wireless monitoring system of gas detector - Faculty of Electrical ...
wireless monitoring system of gas detector - Faculty of Electrical ...
wireless monitoring system of gas detector - Faculty of Electrical ...
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3.2 Hardware implementation<br />
In the <strong>wireless</strong> <strong>monitoring</strong> <strong>system</strong> <strong>of</strong> <strong>gas</strong> <strong>detector</strong>, there are a few parts <strong>of</strong><br />
hardware involved. This section will discuss on the design and function <strong>of</strong> each<br />
component that are connected to the Arduino in order to build the project. Along with<br />
that this section also explains how the circuitry connection between the components and<br />
microcontroller is made. This includes the sensor circuit and also the output circuit<br />
which comprises <strong>of</strong> LEDs, exhaust fan and a buzzer.<br />
3.2.1 Gas sensor circuit<br />
Figure 3.5: MQ3 and MQ6 image [12]<br />
In this project, MQ 6 is used to detect the liquefied Petroleum Gas (LPG),<br />
meanwhile MQ3 is used as the replacement <strong>of</strong> MQ 6 in detecting alcohol <strong>gas</strong>. The<br />
replacement <strong>of</strong> <strong>gas</strong> sensor in the project to show that level <strong>of</strong> different dangerous <strong>gas</strong> can<br />
be obtain by using the same method. Figure 3.5 shows the image <strong>of</strong> both the <strong>gas</strong> sensor.
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