The main controlling part of the project is Arduino UNO microcontroller. Light based human motion detection is an embedded system which we are used to provide security. This is our proposed system. Instead of manual security if we use light-based detection system for detecting human motions to provide security which reduces man power and is very cheap. As we know human body radiates heat in the form of Infrared radiations. When a person moving around this circuit, IR sensor detects the change in the IR levels of surroundings and sends a signal to the microcontroller. Then microcontroller will switch ON the Bulb through relay. Here Relay works as a switch to ON/OFF the bulb. The load status will be display on LCD. To achieve this task microcontroller loaded program written in embedded C language.          

Features of proposed system are:  

• Arduino UNO-based automatic control system.
• IR sensor-based human motion detection.
• Detects infrared radiation emitted by the human body.
• Automatically switches ON the bulb when motion is detected.
• Relay provides electrical switching of the bulb.
• Automatically controls the lighting load.
• LCD displays the load ON/OFF status.
• Reduces the need for manual operation.

       

The major building blocks of this project are:  

1. Adapter power supply.
2. Arduino UNO Micro controller.
3. IR Senor.
4. Relay.
5. LCD display.

           

Software’s used:  

1. Arduino IDE Studio for Embedded C programming.
2. Express SCH for Circuit design.

             

Regulated power supply:

                     

Block Diagram:              

video: