Auto light Controller and Visitor Counter

This Project Automatic Room Light Controller with Visitor Counter using Microcontroller is a reliable circuit that takes over the task of controlling the room lights as well as counting the number of persons/visitors in the room very accurately. When somebody enters the room, the counter is incremented by one, and the light in the room will be switched ON. When anyone leaves the room, the counter is decremented by one. The light will only be switched OFF until all the persons in the room go out. The total number of persons inside the room is also displayed on the seven-segment displays. The microcontroller does the above job. It receives the signals from the sensors, and this signal is operated under the control of software which is stored in ROM. Microcontroller AT89S52 continuously monitors the Infrared Receivers. When any object passes through...

The Automatic Room Light Controller with Visitor Counter utilizes the AT89S52 microcontroller, which is a member of the 8051 family, known for its versatility and ease of integration in various applications. The circuit features an array of infrared sensors positioned at the entry and exit points of the room. These sensors detect the presence of individuals as they pass through, sending signals to the microcontroller to increment or decrement the visitor counter accordingly.

The system architecture includes a power supply unit that provides the necessary voltage levels to the microcontroller, sensors, and display components. The microcontroller is programmed to continuously poll the infrared sensors. Upon detecting an individual entering the room, it activates the room lights and updates the visitor count displayed on the seven-segment displays. Conversely, when an individual exits, the microcontroller decrements the count. Importantly, the light remains ON until the visitor count reaches zero, ensuring that the room is adequately illuminated for the last person leaving.

For display purposes, the seven-segment displays are interfaced with the microcontroller through appropriate driver circuits, which may include transistors or dedicated display driver ICs to manage the current requirements of the segments. The software logic implemented in the microcontroller's ROM handles the counting algorithm, light control, and display updates, ensuring a seamless user experience.

In summary, the Automatic Room Light Controller with Visitor Counter is a practical and efficient solution for managing room lighting based on occupancy, leveraging the capabilities of the AT89S52 microcontroller and infrared sensing technology. This system not only enhances energy efficiency by controlling lighting based on presence but also provides real-time data on room occupancy.This Project Automatic Room Light Controller with Visitor Counter using Microcontroller is a reliable circuit that takes over the task of controlling the room lights as well us counting number of persons/ visitors in the room very accurately. When somebody enters into the room then the counter is incremented by one and the light in the room will be switched ON and when any one leaves the room then the counter is decremented by one.

The light will be only switched OFF until all the persons in the room go out. The total number of persons inside the room is also displayed on the seven segment displays. The microcontroller does the above job. It receives the signals from the sensors, and this signal is operated under the control of software which is stored in ROM. Microcontroller AT89S52 continuously monitor the Infrared Receivers, When any object pass t 🔗 External reference