Overview about four different types of MQ sensors typically applied to IoT devices leak detection to flammable gases as a gas liquefied petroleum that is used on Brazilian kitchens


  • Marcos Camargo Lima Filho
  • Marcial Porto Fernandez
  • Luciana Oliveira Pimentel




leak detection sensors, IoT, LPG, Open-Source device


Considering the current scenario increasingly conducive to the use of technologies like the Internet of Things (IoT), and the growing change in the expansion of the use of connected networks and aiming to meet in the problem of LPG leak safety in the household, at places that are not have regulations that require the use sensors, both in the public and private sectors, that can mitigate operational risks in the use of flammable gases such as LPG (Liquefied Petroleum Gas) which is the most used gas for cooking food or in water heating in Brazil. This study seeks to present the consolidation of results on pre-liminary tests with four types of sensors that detect hydrocarbons and determine which of them may be more promising in the use of LPG detection, which may in the future be applied to a low-cost and Open Source IoT device.


Gás Natural e Biocombustíveis (ANP) Agência Nacional do Petróleo. 1999. ANP Ordi-nance No. 47, March 24, 1999, Official Gazette March 25, 1999. Available at: https://urlis.net/m5tf2w07. Accessed on May 5, 2023.

Arduino. 2023. Arduino Store. Available at:

https://store-usa.arduino.cc/collections/arduino. Accessed on May 4, 2023.

Massimo Banzi and Michael Shiloh. 2023. Introducción a Arduino (4.ª ed.). Publishing company Anaya Multimedia.

Bruno.ps, lams, claysonceles, joaoborges, bperes, mmvieira, lfvieira, olga, and loureiro. 2023. Chapter 1: Internet of Things: From Theory to Practice. Department of Computer Science, Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil. Available at: https://homepages.dcc.ufmg.br/~mmvieira/cc/papers/internetdas-coisas.pdf

Pololu Corporation. 2023. Las Vegas, USA. Available at:

https://www.pololu.com/category/7/sensors. Accessed on December 14, 2022.

Espressif Systems. 2022. ESP8266 Technical. Online. Available at: https://www.espressif.com/sites/default/files/documentation/esp8266-technical_reference_en.pdf Accessed on December 3-17, 2022.

Espressif Systems. 2022. ESP8266EX Datasheet. Online. Available at: https://www.espressif.com/sites/default/files/documentation/0a-esp8266ex_datasheet_en.pdf Accessed on December 5-17, 2022.

Mauro Faccioni Filho. 2016. Internet of Things: Digital Book. Publishing company Uni-sulVirtual, Palhoça, SC - Brazil.

Hanwei Electronics. 2023. MQ-4 Gas Sensor - Datasheet. Available at: https://www.sparkfun.com/datasheets/Sensors/Biometric/MQ-4.pdf Accessed on April 2-30, 2023.

Hanwei Electronics. 2023. MQ-5 Gas Sensor - Datasheet. Online. https://files. seeedstudio.com/wiki/Grove-Gas_Sensor/res/MQ-5.pdf. Accessed on April 2-30, 2023.

Hanwei Electronics. 2023. MQ-6 Gas Sensor - Datasheet. Online. https://www.sparkfun.com/datasheets/Sensors/Biometric/MQ-6.pdf. Accessed on April 2-30, 2023.

Information Services Group (ISG). 2023. Access the content available at. https://isg-one.com/search?search=iot%202025&lang=en. Accessed on October 16, 2023

Mohammad Khan. 2020. Sensor-Based Gas Leakage Detector System., 28 pages. https://doi.org/10.3390/ecsa-7-08278. Accessed on October 16, 2023

Arun Manhas, Neeraj Chambyal, Manish Raina, Dr Dutta, and Er Singh. 2021. LPG Gas Leakage Detection Using IOT, 520-526 pages. https://doi.org/10.32628/ CSEIT2174121. Accessed on October 20, 2023

National Fire Protection Association (NFPA). 2018. NFPA Fact Sheet. https://www.nfpa.org/-/media/Files/Code-or-topic-fact sheets/LPGasFactSheet.ashx. Accessed on October 20, 2023

Luiz Gustavo Pacete. 2022. Forbes Tech Magazine (Online version). https://forbes.com.br/forbestech/2022/08/iot-ate-2025-mais-de-27-bilhoes-de-dispositivos-estarao. Accessed on October 20, 2023

Eduardo Tanoue da Penha and Carlise Frota. 2018. Fundamentals of Organic Chemis-try. Publishing company Editora e Distribuidora Educacional S.A., Londrina, PR - Bra-zil.

Pololu. 2023. MQ-2 Gas Sensor - Datasheet. Online. https://www.winsen-sensor.com/d/files/PDF/Semiconductor%20Gas%20Sensor/MQ-2%20(Ver1.4)%20-%20Manual.pdf. Accessed on April 2-30, 2023.

Hederson. Rotondo, Murillo. Liiber. 2019. Defesa Civil. Brazil, Paraná. http://www.defesacivil.pr.gov.br/sites/defesa-civil/arquivos_restritos/files/ documen-to/2019-05/texto_modulo_5_manual_prevencao_0.pdf. Accessed in April and October, 2023.

Petrobras S/A. 2022. Brazil. LPG handbook. Available at:

https://petrobras.com.br/data/files/90/b7/63/c6/f4e9c710e2ef93b7b8e99ea8/new_manual-de-glp_diagramado.pdf. Accessed in April and October, 2023.

Marco Schwartz. 2019. Internet of Things with ESP8266: Build amazing Internet of Things projects using the ESP8266 Wi-Fi chip. Publishing company Kindle.

Bruce Sinclair. 2018. IoT: How to leverage the Internet of Things for your business (1 ed.). Publishing company Autêntica Business, São Paulo, SP - Brazil.

Espressif Systems. 2023. Available at:

https://www.espressif.com/en/products/modules. Accessed on May 7, 2023.

Sun Liwen, Li Guangpeng. 2020. Analysis of Indoor Natural Gas Leakage Explosion. Available at: https://doi.org/10.1051/e3sconf/202021302031. Accessed on October 30, 2023




How to Cite

Lima Filho, M. C., Fernandez, M. P., & Pimentel, L. O. (2023). Overview about four different types of MQ sensors typically applied to IoT devices leak detection to flammable gases as a gas liquefied petroleum that is used on Brazilian kitchens. OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA, 21(11), 22324–22340. https://doi.org/10.55905/oelv21n11-201