PIC-Based Carbon Monoxide Monitoring System

Nurul Dianna Soffia, Imran (2012) PIC-Based Carbon Monoxide Monitoring System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Carbon monoxide gas is a product of combustion of organic matter with insufficient oxygen supply to enable complete oxidation to carbon dioxide. It is often produced in domestic or industrial settings by motor vehicles and other gasoline powered tools, heaters, and cooking equipment. Exposures at 100 ppm can be dangerous to human health and it can be fatal if one is exposed up to 400 ppm. The fact that carbon monoxide cannot be detected by human senses makes it more dangerous. This project was created to solve this problem by detecting carbon monoxide using TGS 2442 gas sensor and generate an alarm signal when the detected gas reach its hazardous level. Powered by Microchip’s PIC18F2550, this project enable users not only be alarmed when the carbon monoxide gas reach a dangerous level but also to be aware of the gas concentration level which will be displayed on the system’s LCD. Built using a latest carbon monoxide sensor TGS 2442, the system can detect up to 1000 ppm of carbon monoxide level. The alarm signal system consists of LEDs, LCD and buzzer which will triggered according to the gas concentration level detected by the sensor. Through this project, a user-friendly yet reliable alarm system is achieved by using a cheaper yet powerful PIC18F2550 microcontroller. Testing the complete project is done at three different conditions, which is in normal air condition, cigarette smoke and car exhausts fumes.

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