/Design-And-Implementation-Of-Alcohol-Detection-936856.h

Topics: Liquid crystal display, Electronic paper, Signal processing Pages: 6 (927 words) Published: April 18, 2014
Microtronics technologies

Mobile: 99707 90092

Website: www.projectsof8051.com

Email: info@mtronixtech.com

For more Project details visit:
http://www.projectsof8051.com/alcohol-detection-with-vehicle-controlling/

Code
1250

Project Title
Alcohol detection with vehicle controlling

Synopsis for

Alcohol detection with vehicle
controlling
Introduction

The main purpose behind this project is “Drunk driving detection”. Now a days, many accidents are happening because of the alcohol consumption of the driver or the person who is driving the vehicle. Thus Drunk driving is a major reason of accidents in almost all contries all over the world. Alcohol Detector in Car project is designed for the safety of the people seating inside the car. This project should be fitted / installed inside the vehicle.

MicroTronics Technologies
Website: www.projectsof8051.com Mobile: 99707 90092 Email: info@mtronixtech.com

Microtronics technologies

Mobile: 99707 90092

Website: www.projectsof8051.com

Email: info@mtronixtech.com

Block diagram

Display
Alcohol
Sensor &
Amplifier

Relay for Vehicle
control
ADC

Microcontroller

Max232 Serial
interface

Explanation of Block diagram
1) Alcohol sensor:-

Alcohol sensor 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.

MicroTronics Technologies
Website: www.projectsof8051.com Mobile: 99707 90092 Email: info@mtronixtech.com

Microtronics technologies

Mobile: 99707 90092

Website: www.projectsof8051.com

Email: info@mtronixtech.com

2) ANALOG TO DIGITAL CONVERTER (ADC):-

ADC is used as a signal conditioner, which is given as an input to the micro controller. Most of the information carrying signals such as voltage, current, temperature, pressure and time are available in analog form. However, for processing, transmission and storage purpose, it is often more convenient to express such signals in digital form. When expressed in digital form, they provide better accuracy and reduce noise.

The A to D conversion is a quantizing process whereby an analog signal is converted into equivalent binary word.
ADCs are classified into two general groups based on the conversion techniques. One involves comparing a given analog signal with the internally generated reference voltages. This group includes successive approximation, dual slope technique and flash A to D type converters. Another technique involves changing an analog signal into time or frequency and comparing these new parameters against known values. This group includes integrator converter and V to F converter.

3) MICRO-CONTROLLER (8051):-

It is the major part of the system. It maintains the temperature, humidity and light intensity to the desired value. The 8051 has one serial port that receives and transmits data. Transmission and reception can take place simultaneously. The four communication modes possible with 8051 present the system designer and programmer with opportunities to conduct very sophisticated data communication network. It is the heart of the system which controls all the inputs and the controlling action to be taken at the output. Microcontroller used here is the AT89S51.

MicroTronics Technologies
Website: www.projectsof8051.com Mobile: 99707 90092 Email: info@mtronixtech.com

Microtronics technologies

Mobile: 99707 90092

Website: www.projectsof8051.com

Email: info@mtronixtech.com

4) 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...
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