Smart Gas Cylinder Level and Leakage Monitoring System with Cloud Integration

The main cooking fuel used in India is LPG cylinders, and a refill is booked in advance by scheduling a fresh cylinder from an LPG vendor, which arrives in the customer's premises between two to three days. Users find it inconvenient at times when the cylinder runs empty without any prior notice. This poses a critical danger of gas leakage that could lead to hazardous fires and cause heavy damage to people and property. This study proposes an IoT-based Gas Cylinder Level Monitoring System that continues to monitor the level of LPG and detect leakage. This system employs Arduino UNO, NodeMCU, a HX711 load cell amplifier for the measurement of the gas level, gas sensor for leakage detection, buzzer for alarm, and LCD for real-time display. The measured data regarding the level of gas is sent to the ThingSpeak platform in order to remotely monitor it, and also it displays the data on its LCD. If a gas leak is detected, the system automatically sounds an alarm and shuts off the gas regulator to ensure safety.