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The development of air quality monitoring system

Azhari, A. M. M. and Wan Zaki, Wan Suhaimizan and Zinal, Nabiah and Ishak, Baba and Kornain, Z. and Abdul Jamil, Muhammad Mahadi (2011) The development of air quality monitoring system. Journal of Engineering Technology, 1. pp. 69-73. ISSN 2231-8798


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This paper presents about the development of automated monitoring device for environmental air pollutant detection. The main part of the device consists of a detector, microcontroller and timer circuit. The gas sensor TGS2600 were used to detect air contaminant level, in which the detection through the sensor measures in unit of part per million (ppm). A PIC Microcontroller 16F876A was utilized to convert the analogue signal from the sensor into digital signal which finally displays the result through the liquid crystal display (LCD). The timer circuit has been designed to help the main detector unit to operate automatically at a specific programmed interval of 30 minutes. This gives an advantage to the system where the developed device does not require manual operating from the user. In addition, a light emitting diode (LED) will be utilized to indicate the user whenever the level of air quality exceeds 100ppm. Alternatively a buzzer system was also fitted to furthermore alerting the user. In all, this air pollution device has been constructed in small size to be used as a portable unit to be employed as in-situ air quality measuring devices. It could be used in various places such as the teaching and learning laboratory, clean room facility, and also open area where monitoring of air quality are at great concern.

Item Type: Article
Uncontrolled Keywords: air pollution; air quality; gas sensor
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD881-890 Air pollution and its control
Divisions: Faculty of Electrical and Electronic Engineering > Department of Electronic Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 24 Dec 2014 08:11
Last Modified: 24 Dec 2014 08:11
URI: http://eprints.uthm.edu.my/id/eprint/6069
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