Design and implementation of gas detection system

• <p> </p><p>Figure 1.8: Project Organizations Block Diagram- – – – 8<br>Figure 2.3: Ventilator Automatic Gas Detector [8] – – – 13<br>Figure
• 3.2Block Diagram Design of the System– – – 23<br>Figure 3.
• 3.1Mq-6 Gas Sensor [9] – – – – – 25<br>Figure 3.5: Transistor Buffer– – – – – – 27<br>Figure 3.7: Dc Regulator [10]– – – – – – 28<br>Figure 3.8: Buzzer [11]- – – – – – – – 30<br>Figure 3.9: Light Emitting Diode [12]- – – – – 31<br>Figure 3.10: Four Types of Diodes [13]- – – – – 32<br>Figure 3.11: Electrolytic Capacitor [14]- – – – – 33<br>Figure 3.12: Fix Resistor [15]- – – – – – 35<br>Figure 3.13: A Toggle Switch [16]- – – – – – 36<br>Figure 3.14: Four Types of Transistor [17] – – – – 36<br>Figure 4.1: systematic Circuit diagram of the project – – – 40<br>Figure 4.1:1 Circuit diagram of the project- – – – – 41<br>Figure 4.2: PVC wire [18]- – – – – – – 42<br>Figure 5.4:1 The picture of the project- – – – – 48</p><p>TABLE OF CONTENTS</p><p>Title page — – – – – – – – – – i<br>Certification – – – – – – – – – – ii<br>Approval page – – – – – – – – – – iii<br>Dedication – – – – – – – – – – – iv<br>Acknowledgement – – – – – – – – – v<br>Abstract – – – – – – – – – – – vi<br>List of figure – – – – – – – – – – vii<br>Table of contents – – – – – – – – – – viii</p><p>

Chapter ONE

INTRODUCTION

• </p><p>Introduction<br>
• 1.1Background of Study- – – – – – – – 1<br>1.2Problem Statement– – – – – – – – 3<br>
• 1.3Aim and Objectives – – – – – – – – 5<br>
• 1.4Significant of the project – – – – – – – 6<br>
• 1.5Scope of Study – – – – – – – – – 6<br>
• 1.5Justification of the Project – – – – – – – 6<br>
• 1.7limitations – – – – – – – – – 7<br>
• 1.8project report organization – – – – – – – 8</p><p>

Chapter TWO

LITERATURE REVIEW

• </p><p>Literature Review<br>
• 2.1History of Gas Detection system – – – – – – 10<br>
• 2.2History on Gas Detector Development- – – – – 11<br>
• 2.3How Gas Detectors Work- – – – – – – 12<br>
• 2.4Methods of Gas Detection- – – – – – – 13</p><p>

Chapter THREE

SYSTEM DESIGN AND IMPLEMENTATION

• </p><p>
• 3.1Design Methodology – – – – – – – – 21<br>
• 3.2System Design Method – – – – – – – 23<br>
• 3.3System Analysis – – – – – – – – 24<br>
• 3.4Circuit working – – – – – – – – 26<br>
• 3.5microcontroller unit – – – – – – – – – 26<br>
• 3.6power supply unit — – – – – – – – 27<br>
• 3.7DC regulator – – – – – – – – – – 28<br>
• 3.8Other components used in the project – – – – – – 29<br>
• 3.9LED – – – – – – – – – – – 31<br>
• 3.10Diode – – – – – – – – – – – 31<br>
• 3.11Capacitor- – – – – – – – – – 32<br>
• 3.12Resistors – – – – – – – – – – 33<br>
• 3.13Switch- – – – – – – – – – – 35<br>
• 3.4Transistor – – – – – – – – – – 36</p><p>

Chapter FOUR

SYSTEM TESTING AND EVALUATION

• </p><p>System Implementation<br>
• 4.1Construction procedures – – – – – – – 38<br>
• 4.2Interconnection of components – – – – – – 41<br>
• 4.3Software implementation – – – – – – – – 42<br>
• 4.4Program hex file- – – – – – – – – 43<br>
• 4.5Project costing – – – – – – – – – 44</p><p>

Chapter FIVE

SUMMARY, CONCLUSION AND RECOMMENDATIONS

• </p><p>System Testing and Packaging<br>
• 5.1System Test – – – – – – – – – 46<br>
• 5.2Test Plan and Test Data – – – – – – – 46<br>
• 5.3Components Test – – – – – – – – 47</p><p>
• 5.4Packaging – – – – – –</p> <br><p></p>