Design And Implementation Of Gas Detection System

Project and Seminar Material for Computer Engineering

Design And Implementation Of Gas Detection System


Gas is supplied in pressurized steel cylinders. As this gas is heavier than air, when it leaks from the cylinder it flows along floor and tends to settle in low spots such as a basement to cause fire or suffocation if not dealt with. To handle gas leak situations, this project presents the design and construction of a Gas detection system. A gas detection system is an electronic device that detects leakage of liquefied petroleum gas and alerts the user through acoustic indication. The system consists of microcontroller, drivers, regulated power supply, alarm circuit and an MQ-6 gas sensor.

The MQ-6 gas sensor has a high sensitivity to propane, butane, isobutene, natural gas and can also be used to detect combustible gases, especially methane. The project is designed to detect LPG from concentration of 200 PPM (parts per million) to 10,000 PPM in an area, then the out pin of the sensor goes low to drive a microcontroller which is programmed to produce a high frequency alarm. A buzzer is used to produce the high frequency audible alert signal while a 9v battery powers the system. This project can be used to detect gas leakages at home, in a car, storage tank environment or in a service station. It can be easily implemented to industrial level by upgrading its ranges. The implementation of the project is so important in every home, office and industries because there are many gases that can be harmful to organic life, such as humans or animals.

List Of Figures

  • Figure 1.8; Project Organizations Block Diagram- – – – 8
  • Figure 2.3; Ventilator Automatic Gas Detector [8] – – – 13
  • Figure 3.2; Block Diagram Design of the System– – – 23
  • Figure 3.3; Mq-6 Gas Sensor [9] – – – – – 25
  • Figure 3.5; Transistor Buffer– – – – – – 27
  • Figure 3.7; Dc Regulator [10]– – – – – – 28
  • Figure 3.8; Buzzer [11]- – – – – – – – 30
  • Figure 3.9; Light Emitting Diode [12]- – – – – 31
  • Figure 3.10; Four Types of Diodes [13]- – – – – 32
  • Figure 3.11; Electrolytic Capacitor [14]- – – – – 33
  • Figure 3.12; Fix Resistor [15]- – – – – – 35
  • Figure 3.13; A Toggle Switch [16]- – – – – – 36
  • Figure 3.14; Four Types of Transistor [17] – – – – 36
  • Figure 4.1; systematic Circuit diagram of the project – – – 40
  • Figure 4.1:1; Circuit diagram of the project- – – – – 41
  • Figure 4.2; PVC wire [18]- – – – – – – 42
  • Figure 5.4:1; The picture of the project- – – – – 48

Table Of Contents

  • Title page¬† i
  • Certification¬† ¬†ii
  • Approval page¬† ¬†iii
  • Dedication¬† iv
  • Acknowledgement¬† v
  • Abstract¬† vi
  • List of figure¬† vii
  • Table of contents¬† ¬†viii

Chapter One

  • Introduction
  • 1.1 Background of Study 1
  • 1.2 Problem Statement¬† 3
  • 1.3 Aim and Objectives¬† 5
  • 1.4 Significant of the project¬† 6
  • 1.5 Scope of Study¬† 6
  • 1.5 Justification of the Project¬† 6
  • 1.7 limitations¬† ¬†7
  • 1.8 project report organization 8

Chapter Two

  • Literature Review
  • 2.1 History of Gas Detection system¬† 10
  • 2.2 History on Gas Detector Development 11
  • 2.3 How Gas Detectors Work¬† 12
  • 2.4 Methods of Gas Detection 13

Chapter Three

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

Chapter Four

  • System Implementation
  • 4.1 Construction procedures¬† 38
  • 4.2 Interconnection of components 41
  • 4.3 Software implementation¬† ¬†42
  • 4.4 Program hex file¬† 43
  • 4.5 Project costing¬† ¬†44

Chapter Five

  • System Testing and Packaging
  • 5.1 System Test¬† 46
  • 5.2 Test Plan and Test Data¬† 46
  • 5.3 Components Test¬† 47
  • 5.4 Packaging

Design And Implementation Of Gas Detection System

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Design And Implementation Of Gas Detection System


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