The main scope of this project is to ensure the consumption of the power supply from mains, generator, and solar sources, optimally by using an appropriate programmed microcontroller in the most effective way. Emergency power systems are the types of systems that may include lighting, generators, fuel cells and other apparatus, to provide backup power resources in crisis or when the regular systems fail. In this setup, we use four switches to create the corresponding breakdown of that power supply source. When any of the switches is pressed, it shows the absence of that particular source. Switches are connected to the microcontroller as input signals. The commands of the microcontroller are fed to the relay driver IC, which switches appropriate relay to maintain uninterrupted supply to the load. It is indicated by using a lamp which fed through a single power supply from the mains initially. On the failure of this mains supply which has been actuated by pressing the appropriate switch, the load gets supply from the next available source – for instance, an inverter. If the inverter also fails, it switches over to the next available source, and likewise.    

The major building blocks of this project are:

 

• PIC Microcontroller
• Reset button
• Regulated power supply
• Relays with driver
• Generator.
• Mains
• LCD display.
• Solar.
• Selection switches

  Software’s used:    

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

   

Regulated Power Supply:

Block diagram:

 

video: