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Design And Construction Of An Alcohol Detector Using Breath Analyzer

Chemical Engineering | Electrical Electronics Engineering | Industrial Physics

The design and construction of an alcohol detector using a breath analyzer involve integrating sensors capable of detecting alcohol vapors with a microcontroller system to analyze the breath sample. This process typically entails utilizing a semiconductor gas sensor, such as a metal oxide sensor, which responds to alcohol molecules present in the breath by changing its resistance. The breath analyzer device must incorporate signal conditioning circuits to amplify and filter the sensor output, enabling accurate measurement of alcohol concentration. Additionally, the system should feature calibration mechanisms to ensure precise readings and compensate for environmental factors. The microcontroller interprets the sensor data, executes algorithms to calculate alcohol levels, and displays the results through a user interface, which could include an LCD screen or LED indicators. Moreover, the device may include provisions for data logging or wireless communication for further analysis or reporting. Ensuring the accuracy, reliability, and user-friendliness of the alcohol detector are paramount considerations throughout the design and construction process to facilitate its effective utilization in applications such as law enforcement, workplace safety, or personal health monitoring.

ABSTRACT

Driving under the influence of alcohol has affected and killed countless of people’s lives. If you drink and drive, not only do you possibly put yourself at risk, but your passengers and pedestrians, and other people, who were on the roads. Every thirty minutes someone’s life is cut short and families are devastated. So, here we implemented a prototype version Alcohol Detection system in order to control drunk and driving. The Alcohol Detection system works on a simple principle, If a driver has been drinking, the alcohol breath analyser sensor will detect the level of alcohol in the driver’s breath and if it crosses a set threshold, an alert will come which will alert people around and passengers

CHAPTER ONE

INTRODUCTION
BACKGROUND OF THE PROJECT
PROBLEM STATEMENT
AIM AND OBJECTIVE OF THE PROJECT
SIGNIFICANCE OF THE PROJECT
PROJECT MOTIVATION
PURPOSE OF THE PROJECT
LIMITATION OF THE PROJECT
APPLICATION OF THE PROJECT
ADVANTAGES OF THE PROJECT
PROJECT ORGANISATION

CHAPTER TWO

LITERATURE REVIEW

2.0 LITERATURE REVIEW
2.1 REVIEW OF ALCOHOL SENSING

2.2 REVIEW OF ALCOHOL USAGE

2.3 BLOOD ALCOHOL CONTENT

2.4 REVIEW OF DIFFERENT ALCOHOL TESTING METHODS

CHAPTER THREE

3.0 CONSTRUCTION METHODOLOGY

3.1 BLOCK DIAGRAM OF THE SYSTEM

3.2 EXPLANATION OF BLOCK DIAGRAM

3.3 SYSTEM COMPONENT

3.4 SYSTEM OPERATION

3.5 SYSTEM CIRCUIT DIAGRAM

3.6 SYSTEM FLOW CHART

3.7 PROGRAM CODE

3.8 POWER SUPPLY UNIT

CHAPTER FOUR

4.0 RESULT ANALYSIS

4.1 CONSTRUCTION PROCEDURE AND TESTING

4.2 ASSEMBLING OF SECTIONS

4.3 CONSRUCTION OF THE CASING

4.4 PACKAGING

4.5 MOUNTING PROCEDURE

4.6 TESTING

4.7 RESULT

CHAPTER FIVE

CONCLUSIONS
RECOMMENDATION AND FUTURE DEVELOPMENT

5.3 REFERENCES

CHAPTER ONE

INTRODUCTION

1.1 BACKGROUND OF THE STUDY

The Nigerian government has been advising its citizens not to drink and drive for decades, but for the first time, it may be able to physically stop you from getting behind the wheel while hammered.

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 countries all over the world. Alcohol Detector in Car project is designed for the safety of the people seating inside the car. Alcohol breath analyzer project should be fitted / installed inside the vehicle.

The main unit of this project is an “Alcohol sensor”. If the person inside car has consumed alcohol then it is detected by the sensor. Sensor gives this signal to a comparator IC. The output of comparator is connected to the microcontroller. Microcontroller is the heart of this project. It is the CPU of the complete circuit. Microcontroller gives high pulse to the buzzer circuit and the buzzer is turned on. At the same time a relay is turned off. Due to this the ignition of the car is deactivated.

1.2 PROBLEM STATEMENT

Nowadays major accidents occur on road because of increase in traffic and rash or asleep driving of the drivers. Several accidents occur attributable to consumption of alcohol. So alcohol dinked driving is additionally vital reason for accident happens. The alcohol detection in-car system is supposed for the cover of humans seating within the car and in several things, would like the auto and police authority isn’t hip in time. Because of this kind of accident, the help given to the sufferer is delayed.

1.3 OBJECTIVE OF THE PROJECT

The objective of this work is design a drunken driving detecting device, which detects the percentage of alcohol and displays the same on an LCD display. It also sounds an alarm if the amount of alcohol exceeds a particular amount.

1.4 PROJECT MOTIVATION

There is such a large amount of car users who drove a car with Consumption of alcohol, which is the reason for a most of car accidents. Also once Associate in an accident occurs at non-residential place or highways, in this condition most important is to offer primary aid (healing) service to injured human by the support of ambulance. So it was also necessary to include accident detection as well as location detection and this info given to the nearest police/ ambulance emergency service center help of wireless media like SMS (Short Message Service). This can help to reduce the number of accidents occur due to alcohol drunk consumption. In several car accidents there is a possibility of fire. Therefore during this dangerous situation to save individuals people life with the help of fire fighting blower to stop fire yet as data given to the nearest, police station, fire brigade and ambulance emergency service center. Proper seat belt detection is better than traditional seat belt detection. Sometimes there is a possibility of misuses safety harness lock using directly attach of extra safety harness buckle without pull of safety harness by a driver. Therefore car system detects attach the safety belt. By reducing this sort of misuse of safety harness detection within the vehicle, therefore necessary to detect correct seat belt.

1.5 PURPOSE OF THE PROJECT

The main purpose behind this project is “Drunk driving detection”. Thus Drunk driving is a major reason of accidents in almost all countries all over the world. Alcohol Detector in Car project is designed for the safety of the people seating inside the car.

1.6 APPLICATIONS OF THE PROJECT

Applications of Alcohol Detector in Car:

1) “Alcohol Detector project” can be used in the various vehicles for detecting whether the driver has consumed alcohol or not.

2) Breathing analyser project can also be used in various companies or organization to detect alcohol consumption of employees. Alcohol detection system in an automobile is a must feature which every car, machines or bus should have.

1.7 SIGNIFICANCE OF THE PROJECT

“Alcohol Detection System in Cars” provides an automatic safety system for cars and other vehicles as well.

The sensors can also aid an officer in the detection of alcohol during a stop, not to replace other more reliable and effective testing methods. This equipment helps provide law enforcement with tools to develop initial suspicion of someone breaking the law. Because they lack the precision of other tests and can detect alcohol from sources other than the suspected impaired driver

1.8 ADVANTAGES OF THE PROJECT

To prevent accident due to drunk and driving.
Easy and efficient to test the alcohol content in the body.
Quick and accurate results.
Helpful for police and provides and automatic safety systems for cars and other vehicles as well.

1.9 PROJECT ORGANISATION

The work is organized as follows: chapter one discuses the introductory part of the work, chapter two presents the literature review of the study, chapter three describes the methods applied, chapter four discusses the results of the work, chapter five summarizes the research outcomes and the recommendations.