In any modern structure or building of the world, safety has the highest priority and therefore fire detection system is one of the basic components of the structure. Timely information of fire not only helps save lives but also makes it easier to put out fire.
The Smoke module of our project is to detect smoke from the environment which is inevitable outcome of fire. So to fulfill this requirement we have used smoke sensor MQ-2 and a Microcontroller ADC. The sensor output is almost zero when there is no smoke in environment .On the contrary when there is a smoke the sensor will give a output voltage according to the intensity of smoke
The onboard Smoke Sensor (MQ-2) provides the Smoke contents in the air. If this found above set PPM value then it will inform the Host controller by pulling the Digital Output Pin to High and onboard status LED glow. The sensor module is mainly intended to provide a means of comparing LPG sources and being able to set an alarm limit when the source becomes excessive.
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