December 7, 2018


This Project “Automatic Room Light Controller with Visitor Counter using Microcontroller AT89S52 continuously monitor the Infrared Receivers, When any . AUTOMATIC ROOM LIGHT CONTROLLER WITH BIDIRECTIONAL VISITOR Microcontroller AT89S52 continuously monitor the Infrared Receivers, When any . Implementation of Automatic Room Light. Controller with Visitor Counter Design using . a) AT89S52 MICROCONTROLLER. It is a low-power.

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If there is enough sunlight in the room which means it is a daytime then the relay will not be turned on even if the person count is greater than zero. Leave a Reply Cancel reply Your email address will not be published.


Bidirectional Visitor counter section — It is bidirectional because we have used 2 sensors on a single door. The reason automatci choosing IR LED is, infrared beams are not visible to human eyes and they are not easily triggered by other sources in the environment.

So if two or more person enters in room without any gap between them then it will treat as a single pulse.

Also we can provide a time lag between switching off devices. Below is the diagrammatic representation on how the two sensors should be placed on the door frame Snehal Shinde Question and answers about this project: This automatic counted light controller project with visitor counter is a reliable circuit based on the AT89S52 microcontroller.


We have used to 2 pairs of Transmitter and receiver. Yes, IR sensors detect the direction. If there is no gap between two persons, then Microcontroller will sense that only 1 person has entered into room. But it is less compare the the power consumption of Lights and Fans.

Do not keep any unnecessary moving things in front of IR sensors. If you use LDR as a sensor then it can be easily triggered by sunlight or any other sources of light.

Extra shipping charges are applicable for delivery out of India. Buzzer will be turned on when maximum limit of person count has reached. Initially second sensor will be activated and later first sensor will be activated. This is one of the best sensor based projects for final year.

It just responds to the IR rays falling on it. LDR will detect the sunlight. Suppose two people walk into the room in matching steps interval will it sense one intrusion? Yes, this is possible. In this project we have set the limit to 15 for demo purpose. Swap any object like mobile or your fingers not single finger in front of those sensors. Please refer to description and image given in the project details section above.


Please check your circuit connections and code twice.

Applications of the project: The various functions of Microcontroller are like:. Once the dontroller is non-zero, the room light is turned on using relay.

Automatic Room light Controller with Visitor Counter (AT89S52)

Doubt concerning the placement of IR sensor in the door frame. And then we can turn on the project in evening time. The microcontroller does the function of Reading the digital input from two infrared receivers and calculates the number of persons from them.

Do you have visitoor question or any feedback about this project?

Automatic Room light Controller & Person Counter

The various functions of Microcontroller are like: We can either use AC fan or DC fan as well. What is the rkom of buzzer in this project… Answer: It should be connected to second terminal of variable resistor RV.

And following are the important modules in this project: