VEHICAL CONTROL BY ALCOHOL DETECTOR

BY:DHRUV AGARWAL(12-EEU-014)

HEEVAN SHER(12-EEU-020)

INTRODUCTION:• The purpose of this project is to develop vehicle accident prevention

by method of alcohol detector in an effort to reduce traffic accident cases based on driving under the influence alcohol.

• This project is developed by integrated the alcohol sensor with the• microcontroller.• The alcohol sensor used in this project is MQ-3 which to detect the

present of alcohol content in human breath.• An ignition system which will produce spark plugs is build up as a

prototype to act like the ignition starter over the vehicle’s engine. • The ignition system will operate based on the level of blood alcohol

content (BAC) from human breaths detected by alcohol sensor.

CHARACTERISTICS OF the project :• An embedded system is some combination of computer hardware and

software, either fixed in capability or programmable, that is specifically designed for a particular function

• The Keil C51 C Compiler for the 8051 microcontroller is the most popular 8051 C compiler in the world.

• The C51 Compiler allows you to write 8051 microcontroller applications in C that, once compiled, have the efficiency and speed of assembly language. Language extensions in the C51 Compiler give you full access to all resources of the 8051.

• We run the vehicle by using wireless communication i.e. from Control section (acts as transmitter) we are ejecting the control signals, then the vehicle receives (acts as receiver) the signals, according to the signals it will give a alarm or buzzer.

NEED FOR THE PROJECT• Compelling need for the innovation “ Alcohol Detection with

vehicular system” provides an automatic safety system for cars and other vehicles as well.

• Frequent and highly publicized enforcement can be effective in reducing drinking and driving if people perceive there is a credible threat of being caught –but it will not eliminate it.

• 800 million drink driving trips annually (NHTSA, 2003) 0.02% of all trips

• 1.5 million drivers arrested for DWI annually �• Less than 1% of drunk drivers 130,000 alcohol ignition

interlocks in use in U.S. �• Approximately 10% of those convicted of DWI

APPLICATIONS OF EMBEDDED SYSTEM :

• Military and aerospace embedded software applications.

• Communication applications.• Industrial automation and process control

software• Mastering the complexity of applications.• Reduction of product design time.• Real time processing of ever increasing

amounts of data.• Intelligent, autonomous sensors. 

EmbeddedSystems

ComputerArchitecture

SoftwareEngineering

Data Communication

ControlEngineering

Electric motorsand actuators

Sensors andmeasurements

AnalogElectronic design

DigitalElectronic design

Integrated circuitdesign

APPLICATIONS OF EMBEDDED SYSTEM

Operating Systems Build

DownloadDebugTools

BLOCK DIAGRAM

Components used:• Resistance• Capacitance• LED• Alcohol sensor• Transistor • Microcontroller 8051• LCD display• Connecting chords• DC motor• 4*3 keypad matrix• Solder• Relays• Voltage Regulator

SOFTWARE REQD: KEIL Compiler

MICROCONTROLLER(8051)• The AT89C52 is a low-power,

high-performance CMOS 8-bit microcomputer with 8K bytes of Flash programmable and erasable read only memory (PEROM).

• The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 and 80C52 instruction set and pinout.

 

RESISTANCE:• Resistance is the

opposition of a material to the current. It is measured in Ohms (W).

• All conductors represent a certain amount of resistance, since no conductor is 100% efficient.

• The most common type of resistors used in our projects is carbon type.

COLOURS CODE

Black 0Brown 1Red 2Orange 3Yellow 4Green 5Blue 6Violet 7Grey 8White 9

CAPACITANCE• It is an electronic

component whose function is to accumulate charges and then release it.

• Capacitors are of two types:

(1) Fixed type :like ceramic, polyester, electrolytic capacitors-these names refer to the material they are made of aluminium foil.

(2) Variable type :like gang condenser in radio or trimmer.

LIGHT EMITTING DIODE• When a junction diode is

forward biased, energy is released at the junction diode is forward biased due to recombination of electrons and holes.

• In silicon and germanium diodes, the energy released is in infrared region. In the junction diode made of gallium arsenate or indium phosphide, the energy is released in visible region.

LCD DISPLAY• Certain organic large

size molecule types of liquids possess properties, which cause them to interfere with light passage in them.

• One glass plate has the 7 segment electrodes etched on it and a conductive coating of tin oxide or Tin cum Indium oxide. The other plate has the common electrode.

RELAYS• A relay is an electrical

switch that opens and closes under control of another electrical circuit.

• When electricity is applied to the wire, the rod becomes magnetic. A movable contact arm above the rod is then pulled toward the rod until it closes a switch contact.

• When the electricity is removed, a small spring pulls the contract arm away from the rod until it closes a second switch contact.

BUZZER Buzzer is a audio signal device

Works on electromechanically or piezoelectric Circuit.

Buzzer act as alarm of the circuit

The vibration of metal plate causes a sound

DC MOTOR• A DC motor is any of a

class of electrical machines that converts direct current electrical power into mechanical power. The most common types rely on the forces produced by magnetic fields.

• Most types produce rotary motion; a linear motor directly produces force and motion in a straight line.

VOLTAGE REGULATOR• A voltage regulator is

designed to automatically maintain a constant voltage level.

• A voltage regulator may be a simple feed-forward design or may include negative feedback control loops. It may use an electromechanical mechanism or electronic components.

• Depending on the design, it may be used to regulate one or more AC or DC voltages.

PUSH BUTTON

• A push-button is a simple switch mechanism for controlling some aspect of a machine or a process.

• Buttons are typically made out of hard material, usually plastic or metal.

•  The surface is usually flat or shaped to accommodate the human finger or hand, so as to be easily depressed or pushed.

ALCOHOL SENSOR• The alcohol sensor circuit will detect

the alcohol depends on human breath and the signal will send data to PIC 16F876A as a controller to other circuits.

• The result of human breath contains alcohol that has detected from alcohol sensor circuit will display on the LCD 16x2 display.

• It has a high sensitivity and fast response time. Sensor provides an analog output based on alcohol concentration.

• The sensor needs 5V power supply to operate.

CONNECTION DIAGRAM

APPLICATION USED IN THE PROJECT

Applications and Advantages:• Can be used for security purpose.• Same project can be implemented in

industry or educational institutes.Future Development:• Wireless is the buzz of communication industry

today.• The field of wireless communication is growing leaps

and bounds day by day.• There have been many advancements taking place in

the semiconductor industry leading to more and more advancements in wireless technology.