ENERGY SAVER FOR AUTOMATIC ROOM LIGHT CONTROLLER WITH VISITOR COUNTER
In this competitive world and busy schedule human cannot spare time to perform his daily activities manually. The most common thing that he forgets to do is switching OFF the lights wherever they are not required. This project is a standalone automatic room light with visitor counter. The main aim of the project is to control the lights in a room depending upon lighting that is present in the room and count the number of persons entering into the room. Use of embedded technology makes this closed loop feedback control system efficient and reliable.
The system comprises of an IR Transmitter-Receiver pair which is located in front of the door outside the room. LDR is placed outside the room and is used to identify whether it is day or night time. Initially the light is switched off in the room. Whenever a person tries to enter into the room, the receiver of IR pair identifies the person. The microcontroller identifies this change and starts counting the people entering into the room.
The light is switched off even if anyone is present inside the room during the day time. Similarly, the light is switched off if no one is there inside the room or if it is night times. Thus, depending on the intensity of light and the surrounding temperature, the required action is performed by the microcontroller. LCD displays the number of persons entering into the room.
SOFTWARE AND HARDWARE TOOLS:
- Keil compiler
- Microcontroller AT89S52.
- IR receiver and transmitter
- TRIAC and TRIAC driver