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FR-AI / ANALYSISWhy it is worth attention
It addresses a critical safety need—LPG leakage—with a low-cost, open-source design that combines both leak detection and weight monitoring, making it practical for everyday use in homes and commercial kitchens.
Who it is for
- Hobbyists and DIY enthusiasts building safety systems
- Students learning embedded systems and sensor integration
- Small business owners (hotels, restaurants) needing basic LPG monitoring
- Makers interested in Arduino-based gas detection projects
Use cases
- Monitoring LPG cylinder weight to know remaining gas levels
- Alerting users to gas leaks with buzzer and LCD warnings
- Automating safety actions (e.g., switching off appliances) via relay
- Educational demonstration of gas sensor and load cell interfacing
Strengths
- Integrates two safety functions (leak detection and weight monitoring) in one system
- Uses widely available Arduino and sensor components, easy to replicate
- Provides multiple alert outputs: LCD, buzzer, and LED for immediate awareness
- Includes a relay for automated safety control (e.g., cutting power or gas supply)
Considerations
- No internet or wireless connectivity; monitoring is local only
- Weight data is displayed only via Serial Monitor, not on the LCD
- Relay control is mentioned but not described for automatic valve shut‑off; system is a basic prototype
README quick start
Smart-Gas-Guard
Arduino-based LPG Leak and Weight Monitoring System using MQ2 Gas Sensor and HX711 Load Cell.
An Arduino-based smart safety system designed to detect LPG gas leakage and continuously monitor the weight of an LPG cylinder.
Features
- LPG gas leak detection using MQ2 sensor
- Cylinder weight monitoring using HX711 load cell
- LCD display for real-time status
- Buzzer alarm during gas leakage
- LED status indication
- Relay control for safety operation
Hardware Components
- Arduino Uno
- MQ2 Gas Sensor
- HX711 Load Cell Amplifier
- Load Cell
- 16x2 I2C LCD
- Relay Module
- Buzzer
- LEDs
- Connecting Wires
- Power Supply
Software
- Arduino IDE
- Embedded C++
Project Structure
Smart-Gas-Guard/
│
├── Gas_Leak_Detection.ino
├── Weight_Monitoring.ino
├── README.md
└── LICENSE
Working
The MQ2 sensor continuously monitors LPG gas concentration. If the gas concentration exceeds the threshold, the system activates the buzzer, turns on the red LED, displays an alert on the LCD, and energizes the relay.
The HX711 module measures the cylinder weight using a load cell and displays the weight through the Serial Monitor.
Applications
- Homes
- Hotels
- Restaurants
- Industrial Kitchens
- LPG Storage Areas
Authors
- Sinduja B
- Team: Deadline Dominators
Description
Arduino-based LPG Leak and Weight Monitoring System using MQ2 Gas Sensor and HX711 Load Cell.
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