The project is designed to control a circuit breaker by using a password for the safety of electric man. Critical electrical accidents to line men are on the rise during electric line repair due to lack of communication and co-ordination between the maintenance staff and electric substation staff.

This proposed system provides a solution that ensures safety of maintenance staff, i.e., line man. The control to turn on/off the line will be maintained by the line man only because this system has an arrangement such that a password is required to operate the circuit breaker (on/off).

This system is fully controlled by ARDUINO NANO microcontroller. A matrix keypad is interfaced to the microcontroller to enter the password. The entered password is compared with the stored password in the ROM of the microcontroller.

If the password entered is correct, then only the line can be turned ON/OFF. The activation / deactivation of the circuit breaker is indicated by a lamp that turns on or off. The status will display on LCD.

 

The features of the project are: 

• Password based circuit breakers control.
• Key pad-based password access.
• Usage of relay to break the circuit.

 

The major building blocks of this project are: 

• Regulated power supply.
• ARDUINO NANO Micro-controller.
• LED.
• Relay.
• Keypad.
• 16*2 LCD display.

 

Software’s used: 

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

 

Regulated Power Supply:  

 

 

Block Diagram:

video: