A Study to measure reduced gases concentration using MQ-2 sensor

Authors

  • Ali Darwisho Tishreen University
  • Fadi Motawej Tishreen University
  • Hussam Farhat Tishreen University

Abstract

      In this paper, we carried out a study that enables us to calculate the number of gas molecules in terms of the output voltage of the MQ-2 gas sensor.

      The MQ-2 sensor can sense a number of gases in surrounding area such as: CO, LPG, Methane (CH4), Smoke, Alcohol, H2, Propane (C3H8).

      The gas sensor has a resistance whose value changes to the gas concentration and the output voltage of that sensor changes accordingly, but the direct readings given by the sensor are not very useful, and we will deduce using a number of relations the value of the gas concentration anywhere.

      We designed an electronic circuit that calculates the sensor's output voltage, resistance, and gas concentration and displays it on the LCD screen, in addition to sending an alarm in the event of a gas leak to the mobile phone via the Internet. In addition to an acoustic alarm in surrounding area using an electric buzzer, the circuit test results showed an accuracy of 92.5%, a sensitivity of 95%, and a specificity of 90%.

Author Biographies

Ali Darwisho, Tishreen University

Professor- Department of Physics- Faculty of Science

Fadi Motawej, Tishreen University

Assistant Professor - Department of Mechatronic - Faculty of Mechanical and Electrical Engineering

Hussam Farhat, Tishreen University

Postgraduate student (Master)- Department of Physics- Faculty of Science

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Published

2022-03-31

How to Cite

1.
درويشو ع, متوج ف, فرحات ح. A Study to measure reduced gases concentration using MQ-2 sensor. TUJ-BA [Internet]. 2022Mar.31 [cited 2024Nov.24];44(1):95-112. Available from: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/12089

Issue

Vol. 44 No. 1 (2022): Tishreen University Journal of Research and Scientific Studies - Basic Sciences Series

Section

Master student researches

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