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PROJECT ON

ALCOHOL SENSING ALERT WITH ENGINE LOCKONG

GROUP MEMBERS GIRISH CHANDRA

RAJAT BISHT HIMANSHU ADHIKARI

Introduction :-• Most of these days, we hear lot of accidents due to

drunken driving. Drunken drivers will not be in stable condition and so the rash driving is the inconvenience for other road users and also question of life and death for the drunken driver and for others.

• The system uses a compact circuitry built around Flash version of AT16 microcontroller with a non-volatile memory capable of retaining the password data for over ten years. Programs are developed in embedded C.  ISP is used to dump the code into the microcontroller

Requirements :-

Microcontroller Alcohol Sensor LCD Voltage Regulator Buzzer Diodes Motor Capacitor Power Supply 5V

Block Diagram:-

Programming

Connector

Atmega16

MCU

Power Supply

L293D

Display

Buzzer

Alcohol

Sensor

Motor

Component Description

Alcohol Sensor:- It is the sensor that measures the amount of alcohol that is present in surrounding environment. There are contact and non-contact type of sensors. As the output signal of sensor is smaller in amplitude the signal power is also low therefore amplifiers are used. The weak signals are amplified using amplifiers.

LCD Display:- Liquid Crystal Display which is commonly known as LCD is an Alphanumeric Display it means that it can display Alphabets, Numbers as well as special symbols thus LCD is a user friendly Display device which can be used for displaying various messages unlike seven segment display which can display only numbers and some of the alphabets. The only disadvantage of LCD over seven segment is that seven segment is robust display and be visualized from a longer distance as compared to LCD. Here we have used 16 x 2 Alphanumeric Display which means on this display we can display two lines with maximum of 16 characters in one line

Microcontroller ATmega16 :-

• Atmega16 has got 40 pins. Two for Power (pin no.10: +5v, pin no. 11: ground), two for oscillator (pin 12, 13), one for reset (pin 9), three for providing necessary power and reference voltage to its internal ADC, and 32 (4×8) I/O pins.

• It is clear that the CPU (Central Processing Unit) is the heart of the micro controllers. It is the CPU that will Read the program from the FLASH memory and Execute it by interacting with the different peripherals

L293D :-

Circuit Diagram:-

Application:- • “Alcohol Detector project” can be used in the

various vehicles for detecting whether the driver has consumed alcohol or not.

 • This project can also be used in various

companies or organization to detect alcohol consumption of employees.

Advantages:- It provides automatic safety system in cars as well as other

vehicles Low cost

Disadvantages:-

• Little sensitivity area.• The internal EEPROM has limited capacity so the numbers of

events are also limited by it.

Future Enhancement:-

• We can implement GSM technology to inform the relatives or owners of the vehicle about the alcohol consumption

• We can implement GPS technology to find out the location of the vehicle