Development Of A Low Cost Electronic Nose

Nur Shahadah, Ragimi (2015) Development Of A Low Cost Electronic Nose. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Electronic Nose (E-Nose) utilizes as an array of chemical sensors of different specificities which responds to the volatile organic compounds (VOCs) present in the gases. The demand of electronic nose has been in the market for improving the food quality control, environment monitoring, oil and gas industry, beverages and cosmetic products. However, the constraint of the electronic nose is that the choice of sensors is quite large. Besides that, the electronic nose is expensive, not portable and their performance is relatively slow. Therefore, a low-cost and portable electronic nose is expected to be developed. In this project, electronic nose is designed by using different types of gas sensors such as alcohol sensor (MQ-3) and natural gas sensor (MQ-4). The electronic nose is implemented by utilizing Arduino programming and it will read the sensitivity smell of the tester in ppm (parts per million). Once the smell is detected by the electronic nose and the reading is above the set point value (i.e., 500 ppm), the reading and the sign “DANGER” will be displayed on the LCD display. At the same time, the LED and the buzzer will be activated. On the other hand, if the sensor reading is below the set point, the sign “SAFE” will be displayed on the LCD display, LED and buzzer will be inactive.

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