Now a day's every system is automated in order to face new challenges. In present day, Automated systems have less manual operations, flexibility, reliability and accurate. Due to this demand every field prefers automated control systems. Especially in the field of electronics automated systems are giving good performance.   The project aims in designing a home system which is capable of detecting the LPG gas leakage and automatically controls the GAS regulator and gives the alerts through Buzzer and also switches on the exhaust fan automatically.   In this project gas sensor is interfaced to the microcontroller. Gas sensor constantly measures the LPG gas. When the Gas sensor detects the gas are converted to digital using ADC and fed to the microcontroller. Then the microcontroller switch off the regulator valve through servomotor and active the buzzer and also switch on the exhaust fan. By this way we can take the prevention steps before occurrence of the major fire accidents and we can avoid the human losses and financial losses.

     

The main features of the project are:

• Provide the home security system.
• Automatic controlling of GAS Regulator.
• Automatic air filtration using exhaust fan.
• Audible alerts using buzzer.

The major building blocks of this project are:

• Regulated Power Supply.
• Gas Sensor.
• Arduino UNO Micro controller.
• Relay
• Exhaust fan.
• Buzzer.
• Servomoter.
• Gas regulator.

Software’s used in the project:

1. Arduino IDE.
2. Express SCH for Circuit Design.

 

 

Regulated Power Supply:      

Block diagram:    

 

video: