Rancang Bangun Sistem Telemetri Gas Liquefied Petroleum Gas (LPG) dan Karbon Monoksida (CO) untuk Aplikasi Keselamatan di Lingkungan Tertutup

Muttaqiin, Muhammad Roisul Muttaqiin (2026) Rancang Bangun Sistem Telemetri Gas Liquefied Petroleum Gas (LPG) dan Karbon Monoksida (CO) untuk Aplikasi Keselamatan di Lingkungan Tertutup. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Keselamatan kerja di ruangan tertutup memiliki risiko tinggi terhadap paparan gas berbahaya seperti Liquefied Petroleum Gas (LPG) dan Karbon Monoksida (CO) yang dapat menyebabkan keracunan hingga ledakan. Penelitian ini bertujuan untuk merancang bangun sistem telemetri portabel guna mendeteksi gas LPG dan CO, sehingga dapat memitigasi risiko kecelakaan di lingkungan tertutup secara real-time dan jarak jauh. Sistem dikembangkan menggunakan mikrokontroler ESP32, sensor gas MQ-9 ganda, layar OLED, serta mengintegrasikan platform ThingSpeak untuk pemantauan berbasis Internet of Things (IoT). Hasil pengujian sistem menunjukkan bahwa fitur peringatan keamanan lokal berupa LED merah dan buzzer serta transmisi data telemetri dapat berfungsi dengan sangat baik, yakni aktif secara otomatis saat konsentrasi gas CO mencapai ambang batas 50 ppm dan LPG menyentuh 1000 ppm. Namun, hasil validasi pembacaan kadar gas mendapati nilai galat ukur (error) yang cukup tinggi, dengan error relatif sebesar 40,10% untuk CO dan 89% untuk LPG. Kesalahan presisi ini diakibatkan oleh terjadinya sensor poisoning dan saturasi saat sensor terpapar gas murni dengan konsentrasi sangat pekat di dalam chamber tertutup. Kesimpulannya, meskipun sistem peringatan dini dan telemetri telah berhasil beroperasi sesuai rancangan, penggunaan sensor tipe metal oxide (MQ-9) membutuhkan metode kalibrasi presisi dan pembatasan paparan konsentrasi gas agar tidak merusak elemen penginderaan pada alat.
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Occupational safety in enclosed spaces carries a high risk of exposure to hazardous gases such as Liquefied Petroleum Gas (LPG) and Carbon Monoxide (CO), which can cause poisoning and explosions. This research aims to design and develop a portable telemetry system to detect LPG and CO gases, thereby mitigating the risk of accidents in enclosed environments in real-time and remotely. The system was developed using an ESP32 microcontroller, dual MQ-9 gas sensors, an OLED display, and the ThingSpeak platform for Internet of Things (IoT)-based monitoring. The system testing results showed that the local safety warning features, consisting of a red LED and a buzzer, along with the telemetry data transmission, functioned excellently, activating automatically when the CO gas concentration reached the threshold of 50 ppm and LPG reached 1000 ppm. However, validation of the gas concentration readings revealed a high measurement error rate, with a relative error of 40,10% for CO and 89% for LPG. This precision error was caused by sensor poisoning and saturation when the sensors were exposed to pure, highly concentrated gas inside a sealed chamber. In conclusion, although the early warning and telemetry systems operated successfully as designed, the use of metal oxide-type sensors (MQ-9) requires precise calibration methods and strict exposure limits to prevent damage to the device's sensing elements.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Karbon Monoksida, Keselamatan Kerja, LPG, Sensor MQ-9, Telemetri, ThingSpeak. Carbon Monoxide, LPG, MQ-9 Sensor, Occupational Safety, Telemetry, ThingSpeak.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1573 Detectors. Sensors
Divisions:	Faculty of Vocational > Instrumentation Engineering
Depositing User:	Muhammad Roisul Muttaqiin
Date Deposited:	25 Sep 2026 05:39
Last Modified:	25 Sep 2026 05:39
URI:	http://repository.its.ac.id/id/eprint/144791

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