Rancang Bangun Prototipe Sistem Deteksi dan Peringatan Dini Kebocoran Gas LPG pada Truk Tangki Berbasis Arduino Uno dengan Notifikasi SMS dan Lokasi GPS

Abstract

Leakage from LPG tank trucks can escalate into fire, vapour cloud explosion, or BLEVE, yet a leak may go unnoticed by the driver during a trip. This study designed and tested, at laboratory scale, a low-cost early-warning prototype for LPG tank trucks. Following a research-and-development procedure limited to prototype testing, the system combines an MQ-6 gas sensor, an Arduino Uno, a buzzer, a 16×2 LCD, a GPS module, and a SIM800L GSM module that sends an SMS containing the leak status and coordinates. Tests were run on a miniature tank truck using a butane canister. In five functional trials (two without gas, three with gas), all outputs matched the design logic. Mean detection time increased with release distance, from 1.40 s (SD 0.20) at 5 cm to 15.37 s (SD 2.80) at 25 cm (t = 0.708d − 2.64; R² = 0.951). The mean SMS delay was 7.86 s (SD 0.51), giving an estimated detection-to-notification time of about 23 s at 25 cm. GPS output was stable in a static test, but positional error was not measured. Field testing, sensor calibration, and certified explosion-protected hardware are required before vehicle use.