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

Downloads

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 2025Apr.5];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

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal -Basic Sciences Series  

 Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal -Basic Sciences Series .  The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal -Basic Sciences Series   Publisher

 

journal uses a CC BY-NC-SA license which mean

You are free to:

  • Adapt — remix, transform, and build upon the material
  •  
  • The licensor cannot revoke these freedoms as long as you follow the license terms.

 

  • Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • NonCommercial — You may not use the material for commercial purposes.
  • ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
  • No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.