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Dangerous Gas Detection using an Integrated Circuit and MQ-9

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Year of Publication: 2016
Falohun A.S., Oke A.O., Abolaji B.M., Oladejo O.E.

Falohun A.S., Oke A.O., Abolaji B.M. and Oladejo O.E.. Article: Dangerous Gas Detection using an Integrated Circuit and MQ-9. International Journal of Computer Applications 135(7):30-34, February 2016. Published by Foundation of Computer Science (FCS), NY, USA. BibTeX

	author = {Falohun A.S. and Oke A.O. and Abolaji B.M. and Oladejo O.E.},
	title = {Article: Dangerous Gas Detection using an Integrated Circuit and MQ-9},
	journal = {International Journal of Computer Applications},
	year = {2016},
	volume = {135},
	number = {7},
	pages = {30-34},
	month = {February},
	note = {Published by Foundation of Computer Science (FCS), NY, USA}


Natural gas is an odourless one which consists of compounds made of two elements: carbon and hydrogen called hydrocarbons. Sometimes, due to an accident or if the valve is not properly closed, the gas leaks. This system is aimed at detecting the leakage and sounding an alert so that occupants in the building can maintain optimal ventilation and turn off all electrical appliances or evacuate the vicinity until a redress is made.

An MQ-9 chemical sensor coupled with an Integrated Circuit was used to build the system and on testing, the system gave adequate visual information, audible and timely alert on detecting a gas leakage.


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Sensor, Buzzer, Embedded, Soldering, Alarm.