system. The programs are developed in embedded C. Our project is based on the prevention of driving under the influence of alcohol. So in our project we use MQ3 sensor, DC motor, Arduino board and LCD display. Here Arduino is used for programming and interface purposes; The LCD display is used to display the percentage of alcohol present in a person's alcoholic breath, the MQ3 sensor is used to detect alcohol molecules. This sensor is located on the steering wheel of the car. When the driver tries to drive the car while too drunk, the MQ3 sensor detects the presence of alcohol and when the percentage level is above the specified value, a signal is sent to the Arduino. According to this signal, the motor stops working. In this project we set the alcohol percentage to 40%

HARDWARE REQUIRED

• Power supply(Battery or adaptor )

• Arduino UNO

• Alcohol sensor MQ3

• DC motor (as a engine)

• Buzzer

• LCD display

• Relay module

SOFTWARE REQUIRED

• About the Arduino IDE

• Embedded C Programming

• Fritzing

COMPONENTS WORKING

DC motor: - Normally the DC motor is running. At that moment, the green LED is on and the alcohol% is below 40. But when the alcohol% rises above 40, the motor stops and the red LED lights up.

MQ3 sensor: - We used ethyl alcohol to demonstrate our project. In this project the MQ 3 sensor is used as an alcohol sensor. It senses % ethanol molecule. When the ethanol % rises above the specified value, then it will give a signal to the Arduino.

Arduino Board: - This is an embedded system which we have used to control the entire section. According to the signal from the MQ3 sensor, it controls the operation of the DC motor. It also controls the LCD display module.

Darlington Pair: - Here Darlington pair is used to increase the rated current to run the DC motor.

No-load diode:- We have used a no-load diode across the DC motor to reduce the inductive effect.

LCD Display:- Here we have used LCD display to display the percentage of alcohol.

Click here for CIRCUIT DIAGRAM

Click here for CODE

CONCLUSION

An effective solution is provided to develop an intelligent vehicle system that will monitor various parameters of the vehicle between a constant time period and send this data to the base unit as explained in this document using the hardware platform that is the core of the Arduino, Alcohol sensor mq3. The entire Control system has the advantage of small volume and high reliability. The future scope of this system is to check accidents and provide useful details about the accident vehicle, thereby reducing the number of accidents that occur due to drunk driving. This system brings innovation to the existing technology in the vehicles and also improves the safety features, thus proving to be an effective development in the automotive industry.