Engine Speed Controlling Mechanism with Alcohol Detector

Abstract

The main purpose of this project titled “ENGINESPEEDCONTROLLINGMECHANISM WITH ALCOHOL DETECTOR” is to provide a safety feature for vehiclesusingArduino. In those days many accidents are happeneddue to the alcoholconsumption,Drunken and driving is one of the causes the vehicle to be damaged and thiscanbe prevented easily.Sotominimizethisissuewehaveproposedthisproject.Arduinoisthe cpu of this project. In this project, potentiometer acts as accelerator which is used tocontrol the speed of the DC motor (model for car engine) which is driven by the Relaymodule. An IR Sensor is used to detect the presence of an object in front of it and used tofind the rpm of the DC motor connected with blade fan. The IR sensor detects everyrotation of the rotors. With the help of Arduino Interrupts the IR sensor values whereobtained and processed, then the speed of the motor was displayed in the LCD module.

Now the Alcohol Sensor is used to detect whether the person consumes alcohol or not. Ifthe MQ3 Sensor senses the smell of alochol, speed of the car gets slow down(below 30 rpmvalue) or not being able to go beyond 30 rpm value and warning indication was producedusing buzzer and led, then the new warning message with the reduced speed is displayed onthe LCD.