Page 67 - FYP Abstract BETA Mech, Mechatronics, MD_Neat

Final Year Project 2020/2021

Development of Warning Hazard Gas

Leakage Detector System

Student’s Name: Nurul Syahidah Binti Hasan
Supervisor’s Name: Fathul Hazrimy Ahmad

Supervisor’s Email: fathulhazrimy@unikl.edu.my

Abstract Recently home fires are frequent and have caused major accidents and impact on the
public and damage their belonging. This is because Liquefied Petroleum Gas (LPG) is very
flammable, explosive which can cause injury even just a few distances. A large number of fire
accidents occur when the quality of the rubber tube is low quality, or the regulator is not in
good condition. Sometimes, the gas supply from the regulator to the burner is turned on due to
a wrong regulator. Incidentally, if the kitchen knob is turned on it causes a gas leak. Liquefied
Petroleum Gas (LPG) is widely used in cars as fuel, cooking utensils and others that can cause
accidents due to gas leaks. This type of device is not always under the supervision of the
operating organization, as it operates automatically, the danger posed using such a tool raises
the possibility that during standby or periods when it is not in operation, gas leaks can occur if
resulting in large accumulation of flammable gases can produce an explosion if its detection is
not quickly observed. The purpose of this project is, to detect any gas leakage activity to the
pressurized gas system especially LPG gas to prevent the accumulation of flammable gases so
that damage or explosions can be prevented. This system should be able to provide an efficient
monitoring system to produce due to fast response time. This warning gas leak system can be
expanded to be used for domestic needs such as homes, industry, schools, colleges, and
hospitals. For this project, it is focused on home. The system can be able to detect gas leaks
and has a buzzer, to signal to warn others to get out of the dangerous place. In this project,
implementation using MQ5 sensors has been implemented due to having excellent sensitivity
combined with fast response time. This sensor can also detect other flammable gases such as
town gas and Liquefied Natural Gas (LNG).

Keywords Liquefied Petroleum Gas (LPG), MQ5 gas sensor, concentration, Parts Per Million
(ppm), gas leak

Bachelor of Engineering Technology (Hons) in Mechanical (Automotive) 65
Bachelor of Engineering Technology (Hons) in Mechatronics (Automotive)
Bachelor of Engineering Technology (Hons) in Mechanical Design