Automatic Room Light Controller with Bidirectional Visitor Counter

The project is meant to observe the amount of persons coming into yet as exiting a space. Electrical Mains are switched ON because the person enters and switches OFF once the last person leaves. IR sensors employed in combination with microcontroller to observe all the operations. This helps in saving lot of Electrical Energy. There are 2 combine sensors namely IR Transmitter & TSOP1738 Receivers Placed in Outer Side of Door and Inner side of Door, Every unbroken at bound distance from the opposite One combine of Detector. The transmission half emits modulated IR light-weight that is received at the receiver finish and fed to a microcontroller of AT89S52 family. When an individual enters the space then microcontroller senses it (with the assistance of IR sensors) and increments the count and displays it on seven segment Displays and switch ON the load. In the same means once an individual exits the space, the count gets decremented. When the last person exits from the space, The Load is switch OFF. The load operation is handled by a relay interfaced to the microcontroller. Further the project are often increased by exploitation timer arrangement within the project so if the load shift doesn’t manifest itself for a few reason as desired, then timer would complete the task after prefixed time.