DOMESTIC GA$ MONITORING DEVICE

The goal of this project is to monitor the content of Liquified Petroleum
Gas (LPG) in a cooking gas cylinder I LPG cylinder and alert user to replace the
LPG cylinder when it is almost finish. This is to ensure that user would not be
stuck in between cooking I heating I drying I grilling when the gas runs out. Based
on Hooke's Law, the project will use compression spring to measure the weight of
the LPG. The decreasing content of LPG in the LPG cylinder will affect the
movements of the compression spring. A sensor which is a potentiometer is used
to detect the decreased in weight of the LPG content. As the weight decreases, the
potentiometer will rotate according to the spring movements. The signal from the
sensor will be sent to the programming circuit via wireless Radio Frequency (RF)
transmission and displayed the result on Portable display consists of Liquid Crystal
Display (LCD), Light Emitting Diode (LED) and Buzzer. The buzzer will be used
to alert the user once the LPG reached the minimum level.