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All Journal Jurnal Media Elektro : Journal of Electrical Power, Informatics, Telecommunication, Electronics, Computer and Control System
Indrasari, Nindayu
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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ANALISIS PERFORMA PROTOKOL MQTT PADA SISTEM MONITORING GAS BERBAHAYA MENGGUNAKAN SENSOR MQ135 TERINTEGRASI ANDROID Genarsih, Tunjung; Indrasari, Nindayu; Rohman, Ardianto Syaifur; Dwianto, Sihmaulana; Dwinanda, Angga; Putri, Salsabila Liandra; Qanitah, Qanitah
Jurnal Media Elektro Vol 15 No 1 (2026): April 2026
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jme.v0i0.28118

Abstract

This study analyzes the performance of the Message Queuing Telemetry Transport (MQTT) protocol in a hazardous gas monitoring system using an MQ135 sensor and an ESP8266 NodeMCU microcontroller, integrated with a Flutter-based Android application. The monitored gases include CO, NO₂, CO₂, and SO₂, based on the threshold limits set by Permenaker No. 5 of 2018. The objective of this study is to evaluate MQTT Quality of Service (QoS) parameters, including delay, jitter, packet loss, and throughput, across three QoS levels (0, 1, and 2). Sensor validation was conducted using the Repeatability Test and Threshold Detection Test. The results show that the sensor demonstrates good reliability with CV values ranging from 1.92% to 3.78% and an average detection success rate of 98.9%. MQTT testing indicates that QoS 0 achieves the lowest delay (42.3 ms), jitter (3.12 ms), and zero packet loss, and the highest throughput (18.6 kbps). Additionally, the system provides real-time notification with an average response time below 500 ms. However, QoS 1 is identified as the optimal configuration, balancing delivery reliability and network efficiency for real-time laboratory safety monitoring systems
Co-Authors Dwianto, Sihmaulana Dwinanda, Angga Putri, Salsabila Liandra Qanitah, Qanitah Rohman, Ardianto Syaifur Tunjung Genarsih, Tunjung